Merge branch 'release/congo' into devel

internal/frontend/autoconfig/applemail.go

@@ -43,7 +43,7 @@ func (c *appleMail) Name() string {
 	return "Apple Mail"
 }
 
-func (c *appleMail) Configure(imapPort, smtpPort int, imapSSL, smtpSSL bool, user types.BridgeUser, addressIndex int) error { //nolint[funlen]
+func (c *appleMail) Configure(imapPort, smtpPort int, imapSSL, smtpSSL bool, user types.User, addressIndex int) error { //nolint[funlen]
 	var addresses string
 	var displayName string
 

internal/frontend/autoconfig/autoconfig.go

@@ -23,7 +23,7 @@ import "github.com/ProtonMail/proton-bridge/internal/frontend/types"
 
 type AutoConfig interface {
 	Name() string
-	Configure(imapPort int, smtpPort int, imapSSl, smtpSSL bool, user types.BridgeUser, addressIndex int) error
+	Configure(imapPort int, smtpPort int, imapSSl, smtpSSL bool, user types.User, addressIndex int) error
 }
 
 var available []AutoConfig //nolint[gochecknoglobals]

internal/frontend/cli-ie/account_utils.go

@@ -0,0 +1,100 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/abiosoft/ishell"
+)
+
+// completeUsernames is a helper to complete usernames as the user types.
+func (f *frontendCLI) completeUsernames(args []string) (usernames []string) {
+	if len(args) > 1 {
+		return
+	}
+	arg := ""
+	if len(args) == 1 {
+		arg = args[0]
+	}
+	for _, user := range f.ie.GetUsers() {
+		if strings.HasPrefix(strings.ToLower(user.Username()), strings.ToLower(arg)) {
+			usernames = append(usernames, user.Username())
+		}
+	}
+	return
+}
+
+// noAccountWrapper is a decorator for functions which need any account to be properly functional.
+func (f *frontendCLI) noAccountWrapper(callback func(*ishell.Context)) func(*ishell.Context) {
+	return func(c *ishell.Context) {
+		users := f.ie.GetUsers()
+		if len(users) == 0 {
+			f.Println("No active accounts. Please add account to continue.")
+		} else {
+			callback(c)
+		}
+	}
+}
+
+func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.User {
+	user := f.getUserByIndexOrName("")
+	if user != nil {
+		return user
+	}
+
+	numberOfAccounts := len(f.ie.GetUsers())
+	indexRange := fmt.Sprintf("number between 0 and %d", numberOfAccounts-1)
+	if len(c.Args) == 0 {
+		f.Printf("Please choose %s or username.\n", indexRange)
+		return nil
+	}
+	arg := c.Args[0]
+	user = f.getUserByIndexOrName(arg)
+	if user == nil {
+		f.Printf("Wrong input '%s'. Choose %s or username.\n", bold(arg), indexRange)
+		return nil
+	}
+	return user
+}
+
+func (f *frontendCLI) getUserByIndexOrName(arg string) types.User {
+	users := f.ie.GetUsers()
+	numberOfAccounts := len(users)
+	if numberOfAccounts == 0 {
+		return nil
+	}
+	if numberOfAccounts == 1 {
+		return users[0]
+	}
+	if index, err := strconv.Atoi(arg); err == nil {
+		if index < 0 || index >= numberOfAccounts {
+			return nil
+		}
+		return users[index]
+	}
+	for _, user := range users {
+		if user.Username() == arg {
+			return user
+		}
+	}
+	return nil
+}

internal/frontend/cli-ie/accounts.go

@@ -0,0 +1,153 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"strings"
+
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) listAccounts(c *ishell.Context) {
+	spacing := "%-2d: %-20s (%-15s, %-15s)\n"
+	f.Printf(bold(strings.Replace(spacing, "d", "s", -1)), "#", "account", "status", "address mode")
+	for idx, user := range f.ie.GetUsers() {
+		connected := "disconnected"
+		if user.IsConnected() {
+			connected = "connected"
+		}
+		mode := "split"
+		if user.IsCombinedAddressMode() {
+			mode = "combined"
+		}
+		f.Printf(spacing, idx, user.Username(), connected, mode)
+	}
+	f.Println()
+}
+
+func (f *frontendCLI) loginAccount(c *ishell.Context) { // nolint[funlen]
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	loginName := ""
+	if len(c.Args) > 0 {
+		user := f.getUserByIndexOrName(c.Args[0])
+		if user != nil {
+			loginName = user.GetPrimaryAddress()
+		}
+	}
+
+	if loginName == "" {
+		loginName = f.readStringInAttempts("Username", c.ReadLine, isNotEmpty)
+		if loginName == "" {
+			return
+		}
+	} else {
+		f.Println("Username:", loginName)
+	}
+
+	password := f.readStringInAttempts("Password", c.ReadPassword, isNotEmpty)
+	if password == "" {
+		return
+	}
+
+	f.Println("Authenticating ... ")
+	client, auth, err := f.ie.Login(loginName, password)
+	if err != nil {
+		f.processAPIError(err)
+		return
+	}
+
+	if auth.HasTwoFactor() {
+		twoFactor := f.readStringInAttempts("Two factor code", c.ReadLine, isNotEmpty)
+		if twoFactor == "" {
+			return
+		}
+
+		_, err = client.Auth2FA(twoFactor, auth)
+		if err != nil {
+			f.processAPIError(err)
+			return
+		}
+	}
+
+	mailboxPassword := password
+	if auth.HasMailboxPassword() {
+		mailboxPassword = f.readStringInAttempts("Mailbox password", c.ReadPassword, isNotEmpty)
+	}
+	if mailboxPassword == "" {
+		return
+	}
+
+	f.Println("Adding account ...")
+	user, err := f.ie.FinishLogin(client, auth, mailboxPassword)
+	if err != nil {
+		log.WithField("username", loginName).WithError(err).Error("Login was unsuccessful")
+		f.Println("Adding account was unsuccessful:", err)
+		return
+	}
+
+	f.Printf("Account %s was added successfully.\n", bold(user.Username()))
+}
+
+func (f *frontendCLI) logoutAccount(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return
+	}
+	if f.yesNoQuestion("Are you sure you want to logout account " + bold(user.Username())) {
+		if err := user.Logout(); err != nil {
+			f.printAndLogError("Logging out failed: ", err)
+		}
+	}
+}
+
+func (f *frontendCLI) deleteAccount(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return
+	}
+	if f.yesNoQuestion("Are you sure you want to " + bold("remove account "+user.Username())) {
+		clearCache := f.yesNoQuestion("Do you want to remove cache for this account")
+		if err := f.ie.DeleteUser(user.ID(), clearCache); err != nil {
+			f.printAndLogError("Cannot delete account: ", err)
+			return
+		}
+	}
+}
+
+func (f *frontendCLI) deleteAccounts(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	if !f.yesNoQuestion("Do you really want remove all accounts") {
+		return
+	}
+	for _, user := range f.ie.GetUsers() {
+		if err := f.ie.DeleteUser(user.ID(), false); err != nil {
+			f.printAndLogError("Cannot delete account ", user.Username(), ": ", err)
+		}
+	}
+	c.Println("Keychain cleared")
+}

internal/frontend/cli-ie/frontend.go

@@ -0,0 +1,237 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Package cliie provides CLI interface of the Import-Export app.
+package cliie
+
+import (
+	"github.com/ProtonMail/proton-bridge/internal/events"
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/listener"
+
+	"github.com/abiosoft/ishell"
+	"github.com/sirupsen/logrus"
+)
+
+var (
+	log = logrus.WithField("pkg", "frontend/cli-ie") //nolint[gochecknoglobals]
+)
+
+type frontendCLI struct {
+	*ishell.Shell
+
+	config        *config.Config
+	eventListener listener.Listener
+	updates       types.Updater
+	ie            types.ImportExporter
+
+	appRestart bool
+}
+
+// New returns a new CLI frontend configured with the given options.
+func New( //nolint[funlen]
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie types.ImportExporter,
+) *frontendCLI { //nolint[golint]
+	fe := &frontendCLI{
+		Shell: ishell.New(),
+
+		config:        config,
+		eventListener: eventListener,
+		updates:       updates,
+		ie:            ie,
+
+		appRestart: false,
+	}
+
+	// Clear commands.
+	clearCmd := &ishell.Cmd{Name: "clear",
+		Help:    "remove stored accounts and preferences. (alias: cl)",
+		Aliases: []string{"cl"},
+	}
+	clearCmd.AddCmd(&ishell.Cmd{Name: "accounts",
+		Help:    "remove all accounts from keychain. (aliases: a, k, keychain)",
+		Aliases: []string{"a", "k", "keychain"},
+		Func:    fe.deleteAccounts,
+	})
+	fe.AddCmd(clearCmd)
+
+	// Check commands.
+	checkCmd := &ishell.Cmd{Name: "check", Help: "check internet connection or new version."}
+	checkCmd.AddCmd(&ishell.Cmd{Name: "updates",
+		Help:    "check for Import-Export updates. (aliases: u, v, version)",
+		Aliases: []string{"u", "version", "v"},
+		Func:    fe.checkUpdates,
+	})
+	checkCmd.AddCmd(&ishell.Cmd{Name: "internet",
+		Help:    "check internet connection. (aliases: i, conn, connection)",
+		Aliases: []string{"i", "con", "connection"},
+		Func:    fe.checkInternetConnection,
+	})
+	fe.AddCmd(checkCmd)
+
+	// Print info commands.
+	fe.AddCmd(&ishell.Cmd{Name: "log-dir",
+		Help:    "print path to directory with logs. (aliases: log, logs)",
+		Aliases: []string{"log", "logs"},
+		Func:    fe.printLogDir,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "manual",
+		Help:    "print URL with instructions. (alias: man)",
+		Aliases: []string{"man"},
+		Func:    fe.printManual,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "release-notes",
+		Help:    "print release notes. (aliases: notes, fixed-bugs, bugs, ver, version)",
+		Aliases: []string{"notes", "fixed-bugs", "bugs", "ver", "version"},
+		Func:    fe.printLocalReleaseNotes,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "credits",
+		Help: "print used resources.",
+		Func: fe.printCredits,
+	})
+
+	// Account commands.
+	fe.AddCmd(&ishell.Cmd{Name: "list",
+		Help:    "print the list of accounts. (aliases: l, ls)",
+		Func:    fe.noAccountWrapper(fe.listAccounts),
+		Aliases: []string{"l", "ls"},
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "login",
+		Help:      "login procedure to add or connect account. Optionally use index or account as parameter. (aliases: a, add, con, connect)",
+		Func:      fe.loginAccount,
+		Aliases:   []string{"add", "a", "con", "connect"},
+		Completer: fe.completeUsernames,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "logout",
+		Help:      "disconnect the account. Use index or account name as parameter. (aliases: d, disconnect)",
+		Func:      fe.noAccountWrapper(fe.logoutAccount),
+		Aliases:   []string{"d", "disconnect"},
+		Completer: fe.completeUsernames,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "delete",
+		Help:      "remove the account from keychain. Use index or account name as parameter. (aliases: del, rm, remove)",
+		Func:      fe.noAccountWrapper(fe.deleteAccount),
+		Aliases:   []string{"del", "rm", "remove"},
+		Completer: fe.completeUsernames,
+	})
+
+	// Import-Export commands.
+	importCmd := &ishell.Cmd{Name: "import",
+		Help:    "import messages. (alias: imp)",
+		Aliases: []string{"imp"},
+	}
+	importCmd.AddCmd(&ishell.Cmd{Name: "local",
+		Help:    "import local messages. (aliases: loc)",
+		Func:    fe.noAccountWrapper(fe.importLocalMessages),
+		Aliases: []string{"loc"},
+	})
+	importCmd.AddCmd(&ishell.Cmd{Name: "remote",
+		Help:    "import remote messages. (aliases: rem)",
+		Func:    fe.noAccountWrapper(fe.importRemoteMessages),
+		Aliases: []string{"rem"},
+	})
+	fe.AddCmd(importCmd)
+
+	exportCmd := &ishell.Cmd{Name: "export",
+		Help:    "export messages. (alias: exp)",
+		Aliases: []string{"exp"},
+	}
+	exportCmd.AddCmd(&ishell.Cmd{Name: "eml",
+		Help: "export messages to eml files.",
+		Func: fe.noAccountWrapper(fe.exportMessagesToEML),
+	})
+	exportCmd.AddCmd(&ishell.Cmd{Name: "mbox",
+		Help: "export messages to mbox files.",
+		Func: fe.noAccountWrapper(fe.exportMessagesToMBOX),
+	})
+	fe.AddCmd(exportCmd)
+
+	// System commands.
+	fe.AddCmd(&ishell.Cmd{Name: "restart",
+		Help: "restart the Import-Export app.",
+		Func: fe.restart,
+	})
+
+	go func() {
+		defer panicHandler.HandlePanic()
+		fe.watchEvents()
+	}()
+	fe.eventListener.RetryEmit(events.TLSCertIssue)
+	fe.eventListener.RetryEmit(events.ErrorEvent)
+	return fe
+}
+
+func (f *frontendCLI) watchEvents() {
+	errorCh := f.getEventChannel(events.ErrorEvent)
+	internetOffCh := f.getEventChannel(events.InternetOffEvent)
+	internetOnCh := f.getEventChannel(events.InternetOnEvent)
+	addressChangedLogoutCh := f.getEventChannel(events.AddressChangedLogoutEvent)
+	logoutCh := f.getEventChannel(events.LogoutEvent)
+	certIssue := f.getEventChannel(events.TLSCertIssue)
+	for {
+		select {
+		case errorDetails := <-errorCh:
+			f.Println("Import-Export failed:", errorDetails)
+		case <-internetOffCh:
+			f.notifyInternetOff()
+		case <-internetOnCh:
+			f.notifyInternetOn()
+		case address := <-addressChangedLogoutCh:
+			f.notifyLogout(address)
+		case userID := <-logoutCh:
+			user, err := f.ie.GetUser(userID)
+			if err != nil {
+				return
+			}
+			f.notifyLogout(user.Username())
+		case <-certIssue:
+			f.notifyCertIssue()
+		}
+	}
+}
+
+func (f *frontendCLI) getEventChannel(event string) <-chan string {
+	ch := make(chan string)
+	f.eventListener.Add(event, ch)
+	return ch
+}
+
+// IsAppRestarting returns whether the app is currently set to restart.
+func (f *frontendCLI) IsAppRestarting() bool {
+	return f.appRestart
+}
+
+// Loop starts the frontend loop with an interactive shell.
+func (f *frontendCLI) Loop(credentialsError error) error {
+	if credentialsError != nil {
+		f.notifyCredentialsError()
+		return credentialsError
+	}
+
+	f.Print(`
+Welcome to ProtonMail Import-Export app interactive shell
+
+WARNING: The CLI is an experimental feature and does not yet cover all functionality.
+	`)
+	f.Run()
+	return nil
+}

internal/frontend/cli-ie/importexport.go

@@ -0,0 +1,224 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) importLocalMessages(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user, path := f.getUserAndPath(c, false)
+	if user == nil || path == "" {
+		return
+	}
+
+	t, err := f.ie.GetLocalImporter(user.GetPrimaryAddress(), path)
+	f.transfer(t, err, false, true)
+}
+
+func (f *frontendCLI) importRemoteMessages(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return
+	}
+
+	username := f.readStringInAttempts("IMAP username", c.ReadLine, isNotEmpty)
+	if username == "" {
+		return
+	}
+	password := f.readStringInAttempts("IMAP password", c.ReadPassword, isNotEmpty)
+	if password == "" {
+		return
+	}
+	host := f.readStringInAttempts("IMAP host", c.ReadLine, isNotEmpty)
+	if host == "" {
+		return
+	}
+	port := f.readStringInAttempts("IMAP port", c.ReadLine, isNotEmpty)
+	if port == "" {
+		return
+	}
+
+	t, err := f.ie.GetRemoteImporter(user.GetPrimaryAddress(), username, password, host, port)
+	f.transfer(t, err, false, true)
+}
+
+func (f *frontendCLI) exportMessagesToEML(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user, path := f.getUserAndPath(c, true)
+	if user == nil || path == "" {
+		return
+	}
+
+	t, err := f.ie.GetEMLExporter(user.GetPrimaryAddress(), path)
+	f.transfer(t, err, true, false)
+}
+
+func (f *frontendCLI) exportMessagesToMBOX(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user, path := f.getUserAndPath(c, true)
+	if user == nil || path == "" {
+		return
+	}
+
+	t, err := f.ie.GetMBOXExporter(user.GetPrimaryAddress(), path)
+	f.transfer(t, err, true, false)
+}
+
+func (f *frontendCLI) getUserAndPath(c *ishell.Context, createPath bool) (types.User, string) {
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return nil, ""
+	}
+
+	path := f.readStringInAttempts("Path of EML and MBOX files", c.ReadLine, isNotEmpty)
+	if path == "" {
+		return nil, ""
+	}
+
+	if createPath {
+		_ = os.Mkdir(path, os.ModePerm)
+	}
+
+	return user, path
+}
+
+func (f *frontendCLI) transfer(t *transfer.Transfer, err error, askSkipEncrypted bool, askGlobalMailbox bool) {
+	if err != nil {
+		f.printAndLogError("Failed to init transferrer: ", err)
+		return
+	}
+
+	if askSkipEncrypted {
+		skipEncryptedMessages := f.yesNoQuestion("Skip encrypted messages")
+		t.SetSkipEncryptedMessages(skipEncryptedMessages)
+	}
+
+	if !f.setTransferRules(t) {
+		return
+	}
+
+	if askGlobalMailbox {
+		if err := f.setTransferGlobalMailbox(t); err != nil {
+			f.printAndLogError("Failed to create global mailbox: ", err)
+			return
+		}
+	}
+
+	progress := t.Start()
+	for range progress.GetUpdateChannel() {
+		f.printTransferProgress(progress)
+	}
+	f.printTransferResult(progress)
+}
+
+func (f *frontendCLI) setTransferGlobalMailbox(t *transfer.Transfer) error {
+	labelName := fmt.Sprintf("Imported %s", time.Now().Format("Jan-02-2006 15:04"))
+
+	useGlobalLabel := f.yesNoQuestion("Use global label " + labelName)
+	if !useGlobalLabel {
+		return nil
+	}
+
+	globalMailbox, err := t.CreateTargetMailbox(transfer.Mailbox{
+		Name:        labelName,
+		Color:       pmapi.LabelColors[0],
+		IsExclusive: false,
+	})
+	if err != nil {
+		return err
+	}
+
+	t.SetGlobalMailbox(&globalMailbox)
+	return nil
+}
+
+func (f *frontendCLI) setTransferRules(t *transfer.Transfer) bool {
+	f.Println("Rules:")
+	for _, rule := range t.GetRules() {
+		if !rule.Active {
+			continue
+		}
+		targets := strings.Join(rule.TargetMailboxNames(), ", ")
+		if rule.HasTimeLimit() {
+			f.Printf(" %-30s → %s (%s - %s)\n", rule.SourceMailbox.Name, targets, rule.FromDate(), rule.ToDate())
+		} else {
+			f.Printf(" %-30s → %s\n", rule.SourceMailbox.Name, targets)
+		}
+	}
+
+	return f.yesNoQuestion("Proceed")
+}
+
+func (f *frontendCLI) printTransferProgress(progress *transfer.Progress) {
+	failed, imported, exported, added, total := progress.GetCounts()
+	if total != 0 {
+		f.Println(fmt.Sprintf("Progress update: %d (%d / %d) / %d, failed: %d", imported, exported, added, total, failed))
+	}
+
+	if progress.IsPaused() {
+		f.Printf("Transfer is paused bacause %s", progress.PauseReason())
+		if !f.yesNoQuestion("Continue (y) or stop (n)") {
+			progress.Stop()
+		}
+	}
+}
+
+func (f *frontendCLI) printTransferResult(progress *transfer.Progress) {
+	err := progress.GetFatalError()
+	if err != nil {
+		f.Println("Transfer failed: " + err.Error())
+		return
+	}
+
+	statuses := progress.GetFailedMessages()
+	if len(statuses) == 0 {
+		f.Println("Transfer finished!")
+		return
+	}
+
+	f.Println("Transfer finished with errors:")
+	for _, messageStatus := range statuses {
+		f.Printf(
+			" %-17s | %-30s | %-30s\n  %s: %s\n",
+			messageStatus.Time.Format("Jan 02 2006 15:04"),
+			messageStatus.From,
+			messageStatus.Subject,
+			messageStatus.SourceID,
+			messageStatus.GetErrorMessage(),
+		)
+	}
+}

internal/frontend/cli-ie/system.go

@@ -0,0 +1,46 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) restart(c *ishell.Context) {
+	if f.yesNoQuestion("Are you sure you want to restart the Import-Export app") {
+		f.Println("Restarting the Import-Export app...")
+		f.appRestart = true
+		f.Stop()
+	}
+}
+
+func (f *frontendCLI) checkInternetConnection(c *ishell.Context) {
+	if f.ie.CheckConnection() == nil {
+		f.Println("Internet connection is available.")
+	} else {
+		f.Println("Can not contact the server, please check your internet connection.")
+	}
+}
+
+func (f *frontendCLI) printLogDir(c *ishell.Context) {
+	f.Println("Log files are stored in\n\n ", f.config.GetLogDir())
+}
+
+func (f *frontendCLI) printManual(c *ishell.Context) {
+	f.Println("More instructions about the Import-Export app can be found at\n\n  https://protonmail.com/support/categories/import-export/")
+}

internal/frontend/cli-ie/updates.go

@@ -0,0 +1,65 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) checkUpdates(c *ishell.Context) {
+	isUpToDate, latestVersionInfo, err := f.updates.CheckIsUpToDate()
+	if err != nil {
+		f.printAndLogError("Cannot retrieve version info: ", err)
+		f.checkInternetConnection(c)
+		return
+	}
+	if isUpToDate {
+		f.Println("Your version is up to date.")
+	} else {
+		f.notifyNeedUpgrade()
+		f.Println("")
+		f.printReleaseNotes(latestVersionInfo)
+	}
+}
+
+func (f *frontendCLI) printLocalReleaseNotes(c *ishell.Context) {
+	localVersion := f.updates.GetLocalVersion()
+	f.printReleaseNotes(localVersion)
+}
+
+func (f *frontendCLI) printReleaseNotes(versionInfo updates.VersionInfo) {
+	f.Println(bold("ProtonMail Import-Export app "+versionInfo.Version), "\n")
+	if versionInfo.ReleaseNotes != "" {
+		f.Println(bold("Release Notes"))
+		f.Println(versionInfo.ReleaseNotes)
+	}
+	if versionInfo.ReleaseFixedBugs != "" {
+		f.Println(bold("Fixed bugs"))
+		f.Println(versionInfo.ReleaseFixedBugs)
+	}
+}
+
+func (f *frontendCLI) printCredits(c *ishell.Context) {
+	for _, pkg := range strings.Split(importexport.Credits, ";") {
+		f.Println(pkg)
+	}
+}

internal/frontend/cli-ie/utils.go

@@ -0,0 +1,123 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"strings"
+
+	pmapi "github.com/ProtonMail/proton-bridge/pkg/pmapi"
+	"github.com/fatih/color"
+)
+
+const (
+	maxInputRepeat = 2
+)
+
+var (
+	bold = color.New(color.Bold).SprintFunc() //nolint[gochecknoglobals]
+)
+
+func isNotEmpty(val string) bool {
+	return val != ""
+}
+
+func (f *frontendCLI) yesNoQuestion(question string) bool {
+	f.Print(question, "? yes/"+bold("no")+": ")
+	yes := "yes"
+	answer := strings.ToLower(f.ReadLine())
+	for i := 0; i < len(answer); i++ {
+		if i >= len(yes) || answer[i] != yes[i] {
+			return false // Everything else is false.
+		}
+	}
+	return len(answer) > 0 // Empty is false.
+}
+
+func (f *frontendCLI) readStringInAttempts(title string, readFunc func() string, isOK func(string) bool) (value string) {
+	f.Printf("%s: ", title)
+	value = readFunc()
+	title = strings.ToLower(string(title[0])) + title[1:]
+	for i := 0; !isOK(value); i++ {
+		if i >= maxInputRepeat {
+			f.Println("Too many attempts")
+			return ""
+		}
+		f.Printf("Please fill %s: ", title)
+		value = readFunc()
+	}
+	return
+}
+
+func (f *frontendCLI) printAndLogError(args ...interface{}) {
+	log.Error(args...)
+	f.Println(args...)
+}
+
+func (f *frontendCLI) processAPIError(err error) {
+	log.Warn("API error: ", err)
+	switch err {
+	case pmapi.ErrAPINotReachable:
+		f.notifyInternetOff()
+	case pmapi.ErrUpgradeApplication:
+		f.notifyNeedUpgrade()
+	default:
+		f.Println("Server error:", err.Error())
+	}
+}
+
+func (f *frontendCLI) notifyInternetOff() {
+	f.Println("Internet connection is not available.")
+}
+
+func (f *frontendCLI) notifyInternetOn() {
+	f.Println("Internet connection is available again.")
+}
+
+func (f *frontendCLI) notifyLogout(address string) {
+	f.Printf("Account %s is disconnected. Login to continue using this account with email client.", address)
+}
+
+func (f *frontendCLI) notifyNeedUpgrade() {
+	f.Println("Please download and install the newest version of application from", f.updates.GetDownloadLink())
+}
+
+func (f *frontendCLI) notifyCredentialsError() {
+	// Print in 80-column width.
+	f.Println("ProtonMail Import-Export app is not able to detect a supported password manager")
+	f.Println("(pass, gnome-keyring). Please install and set up a supported password manager")
+	f.Println("and restart the application.")
+}
+
+func (f *frontendCLI) notifyCertIssue() {
+	// Print in 80-column width.
+	f.Println(`Connection security error: Your network connection to Proton services may
+be insecure.
+
+Description:
+ProtonMail Import-Export was not able to establish a secure connection to Proton
+servers due to a TLS certificate error. This means your connection may
+potentially be insecure and susceptible to monitoring by third parties.
+
+Recommendation:
+* If you trust your network operator, you can continue to use ProtonMail
+  as usual.
+* If you don't trust your network operator, reconnect to ProtonMail over a VPN
+  (such as ProtonVPN) which encrypts your Internet connection, or use
+  a different network to access ProtonMail.
+`)
+}

internal/frontend/cli/account_utils.go

@@ -55,7 +55,7 @@ func (f *frontendCLI) noAccountWrapper(callback func(*ishell.Context)) func(*ish
 	}
 }
 
-func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.BridgeUser {
+func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.User {
 	user := f.getUserByIndexOrName("")
 	if user != nil {
 		return user
@@ -76,7 +76,7 @@ func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.BridgeUser {
 	return user
 }
 
-func (f *frontendCLI) getUserByIndexOrName(arg string) types.BridgeUser {
+func (f *frontendCLI) getUserByIndexOrName(arg string) types.User {
 	users := f.bridge.GetUsers()
 	numberOfAccounts := len(users)
 	if numberOfAccounts == 0 {

internal/frontend/cli/accounts.go

@@ -63,7 +63,7 @@ func (f *frontendCLI) showAccountInfo(c *ishell.Context) {
 	}
 }
 
-func (f *frontendCLI) showAccountAddressInfo(user types.BridgeUser, address string) {
+func (f *frontendCLI) showAccountAddressInfo(user types.User, address string) {
 	smtpSecurity := "STARTTLS"
 	if f.preferences.GetBool(preferences.SMTPSSLKey) {
 		smtpSecurity = "SSL"

internal/frontend/cli/frontend.go

@@ -76,7 +76,7 @@ func New( //nolint[funlen]
 		Func:    fe.deleteCache,
 	})
 	clearCmd.AddCmd(&ishell.Cmd{Name: "accounts",
-		Help:    "remove all accounts from keychain. (aliases: k, keychain)",
+		Help:    "remove all accounts from keychain. (aliases: a, k, keychain)",
 		Aliases: []string{"a", "k", "keychain"},
 		Func:    fe.deleteAccounts,
 	})

internal/frontend/cli/system.go

@@ -43,7 +43,7 @@ func (f *frontendCLI) checkInternetConnection(c *ishell.Context) {
 	if f.bridge.CheckConnection() == nil {
 		f.Println("Internet connection is available.")
 	} else {
-		f.Println("Can not contact server please check you internet connection.")
+		f.Println("Can not contact the server, please check your internet connection.")
 	}
 }
 

internal/frontend/cli/updates.go

@@ -21,12 +21,12 @@ import (
 	"strings"
 
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
-	"github.com/ProtonMail/proton-bridge/pkg/updates"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
 	"github.com/abiosoft/ishell"
 )
 
 func (f *frontendCLI) checkUpdates(c *ishell.Context) {
-	isUpToDate, latestVersionInfo, err := f.updates.CheckIsBridgeUpToDate()
+	isUpToDate, latestVersionInfo, err := f.updates.CheckIsUpToDate()
 	if err != nil {
 		f.printAndLogError("Cannot retrieve version info: ", err)
 		f.checkInternetConnection(c)

internal/frontend/frontend.go

@@ -22,8 +22,11 @@ import (
 	"github.com/0xAX/notificator"
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/cli"
+	cliie "github.com/ProtonMail/proton-bridge/internal/frontend/cli-ie"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/qt"
+	qtie "github.com/ProtonMail/proton-bridge/internal/frontend/qt-ie"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
 	"github.com/ProtonMail/proton-bridge/pkg/config"
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 	"github.com/sirupsen/logrus"
@@ -40,12 +43,12 @@ type Frontend interface {
 }
 
 // HandlePanic handles panics which occur for users with GUI.
-func HandlePanic() {
+func HandlePanic(appName string) {
 	notify := notificator.New(notificator.Options{
 		DefaultIcon: "../frontend/ui/icon/icon.png",
-		AppName:     "ProtonMail Bridge",
+		AppName:     appName,
 	})
-	_ = notify.Push("Fatal Error", "The ProtonMail Bridge has encountered a fatal error. ", "/frontend/icon/icon.png", notificator.UR_CRITICAL)
+	_ = notify.Push("Fatal Error", "The "+appName+" has encountered a fatal error. ", "/frontend/icon/icon.png", notificator.UR_CRITICAL)
 }
 
 // New returns initialized frontend based on `frontendType`, which can be `cli` or `qt`.
@@ -86,3 +89,36 @@ func new(
 		return qt.New(version, buildVersion, showWindowOnStart, panicHandler, config, preferences, eventListener, updates, bridge, noEncConfirmator)
 	}
 }
+
+// NewImportExport returns initialized frontend based on `frontendType`, which can be `cli` or `qt`.
+func NewImportExport(
+	version,
+	buildVersion,
+	frontendType string,
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie *importexport.ImportExport,
+) Frontend {
+	ieWrap := types.NewImportExportWrap(ie)
+	return newImportExport(version, buildVersion, frontendType, panicHandler, config, eventListener, updates, ieWrap)
+}
+
+func newImportExport(
+	version,
+	buildVersion,
+	frontendType string,
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie types.ImportExporter,
+) Frontend {
+	switch frontendType {
+	case "cli":
+		return cliie.New(panicHandler, config, eventListener, updates, ie)
+	default:
+		return qtie.New(version, buildVersion, panicHandler, config, eventListener, updates, ie)
+	}
+}

internal/frontend/qml/GuiIE.qml

@@ -0,0 +1,418 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// This is main qml file
+
+import QtQuick 2.8
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+// All imports from dynamic must be loaded before
+import QtQuick.Window 2.2
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+
+Item {
+    id: gui
+    property alias winMain: winMain
+    property bool isFirstWindow: true
+    property int warningFlags: 0
+
+    property var locale    : Qt.locale("en_US")
+    property date netBday  : new Date("1989-03-13T00:00:00")
+    property var allYears  : getYearList(1970,(new Date()).getFullYear())
+    property var allMonths : getMonthList(1,12)
+    property var allDays   : getDayList(1,31)
+
+    property var enums : JSON.parse('{"pathOK":1,"pathEmptyPath":2,"pathWrongPath":4,"pathNotADir":8,"pathWrongPermissions":16,"pathDirEmpty":32,"errUnknownError":0,"errEventAPILogout":1,"errUpdateAPI":2,"errUpdateJSON":3,"errUserAuth":4,"errQApplication":18,"errEmailExportFailed":6,"errEmailExportMissing":7,"errNothingToImport":8,"errEmailImportFailed":12,"errDraftImportFailed":13,"errDraftLabelFailed":14,"errEncryptMessageAttachment":15,"errEncryptMessage":16,"errNoInternetWhileImport":17,"errUnlockUser":5,"errSourceMessageNotSelected":19,"errCannotParseMail":5000,"errWrongLoginOrPassword":5001,"errWrongServerPathOrPort":5002,"errWrongAuthMethod":5003,"errIMAPFetchFailed":5004,"errLocalSourceLoadFailed":1000,"errPMLoadFailed":1001,"errRemoteSourceLoadFailed":1002,"errLoadAccountList":1005,"errExit":1006,"errRetry":1007,"errAsk":1008,"errImportFailed":1009,"errCreateLabelFailed":1010,"errCreateFolderFailed":1011,"errUpdateLabelFailed":1012,"errUpdateFolderFailed":1013,"errFillFolderName":1014,"errSelectFolderColor":1015,"errNoInternet":1016,"folderTypeSystem":"system","folderTypeLabel":"label","folderTypeFolder":"folder","folderTypeExternal":"external","progressInit":"init","progressLooping":"looping","statusNoInternet":"noInternet","statusCheckingInternet":"internetCheck","statusNewVersionAvailable":"oldVersion","statusUpToDate":"upToDate","statusForceUpdate":"forceupdate"}')
+
+    IEStyle{}
+
+    MainWindow {
+        id: winMain
+
+        visible : true
+        Component.onCompleted: {
+            winMain.showAndRise()
+        }
+    }
+
+    BugReportWindow {
+        id:bugreportWin
+        clientVersion.visible: false
+        onPrefill : {
+            userAddress.text=""
+            if (accountsModel.count>0) {
+                var addressList = accountsModel.get(0).aliases.split(";")
+                if (addressList.length>0) {
+                    userAddress.text = addressList[0]
+                }
+            }
+        }
+    }
+
+    // Signals from Go
+    Connections {
+        target: go
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+        onProcessFinished :  {
+            winMain.dialogAddUser.hide()
+            winMain.dialogGlobal.hide()
+        }
+        onOpenManual : Qt.openUrlExternally("https://protonmail.com/support/categories/import-export/")
+
+        onNotifyBubble : {
+            //go.highlightSystray()
+            winMain.bubleNote.text = message
+            winMain.bubleNote.place(tabIndex)
+            winMain.bubleNote.show()
+            winMain.showAndRise()
+        }
+        onBubbleClosed : {
+            if (winMain.updateState=="uptodate") {
+                //go.normalSystray()
+            }
+        }
+
+        onSetConnectionStatus: {
+            go.isConnectionOK = isAvailable
+            if (go.isConnectionOK) {
+                if( winMain.updateState==gui.enums.statusNoInternet) {
+                    go.setUpdateState(gui.enums.statusUpToDate)
+                }
+            } else {
+                go.setUpdateState(gui.enums.statusNoInternet)
+            }
+        }
+
+        onRunCheckVersion : {
+            go.setUpdateState(gui.enums.statusUpToDate)
+            winMain.dialogGlobal.state=gui.enums.statusCheckingInternet
+            winMain.dialogGlobal.show()
+            go.isNewVersionAvailable(showMessage)
+        }
+
+        onSetUpdateState : {
+            // once app is outdated prevent from state change
+            if (winMain.updateState != gui.enums.statusForceUpdate) {
+                winMain.updateState = updateState
+            }
+        }
+
+        onSetAddAccountWarning : winMain.dialogAddUser.setWarning(message, 0)
+
+        onNotifyVersionIsTheLatest : {
+            winMain.popupMessage.show(
+                qsTr("You have the latest version!", "todo")
+            )
+        }
+
+        onNotifyError : {
+            var sep = go.errorDescription.indexOf("\n") < 0 ? go.errorDescription.length : go.errorDescription.indexOf("\n")
+            var name = go.errorDescription.slice(0, sep)
+            var errorMessage = go.errorDescription.slice(sep)
+            switch (errCode) {
+                case gui.enums.errPMLoadFailed :
+                winMain.popupMessage.show ( qsTr ( "Loading ProtonMail folders and labels was not successful."  , "Error message" )  )
+                winMain.dialogExport.hide()
+                break
+                case gui.enums.errLocalSourceLoadFailed  :
+                winMain.popupMessage.show(qsTr(
+                    "Loading local folder structure was not successful. "+
+                    "Folder does not contain valid MBOX or EML file.",
+                    "Error message when can not find correct files in folder."
+                ))
+                winMain.dialogImport.hide()
+                break
+                case gui.enums.errRemoteSourceLoadFailed : 
+                winMain.popupMessage.show ( qsTr ( "Loading remote source structure was not successful."        , "Error message" )  )
+                winMain.dialogImport.hide()
+                break
+                case gui.enums.errWrongServerPathOrPort      :
+                winMain.popupMessage.show ( qsTr ( "Cannot contact server - incorrect server address and port." , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break
+                case gui.enums.errWrongLoginOrPassword   :
+                winMain.popupMessage.show ( qsTr ( "Cannot authenticate - Incorrect email or password."     , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break ;
+                case gui.enums.errWrongAuthMethod   :
+                winMain.popupMessage.show ( qsTr ( "Cannot authenticate - Please use secured authentication method."     , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break ;
+
+
+                case gui.enums.errFillFolderName: 
+                winMain.popupMessage.show(qsTr (
+                    "Please fill the name.",
+                    "Error message when user did not fill the name of folder or label"
+                ))
+                break
+                case gui.enums.errCreateLabelFailed: 
+                winMain.popupMessage.show(qsTr(
+                    "Cannot create label with name \"%1\"\n%2",
+                    "Error message when it is not possible to create new label, arg1 folder name, arg2 error reason"
+                ).arg(name).arg(errorMessage))
+                break
+                case gui.enums.errCreateFolderFailed: 
+                winMain.popupMessage.show(qsTr(
+                    "Cannot create folder with name \"%1\"\n%2",
+                    "Error message when it is not possible to create new folder, arg1 folder name, arg2 error reason"
+                ).arg(name).arg(errorMessage))
+                break
+
+                case gui.enums.errNothingToImport:
+                winMain.popupMessage.show ( qsTr ( "No emails left to import after date range applied. Please, change the date range to continue."     , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break
+
+                case gui.enums.errNoInternetWhileImport:
+                case gui.enums.errNoInternet:
+                go.setConnectionStatus(false)
+                winMain.popupMessage.show ( go.canNotReachAPI )
+                break
+
+                case gui.enums.errPMAPIMessageTooLarge:
+                case gui.enums.errIMAPFetchFailed:
+                case gui.enums.errEmailImportFailed :
+                case gui.enums.errDraftImportFailed :
+                case gui.enums.errDraftLabelFailed :
+                case gui.enums.errEncryptMessageAttachment:
+                case gui.enums.errEncryptMessage:
+                //winMain.dialogImport.ask_retry_skip_cancel(name, errorMessage)
+                console.log("Import error", errCode, go.errorDescription)
+                winMain.popupMessage.show(qsTr("Error during import: \n%1\n please see log files for more details.", "message of generic error").arg(go.errorDescription))
+                winMain.dialogImport.hide()
+                break;
+
+                case gui.enums.errUnknownError  : default:
+                console.log("Unknown Error", errCode, go.errorDescription)
+                winMain.popupMessage.show(qsTr("The program encounter an unknown error \n%1\n please see log files for more details.", "message of generic error").arg(go.errorDescription))
+                winMain.dialogExport.hide()
+                winMain.dialogImport.hide()
+                winMain.dialogAddUser.hide()
+                winMain.dialogGlobal.hide()
+            }
+        }
+
+        onNotifyUpdate : {
+            go.setUpdateState("forceUpdate")
+            if (!winMain.dialogUpdate.visible) {
+                gui.openMainWindow(true)
+                go.runCheckVersion(false)
+                winMain.dialogUpdate.show()
+            }
+        }
+
+        onNotifyLogout : {
+            go.notifyBubble(0, qsTr("Account %1 has been disconnected. Please log in to continue to use the Import-Export app with this account.").arg(accname) )
+        }
+
+        onNotifyAddressChanged : {
+            go.notifyBubble(0, qsTr("The address list has been changed for account %1. You may need to reconfigure the settings in your email client.").arg(accname) )
+        }
+
+        onNotifyAddressChangedLogout : {
+            go.notifyBubble(0, qsTr("The address list has been changed for account %1. You have to reconfigure the settings in your email client.").arg(accname) )
+        }
+
+
+        onNotifyKeychainRebuild : {
+            go.notifyBubble(1, qsTr(
+                "Your MacOS keychain is probably corrupted. Please consult the instructions in our <a href=\"https://protonmail.com/bridge/faq#c15\">FAQ</a>.",
+                "notification message"
+            ))
+        }
+
+        onNotifyHasNoKeychain : {
+            gui.winMain.dialogGlobal.state="noKeychain"
+            gui.winMain.dialogGlobal.show()
+        }
+
+
+        onExportStructureLoadFinished: {
+            if (okay) winMain.dialogExport.okay()
+            else winMain.dialogExport.cancel()
+        }
+        onImportStructuresLoadFinished: {
+            if (okay) winMain.dialogImport.okay()
+            else winMain.dialogImport.cancel()
+        }
+
+        onSimpleErrorHappen: {
+            if (winMain.dialogImport.visible == true) {
+                winMain.dialogImport.hide()
+            }
+            if (winMain.dialogExport.visible == true) {
+                winMain.dialogExport.hide()
+            }
+        }
+    }
+
+    function folderIcon(folderName, folderType) { // translations
+        switch (folderName.toLowerCase()) {
+            case "inbox"   : return Style.fa.inbox
+            case "sent"    : return Style.fa.send
+            case "spam"    :
+            case "junk"    : return Style.fa.ban
+            case "draft"   : return Style.fa.file_o
+            case "starred" : return Style.fa.star_o
+            case "trash"   : return Style.fa.trash_o
+            case "archive" : return Style.fa.archive
+            default: return folderType == gui.enums.folderTypeLabel ? Style.fa.tag : Style.fa.folder_open
+        }
+        return Style.fa.sticky_note_o
+    }
+
+    function folderTypeTitle(folderType) { // translations
+        if (folderType==gui.enums.folderTypeSystem ) return ""
+        if (folderType==gui.enums.folderTypeLabel  ) return qsTr("Labels"  , "todo")
+        if (folderType==gui.enums.folderTypeFolder ) return qsTr("Folders" , "todo")
+        return "Undef"
+    }
+
+    function isFolderEmpty() {
+        return "true"
+    }
+
+    function getUnixTime(dateString) {
+        var d = new Date(dateString)
+        var n = d.getTime()
+        if (n != n) return -1
+        return n
+    }
+
+    function getYearList(minY,maxY) {
+        var years  = new Array()
+        for (var i=0; i<=maxY-minY;i++) {
+            years[i] = (maxY-i).toString()
+        }
+        //console.log("getYearList:", years)
+        return years
+    }
+
+    function getMonthList(minM,maxM) {
+        var months = new Array()
+        for (var i=0; i<=maxM-minM;i++) {
+            var iMonth = new Date(1989,(i+minM-1),13)
+            months[i] = iMonth.toLocaleString(gui.locale, "MMM")
+        }
+        //console.log("getMonthList:", months[0], months)
+        return months
+    }
+
+    function getDayList(minD,maxD) {
+        var days = new Array()
+        for (var i=0; i<=maxD-minD;i++) {
+            days[i] = gui.prependZeros(i+minD,2)
+        }
+        return days
+    }
+
+    function prependZeros(num,desiredLength) {
+        var s = num+""
+        while (s.length < desiredLength) s="0"+s
+        return s
+    }
+
+    function daysInMonth(year,month) {
+        if (typeof(year) !== 'number') {
+            year = parseInt(year)
+        }
+        if (typeof(month) !== 'number') {
+            month = Date.fromLocaleDateString( gui.locale, "1970-"+month+"-10", "yyyy-MMM-dd").getMonth()+1
+        }
+        var maxDays = (new Date(year,month,0)).getDate()
+        if (isNaN(maxDays)) maxDays = 0
+        //console.log(" daysInMonth", year, month, maxDays)
+        return maxDays
+    }
+
+    function niceDateTime() {
+        var stamp = new Date()
+        var nice = getMonthList(stamp.getMonth()+1, stamp.getMonth()+1)[0]
+        nice += "-" + getDayList(stamp.getDate(), stamp.getDate())[0]
+        nice += "-" + getYearList(stamp.getFullYear(), stamp.getFullYear())[0]
+        nice += " " + gui.prependZeros(stamp.getHours(),2)
+        nice += ":" + gui.prependZeros(stamp.getMinutes(),2)
+        return nice
+    }
+
+    /*
+     // Debug
+     Connections {
+         target: structureExternal
+
+         onDataChanged: {
+             console.log("external data changed")
+         }
+     }
+
+     // Debug
+     Connections {
+         target: structurePM
+
+         onSelectedLabelsChanged: console.log("PM sel labels:", structurePM.selectedLabels)
+         onSelectedFoldersChanged: console.log("PM sel folders:", structurePM.selectedFolders)
+         onDataChanged: {
+             console.log("PM data changed")
+         }
+     }
+     */
+
+    Timer {
+        id: checkVersionTimer
+        repeat : true
+        triggeredOnStart: false
+        interval : Style.main.verCheckRepeatTime
+        onTriggered : go.runCheckVersion(false)
+    }
+
+    property string  areYouSureYouWantToQuit : qsTr("There are incomplete processes - some items are not yet transferred. Do you really want to stop and quit?")
+    // On start
+    Component.onCompleted : {
+        // set spell messages
+        go.wrongCredentials       = qsTr("Incorrect username or password."                               , "notification", -1)
+        go.wrongMailboxPassword   = qsTr("Incorrect mailbox password."                                   , "notification", -1)
+        go.canNotReachAPI         = qsTr("Cannot contact server, please check your internet connection." , "notification", -1)
+        go.versionCheckFailed     = qsTr("Version check was unsuccessful. Please try again later."       , "notification", -1)
+        go.credentialsNotRemoved  = qsTr("Credentials could not be removed."                             , "notification", -1)
+        go.bugNotSent             = qsTr("Unable to submit bug report."                                  , "notification", -1)
+        go.bugReportSent          = qsTr("Bug report successfully sent."                                 , "notification", -1)
+
+        go.runCheckVersion(false)
+        checkVersionTimer.start()
+
+        gui.allMonths = getMonthList(1,12)
+        gui.allMonthsChanged()
+    }
+}

internal/frontend/qml/ImportExportUI/AccountDelegate.qml

@@ -0,0 +1,432 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+// NOTE: Keep the Column so the height and width is inherited from content
+Column {
+    id: root
+    state: status
+    anchors.left: parent.left
+
+    property real row_width: 50 * Style.px
+    property int row_height: Style.accounts.heightAccount
+    property var listalias : aliases.split(";")
+    property int iAccount: index
+
+    property real spacingLastButtons: (row_width - exportAccount.anchors.leftMargin -Style.main.rightMargin - exportAccount.width - logoutAccount.width - deleteAccount.width)/2
+
+    Accessible.role: go.goos=="windows" ? Accessible.Grouping : Accessible.Row
+    Accessible.name: qsTr("Account %1, status %2", "Accessible text describing account row with arguments: account name and status (connected/disconnected), resp.").arg(account).arg(statusMark.text)
+    Accessible.description: Accessible.name
+    Accessible.ignored: !enabled || !visible
+
+    // Main row
+    Rectangle {
+        id: mainaccRow
+        anchors.left: parent.left
+        width  : row_width
+        height : row_height
+        state: { return isExpanded ? "expanded" : "collapsed" }
+        color: Style.main.background
+
+        property string actionName : (
+            isExpanded ?
+            qsTr("Collapse row for account %2", "Accessible text of button showing additional configuration of account") : 
+            qsTr("Expand row for account %2", "Accessible text of button hiding additional configuration of account")
+        ).  arg(account)
+
+
+        // override by other buttons
+        MouseArea {
+            id: mouseArea
+            anchors.fill: parent
+            onClicked : {
+                if (root.state=="connected") {
+                    mainaccRow.toggle_accountSettings()
+                }
+            }
+            cursorShape : root.state == "connected" ? Qt.PointingHandCursor : Qt.ArrowCursor
+            hoverEnabled: true
+            onEntered: {
+                if (mainaccRow.state=="collapsed") {
+                    mainaccRow.color = Qt.lighter(Style.main.background,1.1)
+                }
+            }
+            onExited: {
+                if (mainaccRow.state=="collapsed") {
+                    mainaccRow.color = Style.main.background
+                }
+            }
+        }
+
+        // toggle down/up icon
+        Text {
+            id: toggleIcon
+            anchors {
+                left           : parent.left
+                verticalCenter : parent.verticalCenter
+                leftMargin     : Style.main.leftMargin
+            }
+            color: Style.main.text
+            font {
+                pointSize : Style.accounts.sizeChevron * Style.pt
+                family    : Style.fontawesome.name
+            }
+            text: Style.fa.chevron_down
+
+            MouseArea {
+                anchors.fill: parent
+                onClicked : {
+                    if (root.state=="connected") {
+                        mainaccRow.toggle_accountSettings()
+                    }
+                }
+                cursorShape : root.state == "connected" ? Qt.PointingHandCursor : Qt.ArrowCursor
+                Accessible.role: Accessible.Button
+                Accessible.name: mainaccRow.actionName
+                Accessible.description: mainaccRow.actionName
+                Accessible.onPressAction : {
+                    if (root.state=="connected") {
+                        mainaccRow.toggle_accountSettings()
+                    }
+                }
+                Accessible.ignored: root.state!="connected" || !root.enabled
+            }
+        }
+
+        // account name
+        TextMetrics {
+            id: accountMetrics
+            font : accountName.font
+            elide: Qt.ElideMiddle
+            elideWidth: (
+                statusMark.anchors.leftMargin
+                - toggleIcon.anchors.leftMargin
+            )
+            text: account
+        }
+        Text {
+            id: accountName
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : toggleIcon.left
+                leftMargin     : Style.main.leftMargin
+            }
+            color: Style.main.text
+            font {
+                pointSize : (Style.main.fontSize+2*Style.px) * Style.pt
+            }
+            text: accountMetrics.elidedText
+        }
+
+        // status
+        ClickIconText {
+            id: statusMark
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : parent.left
+                leftMargin     : row_width/2
+            }
+            text      : qsTr("connected", "status of a listed logged-in account")
+            iconText  : Style.fa.circle_o
+            textColor : Style.main.textGreen
+            enabled   : false
+            Accessible.ignored: true
+        }
+
+        // export
+        ClickIconText {
+            id: exportAccount
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : parent.left
+                leftMargin     : 5.5*row_width/8
+            }
+            text      : qsTr("Export All", "todo")
+            iconText  : Style.fa.floppy_o
+            textBold  : true
+            textColor : Style.main.textBlue
+            onClicked: {
+                dialogExport.currentIndex = 0
+                dialogExport.address = account
+                dialogExport.show()
+            }
+        }
+
+        // logout
+        ClickIconText {
+            id: logoutAccount
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : exportAccount.right
+                leftMargin     : root.spacingLastButtons
+            }
+            text      : qsTr("Log out", "action to log out a connected account")
+            iconText  : Style.fa.power_off
+            textBold  : true
+            textColor : Style.main.textBlue
+        }
+
+        // remove
+        ClickIconText {
+            id: deleteAccount
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : logoutAccount.right
+                leftMargin     : root.spacingLastButtons
+            }
+            text      : qsTr("Remove", "deletes an account from the account settings page")
+            iconText  : Style.fa.trash_o
+            textColor : Style.main.text
+            onClicked : {
+                dialogGlobal.input=iAccount
+                dialogGlobal.state="deleteUser"
+                dialogGlobal.show()
+            }
+        }
+
+
+        // functions
+        function toggle_accountSettings() {
+            if (root.state=="connected") {
+                if (mainaccRow.state=="collapsed" ) {
+                    mainaccRow.state="expanded"
+                } else {
+                    mainaccRow.state="collapsed"
+                }
+            }
+        }
+
+        states: [
+            State {
+                name: "collapsed"
+                PropertyChanges { target : toggleIcon  ; text      : root.state=="connected" ? Style.fa.chevron_down : " " }
+                PropertyChanges { target : accountName ; font.bold : false                 }
+                PropertyChanges { target : mainaccRow  ; color     : Style.main.background }
+                PropertyChanges { target : addressList ; visible   : false                 }
+            },
+            State {
+                name: "expanded"
+                PropertyChanges { target : toggleIcon  ; text      : Style.fa.chevron_up               }
+                PropertyChanges { target : accountName ; font.bold : true                              }
+                PropertyChanges { target : mainaccRow  ; color     : Style.accounts.backgroundExpanded }
+                PropertyChanges { target : addressList ; visible   : true                              }
+            }
+        ]
+    }
+
+    // List of adresses
+    Column {
+        id: addressList
+        anchors.left : parent.left
+        width: row_width
+        visible: false
+        property alias model : repeaterAddresses.model
+
+        Repeater {
+            id: repeaterAddresses
+            model: ["one", "two"]
+
+            Rectangle {
+                id: addressRow
+                anchors {
+                    left  : parent.left
+                    right : parent.right
+                }
+                height: Style.accounts.heightAddrRow
+                color: Style.accounts.backgroundExpanded
+
+                // iconText level down
+                Text {
+                    id: levelDown
+                    anchors {
+                        left           : parent.left
+                        leftMargin     : Style.accounts.leftMarginAddr
+                        verticalCenter : wrapAddr.verticalCenter
+                    }
+                    text        : Style.fa.level_up
+                    font.family : Style.fontawesome.name
+                    color       : Style.main.textDisabled
+                    rotation    : 90
+                }
+
+                Rectangle {
+                    id: wrapAddr
+                    anchors {
+                        top         : parent.top
+                        left        : levelDown.right
+                        right       : parent.right
+                        leftMargin  : Style.main.leftMargin
+                        rightMargin : Style.main.rightMargin
+                    }
+                    height: Style.accounts.heightAddr
+                    border {
+                        width : Style.main.border
+                        color : Style.main.line
+                    }
+                    color: Style.accounts.backgroundAddrRow
+
+                    TextMetrics {
+                        id: addressMetrics
+                        font: address.font
+                        elideWidth: (
+                            wrapAddr.width
+                            - address.anchors.leftMargin
+                            - 2*exportAlias.width
+                            - 3*exportAlias.anchors.rightMargin
+                        )
+                        elide: Qt.ElideMiddle
+                        text: modelData
+                    }
+
+                    Text {
+                        id: address
+                        anchors {
+                            verticalCenter : parent.verticalCenter
+                            left: parent.left
+                            leftMargin: Style.main.leftMargin
+                        }
+                        font.pointSize :  Style.main.fontSize * Style.pt
+                        color: Style.main.text
+                        text: addressMetrics.elidedText
+                    }
+
+                    // export
+                    ClickIconText {
+                        id: exportAlias
+                        anchors {
+                            verticalCenter: parent.verticalCenter
+                            right: importAlias.left
+                            rightMargin: Style.main.rightMargin
+                        }
+                        text: qsTr("Export", "todo")
+                        iconText: Style.fa.floppy_o
+                        textBold: true
+                        textColor: Style.main.textBlue
+                        onClicked: {
+                            dialogExport.address = listalias[index]
+                            dialogExport.show()
+                        }
+                    }
+
+                    // import
+                    ClickIconText {
+                        id: importAlias
+                        anchors {
+                            verticalCenter: parent.verticalCenter
+                            right: parent.right
+                            rightMargin: Style.main.rightMargin
+                        }
+                        text: qsTr("Import", "todo")
+                        iconText: Style.fa.upload
+                        textBold: true
+                        textColor: enabled ? Style.main.textBlue : Style.main.textDisabled
+                        onClicked: {
+                            dialogImport.address = listalias[index]
+                            dialogImport.show()
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    // line
+    Rectangle {
+        id: line
+        color: Style.accounts.line
+        height: Style.accounts.heightLine
+        width: root.row_width
+    }
+
+
+    states: [
+        State {
+            name: "connected"
+            PropertyChanges {
+                target : addressList
+                model  : listalias
+            }
+            PropertyChanges {
+                target : toggleIcon
+                color  : Style.main.text
+            }
+            PropertyChanges {
+                target : accountName
+                color  : Style.main.text
+            }
+            PropertyChanges {
+                target    : statusMark
+                textColor : Style.main.textGreen
+                text      : qsTr("connected", "status of a listed logged-in account")
+                iconText  : Style.fa.circle
+            }
+            PropertyChanges {
+                target: exportAccount
+                visible: true
+            }
+            PropertyChanges {
+                target : logoutAccount
+                text   : qsTr("Log out", "action to log out a connected account")
+                onClicked : {
+                    mainaccRow.state="collapsed"
+                    dialogGlobal.state = "logout"
+                    dialogGlobal.input = root.iAccount
+                    dialogGlobal.show()
+                    dialogGlobal.confirmed()
+                }
+            }
+        },
+        State {
+            name: "disconnected"
+            PropertyChanges {
+                target : addressList
+                model  : 0
+            }
+            PropertyChanges {
+                target : toggleIcon
+                color  : Style.main.textDisabled
+            }
+            PropertyChanges {
+                target : accountName
+                color  : Style.main.textDisabled
+            }
+            PropertyChanges {
+                target    : statusMark
+                textColor : Style.main.textDisabled
+                text      : qsTr("disconnected", "status of a listed logged-out account")
+                iconText  : Style.fa.circle_o
+            }
+            PropertyChanges {
+                target : logoutAccount
+                text   : qsTr("Log in", "action to log in a disconnected account")
+                onClicked : {
+                    dialogAddUser.username = root.listalias[0]
+                    dialogAddUser.show()
+                    dialogAddUser.inputPassword.focusInput = true
+                }
+            }
+            PropertyChanges {
+                target: exportAccount
+                visible: false
+            }
+        }
+    ]
+}

internal/frontend/qml/ImportExportUI/Credits.qml

@@ -0,0 +1,51 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// credits
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+    Rectangle {
+        anchors.centerIn: parent
+        width: Style.main.width
+        height: root.parent.height - 6*Style.dialog.titleSize
+        color: "transparent"
+
+        ListView {
+            anchors.fill: parent
+            clip: true
+            model: go.credits.split(";")
+
+            delegate: AccessibleText {
+                anchors.horizontalCenter: parent.horizontalCenter
+                text: modelData
+                color: Style.main.text
+                font.pointSize:  Style.main.fontSize * Style.pt
+            }
+
+            footer: ButtonRounded {
+                anchors.horizontalCenter: parent.horizontalCenter
+                text: qsTr("Close", "close window")
+                onClicked: dialogCredits.hide()
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/DateBox.qml

@@ -0,0 +1,220 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for year / month / day
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import QtQml.Models 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+ComboBox {
+    id: root
+
+    property string placeholderText : "none"
+    property var    dropDownStyle   : Style.dropDownLight
+    property real   radius          : Style.dialog.radiusButton
+    property bool   below           : true
+
+    onDownChanged : {
+        root.below = popup.y>0
+    }
+
+
+    font.pointSize : Style.main.fontSize * Style.pt
+
+    spacing : Style.dialog.spacing
+    height  : Style.dialog.heightInput
+    width   : 10*Style.px
+
+    function updateWidth() {
+        // make the width according to localization ( especially for Months)
+        var max = 10*Style.px
+        if (root.model === undefined) return
+        for (var i=-1; i<root.model.length; ++i){
+            metrics.text = i<0 ? root.placeholderText : root.model[i]+"MM" // "M" for extra space
+            max = Math.max(max, metrics.width)
+        }
+        root.width = root.spacing + max + root.spacing + indicatorIcon.width + root.spacing
+        //console.log("width updated", root.placeholderText, root.width)
+    }
+
+    TextMetrics {
+        id: metrics
+        font: root.font
+        text: placeholderText
+    }
+
+
+    indicator: Text {
+        id: indicatorIcon
+        color: root.enabled  ? dropDownStyle.highlight : dropDownStyle.inactive
+        text: root.down ? Style.fa.chevron_up : Style.fa.chevron_down
+        font.family: Style.fontawesome.name
+        anchors {
+            right: parent.right
+            rightMargin: root.spacing
+            verticalCenter: parent.verticalCenter
+        }
+    }
+
+    contentItem: Text {
+        id: boxItem
+        leftPadding: root.spacing
+        rightPadding: root.spacing
+
+        text              : enabled && root.currentIndex>=0 ? root.displayText : placeholderText
+        font              : root.font
+        color             : root.enabled ? dropDownStyle.text : dropDownStyle.inactive
+        verticalAlignment : Text.AlignVCenter
+        elide             : Text.ElideRight
+    }
+
+    background: Rectangle {
+        color: Style.transparent
+
+        MouseArea {
+            anchors.fill: parent
+            onClicked: root.down ?  root.popup.close() : root.popup.open()
+        }
+    }
+
+
+    DelegateModel { // FIXME QML DelegateModel: Error creating delegate
+        id: filteredData
+        model: root.model
+        filterOnGroup: "filtered"
+        groups: DelegateModelGroup {
+            id: filtered
+            name: "filtered"
+            includeByDefault: true
+        }
+        delegate: root.delegate
+    }
+
+    function filterItems(minIndex,maxIndex) {
+        // filter
+        var rowCount = filteredData.items.count
+        if (rowCount<=0) return
+        //console.log(" filter", root.placeholderText, rowCount, minIndex, maxIndex)
+        for (var iItem = 0; iItem < rowCount; iItem++) {
+            var entry = filteredData.items.get(iItem);
+            entry.inFiltered = ( iItem >= minIndex && iItem <= maxIndex )
+            //console.log("     inserted ", iItem, rowCount, entry.model.modelData, entry.inFiltered )
+        }
+    }
+
+    delegate: ItemDelegate {
+        id: thisItem
+        width         : view.width
+        height        : Style.dialog.heightInput
+        leftPadding   : root.spacing
+        rightPadding  : root.spacing
+        topPadding    : 0
+        bottomPadding : 0
+
+        property int index : {
+            //console.log( "index: ", thisItem.DelegateModel.itemsIndex )
+            return thisItem.DelegateModel.itemsIndex
+        }
+
+        onClicked : {
+            //console.log("thisItem click", thisItem.index)
+            root.currentIndex = thisItem.index
+            root.activated(thisItem.index)
+            root.popup.close()
+        }
+
+
+        contentItem: Text {
+            text: modelData
+            color: dropDownStyle.text
+            font: root.font
+            elide: Text.ElideRight
+            verticalAlignment: Text.AlignVCenter
+        }
+
+        background: Rectangle {
+            color: thisItem.hovered ? dropDownStyle.highlight : dropDownStyle.background
+            Text {
+                anchors{
+                    right: parent.right
+                    rightMargin: root.spacing
+                    verticalCenter: parent.verticalCenter
+                }
+                font {
+                    family: Style.fontawesome.name
+                }
+                text: root.currentIndex == thisItem.index ? Style.fa.check : ""
+                color: thisItem.hovered ? dropDownStyle.text : dropDownStyle.highlight
+            }
+
+            Rectangle {
+                anchors {
+                    left: parent.left
+                    right: parent.right
+                    bottom: parent.bottom
+                }
+                height: Style.dialog.borderInput
+                color: dropDownStyle.separator
+            }
+        }
+    }
+
+    popup: Popup {
+        y: root.height
+        x: -background.strokeWidth
+        width: root.width + 2*background.strokeWidth
+        modal: true
+        closePolicy: Popup.CloseOnPressOutside | Popup.CloseOnEscape
+        topPadding: background.radiusTopLeft + 2*background.strokeWidth
+        bottomPadding: background.radiusBottomLeft + 2*background.strokeWidth
+        leftPadding: 2*background.strokeWidth
+        rightPadding: 2*background.strokeWidth
+
+        contentItem: ListView {
+            id: view
+            clip: true
+            implicitHeight: winMain.height/3
+            model: filteredData // if you want to slide down to position: popup.visible ? root.delegateModel : null
+            currentIndex: root.currentIndex
+
+            ScrollIndicator.vertical: ScrollIndicator { }
+        }
+
+        background: RoundedRectangle {
+            radiusTopLeft     : root.below  ?  0 : root.radius
+            radiusBottomLeft  : !root.below ?  0 : root.radius
+            radiusTopRight    : radiusTopLeft
+            radiusBottomRight : radiusBottomLeft
+            fillColor         : dropDownStyle.background
+        }
+    }
+
+    Component.onCompleted: {
+        //console.log(" box ", label)
+        root.updateWidth()
+        root.filterItems(0,model.length-1)
+    }
+
+    onModelChanged :{
+        //console.log("model changed", root.placeholderText)
+        root.updateWidth()
+        root.filterItems(0,model.length-1)
+    }
+}
+

internal/frontend/qml/ImportExportUI/DateInput.qml

@@ -0,0 +1,264 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+
+    width  : row.width + (root.label == "" ? 0 : textlabel.width)
+    height : row.height
+    color  : Style.transparent
+
+    property alias  label        : textlabel.text
+    property string metricsLabel : root.label
+    property var dropDownStyle   : Style.dropDownLight
+
+    // dates
+    property date  currentDate    : new Date()  // default now
+    property date  minDate        : new Date(0) // default epoch start
+    property date  maxDate        : new Date()  // default now
+    property bool  isMaxDateToday : false
+    property int   unix           : Math.floor(currentDate.getTime()/1000)
+
+    onMinDateChanged: {
+        if (isNaN(minDate.getTime()) || minDate.getTime() > maxDate.getTime()) {
+            minDate = new Date(0)
+        }
+        //console.log(" minDate changed:", root.label, minDate.toDateString())
+        updateRange()
+    }
+    onMaxDateChanged: {
+        if (isNaN(maxDate.getTime()) || minDate.getTime() > maxDate.getTime()) {
+            maxDate = new Date()
+        }
+        //console.log(" maxDate changed:", root.label, maxDate.toDateString())
+        updateRange()
+    }
+
+    RoundedRectangle {
+        id: background
+        anchors.fill      : row
+        strokeColor       : dropDownStyle.line
+        strokeWidth       : Style.dialog.borderInput
+        fillColor         : dropDownStyle.background
+        radiusTopLeft     : row.children[0].down                     && !row.children[0].below                     ? 0 : Style.dialog.radiusButton
+        radiusBottomLeft  : row.children[0].down                     && row.children[0].below                      ? 0 : Style.dialog.radiusButton
+        radiusTopRight    : row.children[row.children.length-1].down && !row.children[row.children.length-1].below ? 0 : Style.dialog.radiusButton
+        radiusBottomRight : row.children[row.children.length-1].down && row.children[row.children.length-1].below  ? 0 : Style.dialog.radiusButton
+    }
+
+    TextMetrics {
+        id: textMetrics
+        text: root.metricsLabel+"M"
+        font: textlabel.font
+    }
+
+    Text {
+        id: textlabel
+        anchors {
+            left           : root.left
+            verticalCenter : root.verticalCenter
+        }
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+            bold: dropDownStyle.labelBold
+        }
+        color: dropDownStyle.text
+        width: textMetrics.width
+        verticalAlignment: Text.AlignVCenter
+    }
+
+    Row {
+        id: row
+
+        anchors {
+            left   : root.label=="" ? root.left : textlabel.right
+            bottom : root.bottom
+        }
+        padding   : Style.dialog.borderInput
+
+        DateBox {
+            id: monthInput
+            placeholderText: qsTr("Month")
+            enabled: !allDates
+            model: gui.allMonths
+            onActivated: updateRange()
+            anchors.verticalCenter: parent.verticalCenter
+            dropDownStyle: root.dropDownStyle
+            onDownChanged: {
+                if (root.isMaxDateToday){
+                    root.maxDate = new Date()
+                }
+            }
+        }
+
+        Rectangle {
+            width: Style.dialog.borderInput
+            height: monthInput.height
+            color: dropDownStyle.line
+            anchors.verticalCenter: parent.verticalCenter
+        }
+
+        DateBox {
+            id: dayInput
+            placeholderText: qsTr("Day")
+            enabled: !allDates
+            model: gui.allDays
+            onActivated: updateRange()
+            anchors.verticalCenter: parent.verticalCenter
+            dropDownStyle: root.dropDownStyle
+            onDownChanged: {
+                if (root.isMaxDateToday){
+                    root.maxDate = new Date()
+                }
+            }
+        }
+
+        Rectangle {
+            width: Style.dialog.borderInput
+            height: monthInput.height
+            color: dropDownStyle.line
+        }
+
+        DateBox {
+            id: yearInput
+            placeholderText: qsTr("Year")
+            enabled: !allDates
+            model: gui.allYears
+            onActivated: updateRange()
+            anchors.verticalCenter: parent.verticalCenter
+            dropDownStyle: root.dropDownStyle
+            onDownChanged: {
+                if (root.isMaxDateToday){
+                    root.maxDate = new Date()
+                }
+            }
+        }
+    }
+
+
+    function setDate(d) {
+        //console.trace()
+        //console.log( "    setDate ", label, d)
+        if (isNaN(d = parseInt(d))) return
+        var newUnix = Math.min(maxDate.getTime(), d*1000) // seconds to ms
+        newUnix = Math.max(minDate.getTime(), newUnix)
+        root.updateRange(new Date(newUnix))
+        //console.log( "        set ", currentDate.getTime())
+    }
+
+
+    function updateRange(curr) {
+        if (curr === undefined || isNaN(curr.getTime())) curr = root.getCurrentDate()
+        //console.log( "    update", label, curr, curr.getTime())
+        //console.trace()
+        if (isNaN(curr.getTime())) return // shouldn't happen
+        // full system date range
+        var firstYear = parseInt(gui.allYears[0])
+        var firstDay = parseInt(gui.allDays[0])
+        if ( isNaN(firstYear) || isNaN(firstDay) ) return
+        // get minimal and maximal available year, month, day
+        // NOTE: The order is important!!!
+        var minYear  = minDate.getFullYear()
+        var maxYear  = maxDate.getFullYear()
+        var minMonth = (curr.getFullYear() == minYear  ? minDate.getMonth() : 0  )
+        var maxMonth = (curr.getFullYear() == maxYear  ? maxDate.getMonth() : 11 )
+        var minDay   = (
+            curr.getFullYear() == minYear  &&
+            curr.getMonth()    == minMonth ?
+            minDate.getDate() : firstDay
+        )
+        var maxDay   = (
+            curr.getFullYear() == maxYear  &&
+            curr.getMonth()    == maxMonth ?
+            maxDate.getDate() : gui.daysInMonth(curr.getFullYear(), curr.getMonth()+1)
+        )
+
+        //console.log("update ranges: ", root.label, minYear, maxYear, minMonth+1, maxMonth+1, minDay, maxDay)
+        //console.log("update indexes: ", root.label, firstYear-minYear, firstYear-maxYear, minMonth, maxMonth, minDay-firstDay, maxDay-firstDay)
+
+
+        yearInput.filterItems(firstYear-maxYear, firstYear-minYear)
+        monthInput.filterItems(minMonth,maxMonth) // getMonth() is index not a month (i.e. Jan==0)
+        dayInput.filterItems(minDay-1,maxDay-1)
+
+        // keep ordering from model not from filter
+        yearInput  .currentIndex = firstYear - curr.getFullYear()
+        monthInput .currentIndex = curr.getMonth() // getMonth() is index not a month (i.e. Jan==0)
+        dayInput   .currentIndex = curr.getDate()-firstDay
+
+        /*
+         console.log(
+             "update current indexes: ", root.label,
+             curr.getFullYear() , '->' , yearInput.currentIndex  ,
+             gui.allMonths[curr.getMonth()]    , '->' , monthInput.currentIndex ,
+             curr.getDate()     , '->' , dayInput.currentIndex
+         )
+         */
+
+        // test if current date changed
+        if (
+            yearInput.currentText  == root.currentDate.getFullYear()                      &&
+            monthInput.currentText == root.currentDate.toLocaleString(gui.locale, "MMM") &&
+            dayInput.currentText   == gui.prependZeros(root.currentDate.getDate(),2)
+        ) {
+            //console.log(" currentDate NOT changed", label, root.currentDate.toDateString())
+            return
+        }
+
+        root.currentDate = root.getCurrentDate()
+        // console.log(" currentDate changed", label, root.currentDate.toDateString())
+    }
+
+    // get current date from selected
+    function getCurrentDate() {
+        if (isNaN(root.currentDate.getTime())) { // wrong current ?
+            console.log("!WARNING! Wrong current date format", root.currentDate)
+            root.currentDate = new Date(0)
+        }
+        var currentString = ""
+        var currentUnix = root.currentDate.getTime()
+        if (
+            yearInput.currentText  != ""                         &&
+            yearInput.currentText  != yearInput.placeholderText  &&
+            monthInput.currentText != ""                         &&
+            monthInput.currentText != monthInput.placeholderText
+        ) {
+            var day = gui.daysInMonth(yearInput.currentText, monthInput.currentText)
+            if (!isNaN(parseInt(dayInput.currentText))) {
+                day = Math.min(day, parseInt(dayInput.currentText))
+            }
+            var month = gui.allMonths.indexOf(monthInput.currentText)
+            var year = parseInt(yearInput.currentText)
+            var pickedDate = new Date(year, month, day)
+            // Compensate automatic DST in windows
+            if (pickedDate.getDate() != day) {
+                pickedDate.setTime(pickedDate.getTime() + 60*60*1000) // add hour
+            }
+            currentUnix = pickedDate.getTime()
+        }
+        return new Date(Math.max(
+            minDate.getTime(),
+            Math.min(maxDate.getTime(), currentUnix)
+        ))
+    }
+}

internal/frontend/qml/ImportExportUI/DateRange.qml

@@ -0,0 +1,123 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Column {
+    id: dateRange
+
+    property var   structure : transferRules
+    property string sourceID : "-1"
+
+    property alias allDates      : allDatesBox.checked
+    property alias inputDateFrom : inputDateFrom
+    property alias inputDateTo   : inputDateTo
+
+    function getRange() {common.getRange()}
+    function setRangeFromTo(from, to) {common.setRangeFromTo(from, to)}
+    function applyRange() {common.applyRange()}
+
+    property var dropDownStyle : Style.dropDownLight
+    property var isDark : dropDownStyle.background == Style.dropDownDark.background
+
+    spacing: Style.dialog.spacing
+
+    DateRangeFunctions {id:common}
+
+    DateInput {
+        id: inputDateFrom
+        label: qsTr("From:")
+        currentDate: gui.netBday
+        maxDate: inputDateTo.currentDate
+        dropDownStyle: dateRange.dropDownStyle
+    }
+
+    Rectangle {
+        width: inputDateTo.width
+        height: Style.dialog.borderInput / 2
+        color: isDark ? dropDownStyle.separator : Style.transparent
+    }
+
+    DateInput {
+        id: inputDateTo
+        label: qsTr("To:")
+        metricsLabel: inputDateFrom.label
+        currentDate: new Date() // now
+        minDate: inputDateFrom.currentDate
+        isMaxDateToday: true
+        dropDownStyle: dateRange.dropDownStyle
+    }
+
+    Rectangle {
+        width: inputDateTo.width
+        height: Style.dialog.borderInput
+        color: isDark ? dropDownStyle.separator : Style.transparent
+    }
+
+    CheckBoxLabel {
+        id: allDatesBox
+        text            : qsTr("All dates")
+        anchors.right   : inputDateTo.right
+        checkedSymbol   : Style.fa.toggle_on
+        uncheckedSymbol : Style.fa.toggle_off
+        uncheckedColor  : Style.main.textDisabled
+        textColor       : dropDownStyle.text
+        symbolPointSize : Style.dialog.iconSize * Style.pt * 1.1
+        spacing         : Style.dialog.spacing*2
+
+        TextMetrics {
+            id: metrics
+            text: allDatesBox.checkedSymbol
+            font {
+                family: Style.fontawesome.name
+                pointSize: allDatesBox.symbolPointSize
+            }
+        }
+
+        Rectangle {
+            color: allDatesBox.checked ? dotBackground.color : Style.exporting.sliderBackground
+            width: metrics.width*0.9
+            height: metrics.height*0.6
+            radius: height/2
+            z: -1
+
+            anchors {
+                left: allDatesBox.left
+                verticalCenter: allDatesBox.verticalCenter
+                leftMargin: 0.05 * metrics.width
+            }
+
+            Rectangle {
+                id: dotBackground
+                color  : Style.exporting.background
+                height : parent.height
+                width  : height
+                radius : height/2
+                anchors {
+                    left           : parent.left
+                    verticalCenter : parent.verticalCenter
+                }
+
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/DateRangeFunctions.qml

@@ -0,0 +1,81 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+    /*
+     NOTE: need to be in obejct with
+     id: dateRange
+
+     property var   structure : structureExternal
+     property string sourceID : structureExternal.getID ( -1 )
+
+     property alias allDates      : allDatesBox.checked
+     property alias inputDateFrom : inputDateFrom
+     property alias inputDateTo   : inputDateTo
+
+     function getRange() {common.getRange()}
+     function applyRange() {common.applyRange()}
+     */
+
+    function resetRange() {
+        inputDateFrom.setDate(gui.netBday.getTime())
+        inputDateTo.setDate((new Date()).getTime())
+    }
+
+    function setRangeFromTo(folderFrom, folderTo){ // unix time in seconds
+        if ( folderFrom == 0 && folderTo ==0 ) {
+            dateRange.allDates = true
+        } else {
+            dateRange.allDates = false
+            inputDateFrom.setDate(folderFrom)
+            inputDateTo.setDate(folderTo)
+        }
+    }
+
+    function getRange(){ // unix time in seconds
+        //console.log(" ==== GET RANGE === ")
+        //console.trace()
+        var folderFrom = dateRange.structure.globalFromDate
+        var folderTo = dateRange.structure.globalToDate
+
+        root.setRangeFromTo(folderFrom, folderTo)
+    }
+
+    function applyRange(){ // unix time is seconds
+        if (dateRange.allDates)  structure.setFromToDate(dateRange.sourceID, 0, 0)
+        else {
+            var endOfDay = new Date(inputDateTo.unix*1000)
+            endOfDay.setHours(23,59,59,999)
+            var endOfDayUnix = parseInt(endOfDay.getTime()/1000)
+            structure.setFromToDate(dateRange.sourceID, inputDateFrom.unix, endOfDayUnix)
+        }
+    }
+
+    Component.onCompleted: {
+        inputDateFrom.updateRange(gui.netBday)
+        inputDateTo.updateRange(new Date())
+        //getRange()
+    }
+}
+

internal/frontend/qml/ImportExportUI/DateRangeMenu.qml

@@ -0,0 +1,163 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Rectangle {
+    id:root
+
+    width  : icon.width + indicator.width + 3*padding
+    height : icon.height + 3*padding
+
+    property real padding : Style.dialog.spacing
+    property bool down    : popup.visible
+
+    property var  structure   : transferRules
+    property string  sourceID : ""
+    property int  sourceFromDate : 0
+    property int  sourceToDate : 0
+
+    color: Style.transparent
+
+    RoundedRectangle {
+        anchors.fill: parent
+        radiusTopLeft: root.down ? 0 : Style.dialog.radiusButton
+        fillColor: root.down ? Style.main.textBlue : Style.transparent
+    }
+
+    Text {
+        id: icon
+        text: Style.fa.calendar_o
+        anchors {
+            left           : parent.left
+            leftMargin     : root.padding
+            verticalCenter : parent.verticalCenter
+        }
+
+        color: root.enabled ? (
+            root.down ? Style.main.background : Style.main.text
+        ) : Style.main.textDisabled
+
+        font.family : Style.fontawesome.name
+
+        Text {
+            anchors {
+                verticalCenter: parent.bottom
+                horizontalCenter: parent.right
+            }
+
+            color          : !root.down && root.enabled ? Style.main.textRed : icon.color
+            text           : Style.fa.exclamation_circle
+            visible        : !dateRangeInput.allDates
+            font.pointSize : root.padding * Style.pt * 1.5
+            font.family    : Style.fontawesome.name
+        }
+    }
+
+
+    Text {
+        id: indicator
+        anchors {
+            right          : parent.right
+            rightMargin    : root.padding
+            verticalCenter : parent.verticalCenter
+        }
+
+        text  : root.down ? Style.fa.chevron_up : Style.fa.chevron_down
+        color : !root.down && root.enabled ? Style.main.textBlue : icon.color
+        font.family : Style.fontawesome.name
+    }
+
+    MouseArea {
+        anchors.fill: root
+        onClicked: {
+            popup.open()
+        }
+    }
+
+    Popup {
+        id: popup
+
+        x      : -width
+        modal  : true
+        clip   : true
+
+        topPadding : 0
+
+        background: RoundedRectangle {
+            fillColor   : Style.bubble.paneBackground
+            strokeColor : fillColor
+            radiusTopRight: 0
+
+            RoundedRectangle {
+                anchors {
+                    left: parent.left
+                    right: parent.right
+                    top: parent.top
+                }
+                height: Style.dialog.heightInput
+                fillColor: Style.dropDownDark.highlight
+                strokeColor: fillColor
+                radiusTopRight: 0
+                radiusBottomLeft: 0
+                radiusBottomRight: 0
+            }
+        }
+
+        contentItem : Column {
+            spacing: Style.dialog.spacing
+
+            Text {
+                anchors {
+                    left: parent.left
+                }
+
+                text              : qsTr("Import date range")
+                font.bold         : Style.dropDownDark.labelBold
+                color             : Style.dropDownDark.text
+                height            : Style.dialog.heightInput
+                verticalAlignment : Text.AlignVCenter
+            }
+
+            DateRange {
+                id: dateRangeInput
+                allDates: true
+                structure: root.structure
+                sourceID: root.sourceID
+                dropDownStyle: Style.dropDownDark
+            }
+        }
+
+        onAboutToShow : updateRange()
+        onAboutToHide : dateRangeInput.applyRange()
+    }
+
+    function updateRange() {
+        dateRangeInput.setRangeFromTo(root.sourceFromDate, root.sourceToDate)
+    }
+
+    Connections {
+        target:root
+        onSourceFromDateChanged: root.updateRange()
+        onSourceToDateChanged: root.updateRange()
+    }
+}

internal/frontend/qml/ImportExportUI/DialogExport.qml

@@ -0,0 +1,457 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Export dialog
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+// TODO
+//  - make ErrorDialog module
+//  - map decision to error code : ask (default), skip ()
+//  - what happens when import fails ? heuristic to find mail where to start from
+
+Dialog {
+    id: root
+
+    enum Page {
+        LoadingStructure = 0, Options, Progress
+    }
+
+    title : set_title()
+
+    property string address
+    property alias finish: finish
+
+    property string msgClearUnfished: qsTr ("Remove already exported files.")
+
+    isDialogBusy : true // currentIndex == 0 ||  currentIndex == 3 
+
+    signal cancel()
+    signal okay()
+
+
+    Rectangle { // 0
+        id: dialogLoading
+        width: root.width
+        height: root.height
+        color: Style.transparent
+
+        Text {
+            anchors.centerIn : dialogLoading
+            font.pointSize: Style.dialog.titleSize * Style.pt
+            color: Style.dialog.text
+            horizontalAlignment: Text.AlignHCenter
+            text: qsTr("Loading folders and labels for", "todo") +"\n" + address
+        }
+    }
+
+    Rectangle { // 1
+        id: dialogInput
+        width: root.width
+        height: root.height
+        color: Style.transparent
+
+        Row {
+            id: inputRow
+            anchors {
+                topMargin        : root.titleHeight
+                top              : parent.top
+                horizontalCenter : parent.horizontalCenter
+            }
+            spacing: 3*Style.main.leftMargin
+            property real columnWidth  : (root.width - Style.main.leftMargin - inputRow.spacing - Style.main.rightMargin) / 2
+            property real columnHeight :  root.height  - root.titleHeight - Style.main.leftMargin
+
+
+            ExportStructure {
+                id: sourceFoldersInput
+                width  : inputRow.columnWidth
+                height : inputRow.columnHeight
+                title  : qsTr("From: %1", "todo").arg(address)
+            }
+
+            Column {
+                spacing: (inputRow.columnHeight - dateRangeInput.height - outputFormatInput.height - outputPathInput.height - buttonRow.height -  infotipEncrypted.height) / 4
+
+                DateRange{
+                    id: dateRangeInput
+                }
+
+                OutputFormat {
+                    id: outputFormatInput
+                }
+
+                Row {
+                    spacing: Style.dialog.spacing
+                    CheckBoxLabel {
+                        id: exportEncrypted
+                        text: qsTr("Export emails that cannot be decrypted as ciphertext")
+                        anchors {
+                            bottom: parent.bottom
+                            bottomMargin: Style.dialog.fontSize/1.8
+                        }
+                    }
+
+                    InfoToolTip {
+                        id: infotipEncrypted
+                        anchors {
+                            verticalCenter: exportEncrypted.verticalCenter
+                        }
+                        info: qsTr("Checking this option will export all emails that cannot be decrypted in ciphertext. If this option is not checked, these emails will not be exported", "todo")
+                    }
+                }
+
+                FileAndFolderSelect {
+                    id: outputPathInput
+                    title: qsTr("Select location of export:", "todo")
+                    width  : inputRow.columnWidth // stretch folder input
+                }
+
+                Row {
+                    id: buttonRow
+                    anchors.right : parent.right
+                    spacing       : Style.dialog.rightMargin
+
+                    ButtonRounded {
+                        id:buttonCancel
+                        fa_icon: Style.fa.times
+                        text: qsTr("Cancel")
+                        color_main: Style.main.textBlue
+                        onClicked : root.cancel()
+                    }
+
+                    ButtonRounded {
+                        id: buttonNext
+                        fa_icon: Style.fa.check
+                        text: qsTr("Export","todo")
+                        enabled: transferRules != 0
+                        color_main: Style.dialog.background
+                        color_minor: enabled ? Style.dialog.textBlue : Style.main.textDisabled
+                        isOpaque: true
+                        onClicked : root.okay()
+                    }
+                }
+            }
+        }
+    }
+
+    Rectangle { // 2
+        id: progressStatus
+        width: root.width
+        height: root.height
+        color: "transparent"
+
+        Row {
+            anchors {
+                bottom: progressbarExport.top
+                bottomMargin: Style.dialog.heightSeparator
+                left: progressbarExport.left
+            }
+            spacing: Style.main.rightMargin
+            AccessibleText {
+                id: statusLabel
+                text : qsTr("Status:")
+                font.pointSize: Style.main.iconSize * Style.pt
+                color : Style.main.text
+            }
+            AccessibleText {
+                anchors.baseline: statusLabel.baseline
+                text :  {
+                    if (progressbarExport.isFinished) return qsTr("finished")
+                    if (go.progressDescription == "") return qsTr("exporting")
+                    return go.progressDescription
+                }
+                elide: Text.ElideMiddle
+                width: progressbarExport.width - parent.spacing - statusLabel.width
+                font.pointSize: Style.dialog.textSize * Style.pt
+                color : Style.main.textDisabled
+            }
+        }
+
+        ProgressBar {
+            id: progressbarExport
+            implicitWidth  : 2*progressStatus.width/3
+            implicitHeight : Style.exporting.rowHeight
+            value: go.progress
+            property int current:  go.total * go.progress
+            property bool isFinished:  finishedPartBar.width == progressbarExport.width
+            anchors {
+                centerIn: parent
+            }
+            background: Rectangle {
+                radius         : Style.exporting.boxRadius
+                color          : Style.exporting.progressBackground
+            }
+            contentItem: Item {
+                Rectangle {
+                    id: finishedPartBar
+                    width  : parent.width * progressbarExport.visualPosition
+                    height : parent.height
+                    radius : Style.exporting.boxRadius
+                    gradient  : Gradient {
+                        GradientStop { position: 0.00; color: Qt.lighter(Style.exporting.progressStatus,1.1) }
+                        GradientStop { position: 0.66; color: Style.exporting.progressStatus }
+                        GradientStop { position: 1.00; color: Qt.darker(Style.exporting.progressStatus,1.1) }
+                    }
+
+                    Behavior on width {
+                        NumberAnimation { duration:800;  easing.type: Easing.InOutQuad }
+                    }
+                }
+                Text {
+                    anchors.centerIn: parent
+                    text: {
+                        if (progressbarExport.isFinished) return qsTr("Export finished","todo")
+                        if (
+                            go.progressDescription == gui.enums.progressInit || 
+                            (go.progress==0 && go.description=="")
+                        ) {
+                            if (go.total>1) return qsTr("Estimating the total number of messages (%1)","todo").arg(go.total)
+                            else return qsTr("Estimating the total number of messages","todo")
+                        } 
+                        var msg = qsTr("Exporting message %1 of %2 (%3%)","todo")
+                        if (pauseButton.paused) msg = qsTr("Exporting paused at message %1 of %2 (%3%)","todo")
+                        return msg.arg(progressbarExport.current).arg(go.total).arg(Math.floor(go.progress*100))
+                    }
+                    color: Style.main.background
+                    font {
+                        pointSize: Style.dialog.fontSize * Style.pt
+                    }
+                }
+            }
+        }
+
+        Row {
+            anchors {
+                top: progressbarExport.bottom
+                topMargin : Style.dialog.heightSeparator
+                horizontalCenter: parent.horizontalCenter
+            }
+            spacing: Style.dialog.rightMargin
+
+            ButtonRounded {
+                id: pauseButton
+                property bool paused : false
+                fa_icon    : paused ? Style.fa.play : Style.fa.pause
+                text       : paused ? qsTr("Resume") : qsTr("Pause")
+                color_main : Style.dialog.textBlue
+                onClicked  : {
+                    if (paused) {
+                        if (winMain.updateState == gui.enums.statusNoInternet) {
+                            go.notifyError(gui.enums.errNoInternet)
+                            return
+                        }
+                        go.resumeProcess()
+                    } else {
+                        go.pauseProcess()
+                    }
+                    paused = !paused
+                    pauseButton.focus=false
+                }
+                visible    : !progressbarExport.isFinished
+            }
+
+            ButtonRounded {
+                fa_icon    : Style.fa.times
+                text       : qsTr("Cancel")
+                color_main : Style.dialog.textBlue
+                visible    : !progressbarExport.isFinished
+                onClicked  : root.ask_cancel_progress()
+            }
+
+            ButtonRounded {
+                id: finish
+                fa_icon     : Style.fa.check
+                text        : qsTr("Okay","todo")
+                color_main  : Style.dialog.background
+                color_minor : Style.dialog.textBlue
+                isOpaque    : true
+                visible     : progressbarExport.isFinished
+                onClicked   : root.okay()
+            }
+        }
+
+        ClickIconText {
+            id: buttonHelp
+            anchors {
+                right        : parent.right
+                bottom       : parent.bottom
+                rightMargin  : Style.main.rightMargin
+                bottomMargin : Style.main.rightMargin
+            }
+            textColor  : Style.main.textDisabled
+            iconText   : Style.fa.question_circle
+            text       : qsTr("Help", "directs the user to the online user guide")
+            textBold   : true
+            onClicked  : Qt.openUrlExternally("https://protonmail.com/support/categories/import-export/")
+        }
+    }
+
+    PopupMessage {
+        id: errorPopup
+        width: root.width
+        height: root.height
+    }
+
+    function check_inputs() {
+        if (currentIndex == 1) {
+            // at least one email to export
+            if (transferRules.rowCount() == 0){
+                errorPopup.show(qsTr("No emails found to export. Please try another address.", "todo"))
+                return false
+            }
+            // at least one source selected
+            /*
+             if (!transferRules.atLeastOneSelected) {
+                 errorPopup.show(qsTr("Please select at least one item to export.", "todo"))
+                 return false
+             }
+             */
+            // check path
+            var folderCheck = go.checkPathStatus(outputPathInput.path)
+            switch (folderCheck) {
+                case gui.enums.pathEmptyPath:
+                errorPopup.show(qsTr("Missing export path. Please select an output folder."))
+                break;
+                case gui.enums.pathWrongPath:
+                errorPopup.show(qsTr("Folder '%1' not found. Please select an output folder.").arg(outputPathInput.path))
+                break;
+                case gui.enums.pathOK | gui.enums.pathNotADir:
+                errorPopup.show(qsTr("File '%1' is not a folder. Please select an output folder.").arg(outputPathInput.path))
+                break;
+                case gui.enums.pathWrongPermissions:
+                errorPopup.show(qsTr("Cannot access folder '%1'. Please check folder permissions.").arg(outputPathInput.path))
+                break;
+            }
+            if (
+                (folderCheck&gui.enums.pathOK)==0 ||
+                (folderCheck&gui.enums.pathNotADir)==gui.enums.pathNotADir
+            ) return false
+            if (winMain.updateState == gui.enums.statusNoInternet) {
+                errorPopup.show(qsTr("Please check your internet connection."))
+                return false
+            }
+        }
+        return true
+    }
+
+    function set_title() {
+        switch(root.currentIndex){
+            case 1 : return qsTr("Select what you'd like to export:")
+            default: return ""
+        }
+    }
+
+    function clear_status() {
+        go.progress=0.0
+        go.total=0.0
+        go.progressDescription=gui.enums.progressInit
+    }
+
+    function ask_cancel_progress(){
+        errorPopup.buttonYes.visible = true
+        errorPopup.buttonNo.visible = true
+        errorPopup.buttonOkay.visible = false
+        errorPopup.show ("Are you sure you want to cancel this export?")
+    }
+
+
+    onCancel : {
+        switch (root.currentIndex) {
+            case 0 :
+            case 1 : root.hide(); break;
+            case 2 : // progress bar 
+            go.cancelProcess();
+            // no break
+            default:
+            root.clear_status()
+            root.currentIndex=1
+        }
+    }
+
+    onOkay : {
+        var isOK = check_inputs()
+        if (!isOK) return
+        timer.interval= currentIndex==1 ? 1 : 300
+        switch (root.currentIndex) {
+            case 2: // progress
+            root.clear_status()
+            root.hide()
+            break
+            case 0: // loading structure
+            dateRangeInput.getRange()
+            //no break
+            default:
+            incrementCurrentIndex()
+            timer.start()
+        }
+    }
+
+    onShow: {
+        if (winMain.updateState==gui.enums.statusNoInternet) {
+            go.checkInternet()
+            if (winMain.updateState==gui.enums.statusNoInternet) {
+                go.notifyError(gui.enums.errNoInternet)
+                root.hide()
+                return
+            }
+        }
+
+        root.clear_status()
+        root.currentIndex=0
+        timer.interval = 300
+        timer.start()
+        dateRangeInput.allDates = true
+    }
+
+    Connections {
+        target: timer
+        onTriggered : {
+            switch (currentIndex) {
+                case 0:
+                go.loadStructureForExport(root.address)
+                sourceFoldersInput.hasItems = (transferRules.rowCount() > 0)
+                break
+                case 2:
+                dateRangeInput.applyRange()
+                go.startExport(
+                    outputPathInput.path,
+                    root.address,
+                    outputFormatInput.checkedText,
+                    exportEncrypted.checked
+                )
+                break
+            }
+        }
+    }
+
+    Connections {
+        target: errorPopup
+
+        onClickedOkay  : errorPopup.hide()
+        onClickedYes : {
+            root.cancel()
+            errorPopup.hide()
+        }
+        onClickedNo  : {
+            go.resumeProcess()
+            errorPopup.hide()
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/DialogYesNo.qml

@@ -0,0 +1,354 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Dialog with Yes/No buttons
+
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Dialog {
+    id: root
+
+    title : ""
+
+    property string input
+
+    property alias question  : msg.text
+    property alias note      : noteText.text
+    property alias answer    : answ.text
+    property alias buttonYes : buttonYes
+    property alias buttonNo  : buttonNo
+
+    isDialogBusy: currentIndex==1
+
+    signal confirmed()
+
+    Column {
+        id: dialogMessage
+        property int heightInputs : msg.height+
+        middleSep.height+
+        buttonRow.height +
+        (checkboxSep.visible ? checkboxSep.height : 0 ) +
+        (noteSep.visible ? noteSep.height : 0 ) +
+        (checkBoxWrapper.visible ? checkBoxWrapper.height : 0 ) +
+        (root.note!="" ? noteText.height : 0 )
+
+        Rectangle { color : "transparent"; width : Style.main.dummy; height : (root.height-dialogMessage.heightInputs)/2 }
+
+        AccessibleText {
+            id:noteText
+            anchors.horizontalCenter: parent.horizontalCenter
+            color: Style.dialog.text
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+                bold: false
+            }
+            width: 2*root.width/3
+            horizontalAlignment: Text.AlignHCenter
+            wrapMode: Text.Wrap
+        }
+        Rectangle { id: noteSep; visible: note!=""; color : "transparent"; width : Style.main.dummy; height : Style.dialog.heightSeparator}
+
+        AccessibleText {
+            id: msg
+            anchors.horizontalCenter: parent.horizontalCenter
+            color: Style.dialog.text
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+                bold: true
+            }
+            width: 2*parent.width/3
+            text : ""
+            horizontalAlignment: Text.AlignHCenter
+            wrapMode: Text.Wrap
+        }
+
+        Rectangle { id: checkboxSep; visible: checkBoxWrapper.visible; color : "transparent"; width : Style.main.dummy; height : Style.dialog.heightSeparator}
+        Row {
+            id: checkBoxWrapper
+            property bool isChecked : false
+            visible: root.state=="deleteUser"
+            anchors.horizontalCenter: parent.horizontalCenter
+            spacing: Style.dialog.spacing
+
+            function toggle() {
+                checkBoxWrapper.isChecked = !checkBoxWrapper.isChecked
+            }
+
+            Text {
+                id: checkbox
+                font {
+                    pointSize : Style.dialog.iconSize * Style.pt
+                    family    : Style.fontawesome.name
+                }
+                anchors.verticalCenter : parent.verticalCenter
+                text: checkBoxWrapper.isChecked ? Style.fa.check_square_o : Style.fa.square_o
+                color: checkBoxWrapper.isChecked ? Style.main.textBlue : Style.main.text
+
+                MouseArea {
+                    anchors.fill: parent
+                    onPressed: checkBoxWrapper.toggle()
+                    cursorShape: Qt.PointingHandCursor
+                }
+            }
+            Text {
+                id: checkBoxNote
+                anchors.verticalCenter : parent.verticalCenter
+                text: qsTr("Additionally delete all stored preferences and data", "when removing an account, this extra preference additionally deletes all cached data")
+                color: Style.main.text
+                font.pointSize: Style.dialog.fontSize * Style.pt
+
+                MouseArea {
+                    anchors.fill: parent
+                    onPressed: checkBoxWrapper.toggle()
+                    cursorShape: Qt.PointingHandCursor
+
+                    Accessible.role: Accessible.CheckBox
+                    Accessible.checked: checkBoxWrapper.isChecked
+                    Accessible.name: checkBoxNote.text
+                    Accessible.description: checkBoxNote.text
+                    Accessible.ignored: checkBoxNote.text == ""
+                    Accessible.onToggleAction: checkBoxWrapper.toggle()
+                    Accessible.onPressAction: checkBoxWrapper.toggle()
+                }
+            }
+        }
+
+        Rectangle { id: middleSep; color : "transparent"; width : Style.main.dummy; height : 2*Style.dialog.heightSeparator }
+
+        Row {
+            id: buttonRow
+            anchors.horizontalCenter: parent.horizontalCenter
+            spacing: Style.dialog.spacing
+            ButtonRounded {
+                id:buttonNo
+                color_main : Style.dialog.textBlue
+                fa_icon    : Style.fa.times
+                text       : qsTr("No")
+                onClicked  : root.hide()
+            }
+            ButtonRounded {
+                id: buttonYes
+                color_main  : Style.dialog.background
+                color_minor : Style.dialog.textBlue
+                isOpaque    : true
+                fa_icon     : Style.fa.check
+                text        : qsTr("Yes")
+                onClicked : {
+                    currentIndex=1
+                    root.confirmed()
+                }
+            }
+        }
+    }
+
+
+    Column {
+        Rectangle { color  : "transparent";  width  : Style.main.dummy; height : (root.height-answ.height)/2 }
+        AccessibleText {
+            id: answ
+            anchors.horizontalCenter: parent.horizontalCenter
+            color: Style.dialog.text
+            font {
+                pointSize : Style.dialog.fontSize * Style.pt
+                bold      : true
+            }
+            width: 3*parent.width/4
+            horizontalAlignment: Text.AlignHCenter
+            text : qsTr("Waiting...", "in general this displays between screens when processing data takes a long time")
+            wrapMode: Text.Wrap
+        }
+    }
+
+
+    states : [
+        State {
+            name: "quit"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : qsTr("Close ImportExport", "quits the application")
+                question     : qsTr("Are you sure you want to close the ImportExport?", "asked when user tries to quit the application")
+                note         : ""
+                answer       : qsTr("Closing ImportExport...", "displayed when user is quitting application")
+            }
+        },
+        State {
+            name: "logout"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                title        : qsTr("Logout", "title of page that displays during account logout")
+                question     : ""
+                note         : ""
+                answer       : qsTr("Logging out...", "displays during account logout")
+            }
+        },
+        State {
+            name: "deleteUser"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : qsTr("Delete account", "title of page that displays during account deletion")
+                question     : qsTr("Are you sure you want to remove this account?", "displays during account deletion")
+                note         : ""
+                answer       : qsTr("Deleting ...", "displays during account deletion")
+            }
+        },
+        State {
+            name: "clearChain"
+            PropertyChanges {
+                target       : root
+                currentIndex : 0
+                title        : qsTr("Clear keychain", "title of page that displays during keychain clearing")
+                question     : qsTr("Are you sure you want to clear your keychain?", "displays during keychain clearing")
+                note         : qsTr("This will remove all accounts that you have added to the Import-Export app.", "displays during keychain clearing")
+                answer       : qsTr("Clearing the keychain ...", "displays during keychain clearing")
+            }
+        },
+        State {
+            name: "clearCache"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : qsTr("Clear cache", "title of page that displays during cache clearing")
+                question     : qsTr("Are you sure you want to clear your local cache?", "displays during cache clearing")
+                note         : qsTr("This will delete all of your stored preferences.", "displays during cache clearing")
+                answer       : qsTr("Clearing the cache ...", "displays during cache clearing")
+            }
+        },
+        State {
+            name: "checkUpdates"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                title        : ""
+                question     : ""
+                note         : ""
+                answer       : qsTr("Checking for updates ...", "displays if user clicks the Check for Updates button in the Help tab")
+            }
+        },
+        State {
+            name: "internetCheck"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                title        : ""
+                question     : ""
+                note         : ""
+                answer       : qsTr("Contacting server...", "displays if user clicks the Check for Updates button in the Help tab")
+            }
+        },
+        State {
+            name: "addressmode"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : ""
+                question     : qsTr("Do you want to continue?", "asked when the user changes between split and combined address mode")
+                note         : qsTr("Changing between split and combined address mode will require you to delete your account(s) from your email client and begin the setup process from scratch.", "displayed when the user changes between split and combined address mode")
+                answer       : qsTr("Configuring address mode for ", "displayed when the user changes between split and combined address mode") + root.input
+            }
+        },
+        State {
+            name: "toggleAutoStart"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                question     : ""
+                note         : ""
+                title        : ""
+                answer       : {
+                    var msgTurnOn = qsTr("Turning on automatic start of ImportExport...", "when the automatic start feature is selected")
+                    var msgTurnOff = qsTr("Turning off automatic start of ImportExport...", "when the automatic start feature is deselected")
+                    return go.isAutoStart==0 ? msgTurnOff  :  msgTurnOn
+                }
+            }
+        },
+        State {
+            name: "undef";
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                question     : ""
+                note         : ""
+                title        : ""
+                answer       : ""
+            }
+        }
+    ]
+
+
+    Shortcut {
+        sequence: StandardKey.Cancel
+        onActivated: root.hide()
+    }
+
+    Shortcut {
+        sequence: "Enter"
+        onActivated: root.confirmed()
+    }
+
+    onHide: {
+        checkBoxWrapper.isChecked = false
+        state = "undef"
+    }
+
+    onShow: {
+        // hide all other dialogs
+        winMain.dialogAddUser     .visible = false
+        winMain.dialogCredits     .visible = false
+        //winMain.dialogVersionInfo .visible = false
+        // dialogFirstStart should reappear again after closing global
+        root.visible = true
+    }
+
+
+
+    onConfirmed : {
+        if (state == "quit" || state == "instance exists" ) {
+            timer.interval = 1000
+        } else {
+            timer.interval = 300
+        }
+        answ.forceActiveFocus()
+        timer.start()
+    }
+
+    Connections {
+        target: timer
+        onTriggered: {
+            if ( state == "addressmode"     ) { go.switchAddressMode   (input) }
+            if ( state == "clearChain"      ) { go.clearKeychain       ()      }
+            if ( state == "clearCache"      ) { go.clearCache          ()      }
+            if ( state == "deleteUser"      ) { go.deleteAccount       (input, checkBoxWrapper.isChecked) }
+            if ( state == "logout"          ) { go.logoutAccount       (input) }
+            if ( state == "toggleAutoStart" ) { go.toggleAutoStart     ()      }
+            if ( state == "quit"            ) { Qt.quit                ()      }
+            if ( state == "instance exists" ) { Qt.quit                ()      }
+            if ( state == "checkUpdates"    ) { go.runCheckVersion     (true)  }
+        }
+    }
+
+    Keys.onPressed: {
+        if (event.key == Qt.Key_Enter) {
+            root.confirmed()
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/ExportStructure.qml

@@ -0,0 +1,149 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of export folders / labels
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    color     : Style.exporting.background
+    radius    : Style.exporting.boxRadius
+    border {
+        color : Style.exporting.line
+        width : Style.dialog.borderInput
+    }
+    property bool hasItems: true
+
+
+    Text { // placeholder
+        visible: !root.hasItems
+        anchors.centerIn: parent
+        color: Style.main.textDisabled
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+        }
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+        text: qsTr("No emails found for this address.","todo")
+    }
+
+
+    property string title  : ""
+
+    TextMetrics {
+        id: titleMetrics
+        text: root.title
+        elide: Qt.ElideMiddle
+        elideWidth: root.width - 4*Style.exporting.leftMargin
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+            bold: true
+        }
+    }
+
+    Rectangle {
+        id: header
+        anchors {
+            top: root.top
+            left: root.left
+        }
+        width  : root.width
+        height : Style.dialog.fontSize*3
+        color  : Style.transparent
+        Rectangle {
+            anchors.bottom: parent.bottom
+            color  : Style.exporting.line
+            height : Style.dialog.borderInput
+            width  : parent.width
+        }
+
+        Text {
+            anchors {
+                left           : parent.left
+                leftMargin     : 2*Style.exporting.leftMargin
+                verticalCenter : parent.verticalCenter
+            }
+            color: Style.dialog.text
+            font: titleMetrics.font
+            text: titleMetrics.elidedText
+        }
+    }
+
+
+    ListView {
+        id: listview
+        clip           : true
+        orientation    : ListView.Vertical
+        boundsBehavior : Flickable.StopAtBounds
+        model          : transferRules
+        cacheBuffer    : 10000
+
+        anchors {
+            left    : root.left
+            right   : root.right
+            bottom  : root.bottom
+            top     : header.bottom
+            margins : Style.dialog.borderInput
+        }
+
+        ScrollBar.vertical: ScrollBar {
+            /*
+             policy: ScrollBar.AsNeeded
+             background : Rectangle {
+                 color  : Style.exporting.sliderBackground
+                 radius : Style.exporting.boxRadius
+             }
+             contentItem : Rectangle {
+                 color         : Style.exporting.sliderForeground
+                 radius        : Style.exporting.boxRadius
+                 implicitWidth : Style.main.rightMargin / 3
+             }
+             */
+            anchors {
+                right: parent.right
+                rightMargin: Style.main.rightMargin/4
+            }
+            width: Style.main.rightMargin/3
+            Accessible.ignored: true
+        }
+
+        delegate: FolderRowButton {
+            property variant modelData: model
+            width      : root.width - 5*root.border.width
+            type       : modelData.type
+            folderIconColor  : modelData.iconColor
+            title      : modelData.name
+            isSelected : modelData.isActive
+            onClicked  : {
+                //console.log("Clicked", folderId, isSelected)
+                transferRules.setIsRuleActive(modelData.mboxID,!model.isActive)
+            }
+        }
+
+        section.property: "type"
+        section.delegate: FolderRowButton {
+            isSection  : true
+            width      : root.width - 5*root.border.width
+            title      : gui.folderTypeTitle(section)
+            isSelected : section == gui.enums.folderTypeLabel ? transferRules.isLabelGroupSelected : transferRules.isFolderGroupSelected
+            onClicked  : transferRules.setIsGroupActive(section,!isSelected)
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/FilterStructure.qml

@@ -0,0 +1,55 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Filter only selected folders or labels
+import QtQuick 2.8
+import QtQml.Models 2.2
+
+
+DelegateModel {
+    id: root
+    model         : structurePM
+    //filterOnGroup : root.folderType
+    //delegate      : root.delegate
+    groups        : [
+        DelegateModelGroup {name: gui.enums.folderTypeFolder ; includeByDefault: false},
+        DelegateModelGroup {name: gui.enums.folderTypeLabel  ; includeByDefault: false}
+    ]
+
+    function updateFilter() {
+        //console.log("FilterModelDelegate::UpdateFilter")
+        // filter
+        var rowCount = root.items.count;
+        for (var iItem = 0; iItem < rowCount; iItem++) {
+            var entry = root.items.get(iItem);
+            entry.inLabel = (
+                root.filterOnGroup        == gui.enums.folderTypeLabel &&
+                entry.model.folderType == gui.enums.folderTypeLabel
+            )
+            entry.inFolder = (
+                root.filterOnGroup        == gui.enums.folderTypeFolder &&
+                entry.model.folderType != gui.enums.folderTypeLabel
+            )
+            /*
+             if (entry.inFolder && entry.model.folderId == selectedIDs) {
+                 view.currentIndex = iItem
+             }
+             */
+            //console.log("::::update filter:::::", iItem, entry.model.folderName, entry.inFolder, entry.inLabel)
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/FolderRowButton.qml

@@ -0,0 +1,99 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Checkbox row for folder selection
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+AccessibleButton {
+    id: root
+
+    property bool   isSection  : false
+    property bool   isSelected : false
+    property string title      : "N/A"
+    property string type       : ""
+    property string folderIconColor  : Style.main.textBlue
+
+    height    : Style.exporting.rowHeight
+    padding   : 0.0
+    anchors {
+        horizontalCenter: parent.horizontalCenter
+    }
+
+    background: Rectangle {
+        color: isSection ? Style.exporting.background : Style.exporting.rowBackground
+        Rectangle { // line
+            anchors.bottom : parent.bottom
+            height         : Style.dialog.borderInput
+            width          : parent.width
+            color          : Style.exporting.background
+        }
+    }
+
+    contentItem: Rectangle {
+        color: "transparent"
+        id: content
+        Text {
+            id: checkbox
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : content.left
+                leftMargin     : Style.exporting.leftMargin * (root.type == gui.enums.folderTypeSystem   ? 1.0 : 2.0)
+            }
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+            color : isSelected ? Style.main.text : Style.main.textInactive
+            text  : (isSelected ? Style.fa.check_square_o : Style.fa.square_o )
+        }
+
+        Text { // icon
+            id: folderIcon
+            visible: !isSection
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : checkbox.left
+                leftMargin     : Style.dialog.fontSize + Style.exporting.leftMargin
+            }
+            color : root.type=="" ? Style.main.textBlue : root.folderIconColor
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+            text  : {
+                return gui.folderIcon(root.title.toLowerCase(), root.type)
+            }
+        }
+
+        Text {
+            text: root.title
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : isSection ? checkbox.left : folderIcon.left
+                leftMargin     : Style.dialog.fontSize + Style.exporting.leftMargin
+            }
+            font {
+                pointSize : Style.dialog.fontSize * Style.pt
+                bold: isSection
+            }
+            color: Style.exporting.text
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/HelpView.qml

@@ -0,0 +1,129 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List the settings
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+
+    // must have wrapper
+    Rectangle {
+        id: wrapper
+        anchors.centerIn: parent
+        width: parent.width
+        height: parent.height
+        color: Style.main.background
+
+        // content
+        Column {
+            anchors.horizontalCenter : parent.horizontalCenter
+
+
+            ButtonIconText {
+                id: manual
+                anchors.left: parent.left
+                text: qsTr("Setup Guide")
+                leftIcon.text  : Style.fa.book
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: go.openManual()
+            }
+
+            ButtonIconText {
+                id: updates
+                anchors.left: parent.left
+                text: qsTr("Check for Updates")
+                leftIcon.text  : Style.fa.refresh
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: {
+                    dialogGlobal.state="checkUpdates"
+                    dialogGlobal.show()
+                    dialogGlobal.confirmed()
+                }
+            }
+
+            Rectangle {
+                anchors.horizontalCenter : parent.horizontalCenter
+                height: Math.max (
+                    aboutText.height +
+                    Style.main.fontSize,
+                    wrapper.height - (
+                        2*manual.height +
+                        creditsLink.height +
+                        Style.main.fontSize
+                    )
+                )
+                width: wrapper.width
+                color : Style.transparent
+                Text {
+                    id: aboutText
+                    anchors {
+                        bottom: parent.bottom
+                        horizontalCenter: parent.horizontalCenter
+                    }
+                    color: Style.main.textDisabled
+                    horizontalAlignment: Qt.AlignHCenter
+                    font.family : Style.fontawesome.name
+                    text: "ProtonMail Import-Export app Version "+go.getBackendVersion()+"\n"+Style.fa.copyright + " 2020 Proton Technologies AG"
+                }
+            }
+
+            Row {
+                anchors.horizontalCenter : parent.horizontalCenter
+                spacing : Style.main.dummy
+
+                Text {
+                    id: creditsLink
+                    text  : qsTr("Credits", "link to click on to view list of credited libraries")
+                    color : Style.main.textDisabled
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    font.underline: true
+                    MouseArea {
+                        anchors.fill: parent
+                        onClicked : {
+                            winMain.dialogCredits.show()
+                        }
+                        cursorShape: Qt.PointingHandCursor
+                    }
+                }
+
+
+                Text {
+                    id: releaseNotes
+                    text  : qsTr("Release notes", "link to click on to view release notes for this version of the app")
+                    color : Style.main.textDisabled
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    font.underline: true
+                    MouseArea {
+                        anchors.fill: parent
+                        onClicked : {
+                            go.getLocalVersionInfo()
+                            winMain.dialogVersionInfo.show()
+                        }
+                        cursorShape: Qt.PointingHandCursor
+                    }
+                }
+            }
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/IEStyle.qml

@@ -0,0 +1,106 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Adjust Bridge Style
+
+import QtQuick 2.8
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+Item {
+    Component.onCompleted : {
+        //Style.refdpi = go.goos == "darwin" ? 86.0 : 96.0
+        Style.pt     = go.goos == "darwin" ? 93/Style.dpi : 80/Style.dpi
+
+        Style.main.background   = "#fff"
+        Style.main.text         = "#505061"
+        Style.main.textInactive = "#686876"
+        Style.main.line         = "#dddddd"
+        Style.main.width        = 884 * Style.px
+        Style.main.height       = 422 * Style.px
+        Style.main.leftMargin   = 25 * Style.px
+        Style.main.rightMargin  = 25 * Style.px
+
+        Style.title.background = Style.main.text
+        Style.title.text       = Style.main.background
+
+        Style.tabbar.background    = "#3D3A47"
+        Style.tabbar.rightButton   = "add account"
+        Style.tabbar.spacingButton = 45*Style.px
+
+        Style.accounts.backgroundExpanded = "#fafafa"
+        Style.accounts.backgroundAddrRow  = "#fff"
+        Style.accounts.leftMargin2        = Style.main.width/2
+        Style.accounts.leftMargin3        = 5.5*Style.main.width/8
+
+
+        Style.dialog.background   = "#fff"
+        Style.dialog.text         = Style.main.text
+        Style.dialog.line         = "#e2e2e2"
+        Style.dialog.fontSize     = 12 * Style.px
+        Style.dialog.heightInput  = 2.2*Style.dialog.fontSize
+        Style.dialog.heightButton = Style.dialog.heightInput
+        Style.dialog.borderInput  = 1 * Style.px
+
+        Style.bubble.background     = "#595966"
+        Style.bubble.paneBackground = "#454553"
+        Style.bubble.text           = "#fff"
+        Style.bubble.width          = 310 * Style.px
+        Style.bubble.widthPane      = 36  * Style.px
+        Style.bubble.iconSize       = 14  * Style.px
+
+
+        // colors:
+        // text: #515061
+        // tick: #686876
+        // blue icon: #9396cc
+        // row bck: #f8f8f9
+        // line: #ddddde or #e2e2e2
+        //
+        // slider bg: #e6e6e6
+        // slider fg: #515061
+        // info icon: #c3c3c8
+        // input border: #ebebeb
+        //
+        // bubble color: #595966
+        // bubble pane: #454553
+        // bubble text: #fff
+        //
+        // indent folder
+        //
+        // Dimensions:
+        // full width: 882px
+        // leftMargin: 25px
+        // rightMargin: 25px
+        // rightMargin: 25px
+        // middleSeparator: 69px
+        // width folders: 416px or (width - separators) /2
+        // width output: 346px or (width - separators) /2
+        //
+        // height from top to input begin: 78px
+        // heightSeparator: 27px
+        // height folder input: 26px
+        //
+        // buble width: 309px
+        // buble left pane icon: 14px
+        // buble left pane width: 36px or (2.5 icon width)
+        // buble height: 46px
+        // buble arrow height: 12px
+        // buble arrow width: 14px
+        // buble radius: 3-4px
+    }
+}

internal/frontend/qml/ImportExportUI/ImportDelegate.qml

@@ -0,0 +1,154 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    color: Style.importing.rowBackground
+    height: 40
+    width: 300
+    property real leftMargin1 : folderIcon.x - root.x
+    property real leftMargin2 : selectFolder.x - root.x
+    property real nameWidth : {
+        var available = root.width
+        available -= rowPlacement.children.length * rowPlacement.spacing  // spacing between places
+        available -= 3*rowPlacement.leftPadding // left, and 2x right
+        available -= folderIcon.width
+        available -= arrowIcon.width
+        available -= dateRangeMenu.width
+        return available/3.3 // source folder label, target folder menu, target labels menu, and 0.3x label list
+    }
+    property real iconWidth : nameWidth*0.3
+
+    property bool isSourceSelected: isActive
+    property string lastTargetFolder: "6" // Archive
+    property string lastTargetLabels: "" // no flag by default
+
+    property string sourceID   : mboxID
+    property string sourceName : name
+
+    Rectangle {
+        id: line
+        anchors {
+            left   : parent.left
+            right  : parent.right
+            bottom : parent.bottom
+        }
+        height : Style.main.border * 2
+        color  : Style.importing.rowLine
+    }
+
+    Row {
+        id: rowPlacement
+        spacing: Style.dialog.spacing
+        leftPadding: Style.dialog.spacing*2
+        anchors.verticalCenter : parent.verticalCenter
+
+        CheckBoxLabel {
+            id: checkBox
+            anchors.verticalCenter : parent.verticalCenter
+            checked: root.isSourceSelected
+
+            onClicked: root.toggleImport()
+        }
+
+        Text {
+            id: folderIcon
+            text : gui.folderIcon(root.sourceName, gui.enums.folderTypeFolder)
+            anchors.verticalCenter : parent.verticalCenter
+            color: root.isSourceSelected ? Style.main.text : Style.main.textDisabled
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Text {
+            text : root.sourceName
+            width: nameWidth
+            elide: Text.ElideRight
+            anchors.verticalCenter : parent.verticalCenter
+            color: folderIcon.color
+            font.pointSize : Style.dialog.fontSize * Style.pt
+        }
+
+        Text {
+            id: arrowIcon
+            text : Style.fa.arrow_right
+            anchors.verticalCenter : parent.verticalCenter
+            color: Style.main.text
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        SelectFolderMenu {
+            id: selectFolder
+            sourceID: root.sourceID
+            targets: transferRules.targetFolders(root.sourceID)
+            width: nameWidth
+            anchors.verticalCenter : parent.verticalCenter
+            enabled: root.isSourceSelected
+            onDoNotImport: root.toggleImport()
+            onImportToFolder: root.importToFolder(newTargetID)
+        }
+
+        SelectLabelsMenu {
+            sourceID: root.sourceID
+            targets: transferRules.targetLabels(root.sourceID)
+            width: nameWidth
+            anchors.verticalCenter : parent.verticalCenter
+            enabled: root.isSourceSelected
+            onAddTargetLabel: { transferRules.addTargetID(sourceID, newTargetID) }
+            onRemoveTargetLabel: { transferRules.removeTargetID(sourceID, newTargetID) }
+        }
+
+        LabelIconList {
+            colorList: labelColors=="" ? [] : labelColors.split(";")
+            width: iconWidth
+            anchors.verticalCenter : parent.verticalCenter
+            enabled: root.isSourceSelected
+        }
+
+        DateRangeMenu {
+            id: dateRangeMenu
+            sourceID: root.sourceID
+            sourceFromDate: fromDate
+            sourceToDate: toDate
+
+            enabled: root.isSourceSelected
+            anchors.verticalCenter : parent.verticalCenter
+
+            Component.onCompleted : dateRangeMenu.updateRange()
+        }
+    }
+
+
+    function importToFolder(newTargetID) {
+        transferRules.addTargetID(root.sourceID,newTargetID)
+    }
+
+    function toggleImport() {
+        transferRules.setIsRuleActive(root.sourceID, !root.isSourceSelected)
+    }
+}

internal/frontend/qml/ImportExportUI/ImportReport.qml

@@ -0,0 +1,216 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Import report modal
+import QtQuick 2.11
+import QtQuick.Controls 2.4
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    color: "#aa101021"
+    visible: false
+
+    MouseArea { // disable bellow
+        anchors.fill: root
+        hoverEnabled: true
+    }
+
+    Rectangle {
+        id:background
+        color: Style.main.background
+        anchors {
+            fill         : root
+            topMargin    : Style.main.rightMargin
+            leftMargin   : 2*Style.main.rightMargin
+            rightMargin  : 2*Style.main.rightMargin
+            bottomMargin : 2.5*Style.main.rightMargin
+        }
+
+        ClickIconText {
+            anchors {
+                top     : parent.top
+                right   : parent.right
+                margins : .5* Style.main.rightMargin
+            }
+            iconText  : Style.fa.times
+            text      : ""
+            textColor : Style.main.textBlue
+            onClicked : root.hide()
+            Accessible.description : qsTr("Close dialog %1", "Click to exit modal.").arg(title.text)
+        }
+
+        Text {
+            id: title
+            text : qsTr("List of errors")
+            font {
+                pointSize: Style.dialog.titleSize * Style.pt
+            }
+            anchors {
+                top              : parent.top
+                topMargin        : 0.5*Style.main.rightMargin
+                horizontalCenter : parent.horizontalCenter
+            }
+        }
+
+        ListView {
+            id: errorView
+            anchors {
+                left    : parent.left
+                right   : parent.right
+                top     : title.bottom
+                bottom  : detailBtn.top
+                margins : Style.main.rightMargin
+            }
+
+            clip               : true
+            flickableDirection : Flickable.HorizontalAndVerticalFlick
+            contentWidth       : errorView.rWall
+            boundsBehavior     : Flickable.StopAtBounds
+
+            ScrollBar.vertical: ScrollBar {
+                anchors {
+                    right        : parent.right
+                    top          : parent.top
+                    rightMargin  : Style.main.rightMargin/4
+                    topMargin    : Style.main.rightMargin
+                }
+                width: Style.main.rightMargin/3
+                Accessible.ignored: true
+            }
+            ScrollBar.horizontal: ScrollBar {
+                anchors {
+                    bottom       : parent.bottom
+                    right        : parent.right
+                    bottomMargin : Style.main.rightMargin/4
+                    rightMargin  : Style.main.rightMargin
+                }
+                height: Style.main.rightMargin/3
+                Accessible.ignored: true
+            }
+
+
+
+            property real rW1   : 150 *Style.px
+            property real rW2   : 150 *Style.px
+            property real rW3   : 100 *Style.px
+            property real rW4   : 150 *Style.px
+            property real rW5   : 550 *Style.px
+            property real rWall : errorView.rW1+errorView.rW2+errorView.rW3+errorView.rW4+errorView.rW5
+            property real pH    : .5*Style.main.rightMargin
+
+            model    : errorList
+            delegate : Rectangle {
+                width  : Math.max(errorView.width, row.width)
+                height : row.height
+
+                Row {
+                    id: row
+
+                    spacing       : errorView.pH
+                    leftPadding   : errorView.pH
+                    rightPadding  : errorView.pH
+                    topPadding    : errorView.pH
+                    bottomPadding : errorView.pH
+
+                    ImportReportCell { width : errorView.rW1; text : mailSubject  }
+                    ImportReportCell { width : errorView.rW2; text : mailDate     }
+                    ImportReportCell { width : errorView.rW3; text : inputFolder  }
+                    ImportReportCell { width : errorView.rW4; text : mailFrom     }
+                    ImportReportCell { width : errorView.rW5; text : errorMessage }
+                }
+
+                Rectangle {
+                    color          : Style.main.line
+                    height         : .8*Style.px
+                    width          : parent.width
+                    anchors.left   : parent.left
+                    anchors.bottom : parent.bottom
+                }
+            }
+
+            headerPositioning: ListView.OverlayHeader
+            header: Rectangle {
+                height : viewHeader.height
+                width  : Math.max(errorView.width, viewHeader.width)
+                color  : Style.accounts.backgroundExpanded
+                z      : 2
+
+                Row {
+                    id: viewHeader
+
+                    spacing       : errorView.pH
+                    leftPadding   : errorView.pH
+                    rightPadding  : errorView.pH
+                    topPadding    : .5*errorView.pH
+                    bottomPadding : .5*errorView.pH
+
+                    ImportReportCell { width : errorView.rW1 ; text : qsTr ( "SUBJECT"   ); isHeader: true }
+                    ImportReportCell { width : errorView.rW2 ; text : qsTr ( "DATE/TIME" ); isHeader: true }
+                    ImportReportCell { width : errorView.rW3 ; text : qsTr ( "FOLDER"    ); isHeader: true }
+                    ImportReportCell { width : errorView.rW4 ; text : qsTr ( "FROM"      ); isHeader: true }
+                    ImportReportCell { width : errorView.rW5 ; text : qsTr ( "ERROR"     ); isHeader: true }
+                }
+
+                Rectangle {
+                    color          : Style.main.line
+                    height         : .8*Style.px
+                    width          : parent.width
+                    anchors.left   : parent.left
+                    anchors.bottom : parent.bottom
+                }
+            }
+        }
+
+        Rectangle {
+            anchors{
+                fill    : errorView
+                margins : -radius
+            }
+            radius : 2* Style.px
+            color  : Style.transparent
+            border {
+                width : Style.px
+                color : Style.main.line
+            }
+        }
+
+        ButtonRounded {
+            id: detailBtn
+            fa_icon    : Style.fa.file_text
+            text       : qsTr("Detailed file")
+            color_main : Style.dialog.textBlue
+            onClicked  : go.importLogFileName == "" ? go.openLogs() : go.openReport()
+
+            anchors {
+                bottom           : parent.bottom
+                bottomMargin     : 0.5*Style.main.rightMargin
+                horizontalCenter : parent.horizontalCenter
+            }
+        }
+    }
+
+
+    function show() {
+        root.visible = true
+    }
+
+    function hide() {
+        root.visible = false
+    }
+}

internal/frontend/qml/ImportExportUI/ImportReportCell.qml

@@ -0,0 +1,67 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Import report modal
+import QtQuick 2.11
+import QtQuick.Controls 2.4
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Rectangle {
+    id: root
+
+    property alias text      : cellText.text
+    property bool  isHeader  : false
+    property bool  isHovered : false
+    property bool  isWider   : cellText.contentWidth > root.width
+
+    width  : 20*Style.px
+    height : cellText.height
+    z      : root.isHovered ? 3 : 1
+    color  : Style.transparent
+
+    Rectangle {
+        anchors {
+            fill    : cellText
+            margins : -2*Style.px
+        }
+        color : root.isWider ? Style.main.background : Style.transparent
+        border {
+            color : root.isWider ? Style.main.textDisabled : Style.transparent
+            width : Style.px
+        }
+    }
+
+    Text {
+        id: cellText
+        color : root.isHeader  ? Style.main.textDisabled : Style.main.text
+        elide : root.isHovered ? Text.ElideNone          : Text.ElideRight
+        width : root.isHovered ? cellText.contentWidth   : root.width
+        font {
+            pointSize : Style.main.textSize * Style.pt
+            family    : Style.fontawesome.name
+        }
+    }
+
+    MouseArea {
+        anchors.fill : root
+        hoverEnabled : !root.isHeader
+        onEntered    : { root.isHovered = true  }
+        onExited     : { root.isHovered = false }
+    }
+}

internal/frontend/qml/ImportExportUI/ImportSourceButton.qml

@@ -0,0 +1,89 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Export dialog
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+
+Button {
+    id: root
+
+    width  : 200
+    height : icon.height + 4*tag.height
+    scale  : pressed ? 0.95 : 1.0
+
+    property string iconText : Style.fa.ban
+
+    background: Rectangle { color: "transparent" }
+
+    contentItem: Rectangle {
+        id: wrapper
+        color: "transparent"
+
+        Image {
+            id: icon
+            anchors {
+                bottom           : wrapper.bottom
+                bottomMargin     : tag.height*2.5
+                horizontalCenter : wrapper.horizontalCenter
+            }
+            fillMode : Image.PreserveAspectFit
+            width    : Style.main.fontSize * 7
+            mipmap   : true
+            source   : "images/"+iconText+".png"
+
+        }
+
+        Row {
+            spacing: Style.dialog.spacing
+            anchors {
+                bottom           : wrapper.bottom
+                horizontalCenter : wrapper.horizontalCenter
+            }
+
+            Text {
+                id: tag
+
+                text  : Style.fa.plus_circle
+                color : Qt.lighter( Style.dialog.textBlue, root.enabled ? 1.0 : 1.5)
+
+                font {
+                    family    : Style.fontawesome.name
+                    pointSize : Style.main.fontSize * Style.pt * 1.2
+                }
+            }
+
+            Text {
+                text  : root.text
+                color: tag.color
+
+                font {
+                    family    : tag.font.family
+                    pointSize : tag.font.pointSize
+                    weight    : Font.DemiBold
+                    underline : true
+                }
+            }
+        }
+    }
+}
+
+

internal/frontend/qml/ImportExportUI/ImportStructure.qml

@@ -0,0 +1,148 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    property string titleFrom
+    property string titleTo
+    property bool   hasItems: true
+
+    color : Style.transparent
+
+    Rectangle {
+        anchors.fill: root
+        radius : Style.dialog.radiusButton
+        color : Style.transparent
+        border {
+            color : Style.main.line
+            width : 1.5*Style.dialog.borderInput
+        }
+
+
+        Text { // placeholder
+            visible: !root.hasItems
+            anchors.centerIn: parent
+            color: Style.main.textDisabled
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+            }
+            horizontalAlignment: Text.AlignHCenter
+            verticalAlignment: Text.AlignVCenter
+            text: qsTr("No emails found for this source.","todo")
+        }
+    }
+
+    anchors {
+        left   : parent.left
+        right  : parent.right
+        top    : parent.top
+        bottom : parent.bottom
+
+        leftMargin   : Style.main.leftMargin
+        rightMargin  : Style.main.leftMargin
+        topMargin    : Style.main.topMargin
+        bottomMargin : Style.main.bottomMargin
+    }
+
+    ListView {
+        id: listview
+        clip           : true
+        orientation    : ListView.Vertical
+        boundsBehavior : Flickable.StopAtBounds
+        model          : transferRules
+        cacheBuffer    : 10000
+        delegate       : ImportDelegate {
+            width: root.width
+        }
+
+        anchors {
+            top: titleBox.bottom
+            bottom: root.bottom
+            left: root.left
+            right: root.right
+            margins : Style.dialog.borderInput
+            bottomMargin: Style.dialog.radiusButton
+        }
+
+        ScrollBar.vertical: ScrollBar {
+            anchors {
+                right: parent.right
+                rightMargin: Style.main.rightMargin/4
+            }
+            width: Style.main.rightMargin/3
+            Accessible.ignored: true
+        }
+    }
+
+    Rectangle {
+        id: titleBox
+        anchors {
+            top: parent.top
+            left: parent.left
+            right: parent.right
+        }
+        height: Style.main.fontSize *2
+        color : Style.transparent
+
+        Text {
+            id: textTitleFrom
+            anchors {
+                left: parent.left
+                verticalCenter: parent.verticalCenter
+                leftMargin: {
+                    if (listview.currentItem === null) return 0
+                    else return listview.currentItem.leftMargin1
+                }
+            }
+            text: "<b>"+qsTr("From:")+"</b> " + root.titleFrom
+            color: Style.main.text
+            width: listview.currentItem === null  ? 0 : (listview.currentItem.leftMargin2 - listview.currentItem.leftMargin1 - Style.dialog.spacing)
+            elide: Text.ElideMiddle
+        }
+
+        Text {
+            id: textTitleTo
+            anchors {
+                left: parent.left
+                verticalCenter: parent.verticalCenter
+                leftMargin: {
+                    if (listview.currentIndex<0) return root.width/3
+                    else return listview.currentItem.leftMargin2
+                }
+            }
+            text: "<b>"+qsTr("To:")+"</b> " + root.titleTo
+            color: Style.main.text
+        }
+    }
+
+    Rectangle {
+        id: line
+        anchors {
+            left  : titleBox.left
+            right : titleBox.right
+            top   : titleBox.bottom
+        }
+        height: Style.dialog.borderInput
+        color: Style.main.line
+    }
+}

internal/frontend/qml/ImportExportUI/InlineDateRange.qml

@@ -0,0 +1,129 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Row {
+    id: dateRange
+
+    property var   structure : transferRules
+    property string sourceID : "-1"
+
+    property alias allDates      : allDatesBox.checked
+    property alias inputDateFrom : inputDateFrom
+    property alias inputDateTo   : inputDateTo
+
+    property alias labelWidth: label.width
+
+    function getRange() {common.getRange()}
+    function applyRange() {common.applyRange()}
+
+    DateRangeFunctions {id:common}
+
+    spacing: Style.dialog.spacing*2
+
+    Text {
+        id: label
+        anchors.verticalCenter: parent.verticalCenter
+        text : qsTr("Date range")
+        font {
+            bold: true
+            family: Style.fontawesome.name
+            pointSize: Style.main.fontSize * Style.pt
+        }
+        color: Style.main.text
+    }
+
+    DateInput {
+        id: inputDateFrom
+        label: ""
+        anchors.verticalCenter: parent.verticalCenter
+        currentDate: new Date(0) // default epoch start
+        maxDate: inputDateTo.currentDate
+    }
+
+    Text {
+        text : Style.fa.arrows_h
+        anchors.verticalCenter: parent.verticalCenter
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+        color: Style.main.text
+        font.family: Style.fontawesome.name
+    }
+
+    DateInput {
+        id: inputDateTo
+        label: ""
+        anchors.verticalCenter: parent.verticalCenter
+        currentDate: new Date() // default now
+        minDate: inputDateFrom.currentDate
+        isMaxDateToday: true
+    }
+
+    CheckBoxLabel {
+        id: allDatesBox
+        text                   : qsTr("All dates")
+        anchors.verticalCenter : parent.verticalCenter
+        checkedSymbol          : Style.fa.toggle_on
+        uncheckedSymbol        : Style.fa.toggle_off
+        uncheckedColor         : Style.main.textDisabled
+        symbolPointSize        : Style.dialog.iconSize * Style.pt * 1.1
+        spacing                : Style.dialog.spacing*2
+
+        TextMetrics {
+            id: metrics
+            text: allDatesBox.checkedSymbol
+            font {
+                family: Style.fontawesome.name
+                pointSize: allDatesBox.symbolPointSize
+            }
+        }
+
+
+        Rectangle {
+            color: allDatesBox.checked ? dotBackground.color : Style.exporting.sliderBackground
+            width: metrics.width*0.9
+            height: metrics.height*0.6
+            radius: height/2
+            z: -1
+
+            anchors {
+                left: allDatesBox.left
+                verticalCenter: allDatesBox.verticalCenter
+                leftMargin: 0.05 * metrics.width
+            }
+
+            Rectangle {
+                id: dotBackground
+                color  : Style.exporting.background
+                height : parent.height
+                width  : height
+                radius : height/2
+                anchors {
+                    left           : parent.left
+                    verticalCenter : parent.verticalCenter
+                }
+
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/InlineLabelSelect.qml

@@ -0,0 +1,227 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Row {
+    id: root
+    spacing: Style.dialog.spacing
+
+    property alias labelWidth : label.width
+
+    property string labelName     : ""
+    property string labelColor    : ""
+    property alias  labelSelected : masterLabelCheckbox.checked
+
+    Text {
+        id: label
+        text : qsTr("Add import label")
+        font {
+            bold: true
+            family: Style.fontawesome.name
+            pointSize: Style.main.fontSize * Style.pt
+        }
+        color: Style.main.text
+        anchors.verticalCenter: parent.verticalCenter
+    }
+
+    InfoToolTip {
+        info: qsTr( "When master import lablel is selected then all imported email will have this label.", "Tooltip text for master import label")
+        anchors.verticalCenter: parent.verticalCenter
+    }
+
+    CheckBoxLabel {
+        id: masterLabelCheckbox
+        text                   : ""
+        anchors.verticalCenter : parent.verticalCenter
+        checkedSymbol          : Style.fa.toggle_on
+        uncheckedSymbol        : Style.fa.toggle_off
+        uncheckedColor         : Style.main.textDisabled
+        symbolPointSize        : Style.dialog.iconSize * Style.pt * 1.1
+        spacing                : Style.dialog.spacing*2
+
+        TextMetrics {
+            id: metrics
+            text: masterLabelCheckbox.checkedSymbol
+            font {
+                family: Style.fontawesome.name
+                pointSize: masterLabelCheckbox.symbolPointSize
+            }
+        }
+
+
+        Rectangle {
+            color: parent.checked ? dotBackground.color : Style.exporting.sliderBackground
+            width: metrics.width*0.9
+            height: metrics.height*0.6
+            radius: height/2
+            z: -1
+
+            anchors {
+                left: masterLabelCheckbox.left
+                verticalCenter: masterLabelCheckbox.verticalCenter
+                leftMargin: 0.05 * metrics.width
+            }
+
+            Rectangle {
+                id: dotBackground
+                color  : Style.exporting.background
+                height : parent.height
+                width  : height
+                radius : height/2
+                anchors {
+                    left           : parent.left
+                    verticalCenter : parent.verticalCenter
+                }
+
+            }
+        }
+    }
+
+    Rectangle {
+        // label
+        color  : Style.transparent
+        radius : Style.dialog.radiusButton
+        border {
+            color : Style.dialog.line
+            width : Style.dialog.borderInput
+        }
+        anchors.verticalCenter : parent.verticalCenter
+
+        scale: area.pressed ? 0.95 : 1
+
+        width: content.width
+        height: content.height
+
+
+        Row {
+            id: content
+
+            spacing   : Style.dialog.spacing
+            padding   : Style.dialog.spacing
+
+            anchors.verticalCenter: parent.verticalCenter
+
+            // label icon color
+            Text {
+                text: Style.fa.tag
+                color: root.labelSelected ? root.labelColor : Style.dialog.line
+                anchors.verticalCenter: parent.verticalCenter
+                font {
+                    family: Style.fontawesome.name
+                    pointSize: Style.main.fontSize * Style.pt
+                }
+            }
+
+            TextMetrics {
+                id:labelMetrics
+                text: root.labelName
+                elide: Text.ElideRight
+                elideWidth:gui.winMain.width*0.303
+
+                font {
+                    pointSize: Style.main.fontSize * Style.pt
+                    family: Style.fontawesome.name
+                }
+            }
+
+            // label text
+            Text {
+                text: labelMetrics.elidedText
+                color: root.labelSelected ? Style.dialog.text : Style.dialog.line
+                font: labelMetrics.font
+                anchors.verticalCenter: parent.verticalCenter
+            }
+
+            // edit icon
+            Text {
+                text: Style.fa.edit
+                color: root.labelSelected ? Style.main.textBlue : Style.dialog.line
+                anchors.verticalCenter: parent.verticalCenter
+                font {
+                    family: Style.fontawesome.name
+                    pointSize: Style.main.fontSize * Style.pt
+                }
+            }
+        }
+
+        MouseArea {
+            id: area
+            anchors.fill: parent
+            enabled: root.labelSelected
+            onClicked : {
+                if (!root.labelSelected) return
+                // NOTE: "createLater" is hack
+                winMain.popupFolderEdit.show(root.labelName, "createLater", root.labelColor, gui.enums.folderTypeLabel, "")
+            }
+        }
+    }
+
+    function reset(){
+        labelColor  = go.leastUsedColor()
+        labelName = qsTr("Imported", "default name of global label followed by date") + " " + gui.niceDateTime()
+        labelSelected=true
+    }
+
+    Connections {
+        target: winMain.popupFolderEdit
+
+        onEdited : {
+            if (newName!="") root.labelName = newName
+            if (newColor!="") root.labelColor = newColor
+        }
+    }
+
+
+    /*
+     SelectLabelsMenu {
+         id: labelMenu
+         width       : winMain.width/5
+         sourceID    : root.sourceID
+         selectedIDs : root.structure.getTargetLabelIDs(root.sourceID)
+         anchors.verticalCenter: parent.verticalCenter
+     }
+
+     LabelIconList {
+         id: iconList
+         selectedIDs : root.structure.getTargetLabelIDs(root.sourceID)
+         anchors.verticalCenter: parent.verticalCenter
+     }
+
+
+     Connections {
+         target: structureExternal
+         onDataChanged: {
+             iconList.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+             labelMenu.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+         }
+     }
+
+     Connections {
+         target: structurePM
+         onDataChanged:{
+             iconList.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+             labelMenu.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+         }
+     }
+     */
+}

internal/frontend/qml/ImportExportUI/LabelIconList.qml

@@ -0,0 +1,65 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of icons for selected folders
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import QtQml.Models 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    width: Style.main.fontSize * 2
+    height: metrics.height
+    property var colorList
+    color: "transparent"
+
+    DelegateModel {
+        id: selectedLabels
+        model     : colorList
+        delegate  : Text {
+            text  : metrics.text
+            font  : metrics.font
+            color : modelData
+        }
+    }
+
+    TextMetrics {
+        id: metrics
+        text: Style.fa.tag
+        font {
+            pointSize: Style.main.fontSize * Style.pt
+            family: Style.fontawesome.name
+        }
+    }
+
+    Row {
+        anchors.left : root.left
+        spacing : {
+            var n = Math.max(2,root.colorList.length)
+            var tagWidth = Math.max(1.0,metrics.width)
+            var space = Math.min(1*Style.px, (root.width - n*tagWidth)/(n-1)) // not more than 1px
+            space = Math.max(space,-tagWidth) // not less than tag width
+            return space
+        }
+
+        Repeater {
+            model: selectedLabels
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/MainWindow.qml

@@ -0,0 +1,475 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// This is main window
+
+import QtQuick 2.8
+import QtQuick.Window 2.2
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+
+// Main Window
+Window {
+    id                               : root
+    property alias tabbar            : tabbar
+    property alias viewContent       : viewContent
+    property alias viewAccount       : viewAccount
+    property alias dialogAddUser     : dialogAddUser
+    property alias dialogGlobal      : dialogGlobal
+    property alias dialogCredits     : dialogCredits
+    property alias dialogVersionInfo : dialogVersionInfo
+    property alias dialogUpdate      : dialogUpdate
+    property alias popupMessage      : popupMessage
+    property alias popupFolderEdit   : popupFolderEdit
+    property alias updateState       : infoBar.state
+    property alias dialogExport      : dialogExport
+    property alias dialogImport      : dialogImport
+    property alias addAccountTip     : addAccountTip
+    property int   heightContent     : height-titleBar.height
+
+    property real   innerWindowBorder   : go.goos=="darwin" ? 0 : Style.main.border
+
+    // main window appearance
+    width  : Style.main.width
+    height : Style.main.height
+    flags  : go.goos=="darwin" ? Qt.Window : Qt.Window | Qt.FramelessWindowHint
+    color: go.goos=="windows" ? Style.main.background : Style.transparent
+    title: go.programTitle
+
+    minimumWidth  : Style.main.width
+    minimumHeight : Style.main.height
+
+    property bool isOutdateVersion : root.updateState == "forceUpgrade"
+
+    property bool activeContent :
+    !dialogAddUser     .visible &&
+    !dialogCredits     .visible &&
+    !dialogVersionInfo .visible &&
+    !dialogGlobal      .visible &&
+    !dialogUpdate      .visible &&
+    !dialogImport      .visible &&
+    !dialogExport      .visible &&
+    !popupFolderEdit   .visible &&
+    !popupMessage      .visible
+
+    Accessible.role: Accessible.Grouping
+    Accessible.description: qsTr("Window %1").arg(title)
+    Accessible.name: Accessible.description
+
+    WindowTitleBar {
+        id: titleBar
+        window: root
+        visible: go.goos!="darwin"
+    }
+
+    Rectangle {
+        anchors {
+            top   : titleBar.bottom
+            left  : parent.left
+            right : parent.right
+            bottom : parent.bottom
+        }
+        color: Style.title.background
+    }
+
+    InformationBar {
+        id: infoBar
+        anchors {
+            left  : parent.left
+            right : parent.right
+            top   : titleBar.bottom
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+    }
+
+    TabLabels  {
+        id: tabbar
+        currentIndex : 0
+        enabled: root.activeContent
+        anchors {
+            top   : infoBar.bottom
+            right : parent.right
+            left  : parent.left
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+        model: [
+            { "title" : qsTr("Import-Export" , "title of tab that shows account list"             ), "iconText": Style.fa.home      },
+            { "title" : qsTr("Settings"      , "title of tab that allows user to change settings" ), "iconText": Style.fa.cogs      },
+            { "title" : qsTr("Help"          , "title of tab that shows the help menu"            ), "iconText": Style.fa.life_ring }
+        ]
+    }
+
+    // Content of tabs
+    StackLayout  {
+        id: viewContent
+        enabled: root.activeContent
+        // dimensions
+        anchors {
+            left   : parent.left
+            right  : parent.right
+            top    : tabbar.bottom
+            bottom : parent.bottom
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+            bottomMargin: innerWindowBorder
+        }
+        // attributes
+        currentIndex : { return root.tabbar.currentIndex}
+        clip         : true
+        // content
+        AccountView  {
+            id           : viewAccount
+            onAddAccount : dialogAddUser.show()
+            model        : accountsModel
+            hasFooter    : false
+            delegate     : AccountDelegate {
+                row_width : viewContent.width
+            }
+        }
+        SettingsView { id: viewSettings; }
+        HelpView     { id: viewHelp;     }
+    }
+
+
+    // Bubble prevent action
+    Rectangle {
+        anchors {
+            left: parent.left
+            right: parent.right
+            top: titleBar.bottom
+            bottom: parent.bottom
+        }
+        visible: bubbleNote.visible
+        color: "#aa222222"
+        MouseArea {
+            anchors.fill: parent
+            hoverEnabled: true
+        }
+    }
+    BubbleNote {
+        id      : bubbleNote
+        visible : false
+        Component.onCompleted : {
+            bubbleNote.place(0)
+        }
+    }
+
+    BubbleNote {
+        id:addAccountTip
+        anchors.topMargin: viewAccount.separatorNoAccount - 2*Style.main.fontSize
+        text : qsTr("Click here to start", "on first launch, this is displayed above the Add Account button to tell the user what to do first")
+        state: (go.isFirstStart && viewAccount.numAccounts==0 && root.viewContent.currentIndex==0) ? "Visible" : "Invisible"
+        bubbleColor: Style.main.textBlue
+
+        Component.onCompleted : {
+            addAccountTip.place(-1)
+        }
+        enabled: false
+
+        states: [
+            State {
+                name: "Visible"
+                // hack: opacity 100% makes buttons dialog windows quit wrong color
+                PropertyChanges{target: addAccountTip; opacity: 0.999; visible: true}
+            },
+            State {
+                name: "Invisible"
+                PropertyChanges{target: addAccountTip; opacity: 0.0; visible: false}
+            }
+        ]
+
+        transitions: [
+            Transition {
+                from: "Visible"
+                to: "Invisible"
+
+                SequentialAnimation{
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "opacity"
+                        duration: 0
+                        easing.type: Easing.InOutQuad
+                    }
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "visible"
+                        duration: 0
+                    }
+                }
+            },
+            Transition {
+                from: "Invisible"
+                to: "Visible"
+                SequentialAnimation{
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "visible"
+                        duration: 300
+                    }
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "opacity"
+                        duration: 500
+                        easing.type: Easing.InOutQuad
+                    }
+                }
+            }
+        ]
+    }
+
+
+    // Dialogs
+
+    DialogAddUser {
+        id: dialogAddUser
+
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+        onCreateAccount: Qt.openUrlExternally("https://protonmail.com/signup")
+    }
+
+    DialogUpdate {
+        id: dialogUpdate
+
+        title: root.isOutdateVersion ?
+        qsTr("%1 is outdated", "title of outdate dialog").arg(go.programTitle):
+        qsTr("%1 update to %2", "title of update dialog").arg(go.programTitle).arg(go.newversion)
+        introductionText: {
+            if (root.isOutdateVersion) {
+                if (go.goos=="linux") {
+                    return qsTr('You are using an outdated version of our software.<br>
+                    Please dowload and install the latest version to continue using %1.<br><br>
+                    <a href="%2">%2</a>',
+                    "Message for force-update in Linux").arg(go.programTitle).arg(go.landingPage)
+                } else {
+                    return qsTr('You are using an outdated version of our software.<br>
+                    Please dowload and install the latest version to continue using %1.<br><br>
+                    You can continue with update or download and install the new version manually from<br><br>
+                    <a href="%2">%2</a>',
+                    "Message for force-update in Win/Mac").arg(go.programTitle).arg(go.landingPage)
+                }
+            } else {
+                if (go.goos=="linux") {
+                    return qsTr('New version of %1 is available.<br>
+                    Check <a href="%2">release notes</a> to learn what is new in %3.<br>
+                    Use your package manager to update or download and install new version manually from<br><br>
+                    <a href="%4">%4</a>',
+                    "Message for update in Linux").arg(go.programTitle).arg("releaseNotes").arg(go.newversion).arg(go.landingPage)
+                } else {
+                    return qsTr('New version of %1 is available.<br>
+                    Check <a href="%2">release notes</a> to learn what is new in %3.<br>
+                    You can continue with update or download and install new version manually from<br><br>
+                    <a href="%4">%4</a>',
+                    "Message for update in Win/Mac").arg(go.programTitle).arg("releaseNotes").arg(go.newversion).arg(go.landingPage)
+                }
+            }
+        }
+    }
+
+
+    DialogExport {
+        id: dialogExport
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+    }
+
+    DialogImport {
+        id: dialogImport
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+    }
+
+    Dialog {
+        id: dialogCredits
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+        title: qsTr("Credits", "title for list of credited libraries")
+
+        Credits { }
+    }
+
+    Dialog {
+        id: dialogVersionInfo
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+        property bool checkVersion : false
+        title: qsTr("Information about", "title of release notes page") + " v" + go.newversion
+        VersionInfo { }
+        onShow : {
+            // Hide information bar with olde version
+            if ( infoBar.state=="oldVersion" ) {
+                infoBar.state="upToDate"
+                dialogVersionInfo.checkVersion = true
+            }
+        }
+        onHide : {
+            // Reload current version based on online status
+            if (dialogVersionInfo.checkVersion) go.runCheckVersion(false)
+            dialogVersionInfo.checkVersion = false
+        }
+    }
+
+    DialogYesNo {
+        id: dialogGlobal
+        question : ""
+        answer   : ""
+        z: 100
+    }
+
+    PopupEditFolder {
+        id: popupFolderEdit
+        anchors {
+            left: parent.left
+            right: parent.right
+            top: infoBar.bottom
+            bottom: parent.bottom
+        }
+    }
+
+    // Popup
+    PopupMessage {
+        id: popupMessage
+        anchors {
+            left   : parent.left
+            right  : parent.right
+            top    : infoBar.bottom
+            bottom : parent.bottom
+        }
+
+        onClickedNo: popupMessage.hide()
+        onClickedOkay: popupMessage.hide()
+        onClickedCancel: popupMessage.hide()
+        onClickedYes: {
+            if (popupMessage.text == gui.areYouSureYouWantToQuit) Qt.quit()
+        }
+    }
+
+    // resize
+    MouseArea { // bottom
+        id: resizeBottom
+        property int diff: 0
+        anchors {
+            bottom : parent.bottom
+            left   : parent.left
+            right  : parent.right
+        }
+        cursorShape: Qt.SizeVerCursor
+        height: Style.main.fontSize
+        onPressed: {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            resizeBottom.diff = root.height
+            resizeBottom.diff -= globPos.y
+        }
+        onMouseYChanged : {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            root.height =  Math.max(root.minimumHeight, globPos.y + resizeBottom.diff)
+        }
+    }
+
+    MouseArea { // right
+        id: resizeRight
+        property int diff: 0
+        anchors {
+            top    : titleBar.bottom
+            bottom : parent.bottom
+            right  : parent.right
+        }
+        cursorShape: Qt.SizeHorCursor
+        width: Style.main.fontSize/2
+        onPressed: {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            resizeRight.diff = root.width
+            resizeRight.diff -= globPos.x
+        }
+        onMouseXChanged : {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            root.width =  Math.max(root.minimumWidth, globPos.x + resizeRight.diff)
+        }
+    }
+
+    function showAndRise(){
+        go.loadAccounts()
+        root.show()
+        root.raise()
+        if (!root.active) {
+            root.requestActivate()
+        }
+    }
+
+    // Toggle window
+    function toggle() {
+        go.loadAccounts()
+        if (root.visible) {
+            if (!root.active) {
+                root.raise()
+                root.requestActivate()
+            } else {
+                root.hide()
+            }
+        } else {
+            root.show()
+            root.raise()
+        }
+    }
+
+    onClosing : {
+        close.accepted=false
+        if (
+            (dialogImport.visible && dialogImport.currentIndex == 4 && go.progress!=1) ||
+            (dialogExport.visible && dialogExport.currentIndex == 2 && go.progress!=1)
+        ) {
+            popupMessage.buttonOkay   .visible = false
+            popupMessage.buttonYes    .visible = false
+            popupMessage.buttonQuit   .visible = true
+            popupMessage.buttonCancel .visible = true
+            popupMessage.show ( gui.areYouSureYouWantToQuit )
+            return
+        }
+
+        close.accepted=true
+        go.processFinished()
+    }
+}

internal/frontend/qml/ImportExportUI/OutputFormat.qml

@@ -0,0 +1,84 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Column {
+    spacing: Style.dialog.spacing
+    property string checkedText : group.checkedButton.text
+
+    Text {
+        id: formatLabel
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+            bold: true
+        }
+        color: Style.dialog.text
+        text: qsTr("Select format of exported email:")
+
+        InfoToolTip {
+            info: qsTr("MBOX exports one file for each folder", "todo") + "\n" + qsTr("EML exports one file for each email", "todo")
+            anchors {
+                left: parent.right
+                leftMargin: Style.dialog.spacing
+                verticalCenter: parent.verticalCenter
+            }
+        }
+    }
+
+    Row {
+        spacing : Style.main.leftMargin
+        ButtonGroup {
+            id: group
+        }
+
+        Repeater {
+            model: [ "MBOX", "EML" ]
+            delegate : RadioButton {
+                id: radioDelegate
+                checked: modelData=="MBOX"
+                width: 5*Style.dialog.fontSize // hack due to bold
+                text: modelData
+                ButtonGroup.group: group
+                spacing: Style.main.spacing
+                indicator: Text {
+                    text  : radioDelegate.checked ? Style.fa.check_circle : Style.fa.circle_o
+                    color : radioDelegate.checked ? Style.main.textBlue   : Style.main.textInactive
+                    font {
+                        pointSize: Style.dialog.iconSize * Style.pt
+                        family: Style.fontawesome.name
+                    }
+                    anchors.verticalCenter: parent.verticalCenter
+                }
+                contentItem: Text {
+                    text: radioDelegate.text
+                    color: Style.main.text
+                    font {
+                        pointSize: Style.dialog.fontSize * Style.pt
+                        bold: checked
+                    }
+                    horizontalAlignment : Text.AlignHCenter
+                    verticalAlignment   : Text.AlignVCenter
+                    leftPadding: Style.dialog.iconSize
+                }
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/PopupEditFolder.qml

@@ -0,0 +1,311 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// popup to edit folders or labels
+import QtQuick 2.8
+import QtQuick.Controls 2.1
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+
+Rectangle {
+    id: root
+    visible: false
+    color: "#aa223344"
+
+    property string folderType    : gui.enums.folderTypeFolder
+    property bool   isFolder      : folderType == gui.enums.folderTypeFolder
+    property bool   isNew         : currentId == ""
+    property bool   isCreateLater : currentId == "createLater" // NOTE: "createLater" is hack because folder id should be base64 string
+
+    property string currentName   : ""
+    property string currentId     : ""
+    property string currentColor  : ""
+
+    property string sourceID      : ""
+    property string selectedColor : colorList[0]
+
+    property color textColor : Style.main.background
+    property color backColor : Style.bubble.paneBackground
+
+    signal edited(string newName, string newColor)
+
+
+
+
+    property var colorList : [ "#7272a7", "#8989ac", "#cf5858", "#cf7e7e", "#c26cc7", "#c793ca", "#7569d1", "#9b94d1", "#69a9d1", "#a8c4d5", "#5ec7b7", "#97c9c1", "#72bb75", "#9db99f", "#c3d261", "#c6cd97", "#e6c04c", "#e7d292", "#e6984c", "#dfb286" ]
+
+    MouseArea { // prevent action below aka modal: true
+        anchors.fill: parent
+        hoverEnabled: true
+    }
+
+    Rectangle {
+        id:background
+
+        anchors {
+            fill: root
+            leftMargin: winMain.width/6
+            topMargin: winMain.height/6
+            rightMargin: anchors.leftMargin
+            bottomMargin: anchors.topMargin
+        }
+
+        color: backColor
+        radius: Style.errorDialog.radius
+    }
+
+
+    Column { // content
+        anchors {
+            top              : background.top
+            horizontalCenter : background.horizontalCenter
+        }
+
+        topPadding    : Style.main.topMargin
+        bottomPadding : topPadding
+        spacing       : (background.height - title.height - inputField.height - view.height - buttonRow.height - topPadding - bottomPadding) / children.length
+
+        Text {
+            id: title
+
+            font.pointSize: Style.dialog.titleSize * Style.pt
+            color: textColor
+
+            text: {
+                if ( root.isFolder  && root.isNew  ) return qsTr ( "Create new folder" )
+                if ( !root.isFolder && root.isNew  ) return qsTr ( "Create new label"  )
+                if ( root.isFolder  && !root.isNew ) return qsTr ( "Edit folder %1"    ) .arg( root.currentName )
+                if ( !root.isFolder && !root.isNew ) return qsTr ( "Edit label %1"     ) .arg( root.currentName )
+            }
+
+            width  : parent.width
+            elide  : Text.ElideRight
+
+            horizontalAlignment : Text.AlignHCenter
+
+            Rectangle {
+                anchors {
+                    top: parent.bottom
+                    topMargin: Style.dialog.spacing
+                    horizontalCenter: parent.horizontalCenter
+                }
+                color: textColor
+                height: Style.main.borderInput
+            }
+        }
+
+        TextField {
+            id: inputField
+
+            anchors {
+                horizontalCenter: parent.horizontalCenter
+            }
+
+            width          : parent.width
+            height         : Style.dialog.button
+            rightPadding   : Style.dialog.spacing
+            leftPadding    : height + rightPadding
+            bottomPadding  : rightPadding
+            topPadding     : rightPadding
+            selectByMouse  : true
+            color          : textColor
+            font.pointSize : Style.dialog.fontSize * Style.pt
+
+            background: Rectangle {
+                color: backColor
+                border {
+                    color: textColor
+                    width: Style.dialog.borderInput
+                }
+
+                radius : Style.dialog.radiusButton
+
+                Text {
+                    anchors {
+                        left: parent.left
+                        verticalCenter: parent.verticalCenter
+                    }
+
+                    font {
+                        family: Style.fontawesome.name
+                        pointSize: Style.dialog.titleSize * Style.pt
+                    }
+
+                    text  : folderType == gui.enums.folderTypeFolder ? Style.fa.folder : Style.fa.tag
+                    color : root.selectedColor
+                    width : parent.height
+                    horizontalAlignment: Text.AlignHCenter
+                }
+
+                Rectangle {
+                    anchors {
+                        left: parent.left
+                        top: parent.top
+                        leftMargin: parent.height
+                    }
+                    width: parent.border.width/2
+                    height: parent.height
+                }
+            }
+        }
+
+
+        GridView {
+            id: view
+
+            anchors {
+                horizontalCenter: parent.horizontalCenter
+            }
+
+            model      : colorList
+            cellWidth  : 2*Style.dialog.titleSize
+            cellHeight : cellWidth
+            width      : 10*cellWidth
+            height     : 2*cellHeight
+
+            delegate: Rectangle {
+                width: view.cellWidth*0.8
+                height: width
+                radius: width/2
+                color: modelData
+
+                border {
+                    color: indicator.visible ? textColor : modelData
+                    width: 2*Style.px
+                }
+
+                Text {
+                    id: indicator
+                    anchors.centerIn : parent
+                    text: Style.fa.check
+                    color: textColor
+                    font {
+                        family: Style.fontawesome.name
+                        pointSize: Style.dialog.titleSize * Style.pt
+                    }
+                    visible: modelData == root.selectedColor
+                }
+
+                MouseArea {
+                    anchors.fill: parent
+                    onClicked : {
+                        root.selectedColor = modelData
+                    }
+                }
+            }
+        }
+
+        Row {
+            id: buttonRow
+
+            anchors {
+                horizontalCenter: parent.horizontalCenter
+            }
+
+            spacing: Style.main.leftMargin
+
+            ButtonRounded {
+                text: "Cancel"
+                color_main : textColor
+                onClicked :{
+                    root.hide()
+                }
+            }
+
+            ButtonRounded {
+                text: "Okay"
+                color_main: Style.dialog.background
+                color_minor: Style.dialog.textBlue
+                isOpaque: true
+                onClicked :{
+                    root.okay()
+                }
+            }
+        }
+    }
+
+    function hide() {
+        root.visible=false
+        root.currentId = ""
+        root.currentName = ""
+        root.currentColor = ""
+        root.folderType = ""
+        root.sourceID = ""
+        inputField.text = ""
+    }
+
+    function show(currentName, currentId, currentColor, folderType, sourceID) {
+        root.currentId = currentId
+        root.currentName = currentName
+        root.currentColor = currentColor=="" ? go.leastUsedColor() : currentColor
+        root.selectedColor =  root.currentColor
+        root.folderType = folderType
+        root.sourceID = sourceID
+
+        inputField.text = currentName
+        root.visible=true
+        //console.log(title.text , root.currentName, root.currentId, root.currentColor, root.folderType, root.sourceID) 
+    }
+
+    function okay() {
+        // check inpupts
+        if (inputField.text == "") {
+            go.notifyError(gui.enums.errFillFolderName)
+            return
+        }
+        if (colorList.indexOf(root.selectedColor)<0) {
+            go.notifyError(gui.enums.errSelectFolderColor)
+            return
+        }
+        var isLabel = root.folderType == gui.enums.folderTypeLabel
+        if (!isLabel && !root.isFolder){
+            console.log("Unknown folder type: ", root.folderType)
+            go.notifyError(gui.enums.errUpdateLabelFailed)
+            root.hide()
+            return
+        }
+
+        if (winMain.dialogImport.address == "") {
+            console.log("Unknown address", winMain.dialogImport.address)
+            go.onNotifyError(gui.enums.errUpdateLabelFailed)
+            root.hide()
+        }
+
+        if (root.isCreateLater) {
+            root.edited(inputField.text, root.selectedColor)
+            root.hide()
+            return
+        }
+
+
+        // TODO send request (as timer)
+        if (root.isNew) {
+            var isOK = go.createLabelOrFolder(winMain.dialogImport.address, inputField.text, root.selectedColor, isLabel, root.sourceID)
+            if (isOK) {
+                root.hide()
+            }
+        } else {
+            // TODO: check there was some change
+            go.updateLabelOrFolder(winMain.dialogImport.address, root.currentId, inputField.text, root.selectedColor)
+        }
+
+        // waiting for finish
+        // TODO: waiting wheel of doom
+        // TODO: on close add source to sourceID
+    }
+}

internal/frontend/qml/ImportExportUI/SelectFolderMenu.qml

@@ -0,0 +1,339 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// This is global combo box which can be adjusted to choose folder target, folder label or global label
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+ComboBox {
+    id: root
+    //fixme rounded
+    height: Style.main.fontSize*2 //fixme
+    property string folderType: gui.enums.folderTypeFolder
+    property string sourceID
+    property var targets
+    property bool isFolderType: root.folderType == gui.enums.folderTypeFolder
+    property bool below: true
+
+    signal doNotImport()
+    signal importToFolder(string newTargetID)
+    signal addTargetLabel(string newTargetID)
+    signal removeTargetLabel(string newTargetID)
+
+    leftPadding: Style.dialog.spacing
+
+    onDownChanged : {
+        root.below = popup.y>0
+    }
+
+    contentItem : Text {
+        id: boxText
+        verticalAlignment: Text.AlignVCenter
+        font {
+            family: Style.fontawesome.name
+            pointSize : Style.dialog.fontSize * Style.pt
+            bold: root.down
+        }
+        elide: Text.ElideRight
+        textFormat: Text.StyledText
+
+        text : root.displayText
+        color: !root.enabled ? Style.main.textDisabled : ( root.down ? Style.main.background : Style.main.text )
+    }
+
+    displayText: {
+        if (view.currentIndex >= 0) {
+            if (!root.isFolderType) return Style.fa.tags + " " + qsTr("Add/Remove labels")
+
+            var tgtName = view.currentItem.folderName
+            var tgtIcon = view.currentItem.folderIcon
+            var tgtColor = view.currentItem.folderColor
+
+            if (tgtIcon != Style.fa.folder_open) {
+                return tgtIcon + " " + tgtName
+            }
+
+            return '<font color="'+tgtColor+'">'+ tgtIcon + "</font> " + tgtName
+        }
+        if (root.isFolderType) return qsTr("No folder selected")
+        return qsTr("No labels selected")
+    }
+
+
+    background : RoundedRectangle {
+        fillColor         : root.down ? Style.main.textBlue : Style.transparent
+        strokeColor       : root.down ? fillColor : Style.main.line
+        radiusTopLeft     : root.down && !root.below ? 0 : Style.dialog.radiusButton
+        radiusBottomLeft  : root.down && root.below ? 0 : Style.dialog.radiusButton
+        radiusTopRight    : radiusTopLeft
+        radiusBottomRight : radiusBottomLeft
+
+        MouseArea {
+            anchors.fill: parent
+            onClicked : {
+                if (root.down) root.popup.close()
+                else root.popup.open()
+            }
+        }
+    }
+
+    indicator : Text {
+        text: (root.down && root.below) || (!root.down && !root.below) ? Style.fa.chevron_up : Style.fa.chevron_down
+        anchors {
+            right: parent.right
+            verticalCenter: parent.verticalCenter
+            rightMargin: Style.dialog.spacing
+        }
+        font {
+            family : Style.fontawesome.name
+            pointSize : Style.dialog.fontSize * Style.pt
+        }
+        color: root.enabled && !root.down ? Style.main.textBlue : root.contentItem.color
+    }
+
+    // Popup row
+    delegate: Rectangle {
+        id: thisDelegate
+
+        height : Style.main.fontSize * 2
+        width  : selectNone.width
+
+        property bool isHovered: area.containsMouse
+
+        color: isHovered ? root.popup.hoverColor : root.popup.backColor
+
+        property bool isSelected : isActive
+        property string folderName: name
+        property string folderIcon: gui.folderIcon(name,type)
+        property string folderColor: (type == gui.enums.folderTypeLabel || type == gui.enums.folderTypeFolder) ? iconColor : root.popup.textColor
+
+        Text {
+            id: targetIcon
+            text: thisDelegate.folderIcon
+            color : thisDelegate.folderColor
+            anchors {
+                verticalCenter: parent.verticalCenter
+                left: parent.left
+                leftMargin: root.leftPadding
+            }
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Text {
+            id: targetName
+
+
+            anchors {
+                verticalCenter: parent.verticalCenter
+                left: targetIcon.right
+                right: parent.right
+                leftMargin: Style.dialog.spacing
+                rightMargin: Style.dialog.spacing
+            }
+
+            text: thisDelegate.folderName
+            color : root.popup.textColor
+            elide: Text.ElideRight
+
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Text {
+            id: targetIndicator
+            anchors {
+                right: parent.right
+                verticalCenter: parent.verticalCenter
+            }
+
+            text    : thisDelegate.isSelected ? Style.fa.check_square : Style.fa.square_o
+            visible : thisDelegate.isSelected || !root.isFolderType
+            color   : root.popup.textColor
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Rectangle {
+            id: line
+            anchors {
+                bottom : parent.bottom
+                left   : parent.left
+                right  : parent.right
+            }
+            height : Style.main.lineWidth
+            color  : Style.main.line
+        }
+
+        MouseArea {
+            id: area
+            anchors.fill: parent
+
+            onClicked: {
+                //console.log(" click delegate")
+                if (root.isFolderType) { // don't update if selected
+                    root.popup.close()
+                    if (!isActive) {
+                        root.importToFolder(mboxID)
+                    }
+                } else {
+                    if (isActive) {
+                        root.removeTargetLabel(mboxID)
+                    } else  {
+                        root.addTargetLabel(mboxID)
+                    }
+                }
+            }
+            hoverEnabled: true
+        }
+    }
+
+    popup : Popup {
+        y: root.height
+        width: root.width
+        modal: true
+        closePolicy: Popup.CloseOnPressOutside | Popup.CloseOnEscape
+        padding: Style.dialog.spacing
+
+        property var textColor  : Style.main.background
+        property var backColor  : Style.main.text
+        property var hoverColor : Style.main.textBlue
+
+        contentItem : Column {
+            // header
+            Rectangle {
+                id: selectNone
+                width: root.popup.width - 2*root.popup.padding
+                //height: root.isFolderType ? 2* Style.main.fontSize : 0
+                height: 2*Style.main.fontSize
+                color: area.containsMouse ? root.popup.hoverColor : root.popup.backColor
+                visible : root.isFolderType
+
+                Text {
+                    anchors {
+                        left           : parent.left
+                        leftMargin     : Style.dialog.spacing
+                        verticalCenter : parent.verticalCenter
+                    }
+                    text: root.isFolderType ? qsTr("Do not import") : ""
+                    color: root.popup.textColor
+                    font {
+                        pointSize: Style.dialog.fontSize * Style.pt
+                        bold: true
+                    }
+                }
+
+                Rectangle {
+                    id: line
+                    anchors {
+                        bottom : parent.bottom
+                        left   : parent.left
+                        right  : parent.right
+                    }
+                    height : Style.dialog.borderInput
+                    color  : Style.main.line
+                }
+
+                MouseArea {
+                    id: area
+                    anchors.fill: parent
+                    onClicked: {
+                        //console.log(" click no set")
+                        root.doNotImport()
+                        root.popup.close()
+                    }
+                    hoverEnabled: true
+                }
+            }
+
+            // scroll area
+            Rectangle {
+                width: selectNone.width
+                height: winMain.height/4
+                color: root.popup.backColor
+
+                ListView {
+                    id: view
+
+                    clip         : true
+                    anchors.fill : parent
+                    model        : root.targets
+                    delegate     : root.delegate
+
+                    currentIndex: view.model.selectedIndex
+                }
+            }
+
+            // footer
+            Rectangle {
+                id: addFolderOrLabel
+                width: selectNone.width
+                height: addButton.height + 3*Style.dialog.spacing
+                color: root.popup.backColor
+
+                Rectangle {
+                    anchors {
+                        top   : parent.top
+                        left  : parent.left
+                        right : parent.right
+                    }
+                    height : Style.dialog.borderInput
+                    color  : Style.main.line
+                }
+
+                ButtonRounded {
+                    id: addButton
+                    anchors.centerIn: addFolderOrLabel
+                    width: parent.width * 0.681
+
+                    fa_icon    : Style.fa.plus_circle
+                    text       : root.isFolderType ? qsTr("Create new folder") : qsTr("Create new label")
+                    color_main : root.popup.textColor
+                }
+
+                MouseArea {
+                    anchors.fill : parent
+
+                    onClicked  : {
+                        //console.log("click", addButton.text)
+                        var newName = name
+                        winMain.popupFolderEdit.show(newName, "", "", root.folderType, sourceID)
+                        root.popup.close()
+                    }
+                }
+            }
+        }
+
+        background : RoundedRectangle {
+            strokeColor       : root.popup.backColor
+            fillColor         : root.popup.backColor
+            radiusTopLeft     : root.below  ? 0 : Style.dialog.radiusButton
+            radiusBottomLeft  : !root.below ? 0 : Style.dialog.radiusButton
+            radiusTopRight    : radiusTopLeft
+            radiusBottomRight : radiusBottomLeft
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/SelectLabelsMenu.qml

@@ -0,0 +1,29 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+SelectFolderMenu {
+    id: root
+    folderType: gui.enums.folderTypeLabel
+}
+
+

internal/frontend/qml/ImportExportUI/SettingsView.qml

@@ -0,0 +1,148 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List the settings
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+
+    // must have wrapper
+    Rectangle {
+        id: wrapper
+        anchors.centerIn: parent
+        width: parent.width
+        height: parent.height
+        color: Style.main.background
+
+        // content
+        Column {
+            anchors.left : parent.left
+
+            ButtonIconText {
+                id: cacheKeychain
+                text: qsTr("Clear Keychain")
+                leftIcon.text  : Style.fa.chain_broken
+                rightIcon {
+                    text : qsTr("Clear")
+                    color: Style.main.text
+                    font {
+                        pointSize : Style.settings.fontSize * Style.pt
+                        underline : true
+                    }
+                }
+                onClicked: {
+                    dialogGlobal.state="clearChain"
+                    dialogGlobal.show()
+                }
+            }
+
+            ButtonIconText {
+                id: logs
+                anchors.left: parent.left
+                text: qsTr("Logs")
+                leftIcon.text  : Style.fa.align_justify
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: go.openLogs()
+            }
+
+            ButtonIconText {
+                id: bugreport
+                anchors.left: parent.left
+                text: qsTr("Report Bug")
+                leftIcon.text  : Style.fa.bug
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: bugreportWin.show()
+            }
+
+            /*
+
+             ButtonIconText {
+                 id: cacheClear
+                 text: qsTr("Clear Cache")
+                 leftIcon.text  : Style.fa.times
+                 rightIcon {
+                     text : qsTr("Clear")
+                     color: Style.main.text
+                     font {
+                         pointSize : Style.settings.fontSize * Style.pt
+                         underline : true
+                     }
+                 }
+                 onClicked: {
+                     dialogGlobal.state="clearCache"
+                     dialogGlobal.show()
+                 }
+             }
+
+
+             ButtonIconText {
+                 id: autoStart
+                 text: qsTr("Automatically Start Bridge")
+                 leftIcon.text  : Style.fa.rocket
+                 rightIcon {
+                     font.pointSize : Style.settings.toggleSize * Style.pt
+                     text  : go.isAutoStart!=0 ? Style.fa.toggle_on  : Style.fa.toggle_off
+                     color : go.isAutoStart!=0 ? Style.main.textBlue : Style.main.textDisabled
+                 }
+                 onClicked: {
+                     go.toggleAutoStart()
+                 }
+             }
+
+             ButtonIconText {
+                 id: advancedSettings
+                 property bool isAdvanced : !go.isDefaultPort
+                 text: qsTr("Advanced settings")
+                 leftIcon.text  : Style.fa.cogs
+                 rightIcon {
+                     font.pointSize : Style.settings.toggleSize * Style.pt
+                     text  : isAdvanced!=0 ? Style.fa.chevron_circle_up  : Style.fa.chevron_circle_right
+                     color : isAdvanced!=0 ? Style.main.textDisabled : Style.main.textBlue
+                 }
+                 onClicked: {
+                     isAdvanced = !isAdvanced
+                 }
+             }
+
+             ButtonIconText {
+                 id: changePort
+                 visible: advancedSettings.isAdvanced
+                 text: qsTr("Change SMTP/IMAP Ports")
+                 leftIcon.text  : Style.fa.plug
+                 rightIcon {
+                     text : qsTr("Change")
+                     color: Style.main.text
+                     font {
+                         pointSize : Style.settings.fontSize * Style.pt
+                         underline : true
+                     }
+                 }
+                 onClicked: {
+                     dialogChangePort.show()
+                 }
+             }
+             */
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/VersionInfo.qml

@@ -0,0 +1,125 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// credits
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+    Rectangle {
+        id: wrapper
+        anchors.centerIn: parent
+        width: 2*Style.main.width/3
+        height: Style.main.height - 6*Style.dialog.titleSize
+        color: "transparent"
+
+        Flickable {
+            anchors.fill       : wrapper
+            contentWidth       : wrapper.width
+            contentHeight      : content.height
+            flickableDirection : Flickable.VerticalFlick
+            clip               : true
+
+
+            Column {
+                id: content
+                anchors.top: parent.top
+                anchors.horizontalCenter: parent.horizontalCenter
+                width: wrapper.width
+                spacing: 5
+
+                Text {
+                    visible: go.changelog != ""
+                    anchors {
+                        left: parent.left
+                    }
+                    font.bold: true
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    color: Style.main.text
+                    text: qsTr("Release notes:")
+                }
+
+                Text {
+                    anchors {
+                        left: parent.left
+                        leftMargin: Style.main.leftMargin
+                    }
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    width: wrapper.width - anchors.leftMargin
+                    wrapMode: Text.Wrap
+                    color: Style.main.text
+                    text: go.changelog
+                }
+
+                Text {
+                    visible: go.bugfixes != ""
+                    anchors {
+                        left: parent.left
+                    }
+                    font.bold: true
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    color: Style.main.text
+                    text: qsTr("Fixed bugs:")
+                }
+
+                Repeater {
+                    anchors.fill: parent
+                    model: go.bugfixes.split(";")
+
+                    Text {
+                        visible: go.bugfixes!=""
+                        anchors {
+                            left: parent.left
+                            leftMargin: Style.main.leftMargin
+                        }
+                        font.pointSize: Style.main.fontSize * Style.pt
+                        width: wrapper.width - anchors.leftMargin
+                        wrapMode: Text.Wrap
+                        color: Style.main.text
+                        text: modelData
+                    }
+                }
+
+                Rectangle{id:spacer; color:"transparent"; width:10; height: buttonClose.height}
+
+
+                ButtonRounded {
+                    id: buttonClose
+                    anchors.horizontalCenter: content.horizontalCenter
+                    text: "Close"
+                    onClicked: {
+                        root.parent.hide()
+                    }
+                }
+
+
+                AccessibleSelectableText {
+                    anchors.horizontalCenter: content.horizontalCenter
+                    font {
+                        pointSize : Style.main.fontSize * Style.pt
+                    }
+                    color: Style.main.textDisabled
+                    text: "\n Current: "+go.fullversion
+                }
+            }
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/qmldir

@@ -0,0 +1,31 @@
+module ImportExportUI
+AccountDelegate      1.0 AccountDelegate.qml
+Credits              1.0 Credits.qml
+DateBox              1.0 DateBox.qml
+DateInput            1.0 DateInput.qml
+DateRangeMenu        1.0 DateRangeMenu.qml
+DateRange            1.0 DateRange.qml
+DateRangeFunctions   1.0 DateRangeFunctions.qml
+DialogExport         1.0 DialogExport.qml
+DialogImport         1.0 DialogImport.qml
+DialogYesNo          1.0 DialogYesNo.qml
+ExportStructure      1.0 ExportStructure.qml
+FilterStructure      1.0 FilterStructure.qml
+FolderRowButton      1.0 FolderRowButton.qml
+HelpView             1.0 HelpView.qml
+IEStyle              1.0 IEStyle.qml
+ImportDelegate       1.0 ImportDelegate.qml
+ImportSourceButton   1.0 ImportSourceButton.qml
+ImportStructure      1.0 ImportStructure.qml
+ImportReport         1.0 ImportReport.qml
+ImportReportCell     1.0 ImportReportCell.qml
+InlineDateRange      1.0 InlineDateRange.qml
+InlineLabelSelect    1.0 InlineLabelSelect.qml
+LabelIconList        1.0 LabelIconList.qml
+MainWindow           1.0 MainWindow.qml
+OutputFormat         1.0 OutputFormat.qml
+PopupEditFolder      1.0 PopupEditFolder.qml
+SelectFolderMenu     1.0 SelectFolderMenu.qml
+SelectLabelsMenu     1.0 SelectLabelsMenu.qml
+SettingsView         1.0 SettingsView.qml
+VersionInfo          1.0 VersionInfo.qml

internal/frontend/qml/ProtonUI/AccountView.qml

@@ -87,7 +87,7 @@ Item {
                 Text { // Status
                     anchors {
                         left           : parent.left
-                        leftMargin     : Style.accounts.leftMargin2
+                        leftMargin     : viewContent.width/2
                         verticalCenter : parent.verticalCenter
                     }
                     visible: root.numAccounts!=0
@@ -99,7 +99,7 @@ Item {
                 Text { // Actions
                     anchors {
                         left           : parent.left
-                        leftMargin     : Style.accounts.leftMargin3
+                        leftMargin     : 5.5*viewContent.width/8
                         verticalCenter : parent.verticalCenter
                     }
                     visible: root.numAccounts!=0

internal/frontend/qml/ProtonUI/BugReportWindow.qml

@@ -327,6 +327,7 @@ Window {
 
     function show() {
         prefill()
+        description.focus=true
         root.visible=true
     }
 

internal/frontend/qml/ProtonUI/CheckBoxLabel.qml

@@ -30,10 +30,12 @@ CheckBox {
     property color uncheckedColor   : Style.main.textInactive
     property string checkedSymbol   : Style.fa.check_square_o
     property string uncheckedSymbol : Style.fa.square_o
+    property alias symbolPointSize  : symbol.font.pointSize
     background: Rectangle {
         color: Style.transparent
     }
     indicator: Text {
+        id: symbol
         text  : root.checked ? root.checkedSymbol : root.uncheckedSymbol
         color : root.checked ? root.checkedColor  : root.uncheckedColor
         font {

internal/frontend/qml/ProtonUI/DialogUpdate.qml

@@ -123,12 +123,12 @@ Dialog {
                 wrapMode: Text.Wrap
                 text: {
                     switch (go.progressDescription) {
-                        case 1: return qsTr("Checking the current version.")
-                        case 2: return qsTr("Downloading the update files.")
-                        case 3: return qsTr("Verifying the update files.")
-                        case 4: return qsTr("Unpacking the update files.")
-                        case 5: return qsTr("Starting the update.")
-                        case 6: return qsTr("Quitting the application.")
+                        case "1": return qsTr("Checking the current version.")
+                        case "2": return qsTr("Downloading the update files.")
+                        case "3": return qsTr("Verifying the update files.")
+                        case "4": return qsTr("Unpacking the update files.")
+                        case "5": return qsTr("Starting the update.")
+                        case "6": return qsTr("Quitting the application.")
                         default: return ""
                     }
                 }
@@ -220,7 +220,7 @@ Dialog {
     function clear() {
         root.hasError = false
         go.progress = 0.0
-        go.progressDescription = 0
+        go.progressDescription = "0"
     }
 
     function finished(hasError) {

internal/frontend/qml/ProtonUI/FileAndFolderSelect.qml

@@ -60,7 +60,7 @@ Row {
 
     FileDialog {
         id: pathDialog
-        title: root.title + ":"
+        title: root.title
         folder: shortcuts.home
         onAccepted: sanitizePath(pathDialog.fileUrl.toString())
         selectFolder: true

internal/frontend/qml/ProtonUI/InputField.qml

@@ -138,6 +138,11 @@ Column {
         }
     }
 
+    function clear() {
+        inputField.text = ""
+        rightIcon = ""
+    }
+
     function checkNonEmpty() {
         if (inputField.text == "") {
             rightIcon = Style.fa.exclamation_triangle
@@ -154,6 +159,17 @@ Column {
         if (root.isPassword) inputField.echoMode = TextInput.Password
     }
 
+    function checkIsANumber(){
+        if (/^\d+$/.test(inputField.text)) {
+            rightIcon = Style.fa.check_circle
+            return true
+        }
+        rightIcon = Style.fa.exclamation_triangle
+        root.placeholderText = ""
+        inputField.focus = true
+        return false
+    }
+
     function forceFocus() {
         inputField.forceActiveFocus()
     }

internal/frontend/qml/ProtonUI/PopupMessage.qml

@@ -23,9 +23,26 @@ import ProtonUI 1.0
 Rectangle {
     id: root
     color: Style.transparent
-    property alias text: message.text
+    property alias text         : message.text
+    property alias checkbox     : checkbox
+    property alias buttonQuit   : buttonQuit
+    property alias buttonOkay   : buttonOkay
+    property alias buttonYes    : buttonYes
+    property alias buttonNo     : buttonNo
+    property alias buttonRetry  : buttonRetry
+    property alias buttonSkip   : buttonSkip
+    property alias buttonCancel : buttonCancel
+    property alias msgWidth     : backgroundInp.width
+    property string msgID       : ""
     visible: false
 
+    signal clickedOkay()
+    signal clickedYes()
+    signal clickedNo()
+    signal clickedRetry()
+    signal clickedSkip()
+    signal clickedCancel()
+
     MouseArea { // prevent action below
         anchors.fill: parent
         hoverEnabled: true
@@ -58,14 +75,29 @@ Rectangle {
                 wrapMode: Text.Wrap
             }
 
-            ButtonRounded {
-                text        : qsTr("Okay", "todo")
-                isOpaque    : true
-                color_main  : Style.dialog.background
-                color_minor : Style.dialog.textBlue
-                onClicked   : root.hide()
+            CheckBoxLabel {
+                id: checkbox
+                text: ""
+                checked: false
+                visible: (text != "")
+                textColor : Style.errorDialog.text
+                checkedColor: Style.errorDialog.text
+                uncheckedColor: Style.errorDialog.text
                 anchors.horizontalCenter : parent.horizontalCenter
             }
+
+            Row {
+                spacing: Style.dialog.spacing
+                anchors.horizontalCenter : parent.horizontalCenter
+
+                ButtonRounded { id : buttonQuit   ; text : qsTr ( "Stop & quit", ""          )  ; onClicked : root.clickedYes    (  )  ; visible : false ; isOpaque : true  ; color_main : Style.errorDialog.text ; color_minor : Style.dialog.textBlue ; }
+                ButtonRounded { id : buttonNo     ; text : qsTr ( "No"     , "Button No"     )  ; onClicked : root.clickedNo     (  )  ; visible : false ; isOpaque : false ; color_main : Style.errorDialog.text ; color_minor : Style.transparent     ; }
+                ButtonRounded { id : buttonYes    ; text : qsTr ( "Yes"    , "Button Yes"    )  ; onClicked : root.clickedYes    (  )  ; visible : false ; isOpaque : true  ; color_main : Style.errorDialog.text ; color_minor : Style.dialog.textBlue ; }
+                ButtonRounded { id : buttonRetry  ; text : qsTr ( "Retry"  , "Button Retry"  )  ; onClicked : root.clickedRetry  (  )  ; visible : false ; isOpaque : false ; color_main : Style.errorDialog.text ; color_minor : Style.transparent     ; }
+                ButtonRounded { id : buttonSkip   ; text : qsTr ( "Skip"   , "Button Skip"   )  ; onClicked : root.clickedSkip   (  )  ; visible : false ; isOpaque : false ; color_main : Style.errorDialog.text ; color_minor : Style.transparent     ; }
+                ButtonRounded { id : buttonCancel ; text : qsTr ( "Cancel" , "Button Cancel" )  ; onClicked : root.clickedCancel (  )  ; visible : false ; isOpaque : true  ; color_main : Style.errorDialog.text ; color_minor : Style.dialog.textBlue ; }
+                ButtonRounded { id : buttonOkay   ; text : qsTr ( "Okay"   , "Button Okay"   )  ; onClicked : root.clickedOkay   (  )  ; visible : true  ; isOpaque : true  ; color_main : Style.errorDialog.text ; color_minor : Style.dialog.textBlue ; }
+            }
         }
     }
 
@@ -75,7 +107,16 @@ Rectangle {
     }
 
     function hide() {
-        root.state = "Okay"
         root.visible=false
+
+        root     .text = ""
+        checkbox .text = ""
+
+        buttonNo     .visible = false
+        buttonYes    .visible = false
+        buttonRetry  .visible = false
+        buttonSkip   .visible = false
+        buttonCancel .visible = false
+        buttonOkay   .visible = true
     }
 }

internal/frontend/qml/ProtonUI/RoundedRectangle.qml

@@ -0,0 +1,115 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+import QtQuick 2.8
+import ProtonUI 1.0
+
+
+Rectangle {
+    id: root
+
+    color: Style.transparent
+
+    property color fillColor        : Style.main.background
+    property color strokeColor      : Style.main.line
+    property real strokeWidth       : Style.dialog.borderInput
+    property real radiusTopLeft     : Style.dialog.radiusButton
+    property real radiusBottomLeft  : Style.dialog.radiusButton
+    property real radiusTopRight    : Style.dialog.radiusButton
+    property real radiusBottomRight : Style.dialog.radiusButton
+
+    function paint() {
+        canvas.requestPaint()
+    }
+
+    onFillColorChanged         : root.paint()
+    onStrokeColorChanged       : root.paint()
+    onStrokeWidthChanged       : root.paint()
+    onRadiusTopLeftChanged     : root.paint()
+    onRadiusBottomLeftChanged  : root.paint()
+    onRadiusTopRightChanged    : root.paint()
+    onRadiusBottomRightChanged : root.paint()
+
+
+    Canvas {
+        id: canvas
+        anchors.fill: root
+
+        onPaint: {
+            var ctx = getContext("2d")
+            ctx.clearRect(0, 0, canvas.width, canvas.height);
+            ctx.fillStyle   = root.fillColor
+            ctx.strokeStyle = root.strokeColor
+            ctx.lineWidth   = root.strokeWidth
+            var dimensions = {
+                x: ctx.lineWidth,
+                y: ctx.lineWidth,
+                w: canvas.width-2*ctx.lineWidth,
+                h: canvas.height-2*ctx.lineWidth,
+            }
+            var radius = {
+                tl: root.radiusTopLeft,
+                tr: root.radiusTopRight,
+                bl: root.radiusBottomLeft,
+                br: root.radiusBottomRight,
+            }
+
+            root.roundRect(
+                ctx,
+                dimensions,
+                radius, true, true
+            )
+        }
+    }
+
+    // adapted from: https://stackoverflow.com/questions/1255512/how-to-draw-a-rounded-rectangle-on-html-canvas/3368118#3368118
+    function roundRect(ctx, dim, radius, fill, stroke) {
+        if (typeof stroke == 'undefined') {
+            stroke = true;
+        }
+        if (typeof radius === 'undefined') {
+            radius = 5;
+        }
+        if (typeof radius === 'number') {
+            radius = {tl: radius, tr: radius, br: radius, bl: radius};
+        } else {
+            var defaultRadius = {tl: 0, tr: 0, br: 0, bl: 0};
+            for (var side in defaultRadius) {
+                radius[side] = radius[side] || defaultRadius[side];
+            }
+        }
+        ctx.beginPath();
+        ctx.moveTo(dim.x + radius.tl, dim.y);
+        ctx.lineTo(dim.x + dim.w - radius.tr, dim.y);
+        ctx.quadraticCurveTo(dim.x + dim.w, dim.y, dim.x + dim.w, dim.y + radius.tr);
+        ctx.lineTo(dim.x + dim.w, dim.y + dim.h - radius.br);
+        ctx.quadraticCurveTo(dim.x + dim.w, dim.y + dim.h, dim.x + dim.w - radius.br, dim.y + dim.h);
+        ctx.lineTo(dim.x + radius.bl, dim.y + dim.h);
+        ctx.quadraticCurveTo(dim.x, dim.y + dim.h, dim.x, dim.y + dim.h - radius.bl);
+        ctx.lineTo(dim.x, dim.y + radius.tl);
+        ctx.quadraticCurveTo(dim.x, dim.y, dim.x + radius.tl, dim.y);
+        ctx.closePath();
+        if (fill) {
+            ctx.fill();
+        }
+        if (stroke) {
+            ctx.stroke();
+        }
+    }
+
+    Component.onCompleted: root.paint()
+}

internal/frontend/qml/ProtonUI/Style.qml

@@ -221,6 +221,31 @@ QtObject {
         property real  leftMargin3        : 30 * px
     }
 
+    property QtObject importing : QtObject {
+        property color rowBackground : dialog.background
+        property color rowLine       : dialog.line
+    }
+
+    property QtObject dropDownLight: QtObject {
+        property color background : dialog.background
+        property color text       : dialog.text
+        property color inactive   : dialog.line
+        property color highlight  : dialog.textBlue
+        property color separator  : dialog.line
+        property color line       : dialog.line
+        property bool  labelBold  : true
+    }
+
+    property QtObject dropDownDark : QtObject {
+        property color background : dialog.text
+        property color text       : dialog.background
+        property color inactive   : dialog.line
+        property color highlight  : dialog.textBlue
+        property color separator  : dialog.line
+        property color line       : dialog.line
+        property bool  labelBold  : true
+    }
+
     property int okInfoBar         : 0
     property int warnInfoBar       : 1
     property int warnBubbleMessage : 2

internal/frontend/qml/ProtonUI/WindowTitleBar.qml

@@ -23,7 +23,9 @@ import ProtonUI 1.0
 
 Rectangle {
     id: root
-    height: root.isDarwin ? Style.titleMacOS.height : Style.title.height
+    height: visible ? (
+        root.isDarwin ? Style.titleMacOS.height : Style.title.height
+    ) : 0
     color: "transparent"
     property bool isDarwin : (go.goos == "darwin")
     property QtObject window

internal/frontend/qml/ProtonUI/qmldir

@@ -23,6 +23,7 @@ InputField                   1.0 InputField.qml
 InstanceExistsWindow         1.0 InstanceExistsWindow.qml
 LogoHeader                   1.0 LogoHeader.qml
 PopupMessage                 1.0 PopupMessage.qml
+RoundedRectangle             1.0 RoundedRectangle.qml
 TabButton                    1.0 TabButton.qml
 TabLabels                    1.0 TabLabels.qml
 TextLabel                    1.0 TextLabel.qml

internal/frontend/qt-common/Makefile.local

@@ -0,0 +1,6 @@
+clean:
+	rm -f moc.cpp
+	rm -f moc.go
+	rm -f moc.h
+	rm -f moc_cgo*.go
+	rm -f moc_moc.h

internal/frontend/qt-common/account_model.go

@@ -0,0 +1,236 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtcommon
+
+import (
+	"fmt"
+	"github.com/therecipe/qt/core"
+)
+
+// AccountInfo is an element of model. It contains all data for one account and
+// it's aliases
+type AccountInfo struct {
+	core.QObject
+
+	_ string `property:"account"`
+	_ string `property:"userID"`
+	_ string `property:"status"`
+	_ string `property:"hostname"`
+	_ string `property:"password"`
+	_ string `property:"security"`
+	_ int    `property:"portSMTP"`
+	_ int    `property:"portIMAP"`
+	_ string `property:"aliases"`
+	_ bool   `property:"isExpanded"`
+	_ bool   `property:"isCombinedAddressMode"`
+}
+
+// Constants for AccountsModel property map
+const (
+	Account = int(core.Qt__UserRole) + 1<<iota
+	UserID
+	Status
+	Hostname
+	Password
+	Security
+	PortIMAP
+	PortSMTP
+	Aliases
+	IsExpanded
+	IsCombinedAddressMode
+)
+
+// Registration of new metatype before creating instance
+// NOTE: check it is run once per program. write a log
+func init() {
+	AccountInfo_QRegisterMetaType()
+}
+
+// AccountModel for providing container of accounts information to QML.
+// QML ListView connects the model from Go and it shows item (accounts) information.
+// Copied and edited from `github.com/therecipe/qt/internal/examples/sailfish/listview`.
+type AccountsModel struct {
+	core.QAbstractListModel
+
+	// QtObject Constructor
+	_ func() `constructor:"init"`
+
+	// List of item properties.
+	// All available item properties are inside the map.
+	_ map[int]*core.QByteArray `property:"roles"`
+
+	// The data storage.
+	// The slice with all accounts. It is not accessed directly but using `data(index,role)`.
+	_ []*AccountInfo `property:"accounts"`
+
+	// Method for adding account.
+	_ func(*AccountInfo) `slot:"addAccount"`
+
+	// Method for retrieving account.
+	_ func(row int) *AccountInfo `slot:"get"`
+
+	// Method for login/logout the account.
+	_ func(row int) `slot:"toggleIsAvailable"`
+
+	// Method for removing account from list.
+	_ func(row int) `slot:"removeAccount"`
+
+	_ int `property:"count"`
+}
+
+// init is called by C constructor. It creates the map for item properties and
+// connects the methods.
+func (s *AccountsModel) init() {
+	s.SetRoles(map[int]*core.QByteArray{
+		Account:               NewQByteArrayFromString("account"),
+		UserID:                NewQByteArrayFromString("userID"),
+		Status:                NewQByteArrayFromString("status"),
+		Hostname:              NewQByteArrayFromString("hostname"),
+		Password:              NewQByteArrayFromString("password"),
+		Security:              NewQByteArrayFromString("security"),
+		PortIMAP:              NewQByteArrayFromString("portIMAP"),
+		PortSMTP:              NewQByteArrayFromString("portSMTP"),
+		Aliases:               NewQByteArrayFromString("aliases"),
+		IsExpanded:            NewQByteArrayFromString("isExpanded"),
+		IsCombinedAddressMode: NewQByteArrayFromString("isCombinedAddressMode"),
+	})
+	// Basic QAbstractListModel methods.
+	s.ConnectData(s.data)
+	s.ConnectRowCount(s.rowCount)
+	s.ConnectColumnCount(s.columnCount)
+	s.ConnectRoleNames(s.roleNames)
+	// Custom AccountModel methods.
+	s.ConnectGet(s.get)
+	s.ConnectAddAccount(s.addAccount)
+	s.ConnectToggleIsAvailable(s.toggleIsAvailable)
+	s.ConnectRemoveAccount(s.removeAccount)
+}
+
+// get returns account info pointer or create new empy if index is out of
+// range.
+func (s *AccountsModel) get(index int) *AccountInfo {
+	if index < 0 || index >= len(s.Accounts()) {
+		return NewAccountInfo(nil)
+	}
+	return s.Accounts()[index]
+}
+
+// data return value for index and property
+func (s *AccountsModel) data(index *core.QModelIndex, property int) *core.QVariant {
+	if !index.IsValid() {
+		return core.NewQVariant()
+	}
+
+	if index.Row() >= len(s.Accounts()) {
+		return core.NewQVariant()
+	}
+
+	var accountInfo = s.Accounts()[index.Row()]
+
+	switch property {
+	case Account:
+		return NewQVariantString(accountInfo.Account())
+	case UserID:
+		return NewQVariantString(accountInfo.UserID())
+	case Status:
+		return NewQVariantString(accountInfo.Status())
+	case Hostname:
+		return NewQVariantString(accountInfo.Hostname())
+	case Password:
+		return NewQVariantString(accountInfo.Password())
+	case Security:
+		return NewQVariantString(accountInfo.Security())
+	case PortIMAP:
+		return NewQVariantInt(accountInfo.PortIMAP())
+	case PortSMTP:
+		return NewQVariantInt(accountInfo.PortSMTP())
+	case Aliases:
+		return NewQVariantString(accountInfo.Aliases())
+	case IsExpanded:
+		return NewQVariantBool(accountInfo.IsExpanded())
+	case IsCombinedAddressMode:
+		return NewQVariantBool(accountInfo.IsCombinedAddressMode())
+	default:
+		return core.NewQVariant()
+	}
+}
+
+// rowCount returns the dimension of model: number of rows is equivalent to number of items in list.
+func (s *AccountsModel) rowCount(parent *core.QModelIndex) int {
+	return len(s.Accounts())
+}
+
+// columnCount returns the dimension of model: AccountsModel has only one column.
+func (s *AccountsModel) columnCount(parent *core.QModelIndex) int {
+	return 1
+}
+
+// roleNames returns the names of available item properties.
+func (s *AccountsModel) roleNames() map[int]*core.QByteArray {
+	return s.Roles()
+}
+
+// addAccount is connected to the addAccount slot.
+func (s *AccountsModel) addAccount(accountInfo *AccountInfo) {
+	s.BeginInsertRows(core.NewQModelIndex(), len(s.Accounts()), len(s.Accounts()))
+	s.SetAccounts(append(s.Accounts(), accountInfo))
+	s.SetCount(len(s.Accounts()))
+	s.EndInsertRows()
+}
+
+// toggleIsAvailable is connected to toggleIsAvailable slot.
+func (s *AccountsModel) toggleIsAvailable(row int) {
+	var accountInfo = s.Accounts()[row]
+	currentStatus := accountInfo.Status()
+	if currentStatus == "active" {
+		accountInfo.SetStatus("disabled")
+	} else if currentStatus == "disabled" {
+		accountInfo.SetStatus("active")
+	} else {
+		accountInfo.SetStatus("error")
+	}
+	var pIndex = s.Index(row, 0, core.NewQModelIndex())
+	s.DataChanged(pIndex, pIndex, []int{Status})
+}
+
+// removeAccount is connected to removeAccount slot.
+func (s *AccountsModel) removeAccount(row int) {
+	s.BeginRemoveRows(core.NewQModelIndex(), row, row)
+	s.SetAccounts(append(s.Accounts()[:row], s.Accounts()[row+1:]...))
+	s.SetCount(len(s.Accounts()))
+	s.EndRemoveRows()
+}
+
+// Clear removes all items in model.
+func (s *AccountsModel) Clear() {
+	s.BeginRemoveRows(core.NewQModelIndex(), 0, len(s.Accounts()))
+	s.SetAccounts(s.Accounts()[0:0])
+	s.SetCount(len(s.Accounts()))
+	s.EndRemoveRows()
+}
+
+// Dump prints the content of account models to console.
+func (s *AccountsModel) Dump() {
+	fmt.Printf("Dimensions rows %d cols %d\n", s.rowCount(nil), s.columnCount(nil))
+	for iAcc := 0; iAcc < s.rowCount(nil); iAcc++ {
+		var accountInfo = s.Accounts()[iAcc]
+		fmt.Printf("  %d. %s\n", iAcc, accountInfo.Account())
+	}
+}

internal/frontend/qt-common/accounts.go

@@ -0,0 +1,259 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtcommon
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+
+	"github.com/ProtonMail/proton-bridge/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/internal/events"
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/internal/preferences"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/keychain"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
+)
+
+// QMLer sends signals to GUI
+type QMLer interface {
+	ProcessFinished()
+	NotifyHasNoKeychain()
+	SetConnectionStatus(bool)
+	SetIsRestarting(bool)
+	SetAddAccountWarning(string, int)
+	NotifyBubble(int, string)
+	EmitEvent(string, string)
+	Quit()
+
+	CanNotReachAPI() string
+	WrongMailboxPassword() string
+}
+
+// Accounts holds functionality of users
+type Accounts struct {
+	Model *AccountsModel
+	qml   QMLer
+	um    types.UserManager
+	prefs *config.Preferences
+
+	authClient pmapi.Client
+	auth       *pmapi.Auth
+
+	LatestUserID string
+	accountMutex sync.Mutex
+}
+
+// SetupAccounts will create Model and set QMLer and UserManager
+func (a *Accounts) SetupAccounts(qml QMLer, um types.UserManager) {
+	a.Model = NewAccountsModel(nil)
+	a.qml = qml
+	a.um = um
+}
+
+// LoadAccounts refreshes the current account list in GUI
+func (a *Accounts) LoadAccounts() {
+	a.accountMutex.Lock()
+	defer a.accountMutex.Unlock()
+
+	a.Model.Clear()
+
+	users := a.um.GetUsers()
+
+	// If there are no active accounts.
+	if len(users) == 0 {
+		log.Info("No active accounts")
+		return
+	}
+	for _, user := range users {
+		accInfo := NewAccountInfo(nil)
+		username := user.Username()
+		if username == "" {
+			username = user.ID()
+		}
+		accInfo.SetAccount(username)
+
+		// Set status.
+		if user.IsConnected() {
+			accInfo.SetStatus("connected")
+		} else {
+			accInfo.SetStatus("disconnected")
+		}
+
+		// Set login info.
+		accInfo.SetUserID(user.ID())
+		accInfo.SetHostname(bridge.Host)
+		accInfo.SetPassword(user.GetBridgePassword())
+		if a.prefs != nil {
+			accInfo.SetPortIMAP(a.prefs.GetInt(preferences.IMAPPortKey))
+			accInfo.SetPortSMTP(a.prefs.GetInt(preferences.SMTPPortKey))
+		}
+
+		// Set aliases.
+		accInfo.SetAliases(strings.Join(user.GetAddresses(), ";"))
+		accInfo.SetIsExpanded(user.ID() == a.LatestUserID)
+		accInfo.SetIsCombinedAddressMode(user.IsCombinedAddressMode())
+
+		a.Model.addAccount(accInfo)
+	}
+
+	// Updated can clear.
+	a.LatestUserID = ""
+}
+
+// ClearCache signal to remove all DB files
+func (a *Accounts) ClearCache() {
+	defer a.qml.ProcessFinished()
+	if err := a.um.ClearData(); err != nil {
+		log.Error("While clearing cache: ", err)
+	}
+	// Clearing data removes everything (db, preferences, ...)
+	// so everything has to be stopped and started again.
+	a.qml.SetIsRestarting(true)
+	a.qml.Quit()
+}
+
+// ClearKeychain signal remove all accounts from keychains
+func (a *Accounts) ClearKeychain() {
+	defer a.qml.ProcessFinished()
+	for _, user := range a.um.GetUsers() {
+		if err := a.um.DeleteUser(user.ID(), false); err != nil {
+			log.Error("While deleting user: ", err)
+			if err == keychain.ErrNoKeychainInstalled { // Probably not needed anymore.
+				a.qml.NotifyHasNoKeychain()
+			}
+		}
+	}
+}
+
+// LogoutAccount signal to remove account
+func (a *Accounts) LogoutAccount(iAccount int) {
+	defer a.qml.ProcessFinished()
+	userID := a.Model.get(iAccount).UserID()
+	user, err := a.um.GetUser(userID)
+	if err != nil {
+		log.Error("While logging out ", userID, ": ", err)
+		return
+	}
+	if err := user.Logout(); err != nil {
+		log.Error("While logging out ", userID, ": ", err)
+	}
+}
+
+func (a *Accounts) showLoginError(err error, scope string) bool {
+	if err == nil {
+		a.qml.SetConnectionStatus(true) // If we are here connection is ok.
+		return false
+	}
+	log.Warnf("%s: %v", scope, err)
+	if err == pmapi.ErrAPINotReachable {
+		a.qml.SetConnectionStatus(false)
+		SendNotification(a.qml, TabAccount, a.qml.CanNotReachAPI())
+		a.qml.ProcessFinished()
+		return true
+	}
+	a.qml.SetConnectionStatus(true) // If we are here connection is ok.
+	if err == pmapi.ErrUpgradeApplication {
+		a.qml.EmitEvent(events.UpgradeApplicationEvent, "")
+		return true
+	}
+	a.qml.SetAddAccountWarning(err.Error(), -1)
+	return true
+}
+
+// Login signal returns:
+// -1: when error occurred
+//  0: when no 2FA and no MBOX
+//  1: when has 2FA
+//  2: when has no 2FA but have MBOX
+func (a *Accounts) Login(login, password string) int {
+	var err error
+	a.authClient, a.auth, err = a.um.Login(login, password)
+	if a.showLoginError(err, "login") {
+		return -1
+	}
+	if a.auth.HasTwoFactor() {
+		return 1
+	}
+	if a.auth.HasMailboxPassword() {
+		return 2
+	}
+	return 0 // No 2FA, no mailbox password.
+}
+
+// Auth2FA returns:
+//  -1 : error (use SetAddAccountWarning to show message)
+//   0 : single password mode
+//   1 : two password mode
+func (a *Accounts) Auth2FA(twoFacAuth string) int {
+	var err error
+	if a.auth == nil || a.authClient == nil {
+		err = fmt.Errorf("missing authentication in auth2FA %p %p", a.auth, a.authClient)
+	} else {
+		_, err = a.authClient.Auth2FA(twoFacAuth, a.auth)
+	}
+
+	if a.showLoginError(err, "auth2FA") {
+		return -1
+	}
+
+	if a.auth.HasMailboxPassword() {
+		return 1 // Ask for mailbox password.
+	}
+	return 0 // One password.
+}
+
+// AddAccount signal to add an account. It should close login modal
+// ProcessFinished if ok.
+func (a *Accounts) AddAccount(mailboxPassword string) int {
+	if a.auth == nil || a.authClient == nil {
+		log.Errorf("Missing authentication in addAccount %p %p", a.auth, a.authClient)
+		a.qml.SetAddAccountWarning(a.qml.WrongMailboxPassword(), -2)
+		return -1
+	}
+
+	user, err := a.um.FinishLogin(a.authClient, a.auth, mailboxPassword)
+	if err != nil {
+		log.WithError(err).Error("Login was unsuccessful")
+		a.qml.SetAddAccountWarning("Failure: "+err.Error(), -2)
+		return -1
+	}
+
+	a.LatestUserID = user.ID()
+	a.qml.EmitEvent(events.UserRefreshEvent, user.ID())
+	a.qml.ProcessFinished()
+	return 0
+}
+
+// DeleteAccount by index in Model
+func (a *Accounts) DeleteAccount(iAccount int, removePreferences bool) {
+	defer a.qml.ProcessFinished()
+	userID := a.Model.get(iAccount).UserID()
+	if err := a.um.DeleteUser(userID, removePreferences); err != nil {
+		log.Warn("deleteUser: cannot remove user: ", err)
+		if err == keychain.ErrNoKeychainInstalled {
+			a.qml.NotifyHasNoKeychain()
+			return
+		}
+		SendNotification(a.qml, TabSettings, err.Error())
+		return
+	}
+}

internal/frontend/qt-common/common.cpp

@@ -1,23 +1,30 @@
 // +build !nogui
 
-
-#include "logs.h"
+#include "common.h"
 #include "_cgo_export.h"
 
+#include <QObject>
 #include <QByteArray>
 #include <QString>
+#include <QVector>
 #include <QtGlobal>
 
 void messageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
 {
-    Q_UNUSED(type);
-    Q_UNUSED(context);
-
-    QByteArray localMsg = msg.toUtf8().prepend("WHITESPACE");
+    Q_UNUSED( type )
+        Q_UNUSED( context )
+        QByteArray localMsg = msg.toUtf8().prepend("WHITESPACE");
     logMsgPacked(
             const_cast<char*>( (localMsg.constData()) +10 ),
             localMsg.size()-10
             );
     //printf("Handler: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
 }
-void InstallMessageHandler() { qInstallMessageHandler(messageHandler); }
+void InstallMessageHandler() {
+    qInstallMessageHandler(messageHandler);
+}
+
+
+void RegisterTypes() {
+    qRegisterMetaType<QVector<int> >();
+}

internal/frontend/qt-common/common.go

@@ -0,0 +1,120 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtcommon
+
+//#include "common.h"
+import "C"
+
+import (
+	"bufio"
+	"os"
+	"time"
+
+	"github.com/sirupsen/logrus"
+	"github.com/therecipe/qt/core"
+)
+
+var log = logrus.WithField("pkg", "frontend/qt-common")
+var logQML = logrus.WithField("pkg", "frontend/qml")
+
+// RegisterTypes for vector of ints
+func RegisterTypes() { // need to fix test message
+	C.RegisterTypes()
+}
+
+func installMessageHandler() {
+	C.InstallMessageHandler()
+}
+
+//export logMsgPacked
+func logMsgPacked(data *C.char, len C.int) {
+	logQML.Warn(C.GoStringN(data, len))
+}
+
+// QtSetupCoreAndControls hanldes global setup of Qt.
+// Should be called once per program. Probably once per thread is fine.
+func QtSetupCoreAndControls(programName, programVersion string) {
+	installMessageHandler()
+	// Core setup.
+	core.QCoreApplication_SetApplicationName(programName)
+	core.QCoreApplication_SetApplicationVersion(programVersion)
+	// High DPI scaling for windows.
+	core.QCoreApplication_SetAttribute(core.Qt__AA_EnableHighDpiScaling, false)
+	// Software OpenGL: to avoid dedicated GPU.
+	core.QCoreApplication_SetAttribute(core.Qt__AA_UseSoftwareOpenGL, true)
+	// Basic style for QuickControls2 objects.
+	//quickcontrols2.QQuickStyle_SetStyle("material")
+}
+
+// NewQByteArrayFromString is wrapper for new QByteArray from string
+func NewQByteArrayFromString(name string) *core.QByteArray {
+	return core.NewQByteArray2(name, -1)
+}
+
+// NewQVariantString is wrapper for QVariant alocator String
+func NewQVariantString(data string) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// NewQVariantStringArray is wrapper for QVariant alocator String Array
+func NewQVariantStringArray(data []string) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// NewQVariantBool is wrapper for QVariant alocator Bool
+func NewQVariantBool(data bool) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// NewQVariantInt is wrapper for QVariant alocator Int
+func NewQVariantInt(data int) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// NewQVariantLong is wrapper for QVariant alocator Int64
+func NewQVariantLong(data int64) *core.QVariant {
+	return core.NewQVariant1(data)
+}
+
+// Pause used to show GUI tests
+func Pause() {
+	time.Sleep(500 * time.Millisecond)
+}
+
+// Longer pause used to diplay GUI tests
+func PauseLong() {
+	time.Sleep(3 * time.Second)
+}
+
+// FIXME: Not working in test...
+func WaitForEnter() {
+	log.Print("Press 'Enter' to continue...")
+	bufio.NewReader(os.Stdin).ReadBytes('\n')
+}
+
+type Listener interface {
+	Add(string, chan<- string)
+}
+
+func MakeAndRegisterEvent(eventListener Listener, event string) <-chan string {
+	ch := make(chan string)
+	eventListener.Add(event, ch)
+	return ch
+}

internal/frontend/qt-common/common.h

@@ -10,8 +10,9 @@
 extern "C" {
 #endif // C++
 
-void InstallMessageHandler();
-;
+    void InstallMessageHandler();
+    void RegisterTypes();
+    ;
 
 #ifdef __cplusplus
 }

internal/frontend/qt-common/notification.go

@@ -0,0 +1,40 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtcommon
+
+// Positions of notification bubble
+const (
+	TabAccount    = 0
+	TabSettings   = 1
+	TabHelp       = 2
+	TabQuit       = 4
+	TabUpdates    = 100
+	TabAddAccount = -1
+)
+
+// Notifier show bubble notification at postion marked by int
+type Notifier interface {
+	NotifyBubble(int, string)
+}
+
+// SendNotification unifies notification in GUI
+func SendNotification(qml Notifier, tabIndex int, msg string) {
+	qml.NotifyBubble(tabIndex, msg)
+}

internal/frontend/qt-ie/Makefile.local

@@ -0,0 +1,60 @@
+QMLfiles=$(shell find ../qml/ -name "*.qml") $(shell find ../qml/ -name "qmldir")
+FontAwesome=${CURDIR}/../share/fontawesome-webfont.ttf
+ImageDir=${CURDIR}/../share/icons
+Icons=$(shell find ${ImageDir} -name "*.png")
+Icons+= share/images/folder_open.png share/images/envelope_open.png
+MocDependencies= ./ui.go ./account_model.go ./folder_structure.go ./folder_functions.go
+## EnumDependecies= ../backend/errors/errors.go ../backend/progress.go ../backend/source/enum.go ../frontend/enums.go
+
+all: ../qml/ImportExportUI/images moc.go ../qml/GuiIE.qml qmlcheck rcc.cpp
+
+## ./qml/GuiIE.qml: enums.sh ${EnumDependecies}
+## 	./enums.sh
+
+../qml/ProtonUI/fontawesome.ttf:
+	ln -sf ${FontAwesome} $@
+../qml/ProtonUI/images:
+	ln -sf ${ImageDir} $@
+../qml/ImportExportUI/images:
+	ln -sf ${ImageDir} $@
+
+translate.ts: ${QMLfiles}
+	lupdate -recursive qml/  -ts $@
+
+rcc.cpp: ${QMLfiles} ${Icons} resources.qrc
+	rm -f rcc.cpp rcc.qrc && qtrcc -o .
+
+
+qmltest:
+	qmltestrunner -eventdelay 500 -import ../qml/
+qmlcheck:  ../qml/ProtonUI/fontawesome.ttf ../qml/ImportExportUI/images ../qml/ProtonUI/images
+	qmlscene -verbose -I ../qml/ -f ../qml/tst_GuiIE.qml --quit
+qmlpreview: ../qml/ProtonUI/fontawesome.ttf ../qml/ImportExportUI/images ../qml/ProtonUI/images
+	rm -f ../qml/*.qmlc ../qml/ProtonUI/*.qmlc ../qml/ImportExportUI/*.qmlc
+	qmlscene -verbose -I ../qml/ -f ../qml/tst_GuiIE.qml 2>&1
+
+test: qmlcheck moc.go rcc.cpp
+	go test -v
+
+moc.go: ${MocDependencies}
+	qtmoc
+
+clean:
+	rm -rf linux/
+	rm -rf darwin/
+	rm -rf windows/
+	rm -rf deploy/
+	rm -f moc.cpp
+	rm -f moc.go
+	rm -f moc.h
+	rm -f moc_cgo*.go
+	rm -f moc_moc.h
+	rm -f rcc.cpp
+	rm -f rcc.qrc
+	rm -f rcc_cgo*.go
+	rm -f ../rcc.cpp
+	rm -f ../rcc.qrc
+	rm -f ../rcc_cgo*.go
+	rm -rf ../qml/ProtonUI/images
+	rm -f ../qml/ProtonUI/fontawesome.ttf
+	find ../qml -name *.qmlc -exec rm {} \;

internal/frontend/qt-ie/README.md

@@ -0,0 +1,55 @@
+# ProtonMail Import-Export Qt interface
+Import-Export uses [Qt](https://www.qt.io) framework for creating appealing graphical
+user interface. Package [therecipe/qt](https://github.com/therecipe/qt) is used
+to implement Qt into [Go](https://www.goglang.com).
+
+
+# For developers
+The GUI is designed inside QML files. Communication with backend is done via
+[frontend.go](./frontend.go). The API documentation is done via `go-doc`.
+
+## Setup
+* if you don't have the system wide `go-1.8.1` download, install localy (e.g.
+  `~/build/go-1.8.1`) and setup:
+
+        export GOROOT=~/build/go-1.8.1/go
+        export PATH=$GOROOT/bin:$PATH
+
+* go to your working directory and export `$GOPATH`
+
+        export GOPATH=`Pwd`
+        mkdir -p $GOPATH/bin
+        export PATH=$PATH:$GOPATH/bin
+
+
+* if you dont have system wide `Qt-5.8.0`
+  [download](https://download.qt.io/official_releases/qt/5.8/5.8.0/qt-opensource-linux-x64-5.8.0.run),
+  install locally (e.g. `~/build/qt/qt-5.8.0`) and setup:
+
+        export QT_DIR=~/build/qt/qt-5.8.0
+        export PATH=$QT_DIR/5.8/gcc_64/bin:$PATH
+
+* `Go-Qt` setup (installation is system dependent see
+  [therecipe/qt/README](https://github.com/therecipe/qt/blob/master/README.md)
+  for details)
+
+        go get -u -v github.com/therecipe/qt/cmd/...
+        $GOPATH/bin/qtsetup
+
+## Compile
+* it is necessary to compile the Qt-C++ with go for resources and meta-objects
+
+        make -f Makefile.local
+
+* FIXME the rcc file is implicitly generated with `package main`. This needs to
+  be changed to `package qtie` manually
+* check that user interface is working
+
+        make -f Makefile.local test
+
+## Test
+
+        make -f Makefile.local qmlpreview
+
+## Deploy
+* before compilation of Import-Export it is necessary to run compilation of Qt-C++ part (done in makefile)

internal/frontend/qt-ie/enums.go

@@ -0,0 +1,120 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	"github.com/therecipe/qt/core"
+)
+
+// Folder Type
+const (
+	FolderTypeSystem   = ""
+	FolderTypeLabel    = "label"
+	FolderTypeFolder   = "folder"
+	FolderTypeExternal = "external"
+)
+
+// Status
+const (
+	StatusNoInternet          = "noInternet"
+	StatusCheckingInternet    = "internetCheck"
+	StatusNewVersionAvailable = "oldVersion"
+	StatusUpToDate            = "upToDate"
+	StatusForceUpdate         = "forceupdate"
+)
+
+// Constants for data map
+const (
+	// Account info
+	Account  = int(core.Qt__UserRole) + 1 + iota // 256 + 1 = 257
+	Status                                       // 258
+	Password                                     // 259
+	Aliases                                      // ...
+	IsExpanded
+	// Folder info
+	FolderId
+	FolderName
+	FolderColor
+	FolderType
+	FolderEntries
+	IsFolderSelected
+	FolderFromDate
+	FolderToDate
+	TargetFolderID
+	TargetLabelIDs
+	// Error list
+	MailSubject
+	MailDate
+	MailFrom
+	InputFolder
+	ErrorMessage
+	// Transfer rules mbox
+	MboxSelectedIndex
+	MboxIsActive
+	MboxID
+	MboxName
+	MboxType
+	MboxColor
+	// Transfer Rules
+	RuleTargetLabelColors
+	RuleFromDate
+	RuleToDate
+)
+
+const (
+	// This should match enums in GuiIE.qml
+	errUnknownError             = 0
+	errEventAPILogout           = 1
+	errUpdateAPI                = 2
+	errUpdateJSON               = 3
+	errUserAuth                 = 4
+	errQApplication             = 18
+	errEmailExportFailed        = 6
+	errEmailExportMissing       = 7
+	errNothingToImport          = 8
+	errEmailImportFailed        = 12
+	errDraftImportFailed        = 13
+	errDraftLabelFailed         = 14
+	errEncryptMessageAttachment = 15
+	errEncryptMessage           = 16
+	errNoInternetWhileImport    = 17
+	errUnlockUser               = 5
+	errSourceMessageNotSelected = 19
+	errCannotParseMail          = 5000
+	errWrongLoginOrPassword     = 5001
+	errWrongServerPathOrPort    = 5002
+	errWrongAuthMethod          = 5003
+	errIMAPFetchFailed          = 5004
+	errLocalSourceLoadFailed    = 1000
+	errPMLoadFailed             = 1001
+	errRemoteSourceLoadFailed   = 1002
+	errLoadAccountList          = 1005
+	errExit                     = 1006
+	errRetry                    = 1007
+	errAsk                      = 1008
+	errImportFailed             = 1009
+	errCreateLabelFailed        = 1010
+	errCreateFolderFailed       = 1011
+	errUpdateLabelFailed        = 1012
+	errUpdateFolderFailed       = 1013
+	errFillFolderName           = 1014
+	errSelectFolderColor        = 1015
+	errNoInternet               = 1016
+)

internal/frontend/qt-ie/error_list.go

@@ -0,0 +1,100 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	qtcommon "github.com/ProtonMail/proton-bridge/internal/frontend/qt-common"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/therecipe/qt/core"
+)
+
+func init() {
+	ErrorListModel_QRegisterMetaType()
+}
+
+// ErrorListModel to sending error details to Qt
+type ErrorListModel struct {
+	core.QAbstractListModel
+
+	// Qt list model
+	_ func()                   `constructor:"init"`
+	_ map[int]*core.QByteArray `property:"roles"`
+	_ int                      `property:"count"`
+
+	Progress *transfer.Progress
+	records  []*transfer.MessageStatus
+}
+
+func (e *ErrorListModel) init() {
+	e.SetRoles(map[int]*core.QByteArray{
+		MailSubject:  qtcommon.NewQByteArrayFromString("mailSubject"),
+		MailDate:     qtcommon.NewQByteArrayFromString("mailDate"),
+		MailFrom:     qtcommon.NewQByteArrayFromString("mailFrom"),
+		InputFolder:  qtcommon.NewQByteArrayFromString("inputFolder"),
+		ErrorMessage: qtcommon.NewQByteArrayFromString("errorMessage"),
+	})
+	// basic QAbstractListModel mehods
+	e.ConnectData(e.data)
+	e.ConnectRowCount(e.rowCount)
+	e.ConnectColumnCount(e.columnCount)
+	e.ConnectRoleNames(e.roleNames)
+}
+
+func (e *ErrorListModel) data(index *core.QModelIndex, role int) *core.QVariant {
+	if !index.IsValid() {
+		return core.NewQVariant()
+	}
+
+	if index.Row() >= len(e.records) {
+		return core.NewQVariant()
+	}
+
+	var r = e.records[index.Row()]
+
+	switch role {
+	case MailSubject:
+		return qtcommon.NewQVariantString(r.Subject)
+	case MailDate:
+		return qtcommon.NewQVariantString(r.Time.String())
+	case MailFrom:
+		return qtcommon.NewQVariantString(r.From)
+	case InputFolder:
+		return qtcommon.NewQVariantString(r.SourceID)
+	case ErrorMessage:
+		return qtcommon.NewQVariantString(r.GetErrorMessage())
+	default:
+		return core.NewQVariant()
+	}
+}
+
+func (e *ErrorListModel) rowCount(parent *core.QModelIndex) int    { return len(e.records) }
+func (e *ErrorListModel) columnCount(parent *core.QModelIndex) int { return 1 }
+func (e *ErrorListModel) roleNames() map[int]*core.QByteArray      { return e.Roles() }
+
+func (e *ErrorListModel) load() {
+	if e.Progress == nil {
+		log.Error("Progress not connected")
+		return
+	}
+
+	e.BeginResetModel()
+	e.records = e.Progress.GetFailedMessages()
+	e.EndResetModel()
+}

internal/frontend/qt-ie/export.go

@@ -0,0 +1,80 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/pkg/errors"
+)
+
+const (
+	TypeEML  = "EML"
+	TypeMBOX = "MBOX"
+)
+
+func (f *FrontendQt) LoadStructureForExport(addressOrID string) {
+	errCode := errUnknownError
+	var err error
+	defer func() {
+		if err != nil {
+			f.showError(errCode, errors.Wrap(err, "failed to load structure for "+addressOrID))
+			f.Qml.ExportStructureLoadFinished(false)
+		} else {
+			f.Qml.ExportStructureLoadFinished(true)
+		}
+	}()
+
+	if f.transfer, err = f.ie.GetEMLExporter(addressOrID, ""); err != nil {
+		// The only error can be problem to load PM user and address.
+		errCode = errPMLoadFailed
+		return
+	}
+
+	// Export has only one option to set time limits--by global time range.
+	// In case user changes file or because of some bug global time is saved
+	// to all rules, let's clear it, because there is no way to show it in
+	// GUI and user would be confused and see it does not work at all.
+	for _, rule := range f.transfer.GetRules() {
+		isActive := rule.Active
+		f.transfer.SetRule(rule.SourceMailbox, rule.TargetMailboxes, 0, 0)
+		if !isActive {
+			f.transfer.UnsetRule(rule.SourceMailbox)
+		}
+	}
+
+	f.TransferRules.setTransfer(f.transfer)
+}
+
+func (f *FrontendQt) StartExport(rootPath, login, fileType string, attachEncryptedBody bool) {
+	var target transfer.TargetProvider
+	if fileType == TypeEML {
+		target = transfer.NewEMLProvider(rootPath)
+	} else if fileType == TypeMBOX {
+
+		target = transfer.NewMBOXProvider(rootPath)
+	} else {
+		log.Errorln("Wrong file format:", fileType)
+		return
+	}
+	f.transfer.ChangeTarget(target)
+	f.transfer.SetSkipEncryptedMessages(!attachEncryptedBody)
+	progress := f.transfer.Start()
+	f.setProgressManager(progress)
+}

internal/frontend/qt-ie/folder_functions.go

@@ -0,0 +1,531 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	"errors"
+	"strings"
+
+	qtcommon "github.com/ProtonMail/proton-bridge/internal/frontend/qt-common"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
+	"github.com/therecipe/qt/core"
+)
+
+const (
+	GlobalOptionIndex = -1
+)
+
+var AllFolderInfoRoles = []int{
+	FolderId,
+	FolderName,
+	FolderColor,
+	FolderType,
+	FolderEntries,
+	IsFolderSelected,
+	FolderFromDate,
+	FolderToDate,
+	TargetFolderID,
+	TargetLabelIDs,
+}
+
+func getTargetHashes(mboxes []transfer.Mailbox) (targetFolderID, targetLabelIDs string) {
+	for _, targetMailbox := range mboxes {
+		if targetMailbox.IsExclusive {
+			targetFolderID = targetMailbox.Hash()
+		} else {
+			targetLabelIDs += targetMailbox.Hash() + ";"
+		}
+	}
+
+	targetLabelIDs = strings.Trim(targetLabelIDs, ";")
+	return
+}
+
+func newFolderInfo(mbox transfer.Mailbox, rule *transfer.Rule) *FolderInfo {
+	targetFolderID, targetLabelIDs := getTargetHashes(rule.TargetMailboxes)
+
+	entry := &FolderInfo{
+		mailbox:          mbox,
+		FolderEntries:    1,
+		FromDate:         rule.FromTime,
+		ToDate:           rule.ToTime,
+		IsFolderSelected: rule.Active,
+		TargetFolderID:   targetFolderID,
+		TargetLabelIDs:   targetLabelIDs,
+	}
+
+	entry.FolderType = FolderTypeSystem
+	if !pmapi.IsSystemLabel(mbox.ID) {
+		if mbox.IsExclusive {
+			entry.FolderType = FolderTypeFolder
+		} else {
+			entry.FolderType = FolderTypeLabel
+		}
+	}
+
+	return entry
+}
+
+func (s *FolderStructure) saveRule(info *FolderInfo) error {
+	if s.transfer == nil {
+		return errors.New("missing transfer")
+	}
+	sourceMbox := info.mailbox
+	if !info.IsFolderSelected {
+		s.transfer.UnsetRule(sourceMbox)
+		return nil
+	}
+	allTargetMboxes, err := s.transfer.TargetMailboxes()
+	if err != nil {
+		return err
+	}
+	var targetMboxes []transfer.Mailbox
+	for _, target := range allTargetMboxes {
+		targetHash := target.Hash()
+		if info.TargetFolderID == targetHash || strings.Contains(info.TargetLabelIDs, targetHash) {
+			targetMboxes = append(targetMboxes, target)
+		}
+	}
+
+	return s.transfer.SetRule(sourceMbox, targetMboxes, info.FromDate, info.ToDate)
+}
+
+func (s *FolderInfo) updateTargetLabelIDs(targetLabelsSet map[string]struct{}) {
+	targets := []string{}
+	for key := range targetLabelsSet {
+		targets = append(targets, key)
+	}
+	s.TargetLabelIDs = strings.Join(targets, ";")
+}
+
+func (s *FolderInfo) AddTargetLabel(targetID string) {
+	if targetID == "" {
+		return
+	}
+	targetLabelsSet := s.getSetOfLabels()
+	targetLabelsSet[targetID] = struct{}{}
+	s.updateTargetLabelIDs(targetLabelsSet)
+}
+
+func (s *FolderInfo) RemoveTargetLabel(targetID string) {
+	if targetID == "" {
+		return
+	}
+	targetLabelsSet := s.getSetOfLabels()
+	delete(targetLabelsSet, targetID)
+	s.updateTargetLabelIDs(targetLabelsSet)
+}
+
+func (s *FolderInfo) IsType(askType string) bool {
+	return s.FolderType == askType
+}
+
+func (s *FolderInfo) getSetOfLabels() (uniqSet map[string]struct{}) {
+	uniqSet = make(map[string]struct{})
+	for _, label := range s.TargetLabelIDList() {
+		uniqSet[label] = struct{}{}
+	}
+	return
+}
+
+func (s *FolderInfo) TargetLabelIDList() []string {
+	return strings.FieldsFunc(
+		s.TargetLabelIDs,
+		func(c rune) bool { return c == ';' },
+	)
+}
+
+// Get data
+func (s *FolderStructure) data(index *core.QModelIndex, role int) *core.QVariant {
+	row, isValid := index.Row(), index.IsValid()
+	if !isValid || row >= s.getCount() {
+		log.Warnln("Wrong index", isValid, row)
+		return core.NewQVariant()
+	}
+
+	var f = s.get(row)
+
+	switch role {
+	case FolderId:
+		return qtcommon.NewQVariantString(f.mailbox.Hash())
+	case FolderName, int(core.Qt__DisplayRole):
+		return qtcommon.NewQVariantString(f.mailbox.Name)
+	case FolderColor:
+		return qtcommon.NewQVariantString(f.mailbox.Color)
+	case FolderType:
+		return qtcommon.NewQVariantString(f.FolderType)
+	case FolderEntries:
+		return qtcommon.NewQVariantInt(f.FolderEntries)
+	case FolderFromDate:
+		return qtcommon.NewQVariantLong(f.FromDate)
+	case FolderToDate:
+		return qtcommon.NewQVariantLong(f.ToDate)
+	case IsFolderSelected:
+		return qtcommon.NewQVariantBool(f.IsFolderSelected)
+	case TargetFolderID:
+		return qtcommon.NewQVariantString(f.TargetFolderID)
+	case TargetLabelIDs:
+		return qtcommon.NewQVariantString(f.TargetLabelIDs)
+	default:
+		log.Warnln("Wrong role", role)
+		return core.NewQVariant()
+	}
+}
+
+// Get header data (table view, tree view)
+func (s *FolderStructure) headerData(section int, orientation core.Qt__Orientation, role int) *core.QVariant {
+	if role != int(core.Qt__DisplayRole) {
+		return core.NewQVariant()
+	}
+
+	if orientation == core.Qt__Horizontal {
+		return qtcommon.NewQVariantString("Column")
+	}
+
+	return qtcommon.NewQVariantString("Row")
+}
+
+// Flags is editable
+func (s *FolderStructure) flags(index *core.QModelIndex) core.Qt__ItemFlag {
+	if !index.IsValid() {
+		return core.Qt__ItemIsEnabled
+	}
+
+	// can do here also: core.NewQAbstractItemModelFromPointer(s.Pointer()).Flags(index) | core.Qt__ItemIsEditable
+	// or s.FlagsDefault(index) | core.Qt__ItemIsEditable
+	return core.Qt__ItemIsEnabled | core.Qt__ItemIsSelectable | core.Qt__ItemIsEditable
+}
+
+// Set data
+func (s *FolderStructure) setData(index *core.QModelIndex, value *core.QVariant, role int) bool {
+	log.Debugf("SET DATA %d", role)
+	if !index.IsValid() {
+		return false
+	}
+	if index.Row() < GlobalOptionIndex || index.Row() > s.getCount() || index.Column() != 1 {
+		return false
+	}
+	item := s.get(index.Row())
+	t := true
+	switch role {
+	case FolderId, FolderType:
+		log.
+			WithField("structure", s).
+			WithField("row", index.Row()).
+			WithField("column", index.Column()).
+			WithField("role", role).
+			WithField("isEdit", role == int(core.Qt__EditRole)).
+			Warn("Set constant role forbiden")
+	case FolderName:
+		item.mailbox.Name = value.ToString()
+	case FolderColor:
+		item.mailbox.Color = value.ToString()
+	case FolderEntries:
+		item.FolderEntries = value.ToInt(&t)
+	case FolderFromDate:
+		item.FromDate = value.ToLongLong(&t)
+	case FolderToDate:
+		item.ToDate = value.ToLongLong(&t)
+	case IsFolderSelected:
+		item.IsFolderSelected = value.ToBool()
+	case TargetFolderID:
+		item.TargetFolderID = value.ToString()
+	case TargetLabelIDs:
+		item.TargetLabelIDs = value.ToString()
+	default:
+		log.Debugln("uknown role ", s, index.Row(), index.Column(), role, role == int(core.Qt__EditRole))
+		return false
+	}
+	s.changedEntityRole(index.Row(), index.Row(), role)
+	return true
+}
+
+// Dimension of model: number of rows is equivalent to number of items in list
+func (s *FolderStructure) rowCount(parent *core.QModelIndex) int {
+	return s.getCount()
+}
+
+func (s *FolderStructure) getCount() int {
+	return len(s.entities)
+}
+
+// Returns names of available item properties
+func (s *FolderStructure) roleNames() map[int]*core.QByteArray {
+	return s.Roles()
+}
+
+// Clear removes all items in model
+func (s *FolderStructure) Clear() {
+	s.BeginResetModel()
+	if s.getCount() != 0 {
+		s.entities = []*FolderInfo{}
+	}
+
+	s.GlobalOptions = FolderInfo{
+		mailbox: transfer.Mailbox{
+			Name: "=",
+		},
+		FromDate:       0,
+		ToDate:         0,
+		TargetFolderID: "",
+		TargetLabelIDs: "",
+	}
+	s.EndResetModel()
+}
+
+// Method connected to addEntry slot
+func (s *FolderStructure) addEntry(entry *FolderInfo) {
+	s.insertEntry(entry, s.getCount())
+}
+
+// NewUniqId which is not in map yet.
+func (s *FolderStructure) newUniqId() (name string) {
+	name = s.GlobalOptions.mailbox.Name
+	mbox := transfer.Mailbox{Name: name}
+	for newVal := byte(name[0]); true; newVal++ {
+		mbox.Name = string([]byte{newVal})
+		if s.getRowById(mbox.Hash()) < GlobalOptionIndex {
+			return
+		}
+	}
+	return
+}
+
+// Method connected to addEntry slot
+func (s *FolderStructure) insertEntry(entry *FolderInfo, i int) {
+	s.BeginInsertRows(core.NewQModelIndex(), i, i)
+	s.entities = append(s.entities[:i], append([]*FolderInfo{entry}, s.entities[i:]...)...)
+	s.EndInsertRows()
+	// update global if conflict
+	if entry.mailbox.Hash() == s.GlobalOptions.mailbox.Hash() {
+		globalName := s.newUniqId()
+		s.GlobalOptions.mailbox.Name = globalName
+	}
+}
+
+func (s *FolderStructure) GetInfo(row int) FolderInfo {
+	return *s.get(row)
+}
+
+func (s *FolderStructure) changedEntityRole(rowStart int, rowEnd int, roles ...int) {
+	if rowStart < GlobalOptionIndex || rowEnd < GlobalOptionIndex {
+		return
+	}
+	if rowStart < 0 || rowStart >= s.getCount() {
+		rowStart = 0
+	}
+	if rowEnd < 0 || rowEnd >= s.getCount() {
+		rowEnd = s.getCount()
+	}
+	if rowStart > rowEnd {
+		tmp := rowStart
+		rowStart = rowEnd
+		rowEnd = tmp
+	}
+	indexStart := s.Index(rowStart, 0, core.NewQModelIndex())
+	indexEnd := s.Index(rowEnd, 0, core.NewQModelIndex())
+	s.updateSelection(indexStart, indexEnd, roles)
+	s.DataChanged(indexStart, indexEnd, roles)
+}
+
+func (s *FolderStructure) setFolderSelection(id string, toSelect bool) {
+	log.Debugf("set folder selection %q %b", id, toSelect)
+	i := s.getRowById(id)
+	//
+	info := s.get(i)
+	before := info.IsFolderSelected
+	info.IsFolderSelected = toSelect
+	if err := s.saveRule(info); err != nil {
+		s.get(i).IsFolderSelected = before
+		log.WithError(err).WithField("id", id).WithField("toSelect", toSelect).Error("Cannot set selection")
+		return
+	}
+	//
+	s.changedEntityRole(i, i, IsFolderSelected)
+}
+
+func (s *FolderStructure) setTargetFolderID(id, target string) {
+	log.Debugf("set targetFolderID %q %q", id, target)
+	i := s.getRowById(id)
+	//
+	info := s.get(i)
+	//s.get(i).TargetFolderID = target
+	before := info.TargetFolderID
+	info.TargetFolderID = target
+	if err := s.saveRule(info); err != nil {
+		info.TargetFolderID = before
+		log.WithError(err).WithField("id", id).WithField("target", target).Error("Cannot set target")
+		return
+	}
+	//
+	s.changedEntityRole(i, i, TargetFolderID)
+	if target == "" { // do not import
+		before := info.TargetLabelIDs
+		info.TargetLabelIDs = ""
+		if err := s.saveRule(info); err != nil {
+			info.TargetLabelIDs = before
+			log.WithError(err).WithField("id", id).WithField("target", target).Error("Cannot set target")
+			return
+		}
+		s.changedEntityRole(i, i, TargetLabelIDs)
+	}
+}
+
+func (s *FolderStructure) addTargetLabelID(id, label string) {
+	log.Debugf("add target label id %q %q", id, label)
+	if label == "" {
+		return
+	}
+	i := s.getRowById(id)
+	info := s.get(i)
+	before := info.TargetLabelIDs
+	info.AddTargetLabel(label)
+	if err := s.saveRule(info); err != nil {
+		info.TargetLabelIDs = before
+		log.WithError(err).WithField("id", id).WithField("label", label).Error("Cannot add label")
+		return
+	}
+	s.changedEntityRole(i, i, TargetLabelIDs)
+}
+
+func (s *FolderStructure) removeTargetLabelID(id, label string) {
+	log.Debugf("remove label id %q %q", id, label)
+	if label == "" {
+		return
+	}
+	i := s.getRowById(id)
+	info := s.get(i)
+	before := info.TargetLabelIDs
+	info.RemoveTargetLabel(label)
+	if err := s.saveRule(info); err != nil {
+		info.TargetLabelIDs = before
+		log.WithError(err).WithField("id", id).WithField("label", label).Error("Cannot remove label")
+		return
+	}
+	s.changedEntityRole(i, i, TargetLabelIDs)
+}
+
+func (s *FolderStructure) setFromToDate(id string, from, to int64) {
+	log.Debugf("set from to date %q %d %d", id, from, to)
+	i := s.getRowById(id)
+	info := s.get(i)
+	beforeFrom := info.FromDate
+	beforeTo := info.ToDate
+	info.FromDate = from
+	info.ToDate = to
+	if err := s.saveRule(info); err != nil {
+		info.FromDate = beforeFrom
+		info.ToDate = beforeTo
+		log.WithError(err).WithField("id", id).WithField("from", from).WithField("to", to).Error("Cannot set date")
+		return
+	}
+	s.changedEntityRole(i, i, FolderFromDate, FolderToDate)
+}
+
+func (s *FolderStructure) selectType(folderType string, toSelect bool) {
+	log.Debugf("set type %q %b", folderType, toSelect)
+	iFirst, iLast := -1, -1
+	for i, entity := range s.entities {
+		if entity.IsType(folderType) {
+			if iFirst == -1 {
+				iFirst = i
+			}
+			before := entity.IsFolderSelected
+			entity.IsFolderSelected = toSelect
+			if err := s.saveRule(entity); err != nil {
+				entity.IsFolderSelected = before
+				log.WithError(err).WithField("i", i).WithField("type", folderType).WithField("toSelect", toSelect).Error("Cannot select type")
+			}
+			iLast = i
+		}
+	}
+	if iFirst != -1 {
+		s.changedEntityRole(iFirst, iLast, IsFolderSelected)
+	}
+}
+
+func (s *FolderStructure) updateSelection(topLeft *core.QModelIndex, bottomRight *core.QModelIndex, roles []int) {
+	for _, role := range roles {
+		switch role {
+		case IsFolderSelected:
+			s.SetSelectedFolders(true)
+			s.SetSelectedLabels(true)
+			s.SetAtLeastOneSelected(false)
+			for _, entity := range s.entities {
+				if entity.IsFolderSelected {
+					s.SetAtLeastOneSelected(true)
+				} else {
+					if entity.IsType(FolderTypeFolder) {
+						s.SetSelectedFolders(false)
+					}
+					if entity.IsType(FolderTypeLabel) {
+						s.SetSelectedLabels(false)
+					}
+				}
+				if !s.IsSelectedFolders() && !s.IsSelectedLabels() && s.IsAtLeastOneSelected() {
+					break
+				}
+			}
+		default:
+		}
+	}
+}
+
+func (s *FolderStructure) hasFolderWithName(name string) bool {
+	for _, entity := range s.entities {
+		if entity.mailbox.Name == name {
+			return true
+		}
+	}
+	return false
+}
+
+func (s *FolderStructure) getRowById(id string) (row int) {
+	for row = GlobalOptionIndex; row < s.getCount(); row++ {
+		if id == s.get(row).mailbox.Hash() {
+			return
+		}
+	}
+	row = GlobalOptionIndex - 1
+	return
+}
+
+func (s *FolderStructure) hasTarget() bool {
+	for row := 0; row < s.getCount(); row++ {
+		if s.get(row).TargetFolderID != "" {
+			return true
+		}
+	}
+	return false
+}
+
+// Getter for account info pointer
+// index out of array length returns empty folder info to avoid segfault
+// index == GlobalOptionIndex is set to access global options
+func (s *FolderStructure) get(index int) *FolderInfo {
+	if index < GlobalOptionIndex || index >= s.getCount() {
+		return &FolderInfo{}
+	}
+	if index == GlobalOptionIndex {
+		return &s.GlobalOptions
+	}
+	return s.entities[index]
+}

internal/frontend/qt-ie/folder_structure.go

@@ -0,0 +1,196 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+// TODO:
+// Proposal for new structure
+// It will be a bit more memory but much better performance
+// * Rules:
+//   * rules []Rule /QAbstracItemModel/
+//   * globalFromDate int64
+//   * globalToDate int64
+//   * globalLabel Mbox
+//   * targetPath string
+//   * filterEncryptedBodies bool
+// * Rule
+//   * sourceMbox: Mbox
+//   * targetFolders: []Mbox /QAbstracItemModel/ (all available target folders)
+//   * targetLabels: []Mbox /QAbstracItemModel/ (all available target labels)
+//   * selectedLabelColors: QStringList (need reset context on change) (show label list)
+//   * fromDate int64
+//   * toDate int64
+// * Mbox
+//   * IsActive bool (show checkox)
+//   * Name string (show name)
+//   * Type string (show icon)
+//   * Color string (show icon)
+//
+//  Biggest update: add folder or label for all roles update target models
+
+import (
+	qtcommon "github.com/ProtonMail/proton-bridge/internal/frontend/qt-common"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/therecipe/qt/core"
+)
+
+// FolderStructure model providing container for items (folder info) to QML
+//
+// QML ListView connects the model from Go and it shows item (entities)
+// information.
+//
+// Copied and edited from `github.com/therecipe/qt/internal/examples/sailfish/listview`
+//
+// NOTE: When implementing a model it is important to remember that QAbstractItemModel does not store any data itself !!!!
+// see https://doc.qt.io/qt-5/model-view-programming.html#designing-a-model
+type FolderStructure struct {
+	core.QAbstractListModel
+
+	// QtObject Constructor
+	_ func() `constructor:"init"`
+
+	// List of item properties
+	//
+	// All available item properties are inside the map
+	_ map[int]*core.QByteArray `property:"roles"`
+
+	// The data storage
+	//
+	// The slice with all entities. It is not accessed directly but using
+	// `data(index,role)`
+	entities      []*FolderInfo
+	GlobalOptions FolderInfo
+
+	transfer *transfer.Transfer
+
+	// Global Folders/Labels selection flag, use setter from QML
+	_ bool `property:"selectedLabels"`
+	_ bool `property:"selectedFolders"`
+	_ bool `property:"atLeastOneSelected"`
+
+	// Getters (const)
+	_ func() int             `slot:"getCount"`
+	_ func(index int) string `slot:"getID"`
+	_ func(id string) string `slot:"getName"`
+	_ func(id string) string `slot:"getType"`
+	_ func(id string) string `slot:"getColor"`
+	_ func(id string) int64  `slot:"getFrom"`
+	_ func(id string) int64  `slot:"getTo"`
+	_ func(id string) string `slot:"getTargetLabelIDs"`
+	_ func(name string) bool `slot:"hasFolderWithName"`
+	_ func() bool            `slot:"hasTarget"`
+
+	// TODO get folders
+	// TODO get labels
+	// TODO get selected labels
+	// TODO get selected folder
+
+	// Setters (emits DataChanged)
+	_ func(fileType string, toSelect bool) `slot:"selectType"`
+	_ func(id string, toSelect bool)       `slot:"setFolderSelection"`
+	_ func(id string, target string)       `slot:"setTargetFolderID"`
+	_ func(id string, label string)        `slot:"addTargetLabelID"`
+	_ func(id string, label string)        `slot:"removeTargetLabelID"`
+	_ func(id string, from, to int64)      `slot:"setFromToDate"`
+}
+
+// FolderInfo is the element of model
+//
+// It contains all data for one structure entry
+type FolderInfo struct {
+	/*
+		FolderId         string
+		FolderFullPath   string
+		FolderColor      string
+		FolderFullName   string
+	*/
+	mailbox          transfer.Mailbox // TODO how to reference from qml source mailbox to go target mailbox
+	FolderType       string
+	FolderEntries    int // todo remove
+	IsFolderSelected bool
+	FromDate         int64  // Unix seconds
+	ToDate           int64  // Unix seconds
+	TargetFolderID   string // target  ID TODO: this will be hash
+	TargetLabelIDs   string // semicolon separated list of label ID same here
+}
+
+// Registration of new metatype before creating instance
+//
+// NOTE: check it is run once per program. write a log
+func init() {
+	FolderStructure_QRegisterMetaType()
+}
+
+// Constructor
+//
+// Creates the map for item properties and connects the methods
+func (s *FolderStructure) init() {
+	s.SetRoles(map[int]*core.QByteArray{
+		FolderId:         qtcommon.NewQByteArrayFromString("folderId"),
+		FolderName:       qtcommon.NewQByteArrayFromString("folderName"),
+		FolderColor:      qtcommon.NewQByteArrayFromString("folderColor"),
+		FolderType:       qtcommon.NewQByteArrayFromString("folderType"),
+		FolderEntries:    qtcommon.NewQByteArrayFromString("folderEntries"),
+		IsFolderSelected: qtcommon.NewQByteArrayFromString("isFolderSelected"),
+		FolderFromDate:   qtcommon.NewQByteArrayFromString("fromDate"),
+		FolderToDate:     qtcommon.NewQByteArrayFromString("toDate"),
+		TargetFolderID:   qtcommon.NewQByteArrayFromString("targetFolderID"),
+		TargetLabelIDs:   qtcommon.NewQByteArrayFromString("targetLabelIDs"),
+	})
+
+	// basic QAbstractListModel mehods
+	s.ConnectGetCount(s.getCount)
+	s.ConnectRowCount(s.rowCount)
+	s.ConnectColumnCount(func(parent *core.QModelIndex) int { return 1 }) // for list  it should be always 1
+	s.ConnectData(s.data)
+	s.ConnectHeaderData(s.headerData)
+	s.ConnectRoleNames(s.roleNames)
+	// Editable QAbstractListModel needs: https://doc.qt.io/qt-5/model-view-programming.html#an-editable-model
+	s.ConnectSetData(s.setData)
+	s.ConnectFlags(s.flags)
+
+	// Custom FolderStructure slots to export
+
+	// Getters (const)
+	s.ConnectGetID(func(row int) string { return s.get(row).mailbox.Hash() })
+	s.ConnectGetType(func(id string) string { row := s.getRowById(id); return s.get(row).FolderType })
+	s.ConnectGetName(func(id string) string { row := s.getRowById(id); return s.get(row).mailbox.Name })
+	s.ConnectGetColor(func(id string) string { row := s.getRowById(id); return s.get(row).mailbox.Color })
+	s.ConnectGetFrom(func(id string) int64 { row := s.getRowById(id); return s.get(row).FromDate })
+	s.ConnectGetTo(func(id string) int64 { row := s.getRowById(id); return s.get(row).ToDate })
+	s.ConnectGetTargetLabelIDs(func(id string) string { row := s.getRowById(id); return s.get(row).TargetLabelIDs })
+	s.ConnectHasFolderWithName(s.hasFolderWithName)
+	s.ConnectHasTarget(s.hasTarget)
+
+	// Setters (emits DataChanged)
+	s.ConnectSelectType(s.selectType)
+	s.ConnectSetFolderSelection(s.setFolderSelection)
+	s.ConnectSetTargetFolderID(s.setTargetFolderID)
+	s.ConnectAddTargetLabelID(s.addTargetLabelID)
+	s.ConnectRemoveTargetLabelID(s.removeTargetLabelID)
+	s.ConnectSetFromToDate(s.setFromToDate)
+
+	s.GlobalOptions = FolderInfo{
+		mailbox:        transfer.Mailbox{Name: "="},
+		FromDate:       0,
+		ToDate:         0,
+		TargetFolderID: "",
+		TargetLabelIDs: "",
+	}
+}

internal/frontend/qt-ie/folder_structure_test.go

@@ -0,0 +1,65 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	"testing"
+)
+
+func hasNumberOfLabels(tb testing.TB, folder *FolderInfo, expected int) {
+	if current := len(folder.TargetLabelIDList()); current != expected {
+		tb.Error("Folder has wrong number of labels. Expected", expected, "has", current, " labels", folder.TargetLabelIDs)
+	}
+}
+
+func labelStringEquals(tb testing.TB, folder *FolderInfo, expected string) {
+	if current := folder.TargetLabelIDs; current != expected {
+		tb.Error("Folder returned wrong labels. Expected", expected, "has", current, " labels", folder.TargetLabelIDs)
+	}
+}
+
+func TestLabelInfoUniqSet(t *testing.T) {
+	folder := &FolderInfo{}
+	labelStringEquals(t, folder, "")
+	hasNumberOfLabels(t, folder, 0)
+	// add label
+	folder.AddTargetLabel("blah")
+	hasNumberOfLabels(t, folder, 1)
+	labelStringEquals(t, folder, "blah")
+	//
+	folder.AddTargetLabel("blah___")
+	hasNumberOfLabels(t, folder, 2)
+	labelStringEquals(t, folder, "blah;blah___")
+	// add same label
+	folder.AddTargetLabel("blah")
+	hasNumberOfLabels(t, folder, 2)
+	// remove label
+	folder.RemoveTargetLabel("blah")
+	hasNumberOfLabels(t, folder, 1)
+	//
+	folder.AddTargetLabel("blah___")
+	hasNumberOfLabels(t, folder, 1)
+	// remove same label
+	folder.RemoveTargetLabel("blah")
+	hasNumberOfLabels(t, folder, 1)
+	// add again label
+	folder.AddTargetLabel("blah")
+	hasNumberOfLabels(t, folder, 2)
+}

internal/frontend/qt-ie/frontend.go

@@ -0,0 +1,493 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	"errors"
+	"os"
+	"strconv"
+	"time"
+
+	"github.com/ProtonMail/proton-bridge/internal/events"
+	qtcommon "github.com/ProtonMail/proton-bridge/internal/frontend/qt-common"
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/listener"
+
+	"github.com/therecipe/qt/core"
+	"github.com/therecipe/qt/gui"
+	"github.com/therecipe/qt/qml"
+	"github.com/therecipe/qt/widgets"
+
+	"github.com/sirupsen/logrus"
+	"github.com/skratchdot/open-golang/open"
+)
+
+var log = logrus.WithField("pkg", "frontend-qt-ie")
+
+// FrontendQt is API between Import-Export and Qt
+//
+// With this interface it is possible to control Qt-Gui interface using pointers to
+// Qt and QML objects. QML signals and slots are connected via methods of GoQMLInterface.
+type FrontendQt struct {
+	panicHandler  types.PanicHandler
+	config        *config.Config
+	eventListener listener.Listener
+	updates       types.Updater
+	ie            types.ImportExporter
+
+	App      *widgets.QApplication      // Main Application pointer
+	View     *qml.QQmlApplicationEngine // QML engine pointer
+	MainWin  *core.QObject              // Pointer to main window inside QML
+	Qml      *GoQMLInterface            // Object accessible from both Go and QML for methods and signals
+	Accounts qtcommon.Accounts          // Providing data for accounts ListView
+
+	programName    string // Program name
+	programVersion string // Program version
+	buildVersion   string // Program build version
+
+	TransferRules *TransferRules
+	ErrorList     *ErrorListModel // Providing data for error reporting
+
+	transfer *transfer.Transfer
+	progress *transfer.Progress
+
+	notifyHasNoKeychain bool
+}
+
+// New is constructor for Import-Export Qt-Go interface
+func New(
+	version, buildVersion string,
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie types.ImportExporter,
+) *FrontendQt {
+	f := &FrontendQt{
+		panicHandler:   panicHandler,
+		config:         config,
+		programName:    "ProtonMail Import-Export",
+		programVersion: "v" + version,
+		eventListener:  eventListener,
+		buildVersion:   buildVersion,
+		updates:        updates,
+		ie:             ie,
+	}
+
+	log.Debugf("New Qt frontend: %p", f)
+	return f
+}
+
+// IsAppRestarting for Import-Export is always false i.e never restarts
+func (f *FrontendQt) IsAppRestarting() bool {
+	return false
+}
+
+// Loop function for Import-Export interface. It runs QtExecute in main thread
+// with no additional function.
+func (f *FrontendQt) Loop(setupError error) (err error) {
+	if setupError != nil {
+		f.notifyHasNoKeychain = true
+	}
+	go func() {
+		defer f.panicHandler.HandlePanic()
+		f.watchEvents()
+	}()
+	err = f.QtExecute(func(f *FrontendQt) error { return nil })
+	return err
+}
+
+func (f *FrontendQt) watchEvents() {
+	internetOffCh := qtcommon.MakeAndRegisterEvent(f.eventListener, events.InternetOffEvent)
+	internetOnCh := qtcommon.MakeAndRegisterEvent(f.eventListener, events.InternetOnEvent)
+	restartBridgeCh := qtcommon.MakeAndRegisterEvent(f.eventListener, events.RestartBridgeEvent)
+	addressChangedCh := qtcommon.MakeAndRegisterEvent(f.eventListener, events.AddressChangedEvent)
+	addressChangedLogoutCh := qtcommon.MakeAndRegisterEvent(f.eventListener, events.AddressChangedLogoutEvent)
+	logoutCh := qtcommon.MakeAndRegisterEvent(f.eventListener, events.LogoutEvent)
+	updateApplicationCh := qtcommon.MakeAndRegisterEvent(f.eventListener, events.UpgradeApplicationEvent)
+	newUserCh := qtcommon.MakeAndRegisterEvent(f.eventListener, events.UserRefreshEvent)
+	for {
+		select {
+		case <-internetOffCh:
+			f.Qml.SetConnectionStatus(false)
+		case <-internetOnCh:
+			f.Qml.SetConnectionStatus(true)
+		case <-restartBridgeCh:
+			f.Qml.SetIsRestarting(true)
+			f.App.Quit()
+		case address := <-addressChangedCh:
+			f.Qml.NotifyAddressChanged(address)
+		case address := <-addressChangedLogoutCh:
+			f.Qml.NotifyAddressChangedLogout(address)
+		case userID := <-logoutCh:
+			user, err := f.ie.GetUser(userID)
+			if err != nil {
+				return
+			}
+			f.Qml.NotifyLogout(user.Username())
+		case <-updateApplicationCh:
+			f.Qml.ProcessFinished()
+			f.Qml.NotifyUpdate()
+		case <-newUserCh:
+			f.Qml.LoadAccounts()
+		}
+	}
+}
+
+func (f *FrontendQt) qtSetupQmlAndStructures() {
+	f.App = widgets.NewQApplication(len(os.Args), os.Args)
+	// view
+	f.View = qml.NewQQmlApplicationEngine(f.App)
+	// Add Go-QML Import-Export
+	f.Qml = NewGoQMLInterface(nil)
+	f.Qml.SetFrontend(f) // provides access
+	f.View.RootContext().SetContextProperty("go", f.Qml)
+
+	// Add AccountsModel
+	f.Accounts.SetupAccounts(f.Qml, f.ie)
+	f.View.RootContext().SetContextProperty("accountsModel", f.Accounts.Model)
+
+	// Add TransferRules structure
+	f.TransferRules = NewTransferRules(nil)
+	f.View.RootContext().SetContextProperty("transferRules", f.TransferRules)
+
+	// Add error list modal
+	f.ErrorList = NewErrorListModel(nil)
+	f.View.RootContext().SetContextProperty("errorList", f.ErrorList)
+	f.Qml.ConnectLoadImportReports(f.ErrorList.load)
+
+	// Import path and load QML files
+	f.View.AddImportPath("qrc:///")
+	f.View.Load(core.NewQUrl3("qrc:/uiie.qml", 0))
+
+	// TODO set the first start flag
+	//log.Error("Get FirstStart: Not implemented")
+	//if prefs.Get(prefs.FirstStart) == "true" {
+	if false {
+		f.Qml.SetIsFirstStart(true)
+	} else {
+		f.Qml.SetIsFirstStart(false)
+	}
+
+	// Notify user about error during initialization.
+	if f.notifyHasNoKeychain {
+		f.Qml.NotifyHasNoKeychain()
+	}
+}
+
+// QtExecute in main for starting Qt application
+//
+// It is needed to have just one Qt application per program (at least per same
+// thread). This functions reads the main user interface defined in QML files.
+// The files are appended to library by Qt-QRC.
+func (f *FrontendQt) QtExecute(Procedure func(*FrontendQt) error) error {
+	qtcommon.QtSetupCoreAndControls(f.programName, f.programVersion)
+	f.qtSetupQmlAndStructures()
+	// Check QML is loaded properly
+	if len(f.View.RootObjects()) == 0 {
+		//return errors.New(errors.ErrQApplication, "QML not loaded properly")
+		return errors.New("QML not loaded properly")
+	}
+	// Obtain main window (need for invoke method)
+	f.MainWin = f.View.RootObjects()[0]
+	// Injected procedure for out-of-main-thread applications
+	if err := Procedure(f); err != nil {
+		return err
+	}
+
+	// List of used packages
+	f.Qml.SetCredits(importexport.Credits)
+	f.Qml.SetFullversion(f.buildVersion)
+
+	// Loop
+	if ret := gui.QGuiApplication_Exec(); ret != 0 {
+		//err := errors.New(errors.ErrQApplication, "Event loop ended with return value: %v", string(ret))
+		err := errors.New("Event loop ended with return value: " + string(ret))
+		log.Warnln("QGuiApplication_Exec: ", err)
+		return err
+	}
+	log.Debug("Closing...")
+	//prefs.Set(prefs.FirstStart, "false")
+	return nil
+}
+
+func (f *FrontendQt) openLogs() {
+	go open.Run(f.config.GetLogDir())
+}
+
+func (f *FrontendQt) openReport() {
+	go open.Run(f.Qml.ImportLogFileName())
+}
+
+func (f *FrontendQt) openDownloadLink() {
+	go open.Run(f.updates.GetDownloadLink())
+}
+
+// sendImportReport sends an anonymized import or export report file to our customer support
+func (f *FrontendQt) sendImportReport(address string) bool { // Todo_: Rename to sendReport?
+	var accname = "No account logged in"
+	if f.Accounts.Model.Count() > 0 {
+		accname = f.Accounts.Model.Get(0).Account()
+	}
+
+	if f.progress == nil {
+		log.Errorln("Failed to send process report: Missing progress")
+		return false
+	}
+
+	report := f.progress.GenerateBugReport()
+
+	if err := f.ie.ReportFile(
+		core.QSysInfo_ProductType(),
+		core.QSysInfo_PrettyProductName(),
+		accname,
+		address,
+		report,
+	); err != nil {
+		log.Errorln("Failed to send process report:", err)
+		return false
+	}
+
+	log.Info("Report send successfully")
+	return true
+}
+
+// sendBug sends a bug report described by user to our customer support
+func (f *FrontendQt) sendBug(description, emailClient, address string) bool {
+	var accname = "No account logged in"
+	if f.Accounts.Model.Count() > 0 {
+		accname = f.Accounts.Model.Get(0).Account()
+	}
+
+	if err := f.ie.ReportBug(
+		core.QSysInfo_ProductType(),
+		core.QSysInfo_PrettyProductName(),
+		description,
+		accname,
+		address,
+		emailClient,
+	); err != nil {
+		log.Errorln("while sendBug:", err)
+		return false
+	}
+
+	return true
+}
+
+// checkInternet is almost idetical to bridge
+func (f *FrontendQt) checkInternet() {
+	f.Qml.SetConnectionStatus(f.ie.CheckConnection() == nil)
+}
+
+func (f *FrontendQt) showError(code int, err error) {
+	f.Qml.SetErrorDescription(err.Error())
+	log.WithField("code", code).Errorln(err.Error())
+	f.Qml.NotifyError(code)
+}
+
+func (f *FrontendQt) emitEvent(evType, msg string) {
+	f.eventListener.Emit(evType, msg)
+}
+
+func (f *FrontendQt) setProgressManager(progress *transfer.Progress) {
+	f.progress = progress
+	f.ErrorList.Progress = progress
+
+	f.Qml.ConnectPauseProcess(func() { progress.Pause("paused") })
+	f.Qml.ConnectResumeProcess(progress.Resume)
+	f.Qml.ConnectCancelProcess(func() {
+		progress.Stop()
+	})
+	f.Qml.SetProgress(0)
+
+	go func() {
+		log.Trace("Start reading updates")
+		defer func() {
+			log.Trace("Finishing reading updates")
+			f.Qml.DisconnectPauseProcess()
+			f.Qml.DisconnectResumeProcess()
+			f.Qml.DisconnectCancelProcess()
+			f.Qml.SetProgress(1)
+			f.progress = nil
+		}()
+
+		updates := progress.GetUpdateChannel()
+		for range updates {
+			if progress.IsStopped() {
+				break
+			}
+			failed, imported, _, _, total := progress.GetCounts()
+			if total != 0 {
+				f.Qml.SetTotal(int(total))
+			}
+			f.Qml.SetProgressFails(int(failed))
+			f.Qml.SetProgressDescription(progress.PauseReason())
+			if total > 0 {
+				newProgress := float32(imported+failed) / float32(total)
+				if newProgress >= 0 && newProgress != f.Qml.Progress() {
+					f.Qml.SetProgress(newProgress)
+					f.Qml.ProgressChanged(newProgress)
+				}
+			}
+		}
+
+		if err := progress.GetFatalError(); err != nil {
+			f.Qml.SetProgressDescription(err.Error())
+		} else {
+			f.Qml.SetProgressDescription("")
+		}
+	}()
+}
+
+// StartUpdate is identical to bridge
+func (f *FrontendQt) StartUpdate() {
+	progress := make(chan updates.Progress)
+	go func() { // Update progress in QML.
+		defer f.panicHandler.HandlePanic()
+		for current := range progress {
+			f.Qml.SetProgress(current.Processed)
+			f.Qml.SetProgressDescription(strconv.Itoa(current.Description))
+			// Error happend
+			if current.Err != nil {
+				log.Error("update progress: ", current.Err)
+				f.Qml.UpdateFinished(true)
+				return
+			}
+			// Finished everything OK.
+			if current.Description >= updates.InfoQuitApp {
+				f.Qml.UpdateFinished(false)
+				time.Sleep(3 * time.Second) // Just notify.
+				f.Qml.SetIsRestarting(current.Description == updates.InfoRestartApp)
+				f.App.Quit()
+				return
+			}
+		}
+	}()
+	go func() {
+		defer f.panicHandler.HandlePanic()
+		f.updates.StartUpgrade(progress)
+	}()
+}
+
+// isNewVersionAvailable is identical to bridge
+// return 0 when local version is fine
+// return 1 when new version is available
+func (f *FrontendQt) isNewVersionAvailable(showMessage bool) {
+	go func() {
+		defer f.Qml.ProcessFinished()
+		isUpToDate, latestVersionInfo, err := f.updates.CheckIsUpToDate()
+		if err != nil {
+			log.Warnln("Cannot retrieve version info: ", err)
+			f.checkInternet()
+			return
+		}
+		f.Qml.SetConnectionStatus(true) // if we are here connection is ok
+		if isUpToDate {
+			f.Qml.SetUpdateState(StatusUpToDate)
+			if showMessage {
+				f.Qml.NotifyVersionIsTheLatest()
+			}
+			return
+		}
+		f.Qml.SetNewversion(latestVersionInfo.Version)
+		f.Qml.SetChangelog(latestVersionInfo.ReleaseNotes)
+		f.Qml.SetBugfixes(latestVersionInfo.ReleaseFixedBugs)
+		f.Qml.SetLandingPage(latestVersionInfo.LandingPage)
+		f.Qml.SetDownloadLink(latestVersionInfo.GetDownloadLink())
+		f.Qml.SetUpdateState(StatusNewVersionAvailable)
+	}()
+}
+
+func (f *FrontendQt) resetSource() {
+	if f.transfer != nil {
+		f.transfer.ResetRules()
+		if err := f.loadStructuresForImport(); err != nil {
+			log.WithError(err).Error("Cannot reload structures after reseting rules.")
+		}
+	}
+}
+
+// getLocalVersionInfo is identical to bridge.
+func (f *FrontendQt) getLocalVersionInfo() {
+	defer f.Qml.ProcessFinished()
+	localVersion := f.updates.GetLocalVersion()
+	f.Qml.SetNewversion(localVersion.Version)
+	f.Qml.SetChangelog(localVersion.ReleaseNotes)
+	f.Qml.SetBugfixes(localVersion.ReleaseFixedBugs)
+}
+
+// LeastUsedColor is intended to return color for creating a new inbox or label.
+func (f *FrontendQt) leastUsedColor() string {
+	if f.transfer == nil {
+		log.Warnln("Getting least used color before transfer exist.")
+		return "#7272a7"
+	}
+
+	m, err := f.transfer.TargetMailboxes()
+
+	if err != nil {
+		log.Errorln("Getting least used color:", err)
+		f.showError(errUnknownError, err)
+	}
+
+	return transfer.LeastUsedColor(m)
+}
+
+// createLabelOrFolder performs an IE target mailbox creation.
+func (f *FrontendQt) createLabelOrFolder(email, name, color string, isLabel bool, sourceID string) bool {
+	// Prepare new mailbox.
+	m := transfer.Mailbox{
+		Name:        name,
+		Color:       color,
+		IsExclusive: !isLabel,
+	}
+
+	// Select least used color if no color given.
+	if m.Color == "" {
+		m.Color = f.leastUsedColor()
+	}
+
+	f.TransferRules.BeginResetModel()
+	defer f.TransferRules.EndResetModel()
+
+	// Create mailbox.
+	m, err := f.transfer.CreateTargetMailbox(m)
+	if err != nil {
+		log.Errorln("Folder/Label creating:", err)
+		err = errors.New(name + "\n" + err.Error()) // GUI splits by \n.
+		if isLabel {
+			f.showError(errCreateLabelFailed, err)
+		} else {
+			f.showError(errCreateFolderFailed, err)
+		}
+		return false
+	}
+
+	if sourceID == "-1" {
+		f.transfer.SetGlobalMailbox(&m)
+	} else {
+		f.TransferRules.addTargetID(sourceID, m.Hash())
+	}
+	return true
+}

internal/frontend/qt-ie/frontend_nogui.go

@@ -0,0 +1,55 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build nogui
+
+package qtie
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/listener"
+	"github.com/sirupsen/logrus"
+)
+
+var log = logrus.WithField("pkg", "frontend-nogui") //nolint[gochecknoglobals]
+
+type FrontendHeadless struct{}
+
+func (s *FrontendHeadless) Loop(credentialsError error) error {
+	log.Info("Check status on localhost:8081")
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "IE is running")
+	})
+	return http.ListenAndServe(":8081", nil)
+}
+
+func (s *FrontendHeadless) IsAppRestarting() bool { return false }
+
+func New(
+	version, buildVersion string,
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie types.ImportExporter,
+) *FrontendHeadless {
+	return &FrontendHeadless{}
+}

internal/frontend/qt-ie/import.go

@@ -0,0 +1,89 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	"github.com/pkg/errors"
+
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+)
+
+// wrapper for QML
+func (f *FrontendQt) setupAndLoadForImport(isFromIMAP bool, sourcePath, sourceEmail, sourcePassword, sourceServer, sourcePort, targetAddress string) {
+	errCode := errUnknownError
+	var err error
+	defer func() {
+		if err != nil {
+			f.showError(errCode, err)
+			f.Qml.ImportStructuresLoadFinished(false)
+		} else {
+			f.Qml.ImportStructuresLoadFinished(true)
+		}
+	}()
+
+	if isFromIMAP {
+		f.transfer, err = f.ie.GetRemoteImporter(targetAddress, sourceEmail, sourcePassword, sourceServer, sourcePort)
+		if err != nil {
+			switch {
+			case errors.Is(err, &transfer.ErrIMAPConnection{}):
+				errCode = errWrongServerPathOrPort
+			case errors.Is(err, &transfer.ErrIMAPAuth{}):
+				errCode = errWrongLoginOrPassword
+			case errors.Is(err, &transfer.ErrIMAPAuthMethod{}):
+				errCode = errWrongAuthMethod
+			default:
+				errCode = errRemoteSourceLoadFailed
+			}
+			return
+		}
+	} else {
+		f.transfer, err = f.ie.GetLocalImporter(targetAddress, sourcePath)
+		if err != nil {
+			// The only error can be problem to load PM user and address.
+			errCode = errPMLoadFailed
+			return
+		}
+	}
+
+	if err := f.loadStructuresForImport(); err != nil {
+		return
+	}
+}
+
+func (f *FrontendQt) loadStructuresForImport() error {
+	f.TransferRules.setTransfer(f.transfer)
+
+	return nil
+}
+
+func (f *FrontendQt) StartImport(email string) { // TODO email not needed
+	log.Trace("Starting import")
+
+	f.Qml.SetProgressDescription("init") // TODO use const
+	f.Qml.SetProgressFails(0)
+	f.Qml.SetProgress(0.0)
+	f.Qml.SetTotal(1)
+	f.Qml.SetImportLogFileName("")
+
+	progress := f.transfer.Start()
+
+	f.Qml.SetImportLogFileName(progress.FileReport())
+	f.setProgressManager(progress)
+}

internal/frontend/qt-ie/mbox.go

@@ -0,0 +1,185 @@
+// Copyright (c) 2020 Proton Technologies AG
+
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	qtcommon "github.com/ProtonMail/proton-bridge/internal/frontend/qt-common"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/sirupsen/logrus"
+	"github.com/therecipe/qt/core"
+)
+
+// MboxList is an interface between QML and targets for given rule.
+type MboxList struct {
+	core.QAbstractListModel
+
+	containsFolders bool // Provides only folders if true. On the other hand provides only labels if false
+	transfer        *transfer.Transfer
+	rule            *transfer.Rule
+	log             *logrus.Entry
+
+	_ int `property:"selectedIndex"`
+
+	_ func() `constructor:"init"`
+}
+
+func init() {
+	// This is needed so the type exists in QML files.
+	MboxList_QRegisterMetaType()
+}
+
+func newMboxList(t *TransferRules, rule *transfer.Rule, containsFolders bool) *MboxList {
+	m := NewMboxList(t)
+	m.BeginResetModel()
+	m.transfer = t.transfer
+	m.rule = rule
+	m.containsFolders = containsFolders
+	m.log = log.
+		WithField("rule", m.rule.SourceMailbox.Hash()).
+		WithField("folders", m.containsFolders)
+	m.updateSelectedIndex()
+	m.EndResetModel()
+	return m
+}
+
+func (m *MboxList) init() {
+	m.ConnectRowCount(m.rowCount)
+	m.ConnectRoleNames(m.roleNames)
+	m.ConnectData(m.data)
+}
+
+func (m *MboxList) rowCount(index *core.QModelIndex) int {
+	return len(m.targetMailboxes())
+}
+
+func (m *MboxList) roleNames() map[int]*core.QByteArray {
+	return map[int]*core.QByteArray{
+		MboxIsActive: qtcommon.NewQByteArrayFromString("isActive"),
+		MboxID:       qtcommon.NewQByteArrayFromString("mboxID"),
+		MboxName:     qtcommon.NewQByteArrayFromString("name"),
+		MboxType:     qtcommon.NewQByteArrayFromString("type"),
+		MboxColor:    qtcommon.NewQByteArrayFromString("iconColor"),
+	}
+}
+
+func (m *MboxList) data(index *core.QModelIndex, role int) *core.QVariant {
+	allTargets := m.targetMailboxes()
+
+	i := index.Row()
+	log := m.log.WithField("row", i).WithField("role", role)
+	log.Trace("Mbox data")
+
+	if i >= len(allTargets) {
+		log.Warning("Invalid index")
+		return core.NewQVariant()
+	}
+
+	if m.transfer == nil {
+		log.Warning("Requested mbox list data before transfer is connected")
+		return qtcommon.NewQVariantString("")
+	}
+
+	mbox := allTargets[i]
+
+	switch role {
+
+	case MboxIsActive:
+		for _, selectedMailbox := range m.rule.TargetMailboxes {
+			if selectedMailbox.Hash() == mbox.Hash() {
+				return qtcommon.NewQVariantBool(true)
+			}
+		}
+		return qtcommon.NewQVariantBool(false)
+
+	case MboxID:
+		return qtcommon.NewQVariantString(mbox.Hash())
+
+	case MboxName, int(core.Qt__DisplayRole):
+		return qtcommon.NewQVariantString(mbox.Name)
+
+	case MboxType:
+		t := "label"
+		if mbox.IsExclusive {
+			t = "folder"
+		}
+		return qtcommon.NewQVariantString(t)
+
+	case MboxColor:
+		return qtcommon.NewQVariantString(mbox.Color)
+
+	default:
+		log.Error("Requested mbox list data with unknown role")
+		return qtcommon.NewQVariantString("")
+	}
+}
+
+func (m *MboxList) targetMailboxes() []transfer.Mailbox {
+	if m.transfer == nil {
+		m.log.Warning("Requested target mailboxes before transfer is connected")
+	}
+
+	mailboxes, err := m.transfer.TargetMailboxes()
+	if err != nil {
+		m.log.WithError(err).Error("Unable to get target mailboxes")
+	}
+
+	return m.filter(mailboxes)
+}
+
+func (m *MboxList) filter(mailboxes []transfer.Mailbox) (filtered []transfer.Mailbox) {
+	for _, mailbox := range mailboxes {
+		if mailbox.IsExclusive == m.containsFolders {
+			filtered = append(filtered, mailbox)
+		}
+	}
+	return
+}
+
+func (m *MboxList) itemsChanged(rule *transfer.Rule) {
+	m.rule = rule
+	allTargets := m.targetMailboxes()
+
+	m.log.WithField("count", len(allTargets)).Trace("Mbox items changed")
+
+	m.updateSelectedIndex()
+
+	// NOTE: Be careful with indices: If they are invalid the DataChanged
+	// signal will not be sent to QML e.g. `end == rowCount - 1`
+	if len(allTargets) > 0 {
+		begin := m.Index(0, 0, core.NewQModelIndex())
+		end := m.Index(len(allTargets)-1, 0, core.NewQModelIndex())
+		changedRoles := []int{MboxIsActive}
+		m.DataChanged(begin, end, changedRoles)
+	}
+}
+
+func (m *MboxList) updateSelectedIndex() {
+	allTargets := m.targetMailboxes()
+	for index, targetMailbox := range allTargets {
+		for _, selectedTarget := range m.rule.TargetMailboxes {
+			if targetMailbox.Hash() == selectedTarget.Hash() {
+				m.SetSelectedIndex(index)
+				return
+			}
+		}
+	}
+	m.SetSelectedIndex(-1)
+}

internal/frontend/qt-ie/notification.go

@@ -17,22 +17,16 @@
 
 // +build !nogui
 
-package qt
+package qtie
 
-//#include "logs.h"
-import "C"
-
-import (
-	"github.com/sirupsen/logrus"
+const (
+	TabGlobal     = 0
+	TabSettings   = 1
+	TabHelp       = 2
+	TabQuit       = 4
+	TabAddAccount = -1
 )
 
-func installMessageHandler() {
-	C.InstallMessageHandler()
-}
-
-//export logMsgPacked
-func logMsgPacked(data *C.char, len C.int) {
-	log.WithFields(logrus.Fields{
-		"pkg": "frontend-qml",
-	}).Warnln(C.GoStringN(data, len))
+func (s *FrontendQt) SendNotification(tabIndex int, msg string) {
+	s.Qml.NotifyBubble(tabIndex, msg)
 }

internal/frontend/qt-ie/path_status.go

@@ -0,0 +1,83 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+// PathStatus maps folder properties to flag
+type PathStatus int
+
+// Definition of PathStatus flags
+const (
+	PathOK PathStatus = 1 << iota
+	PathEmptyPath
+	PathWrongPath
+	PathNotADir
+	PathWrongPermissions
+	PathDirEmpty
+)
+
+// CheckPathStatus return PathStatus flag as int
+func CheckPathStatus(path string) int {
+	stat := PathStatus(0)
+	// path is not empty
+	if path == "" {
+		stat |= PathEmptyPath
+		return int(stat)
+	}
+	// is dir
+	fi, err := os.Lstat(path)
+	if err != nil {
+		stat |= PathWrongPath
+		return int(stat)
+	}
+	if fi.IsDir() {
+		// can open
+		files, err := ioutil.ReadDir(path)
+		if err != nil {
+			stat |= PathWrongPermissions
+			return int(stat)
+		}
+		// empty folder
+		if len(files) == 0 {
+			stat |= PathDirEmpty
+		}
+		// can write
+		tmpFile := filepath.Join(path, "tmp")
+		for err == nil {
+			tmpFile += "tmp"
+			_, err = os.Lstat(tmpFile)
+		}
+		err = os.Mkdir(tmpFile, 0750)
+		if err != nil {
+			stat |= PathWrongPermissions
+			return int(stat)
+		}
+		_ = os.Remove(tmpFile)
+	} else {
+		stat |= PathNotADir
+	}
+	stat |= PathOK
+	return int(stat)
+}

internal/frontend/qt-ie/transfer_rules.go

@@ -0,0 +1,402 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	qtcommon "github.com/ProtonMail/proton-bridge/internal/frontend/qt-common"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/therecipe/qt/core"
+)
+
+// TransferRules is an interface between QML and transfer.
+type TransferRules struct {
+	core.QAbstractListModel
+
+	transfer *transfer.Transfer
+
+	targetFoldersCache map[string]*MboxList
+	targetLabelsCache  map[string]*MboxList
+
+	_ func() `constructor:"init"`
+
+	_ func(sourceID string) *MboxList                     `slot:"targetFolders,auto"`
+	_ func(sourceID string) *MboxList                     `slot:"targetLabels,auto"`
+	_ func(sourceID string, isActive bool)                `slot:"setIsRuleActive,auto"`
+	_ func(groupName string, isActive bool)               `slot:"setIsGroupActive,auto"`
+	_ func(sourceID string, fromDate int64, toDate int64) `slot:"setFromToDate,auto"`
+	_ func(sourceID string, targetID string)              `slot:"addTargetID,auto"`
+	_ func(sourceID string, targetID string)              `slot:"removeTargetID,auto"`
+
+	// globalFromDate and globalToDate is just default value for GUI, always zero.
+	_ int  `property:"globalFromDate"`
+	_ int  `property:"globalToDate"`
+	_ bool `property:"isLabelGroupSelected"`
+	_ bool `property:"isFolderGroupSelected"`
+}
+
+func init() {
+	// This is needed so the type exists in QML files.
+	TransferRules_QRegisterMetaType()
+}
+
+func (t *TransferRules) init() {
+	log.Trace("Initializing transfer rules")
+
+	t.targetFoldersCache = make(map[string]*MboxList)
+	t.targetLabelsCache = make(map[string]*MboxList)
+
+	t.SetGlobalFromDate(0)
+	t.SetGlobalToDate(0)
+
+	t.ConnectRowCount(t.rowCount)
+	t.ConnectRoleNames(t.roleNames)
+	t.ConnectData(t.data)
+}
+
+func (t *TransferRules) rowCount(index *core.QModelIndex) int {
+	if t.transfer == nil {
+		return 0
+	}
+	return len(t.transfer.GetRules())
+}
+
+func (t *TransferRules) roleNames() map[int]*core.QByteArray {
+	return map[int]*core.QByteArray{
+		MboxIsActive:          qtcommon.NewQByteArrayFromString("isActive"),
+		MboxID:                qtcommon.NewQByteArrayFromString("mboxID"),
+		MboxName:              qtcommon.NewQByteArrayFromString("name"),
+		MboxType:              qtcommon.NewQByteArrayFromString("type"),
+		MboxColor:             qtcommon.NewQByteArrayFromString("iconColor"),
+		RuleTargetLabelColors: qtcommon.NewQByteArrayFromString("labelColors"),
+		RuleFromDate:          qtcommon.NewQByteArrayFromString("fromDate"),
+		RuleToDate:            qtcommon.NewQByteArrayFromString("toDate"),
+	}
+}
+
+func (t *TransferRules) data(index *core.QModelIndex, role int) *core.QVariant {
+	i := index.Row()
+	allRules := t.transfer.GetRules()
+
+	log := log.WithField("row", i).WithField("role", role)
+	log.Trace("Transfer rules data")
+
+	if i >= len(allRules) {
+		log.Warning("Invalid index")
+		return core.NewQVariant()
+	}
+
+	if t.transfer == nil {
+		log.Warning("Requested transfer rules data before transfer is connected")
+		return qtcommon.NewQVariantString("")
+	}
+
+	rule := allRules[i]
+
+	switch role {
+	case MboxIsActive:
+		return qtcommon.NewQVariantBool(rule.Active)
+
+	case MboxID:
+		return qtcommon.NewQVariantString(rule.SourceMailbox.Hash())
+
+	case MboxName:
+		return qtcommon.NewQVariantString(rule.SourceMailbox.Name)
+
+	case MboxType:
+		if rule.SourceMailbox.IsSystemFolder() {
+			return qtcommon.NewQVariantString(FolderTypeSystem)
+		}
+		if rule.SourceMailbox.IsExclusive {
+			return qtcommon.NewQVariantString(FolderTypeFolder)
+		}
+		return qtcommon.NewQVariantString(FolderTypeLabel)
+
+	case MboxColor:
+		return qtcommon.NewQVariantString(rule.SourceMailbox.Color)
+
+	case RuleTargetLabelColors:
+		colors := ""
+		for _, m := range rule.TargetMailboxes {
+			if m.IsExclusive {
+				continue
+			}
+			if colors != "" {
+				colors += ";"
+			}
+			colors += m.Color
+		}
+		return qtcommon.NewQVariantString(colors)
+
+	case RuleFromDate:
+		return qtcommon.NewQVariantLong(rule.FromTime)
+
+	case RuleToDate:
+		return qtcommon.NewQVariantLong(rule.ToTime)
+
+	default:
+		log.Error("Requested transfer rules data with unknown role")
+		return qtcommon.NewQVariantString("")
+	}
+}
+
+func (t *TransferRules) setTransfer(transfer *transfer.Transfer) {
+	log.Debug("Setting transfer")
+	t.BeginResetModel()
+	defer t.EndResetModel()
+
+	t.transfer = transfer
+
+	t.targetFoldersCache = make(map[string]*MboxList)
+	t.targetLabelsCache = make(map[string]*MboxList)
+
+	t.updateGroupSelection()
+}
+
+// Getters
+
+func (t *TransferRules) targetFolders(sourceID string) *MboxList {
+	rule := t.getRule(sourceID)
+	if rule == nil {
+		return nil
+	}
+
+	if t.targetFoldersCache[sourceID] == nil {
+		log.WithField("source", sourceID).Debug("New target folder")
+		t.targetFoldersCache[sourceID] = newMboxList(t, rule, true)
+	}
+
+	return t.targetFoldersCache[sourceID]
+}
+
+func (t *TransferRules) targetLabels(sourceID string) *MboxList {
+	rule := t.getRule(sourceID)
+	if rule == nil {
+		return nil
+	}
+
+	if t.targetLabelsCache[sourceID] == nil {
+		log.WithField("source", sourceID).Debug("New target label")
+		t.targetLabelsCache[sourceID] = newMboxList(t, rule, false)
+	}
+
+	return t.targetLabelsCache[sourceID]
+}
+
+// Setters
+
+func (t *TransferRules) setIsGroupActive(groupName string, isActive bool) {
+	log.WithField("group", groupName).WithField("active", isActive).Trace("Setting group as active/inactive")
+
+	wantExclusive := (groupName == FolderTypeFolder)
+	for _, rule := range t.transfer.GetRules() {
+		if rule.SourceMailbox.IsExclusive != wantExclusive {
+			continue
+		}
+		if rule.SourceMailbox.IsSystemFolder() {
+			continue
+		}
+		if rule.Active != isActive {
+			t.setIsRuleActive(rule.SourceMailbox.Hash(), isActive)
+		}
+	}
+}
+
+func (t *TransferRules) setIsRuleActive(sourceID string, isActive bool) {
+	log.WithField("source", sourceID).WithField("active", isActive).Trace("Setting rule as active/inactive")
+
+	rule := t.getRule(sourceID)
+	if rule == nil {
+		return
+	}
+	if isActive {
+		t.setRule(rule.SourceMailbox, rule.TargetMailboxes, rule.FromTime, rule.ToTime, []int{MboxIsActive})
+	} else {
+		t.unsetRule(rule.SourceMailbox)
+	}
+}
+
+func (t *TransferRules) setFromToDate(sourceID string, fromTime int64, toTime int64) {
+	log.WithField("source", sourceID).WithField("fromTime", fromTime).WithField("toTime", toTime).Trace("Setting from and to dates")
+
+	if sourceID == "-1" {
+		t.transfer.SetGlobalTimeLimit(fromTime, toTime)
+		return
+	}
+
+	rule := t.getRule(sourceID)
+	if rule == nil {
+		return
+	}
+	t.setRule(rule.SourceMailbox, rule.TargetMailboxes, fromTime, toTime, []int{RuleFromDate, RuleToDate})
+}
+
+func (t *TransferRules) addTargetID(sourceID string, targetID string) {
+	log.WithField("source", sourceID).WithField("target", targetID).Trace("Adding target")
+
+	rule := t.getRule(sourceID)
+	if rule == nil {
+		return
+	}
+	targetMailboxToAdd := t.getMailbox(t.transfer.TargetMailboxes, targetID)
+	if targetMailboxToAdd == nil {
+		return
+	}
+
+	newTargetMailboxes := []transfer.Mailbox{}
+	found := false
+	for _, targetMailbox := range rule.TargetMailboxes {
+		if targetMailbox.Hash() == targetMailboxToAdd.Hash() {
+			found = true
+		}
+		if !targetMailboxToAdd.IsExclusive || (targetMailboxToAdd.IsExclusive && !targetMailbox.IsExclusive) {
+			newTargetMailboxes = append(newTargetMailboxes, targetMailbox)
+		}
+	}
+	if !found {
+		newTargetMailboxes = append(newTargetMailboxes, *targetMailboxToAdd)
+	}
+	t.setRule(rule.SourceMailbox, newTargetMailboxes, rule.FromTime, rule.ToTime, []int{RuleTargetLabelColors})
+	t.updateTargetSelection(sourceID, targetMailboxToAdd.IsExclusive)
+}
+
+func (t *TransferRules) removeTargetID(sourceID string, targetID string) {
+	log.WithField("source", sourceID).WithField("target", targetID).Trace("Removing target")
+
+	rule := t.getRule(sourceID)
+	if rule == nil {
+		return
+	}
+	targetMailboxToRemove := t.getMailbox(t.transfer.TargetMailboxes, targetID)
+	if targetMailboxToRemove == nil {
+		return
+	}
+
+	newTargetMailboxes := []transfer.Mailbox{}
+	for _, targetMailbox := range rule.TargetMailboxes {
+		if targetMailbox.Hash() != targetMailboxToRemove.Hash() {
+			newTargetMailboxes = append(newTargetMailboxes, targetMailbox)
+		}
+	}
+	t.setRule(rule.SourceMailbox, newTargetMailboxes, rule.FromTime, rule.ToTime, []int{RuleTargetLabelColors})
+	t.updateTargetSelection(sourceID, targetMailboxToRemove.IsExclusive)
+}
+
+// Helpers
+
+// getRule returns rule for given source ID.
+// WARN: Always get new rule after change because previous pointer points to
+// outdated struct with old data.
+func (t *TransferRules) getRule(sourceID string) *transfer.Rule {
+	mailbox := t.getMailbox(t.transfer.SourceMailboxes, sourceID)
+	if mailbox == nil {
+		return nil
+	}
+	return t.transfer.GetRule(*mailbox)
+}
+
+func (t *TransferRules) getMailbox(mailboxesGetter func() ([]transfer.Mailbox, error), sourceID string) *transfer.Mailbox {
+	if t.transfer == nil {
+		log.Warn("Getting mailbox without avaiable transfer")
+		return nil
+	}
+
+	mailboxes, err := mailboxesGetter()
+	if err != nil {
+		log.WithError(err).Error("Failed to get source mailboxes")
+		return nil
+	}
+	for _, mailbox := range mailboxes {
+		if mailbox.Hash() == sourceID {
+			return &mailbox
+		}
+	}
+	log.WithField("source", sourceID).Error("Mailbox not found for source")
+	return nil
+}
+
+func (t *TransferRules) setRule(sourceMailbox transfer.Mailbox, targetMailboxes []transfer.Mailbox, fromTime, toTime int64, changedRoles []int) {
+	if err := t.transfer.SetRule(sourceMailbox, targetMailboxes, fromTime, toTime); err != nil {
+		log.WithError(err).WithField("source", sourceMailbox.Hash()).Error("Failed to set rule")
+	}
+	t.ruleChanged(sourceMailbox, changedRoles)
+}
+
+func (t *TransferRules) unsetRule(sourceMailbox transfer.Mailbox) {
+	t.transfer.UnsetRule(sourceMailbox)
+	t.ruleChanged(sourceMailbox, []int{MboxIsActive})
+}
+
+func (t *TransferRules) ruleChanged(sourceMailbox transfer.Mailbox, changedRoles []int) {
+	allRules := t.transfer.GetRules()
+	for row, rule := range allRules {
+		if rule.SourceMailbox.Hash() != sourceMailbox.Hash() {
+			continue
+		}
+
+		index := t.Index(row, 0, core.NewQModelIndex())
+		if !index.IsValid() || row >= len(allRules) {
+			log.WithField("row", row).Warning("Invalid index")
+			return
+		}
+
+		log.WithField("row", row).Trace("Transfer rule changed")
+		t.DataChanged(index, index, changedRoles)
+		break
+	}
+
+	t.updateGroupSelection()
+}
+
+func (t *TransferRules) updateGroupSelection() {
+	areAllLabelsSelected, areAllFoldersSelected := true, true
+	for _, rule := range t.transfer.GetRules() {
+		if rule.Active {
+			continue
+		}
+		if rule.SourceMailbox.IsSystemFolder() {
+			continue
+		}
+		if rule.SourceMailbox.IsExclusive {
+			areAllFoldersSelected = false
+		} else {
+			areAllLabelsSelected = false
+		}
+
+		if !areAllLabelsSelected && !areAllFoldersSelected {
+			break
+		}
+	}
+
+	t.SetIsLabelGroupSelected(areAllLabelsSelected)
+	t.SetIsFolderGroupSelected(areAllFoldersSelected)
+}
+
+func (t *TransferRules) updateTargetSelection(sourceID string, updateFolderSelect bool) {
+	rule := t.getRule(sourceID)
+	if rule == nil {
+		return
+	}
+
+	if updateFolderSelect {
+		t.targetFolders(rule.SourceMailbox.Hash()).itemsChanged(rule)
+	} else {
+		t.targetLabels(rule.SourceMailbox.Hash()).itemsChanged(rule)
+	}
+}

internal/frontend/qt-ie/types.go

@@ -0,0 +1,25 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+type panicHandler interface {
+	HandlePanic()
+	SendReport(interface{})
+}

internal/frontend/qt-ie/ui.go

@@ -0,0 +1,190 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build !nogui
+
+package qtie
+
+import (
+	"runtime"
+
+	"github.com/therecipe/qt/core"
+)
+
+// GoQMLInterface between go and qml
+//
+// Here we implements all the signals / methods.
+type GoQMLInterface struct {
+	core.QObject
+
+	_ func() `constructor:"init"`
+
+	_ string `property:"currentAddress"`
+	_ string `property:"goos"`
+	_ string `property:"credits"`
+	_ bool   `property:"isFirstStart"`
+	_ bool   `property:"isRestarting"`
+	_ bool   `property:"isConnectionOK"`
+
+	_ string  `property:lastError`
+	_ float32 `property:progress`
+	_ string  `property:progressDescription`
+	_ int     `property:progressFails`
+	_ int     `property:total`
+	_ string  `property:importLogFileName`
+
+	_ string `property:"programTitle"`
+	_ string `property:"newversion"`
+	_ string `property:"fullversion"`
+	_ string `property:"downloadLink"`
+	_ string `property:"landingPage"`
+	_ string `property:"changelog"`
+	_ string `property:"bugfixes"`
+
+	// translations
+	_ string `property:"wrongCredentials"`
+	_ string `property:"wrongMailboxPassword"`
+	_ string `property:"canNotReachAPI"`
+	_ string `property:"credentialsNotRemoved"`
+	_ string `property:"versionCheckFailed"`
+	//
+	_ func(isAvailable bool)   `signal:"setConnectionStatus"`
+	_ func(updateState string) `signal:"setUpdateState"`
+	_ func()                   `slot:"checkInternet"`
+
+	_ func()                 `signal:"processFinished"`
+	_ func(okay bool)        `signal:"exportStructureLoadFinished"`
+	_ func(okay bool)        `signal:"importStructuresLoadFinished"`
+	_ func()                 `signal:"openManual"`
+	_ func(showMessage bool) `signal:"runCheckVersion"`
+	_ func()                 `slot:"getLocalVersionInfo"`
+	_ func()                 `slot:"loadImportReports"`
+
+	_ func() `slot:"quit"`
+	_ func() `slot:"loadAccounts"`
+	_ func() `slot:"openLogs"`
+	_ func() `slot:"openDownloadLink"`
+	_ func() `slot:"openReport"`
+	_ func() `slot:"clearCache"`
+	_ func() `slot:"clearKeychain"`
+	_ func() `signal:"highlightSystray"`
+	_ func() `signal:"normalSystray"`
+
+	_ func(showMessage bool) `slot:"isNewVersionAvailable"`
+	_ func() string          `slot:"getBackendVersion"`
+
+	_ func(description, client, address string) bool                                       `slot:"sendBug"`
+	_ func(address string) bool                                                            `slot:"sendImportReport"`
+	_ func(address string)                                                                 `slot:"loadStructureForExport"`
+	_ func() string                                                                        `slot:"leastUsedColor"`
+	_ func(username string, name string, color string, isLabel bool, sourceID string) bool `slot:"createLabelOrFolder"`
+	_ func(fpath, address, fileType string, attachEncryptedBody bool)                      `slot:"startExport"`
+	_ func(email string)                                                                   `slot:"startImport"`
+	_ func()                                                                               `slot:"resetSource"`
+
+	_ func(isFromIMAP bool, sourcePath, sourceEmail, sourcePassword, sourceServe, sourcePort, targetAddress string) `slot:"setupAndLoadForImport"`
+
+	_ string `property:"progressInit"`
+
+	_ func(path string) int `slot:"checkPathStatus"`
+
+	_ func(evType string, msg string)    `signal:"emitEvent"`
+	_ func(tabIndex int, message string) `signal:"notifyBubble"`
+
+	_ func() `signal:"bubbleClosed"`
+	_ func() `signal:"simpleErrorHappen"`
+	_ func() `signal:"askErrorHappen"`
+	_ func() `signal:"retryErrorHappen"`
+	_ func() `signal:"pauseProcess"`
+	_ func() `signal:"resumeProcess"`
+	_ func() `signal:"cancelProcess"`
+
+	_ func(iAccount int, prefRem bool)      `slot:"deleteAccount"`
+	_ func(iAccount int)                    `slot:"logoutAccount"`
+	_ func(login, password string) int      `slot:"login"`
+	_ func(twoFacAuth string) int           `slot:"auth2FA"`
+	_ func(mailboxPassword string) int      `slot:"addAccount"`
+	_ func(message string, changeIndex int) `signal:"setAddAccountWarning"`
+
+	_ func()               `signal:"notifyVersionIsTheLatest"`
+	_ func()               `signal:"notifyKeychainRebuild"`
+	_ func()               `signal:"notifyHasNoKeychain"`
+	_ func()               `signal:"notifyUpdate"`
+	_ func(accname string) `signal:"notifyLogout"`
+	_ func(accname string) `signal:"notifyAddressChanged"`
+	_ func(accname string) `signal:"notifyAddressChangedLogout"`
+
+	_ func()              `slot:"startUpdate"`
+	_ func(hasError bool) `signal:"updateFinished"`
+
+	// errors
+	_ func()            `signal:"answerRetry"`
+	_ func(all bool)    `signal:"answerSkip"`
+	_ func(errCode int) `signal:"notifyError"`
+	_ string            `property:"errorDescription"`
+}
+
+// Constructor
+func (s *GoQMLInterface) init() {}
+
+// SetFrontend connects all slots and signals from Go to QML
+func (s *GoQMLInterface) SetFrontend(f *FrontendQt) {
+	s.ConnectQuit(f.App.Quit)
+
+	s.ConnectLoadAccounts(f.Accounts.LoadAccounts)
+	s.ConnectOpenLogs(f.openLogs)
+	s.ConnectOpenDownloadLink(f.openDownloadLink)
+	s.ConnectOpenReport(f.openReport)
+	s.ConnectClearCache(f.Accounts.ClearCache)
+	s.ConnectClearKeychain(f.Accounts.ClearKeychain)
+
+	s.ConnectSendBug(f.sendBug)
+	s.ConnectSendImportReport(f.sendImportReport)
+
+	s.ConnectDeleteAccount(f.Accounts.DeleteAccount)
+	s.ConnectLogoutAccount(f.Accounts.LogoutAccount)
+	s.ConnectLogin(f.Accounts.Login)
+	s.ConnectAuth2FA(f.Accounts.Auth2FA)
+	s.ConnectAddAccount(f.Accounts.AddAccount)
+
+	s.SetGoos(runtime.GOOS)
+	s.SetIsRestarting(false)
+	s.SetProgramTitle(f.programName)
+
+	s.ConnectGetLocalVersionInfo(f.getLocalVersionInfo)
+	s.ConnectIsNewVersionAvailable(f.isNewVersionAvailable)
+	s.ConnectGetBackendVersion(func() string {
+		return f.programVersion
+	})
+
+	s.ConnectCheckInternet(f.checkInternet)
+
+	s.ConnectLoadStructureForExport(f.LoadStructureForExport)
+	s.ConnectSetupAndLoadForImport(f.setupAndLoadForImport)
+	s.ConnectResetSource(f.resetSource)
+	s.ConnectLeastUsedColor(f.leastUsedColor)
+	s.ConnectCreateLabelOrFolder(f.createLabelOrFolder)
+
+	s.ConnectStartExport(f.StartExport)
+	s.ConnectStartImport(f.StartImport)
+
+	s.ConnectCheckPathStatus(CheckPathStatus)
+
+	s.ConnectStartUpdate(f.StartUpdate)
+
+	s.ConnectEmitEvent(f.emitEvent)
+}

internal/frontend/qt/Makefile.local

@@ -17,14 +17,14 @@ translate.ts: ${QMLfiles}
 	lupdate -recursive qml/  -ts $@
 
 rcc.cpp: ${QMLfiles} ${Icons} resources.qrc
-	rm -f rcc.cpp rcc.qrc && qtrcc  -o .
+	rm -f rcc.cpp rcc.qrc && qtrcc -o .
 
 
 qmltest:
-	qmltestrunner -eventdelay 500 -import ./qml/
-qmlcheck :  ../qml/ProtonUI/fontawesome.ttf ../qml/ProtonUI/images
+	qmltestrunner -eventdelay 500 -import ../qml/
+qmlcheck:  ../qml/ProtonUI/fontawesome.ttf ../qml/ProtonUI/images
 	qmlscene -I ../qml/ -f ../qml/tst_Gui.qml --quit
-qmlpreview : ../qml/ProtonUI/fontawesome.ttf ../qml/ProtonUI/images
+qmlpreview: ../qml/ProtonUI/fontawesome.ttf ../qml/ProtonUI/images
 	rm -f ../qml/*.qmlc ../qml/BridgeUI/*.qmlc
 	qmlscene -verbose -I ../qml/ -f ../qml/tst_Gui.qml
 	#qmlscene -qmljsdebugger=port:3768,block -verbose -I ../qml/ -f ../qml/tst_Gui.qml

internal/frontend/qt/frontend.go

@@ -40,17 +40,16 @@ import (
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
 	"github.com/ProtonMail/proton-bridge/internal/events"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/autoconfig"
+	"github.com/ProtonMail/proton-bridge/internal/frontend/qt-common"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
 	"github.com/ProtonMail/proton-bridge/internal/preferences"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
 	"github.com/ProtonMail/proton-bridge/pkg/config"
 	"github.com/ProtonMail/proton-bridge/pkg/ports"
 	"github.com/ProtonMail/proton-bridge/pkg/useragent"
-	"github.com/sirupsen/logrus"
-
-	//"github.com/ProtonMail/proton-bridge/pkg/keychain"
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
-	"github.com/ProtonMail/proton-bridge/pkg/updates"
+	"github.com/sirupsen/logrus"
 	"github.com/kardianos/osext"
 	"github.com/skratchdot/open-golang/open"
 	"github.com/therecipe/qt/core"
@@ -151,7 +150,7 @@ func New(
 // InstanceExistAlert is a global warning window indicating an instance already exists.
 func (s *FrontendQt) InstanceExistAlert() {
 	log.Warn("Instance already exists")
-	s.QtSetupCoreAndControls()
+	qtcommon.QtSetupCoreAndControls(s.programName, s.programVer)
 	s.App = widgets.NewQApplication(len(os.Args), os.Args)
 	s.View = qml.NewQQmlApplicationEngine(s.App)
 	s.View.AddImportPath("qrc:///")
@@ -283,28 +282,13 @@ func (s *FrontendQt) InvMethod(method string) error {
 	return nil
 }
 
-// QtSetupCoreAndControls hanldes global setup of Qt.
-// Should be called once per program. Probably once per thread is fine.
-func (s *FrontendQt) QtSetupCoreAndControls() {
-	installMessageHandler()
-	// Core setup.
-	core.QCoreApplication_SetApplicationName(s.programName)
-	core.QCoreApplication_SetApplicationVersion(s.programVer)
-	// High DPI scaling for windows.
-	core.QCoreApplication_SetAttribute(core.Qt__AA_EnableHighDpiScaling, false)
-	// Software OpenGL: to avoid dedicated GPU.
-	core.QCoreApplication_SetAttribute(core.Qt__AA_UseSoftwareOpenGL, true)
-	// Basic style for QuickControls2 objects.
-	//quickcontrols2.QQuickStyle_SetStyle("material")
-}
-
 // qtExecute is the main function for starting the Qt application.
 //
 // It is better to have just one Qt application per program (at least per same
 // thread). This functions reads the main user interface defined in QML files.
 // The files are appended to library by Qt-QRC.
 func (s *FrontendQt) qtExecute(Procedure func(*FrontendQt) error) error {
-	s.QtSetupCoreAndControls()
+	qtcommon.QtSetupCoreAndControls(s.programName, s.programVer)
 	s.App = widgets.NewQApplication(len(os.Args), os.Args)
 	if runtime.GOOS == "linux" { // Fix default font.
 		s.App.SetFont(gui.NewQFont2(FcMatchSans(), 12, int(gui.QFont__Normal), false), "")
@@ -410,7 +394,7 @@ func (s *FrontendQt) isNewVersionAvailable(showMessage bool) {
 	go func() {
 		defer s.panicHandler.HandlePanic()
 		defer s.Qml.ProcessFinished()
-		isUpToDate, latestVersionInfo, err := s.updates.CheckIsBridgeUpToDate()
+		isUpToDate, latestVersionInfo, err := s.updates.CheckIsUpToDate()
 		if err != nil {
 			log.Warn("Can not retrieve version info: ", err)
 			s.checkInternet()
@@ -624,7 +608,7 @@ func (s *FrontendQt) StartUpdate() {
 		defer s.panicHandler.HandlePanic()
 		for current := range progress {
 			s.Qml.SetProgress(current.Processed)
-			s.Qml.SetProgressDescription(current.Description)
+			s.Qml.SetProgressDescription(strconv.Itoa(current.Description))
 			// Error happend
 			if current.Err != nil {
 				log.Error("update progress: ", current.Err)

internal/frontend/qt/resources.qrc

@@ -1,77 +0,0 @@
-<!--This file is process during qtdeploy and resources are added to executable.-->
-<!DOCTYPE RCC>
-<RCC version="1.0">
-    <qresource prefix="ProtonUI">
-        <file alias="qmldir"                           >../qml/ProtonUI/qmldir</file>
-        <file alias="AccessibleButton.qml"             >../qml/ProtonUI/AccessibleButton.qml</file>
-        <file alias="AccessibleText.qml"               >../qml/ProtonUI/AccessibleText.qml</file>
-        <file alias="AccessibleSelectableText.qml"     >../qml/ProtonUI/AccessibleSelectableText.qml</file>
-        <file alias="AccountView.qml"                  >../qml/ProtonUI/AccountView.qml</file>
-        <file alias="AddAccountBar.qml"                >../qml/ProtonUI/AddAccountBar.qml</file>
-        <file alias="BubbleNote.qml"                   >../qml/ProtonUI/BubbleNote.qml</file>
-        <file alias="BugReportWindow.qml"              >../qml/ProtonUI/BugReportWindow.qml</file>
-        <file alias="ButtonIconText.qml"               >../qml/ProtonUI/ButtonIconText.qml</file>
-        <file alias="ButtonRounded.qml"                >../qml/ProtonUI/ButtonRounded.qml</file>
-        <file alias="CheckBoxLabel.qml"                >../qml/ProtonUI/CheckBoxLabel.qml</file>
-        <file alias="ClickIconText.qml"                >../qml/ProtonUI/ClickIconText.qml</file>
-        <file alias="Dialog.qml"                       >../qml/ProtonUI/Dialog.qml</file>
-        <file alias="DialogAddUser.qml"                >../qml/ProtonUI/DialogAddUser.qml</file>
-        <file alias="DialogUpdate.qml"                 >../qml/ProtonUI/DialogUpdate.qml</file>
-        <file alias="DialogConnectionTroubleshoot.qml" >../qml/ProtonUI/DialogConnectionTroubleshoot.qml</file>
-        <file alias="FileAndFolderSelect.qml"          >../qml/ProtonUI/FileAndFolderSelect.qml</file>
-        <file alias="InformationBar.qml"               >../qml/ProtonUI/InformationBar.qml</file>
-        <file alias="InputField.qml"                   >../qml/ProtonUI/InputField.qml</file>
-        <file alias="InstanceExistsWindow.qml"         >../qml/ProtonUI/InstanceExistsWindow.qml</file>
-        <file alias="LogoHeader.qml"                   >../qml/ProtonUI/LogoHeader.qml</file>
-        <file alias="PopupMessage.qml"                 >../qml/ProtonUI/PopupMessage.qml</file>
-        <file alias="Style.qml"                        >../qml/ProtonUI/Style.qml</file>
-        <file alias="TabButton.qml"                    >../qml/ProtonUI/TabButton.qml</file>
-        <file alias="TabLabels.qml"                    >../qml/ProtonUI/TabLabels.qml</file>
-        <file alias="TextLabel.qml"                    >../qml/ProtonUI/TextLabel.qml</file>
-        <file alias="TextValue.qml"                    >../qml/ProtonUI/TextValue.qml</file>
-        <file alias="TLSCertPinIssueBar.qml"           >../qml/ProtonUI/TLSCertPinIssueBar.qml</file>
-        <file alias="WindowTitleBar.qml"               >../qml/ProtonUI/WindowTitleBar.qml</file>
-        <file alias="fontawesome.ttf"                  >../share/fontawesome-webfont.ttf</file>
-    </qresource>
-    <qresource prefix="ProtonUI/images">
-        <file alias="systray.png"           >../share/icons/rounded-systray.png</file>
-        <file alias="systray-warn.png"      >../share/icons/rounded-syswarn.png</file>
-        <file alias="systray-error.png"     >../share/icons/rounded-syswarn.png</file>
-        <file alias="systray-mono.png"      >../share/icons/white-systray.png</file>
-        <file alias="systray-warn-mono.png" >../share/icons/white-syswarn.png</file>
-        <file alias="systray-error-mono.png">../share/icons/white-syserror.png</file>
-        <file alias="icon.png"              >../share/icons/rounded-app.png</file>
-        <file alias="pm_logo.png"           >../share/icons/pm_logo.png</file>
-        <file alias="win10_Dash.png"        >../share/icons/win10_Dash.png</file>
-        <file alias="win10_Times.png"       >../share/icons/win10_Times.png</file>
-        <file alias="macos_gray.png"        >../share/icons/macos_gray.png</file>
-        <file alias="macos_red.png"         >../share/icons/macos_red.png</file>
-        <file alias="macos_red_hl.png"      >../share/icons/macos_red_hl.png</file>
-        <file alias="macos_red_dark.png"    >../share/icons/macos_red_dark.png</file>
-        <file alias="macos_yellow.png"      >../share/icons/macos_yellow.png</file>
-        <file alias="macos_yellow_hl.png"   >../share/icons/macos_yellow_hl.png</file>
-        <file alias="macos_yellow_dark.png" >../share/icons/macos_yellow_dark.png</file>
-    </qresource>
-    <qresource prefix="BridgeUI">
-        <file alias="qmldir"                 >../qml/BridgeUI/qmldir</file>
-        <file alias="AccountDelegate.qml"    >../qml/BridgeUI/AccountDelegate.qml</file>
-        <file alias="BubbleMenu.qml"         >../qml/BridgeUI/BubbleMenu.qml</file>
-        <file alias="Credits.qml"            >../qml/BridgeUI/Credits.qml</file>
-        <file alias="DialogFirstStart.qml"   >../qml/BridgeUI/DialogFirstStart.qml</file>
-        <file alias="DialogPortChange.qml"   >../qml/BridgeUI/DialogPortChange.qml</file>
-        <file alias="DialogYesNo.qml"        >../qml/BridgeUI/DialogYesNo.qml</file>
-        <file alias="DialogTLSCertInfo.qml"  >../qml/BridgeUI/DialogTLSCertInfo.qml</file>
-        <file alias="HelpView.qml"           >../qml/BridgeUI/HelpView.qml</file>
-        <file alias="InfoWindow.qml"         >../qml/BridgeUI/InfoWindow.qml</file>
-        <file alias="MainWindow.qml"         >../qml/BridgeUI/MainWindow.qml</file>
-        <file alias="ManualWindow.qml"       >../qml/BridgeUI/ManualWindow.qml</file>
-        <file alias="OutgoingNoEncPopup.qml" >../qml/BridgeUI/OutgoingNoEncPopup.qml</file>
-        <file alias="SettingsView.qml"       >../qml/BridgeUI/SettingsView.qml</file>
-        <file alias="StatusFooter.qml"       >../qml/BridgeUI/StatusFooter.qml</file>
-        <file alias="VersionInfo.qml"        >../qml/BridgeUI/VersionInfo.qml</file>
-    </qresource>
-    <qresource>
-        <file alias="ui.qml" >../qml/Gui.qml</file>
-    </qresource>
-</RCC>
-

internal/frontend/qt/ui.go

@@ -64,7 +64,7 @@ type GoQMLInterface struct {
 	_ string `property:"genericErrSeeLogs"`
 
 	_ float32 `property:"progress"`
-	_ int     `property:"progressDescription"`
+	_ string  `property:"progressDescription"`
 
 	_ func(isAvailable bool)   `signal:"setConnectionStatus"`
 	_ func(updateState string) `signal:"setUpdateState"`

internal/frontend/resources.qrc

@@ -0,0 +1,116 @@
+<!--This file is process during qtdeploy and resources are added to executable.-->
+<!DOCTYPE RCC>
+<RCC version="1.0">
+    <qresource prefix="ProtonUI">
+        <file alias="qmldir"                           >./qml/ProtonUI/qmldir</file>
+        <file alias="AccessibleButton.qml"             >./qml/ProtonUI/AccessibleButton.qml</file>
+        <file alias="AccessibleText.qml"               >./qml/ProtonUI/AccessibleText.qml</file>
+        <file alias="AccessibleSelectableText.qml"     >./qml/ProtonUI/AccessibleSelectableText.qml</file>
+        <file alias="AccountView.qml"                  >./qml/ProtonUI/AccountView.qml</file>
+        <file alias="AddAccountBar.qml"                >./qml/ProtonUI/AddAccountBar.qml</file>
+        <file alias="BubbleNote.qml"                   >./qml/ProtonUI/BubbleNote.qml</file>
+        <file alias="BugReportWindow.qml"              >./qml/ProtonUI/BugReportWindow.qml</file>
+        <file alias="ButtonIconText.qml"               >./qml/ProtonUI/ButtonIconText.qml</file>
+        <file alias="ButtonRounded.qml"                >./qml/ProtonUI/ButtonRounded.qml</file>
+        <file alias="CheckBoxLabel.qml"                >./qml/ProtonUI/CheckBoxLabel.qml</file>
+        <file alias="ClickIconText.qml"                >./qml/ProtonUI/ClickIconText.qml</file>
+        <file alias="Dialog.qml"                       >./qml/ProtonUI/Dialog.qml</file>
+        <file alias="DialogAddUser.qml"                >./qml/ProtonUI/DialogAddUser.qml</file>
+        <file alias="DialogUpdate.qml"                 >./qml/ProtonUI/DialogUpdate.qml</file>
+        <file alias="DialogConnectionTroubleshoot.qml" >./qml/ProtonUI/DialogConnectionTroubleshoot.qml</file>
+        <file alias="FileAndFolderSelect.qml"          >./qml/ProtonUI/FileAndFolderSelect.qml</file>
+        <file alias="InfoToolTip.qml"                  >./qml/ProtonUI/InfoToolTip.qml</file>
+        <file alias="InformationBar.qml"               >./qml/ProtonUI/InformationBar.qml</file>
+        <file alias="InputBox.qml"                     >./qml/ProtonUI/InputBox.qml</file>
+        <file alias="InputField.qml"                   >./qml/ProtonUI/InputField.qml</file>
+        <file alias="InstanceExistsWindow.qml"         >./qml/ProtonUI/InstanceExistsWindow.qml</file>
+        <file alias="LogoHeader.qml"                   >./qml/ProtonUI/LogoHeader.qml</file>
+        <file alias="PopupMessage.qml"                 >./qml/ProtonUI/PopupMessage.qml</file>
+        <file alias="RoundedRectangle.qml"             >./qml/ProtonUI/RoundedRectangle.qml</file>
+        <file alias="Style.qml"                        >./qml/ProtonUI/Style.qml</file>
+        <file alias="TabButton.qml"                    >./qml/ProtonUI/TabButton.qml</file>
+        <file alias="TabLabels.qml"                    >./qml/ProtonUI/TabLabels.qml</file>
+        <file alias="TextLabel.qml"                    >./qml/ProtonUI/TextLabel.qml</file>
+        <file alias="TextValue.qml"                    >./qml/ProtonUI/TextValue.qml</file>
+        <file alias="TLSCertPinIssueBar.qml"           >./qml/ProtonUI/TLSCertPinIssueBar.qml</file>
+        <file alias="WindowTitleBar.qml"               >./qml/ProtonUI/WindowTitleBar.qml</file>
+        <file alias="fontawesome.ttf"                  >./share/fontawesome-webfont.ttf</file>
+    </qresource>
+    <qresource prefix="ProtonUI/images">
+        <file alias="systray.png"           >./share/icons/rounded-systray.png</file>
+        <file alias="systray-warn.png"      >./share/icons/rounded-syswarn.png</file>
+        <file alias="systray-error.png"     >./share/icons/rounded-syswarn.png</file>
+        <file alias="systray-mono.png"      >./share/icons/white-systray.png</file>
+        <file alias="systray-warn-mono.png" >./share/icons/white-syswarn.png</file>
+        <file alias="systray-error-mono.png">./share/icons/white-syserror.png</file>
+        <file alias="icon.png"              >./share/icons/rounded-app.png</file>
+        <file alias="pm_logo.png"           >./share/icons/pm_logo.png</file>
+        <file alias="win10_Dash.png"        >./share/icons/win10_Dash.png</file>
+        <file alias="win10_Times.png"       >./share/icons/win10_Times.png</file>
+        <file alias="macos_gray.png"        >./share/icons/macos_gray.png</file>
+        <file alias="macos_red.png"         >./share/icons/macos_red.png</file>
+        <file alias="macos_red_hl.png"      >./share/icons/macos_red_hl.png</file>
+        <file alias="macos_red_dark.png"    >./share/icons/macos_red_dark.png</file>
+        <file alias="macos_yellow.png"      >./share/icons/macos_yellow.png</file>
+        <file alias="macos_yellow_hl.png"   >./share/icons/macos_yellow_hl.png</file>
+        <file alias="macos_yellow_dark.png" >./share/icons/macos_yellow_dark.png</file>
+    </qresource>
+    <qresource prefix="BridgeUI">
+        <file alias="qmldir"                 >./qml/BridgeUI/qmldir</file>
+        <file alias="AccountDelegate.qml"    >./qml/BridgeUI/AccountDelegate.qml</file>
+        <file alias="BubbleMenu.qml"         >./qml/BridgeUI/BubbleMenu.qml</file>
+        <file alias="Credits.qml"            >./qml/BridgeUI/Credits.qml</file>
+        <file alias="DialogFirstStart.qml"   >./qml/BridgeUI/DialogFirstStart.qml</file>
+        <file alias="DialogPortChange.qml"   >./qml/BridgeUI/DialogPortChange.qml</file>
+        <file alias="DialogYesNo.qml"        >./qml/BridgeUI/DialogYesNo.qml</file>
+        <file alias="DialogTLSCertInfo.qml"  >./qml/BridgeUI/DialogTLSCertInfo.qml</file>
+        <file alias="HelpView.qml"           >./qml/BridgeUI/HelpView.qml</file>
+        <file alias="InfoWindow.qml"         >./qml/BridgeUI/InfoWindow.qml</file>
+        <file alias="MainWindow.qml"         >./qml/BridgeUI/MainWindow.qml</file>
+        <file alias="ManualWindow.qml"       >./qml/BridgeUI/ManualWindow.qml</file>
+        <file alias="OutgoingNoEncPopup.qml" >./qml/BridgeUI/OutgoingNoEncPopup.qml</file>
+        <file alias="SettingsView.qml"       >./qml/BridgeUI/SettingsView.qml</file>
+        <file alias="StatusFooter.qml"       >./qml/BridgeUI/StatusFooter.qml</file>
+        <file alias="VersionInfo.qml"        >./qml/BridgeUI/VersionInfo.qml</file>
+    </qresource>
+    <qresource prefix="ImportExportUI">
+        <file alias="qmldir"                   >./qml/ImportExportUI/qmldir</file>
+        <file alias="AccountDelegate.qml"      >./qml/ImportExportUI/AccountDelegate.qml</file>
+        <file alias="Credits.qml"              >./qml/ImportExportUI/Credits.qml</file>
+        <file alias="DateBox.qml"              >./qml/ImportExportUI/DateBox.qml</file>
+        <file alias="DateInput.qml"            >./qml/ImportExportUI/DateInput.qml</file>
+        <file alias="DateRange.qml"            >./qml/ImportExportUI/DateRange.qml</file>
+        <file alias="DateRangeMenu.qml"        >./qml/ImportExportUI/DateRangeMenu.qml</file>
+        <file alias="DateRangeFunctions.qml"   >./qml/ImportExportUI/DateRangeFunctions.qml</file>
+        <file alias="DialogExport.qml"         >./qml/ImportExportUI/DialogExport.qml</file>
+        <file alias="DialogImport.qml"         >./qml/ImportExportUI/DialogImport.qml</file>
+        <file alias="DialogYesNo.qml"          >./qml/ImportExportUI/DialogYesNo.qml</file>
+        <file alias="ExportStructure.qml"      >./qml/ImportExportUI/ExportStructure.qml</file>
+        <file alias="FilterStructure.qml"      >./qml/ImportExportUI/FilterStructure.qml</file>
+        <file alias="FolderRowButton.qml"      >./qml/ImportExportUI/FolderRowButton.qml</file>
+        <file alias="HelpView.qml"             >./qml/ImportExportUI/HelpView.qml</file>
+        <file alias="IEStyle.qml"              >./qml/ImportExportUI/IEStyle.qml</file>
+        <file alias="ImportDelegate.qml"       >./qml/ImportExportUI/ImportDelegate.qml</file>
+        <file alias="ImportReport.qml"         >./qml/ImportExportUI/ImportReport.qml</file>
+        <file alias="ImportReportCell.qml"     >./qml/ImportExportUI/ImportReportCell.qml</file>
+        <file alias="ImportSourceButton.qml"   >./qml/ImportExportUI/ImportSourceButton.qml</file>
+        <file alias="ImportStructure.qml"      >./qml/ImportExportUI/ImportStructure.qml</file>
+        <file alias="InlineDateRange.qml"      >./qml/ImportExportUI/InlineDateRange.qml</file>
+        <file alias="InlineLabelSelect.qml"    >./qml/ImportExportUI/InlineLabelSelect.qml</file>
+        <file alias="LabelIconList.qml"        >./qml/ImportExportUI/LabelIconList.qml</file>
+        <file alias="MainWindow.qml"           >./qml/ImportExportUI/MainWindow.qml</file>
+        <file alias="OutputFormat.qml"         >./qml/ImportExportUI/OutputFormat.qml</file>
+        <file alias="PopupEditFolder.qml"      >./qml/ImportExportUI/PopupEditFolder.qml</file>
+        <file alias="SelectFolderMenu.qml"     >./qml/ImportExportUI/SelectFolderMenu.qml</file>
+        <file alias="SelectLabelsMenu.qml"     >./qml/ImportExportUI/SelectLabelsMenu.qml</file>
+        <file alias="SettingsView.qml"         >./qml/ImportExportUI/SettingsView.qml</file>
+        <file alias="VersionInfo.qml"          >./qml/ImportExportUI/VersionInfo.qml</file>
+        <file alias="images/folder_open.png"   >./share/icons/folder_open.png</file>
+        <file alias="images/envelope_open.png" >./share/icons/envelope_open.png</file>
+    </qresource>
+    <qresource>
+        <file alias="ui.qml" >./qml/Gui.qml</file>
+        <file alias="uiie.qml" >./qml/GuiIE.qml</file>
+    </qresource>
+</RCC>
+

internal/frontend/share/icons/ie.svg

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 22.1.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Ebene_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 1024 1024" style="enable-background:new 0 0 1024 1024;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#9397CD;}
+	.st1{fill:#262A33;}
+	.st2{fill:#FFFFFF;}
+</style>
+<g>
+	<circle class="st0" cx="512.2" cy="512.1" r="512"/>
+</g>
+<g>
+	<circle class="st1" cx="850" cy="850" r="174"/>
+</g>
+<g>
+	<rect x="797" y="774" class="st2" width="34" height="128"/>
+	<polygon class="st2" points="814,717 751.6,775 876.4,775 	"/>
+</g>
+<g>
+	<rect x="865" y="798" class="st2" width="34" height="128"/>
+	<polygon class="st2" points="882,983 944.4,925 819.6,925 	"/>
+</g>
+<g>
+	<path class="st2" d="M511,263c0,0-136.3-4.5-164.4,146.7v103c0,0,1.2,11,32.2,33.4c31,22.4,111.2,85.4,132.3,85.4
+		c21,0,101.3-63,132.3-85.4c31-22.4,32.2-33.4,32.2-33.4v-103C647.3,258.5,511,263,511,263z M604.3,465.9H511h-93.3v-56.1
+		c18.9-75.1,93.3-76.1,93.3-76.1s74.4,1,93.3,76.1V465.9z"/>
+	<path class="st2" d="M511,654.7c0,0-21.1-2.1-37.7-13.5C456.8,629.7,346.6,551,346.6,551v155.9c0,0,0.9,18.1,20.9,18.1
+		s143.5,0,143.5,0s123.5,0,143.5,0s20.9-18.1,20.9-18.1V551c0,0-110.2,78.8-126.8,90.2C532.1,652.7,511,654.7,511,654.7z"/>
+</g>
+</svg>

internal/frontend/types/types.go

@@ -20,8 +20,10 @@ package types
 
 import (
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
 	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
-	"github.com/ProtonMail/proton-bridge/pkg/updates"
 )
 
 // PanicHandler is an interface of a type that can be used to gracefully handle panics which occur.
@@ -31,7 +33,7 @@ type PanicHandler interface {
 
 // Updater is an interface for handling Bridge upgrades.
 type Updater interface {
-	CheckIsBridgeUpToDate() (isUpToDate bool, latestVersion updates.VersionInfo, err error)
+	CheckIsUpToDate() (isUpToDate bool, latestVersion updates.VersionInfo, err error)
 	GetDownloadLink() string
 	GetLocalVersion() updates.VersionInfo
 	StartUpgrade(currentStatus chan<- updates.Progress)
@@ -41,24 +43,19 @@ type NoEncConfirmator interface {
 	ConfirmNoEncryption(string, bool)
 }
 
-// Bridger is an interface of bridge needed by frontend.
-type Bridger interface {
-	GetCurrentClient() string
-	SetCurrentOS(os string)
+// UserManager is an interface of users needed by frontend.
+type UserManager interface {
 	Login(username, password string) (pmapi.Client, *pmapi.Auth, error)
-	FinishLogin(client pmapi.Client, auth *pmapi.Auth, mailboxPassword string) (BridgeUser, error)
-	GetUsers() []BridgeUser
-	GetUser(query string) (BridgeUser, error)
+	FinishLogin(client pmapi.Client, auth *pmapi.Auth, mailboxPassword string) (User, error)
+	GetUsers() []User
+	GetUser(query string) (User, error)
 	DeleteUser(userID string, clearCache bool) error
-	ReportBug(osType, osVersion, description, accountName, address, emailClient string) error
 	ClearData() error
-	AllowProxy()
-	DisallowProxy()
 	CheckConnection() error
 }
 
-// BridgeUser is an interface of user needed by frontend.
-type BridgeUser interface {
+// User is an interface of user needed by frontend.
+type User interface {
 	ID() string
 	Username() string
 	IsConnected() bool
@@ -70,6 +67,17 @@ type BridgeUser interface {
 	Logout() error
 }
 
+// Bridger is an interface of bridge needed by frontend.
+type Bridger interface {
+	UserManager
+
+	GetCurrentClient() string
+	SetCurrentOS(os string)
+	ReportBug(osType, osVersion, description, accountName, address, emailClient string) error
+	AllowProxy()
+	DisallowProxy()
+}
+
 type bridgeWrap struct {
 	*bridge.Bridge
 }
@@ -81,17 +89,57 @@ func NewBridgeWrap(bridge *bridge.Bridge) *bridgeWrap { //nolint[golint]
 	return &bridgeWrap{Bridge: bridge}
 }
 
-func (b *bridgeWrap) FinishLogin(client pmapi.Client, auth *pmapi.Auth, mailboxPassword string) (BridgeUser, error) {
+func (b *bridgeWrap) FinishLogin(client pmapi.Client, auth *pmapi.Auth, mailboxPassword string) (User, error) {
 	return b.Bridge.FinishLogin(client, auth, mailboxPassword)
 }
 
-func (b *bridgeWrap) GetUsers() (users []BridgeUser) {
+func (b *bridgeWrap) GetUsers() (users []User) {
 	for _, user := range b.Bridge.GetUsers() {
 		users = append(users, user)
 	}
 	return
 }
 
-func (b *bridgeWrap) GetUser(query string) (BridgeUser, error) {
+func (b *bridgeWrap) GetUser(query string) (User, error) {
 	return b.Bridge.GetUser(query)
 }
+
+// ImportExporter is an interface of import-export needed by frontend.
+type ImportExporter interface {
+	UserManager
+
+	GetLocalImporter(string, string) (*transfer.Transfer, error)
+	GetRemoteImporter(string, string, string, string, string) (*transfer.Transfer, error)
+	GetEMLExporter(string, string) (*transfer.Transfer, error)
+	GetMBOXExporter(string, string) (*transfer.Transfer, error)
+	ReportBug(osType, osVersion, description, accountName, address, emailClient string) error
+	ReportFile(osType, osVersion, accountName, address string, logdata []byte) error
+}
+
+type importExportWrap struct {
+	*importexport.ImportExport
+}
+
+// NewImportExportWrap wraps import-export struct into local importExportWrap
+// to implement local interface.
+// The problem is that Import-Export returns the importexport package's User
+// type. Every method which returns User therefore has to be overridden to
+// fulfill the interface.
+func NewImportExportWrap(ie *importexport.ImportExport) *importExportWrap { //nolint[golint]
+	return &importExportWrap{ImportExport: ie}
+}
+
+func (b *importExportWrap) FinishLogin(client pmapi.Client, auth *pmapi.Auth, mailboxPassword string) (User, error) {
+	return b.ImportExport.FinishLogin(client, auth, mailboxPassword)
+}
+
+func (b *importExportWrap) GetUsers() (users []User) {
+	for _, user := range b.ImportExport.GetUsers() {
+		users = append(users, user)
+	}
+	return
+}
+
+func (b *importExportWrap) GetUser(query string) (User, error) {
+	return b.ImportExport.GetUser(query)
+}