GODT-919 GODT-1022 GODT-947 Logs and signals

+ Added startup logs
+ Added wait group for update notifications
+ Changed hooks in debug and trace level

internal/frontend/qt/frontend.go

@@ -97,6 +97,9 @@ type FrontendQt struct {
 
 	// saving most up-to-date update info to install it manually
 	updateInfo updater.VersionInfo
+
+	initializing       sync.WaitGroup
+	initializationDone sync.Once
 }
 
 // New returns a new Qt frontend for the bridge.
@@ -132,6 +135,10 @@ func New(
 		restarter:         restarter,
 	}
 
+	// Initializing.Done is only called sync.Once. Please keep the increment
+	// set to 1
+	tmp.initializing.Add(1)
+
 	// Nicer string for OS.
 	currentOS := core.QSysInfo_PrettyProductName()
 	bridge.SetCurrentOS(currentOS)
@@ -180,6 +187,8 @@ func (s *FrontendQt) NotifySilentUpdateError(err error) {
 }
 
 func (s *FrontendQt) watchEvents() {
+	s.WaitUntilFrontendIsReady()
+
 	errorCh := s.getEventChannel(events.ErrorEvent)
 	credentialsErrorCh := s.getEventChannel(events.CredentialsErrorEvent)
 	outgoingNoEncCh := s.getEventChannel(events.OutgoingNoEncEvent)
@@ -683,3 +692,14 @@ func (s *FrontendQt) startManualUpdate() {
 		}
 	}()
 }
+
+func (s *FrontendQt) WaitUntilFrontendIsReady() {
+	s.initializing.Wait()
+}
+
+// setGUIIsReady unlocks the WaitFrontendIsReady.
+func (s *FrontendQt) setGUIIsReady() {
+	s.initializationDone.Do(func() {
+		s.initializing.Done()
+	})
+}

internal/frontend/qt/frontend_nogui.go

@@ -48,6 +48,9 @@ func (s *FrontendHeadless) NotifyManualUpdate(update updater.VersionInfo, canIns
 	// NOTE: Save the update somewhere so that it can be installed when user chooses "install now".
 }
 
+func (s *FrontendHeadless) WaitUntilFrontendIsReady() {
+}
+
 func (s *FrontendHeadless) SetVersion(update updater.VersionInfo) {
 }
 

internal/frontend/qt/ui.go

@@ -25,7 +25,7 @@ import (
 	"github.com/therecipe/qt/core"
 )
 
-// Interface between go and qml.
+// GoQMLInterface between go and qml.
 //
 // Here we implement all the signals / methods.
 type GoQMLInterface struct {
@@ -64,6 +64,7 @@ type GoQMLInterface struct {
 	_ func() `slot:"checkAndOpenReleaseNotes"`
 	_ func() `signal:"openReleaseNotesExternally"`
 	_ func() `slot:"startManualUpdate"`
+	_ func() `slot:"guiIsReady"`
 
 	// Translations.
 	_ string `property:"wrongCredentials"`
@@ -170,6 +171,7 @@ func (s *GoQMLInterface) SetFrontend(f *FrontendQt) {
 	s.ConnectClearKeychain(f.clearKeychain)
 	s.ConnectOpenLicenseFile(f.openLicenseFile)
 	s.ConnectStartManualUpdate(f.startManualUpdate)
+	s.ConnectGuiIsReady(f.setGUIIsReady)
 	s.ConnectGetLocalVersionInfo(f.getLocalVersionInfo)
 	s.ConnectCheckForUpdates(f.checkForUpdates)
 	s.ConnectGetIMAPPort(f.getIMAPPort)