We build too many walls and not enough bridges

internal/frontend/qml/ProtonUI/InstanceExistsWindow.qml

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+// 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 ProtonUI 1.0
+
+
+// Main Window
+Window {
+    id:winMain
+
+    // main window appeareance
+    width  : Style.main.width
+    height : Style.main.height
+    flags  : Qt.Window | Qt.Dialog
+    title: qsTr("ProtonMail Bridge", "app title")
+    color  : Style.main.background
+    visible : true
+
+    Text {
+        id: title
+        anchors {
+            horizontalCenter: parent.horizontalCenter
+            top: parent.top
+            topMargin: Style.main.topMargin
+        }
+        font{
+            pointSize: Style.dialog.titleSize * Style.pt
+        }
+        color: Style.main.text
+        text:
+        "<span style='font-family: " + Style.fontawesome.name + "'>" + Style.fa.exclamation_triangle + "</span> " +
+        qsTr ("Warning: Instance exists", "displayed when a version of the app is opened while another is already running")
+    }
+
+    Text {
+        id: message
+        anchors.centerIn : parent
+        horizontalAlignment: Text.AlignHCenter
+        font.pointSize: Style.dialog.fontSize * Style.pt
+        color: Style.main.text
+        width: 2*parent.width/3
+        wrapMode: Text.Wrap
+        text: qsTr("An instance of the ProtonMail Bridge is already running.", "displayed when a version of the app is opened while another is already running") + " " +
+        qsTr("Please close the existing ProtonMail Bridge process before starting a new one.", "displayed when a version of the app is opened while another is already running")+ " " +
+        qsTr("This program will close now.", "displayed when a version of the app is opened while another is already running")
+    }
+
+    ButtonRounded {
+        anchors {
+            horizontalCenter: parent.horizontalCenter
+            bottom: parent.bottom
+            bottomMargin: Style.main.bottomMargin
+        }
+        text: qsTr("Okay", "confirms and dismisses a notification")
+        color_main: Style.dialog.text
+        color_minor: Style.main.textBlue
+        isOpaque: true
+        onClicked: Qt.quit()
+    }
+}
+