Report uncaught Python exceptions with a GUI popup

src/gui/Popups/BoxPopup.qml

@@ -21,8 +21,10 @@ HPopup {
     property alias details: details
 
     property string okText: qsTr("OK")
+    property string okIcon: "ok"
     property bool okEnabled: true
     property bool okClicked: false
+    property string cancelText: qsTr("Cancel")
 
 
     Binding on height {
@@ -40,8 +42,8 @@ HPopup {
         clickButtonOnEnter: "ok"
 
         buttonModel: [
-            { name: "ok", text: okText, iconName: "ok", enabled: okEnabled},
-            { name: "cancel", text: qsTr("Cancel"), iconName: "cancel" },
+            { name: "ok", text: okText, iconName: okIcon, enabled: okEnabled},
+            { name: "cancel", text: cancelText, iconName: "cancel" },
         ]
 
         buttonCallbacks: ({

src/gui/Popups/UnexpectedErrorPopup.qml

@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+import QtQuick 2.12
+import QtQuick.Layouts 1.12
+import "../Base"
+
+BoxPopup {
+    summary.text: qsTr("Unexpected error occured: <i>%1</i>").arg(errorType)
+    summary.textFormat: Text.StyledText
+
+    okText: qsTr("Report")
+    okIcon: "report-error"
+    okEnabled: false  // TODO
+    cancelText: qsTr("Ignore")
+    box.focusButton: "cancel"
+
+
+    property string errorType
+    property var errorArguments: []
+    property string traceback: ""
+
+
+    HScrollableTextArea {
+        text: traceback || qsTr("No traceback available")
+        area.readOnly: true
+
+        Layout.fillWidth: true
+    }
+
+    HCheckBox {
+        text: qsTr("Hide this type of error until restart")
+        onCheckedChanged:
+            checked ?
+            window.hideErrorTypes.add(errorType) :
+            window.hideErrorTypes.delete(errorType)
+
+        Layout.fillWidth: true
+    }
+}