Revert "Port systray away from QQC1"

This reverts commit d0537bc5e7.

This breaks the layout and has to be reverted for now, pending a
non-regressing port.

applets/systemtray/package/contents/ui/PlasmoidPopupsContainer.qml

@@ -4,9 +4,9 @@
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
-import QtQuick 2.15
+import QtQuick 2.4
 import QtQuick.Layouts 1.1
-import QtQuick.Controls 2.15
+import QtQuick.Controls 1.4
 //needed for units
 import org.kde.plasma.core 2.0 as PlasmaCore
 import org.kde.plasma.components 3.0 as PlasmaComponents3
@@ -55,7 +55,7 @@ StackView {
                 }
             }
 
-            mainStack.replace(activeApplet.fullRepresentationItem, {focus: true}, systemTrayState.expanded ? StackView.Transition : StackView.Immediate);
+            mainStack.replace({item: activeApplet.fullRepresentationItem, immediate: !systemTrayState.expanded, properties: {focus: true}});
         } else {
             mainStack.replace(emptyPage);
         }
@@ -80,55 +80,67 @@ StackView {
         id: emptyPage
     }
 
-    property bool goingLeft: {
-        const unFlipped = systemTrayState.oldVisualIndex < systemTrayState.newVisualIndex
-
-        if (Qt.application.layoutDirection == Qt.LeftToRight) {
-            return unFlipped
-        } else {
-            return !unFlipped
-        }
-    }
-    replaceEnter: Transition {
-        PropertyAnimation {
-            id: xani
-            property: "x"
-            from: root.vertical ? 0 : (mainStack.goingLeft ? mainStack.width : -mainStack.width)
-            to: 0
-            easing.type: Easing.InOutQuad
-            duration: PlasmaCore.Units.shortDuration
+    delegate: StackViewDelegate {
+        id: transitioner
+        function transitionFinished(properties) {
+            properties.exitItem.opacity = 1
         }
-       SequentialAnimation {
-            PropertyAction {
-                property: "opacity"
-                value: 0
+        property bool goingLeft: {
+            const unFlipped = systemTrayState.oldVisualIndex < systemTrayState.newVisualIndex
+
+            if (Qt.application.layoutDirection == Qt.LeftToRight) {
+                return unFlipped
+            } else {
+                return !unFlipped
             }
-            PauseAnimation {
-                duration: root.vertical ? (PlasmaCore.Units.shortDuration/2) : 0
+        }
+        replaceTransition: StackViewTransition {
+            ParallelAnimation {
+                PropertyAnimation {
+                    target: enterItem
+                    property: "x"
+                    from: root.vertical ? 0 : (transitioner.goingLeft ? enterItem.width : -enterItem.width)
+                    to: 0
+                    easing.type: Easing.InOutQuad
+                    duration: PlasmaCore.Units.shortDuration
+                }
+                SequentialAnimation {
+                    PropertyAction {
+                        target: enterItem
+                        property: "opacity"
+                        value: 0
+                    }
+                    PauseAnimation {
+                        duration: root.vertical ? (PlasmaCore.Units.shortDuration/2) : 0
+                    }
+                    PropertyAnimation {
+                        target: enterItem
+                        property: "opacity"
+                        from: 0
+                        to: 1
+                        easing.type: Easing.InOutQuad
+                        duration: (PlasmaCore.Units.shortDuration/2)
+                    }
+                }
             }
-            PropertyAnimation {
-                property: "opacity"
-                from: 0
-                to: 1
-                easing.type: Easing.InOutQuad
-                duration: (PlasmaCore.Units.shortDuration/2)
+            ParallelAnimation {
+                PropertyAnimation {
+                    target: exitItem
+                    property: "x"
+                    from: 0
+                    to: root.vertical ? 0 : (transitioner.goingLeft ? -exitItem.width : exitItem.width)
+                    easing.type: Easing.InOutQuad
+                    duration: PlasmaCore.Units.shortDuration
+                }
+                PropertyAnimation {
+                    target: exitItem
+                    property: "opacity"
+                    from: 1
+                    to: 0
+                    easing.type: Easing.InOutQuad
+                    duration: PlasmaCore.Units.shortDuration/2
+                }
             }
         }
     }
-    replaceExit: Transition {
-        PropertyAnimation {
-            property: "x"
-            from: 0
-            to: root.vertical ? 0 : (mainStack.goingLeft ? -mainStack.width : mainStack.width)
-            easing.type: Easing.InOutQuad
-            duration: PlasmaCore.Units.shortDuration
-        }
-        PropertyAnimation {
-            property: "opacity"
-            from: 1
-            to: 0
-            easing.type: Easing.InOutQuad
-            duration: PlasmaCore.Units.shortDuration/2
-        }
-    }
 }