fix warnings

containment/package/contents/ui/VisibilityManager.qml

@@ -247,8 +247,12 @@ Item{
     Binding{
         target: latteView
         property: "isTouchingTopViewAndIsBusy"
-        when: latteView
+        when: root.viewIsAvailable
         value: {
+            if (!root.viewIsAvailable) {
+                return false;
+            }
+
             var isTouchingTopScreenEdge = (latteView.y === latteView.screenGeometry.y);
             var hasTopBorder = ((latteView.effects && (latteView.effects.enabledBorders & PlasmaCore.FrameSvg.TopBorder)) > 0);
 
@@ -261,6 +265,10 @@ Item{
         property: "isTouchingBottomViewAndIsBusy"
         when: latteView
         value: {
+            if (!root.viewIsAvailable) {
+                return false;
+            }
+
             var latteBottom = latteView.y + latteView.height;
             var screenBottom = latteView.screenGeometry.y + latteView.screenGeometry.height;
             var isTouchingBottomScreenEdge = (latteBottom === screenBottom);
@@ -514,7 +522,7 @@ Item{
 
     ///test maskArea
     function updateMaskArea() {
-        if (!latteView || blockUpdateMask) {
+        if (!latteView || !root.viewIsAvailable || blockUpdateMask) {
             return;
         }
 
@@ -522,7 +530,7 @@ Item{
         var localY = 0;
 
         normalState = ((animations.needBothAxis.count === 0) && (animations.needLength.count === 0))
-                || (latteView.visibility.isHidden && !latteView.visibility.containsMouse && animations.needThickness.count === 0);
+                || (latteView && latteView.visibility.isHidden && !latteView.visibility.containsMouse && animations.needThickness.count === 0);
 
 
         // debug maskArea criteria
@@ -974,6 +982,10 @@ Item{
         }
 
         function init() {
+            if (!root.viewIsAvailable) {
+                return;
+            }
+
             inSlidingIn = true;
 
             if (slidingAnimationAutoHiddenOut.running) {
@@ -993,7 +1005,7 @@ Item{
         id: slidingInRealFloating
 
         PropertyAnimation {
-            target: latteView.positioner
+            target: latteView ? latteView.positioner : null
             property: "slideOffset"
             to: 0
             duration: manager.animationSpeed
@@ -1005,7 +1017,7 @@ Item{
         id: slidingOutRealFloating
 
         PropertyAnimation {
-            target: latteView.positioner
+            target: latteView ? latteView.positioner : null
             property: "slideOffset"
             to: plasmoid.configuration.screenEdgeMargin
             duration: manager.animationSpeed
@@ -1016,6 +1028,10 @@ Item{
     Connections {
         target: root
         onHideThickScreenGapChanged: {
+            if (!latteView || !root.viewIsAvailable) {
+                return;
+            }
+
             if (root.behaveAsPlasmaPanel && !latteView.visibility.isHidden && !inSlidingIn && !inSlidingOut && !inStartup) {
                 if (hideThickScreenGap) {
                     latteView.positioner.inSlideAnimation = true;

containment/package/contents/ui/layouts/loaders/Tasks.qml

@@ -31,11 +31,11 @@ Loader {
         TaskManager.TasksModel {
             id: tasksModel
             virtualDesktop: virtualDesktopInfo.currentDesktop
-            screenGeometry: latteView.screenGeometry
+            screenGeometry: latteView ? latteView.screenGeometry : Qt.rect(-1, -1, 0, 0)
             activity: activityInfo.currentActivity
 
             filterByVirtualDesktop: true
-            filterByScreen: true
+            filterByScreen:latteView ?  true : false
             filterByActivity: true
 
             launchInPlace: true

containment/package/contents/ui/main.qml

@@ -104,6 +104,8 @@ Item {
 
     readonly property bool behaveAsDockWithMask: !behaveAsPlasmaPanel
 
+    readonly property bool viewIsAvailable: latteView && latteView.visibility && latteView.effects
+
     property int viewType: {
         var staticLayout = (plasmoid.configuration.minLength === plasmoid.configuration.maxLength);
 

indicators/org.kde.latte.plasma/package/ui/FrontLayer.qml

@@ -208,7 +208,7 @@ Item {
                 svg: groupSvg
                 elementId: elementForLocation(plasmoid.location)
 
-                readonly property QtObject groupSvg: indicator.resources.svgs.length > 0 ? indicator.resources.svgs[0] : null
+                readonly property QtObject groupSvg: indicator.resources && indicator.resources.svgs.length > 0 ? indicator.resources.svgs[0] : null
 
                 function elementForLocation(location) {
                     switch (location) {

plasmoid/package/contents/ui/ParabolicManager.qml

@@ -47,11 +47,6 @@ Item {
         updateTasksEdgesIndexes();
     }
 
-    Component.onDestruction: {
-        parManager.sglUpdateLowerItemScale.disconnect(sltTrackLowerItemScale);
-        parManager.sglUpdateHigherItemScale.disconnect(sltTrackHigherItemScale);
-    }
-
     function updateTasksEdgesIndexes() {
         var newFirstTask = firstRealTask();
         var newLastTask = lastRealTask();