revert back to old way of exposing dockview to ui

-- fixes the engine() issue

containment/contents/ui/VisibilityManager.qml

@@ -36,7 +36,23 @@ Item{
     property int thicknessNormalOriginalValue: statesLineSizeOriginal + plasmoid.configuration.iconSize + iconMarginOriginal + 1
     property int thicknessZoomOriginal: statesLineSizeOriginal + ((plasmoid.configuration.iconSize+iconMarginOriginal) * root.zoomFactor) + 2
 
+
     Binding{
+        //this is way to avoid warnings for null during initialization phase
+        target: dock ? dock.visibility : manager
+        property:"panelVisibility"
+        when: dock && dock.visibility
+        value: plasmoid.configuration.panelVisibility
+    }
+
+    Binding{
+        target: dock ? dock : manager
+        property:"maxThickness"
+        when: dock
+        value: thicknessZoomOriginal
+    }
+
+    /*Binding{
         target: dock.visibility
         property:"panelVisibility"
         value: plasmoid.configuration.panelVisibility
@@ -46,7 +62,7 @@ Item{
         target: dock
         property:"maxThickness"
         value: thicknessZoomOriginal
-    }
+    }*/
 
 
     onInStartupChanged: {
@@ -68,12 +84,12 @@ Item{
     onThicknessZoomOriginalChanged: updateMaskArea();
 
     Component.onCompleted: {
-        dock.visibility.onDisableHidingChanged.connect(slotDisableHidingChanged);
+        /*dock.visibility.onDisableHidingChanged.connect(slotDisableHidingChanged);
         dock.visibility.onIsHoveredChanged.connect(slotIsHoveredChanged);
         dock.visibility.onMustBeLowered.connect(slotMustBeLowered);
         dock.visibility.onMustBeRaised.connect(slotMustBeRaised);
         dock.visibility.onMustBeRaisedImmediately.connect(slotMustBeRaisedImmediately);
-        dock.visibility.onPanelVisibilityChanged.connect(slotPanelVisibilityChanged);
+        dock.visibility.onPanelVisibilityChanged.connect(slotPanelVisibilityChanged);*/
     }
 
 
@@ -134,7 +150,7 @@ Item{
 
     ///test maskArea
     function updateMaskArea() {
-        if (!windowSystem.compositingActive) {
+        if (!windowSystem.compositingActive || !dock) {
             return;
         }
 
@@ -282,10 +298,10 @@ Item{
             }
 
             Rectangle{
-                x: dock.maskArea.x
-                y: dock.maskArea.y
-                height: dock.maskArea.height
-                width: dock.maskArea.width
+                x: dock ? dock.maskArea.x : -1
+                y: dock ? dock.maskArea.y : -1
+                height: dock ? dock.maskArea.height : 0
+                width: dock ? dock.maskArea.width : 0
 
                 border.color: "green"
                 border.width: 1

containment/contents/ui/main.qml

@@ -92,6 +92,7 @@ DragDrop.DropArea {
     property Item toolBox
     property Item nowDockContainer
     property Item nowDock
+    property QtObject dock
 
     // TO BE DELETED, if not needed: property int counter:0;
 
@@ -386,6 +387,17 @@ DragDrop.DropArea {
     //////////////START OF CONNECTIONS
     onAppletsAnimationsChanged: visibilityManager.updateMaskArea();
 
+    onDockChanged: {
+        if (dock) {
+            dock.visibility.onDisableHidingChanged.connect(visibilityManager.slotDisableHidingChanged);
+            dock.visibility.onIsHoveredChanged.connect(visibilityManager.slotIsHoveredChanged);
+            dock.visibility.onMustBeLowered.connect(visibilityManager.slotMustBeLowered);
+            dock.visibility.onMustBeRaised.connect(visibilityManager.slotMustBeRaised);
+            dock.visibility.onMustBeRaisedImmediately.connect(visibilityManager.slotMustBeRaisedImmediately);
+            dock.visibility.onPanelVisibilityChanged.connect(visibilityManager.slotPanelVisibilityChanged);
+        }
+    }
+
     onDragEnter: {
         if (plasmoid.immutable) {
             event.ignore();
@@ -1037,8 +1049,7 @@ DragDrop.DropArea {
 
     VisibilityManager{
         id: visibilityManager
-
-        window: dock
+     //   window: dock
     }
 
     Item{

corona/nowdockview.cpp

@@ -117,7 +117,7 @@ void NowDockView::init()
     connect(this, SIGNAL(heightChanged(int)), this, SIGNAL(heightChanged()));
     
     rootContext()->setContextProperty(QStringLiteral("dock"), this);
-    engine()->rootContext()->setContextProperty(QStringLiteral("dock"), this);
+    // engine()->rootContext()->setContextProperty(QStringLiteral("dock"), this);
     setSource(corona()->kPackage().filePath("nowdockui"));
     
     

shell/contents/views/Panel.qml

@@ -31,6 +31,7 @@ PlasmaCore.FrameSvgItem {
     // onRepaintNeeded: adjustPrefix();
 
     property Item containment
+    property Item dockLayout
 
     readonly property bool verticalPanel: containment && containment.formFactor === PlasmaCore.Types.Vertical
 
@@ -78,9 +79,16 @@ PlasmaCore.FrameSvgItem {
         containment.anchors.fill = containmentParent;
         containment.locationChanged.connect(adjustPrefix);
         adjustPrefix();
+
+        for(var i=0; i<containment.children.length; ++i){
+            if (containment.children[i].objectName === "dockLayoutView") {
+                dockLayout = containment.children[i];
+                dockLayout.dock = dock;
+            }
+        }
     }
 
-    /*Binding {
+    Binding {
         target: dock
         property: "length"
         when: containment
@@ -94,7 +102,7 @@ PlasmaCore.FrameSvgItem {
                 return containment.Layout.preferredWidth
             }
         }
-    }*/
+    }
 
 
     Item {