fix #811,timers to check previews/menus/tooltips

--there were cases that window previews/tasks context menu/
title tooltips were shown at the same time. This patch fixes this
by adding timers to catch these case and show the above on
priority. The priority used is tasks context menu/window
previews/title tooltips

containment/package/contents/ui/main.qml

@@ -1301,6 +1301,10 @@ DragDrop.DropArea {
                 titleTooltipDialog.update();
             }
 
+            if (titleTooltipDialog.visible) {
+                titleTooltipCheckerToNotShowTimer.start();
+            }
+
             if (root.debugModeTimers) {
                 console.log("containment timer: showTitleTooltipTimer called...");
             }
@@ -1325,6 +1329,19 @@ DragDrop.DropArea {
 
         }
     }
+
+    //! Timer to fix #811, rare cases that both a window preview and context menu are
+    //! shown
+    Timer {
+        id: titleTooltipCheckerToNotShowTimer
+        interval: 250
+
+        onTriggered: {
+            if (titleTooltipDialog.visible && latteApplet && (latteApplet.contextMenu || latteApplet.windowPreviewIsShown)) {
+                titleTooltipDialog.visible = false;
+            }
+        }
+    }
     /////END: Title Tooltip///////////
 
     ///////////////BEGIN components

plasmoid/package/contents/ui/main.qml

@@ -137,7 +137,7 @@ Item {
     property bool dockIsHidden: latteDock ? latteDock.dockIsHidden : false
     property bool highlightWindows: latteDock ? latteDock.highlightWindows: plasmoid.configuration.highlightWindows
     property bool indicateAudioStreams: latteDock ? latteDock.indicateAudioStreams : plasmoid.configuration.indicateAudioStreams
-    property bool  mouseWheelActions: latteDock ? latteDock.mouseWheelActions : true
+    property bool mouseWheelActions: latteDock ? latteDock.mouseWheelActions : true
     property bool reverseLinesPosition: latteDock ? latteDock.reverseLinesPosition : plasmoid.configuration.reverseLinesPosition
     property bool dotsOnActive: latteDock ? latteDock.dotsOnActive : plasmoid.configuration.dotsOnActive
     property bool showGlow: latteDock ? latteDock.showGlow : plasmoid.configuration.showGlow
@@ -150,6 +150,7 @@ Item {
     property bool smartLaunchersEnabled: latteDock ? latteDock.smartLaunchersEnabled : plasmoid.configuration.smartLaunchersEnabled
     property bool threeColorsWindows: latteDock ? latteDock.threeColorsWindows : plasmoid.configuration.threeColorsWindows
     property bool titleTooltips: latteDock ? latteDock.titleTooltips : false
+    property alias windowPreviewIsShown: windowsPreviewDlg.visible
 
     property int activeIndicatorType: latteDock ? latteDock.activeIndicatorType : Latte.Dock.LineIndicator
     property int directRenderAnimationTime: latteDock ? latteDock.directRenderAnimationTime : 0
@@ -375,6 +376,12 @@ Item {
         property bool signalSent: false
         property Item activeItem: null
 
+        onVisibleChanged: {
+            if (visible) {
+                windowsPreviewCheckerToNotShowTimer.start();
+            }
+        }
+
         function hide(debug){
             //console.log("on hide event called: "+debug);
 
@@ -442,6 +449,19 @@ Item {
         }
     }
 
+    //! Timer to fix #811, rare cases that both a window preview and context menu are
+    //! shown
+    Timer {
+        id: windowsPreviewCheckerToNotShowTimer
+        interval: 250
+
+        onTriggered: {
+            if (windowsPreviewDlg.visible && root.contextMenu) {
+                windowsPreviewDlg.hide();
+            }
+        }
+    }
+
     //! Timer to fix a crash that when going to Alternative Session through Context Menu,
     //! animations are played during the destruction and because of that Latte.IconItem is crashing.
     //! the timer makes sure that the animations will have ended and then change to alternative