fix #176,dont hide tooltip when hovering same task

plasmoid/contents/ui/TaskDelegate.qml

@@ -1036,7 +1036,7 @@ MouseArea{
             repeat: false
 
             onTriggered: {
-                if(mainItemContainer.containsMouse){
+                if(mainItemContainer.containsMouse && toolTipDelegate.parentTask !== mainItemContainer){
                     //console.log("Hovered Timer....");
                     mainItemContainer.preparePreviewWindow(false);
                     windowsPreviewDlg.show();

plasmoid/contents/ui/main.qml

@@ -220,14 +220,19 @@ Item {
                 //it is used to unblock dock hiding
                 root.signalDraggingState(false);
             }
+            //console.log("on hide event called...");
             visible = false;
-            //activeItem = null;
+            activeItem = null;
+
             initializePreviewComponent.createObject(windowsPreviewDlg);
         }
 
         function show(){
+            //console.log("preview show called...");
+            if (activeItem !== toolTipDelegate.parentTask) {
                 //used to initialize windows previews buffers
                 visible = false;
+
                 var tasks = icList.contentItem.children;
 
                 for(var i=0; i<tasks.length; ++i){
@@ -244,9 +249,11 @@ Item {
                     root.signalDraggingState(true);
                 }
 
+                activeItem = toolTipDelegate.parentTask;
                 visible = true;
             }
         }
+    }
 
     //A Timer to delay the initialization of the active item in order
     //to not break then active item animation