fix:Do not drag when dock icon is deleted

任务栏图标删除时取消拖拽状态       (task:13009)

frame/controller/dockitemmanager.cpp

@@ -223,6 +223,10 @@ void DockItemManager::appItemRemoved(AppItem *appItem)
 {
     emit itemRemoved(appItem);
     m_itemList.removeOne(appItem);
+
+    if (appItem->isDragging()) {
+        QDrag::cancel();
+    }
     appItem->deleteLater();
 }
 

frame/controller/dockpluginscontroller.cpp

@@ -25,6 +25,7 @@
 
 #include <QDebug>
 #include <QDir>
+#include <QDrag>
 
 DockPluginsController::DockPluginsController(QObject *parent)
     : AbstractPluginsController(parent)
@@ -85,6 +86,10 @@ void DockPluginsController::itemRemoved(PluginsItemInterface *const itemInter, c
     // do not delete the itemWidget object(specified in the plugin interface)
     item->centralWidget()->setParent(nullptr);
 
+    if (item->isDragging()) {
+        QDrag::cancel();
+    }
+
     // just delete our wrapper object(PluginsItem)
     item->deleteLater();
 }

frame/item/dockitem.cpp

@@ -432,3 +432,8 @@ void DockItem::hideNonModel()
     if (m_popupShown && !PopupWindow->model())
         hidePopup();
 }
+
+bool DockItem::isDragging()
+{
+    return m_draging;
+}

frame/item/dockitem.h

@@ -67,6 +67,7 @@ public slots:
     void hidePopup();
     virtual void setDraging(bool bDrag);
 
+    bool isDragging();
 signals:
     void dragStarted() const;
     void itemDropped(QObject *destination, const QPoint &dropPoint) const;