chore: drag out from dock to remove icon

将应用图标拖出任务栏时，即取消固定。

PMS: BUG-284079 BUG-288773
Log:

Author: BLumia

panels/dock/taskmanager/package/AppItem.qml

@@ -31,7 +31,7 @@ Item {
     Drag.hotSpot.x: icon.width / 2
     Drag.hotSpot.y: icon.height / 2
     Drag.dragType: Drag.Automatic
-    Drag.mimeData: { "text/x-dde-dock-dnd-appid": itemId }
+    Drag.mimeData: { "text/x-dde-dock-dnd-appid": itemId, "text/x-dde-dock-dnd-source": "taskbar" }
 
     property bool useColumnLayout: Panel.position % 2
     property int statusIndicatorSize: useColumnLayout ? root.width * 0.72 : root.height * 0.72
@@ -72,7 +72,7 @@ Item {
 
         WindowIndicator {
             id: windowIndicator
-            dotWidth: root.useColumnLayout  ? Math.max(Dock.MAX_DOCK_TASKMANAGER_ICON_SIZE * iconScale / 16, 2) : Math.max(Dock.MAX_DOCK_TASKMANAGER_ICON_SIZE * iconScale / 3, 2) 
+            dotWidth: root.useColumnLayout  ? Math.max(Dock.MAX_DOCK_TASKMANAGER_ICON_SIZE * iconScale / 16, 2) : Math.max(Dock.MAX_DOCK_TASKMANAGER_ICON_SIZE * iconScale / 3, 2)
             dotHeight: root.useColumnLayout ? Math.max(Dock.MAX_DOCK_TASKMANAGER_ICON_SIZE * iconScale / 3, 2) : Math.max(Dock.MAX_DOCK_TASKMANAGER_ICON_SIZE * iconScale / 16, 2)
             windows: root.windows
             displayMode: root.displayMode

panels/dock/taskmanager/package/TaskManager.qml

@@ -59,7 +59,7 @@ ContainmentItem {
                 required property list<string> windows
                 keys: ["text/x-dde-dock-dnd-appid"]
                 z: attention ? -1 : 0
-                property bool visibility: itemId !== launcherDndDropArea.launcherDndDesktopId
+                property bool visibility: itemId !== taskmanager.Applet.desktopIdToAppId(launcherDndDropArea.launcherDndDesktopId)
 
                 states: [
                     State {
@@ -100,13 +100,12 @@ ContainmentItem {
                     menus: delegateRoot.menus
                     windows: delegateRoot.windows
                     visualIndex: delegateRoot.visualIndex
+                    ListView.delayRemove: Drag.active
                     Component.onCompleted: {
                         clickItem.connect(taskmanager.Applet.clickItem)
                     }
-
                     onDragFinished: function() {
-                        // 就算在非法区域松开也更新 Model
-                        taskmanager.Applet.dataModel.moveTo(itemId, visualIndex)
+                        launcherDndDropArea.resetDndState()
                     }
                     anchors.fill: parent // This is mandatory for draggable item center in drop area
                 }
@@ -118,11 +117,19 @@ ContainmentItem {
             anchors.fill: parent
             keys: ["text/x-dde-dock-dnd-appid"]
             property string launcherDndDesktopId: ""
+            property string launcherDndDragSource: ""
+
+            function resetDndState() {
+                launcherDndDesktopId = ""
+                launcherDndDragSource = ""
+            }
+
             onEntered: function(drag) {
                 let desktopId = drag.getDataAsString("text/x-dde-dock-dnd-appid")
-                launcherDndDesktopId = taskmanager.Applet.desktopIdToAppId(desktopId)
+                launcherDndDragSource = drag.getDataAsString("text/x-dde-dock-dnd-source")
+                launcherDndDesktopId = desktopId
                 if (taskmanager.Applet.requestDockByDesktopId(desktopId) === false) {
-                    launcherDndDesktopId = ""
+                    resetDndState()
                 }
             }
 
@@ -133,7 +140,8 @@ ContainmentItem {
                 let cellWidth = Panel.rootObject.dockItemMaxSize
                 let curCell = curX / cellWidth
                 let left = (curX % cellWidth) < (cellWidth / 2)
-                taskmanager.Applet.dataModel.moveTo(launcherDndDesktopId, curCell)
+                let appId = taskmanager.Applet.desktopIdToAppId(launcherDndDesktopId)
+                taskmanager.Applet.dataModel.moveTo(appId, curCell)
             }
 
             onDropped: function(drop) {
@@ -143,12 +151,16 @@ ContainmentItem {
                 let cellWidth = Panel.rootObject.dockItemMaxSize
                 let curCell = curX / cellWidth
                 let left = (curX % cellWidth) < (cellWidth / 2)
-                taskmanager.Applet.dataModel.moveTo(launcherDndDesktopId, curCell)
-                launcherDndDesktopId = ""
+                let appId = taskmanager.Applet.desktopIdToAppId(launcherDndDesktopId)
+                taskmanager.Applet.dataModel.moveTo(appId, curCell)
+                resetDndState()
             }
 
             onExited: function() {
-                launcherDndDesktopId = ""
+                if (launcherDndDesktopId !== "" && launcherDndDragSource !== "taskbar") {
+                    taskmanager.Applet.requestUndockByDesktopId(launcherDndDesktopId)
+                }
+                resetDndState()
             }
         }
     }

panels/dock/taskmanager/taskmanager.cpp

@@ -241,10 +241,16 @@ QString TaskManager::desktopIdToAppId(const QString& desktopId)
     return Q_LIKELY(desktopId.endsWith(".desktop")) ? desktopId.chopped(8) : desktopId;
 }
 
-bool TaskManager::requestDockByDesktopId(const QString& appID)
+bool TaskManager::requestDockByDesktopId(const QString& desktopID)
 {
-    if (appID.startsWith("internal/")) return false;
-    return RequestDock(desktopIdToAppId(appID));
+    if (desktopID.startsWith("internal/")) return false;
+    return RequestDock(desktopIdToAppId(desktopID));
+}
+
+bool TaskManager::requestUndockByDesktopId(const QString& desktopID)
+{
+    if (desktopID.startsWith("internal/")) return false;
+    return RequestUndock(desktopIdToAppId(desktopID));
 }
 
 bool TaskManager::RequestDock(QString appID)

panels/dock/taskmanager/taskmanager.h

@@ -37,7 +37,8 @@ class TaskManager : public DS_NAMESPACE::DContainment
     bool allowForceQuit();
 
     Q_INVOKABLE QString desktopIdToAppId(const QString& desktopId);
-    Q_INVOKABLE bool requestDockByDesktopId(const QString& appID);
+    Q_INVOKABLE bool requestDockByDesktopId(const QString& desktopID);
+    Q_INVOKABLE bool requestUndockByDesktopId(const QString& desktopID);
     Q_INVOKABLE bool RequestDock(QString appID);
     Q_INVOKABLE bool IsDocked(QString appID);
     Q_INVOKABLE bool RequestUndock(QString appID);