feat(taskManager):优化预览图model,当显示时避免因数量改变引起的窗口闪烁问题

widgets/ukui-task-manager/plugin/qml/TaskManagerView.qml

@@ -137,6 +137,38 @@ TaskManager {
                     taskManager.state = "aboutToHideThumbanil";
                 }
             }
+
+            // 更新预览图model数据
+            onCurrentWinIdListChanged: updateThumbnailModel()
+            property var modelList: []
+            ListModel {
+                id: thumbnailModel
+            }
+            function updateThumbnailModel() {
+                // 这里不能直接用=（js中表示引用），需要浅拷贝
+                var listFromModel = modelList.slice(0);
+                var listFromCurrent = currentWinIdList.slice(0);
+                var indexOfRemoveList = [];
+
+                for (var i = 0; i < listFromModel.length; i++) {
+                   if (listFromCurrent.includes(listFromModel[i])) {
+                       listFromCurrent.splice(listFromCurrent.indexOf(listFromModel[i]), 1);
+                   } else {
+                       indexOfRemoveList.push(i);
+                   }
+                }
+                for (var i = indexOfRemoveList.length -1; i > -1; i--) {
+                    listFromModel.splice(indexOfRemoveList[i], 1);
+                    thumbnailModel.remove(indexOfRemoveList[i]);
+                }
+
+                for (var i = 0; i < listFromCurrent.length; i ++) {
+                    listFromModel.push(listFromCurrent[i]);
+                    thumbnailModel.append({"winId": listFromCurrent[i]});
+                }
+
+                modelList = listFromModel;
+            }
         }
     }
 }

widgets/ukui-task-manager/qml/ThumbnailWindow.qml

@@ -188,7 +188,7 @@ MouseArea {
                 baseMouseArea.determineListViewSize()
             }
 
-            model: currentWinIdList
+            model: thumbnailModel
             delegate: MouseArea {
                 id: itemMouseArea
                 width: childrenRect.width
@@ -205,7 +205,7 @@ MouseArea {
                 }
 
                 function activateWindowView() {
-                    var winIds = [modelData];
+                    var winIds = [model.winId];
                     if (baseMouseArea.menuVisible || containsMouse) {
                         activeTimer.interval = 500;
                         activeTimer.activeWinIds = winIds;
@@ -220,20 +220,20 @@ MouseArea {
 
                 onClicked: {
                     if (mouse.button === Qt.RightButton) {
-                        var actions = UkuiTaskManager.TaskManager.windowActions(modelData);
+                        var actions = UkuiTaskManager.TaskManager.windowActions(model.winId);
                         baseMouseArea.menuVisible = taskManager.viewModel.openMenu(true, actions, listView);
                     } else {
-                        UkuiTaskManager.TaskManager.activateWindow(modelData);
+                        UkuiTaskManager.TaskManager.activateWindow(model.winId);
                     }
                 }
                 Loader {
                     WindowThumbnailMprisModel {
                         id: mprisModel
-                        winID: modelData
+                        winID: model.winId
                     }
-                    property string modelData: model.modelData
-                    property var title: windowTitles ? windowTitles[modelData] : ""
-                    property var icon: windowIcons ? windowIcons[modelData] : ""
+                    property string modelData: model.winId
+                    property var title: windowTitles ? windowTitles[model.winId] : ""
+                    property var icon: windowIcons ? windowIcons[model.winId] : ""
                     property var windowThumbnailMprisModel: mprisModel
                     property bool mouseAreaContainsMouse: itemMouseArea.containsMouse
                     property bool mouseAreaContainsPress: itemMouseArea.containsPress