fix: disable context menu on right click

1. Remove right-click and touch long-press context menu behavior from
the windowed icon delegate.
2. Simplify input handling in IconItemDelegate by consolidating
interactions into MouseArea events and removing the extra TapHandler-
based menu/click logic.
3. Keep left-click activation behavior intact, while allowing right-
button events to be received without triggering duplicated or unintended
handling paths.
4. Preserve drag image generation only for left-button press when drag-
and-drop is enabled.
5. Adjust launcher item input handling to use TapHandler for mouse
buttons and a separate touchscreen TapHandler for tap activation,
avoiding the previous event-order issue noted in the comment.
6. These changes were necessary to match the updated interaction
requirement that right mouse click and touchscreen long press should
no longer show a context menu, while also reducing conflicting event
processing between MouseArea and TapHandler.

Influence:
1. Verify left-click on an icon still opens or activates the target
item normally.
2. Verify right-click on a windowed icon does not show a context menu
and does not trigger unintended actions.
3. Verify long-press on a touchscreen icon does not show a context menu.
4. Verify drag-and-drop still works correctly when pressing and dragging
with the left mouse button.
5. Verify launcher toggling still works with mouse left-click.
6. Verify launcher toggling still works with touchscreen tap.
7. Regression test mixed input scenarios to ensure MouseArea and
TapHandler no longer produce duplicate triggers or incorrect state
changes.

fix: 禁用右键上下文菜单弹出

1. 移除窗口模式图标代理中的右键和触控长按上下文菜单行为。
2. 简化 IconItemDelegate 的输入处理逻辑，将交互集中到 MouseArea 事件中，
并移除额外基于 TapHandler 的菜单/点击处理逻辑。
3. 保持左键激活行为不变，同时允许接收右键事件，但避免触发重复或非预期的
处理路径。
4. 仅在启用拖拽时的左键按下场景下保留拖拽预览图生成逻辑。
5. 调整 launcheritem 的输入处理，改为使用 TapHandler 处理鼠标按键，并增
加独立的触摸屏 TapHandler 处理点击激活，以规避注释中提到的事件顺序问题。
6. 这些修改是为了满足新的交互要求：鼠标右键和触控屏长按都不再弹出右键菜
单，同时减少 MouseArea 与 TapHandler 并存时的事件冲突。

Influence:
1. 验证左键点击图标后仍能正常打开或激活目标项。
2. 验证右键点击窗口模式图标时不会弹出右键菜单，且不会触发非预期操作。
3. 验证触控屏长按图标时不会弹出右键菜单。
4. 验证使用鼠标左键按下并拖动时，拖拽功能仍然正常。
5. 验证使用鼠标左键点击时，启动器开关功能仍然正常。
6. 验证使用触控屏点击时，启动器开关功能仍然正常。
7. 回归测试混合输入场景，确保 MouseArea 与 TapHandler 不会再产生重复触发
或状态异常。

PMS: BUG-358827
Change-Id: I29e423fa5fa40dd3165417118756d3b143a5fb2d

Author: fly602

qml/windowed/IconItemDelegate.qml

@@ -49,48 +49,27 @@ Control {
             id: mouseArea
             anchors.fill: parent
             hoverEnabled: false
-            acceptedButtons: Qt.LeftButton
             enabled: true
+            acceptedButtons: Qt.LeftButton | Qt.RightButton
             drag.target: root.dndEnabled ? root : null
-
-            // 记录是否是触摸长按导致的，防止在 onClicked 中重复处理
-            property bool isTouchLongPressed: false
-
-            TapHandler {
-                acceptedDevices: PointerDevice.TouchScreen
-                gesturePolicy: TapHandler.DragThreshold
-                onLongPressed: {
-                    mouseArea.isTouchLongPressed = true
-                    root.menuTriggered()
-                }
-            }
-
             onPressed: function (mouse) {
-                if (mouse.button !== Qt.LeftButton) {
-                    mouse.accepted = false
-                    return
-                }
-                isTouchLongPressed = false
-                if (root.dndEnabled) {
+                if (mouse.button === Qt.LeftButton && root.dndEnabled) {
                     appIcon.grabToImage(function(result) {
                         root.Drag.imageSource = result.url;
                     })
                 }
             }
-            onClicked: function(mouse) {
-                if (isTouchLongPressed) {
-                    isTouchLongPressed = false
-                    return
-                }
-
-                if (mouse.button !== Qt.LeftButton) {
-                    return
-                }
-
-                if (!drag.active) {
+            onPressAndHold: function (mouse) {
+                root.menuTriggered()
+            }
+            onClicked: function (mouse) {
+                if (mouse.button === Qt.LeftButton) {
                     root.itemClicked()
+                } else if (mouse.button === Qt.RightButton) {
+                    root.menuTriggered()
                 }
             }
+
         }
         contentItem: Column {
             anchors.fill: parent
@@ -154,21 +133,6 @@ Control {
     }
     background: DebugBounding { }
 
-    TapHandler {
-        acceptedButtons: Qt.RightButton
-        onTapped: {
-            root.menuTriggered()
-        }
-    }
-
-    TapHandler {
-        acceptedButtons: Qt.LeftButton
-        gesturePolicy: TapHandler.WithinBounds
-        onTapped: {
-            root.itemClicked()
-        }
-    }
-
     Keys.onSpacePressed: {
         root.itemClicked()
     }

shell-launcher-applet/package/launcheritem.qml

@@ -379,17 +379,25 @@ AppletItem {
         }
     }
 
-    // FIXME: The TapHandler receives the event after visibleChange, which causes the state to be inverted after synchronization,
-    // causing the launchpad to be displayed again. However, the MouseArea receives the event before visibleChange.
-    MouseArea {
-        id: mouseHandler
-        anchors.fill: parent
-        onClicked: function (mouse) {
-            if (mouse.button === Qt.LeftButton) {
+    TapHandler {
+        id: tapHandler
+        acceptedButtons: Qt.LeftButton | Qt.RightButton
+        gesturePolicy: TapHandler.WithinBounds
+        onTapped: function (eventPoint, buttons) {
+            if (buttons === Qt.LeftButton) {
                 toggleLauncher()
             }
         }
     }
+
+    TapHandler {
+        acceptedButtons: Qt.NoButton
+        acceptedDevices: PointerDevice.TouchScreen
+        gesturePolicy: TapHandler.WithinBounds
+        onTapped: function (eventPoint, buttons) {
+            toggleLauncher()
+        }
+    }
     HoverHandler {
         onHoveredChanged: {
             if (hovered) {