fix: fix application tray crash due to parent-child ownership and null

pointer issues

1. Fix crash in DDEindicatorTrayProtocol by using window() instead of
parent() for event filter and content updates
2. Add null pointer checks in DDEindicatorTrayProtocol event filter
3. Fix crash in SniTrayProtocolHandler by using window() instead of
parent() and adding null checks
4. Fix tooltip removal order in TrayPlugin to avoid dangling pointer
references
5. Fix double-delete crash in TrayWidget by not setting handler as child
widget
6. Add null handler checks in TrayWidget showEvent and paintEvent

Log: Fixed application tray crashes when tray items are added/removed

Influence:
1. Test adding and removing multiple tray items
2. Test tray indicator protocol operations
3. Test sni protocol tray operations
4. Test tray widget paint and show events
5. Test tray icon updates and tooltip display
6. Test application tray with various indicator types

feat: 修复应用托盘因父子关系和空指针导致的崩溃问题

1. 修复 DDEindicatorTrayProtocol 中，使用 window() 替代 parent() 进行事
件过滤和内容更新
2. 在 DDEindicatorTrayProtocol 的事件过滤器中添加空指针检查
3. 修复 SniTrayProtocolHandler 中，使用 window() 替代 parent() 并添加空
指针检查
4. 修复 TrayPlugin 中 tooltip 移除顺序，避免悬空指针引用
5. 修复 TrayWidget 中不将 handler 设置为子控件导致的二次删除崩溃
6. 在 TrayWidget 的 showEvent 和 paintEvent 中添加 handler 空指针检查

Log: 修复添加/移除托盘项时应用托盘崩溃的问题

Influence:
1. 测试添加和移除多个托盘项
2. 测试托盘指示协议操作
3. 测试 sni 协议托盘操作
4. 测试托盘控件的绘制和显示事件
5. 测试托盘图标更新和提示信息显示
6. 测试各种指示类型下的应用托盘功能

Author: 18202781743

plugins/application-tray/ddeindicatortrayprotocol.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2024-2026 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2024 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -178,7 +178,7 @@ void DDEindicatorProtocolHandlerPrivate::updateContent()
     Q_Q(DDEindicatorProtocolHandler);
     if (!enabled) return;
 
-    auto widget = static_cast<QWidget*>(q->parent());
+    auto widget = q->window();
 
     if (widget) {
         widget->update();
@@ -333,9 +333,12 @@ bool DDEindicatorProtocolHandler::eventFilter(QObject *watched, QEvent *event)
 {
     Q_D(DDEindicatorProtocolHandler);
 
-    if (watched == parent()) {
+    if (watched == window()) {
         if (event->type() == QEvent::Paint) {
-            auto widget = static_cast<QWidget*>(parent());
+            auto widget = window();
+            if (!widget)
+                return false;
+
             QPainter painter(widget);
             QFontMetrics qfm = QFontMetrics(widget->font());
             QRect tightTextRect = qfm.tightBoundingRect(d->m_text);

plugins/application-tray/sniprotocolhandler.cpp

@@ -328,8 +328,11 @@ bool SniTrayProtocolHandler::eventFilter(QObject *watched, QEvent *event)
                 menu->setFixedSize(menu->sizeHint());
                 menu->winId();
 
-                auto widget = static_cast<QWidget*>(parent());
-                auto plugin = Plugin::EmbedPlugin::get(widget->window()->windowHandle());
+                auto *win = window()->windowHandle();
+                if (!win)
+                    return false;
+
+                auto plugin = Plugin::EmbedPlugin::get(win);
                 auto geometry = plugin->pluginPos();
                 auto pluginPopup = Plugin::PluginPopup::get(menu->windowHandle());
                 pluginPopup->setPluginId("application-tray");

plugins/application-tray/trayplugin.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2024-2026 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2024 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -83,14 +83,18 @@ void TrayPlugin::onTrayhandlerCreatd(QPointer<AbstractTrayProtocolHandler> handl
     m_widget.insert(id, new TrayWidget(handler));
 
     auto remove = [this, id]() {
+        // 清理 tooltip 指针，因为 tooltip widget 是 handler 的成员变量，
+        // 当 handler 被销毁时会被删除，所以需要先从 map 中移除悬空指针
+        m_tooltip.remove(id);
+
         m_proyInter->itemRemoved(this, id);
+
         auto widget = m_widget.value(id);
         if (widget) {
             widget->deleteLater();
         }
 
         m_widget.remove(id);
-        m_tooltip.remove(id);
     };
 
     auto showWidget = [this, handler, id](){

plugins/application-tray/traywidget.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2024 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2024 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -28,7 +28,8 @@ TrayWidget::TrayWidget(QPointer<AbstractTrayProtocolHandler> handler)
     setWindowTitle(m_handler->id());
     setFixedSize(trayIconSize, trayIconSize);
 
-    m_handler->setParent(this);
+    // Note: Do NOT set parent here - handler lifecycle is managed by QSharedPointer
+    // Setting parent would cause double-delete when QSharedPointer destroys the handler
 
     connect(m_handler, &AbstractTrayProtocolHandler::iconChanged, this, [this](){update();});
     connect(m_handler, &AbstractTrayProtocolHandler::overlayIconChanged, this, [this](){update();});
@@ -47,6 +48,9 @@ TrayWidget::~TrayWidget()
 void TrayWidget::showEvent(QShowEvent* event)
 {
     Q_UNUSED(event)
+    if (!m_handler)
+        return;
+
     m_handler->setWindow(window());
     window()->installEventFilter(m_handler);
     window()->setMouseTracking(true);
@@ -56,6 +60,9 @@ void TrayWidget::paintEvent(QPaintEvent* event)
 {
     Q_UNUSED(event)
 
+    if (!m_handler)
+        return;
+
     // TODO: support attentionIcon/overlayIcon
     QPalette palette;
     auto textColor = DGuiApplicationHelper::instance()->themeType() == DGuiApplicationHelper::LightType ? Qt::black : Qt::white;