fix: prevent crashes and memory leaks during object lifecycle

Add batch update flag to suppress intermediate signals during page
navigation, add null checks for parent private pointer in DccObject,
and fix component memory leaks when plugin manager is deleting.

添加批量更新标志以抑制页面导航期间的中间信号发射，
增加 DccObject 父对象私有指针的空检查，修复插件管理器
删除时的组件内存泄漏问题。

Log: 修复对象生命周期中的崩溃和内存泄漏问题
PMS: BUG-335919
Influence: 修复控制中心页面切换过程中可能出现的崩溃问题，
修复插件卸载时的内存泄漏，提升稳定性。

Author: pengfeixx

src/dde-control-center/dccmanager.cpp

@@ -837,6 +837,8 @@ void DccManager::doShowPage(QPointer<DccObject> obj, const QString &cmd)
     if (triggeredObj->pageType() == DccObject::MenuEditor && !triggeredObj->getChildren().isEmpty()) {
         triggeredObj = triggeredObj->getChildren().first();
     }
+
+    m_batchUpdating = true;
     DccObject *tmpObj = triggeredObj;
     tmpObj->setCurrentObject(nullptr);
     tmpObj->active(QString());
@@ -850,6 +852,7 @@ void DccManager::doShowPage(QPointer<DccObject> obj, const QString &cmd)
         tmpObj = tmpObjParent;
     }
     if (!tmpObj) {
+        m_batchUpdating = false;
         return;
     }
     modules.append(tmpObj);
@@ -881,6 +884,8 @@ void DccManager::doShowPage(QPointer<DccObject> obj, const QString &cmd)
     // 更新当前对象
     m_currentObjects = modules;
     m_triggeredObjects = triggeredObjs;
+    m_batchUpdating = false;
+
     Q_EMIT triggeredObjectsChanged(m_triggeredObjects);
     if (auto *lastObj = m_currentObjects.last(); lastObj != m_activeObject) {
         m_activeObject = lastObj;

src/dde-control-center/dccmanager.h

@@ -12,6 +12,7 @@
 #include <QDBusContext>
 #include <QDBusMessage>
 #include <QObject>
+#include <atomic>
 
 QT_BEGIN_NAMESPACE
 class QWindow;
@@ -52,6 +53,8 @@ class DccManager : public DccApp, protected QDBusContext
 
     inline const QVector<DccObject *> &triggeredObjects() const override { return m_triggeredObjects; }
 
+    inline bool isBatchUpdating() const override { return m_batchUpdating; }
+
     Q_INVOKABLE DccApp::UosEdition uosEdition() const;
     Q_INVOKABLE Dtk::Core::DSysInfo::ProductType productType() const;
 
@@ -145,6 +148,7 @@ private Q_SLOTS:
     QDBusMessage m_showMessage;
 
     QHash<QString, QVector<DccObject *>> m_objMap; // 映射对象名称到对象指针列表，用于快速查找
+    std::atomic<bool> m_batchUpdating{false};
 };
 } // namespace dccV25
 #endif // DCCMANAGER_H

src/dde-control-center/plugin/DccLoader.qml

@@ -7,10 +7,17 @@ Loader {
     property Item dccObjItem: null
 
     function updateDccObjItem() {
-        if (dccObj) {
+        if (dccObj && dccObjItem) {
             dccObj.parentItem = dccObjItem
         }
     }
+
+    Component.onDestruction: {
+        if (dccObj && dccObj.parentItem === dccObjItem) {
+            dccObj.parentItem = null
+        }
+    }
+
     enabled: dccObj && dccObj.enabledToApp
     // asynchronous: true
     sourceComponent: dccObj ? dccObj.page : null

src/dde-control-center/plugin/dccapp.h

@@ -62,6 +62,8 @@ class DccApp : public QObject
     virtual void setSidebarWidth(int width);
     virtual void setAnimationMode(AnimationMode mode);
 
+    virtual bool isBatchUpdating() const { return false; }
+
 public Q_SLOTS:
     virtual DccObject *object(const QString &name);
     virtual void addObject(DccObject *obj);

src/dde-control-center/plugin/dccobject.cpp

@@ -3,6 +3,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 #include "dccobject.h"
 
+#include "dccapp.h"
 #include "dccobject_p.h"
 
 #include <QLoggingCategory>
@@ -45,7 +46,7 @@ DccObject::Private::~Private()
         m_page->deleteLater();
         m_page = nullptr;
     }
-    if (m_parent) {
+    if (m_parent && m_parent->p_ptr) {
         m_parent->p_ptr->removeChild(q_ptr);
     }
     while (!m_children.isEmpty()) {
@@ -177,7 +178,7 @@ const QVector<DccObject *> &DccObject::Private::getChildren() const
 
 int DccObject::Private::getIndex() const
 {
-    return m_parent ? m_parent->p_ptr->getChildren().indexOf(q_ptr) : -1;
+    return (m_parent && m_parent->p_ptr) ? m_parent->p_ptr->getChildren().indexOf(q_ptr) : -1;
 }
 
 DccObject *DccObject::Private::getChild(int childPos) const
@@ -295,7 +296,7 @@ void DccObject::setWeight(quint32 weight)
 {
     if (p_ptr->m_weight != weight) {
         p_ptr->m_weight = weight;
-        if (p_ptr->m_parent) {
+        if (p_ptr->m_parent && p_ptr->m_parent->p_ptr) {
             p_ptr->m_parent->p_ptr->updatePos(this);
         }
         Q_EMIT weightChanged(p_ptr->m_weight);
@@ -442,11 +443,16 @@ DccObject *DccObject::currentObject()
 void DccObject::setCurrentObject(DccObject *obj)
 {
     if (p_ptr->m_currentObject != obj) {
-        if (p_ptr->m_currentObject) {
-            Q_EMIT p_ptr->m_currentObject->deactive();
-        }
+        DccObject *oldObject = p_ptr->m_currentObject;
         p_ptr->m_currentObject = obj;
-        Q_EMIT currentObjectChanged(p_ptr->m_currentObject);
+
+        DccApp *app = DccApp::instance();
+        if (!app || !app->isBatchUpdating()) {
+            if (oldObject) {
+                Q_EMIT oldObject->deactive();
+            }
+            Q_EMIT currentObjectChanged(p_ptr->m_currentObject);
+        }
     }
 }
 

src/dde-control-center/pluginmanager.cpp

@@ -151,6 +151,13 @@ void LoadPluginTask::createData()
             soObj->setParent(nullptr);
         }
     }
+    if (m_pManager->isDeleting()) {
+        if (dataObj)
+            delete dataObj;
+        if (soObj)
+            delete soObj;
+        return;
+    }
     if (dataObj) {
         m_data->data = dataObj;
     }
@@ -507,6 +514,7 @@ void PluginManager::loadMain(PluginData *plugin)
 void PluginManager::createModule(QQmlComponent *component)
 {
     if (isDeleting()) {
+        component->deleteLater();
         return;
     }
     PluginData *plugin = component->property("PluginData").value<PluginData *>();
@@ -536,6 +544,7 @@ void PluginManager::createModule(QQmlComponent *component)
 void PluginManager::createMain(QQmlComponent *component)
 {
     if (isDeleting()) {
+        component->deleteLater();
         return;
     }
     PluginData *plugin = component->property("PluginData").value<PluginData *>();