QmlDesigner: Improve ownership for ViewManager additionalViews

Change-Id: I0fc72336ea612324ae900cbffae10721ab3863c8
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/qmldesigner/assetexporterplugin/assetexporterplugin.cpp

@@ -58,15 +58,14 @@
 
 namespace QmlDesigner {
 
-AssetExporterPlugin::AssetExporterPlugin() :
-    m_view(new AssetExporterView)
+AssetExporterPlugin::AssetExporterPlugin()
 {
     ProjectExplorer::TaskHub::addCategory( Constants::TASK_CATEGORY_ASSET_EXPORT,
                                            tr("Asset Export"), false);
 
     auto *designerPlugin = QmlDesigner::QmlDesignerPlugin::instance();
     auto &viewManager = designerPlugin->viewManager();
-    viewManager.registerViewTakingOwnership(m_view);
+    m_view = viewManager.registerView(std::make_unique<AssetExporterView>());
 
     // Add dumper templates for factory instantiation.
     Component::addNodeDumper<ItemNodeDumper>();

src/plugins/qmldesigner/designercore/include/viewmanager.h

@@ -72,7 +72,13 @@ public:
     void resetPropertyEditorView();
 
     void registerFormEditorToolTakingOwnership(AbstractCustomTool *tool);
-    void registerViewTakingOwnership(AbstractView *view);
+    template<typename View>
+    View *registerView(std::unique_ptr<View> &&view)
+    {
+        auto notOwningPointer = view.get();
+        addView(std::move(view));
+        return notOwningPointer;
+    }
 
     QList<WidgetInfo> widgetInfos() const;
     QWidget *widget(const QString & uniqueId) const;
@@ -109,6 +115,8 @@ public:
 private: // functions
     Q_DISABLE_COPY(ViewManager)
 
+    void addView(std::unique_ptr<AbstractView> &&view);
+
     void attachNodeInstanceView();
     void attachItemLibraryView();
     void attachAdditionalViews();
@@ -121,8 +129,8 @@ private: // functions
 
     void switchStateEditorViewToBaseState();
     void switchStateEditorViewToSavedState();
-    QList<QPointer<AbstractView>> views() const;
-    const QList<QPointer<AbstractView> > standardViews() const;
+    QList<AbstractView *> views() const;
+    QList<AbstractView *> standardViews() const;
 
 private: // variables
     std::unique_ptr<ViewManagerData> d;

src/plugins/qmldesigner/designercore/model/viewmanager.cpp

@@ -76,7 +76,7 @@ public:
     PropertyEditorView propertyEditorView;
     StatesEditorView statesEditorView;
 
-    QList<QPointer<AbstractView> > additionalViews;
+    std::vector<std::unique_ptr<AbstractView>> additionalViews;
     bool disableStandardViews = false;
 };
 
@@ -94,12 +94,7 @@ ViewManager::ViewManager()
     });
 }
 
-ViewManager::~ViewManager()
-{
-    for (const QPointer<AbstractView> &view : qAsConst(d->additionalViews))
-        delete view.data();
-
-}
+ViewManager::~ViewManager() = default;
 
 DesignDocument *ViewManager::currentDesignDocument() const
 {
@@ -169,25 +164,24 @@ void ViewManager::switchStateEditorViewToSavedState()
         d->statesEditorView.setCurrentState(d->savedState);
 }
 
-QList<QPointer<AbstractView> > ViewManager::views() const
+QList<AbstractView *> ViewManager::views() const
 {
-    auto list = d->additionalViews;
+    auto list = Utils::transform<QList<AbstractView *>>(d->additionalViews,
+                                                        [](auto &&view) { return view.get(); });
     list.append(standardViews());
     return list;
 }
 
-const QList<QPointer<AbstractView> > ViewManager::standardViews() const
+QList<AbstractView *> ViewManager::standardViews() const
 {
-    QList<QPointer<AbstractView>> list = {
-                    &d->edit3DView,
-                    &d->formEditorView,
-                    &d->textEditorView,
-                    &d->itemLibraryView,
-                    &d->navigatorView,
-                    &d->propertyEditorView,
-                    &d->statesEditorView,
-                    &d->designerActionManagerView
-                };
+    QList<AbstractView *> list = {&d->edit3DView,
+                                  &d->formEditorView,
+                                  &d->textEditorView,
+                                  &d->itemLibraryView,
+                                  &d->navigatorView,
+                                  &d->propertyEditorView,
+                                  &d->statesEditorView,
+                                  &d->designerActionManagerView};
 
     if (QmlDesignerPlugin::instance()->settings().value(
                 DesignerSettingsKey::ENABLE_DEBUGVIEW).toBool())
@@ -206,11 +200,6 @@ void ViewManager::registerFormEditorToolTakingOwnership(AbstractCustomTool *tool
     d->formEditorView.registerTool(tool);
 }
 
-void ViewManager::registerViewTakingOwnership(AbstractView *view)
-{
-    d->additionalViews.append(view);
-}
-
 void ViewManager::detachViewsExceptRewriterAndComponetView()
 {
     switchStateEditorViewToBaseState();
@@ -228,14 +217,14 @@ void ViewManager::attachItemLibraryView()
 
 void ViewManager::attachAdditionalViews()
 {
-    foreach (const QPointer<AbstractView> &view, d->additionalViews)
-        currentModel()->attachView(view.data());
+    for (auto &view : d->additionalViews)
+        currentModel()->attachView(view.get());
 }
 
 void ViewManager::detachAdditionalViews()
 {
-    foreach (const QPointer<AbstractView> &view, d->additionalViews)
-        currentModel()->detachView(view.data());
+    for (auto &view : d->additionalViews)
+        currentModel()->detachView(view.get());
 }
 
 void ViewManager::detachStandardViews()
@@ -337,9 +326,9 @@ QList<WidgetInfo> ViewManager::widgetInfos() const
     if (d->debugView.hasWidget())
         widgetInfoList.append(d->debugView.widgetInfo());
 
-    foreach (const QPointer<AbstractView> &abstractView, d->additionalViews) {
-        if (abstractView && abstractView->hasWidget())
-            widgetInfoList.append(abstractView->widgetInfo());
+    for (auto &view : d->additionalViews) {
+        if (view->hasWidget())
+            widgetInfoList.append(view->widgetInfo());
     }
 
     Utils::sort(widgetInfoList, [](const WidgetInfo &firstWidgetInfo, const WidgetInfo &secondWidgetInfo) {
@@ -457,6 +446,11 @@ AsynchronousImageCache &ViewManager::imageCache()
     return d->itemLibraryView.imageCache();
 }
 
+void ViewManager::addView(std::unique_ptr<AbstractView> &&view)
+{
+    d->additionalViews.push_back(std::move(view));
+}
+
 } // namespace QmlDesigner
 
 #endif //QMLDESIGNER_TEST

src/plugins/qmldesigner/qmldesignerplugin.cpp

@@ -249,22 +249,20 @@ bool QmlDesignerPlugin::delayedInitialize()
 
     d->settings.fromSettings(Core::ICore::settings());
 
-    d->viewManager.registerViewTakingOwnership(new QmlDesigner::Internal::ConnectionView);
+    d->viewManager.registerView(std::make_unique<QmlDesigner::Internal::ConnectionView>());
     if (DesignerSettings::getValue(DesignerSettingsKey::ENABLE_TIMELINEVIEW).toBool()) {
-        auto timelineView = new QmlDesigner::TimelineView;
-        d->viewManager.registerViewTakingOwnership(timelineView);
+        auto timelineView = d->viewManager.registerView(std::make_unique<QmlDesigner::TimelineView>());
         timelineView->registerActions();
 
-        auto curveEditorView = new QmlDesigner::CurveEditorView;
-        d->viewManager.registerViewTakingOwnership(curveEditorView);
+        d->viewManager.registerView(std::make_unique<QmlDesigner::CurveEditorView>());
 
-        auto eventlistView = new QmlDesigner::EventListPluginView;
-        d->viewManager.registerViewTakingOwnership(eventlistView);
+        auto eventlistView = d->viewManager.registerView(
+            std::make_unique<QmlDesigner::EventListPluginView>());
         eventlistView->registerActions();
     }
 
-    auto transitionEditorView = new QmlDesigner::TransitionEditorView;
-    d->viewManager.registerViewTakingOwnership(transitionEditorView);
+    auto transitionEditorView = d->viewManager.registerView(
+        std::make_unique<QmlDesigner::TransitionEditorView>());
     transitionEditorView->registerActions();
 
     d->viewManager.registerFormEditorToolTakingOwnership(new QmlDesigner::SourceTool);