UI: fix a crash on shutdown

Use a raw pointer instead of QScopedPointer for the UI components.
Since the components are always parented to the view and deleted through
the QObject cleanup mechanism, it was not correct to use QScopedPointer
in the first place.

Change-Id: I0c8fd9526e898439c52c6a6f538a66f8a1185ef9
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

2 files changed, 13 insertions, 10 deletions

diff --git a/src/webengine/ui_delegates_manager.cpp b/src/webengine/ui_delegates_manager.cpp
index 1402c7625..5fb5ef475 100644
--- a/src/webengine/ui_delegates_manager.cpp
+++ b/src/webengine/ui_delegates_manager.cpp
@@ -109,8 +109,12 @@ void NavigateMenuItem::onTriggered()
     m_adapter->load(m_targetUrl);
 }
 
+#define COMPONENT_MEMBER_INIT(TYPE, COMPONENT) \
+    , COMPONENT##Component(0)
+
 UIDelegatesManager::UIDelegatesManager(QQuickWebEngineView *view)
     : m_view(view)
+    FOR_EACH_COMPONENT_TYPE(COMPONENT_MEMBER_INIT, NO_SEPARATOR)
 {
 }
 
@@ -121,7 +125,7 @@ UIDelegatesManager::UIDelegatesManager(QQuickWebEngineView *view)
 
 bool UIDelegatesManager::ensureComponentLoaded(ComponentType type)
 {
-    QScopedPointer<QQmlComponent> *component;
+    QQmlComponent **component;
     switch (type) {
     FOR_EACH_COMPONENT_TYPE(COMPONENT_MEMBER_CASE_STATEMENT, NO_SEPARATOR)
     default:
@@ -130,7 +134,7 @@ bool UIDelegatesManager::ensureComponentLoaded(ComponentType type)
     }
     QString fileName(fileNameForComponent(type));
 #ifndef UI_DELEGATES_DEBUG
-    if (!(*component).isNull())
+    if (*component)
         return true;
 #else // Unconditionally reload the components each time.
     fprintf(stderr, "%s: %s\n", Q_FUNC_INFO, qPrintable(fileName));
@@ -145,7 +149,7 @@ bool UIDelegatesManager::ensureComponentLoaded(ComponentType type)
             absolutePath = fi.absoluteFilePath();
     }
     // FIXME: handle async loading
-    (*component).reset(new QQmlComponent(engine, QUrl(absolutePath), QQmlComponent::PreferSynchronous, m_view));
+    *component = (new QQmlComponent(engine, QUrl(absolutePath), QQmlComponent::PreferSynchronous, m_view));
 
     if ((*component)->status() != QQmlComponent::Ready) {
 #ifdef UI_DELEGATES_DEBUG
@@ -175,7 +179,7 @@ void UIDelegatesManager::addMenuItem(MenuItemHandler *menuItemHandler, const QSt
     Q_ASSERT(menuItemHandler);
     if (!ensureComponentLoaded(MenuItem))
         return;
-    QObject *it = menuItemComponent->beginCreate(creationContextForComponent(menuItemComponent.data()));
+    QObject *it = menuItemComponent->beginCreate(creationContextForComponent(menuItemComponent));
 
     QQmlProperty(it, QStringLiteral("text")).write(text);
     QQmlProperty(it, QStringLiteral("iconName")).write(iconName);
@@ -199,7 +203,7 @@ void UIDelegatesManager::addMenuSeparator(QObject *menu)
     if (!ensureComponentLoaded(MenuSeparator))
         return;
 
-    QQmlContext *itemContext = creationContextForComponent(menuSeparatorComponent.data());
+    QQmlContext *itemContext = creationContextForComponent(menuSeparatorComponent);
     QObject *sep = menuSeparatorComponent->create(itemContext);
     sep->setParent(menu);
 
@@ -213,7 +217,7 @@ QObject *UIDelegatesManager::addMenu(QObject *parentMenu, const QString &title,
 
     if (!ensureComponentLoaded(Menu))
         return 0;
-    QQmlContext *context(creationContextForComponent(menuComponent.data()));
+    QQmlContext *context(creationContextForComponent(menuComponent));
     QObject *menu = menuComponent->beginCreate(context);
     // Useful when not using Qt Quick Controls' Menu
     if (QQuickItem* item = qobject_cast<QQuickItem*>(menu))
@@ -241,7 +245,7 @@ QObject *UIDelegatesManager::addMenu(QObject *parentMenu, const QString &title,
 
 #define ASSIGN_DIALOG_COMPONENT_DATA_CASE_STATEMENT(TYPE, COMPONENT) \
     case TYPE:\
-        dialogComponent = COMPONENT##Component.data(); \
+        dialogComponent = COMPONENT##Component; \
         break;
 
 
@@ -360,7 +364,7 @@ void UIDelegatesManager::showFilePicker(WebContentsAdapterClient::FileChooserMod
 
     if (!ensureComponentLoaded(FilePicker))
         return;
-    QQmlContext *context(creationContextForComponent(filePickerComponent.data()));
+    QQmlContext *context(creationContextForComponent(filePickerComponent));
     QObject *filePicker = filePickerComponent->beginCreate(context);
     if (QQuickItem* item = qobject_cast<QQuickItem*>(filePicker))
         item->setParentItem(m_view);
diff --git a/src/webengine/ui_delegates_manager.h b/src/webengine/ui_delegates_manager.h
index a6d15a530..125cacff4 100644
--- a/src/webengine/ui_delegates_manager.h
+++ b/src/webengine/ui_delegates_manager.h
@@ -49,7 +49,6 @@
 #include <QExplicitlySharedDataPointer>
 #include <QPoint>
 #include <QQmlComponent>
-#include <QScopedPointer>
 #include <QSharedPointer>
 #include <QUrl>
 
@@ -67,7 +66,7 @@
 #define ENUM_DECLARATION(TYPE, COMPONENT) \
     TYPE
 #define MEMBER_DECLARATION(TYPE, COMPONENT) \
-    QScopedPointer<QQmlComponent> COMPONENT##Component
+    QQmlComponent *COMPONENT##Component
 
 class JavaScriptDialogController;
 QT_BEGIN_NAMESPACE