Fix incompatibility between QML and C++ instantiated objects

This fixes a source incompatibility introduced in 9ebba7c3a. In Qt 5.11 it was
possible to have the following code:

    XdgShellV6 {
        property XdgToplevelV6 top
        onToplevelCreated: top = toplevel
    }

After, 9ebba7c3a, however, this would fail because XdgToplevel refers to
QWaylandXdgToplevelV6ParentClass, while QWaylandXdgShellV6::toplevelCreated
emits a QWaylandXdgToplevelV6.

It would also break instanceof, i.e.:

    onToplevelCreated: console.log(toplevel instanceof XdgToplevelV6)

This patch reverts to C++ and QML using the same type (no subclassing for QML
types), but still lets the items have children in QML by putting the macro
inside each class instead.

Task-number: QTBUG-70090
Change-Id: I8efa8f68ebc4dc2289b4a9b96402b0c00d45547d
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

1 files changed, 0 insertions, 36 deletions

diff --git a/src/compositor/global/qwaylandquickextension.h b/src/compositor/global/qwaylandquickextension.h
index a0e07dad3..c721bcb97 100644
--- a/src/compositor/global/qwaylandquickextension.h
+++ b/src/compositor/global/qwaylandquickextension.h
@@ -107,42 +107,6 @@ QT_BEGIN_NAMESPACE
         QList<QObject *> m_objects; \
     };
 
-#define Q_COMPOSITOR_DECLARE_QUICK_PARENT_CLASS(className) \
-    class Q_WAYLAND_COMPOSITOR_EXPORT className##QuickParent : public className \
-    { \
-/* qmake ignore Q_OBJECT */ \
-        Q_OBJECT \
-        Q_PROPERTY(QQmlListProperty<QObject> data READ data DESIGNABLE false) \
-        Q_CLASSINFO("DefaultProperty", "data") \
-    public: \
-        QQmlListProperty<QObject> data() \
-        { \
-            return QQmlListProperty<QObject>(this, this, \
-                                             &className##QuickParent::appendFunction, \
-                                             &className##QuickParent::countFunction, \
-                                             &className##QuickParent::atFunction, \
-                                             &className##QuickParent::clearFunction); \
-        } \
-        static void appendFunction(QQmlListProperty<QObject> *list, QObject *object) \
-        { \
-            static_cast<className##QuickParent *>(list->data)->m_children.append(object); \
-        } \
-        static int countFunction(QQmlListProperty<QObject> *list) \
-        { \
-            return static_cast<className##QuickParent *>(list->data)->m_children.size(); \
-        } \
-        static QObject *atFunction(QQmlListProperty<QObject> *list, int index) \
-        { \
-            return static_cast<className##QuickParent *>(list->data)->m_children.at(index); \
-        } \
-        static void clearFunction(QQmlListProperty<QObject> *list) \
-        { \
-            static_cast<className##QuickParent *>(list->data)->m_children.clear(); \
-        } \
-    private: \
-        QVector<QObject *> m_children; \
-    };
-
 QT_END_NAMESPACE
 
 #endif  /*QWAYLANDQUICKEXTENSION_H*/