QQmlMetaType: Remove qmlLists member

Instead of using a hashmap which maps a QML lists metatype to its list
element's metatype, we can just store a pointer in the list metatype to
the element metatype.
Moreover, listType now returns a metatype. This is a preparation for
converting
enginePriv->rawMetaObjectForType(typeId)
to
metaType.metaObject()
calls once we can actually retrieve the metaobject from QML metatypes.

The QML metatype interface classes are moved into a header, so that Qt
for Python can use the same classes.

This does not affect types registered from C++, as those use a different
mechanism.

Task-number: QTBUG-88766
Task-number: QTBUG-82931
Task-number: QTBUG-87134
Change-Id: I330c2bbe4ac92072a333c001750f7504b56df478
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/qml/jsruntime/qv4qmlcontext.cpp b/src/qml/jsruntime/qv4qmlcontext.cpp
index 5581ea9a53..18d611f2c3 100644
--- a/src/qml/jsruntime/qv4qmlcontext.cpp
+++ b/src/qml/jsruntime/qv4qmlcontext.cpp
@@ -126,7 +126,7 @@ static OptionalReturnedValue searchContextProperties(
         QQmlListProperty<QObject> prop(context->asQQmlContext(), (void*) qintptr(propertyIdx),
                                        QQmlContextPrivate::context_count,
                                        QQmlContextPrivate::context_at);
-        return OptionalReturnedValue(QmlListWrapper::create(v4, prop, qMetaTypeId<QQmlListProperty<QObject> >()));
+        return OptionalReturnedValue(QmlListWrapper::create(v4, prop, QMetaType::fromType<QQmlListProperty<QObject> >()));
     }
     return OptionalReturnedValue(v4->fromVariant(cp->propertyValue(propertyIdx)));
 }