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, 3 insertions, 3 deletions

diff --git a/src/qml/qml/qqmllist.cpp b/src/qml/qml/qqmllist.cpp
index 0aecc51e85..3d15eba4ca 100644
--- a/src/qml/qml/qqmllist.cpp
+++ b/src/qml/qml/qqmllist.cpp
@@ -59,7 +59,7 @@ QQmlListReferencePrivate::QQmlListReferencePrivate()
 {
 }
 
-QQmlListReference QQmlListReferencePrivate::init(const QQmlListProperty<QObject> &prop, int propType, QQmlEngine *engine)
+QQmlListReference QQmlListReferencePrivate::init(const QQmlListProperty<QObject> &prop, QMetaType propType, QQmlEngine *engine)
 {
     QQmlListReference rv;
 
@@ -145,7 +145,7 @@ QQmlListReference::QQmlListReference(const QVariant &variant, QQmlEngine *engine
         return;
 
     d = new QQmlListReferencePrivate;
-    d->propertyType = t.id();
+    d->propertyType = t;
     d->setEngine(engine);
 
     d->property.~QQmlListProperty();
@@ -177,7 +177,7 @@ QQmlListReference::QQmlListReference(QObject *object, const char *property, QQml
 
     d = new QQmlListReferencePrivate;
     d->object = object;
-    d->propertyType = data->propType().id();
+    d->propertyType = data->propType();
     d->setEngine(engine);
 
     void *args[] = { &d->property, nullptr };