Add a QmlUncreatable decorator

Add a class type that stores the reason and registers
the type in the call operator. This is then queried
by the register type helper functions.

Pick-to: 6.2
Task-number: PYSIDE-1709
Change-Id: I0dd0c4c1e05e6e0ee6f22a6947b85546fc373fb9
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 5 insertions, 1 deletions

diff --git a/sources/pyside6/PySide6/QtQml/pysideqmlregistertype.cpp b/sources/pyside6/PySide6/QtQml/pysideqmlregistertype.cpp
index ffa337b93..1dd0507f7 100644
--- a/sources/pyside6/PySide6/QtQml/pysideqmlregistertype.cpp
+++ b/sources/pyside6/PySide6/QtQml/pysideqmlregistertype.cpp
@@ -39,6 +39,7 @@
 
 #include "pysideqmlregistertype.h"
 #include "pysideqmlregistertype_p.h"
+#include "pysideqmluncreatable.h"
 
 #include <limits>
 
@@ -422,7 +423,10 @@ static PyObject *qmlElementMacroHelper(PyObject *pyObj,
 
 PyObject *PySide::qmlElementMacro(PyObject *pyObj)
 {
-    return qmlElementMacroHelper(pyObj, "QmlElement");
+    auto *noCreationReason = PySide::qmlNoCreationReason(pyObj);
+    const auto mode = noCreationReason != nullptr
+                      ? RegisterMode::Uncreatable : RegisterMode::Normal;
+    return qmlElementMacroHelper(pyObj, "QmlElement", mode, noCreationReason);
 }
 
 PyObject *PySide::qmlAnonymousMacro(PyObject *pyObj)