Make QQmlEngine take care of QQmlContext setup

Teach QQmlEnginePrivate to create QQmlContextData for object creation
purposes. This is necessary for both QQmlObjectCreator and qmltc's
generated code

Since tst_qmltc_manual used to test roughly the same code, replace the
test-local implementation with the new one

Task-number: QTBUG-84368
Change-Id: I58a1d4b259f42170d6dfb3809b7dd894bcbacbe1
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/qml/qml/qqmlengine_p.h b/src/qml/qml/qqmlengine_p.h
index 2d5d75fafe..978b4d2d24 100644
--- a/src/qml/qml/qqmlengine_p.h
+++ b/src/qml/qml/qqmlengine_p.h
@@ -280,6 +280,23 @@ public:
     void executeRuntimeFunction(const QUrl &url, qsizetype functionIndex, QObject *thisObject,
                                 int argc = 0, void **args = nullptr, QMetaType *types = nullptr);
     QV4::ExecutableCompilationUnit *compilationUnitFromUrl(const QUrl &url);
+    QQmlRefPointer<QQmlContextData>
+    createInternalContext(const QQmlRefPointer<QV4::ExecutableCompilationUnit> &unit,
+                          const QQmlRefPointer<QQmlContextData> &parentContext,
+                          int subComponentIndex, bool isComponentRoot);
+    static void setInternalContext(QObject *This, const QQmlRefPointer<QQmlContextData> &context,
+                                   QQmlContextData::QmlObjectKind kind)
+    {
+        Q_ASSERT(This);
+        QQmlData *ddata = QQmlData::get(This, /*create*/ true);
+        // NB: copied from QQmlObjectCreator::createInstance()
+        //
+        // the if-statement logic to determine the kind is:
+        // if (static_cast<quint32>(index) == 0 || ddata->rootObjectInCreation || isInlineComponent)
+        // then QQmlContextData::DocumentRoot. here, we pass this through qmltc
+        context->installContext(ddata, kind);
+        Q_ASSERT(qmlEngine(This));
+    }
 
 private:
     class SingletonInstances : private QHash<QQmlType, QJSValue>