Make loadFromModule compatible with QQmlParserStatus

...as well as the private finalizer hook. Given that
QQmlComponent::loadFromModule creates the object through the QML engine,
we should support the lifecycle methods, even if we sidestep the usual
creation process through the QQmlObjectCreator.

Pick-to: 6.7 6.6 6.5
Fixes: QTBUG-122076
Change-Id: I2dfe5dd607414df123519d9fccd4178cc5e4cde7
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/qml/qml/qqmlcomponent.cpp b/src/qml/qml/qqmlcomponent.cpp
index 1b6bac5d0e..73e523fec6 100644
--- a/src/qml/qml/qqmlcomponent.cpp
+++ b/src/qml/qml/qqmlcomponent.cpp
@@ -1092,8 +1092,15 @@ QObject *QQmlComponentPrivate::beginCreate(QQmlRefPointer<QQmlContextData> conte
             state.appendCreatorErrors();
         enginePriv->dereferenceScarceResources();
     } else {
+        // TODO: extract into function
         rv = loadedType.createWithQQmlData();
         QQmlPropertyCache::ConstPtr propertyCache = QQmlData::ensurePropertyCache(rv);
+        QQmlParserStatus *parserStatus = nullptr;
+        const int parserStatusCast = loadedType.parserStatusCast();
+        if (parserStatusCast != -1) {
+            parserStatus = reinterpret_cast<QQmlParserStatus*>(reinterpret_cast<char *>(rv) + parserStatusCast);
+            parserStatus->classBegin();
+        }
         for (int i = 0, propertyCount = propertyCache->propertyCount(); i < propertyCount; ++i) {
             if (const QQmlPropertyData *propertyData = propertyCache->property(i); propertyData->isRequired()) {
                 state.ensureRequiredPropertyStorage();
@@ -1102,6 +1109,12 @@ QObject *QQmlComponentPrivate::beginCreate(QQmlRefPointer<QQmlContextData> conte
                 state.addPendingRequiredProperty(rv, propertyData, info);
             }
         }
+        if (parserStatus)
+            parserStatus->componentComplete();
+        if (const int finalizerCast = loadedType.finalizerCast(); finalizerCast != -1) {
+            auto* hook = reinterpret_cast<QQmlFinalizerHook *>(reinterpret_cast<char *>(rv) + finalizerCast);
+            hook->componentFinalized();
+        }
     }
 
     if (rv) {