Fix execution of deferred properties

When deferred properties were assigned in multiple contexts, only the
outermost context was executed. Any deferred property assignments in
other inner contexts were never executed. Collect the deferred data to
a container to be able to execute them all.

Task-number: QTBUG-63200
Change-Id: I88fab27c1f81b5188430ada086dcc19842507e99
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 11 insertions, 2 deletions

diff --git a/src/qml/qml/qqmlcomponent_p.h b/src/qml/qml/qqmlcomponent_p.h
index d01a987acc..2a57f7b247 100644
--- a/src/qml/qml/qqmlcomponent_p.h
+++ b/src/qml/qml/qqmlcomponent_p.h
@@ -114,8 +114,17 @@ public:
     };
     ConstructionState state;
 
-    static void beginDeferred(QQmlEnginePrivate *enginePriv, QObject *object,
-                              ConstructionState *state);
+    struct DeferredState {
+        ~DeferredState() {
+            qDeleteAll(constructionStates);
+            constructionStates.clear();
+        }
+        QVector<ConstructionState *> constructionStates;
+    };
+
+    static void beginDeferred(QQmlEnginePrivate *enginePriv, QObject *object, DeferredState* deferredState);
+    static void completeDeferred(QQmlEnginePrivate *enginePriv, DeferredState *deferredState);
+
     static void complete(QQmlEnginePrivate *enginePriv, ConstructionState *state);
 
     QQmlEngine *engine;