| import QtQuick 2.0 |
| import Qt.test 1.0 as ModApi |
| |
| Item { |
| id: root |
| |
| property bool success: false |
| property bool c1HasBeenDestroyed: false |
| |
| SignalEmittedComponent { |
| id: c2 |
| function c1aChangedHandler() { |
| // this should still be called, after c1 has been destroyed by gc, |
| // because the onDestruction handler of c1 will be triggered prior |
| // to when c1 will be invalidated. |
| if (root.c1HasBeenDestroyed) |
| root.success = true; |
| // note: cannot call c1::setSuccessPropertyOf(root, true), since any |
| // reference to c1 would have kept c1 alive. So, set it directly. |
| } |
| } |
| |
| Component.onCompleted: { |
| // dynamically construct sibling. When it goes out of scope, it should be gc'd. |
| // note that the gc() will call weakqobjectcallback which will set queued for |
| // deletion flag -- thus QQmlData::wasDeleted() will return true for that object.. |
| var comp = Qt.createComponent("SignalEmittedComponent.qml", root); |
| var c1 = comp.createObject(null); // JS ownership |
| c1.onAChanged.connect(c2.c1aChangedHandler); |
| c1HasBeenDestroyed = true; // gc will collect c1. |
| // return to event loop. |
| } |
| } |
