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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;
}
}
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.
}
function destroyC2() {
// we must gc() c1 first, then destroy c2, then handle events.
c2.destroy();
}
}
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