diff options
| author | Simon Hausmann <simon.hausmann@digia.com> | 2014-01-03 10:38:33 +0100 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-01-06 10:40:08 +0100 |
| commit | 39540124dd0900e0c99dcda8c0ebdf4f3cea8d5e (patch) | |
| tree | 8fb7174b6523945101f7bd5177b973a745b357de /src/quick/items/qquickitem.cpp | |
| parent | e3232bce40ddefd3b4dfa57a923b15cb47f051bf (diff) | |
Fix interaction of QQuickItems with the garbage collector
The QObject ownership of QQuickItem objects is not accessible / mutable
in QML, because the parent property maps to the (dynamic) visual parent.
There are use-cases of creating QQuickItem objects without a QObject parent and
to support this, the visual parent needs to mark its visual children in order
to provide intuitive semantics.
[ChangeLog][QtQuick][Import Behavior Changes] A QQuick Item is now strongly
referenced by its visual parent item, so it doesn't require a QObject parent to
stay alive.
Task-number: QTBUG-35913
Change-Id: Ief2d40ac76298a0cf241ca73ff654c4ecfa12748
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Diffstat (limited to 'src/quick/items/qquickitem.cpp')
| -rw-r--r-- | src/quick/items/qquickitem.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/quick/items/qquickitem.cpp b/src/quick/items/qquickitem.cpp index 8c94b9dd5b..72b0e588ec 100644 --- a/src/quick/items/qquickitem.cpp +++ b/src/quick/items/qquickitem.cpp @@ -6478,6 +6478,17 @@ void QQuickItemPrivate::incrementCursorCount(int delta) #endif } +void QQuickItemPrivate::markObjects(QV4::ExecutionEngine *e) +{ + Q_Q(QQuickItem); + QQmlData *ddata = QQmlData::get(q); + if (ddata) + ddata->jsWrapper.markOnce(e); + + foreach (QQuickItem *child, childItems) + QQuickItemPrivate::get(child)->markObjects(e); +} + #ifndef QT_NO_CURSOR /*! |