diff options
| -rw-r--r-- | src/quick/items/qquickloader.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/quick/items/qquickloader.cpp b/src/quick/items/qquickloader.cpp index 8cd63a4236..9a8eca871c 100644 --- a/src/quick/items/qquickloader.cpp +++ b/src/quick/items/qquickloader.cpp @@ -412,6 +412,19 @@ void QQuickLoader::setSource(const QUrl &url) void QQuickLoader::setSource(const QUrl &url, bool needsClear) { Q_D(QQuickLoader); + + // The source has been changed at this point, and we assume that (after + // notifying potential listeners with sourceChanged) that it is now + // safe to actually delete the old component. We have to do this here + // in case the component referenced expensive resources (like uncached + // images), as it might take too long until we return to the event loop. + // We need to explicitly pass QEvent::DeferredDelete to sendPostedEvents, + // else the allowDeferredDelete check in qcoreapplication.cpp will not + // allow the event to pass. This will not affect anything deleted by this + // call, only the previous one. This has to be done as otherwise there + // might be signal handlers that are still in progress. + QCoreApplication::sendPostedEvents(nullptr, QEvent::DeferredDelete); + if (d->source == url) return; |