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-rw-r--r--src/qml/qml/qqmlcontext.cpp17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/qml/qml/qqmlcontext.cpp b/src/qml/qml/qqmlcontext.cpp
index bd59409475..14892bd6ad 100644
--- a/src/qml/qml/qqmlcontext.cpp
+++ b/src/qml/qml/qqmlcontext.cpp
@@ -317,6 +317,12 @@ void QQmlContext::setContextProperty(const QString &name, const QVariant &value)
d->propertyValues[idx] = value;
QMetaObject::activate(this, d->notifyIndex, idx, nullptr);
}
+
+ if (auto *obj = qvariant_cast<QObject *>(value)) {
+ connect(obj, &QObject::destroyed, this, [d, name](QObject *destroyed) {
+ d->dropDestroyedQObject(name, destroyed);
+ });
+ }
}
/*!
@@ -524,6 +530,17 @@ QObject *QQmlContextPrivate::context_at(QQmlListProperty<QObject> *prop, int ind
}
}
+void QQmlContextPrivate::dropDestroyedQObject(const QString &name, QObject *destroyed)
+{
+ const int idx = data->propertyNames().value(name);
+ Q_ASSERT(idx >= 0);
+ if (qvariant_cast<QObject *>(propertyValues[idx]) != destroyed)
+ return;
+
+ propertyValues[idx] = QVariant::fromValue<QObject *>(nullptr);
+ QMetaObject::activate(q_func(), notifyIndex, idx, nullptr);
+}
+
QQmlContextData::QQmlContextData()
: QQmlContextData(nullptr)