2 files changed, 16 insertions, 9 deletions
diff --git a/src/corelib/itemmodels/qabstractproxymodel.cpp b/src/corelib/itemmodels/qabstractproxymodel.cpp
index 69160043ea..063bb0de8c 100644
--- a/src/corelib/itemmodels/qabstractproxymodel.cpp
+++ b/src/corelib/itemmodels/qabstractproxymodel.cpp
@@ -122,16 +122,19 @@ QAbstractProxyModel::~QAbstractProxyModel()
 void QAbstractProxyModel::setSourceModel(QAbstractItemModel *sourceModel)
 {
     Q_D(QAbstractProxyModel);
-    if (d->model)
-        disconnect(d->model, SIGNAL(destroyed()), this, SLOT(_q_sourceModelDestroyed()));
-
-    if (sourceModel) {
-        d->model = sourceModel;
-        connect(d->model, SIGNAL(destroyed()), this, SLOT(_q_sourceModelDestroyed()));
-    } else {
-        d->model = QAbstractItemModelPrivate::staticEmptyModel();
+    if (sourceModel != d->model) {
+        if (d->model)
+            disconnect(d->model, SIGNAL(destroyed()), this, SLOT(_q_sourceModelDestroyed()));
+
+        if (sourceModel) {
+            d->model = sourceModel;
+            connect(d->model, SIGNAL(destroyed()), this, SLOT(_q_sourceModelDestroyed()));
+        } else {
+            d->model = QAbstractItemModelPrivate::staticEmptyModel();
+        }
+        d->roleNames = d->model->roleNames();
+        emit sourceModelChanged();
     }
-    d->roleNames = d->model->roleNames();
 }
 
 /*!
diff --git a/src/corelib/itemmodels/qabstractproxymodel.h b/src/corelib/itemmodels/qabstractproxymodel.h
index d80fcb683c..4dcbdfda50 100644
--- a/src/corelib/itemmodels/qabstractproxymodel.h
+++ b/src/corelib/itemmodels/qabstractproxymodel.h
@@ -57,6 +57,7 @@ class QItemSelection;
 class Q_CORE_EXPORT QAbstractProxyModel : public QAbstractItemModel
 {
     Q_OBJECT
+    Q_PROPERTY(QAbstractItemModel* sourceModel READ sourceModel WRITE setSourceModel NOTIFY sourceModelChanged)
 
 public:
     explicit QAbstractProxyModel(QObject *parent = 0);
@@ -94,6 +95,9 @@ public:
     QStringList mimeTypes() const;
     Qt::DropActions supportedDropActions() const;
 
+Q_SIGNALS:
+    void sourceModelChanged();
+
 protected:
     QAbstractProxyModel(QAbstractProxyModelPrivate &, QObject *parent);