2 files changed, 22 insertions, 0 deletions
diff --git a/src/widgets/itemviews/qtreeview.cpp b/src/widgets/itemviews/qtreeview.cpp
index 61721143ef..d504263bd1 100644
--- a/src/widgets/itemviews/qtreeview.cpp
+++ b/src/widgets/itemviews/qtreeview.cpp
@@ -3992,6 +3992,27 @@ int QTreeView::visualIndex(const QModelIndex &index) const
     return d->viewIndex(index);
 }
 
+/*!
+   \reimp
+*/
+
+void QTreeView::verticalScrollbarValueChanged(int value)
+{
+    Q_D(QTreeView);
+    if (!d->viewItems.isEmpty() && value == verticalScrollBar()->maximum()) {
+        QModelIndex ret = d->viewItems.last().index;
+        // Root index will be handled by base class implementation
+        while (ret.isValid()) {
+            if (isExpanded(ret) && d->model->canFetchMore(ret)) {
+                d->model->fetchMore(ret);
+                break;
+            }
+            ret = ret.parent();
+        }
+    }
+    QAbstractItemView::verticalScrollbarValueChanged(value);
+}
+
 QT_END_NAMESPACE
 
 #include "moc_qtreeview.cpp"
diff --git a/src/widgets/itemviews/qtreeview.h b/src/widgets/itemviews/qtreeview.h
index c32c127cd1..e9bc8189f8 100644
--- a/src/widgets/itemviews/qtreeview.h
+++ b/src/widgets/itemviews/qtreeview.h
@@ -169,6 +169,7 @@ protected Q_SLOTS:
     void columnMoved();
     void reexpand();
     void rowsRemoved(const QModelIndex &parent, int first, int last);
+    void verticalScrollbarValueChanged(int value) Q_DECL_OVERRIDE;
 
 protected:
     QTreeView(QTreeViewPrivate &dd, QWidget *parent = Q_NULLPTR);