+ QTreeView::dragEnterEvent(event);
+ m_dragging = true;
+}
+
+void SidebarTreeView::dragLeaveEvent(QDragLeaveEvent* event)
+{
+ QTreeView::dragLeaveEvent(event);
+
+ // TODO: remove this code when the issue #160611 is solved in Qt 4.4
+ m_dragging = false;
+ setDirtyRegion(m_dropRect);
+}
+
+void SidebarTreeView::dragMoveEvent(QDragMoveEvent* event)
+{
+ QTreeView::dragMoveEvent(event);
+
+ // TODO: remove this code when the issue #160611 is solved in Qt 4.4
+ const QModelIndex index = indexAt(event->pos());
+ setDirtyRegion(m_dropRect);
+ m_dropRect = visualRect(index);
+ setDirtyRegion(m_dropRect);