+ connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+ connect(this, SIGNAL(sceneRectChanged(const QRectF &)), secondColHandle, SLOT(sceneRectChanged(const QRectF &)));
+
+ setHandleXLimits();
+
+ connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
+ this, SLOT(rowsInserted(const QModelIndex &, int, int)));
+ connect(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)),
+ this, SLOT(rowsAboutToBeRemoved(const QModelIndex &, int, int)));