boolean (Component c, MouseEvent e) { if ( c != null && e instanceof MouseWheelEvent mwe && isDiagramViewComponent(c.getParent())) { return mwe.isShiftDown() && mwe.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL && JBScrollPane.isScrollEvent(mwe) && findHorizontalScrollBar(c) != null; } return false; }