columnReorderLayer.addLayerListener(new ILayerListener() {
			
	@Override
	public void handleLayerEvent(ILayerEvent event) {
		if (event instanceof ColumnReorderEvent) {
			System.out.println("BeforeToColumnPos: " + ((ColumnReorderEvent)event).getBeforeToColumnPosition());
			for (StructuralDiff diff : ((ColumnReorderEvent)event).getColumnDiffs()) {
				System.out.println("Diff " + diff.getDiffType() + ": " + diff.getAfterPositionRange().end);
			}
		}
	}
});