}
public void handleLayerEvent(ILayerEvent event) {
if (event instanceof ColumnSelectionEvent) {
ColumnSelectionEvent selectionEvent = (ColumnSelectionEvent) event;
ColumnHeaderSelectionEvent colHeaderSelectionEvent = new ColumnHeaderSelectionEvent(
columnHeaderLayer, selectionEvent.getColumnPositionRanges());
columnHeaderLayer.fireLayerEvent(colHeaderSelectionEvent);
}
}