public DockElement getTreeLocation() {
return null;
}
});
controller.getDoubleClickController().addListener( new DoubleClickListener(){
public boolean process( Dockable dockable, MouseEvent event ) {
if( dockable instanceof CommonDockable ){
CDockable source = ((CommonDockable)dockable).getDockable();
CDockableAccess access = accesses.get( source );
if( access != null ){