if ( gViewer != null ) this.gViewer.addDisposeListener( this ); }
if (gViewer != null) { this.gViewer.addDisposeListener(this); } }
	public GPaneListener( GViewer gViewer, CoreCommunication core ) {		this.gViewer = gViewer;		this.core = core;		// for stats the gViewer is null		if ( gViewer != null )			this.gViewer.addDisposeListener( this );	}