public void selectionChanged(SelectionChangedEvent event) { ISelection selection= event.getSelection(); if (selection instanceof ITextSelection) {
public void selectionChanged(IWorkbenchPart part, ISelection selection) { if (part == fPart && selection instanceof ITextSelection)
				public void selectionChanged(SelectionChangedEvent event) {					ISelection selection= event.getSelection();					if (selection instanceof ITextSelection) {						firePostSelectionChanged((ITextSelection) selection);					}				}