fPatternViewer.getTextWidget().setText("");
fPatternViewer.getDocument().set("");
	private void selectionChanged1() {				IStructuredSelection selection= (IStructuredSelection) fTableViewer.getSelection();		if (selection.size() == 1) {			Template template= (Template) selection.getFirstElement();			fPatternViewer.getTextWidget().setText(template.getPattern());		} else {					fPatternViewer.getTextWidget().setText(""); //$NON-NLS-1$		}				updateButtons();	}