Bug 48001 Don't want 'e' as variable name in throw clause
M5 'Surround with' refactoring and quick fix use 'e' as exception variable name. It should be possible to configure this
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/NameConventionConfigurationBlock.java
private boolean canEdit(ListDialogField field) {
			return field.getSelectedElements().size() == 1;
		}
		public void customButtonPressed(ListDialogField field, int index) {
			doEditButtonPressed();
		}
		public void selectionChanged(ListDialogField field) {
			field.enableButton(0, canEdit(field));
		}
			
		public void doubleClicked(ListDialogField field) {
			if (canEdit(field)) {
				doEditButtonPressed();
			}