HistoryView view = (HistoryView)showView(HistoryView.VIEW_ID);
IHistoryView view = (IHistoryView) showView(ISVNUIConstants.HISTORY_VIEW_ID);
			public void run(IProgressMonitor monitor) {				IResource[] resources = getSelectedResources();				if (resources.length != 1) return;				HistoryView view = (HistoryView)showView(HistoryView.VIEW_ID);				if (view != null) {					view.showHistory(resources[0], false);				}			}