Bug 29163 SafeRunnable needs to be accessible in JFace
We need to be able to access the SafeRunnable in JFace in order that some error protection can be added to preferences and properties dialogs.
bundles/org.eclipse.ui.workbench/extensions/org/eclipse/jface/wizard/ProgressMonitorPart.java
protected Label fLabel;
	protected String fTaskName;
	protected String fSubTaskName;
	protected ProgressIndicator fProgressIndicator;
	protected Control fCancelComponent;
	protected boolean fIsCanceled;
	
	protected Listener fCancelListener= new Listener() {
		public void handleEvent(Event e) {
			setCanceled(true);
			if (fCancelComponent != null)
				fCancelComponent.setEnabled(false);
		}	
	};