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/action/StatusLine.java
public static final int DELAY_PROGRESS= 500;	
	
	protected boolean fProgressIsVisible= false;
	protected boolean fCancelButtonIsVisible= false;
	protected boolean fCancelEnabled= false;
	protected String fTaskName;
	protected boolean fIsCanceled;
	protected long fStartTime;
	private Cursor fStopButtonCursor;
	protected String fMessageText;
	protected Image fMessageImage;
	protected String fErrorText;
	protected Image fErrorImage;
	
	
	protected CLabel fMessageLabel;
	protected ProgressIndicator fProgressBar;
	protected ToolBar fToolBar;
	protected ToolItem fCancelButton;
	
	protected static ImageDescriptor fgStopImage= ImageDescriptor.createFromFile(StatusLine.class, "images/stop.gif");
	static {
		JFaceResources.getImageRegistry().put("org.eclipse.jface.parts.StatusLine.stopImage", fgStopImage);
	}
	
	/**
	 * @private
	 */
	public class StatusLineLayout extends Layout {