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
* Even if the progress bar and cancel button are
				 * not set to be visible ad of width 0, they still
				 * draw over the first pixel of the editor 
				 * contributions.
				 * 
				 * The fix here is to draw the progress bar and
				 * cancel button off screen if they are not visible.
				 */
				if (w == fProgressBar && !fProgressIsVisible ||
					w == fToolBar && !fCancelButtonIsVisible) {
					w.setBounds(x + rect.width, y, ws[i], h);
					continue;
				}
				w.setBounds(x, y, ws[i], h);
				if (ws[i] > 0) x+= ws[i] + GAP;
			}
		}
	}
	
	
	/**
	 * Create a new StatusLine as a child of the given parent.
	 */
	public StatusLine(Composite parent) {
		super(parent, SWT.NONE);
		
		addDisposeListener(new DisposeListener() {
			public void widgetDisposed(DisposeEvent e) {
				handleDispose();
			}