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/WizardDialog.java
/**
	 * Image registry key for error message image (value <code>"dialog_title_error_image"</code>).
	 */
	public static final String WIZ_IMG_ERROR = "dialog_title_error_image";
	
	private IWizard wizard;
	
	private ArrayList createdWizards = new ArrayList();
	
	private ArrayList nestedWizards = new ArrayList();
	
	
	private IWizardPage currentPage = null;
	
		
	private long activeRunningOperations = 0;
	private boolean operationCancelableState;
	
	
	private boolean isHelpAvailable = true;
	
	private String pageMessage;
	private int pageMessageType = IMessageProvider.NONE;
	private String pageDescription;