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/StatusLineManager.java
*/
public void setCancelEnabled(boolean enabled) {
	if (statusLineExist())
		statusLine.setCancelEnabled(enabled);
}
/* (non-Javadoc)
 * Method declared on IStatusLineManager.
 */
public void setErrorMessage(String message) {
	if (statusLineExist())
		statusLine.setErrorMessage(message);
}
/* (non-Javadoc)
 * Method declared on IStatusLineManager.
 */
public void setErrorMessage(Image image, String message) {
	if (statusLineExist())
		statusLine.setErrorMessage(image, message);
}
/* (non-Javadoc)
 * Method declared on IStatusLineManager.
 */
public void setMessage(String message) {
	if (statusLineExist())
		statusLine.setMessage(message);
}
/* (non-Javadoc)
 * Method declared on IStatusLineManager.
 */
public void setMessage(Image image, String message) {