Bug 7235 [Contributions] Need dispose() for action delegates
bundles/org.eclipse.ui.workbench/extensions/org/eclipse/jface/action/StatusLineManager.java
*/
public void dispose() {
	if (statusLineExist())
		statusLine.dispose();
	statusLine = null;
}
/**
 * Internal -- returns the StatusLine control.
 * <p>
 * This method is not intended to be used outside of the JFace framework.
 * </p>
 */
public Control getControl() {
	return statusLine;
}
/*
 * (non-Javadoc)
 * Method declared on IStatusLineManager
 */
public IProgressMonitor getProgressMonitor() {
	return statusLine;
}
/* (non-Javadoc)
 * Method declared on IStatueLineManager
 */
public boolean isCancelEnabled() {
	return statusLineExist() && statusLine.isCancelEnabled();
}
/* (non-Javadoc)
 * Method declared on IStatueLineManager