Bug 294796 [Contributions] API request: LegacyActionTools#escapeMnemonics(String)
bundles/org.eclipse.jface/src/org/eclipse/jface/action/StatusLine.java
fTaskName = Util.ZERO_LENGTH_STRING;
		else
			fTaskName = name;
	}
	/**
	 * Makes the Cancel button visible.
	 * 
	 */
	protected void showButton() {
		if (fToolBar != null && !fToolBar.isDisposed()) {
			fToolBar.setVisible(true);
			fToolBar.setEnabled(true);
			fToolBar.setCursor(fStopButtonCursor);
			fCancelButtonIsVisible = true;
		}
	}
	/**
	 * Shows the Cancel button and ProgressIndicator.
	 * 
	 */
	protected void showProgress() {
		if (!fProgressIsVisible && !isDisposed()) {
			fProgressIsVisible = true;
			if (fCancelEnabled) {
				showButton();
			}
			if (fProgressBarComposite != null
					&& !fProgressBarComposite.isDisposed()) {
				fProgressBarComposite.setVisible(true);
			}