/**
 * copied from org.eclipse.jdt.internal.ui.javaeditor.JavaSourceViewer.prependTextPresentationListener(ITextPresentationListener)
 */
public void prependTextPresentationListener(ITextPresentationListener listener) {
	Assert.isNotNull(listener);

	if (fTextPresentationListeners == null)
		fTextPresentationListeners= new ArrayList<ITextPresentationListener>();

	fTextPresentationListeners.remove(listener);
	fTextPresentationListeners.add(0, listener);
}
 

/**
 * Prepends the text presentation listener at the beginning of the viewer's
 * list of text presentation listeners.  If the listener is already registered
 * with the viewer this call moves the listener to the beginning of
 * the list.
 *
 * @param listener the text presentation listener
 * @since 3.0
 */
public void prependTextPresentationListener(ITextPresentationListener listener) {

	Assert.isNotNull(listener);

	if (fTextPresentationListeners == null)
		fTextPresentationListeners= new ArrayList<ITextPresentationListener>();

	fTextPresentationListeners.remove(listener);
	fTextPresentationListeners.add(0, listener);
}
 

public void addTextPresentationListener(ITextPresentationListener listener) {
    viewer.addTextPresentationListener(listener);
}
 

public void removeTextPresentationListener(ITextPresentationListener listener) {
    viewer.removeTextPresentationListener(listener);
}