/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.jface.text.source;

/**
 * Extension interface for {@link org.eclipse.jface.text.source.ISourceViewer}.<p>
 * Allows the source viewer to roll back a previous configuration process and allows
 * clients access to the viewer's visual annotation model.
 *
 * @since 3.0
 */
public interface ISourceViewerExtension2 {

	/**
	 * Rolls back the configuration process of this source viewer. The source
	 * viewer can be configured again after a call to this method. Unlike
	 * {@link ISourceViewer#configure(SourceViewerConfiguration)} this method
	 * can be called more than once without interleaving calls to
	 * {@link ISourceViewer#configure(SourceViewerConfiguration)}.
	 */
	void unconfigure();

	/**
	 * Returns the visual annotation model of this viewer.
	 *
	 * @return the visual annotation model of this viewer
	 */
	IAnnotationModel getVisualAnnotationModel();
}
