/*******************************************************************************
* Copyright (c) 2000, 2005 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;
/**
* A position updater is responsible for adapting document positions. When
* installed on a document, the position updater updates the document's
* positions to changes applied to this document. Document updaters can be
* selective, i.e. they might only update positions of a certain category.
* <p>
* Position updaters are of primary importance for the definition of the
* semantics of positions.
* <p>
* Clients may implement this interface or use the standard implementation
* {@link org.eclipse.jface.text.DefaultPositionUpdater}.
* </p>
*
* @see org.eclipse.jface.text.IDocument
* @see org.eclipse.jface.text.Position
*/
public interface IPositionUpdater {
/**
* Adapts positions to the change specified by the document event.
* It is ensured that the document's partitioning has been adapted to
* this document change and that all the position updaters which have
* a smaller index in the document's position updater list have been called.
*
* @param event the document event describing the document change
*/
void update(DocumentEvent event);
}