Copyright (c) 2000, 2005 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * 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.

Position updaters are of primary importance for the definition of the
semantics of positions.
 Clients may implement this interface or use the standard implementation DefaultPositionUpdater. 
See Also:
IDocument
Position/**
 * 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.
Params:
event – the document event describing the document change/**
	 * 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);
}