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/*******************************************************************************
 * Copyright (c) 2000, 2008 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;


import org.eclipse.jface.viewers.ISelection;


/**
 * A selection validator allows clients to test whether the selection they
 * received during selection changed notification is valid.
 * 
 * For example, selection and document changes that occur between the original
 * selection and the point in time the validator is called cause the selection
 * to be invalid.
 * 
 * Clients may implement and use this interface.
 * 
 *
 * @since 3.0
 */
public interface ISelectionValidator {

	/**
	 * Tests whether the given post selection is still valid.
	 *
	 * @param selection the selection
	 * @return true if the selection is still valid
	 */
	boolean isValid(ISelection selection);
}