/*******************************************************************************
* Copyright (c) 2004, 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.gef.examples.text;
/**
* @since 3.1
*/
public interface TextCommand {
/**
* Returns the viewer's selection range for the state after execution or redo.
* @since 3.1
* @param viewer the viewer
* @return the range
*/
SelectionRange getRedoSelectionRange(GraphicalTextViewer viewer);
SelectionRange getExecuteSelectionRange(GraphicalTextViewer viewer);
/**
* Returns the viewer's selection range for the state prior to execution.
* @since 3.1
* @param viewer the viewer
* @return the range
*/
SelectionRange getUndoSelectionRange(GraphicalTextViewer viewer);
}