/*******************************************************************************
* Copyright (c) 2006-2012
* Software Technology Group, Dresden University of Technology
* DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
*
* 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:
* Software Technology Group - TU Dresden, Germany;
* DevBoost GmbH - Berlin, Germany
* - initial API and implementation
******************************************************************************/
/*
* @(#)ToolListener.java 3.0 2006-02-13
*
* Copyright (c) 1996-2006 by the original authors of JHotDraw
* and all its contributors.
* All rights reserved.
*
* The copyright of this software is owned by the authors and
* contributors of the JHotDraw project ("the copyright holders").
* You may not use, copy or modify this software, except in
* accordance with the license agreement you entered into with
* the copyright holders. For details see accompanying license terms.
*/
package org.jhotdraw.draw;
import java.util.*;
/**
* Change event passed to ToolListener's.
* <p>
* Design pattern:<br>
* Name: Observer.<br>
* Role: Observer.<br>
* Partners: {@link Tool} as Subject.
*
* @author Werner Randelshofer
* @version 3.0 2003-02-13 Revised to support multiple views.
* <br>1.0 2003-12-01 Derived from JHotDraw 5.4b1.
*/
public interface ToolListener extends EventListener {
/**
* Informs the listener that a tool has starteds interacting with a
* specific drawing view.
*/
void toolStarted(ToolEvent event);
/**
* Informs the listener that a tool has done its interaction.
* This method can be used to switch back to the default tool.
*/
void toolDone(ToolEvent event);
/**
* Sent when an area of the drawing view needs to be repainted.
*/
public void areaInvalidated(ToolEvent e);
}