view java/src/uk/ac/qmul/eecs/ccmi/diagrammodel/ElementChangedEvent.java @ 0:9418ab7b7f3f

Initial import

/*  
 CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
  
 Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package uk.ac.qmul.eecs.ccmi.diagrammodel;

import java.util.EventObject;

/**
 *  ElementChangedEvent is used to notify the model listeners that an element 
 *  in the model has been changed (e.g. it has a new name).
 *
 */
@SuppressWarnings("serial")
public class ElementChangedEvent extends EventObject {
	
	public ElementChangedEvent( Object source, DiagramElement element, String changeType) {
		super(source);
		this.changeType = changeType;
		this.element = element;
	}

	/**
	 * A String representing the change type. Subclasses of DiagramNode and DiagramEdge 
	 * can throw their own events by passing as argument a String that describes the change. 
	 * Such events will have no effect in the model but will be fired to all the registered ChangeEventListener.
	 *   
	 * @return a String describing the change type
	 */
	public String getChangeType(){
		return changeType;
	}
	
	/**
	 * Returns the DiagramElement that has been affected by this change 
	 * @return the DiagramElement that has been affected by this change
	 */
	public DiagramElement getDiagramElement(){
		return element;
	}
	
	private String changeType;
	DiagramElement element;
}