/** *   Copyright 2004 Carlos Silva A. *  *   Licensed under the Apache License, Version 2.0 (the "License"); *   you may not use this file except in compliance with the License.  *   You may obtain a copy of the License at   *  *   http://www.apache.org/licenses/LICENSE-2.0 *  *   Unless required by applicable law or agreed to in writing, software *   distributed under the License is distributed on an "AS IS" BASIS, *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *   See the License for the specific language governing permissions and *   limitations under the License. *  */package jgantt.view.dialogs;import java.awt.Window;import java.awt.event.WindowEvent;import java.awt.event.WindowListener;import jgantt.model.ProjectListener;import jgantt.view.adapters.ProjectViewModel;import jgantt.view.adapters.ProjectViewModelListener;/** * RemoveObservers quita los observadores cuando una ventana se cierra *  * <p>$Date: 2004/04/24 06:44:25 $</p>  * @version $Revision: 1.4 $ * @author Carlos Silva */public class RemoveObservers implements WindowListener {	ProjectListener prjObs;	ProjectViewModelListener pvmObs;	ProjectViewModel pvModel;	public RemoveObservers(Window w,			ProjectViewModel pvModel,				ProjectViewModelListener pvmObs,		ProjectListener prjObs) {		this.pvmObs = pvmObs;		this.prjObs = prjObs;		this.pvModel = pvModel;		w.addWindowListener(this);	}	public void windowActivated(WindowEvent arg0) {	}	public void windowClosed(WindowEvent arg0) {	}	public void windowClosing(WindowEvent arg0) {		if (pvmObs != null)			pvModel.removeListener(pvmObs);		if (prjObs != null)			pvModel.getProject().removeListener(prjObs);	}	public void windowDeactivated(WindowEvent arg0) {	}	public void windowDeiconified(WindowEvent arg0) {	}	public void windowIconified(WindowEvent arg0) {	}	public void windowOpened(WindowEvent arg0) {	}}