popuplistener.java

用于GIS(全球地理系统)的分析和处理的代码。

/*
 * This file is part of the GeOxygene project source files. 
 * 
 * GeOxygene aims at providing an open framework which implements OGC/ISO specifications for 
 * the development and deployment of geographic (GIS) applications. It is a open source 
 * contribution of the COGIT laboratory at the Institut G閛graphique National (the French 
 * National Mapping Agency).
 * 
 * See: http://oxygene-project.sourceforge.net 
 *  
 * Copyright (C) 2005 Institut G閛graphique National
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation; 
 * either version 2.1 of the License, or any later version.
 *
 * This library 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with 
 * this library (see file LICENSE if present); if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *  
 */

package fr.ign.cogit.geoxygene.util.viewer;

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JPopupMenu;

/**
  * This class defines a Listener for the popup menu dedicated to the theme buttons of the (Geo)Object Viewer.
  *
  * @author Thierry Badard & Arnaud Braun
  * @version 1.0
  * 
  */

class PopupListener extends MouseAdapter {
	public JPopupMenu themepopup;

	public PopupListener(JPopupMenu tp) {
		this.themepopup = tp;
	}

	public void mousePressed(MouseEvent e) {
		maybeShowPopup(e);
	}

	public void mouseReleased(MouseEvent e) {
		maybeShowPopup(e);
	}

	private void maybeShowPopup(MouseEvent e) {
		if (e.isPopupTrigger()) {
			themepopup.show(e.getComponent(), e.getX(), e.getY());
		}
	}
}