/*
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 *
 * The Original Code is Protege-2000.
 *
 * The Initial Developer of the Original Code is Stanford University. Portions
 * created by Stanford University are Copyright (C) 2007.  All Rights Reserved.
 *
 * Protege was developed by Stanford Medical Informatics
 * (http://www.smi.stanford.edu) at the Stanford University School of Medicine
 * with support from the National Library of Medicine, the National Science
 * Foundation, and the Defense Advanced Research Projects Agency.  Current
 * information about Protege can be obtained at http://protege.stanford.edu.
 *
 */

package edu.stanford.smi.protege.util;

import java.awt.event.*;

import javax.swing.*;

/**
 * An adapter that listeners for popup menu mouse events and pops up a menu.  The actual menu popped up is delegated to
 * a subclass. 
 *
 * @author    Ray Fergerson <fergerson@smi.stanford.edu>
 */
public abstract class PopupMenuMouseListener extends MouseAdapter {
    private JComponent _component;

    protected PopupMenuMouseListener(JComponent c) {
        _component = c;
    }

    private void checkEvent(MouseEvent event) {
        if (event.isPopupTrigger()) {
            setSelection(_component, event.getX(), event.getY());
            JPopupMenu menu = getPopupMenu();
            if (menu != null) {
                menu.show(_component, event.getX(), event.getY());
            }
        }
    }

    protected abstract JPopupMenu getPopupMenu();

    public void mouseClicked(MouseEvent event) {
        checkEvent(event);
    }

    public void mousePressed(MouseEvent event) {
        checkEvent(event);
    }

    public void mouseReleased(MouseEvent event) {
        checkEvent(event);
    }

    protected abstract void setSelection(JComponent c, int x, int y);
}
