Return true if no mouse buttons are pressed - Java Swing

Java examples for Swing:Mouse Event

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Description

Return true if no mouse buttons are pressed

Demo Code

/*/* w w  w  . ja v  a  2 s .com*/
 *   EuroCarbDB, a framework for carbohydrate bioinformatics
 *
 *   Copyright (c) 2006-2009, Eurocarb project, or third-party contributors as
 *   indicated by the @author tags or express copyright attribution
 *   statements applied by the authors.  
 *
 *   This copyrighted material is made available to anyone wishing to use, modify,
 *   copy, or redistribute it subject to the terms and conditions of the GNU
 *   Lesser General Public License, as published by the Free Software Foundation.
 *   A copy of this license accompanies this distribution in the file LICENSE.txt.
 *
 *   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 Lesser General Public License
 *   for more details.
 *
 *   Last commit: $Rev: 1210 $ by $Author: glycoslave $ on $Date:: 2009-06-12 #$  
 */
//package com.java2s;

import java.awt.event.*;

public class Main {
    private static final int MOD_MASK = MouseEvent.CTRL_MASK
            | MouseEvent.SHIFT_MASK | MouseEvent.ALT_MASK
            | MouseEvent.META_MASK | MouseEvent.ALT_GRAPH_MASK;

    /**
       Return <code>true</code> if no mouse buttons are pressed
       @param e the {@link MouseEvent} information sent to the mouse
       events listener  
     */
    static public boolean isNothingPressed(MouseEvent e) {
        return ((e.getModifiers() & MOD_MASK) == 0);
    }
}

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