// $Id: ActionSetClassifierRoleMultiplicity.java,v 1.2 2004/09/19 19:29:58 mvw Exp $
// Copyright (c) 2003-2004 The Regents of the University of California. All
// Rights Reserved. Permission to use, copy, modify, and distribute this
// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph appear in all copies. This software program and
// documentation are copyrighted by The Regents of the University of
// California. The software program and documentation are supplied "AS
// IS", without any accompanying services from The Regents. The Regents
// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
// was developed for research purposes and is advised not to rely
// exclusively on the program for any reason. IN NO EVENT SHALL THE
// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
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package org.argouml.uml.ui.behavior.collaborations;

import org.argouml.model.ModelFacade;
import org.argouml.uml.ui.ActionSetMultiplicity;


/**
 * 
 * @author mkl
 *
 */
public class ActionSetClassifierRoleMultiplicity extends ActionSetMultiplicity {

    private static final ActionSetClassifierRoleMultiplicity SINGLETON = 
        new ActionSetClassifierRoleMultiplicity();

    /**
     * 
     */
    public ActionSetClassifierRoleMultiplicity() {
        super();
    }

    /**
     * @see org.argouml.uml.ui.ActionSetMultiplicity#setSelectedItem(
     * java.lang.Object, java.lang.Object)
     */
    public void setSelectedItem(Object item, Object target) {
        if (target != null
                && ModelFacade.isAClassifierRole(target)) {
            if (org.argouml.model.ModelFacade.isAMultiplicity(item)) {
                ModelFacade.setMultiplicity(target, item);
            } else
                ModelFacade.setMultiplicity(target, null);

        }
    }

    /**
     * @return Returns the SINGLETON.
     */
    public static ActionSetClassifierRoleMultiplicity getInstance() {
        return SINGLETON;
    }
}