/* $Id: UMLEventParameterListModel.java 17894 2010-01-12 21:29:01Z linus $
 *****************************************************************************
 * Copyright (c) 2009 Contributors - see below
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    mvw
 *****************************************************************************
 *
 * Some portions of this file was previously release using the BSD License:
 */

// Copyright (c) 1996-2009 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
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package org.argouml.uml.ui.behavior.state_machines;

import java.util.Collection;
import java.util.List;

import org.argouml.model.Model;
import org.argouml.uml.ui.UMLModelElementOrderedListModel2;

/**
 * A list model for the parameters belonging to an event.
 *
 * @since Dec 14, 2002
 * @author jaap.branderhorst@xs4all.nl
 */
public class UMLEventParameterListModel 
    extends UMLModelElementOrderedListModel2 {


    /**
     * Constructor for UMLEventParameterListModel.
     */
    public UMLEventParameterListModel() {
        super("parameter");
    }

    /*
     * @see org.argouml.uml.ui.UMLModelElementListModel2#buildModelList()
     */
    protected void buildModelList() {
        //setAllElements(((MEvent)getTarget()).getParameters());
        setAllElements(Model.getFacade().getParameters(getTarget()));
    }

    /*
     * @see org.argouml.uml.ui.UMLModelElementListModel2#isValidElement(Object)
     */
    protected boolean isValidElement(Object element) {
        return Model.getFacade().getParameters(getTarget()).contains(element);
    }

    @Override
    protected void moveDown(int index) {
        Object event = getTarget();
        Collection c = Model.getFacade().getParameters(event);
        if (c instanceof List && index < c.size() - 1) {
            Object mem = ((List) c).get(index);
            Model.getCoreHelper().removeParameter(event, mem);
            Model.getCoreHelper().addParameter(event, index + 1, mem);
        }
    }

    @Override
    protected void moveToBottom(int index) {
        Object event = getTarget();
        Collection c = Model.getFacade().getParameters(event);
        if (c instanceof List && index < c.size() - 1) {
            Object mem = ((List) c).get(index);
            Model.getCoreHelper().removeParameter(event, mem);
            Model.getCoreHelper().addParameter(event, c.size() - 1, mem);
        }
    }

    @Override
    protected void moveToTop(int index) {
        Object event = getTarget();
        Collection c = Model.getFacade().getParameters(event);
        if (c instanceof List && index > 0) {
            Object mem = ((List) c).get(index);
            Model.getCoreHelper().removeParameter(event, mem);
            Model.getCoreHelper().addParameter(event, 0, mem);
        }
    }

}