/* $Id: UMLAssociationEndRoleBaseListModel.java 17896 2010-01-12 21:36:11Z 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:
 *    bobtarling
 *****************************************************************************
 *
 * Some portions of this file was previously release using the BSD License:
 */

// Copyright (c) 2002-2006 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.core.propertypanels.ui;

import org.argouml.model.Model;

/**
 * @since Oct 5, 2002
 * @author jaap.branderhorst@xs4all.nl
 */
class UMLAssociationEndRoleBaseListModel
    extends UMLModelElementListModel {

    /**
     * Constructor for UMLAssociationEndRoleBaseListModel.
     */
    public UMLAssociationEndRoleBaseListModel() {
        super("base");
    }

    /*
     * @see org.argouml.uml.ui.UMLModelElementListModel2#buildModelList()
     */
    protected void buildModelList() {
        removeAllElements();
        if (getTarget() != null
                && Model.getFacade().getBase(getTarget()) != null) {
            addElement(Model.getFacade().getBase(getTarget()));
        }
    }

    /*
     * @see org.argouml.uml.ui.UMLModelElementListModel2#isValidElement(Object)
     */
    protected boolean isValidElement(Object base) {
        if (!Model.getFacade().isAAssociationEnd(base)) {
            return false;
        }

        Object assocEndRole = getTarget();
        Object assocRole =
            Model.getFacade().getAssociation(assocEndRole);
        return Model.getFacade().getConnections(
                Model.getFacade().getBase(assocRole))
            .contains(base);
    }
}