/* $Id: ModePlaceClassifierRole.java 17875 2010-01-12 21:02:56Z 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) 2007 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
// CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,
// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

package org.argouml.sequence2.diagram;

import java.awt.event.MouseEvent;
import java.util.List;

import org.tigris.gef.base.ModePlace;
import org.tigris.gef.graph.GraphFactory;
import org.tigris.gef.persistence.pgml.PgmlUtility;
import org.tigris.gef.presentation.Fig;

/**
 * Ensures that each new ClassifierRole has the same Y position and height as
 * all the existing ones.
 * 
 * @author bszanto
 * @author penyaskito
 */
class ModePlaceClassifierRole extends ModePlace {
    
    /**
     * @param gf The GraphFactory
     * @param instructions A string with the instructions for the tooltip
     */
    public ModePlaceClassifierRole(GraphFactory gf, String instructions) {
        super(gf, instructions);
    }
    
    @Override
    public void mousePressed(MouseEvent me) {
        super.mousePressed(me);
        postProcessing();
    }

    @Override
    public void mouseDragged(MouseEvent me) {
        super.mouseDragged(me);
        postProcessing();
    }

    
    /**
     * Set height and Y position of the new CR as the already existing CRs.
     */
    private void postProcessing() {
        List nodes = 
            PgmlUtility.getContentsNoEdges(editor.getLayerManager().getActiveLayer());
        int i = 0;
        boolean figClassifierRoleFound = false;
        Fig fig = null;
    
        // Get the first existing FigNode and if it exists set the
        // y position and height of _pers to be the same as it.
        while (i < nodes.size() && !figClassifierRoleFound) {
            fig = (Fig) nodes.get(i);
            if (fig != _pers && fig instanceof FigClassifierRole) {
                _pers.setY(fig.getY());
                _pers.setHeight(fig.getHeight());
                figClassifierRoleFound = true;
            }
            i++;
        }
    }
}