// $Id: StylePanelFigMessage.java,v 1.12 2004/09/21 19:03:32 mvw Exp $
// Copyright (c) 1996-99 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.uml.diagram.ui;

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ItemEvent;

import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.event.DocumentEvent;

import org.argouml.ui.StylePanelFigNodeModelElement;
import org.tigris.gef.util.Converter;

/**
 * Stylepanel which allows to set the arrow of a message.
 * 
 * @see FigMessage
 */
public class StylePanelFigMessage extends StylePanelFigNodeModelElement {

    
    private JLabel arrowLabel = new JLabel("Arrow: ");

    private JComboBox arrowField = new JComboBox(Converter
            .convert(FigMessage.getArrowDirections()));

    
    /**
     * The constructor.
     * 
     */
    public StylePanelFigMessage() {
        super();
        GridBagLayout gb = (GridBagLayout) getLayout();
        GridBagConstraints c = new GridBagConstraints();
        c.fill = GridBagConstraints.BOTH;
        c.ipadx = 0;
        c.ipady = 0;

        arrowField.addItemListener(this);
        c.gridy = 4;
        gb.setConstraints(arrowLabel, c);
        add(arrowLabel);

        gb.setConstraints(arrowField, c);
        add(arrowField);
        arrowField.setSelectedIndex(0);

        remove(getFillField());
        remove(getFillLabel());
    }

    ////////////////////////////////////////////////////////////////
    // accessors

    /**
     * @see org.argouml.ui.TabTarget#refresh()
     */
    public void refresh() {
        super.refresh();
        int direction = ((FigMessage) getPanelTarget()).getArrow();
        arrowField.setSelectedItem(FigMessage.getArrowDirections()
                .elementAt(direction));
    }

    /**
     * Set the arrow direction for the target.
     */
    public void setTargetArrow() {
        String ad = (String) arrowField.getSelectedItem();
        int arrowDirection = FigMessage.getArrowDirections().indexOf(ad);
        if (getPanelTarget() == null || arrowDirection == -1) return;
        ((FigMessage) getPanelTarget()).setArrow(arrowDirection);
        getPanelTarget().endTrans();
    }

    ////////////////////////////////////////////////////////////////
    // event handling

    /**
     * @see javax.swing.event.DocumentListener#removeUpdate(javax.swing.event.DocumentEvent)
     */
    public void removeUpdate(DocumentEvent e) {
        insertUpdate(e);
    }

    /**
     * @see java.awt.event.ItemListener#itemStateChanged(java.awt.event.ItemEvent)
     */
    public void itemStateChanged(ItemEvent e) {
        Object src = e.getSource();
        if (src == arrowField)
            setTargetArrow();
        else
            super.itemStateChanged(e);
    }

} /* end class StylePanelFigMessage */