/**
 * ======================== legal notice ======================
 * 
 * File: SelectedMedia.java Created: 13. June 2012, 04:57 Author: <a
 * href="mailto:geronimo013@gmx.de">Geronimo</a> Project: cmpc - a java frontend
 * (client) part of compound media player uses external players to play the
 * media
 * 
 * CMP - compound media player
 * 
 * is a client/server mediaplayer intended to play any media from any
 * workstation without the need to export or mount shares. cmps is an easy to
 * use backend with a (ready to use) HTML-interface. Additionally the backend
 * supports authentication via HTTP-digest authorization. cmpc is a client with
 * vdr-like osd-menues.
 * 
 * Copyright (c) 2012 Reinhard Mantey, some rights reserved! published under
 * Creative Commons by-sa For details see
 * http://creativecommons.org/licenses/by-sa/3.0/
 * 
 * The cmp project's homepage is at
 * http://projects.vdr-developer.org/projects/cmp
 * 
 * --------------------------------------------------------------
 */
package de.schwarzrot.control.support;


import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import ca.odell.glazedlists.EventList;
import ca.odell.glazedlists.swing.DefaultEventSelectionModel;
import de.schwarzrot.media.domain.Media;


public class SelectedMedia implements ListSelectionListener {
    public static final String MEDIA_PROPERTY = "media";


    public SelectedMedia(EventList<Media> source) {
        pcs = new PropertyChangeSupport(this);
        mediaList = source;
    }


    public void addPropertyChangeListener(PropertyChangeListener listener) {
        pcs.addPropertyChangeListener(listener);
    }


    public void clear() {
        pcs.firePropertyChange(MEDIA_PROPERTY, this.media, this.media = null);
    }


    public Media getMedia() {
        return media;
    }


    public void removePropertyChangeListener(PropertyChangeListener listener) {
        pcs.removePropertyChangeListener(listener);
    }


    @Override
    public void valueChanged(ListSelectionEvent e) {
        if (e.getValueIsAdjusting())
            return;
        if (e.getSource() instanceof DefaultEventSelectionModel) {
            @SuppressWarnings("unchecked")
            DefaultEventSelectionModel<Media> sm = (DefaultEventSelectionModel<Media>) e.getSource();

            if (sm.isSelectionEmpty())
                return;
            int i = sm.getLeadSelectionIndex();

            if (i > 0)
                pcs.firePropertyChange(MEDIA_PROPERTY, this.media, this.media = mediaList.get(i));
        }
    }

    private Media media;
    private PropertyChangeSupport pcs;
    private EventList<Media> mediaList;
}