001    /* PAVLOV -- Multiple Choice Study System
002     * Copyright (C) 2000 - 2004 T.J. Willis
003     * 
004     * This program is free software; you can redistribute it and/or
005     * modify it under the terms of the GNU General Public License
006     * as published by the Free Software Foundation; either version 2
007     * of the License, or (at your option) any later version.
008     *      
009     * This program is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRNTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012     * GNU General Public License for more details.
013     *          
014     * You should have received a copy of the GNU General Public License
015     * along with this program; if not, write to the Free Software
016     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
017     *  
018     * $Header: /cvsroot/pavlov/net/sourceforge/pavlov/randommedia/RandomAudioFactory.java,v 1.5 2004/05/10 14:58:54 tj_willis Exp $
019     */ 
020    package net.sourceforge.pavlov.randommedia;
021    
022    import java.io.File; 
023    import java.awt.event.*;
024    import net.sourceforge.pavlov.zipUtilities.*;
025    import java.applet.AudioClip;
026    import org.apache.log4j.*;
027    
028    /**
029     * This is a base class for random media factories.  A random media factory is
030     * supplied with a directory tree or JAR file or mixture of the two, and 
031     * randomly supplies a media object (i.e. an image, a sound) from the files.  
032     * Implementations often will require caching/preloading.
033     * @author <a href="mailto:tj_willis@users.sourceforge.net">T.J. Willis</a>
034     * @version $Revision: 1.5 $
035     */
036    public class RandomAudioFactory
037      extends AbstractRandomMediaFactory
038      implements ActionListener, RandomURLProvider
039    {
040        // FIXED: de-singleton this class
041        private ZipCapableFileFilter filter;
042        private SoundList list;
043        
044    
045    
046        
047        /**
048         * Describe <code>clearCache</code> method here.
049         *
050         */
051        public void clearCache() {
052            // FIXME: implement this
053        }
054    
055        public RandomAudioFactory(File myDir)
056        {
057            // super(myDir) would save a lot of processing
058            super(myDir.toString());
059            zinit(myDir);
060        }
061    
062        private void zinit(File rootDir){
063            setRootDirectory(rootDir);
064            list = new SoundList(this,50);
065            list.loadObjects(10);
066        }
067    
068        public RandomAudioFactory()
069        {
070            super();
071            File foo = new File("resources/audio");
072            zinit(foo);
073        }
074    
075        void loadClips(int num)
076        {
077            list.loadObjects(num);
078        }
079    
080        /**
081         * Describe <code>getFileFilter</code> method here.
082         *
083         * @return a <code>ZipCapableFileFilter</code> value
084         */
085        protected ZipCapableFileFilter getFileFilter()
086        {
087            if (filter!=null) return filter;
088            filter = new SoundFileFilter();
089            return filter;
090        }
091    
092    
093        public AudioClip getRandomClip()
094        {
095            return list.getClip();
096    
097        }
098     
099        /**
100         * Describe <code>playRandomClip</code> method here.
101         *
102         */
103        public void playRandomClip()
104        {
105            assert list!=null : "Audio List is null";
106    
107            list.playClip();
108            //list.manageCache();
109        }
110    
111    }
112    
113    
114    
115