plugins/org.eclipse.actf.ai.audio.description/src/org/eclipse/actf/ai/audio/description/impl/MediaControlImpl.java

/*******************************************************************************
 * Copyright (c) 2007 IBM Corporation and Others
 * 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:
 *    Daisuke SATO - initial API and implementation
 *******************************************************************************/

package org.eclipse.actf.ai.audio.description.impl;

import java.util.HashMap;

import org.eclipse.actf.ai.audio.description.DescriptionPlugin;
import org.eclipse.actf.ai.audio.description.IMetadataProvider;
import org.eclipse.actf.ai.audio.description.Messages;
import org.eclipse.actf.ai.navigator.IMediaControl;




public class MediaControlImpl implements IMediaControl {

    private HashMap<IHandle, MetadataManager> map = new HashMap<IHandle, MetadataManager>();
    //private List<MetadataManager> managers = new Vector<MetadataManager>();
    
    MetadataManager manager;
    MetadataManager oldManager;
    
    IHandle old = null;
    
    IHandle handle;

    public void dispose(IHandle handle) {
    }

    public void start(IHandle handle) {
        //if (handle.getSoundControl() == null || handle.getVideoControl() == null)
            //return;
        initialize(handle);
    }

    private void initialize(IHandle handle) {
        this.handle = handle;
        MetadataManager temp = map.get(handle);
        IMetadataProvider provider = null;
        
        if(temp == null){
            String url = handle.getWebBrowser().getURL();
            provider = DescriptionPlugin.getDefault().getMetadata(url);
            temp = new MetadataManager(handle, provider);
            
            if(handle.getVideoControl() != null)
                handle.getVideoControl().addEventListener(new MediaSyncEventListener(handle, temp));
            //System.out.println(temp);
            //map.put(handle, temp);
        }
        if(manager != null){
            manager.stop();
        }
        manager = temp;
        manager.start();
        DescriptionPlugin.getDefault().setActiveMetadataProvider(provider);
        
        if(manager.hasMetadata()){
            if(oldManager != null){
                System.out.println(oldManager.getMetadataProvider());
                System.out.println(manager.getMetadataProvider());
            }
            if(oldManager == null || oldManager.getMetadataProvider() != manager.getMetadataProvider()){
                if(handle.getVoice() != null){
                    //speakInfo(false);
                }
                oldManager = manager;
            }
        }else{
            //handle.getVoice().speak(Messages.getString("Metadata.notAvailable"), false);
        }
    }
    
    public void speakInfo(boolean flush) {
        DescriptionPlugin plugin = DescriptionPlugin.getDefault();
        if (!plugin.isAvailable())
            return;
        if (handle.getVoice() == null)
            return;
        
        if (plugin.getEnable()) {
            handle.getVoice().speak(Messages.getString("AudioDescription.on"), flush);
        } else {
            handle.getVoice().speak(Messages.getString("AudioDescription.off"), flush);
        }
    }

    public int toggleEnable() {
        DescriptionPlugin plugin = DescriptionPlugin.getDefault();
        return plugin.toggleEnable();
    }
    
    public boolean isAvailable(){
        DescriptionPlugin plugin = DescriptionPlugin.getDefault();
        return plugin.isAvailable();
    }

    public boolean toggleViewShowing() {
        DescriptionPlugin plugin = DescriptionPlugin.getDefault();
        return plugin.getDescriptionView().toggleViewShowing();
    }

    public boolean isEnabled() {
        DescriptionPlugin plugin = DescriptionPlugin.getDefault();
        return plugin.getEnable();
    }
}