EventManager.java

/*****************************************************************************
 * EventManager.java
 *****************************************************************************
 * Copyright © 2011-2012 VLC authors and VideoLAN
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

package org.videolan.vlc;

import java.util.ArrayList;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;

public class EventManager {

    /*
     * Be sure to subscribe to events you need in the JNI too.
     */

    // public static final int MediaMetaChanged = 0;
    // public static final int MediaSubItemAdded = 1;
    public static final int MediaDurationChanged = 2;
    public static final int MediaParsedChanged = 3;
    // public static final int MediaFreed = 4;
    public static final int MediaStateChanged = 5;

    // public static final int MediaPlayerMediaChanged = 0x100;
    // public static final int MediaPlayerNothingSpecial = 0x101;
    public static final int MediaPlayerOpening = 0x102;
    public static final int MediaPlayerBuffering = 0x103;
    public static final int MediaPlayerPlaying = 0x104;
    public static final int MediaPlayerPaused = 0x105;
    public static final int MediaPlayerStopped = 0x106;
    // public static final int MediaPlayerForward = 0x107;
    // public static final int MediaPlayerBackward = 0x108;
    public static final int MediaPlayerEndReached = 0x109;
    public static final int MediaPlayerEncounteredError = 0x10a;
    // public static final int MediaPlayerTimeChanged = 0x10b;
    // public static final int MediaPlayerPositionChanged = 0x10c;
    public static final int MediaPlayerSeekableChanged = 0x10d;
    public static final int MediaPlayerPausableChanged = 0x10e;
    // public static final int MediaPlayerTitleChanged = 0x10f;
    // public static final int MediaPlayerSnapshotTaken = 0x110;
    public static final int MediaPlayerLengthChanged = 0x111;

    // public static final int MediaListItemAdded = 0x200;
    // public static final int MediaListWillAddItem = 0x201;
    // public static final int MediaListItemDeleted = 0x202;
    // public static final int MediaListWillDeleteItem = 0x203;

    // public static final int MediaListViewItemAdded = 0x300;
    // public static final int MediaListViewWillAddItem = 0x301;
    // public static final int MediaListViewItemDeleted = 0x302;
    // public static final int MediaListViewWillDeleteItem = 0x303;

    // public static final int MediaListPlayerPlayed = 0x400;
    // public static final int MediaListPlayerNextItemSet = 0x401;
    // public static final int MediaListPlayerStopped = 0x402;

    // public static final int MediaDiscovererStarted = 0x500;
    // public static final int MediaDiscovererEnded = 0x501;

    // public static final int VlmMediaAdded = 0x600;
    // public static final int VlmMediaRemoved = 0x601;
    // public static final int VlmMediaChanged = 0x602;
    // public static final int VlmMediaInstanceStarted = 0x603;
    // public static final int VlmMediaInstanceStopped = 0x604;
    // public static final int VlmMediaInstanceStatusInit = 0x605;
    // public static final int VlmMediaInstanceStatusOpening = 0x606;
    // public static final int VlmMediaInstanceStatusPlaying = 0x607;
    // public static final int VlmMediaInstanceStatusPause = 0x608;
    // public static final int VlmMediaInstanceStatusEnd = 0x609;
    // public static final int VlmMediaInstanceStatusError = 0x60a;

    public static final int MediaPlayerBufferingTotal = 0x700;
    public static final int MediaPlayerModuleChanged = 0x701;

    private ArrayList<Handler> mEventHandler;
    private static EventManager mInstance;

    private EventManager() {
        mEventHandler = new ArrayList<Handler>();
    }

    public static EventManager getIntance() {
        if (mInstance == null) {
            mInstance = new EventManager();
        }
        return mInstance;
    }

    public void addHandler(Handler handler) {
        if (!mEventHandler.contains(handler))
            mEventHandler.add(handler);
    }

    public void removeHandler(Handler handler) {
        mEventHandler.remove(handler);
    }

    /** This method is called by a native thread **/
    public void callback(int event, Bundle args) {
        for (Handler handler : mEventHandler) {
            Message msg = handler.obtainMessage(LibVlcMessages.VLC_EVENT, args);
            msg.arg1 = event;
            handler.sendMessage(msg);
        }
    }
}