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/*
 * @(#)MidiParameterControlManager.java beta8   2006/04/23
 *
 * Copyright (C) 2008    Adam King (adamjking@optusnet.com.au)
 *
 * This application 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 application 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 application; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */


package org.midibox.midi;

import java.util.Iterator;
import java.util.Observable;
import java.util.Observer;
import java.util.Vector;

import javax.sound.midi.MidiMessage;
import javax.sound.midi.Receiver;

public class MidiParameterControlManager extends Observable implements
        Observer, Receiver {

    protected Vector midiParametersControls;

    protected int globalChannel = 0;

    protected Receiver receiver;

    public MidiParameterControlManager(Receiver receiver, int globalChannel) {
        this.globalChannel = globalChannel;
        this.receiver = receiver;
        midiParametersControls = new Vector();
    }

    public Receiver getReceiver() {
        return receiver;
    }

    public void setReceiver(Receiver receiver) {
        this.receiver = receiver;

        Iterator it = midiParametersControls.iterator();

        while (it.hasNext()) {
            MidiParameterControl midiParameter = (MidiParameterControl) it
                    .next();
            if (midiParameter.isGlobal()) {
                midiParameter.setReceiver(receiver);
            }
        }
    }

    public Vector getMidiParametersControls() {
        return midiParametersControls;
    }

    public void addMidiParameter(MidiParameter midiParameter) {
        midiParametersControls.remove(midiParameter);
        midiParametersControls.add(midiParameter);
        midiParameter.deleteObserver(this);
        midiParameter.addObserver(this);
    }

    public void removeMidiParameter(MidiParameter midiParameter) {
        midiParameter.deleteObserver(this);
        midiParameter.addObserver(this);
    }

    public int getGlobalChannel() {
        return globalChannel;
    }

    public void setGlobalChannel(int globalChannel) {
        this.globalChannel = globalChannel;

        Iterator it = midiParametersControls.iterator();

        while (it.hasNext()) {
            MidiParameterControl midiParameter = (MidiParameterControl) it
                    .next();
            if (midiParameter.isGlobal()) {
                midiParameter.setMidiChannel(globalChannel);
            }
        }

        setChanged();
        notifyObservers();
        clearChanged();
    }

    public void close() {

    }

    public void send(MidiMessage message, long timestamp) {
        Object[] parametersArray = midiParametersControls.toArray();

        for (int p = 0; p < parametersArray.length; p++) {
            if (parametersArray[p] != null) {
                ((MidiParameterControl) parametersArray[p]).send(message,
                        timestamp);
            }
        }
    }

    public void update(Observable observable, Object object) {
        if (object == MidiParameterControl.GLOBAL) {
            if (((MidiParameterControl) observable).isGlobal()) {
                ((MidiParameterControl) observable)
                        .setMidiChannel(globalChannel);
            }
        }
    }
}