GroupAnySync.java

/*
 *  GroupAnySync.java
 *  Eisenkraut
 *
 *  Copyright (c) 2004-2016 Hanns Holger Rutz. All rights reserved.
 *
 *  This software is published under the GNU General Public License v3+
 *
 *
 *	For further information, please contact Hanns Holger Rutz at
 *	contact@sciss.de
 */

package de.sciss.eisenkraut.net;

import java.util.HashSet;
import java.util.Set;

import de.sciss.net.OSCBundle;

public class GroupAnySync
		extends GroupSync
		implements GroupSync.Slave {

	private final Set<GroupSync> syncs = new HashSet<GroupSync>();
	private int numActive = 0;

	public GroupAnySync()
	{
		super();
	}

	public void addSync(GroupSync s) {
		if (!syncs.add(s)) throw new IllegalArgumentException("Sync already added");
		s.addSlave(this);
		if (s.isActive() && (++numActive == 1)) {
			activate(null);
		}
	}

	public void removeSync(GroupSync s) {
		if (!syncs.remove(s)) throw new IllegalArgumentException("Sync not found");
		s.removeSlave(this);
//System.err.println( "removeSync. isActive = "+s.isActive()+"; numActive = "+numActive );		
		if (s.isActive() && (--numActive == 0)) {
			deactivate(null);
		}
	}

	public void clearSyncs() {
		syncs.clear();
		numActive = 0;
		active = false;
	}

	// -------------- Disposable interface --------------

	public void dispose()
	{
		clearSyncs();
		super.dispose();
	}

	// ------------------ GroupSync.Slave interface ------------------

	public void groupActivate( OSCBundle bndl )
	{
		if( ++numActive == 1 ) {
			activate( bndl );
		}
	}
	
	public void groupDeactivate( OSCBundle bndl )
	{
		if( --numActive == 0 ) {
			deactivate( bndl );
		}
	}
}