/*
 *  This file is part of the Haven & Hearth game client.
 *  Copyright (C) 2009 Fredrik Tolf <fredrik@dolda2000.com>, and
 *                     Björn Johannessen <johannessen.bjorn@gmail.com>
 *
 *  Redistribution and/or modification of this file is subject to the
 *  terms of the GNU Lesser General Public License, version 3, as
 *  published by the Free Software Foundation.
 *
 *  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.
 *
 *  Other parts of this source tree adhere to other copying
 *  rights. Please see the file `COPYING' in the root directory of the
 *  source tree for details.
 *
 *  A copy the GNU Lesser General Public License is distributed along
 *  with the source tree of which this file is a part in the file
 *  `doc/LPGL-3'. If it is missing for any reason, please see the Free
 *  Software Foundation's website at <http://www.fsf.org/>, or write
 *  to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 *  Boston, MA 02111-1307 USA
 */

package haven;

import java.util.*;
import javax.media.opengl.*;
import static haven.GOut.checkerr;

public abstract class GLObject {
    private static final Map<GL, Collection<GLObject>> disposed = new HashMap<GL, Collection<GLObject>>();
    private boolean del;
    public final GL2 gl;
    
    public GLObject(GL2 gl) {
	this.gl = gl;
    }
    
    public void dispose() {
	Collection<GLObject> can;
	synchronized(disposed) {
	    if(del)
		return;
	    del = true;
	    can = disposed.get(gl);
	    if(can == null) {
		can = new LinkedList<GLObject>();
		disposed.put(gl, can);
	    }
	}
	synchronized(can) {
	    can.add(this);
	}
    }
    
    protected void finalize() {
	dispose();
    }
    
    protected abstract void delete();
    
    public static void disposeall(GL2 gl) {
	Collection<GLObject> can;
	synchronized(disposed) {
	    can = disposed.get(gl);
	    if(can == null)
		return;
	}
	Collection<GLObject> copy;
	synchronized(can) {
	    copy = new ArrayList<GLObject>(can);
	    can.clear();
	}
	for(GLObject obj : copy)
	    obj.delete();
	checkerr(gl);
    }
}