| gvSIG desktop 1

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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.gvsig.fmap.mapcontext.rendering.legend;

import org.gvsig.tools.observer.Observer;

/**

 * Interface for observable drawing operations.

 * 

 * @author <a href="mailto:cordinyana@gvsig.org">C?sar Ordi?ana</a>

 */

public interface DrawingObservable {

        /**

         * Adds a new {@link Observer}.

         * 

         * @param observer

         *            the {@link Observer} to add

         */

        void addDrawingObserver(Observer observer);

        /**

         * Deletes a registered drawing {@link Observer} from the list of registered

         * ones.

         * 

         * @param observer

         *            to delete from the registered ones

         */

        void deleteDrawingObserver(Observer observer);

        /**

         * Deletes all the registered drawing {@link Observer} objects. 

         */

        void deleteDrawingObservers();

}