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Geomajas GWT client: API

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/*
 * This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
 *
 * Copyright 2008-2013 Geosparc nv, http://www.geosparc.com/, Belgium.
 *
 * The program is available in open source according to the GNU Affero
 * General Public License. All contributions in this program are covered
 * by the Geomajas Contributors License Agreement. For full licensing
 * details, see LICENSE.txt in the project root.
 */

package org.geomajas.gwt.client.event;

import org.geomajas.annotation.Api;
import org.geomajas.annotation.UserImplemented;

import com.google.gwt.event.shared.EventHandler;
import com.google.web.bindery.event.shared.Event.Type;

/**
 * Handler for the addition and removal of layers within a map.
 * 
 * @author Jan De Moerloose
 * @since 1.0.0
 */
@Api(allMethods = true)
@UserImplemented
public interface MapCompositionHandler extends EventHandler {

	/**
	 * The type of the handler.
	 */
	Type TYPE = new Type();

	/**
	 * Called when a new layer has been added to the map model.
	 * 
	 * @param event
	 *            The event.
	 */
	void onLayerAdded(LayerAddedEvent event);

	/**
	 * Called when a existing layer has been removed from the map model.
	 * 
	 * @param event
	 *            The event.
	 */
	void onLayerRemoved(LayerRemovedEvent event);
}