HandlerRegistrationCollection.java

/*
 * Copyright 2010 Daniel Kurka
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.googlecode.mgwt.dom.client.event.mouse;

import com.google.gwt.event.shared.HandlerRegistration;

import java.util.LinkedList;

/**
 * A collection of HandlerRegistrations which behaves like a single
 * registration: On remove all collected Handlers are removed.
 *
 * @author Daniel Kurka
 */
public class HandlerRegistrationCollection implements HandlerRegistration,
    com.google.web.bindery.event.shared.HandlerRegistration {

	private LinkedList<com.google.web.bindery.event.shared.HandlerRegistration> collectedHandlers = new LinkedList<com.google.web.bindery.event.shared.HandlerRegistration>();

	public HandlerRegistrationCollection() {
	}

	public void addHandlerRegistration(HandlerRegistration handlerRegistration) {
		collectedHandlers.add(handlerRegistration);
	}

	public void addHandlerRegistration(com.google.web.bindery.event.shared.HandlerRegistration handlerRegistration) {
		collectedHandlers.add(handlerRegistration);
	}

	@Override
	public void removeHandler() {
		for (com.google.web.bindery.event.shared.HandlerRegistration handlerRegistration : collectedHandlers) {
			handlerRegistration.removeHandler();
		}
		collectedHandlers.clear();
	}
}