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A GWT encapsulation of the W3C File API

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/**********************************************
 * Copyright (C) 2011 Lukas laag
 * This file is part of lib-gwt-file.
 * 
 * lib-gwt-file is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * lib-gwt-file 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with lib-gwt-file.  If not, see http://www.gnu.org/licenses/
 **********************************************/
package org.vectomatic.file.events;

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

/**
 * A widget that implements this interface provides registration for
 * {@link LoadStartHandler} instances.
 */
public interface HasLoadStartHandlers extends HasHandlers {
	/**
	 * Adds a {@link LoadStartHandler} handler.
	 * 
	 * @param handler the begin handler
	 * @return {@link HandlerRegistration} used to remove this handler
	 */
	HandlerRegistration addLoadStartHandler(LoadStartHandler handler);
}