/**********************************************
    * Copyright (C) 2011 Lukas Laag
    * This file is part of svgreal.
    * 
    * svgreal 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 3 of the License, or
    * (at your option) any later version.
    * 
   * svgreal 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 svgreal.  If not, see http://www.gnu.org/licenses/
   **********************************************/
  package org.vectomatic.svg.edit.client.event;
  
  import org.vectomatic.svg.edit.client.command.ICommandFactory;
  
  import com.google.gwt.event.shared.GwtEvent;
  
  /**
   * Event emitted when the command factory selector changes
   * @author laaglu
   */
  public class CommandFactorySelectorChangeEvent extends GwtEvent<CommandFactorySelectorChangeHandler> {
  	/**
  	 * Handler type.
  	 */
  	private static Type<CommandFactorySelectorChangeHandler> TYPE;
  
  	private final ICommandFactory commandFactory;
  
  	public CommandFactorySelectorChangeEvent(ICommandFactory commandFactory) {
  		this.commandFactory = commandFactory;
  	}
  
  	@Override
  	public com.google.gwt.event.shared.GwtEvent.Type<CommandFactorySelectorChangeHandler> getAssociatedType() {
  		if (TYPE == null) {
  			TYPE = new Type<CommandFactorySelectorChangeHandler>();
  		}
  		return TYPE;
  	}
  
  	/**
  	 * Ensures the existence of the handler hook and then returns it.
  	 * 
  	 * @return returns a handler hook
  	 */
  	public static Type<CommandFactorySelectorChangeHandler> getType() {
  		if (TYPE == null) {
  			TYPE = new Type<CommandFactorySelectorChangeHandler>();
  		}
  		return TYPE;
  	}
  
  	@Override
  	protected void dispatch(CommandFactorySelectorChangeHandler handler) {
  		handler.onChange(this);
  	}
  
  	public ICommandFactory getCommandFactory() {
  		return commandFactory;
  	}
  
  }