/**********************************************
    * 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.command.add;
  
  import org.vectomatic.dom.svg.OMSVGDocument;
  import org.vectomatic.dom.svg.OMSVGElement;
  import org.vectomatic.dom.svg.OMSVGGElement;
  import org.vectomatic.dom.svg.OMSVGSVGElement;
  import org.vectomatic.dom.svg.impl.SVGElement;
  import org.vectomatic.svg.edit.client.SvgrealApp;
  import org.vectomatic.svg.edit.client.command.CommandFactoryBase;
  import org.vectomatic.svg.edit.client.command.FactoryInstantiatorBase;
  import org.vectomatic.svg.edit.client.command.GenericAddCommand;
  import org.vectomatic.svg.edit.client.command.ICommand;
  import org.vectomatic.svg.edit.client.command.IFactoryInstantiator;
  import org.vectomatic.svg.edit.client.engine.SVGModel;
  import org.vectomatic.svg.edit.client.model.ModelConstants;
  import org.vectomatic.svg.edit.client.model.svg.SVGElementModel;
  
  /**
   * Command factory to add new groups to the the SVG model.
   * @author laaglu
   */
  public class AddGroupCommandFactory extends CommandFactoryBase {
  	@SuppressWarnings("serial")
  	public static final IFactoryInstantiator<AddGroupCommandFactory> INSTANTIATOR = new FactoryInstantiatorBase<AddGroupCommandFactory>(ModelConstants.INSTANCE.addGroupCmdFactory(), ModelConstants.INSTANCE.addGroupCmdFactoryDesc()) {
  		@Override
  		public AddGroupCommandFactory create() {
  			return new AddGroupCommandFactory();
  		}
  	};
  
  	@Override
  	public IFactoryInstantiator<?> getInstantiator() {
  		return INSTANTIATOR;
  	}
  
  	@Override
  	public void start(Object requester) {
  		SVGModel owner = SvgrealApp.getApp().getActiveModel();
  		OMSVGElement parent = owner.getTwinGroup();
  		OMSVGSVGElement svg = parent.getOwnerSVGElement();
  		OMSVGDocument document = (OMSVGDocument) svg.getOwnerDocument();
  		OMSVGGElement group = document.createSVGGElement();
  		parent.appendChild(group);
  		
  		SVGElement twin = (SVGElement) group.getElement();
  		SVGElement element = (SVGElement) twin.cloneNode(true);
  		owner.getElementGroup().getElement().appendChild(element);
  		
  		SVGElementModel model = owner.create(element, twin);
  		SVGElementModel parentModel = owner.convert((SVGElement) owner.getElementGroup().getElement());
  		owner.add(parentModel, model);
  		ICommand command = new GenericAddCommand(this, model);
  		owner.getCommandStore().addCommand(command);
  	}
  }