/**********************************************
    * Copyright (C) 2010 Lukas Laag
    * This file is part of lib-gwt-svg.
    * 
    * libgwtsvg 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.
    * 
   * libgwtsvg 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 libgwtsvg.  If not, see http://www.gnu.org/licenses/
   **********************************************/
  package com.google.gwt.uibinder.elementparsers;
  
  import org.w3c.dom.Element;
  
  import com.google.gwt.core.ext.UnableToCompleteException;
  import com.google.gwt.uibinder.rebind.UiBinderWriter;
  import com.google.gwt.uibinder.rebind.XMLElement;
  import com.google.gwt.uibinder.rebind.XMLElement.Interpreter;
  
  public class SvgInterpreter implements XMLElement.Interpreter<String> {
  	public static SvgInterpreter newInterpreterForUiObject(
  			UiBinderWriter writer, String uiExpression, Element root) {
  		String ancestorExpression = uiExpression;
  		return new SvgInterpreter(writer, ancestorExpression, root,
  				new HtmlMessageInterpreter(writer, ancestorExpression));
  	}
  
  	private final UiBinderWriter writer;
  	private final InterpreterPipe<String> pipe;
  
  	public SvgInterpreter(UiBinderWriter writer, String ancestorExpression, Element root,
  			Interpreter<String> messageInterpreter) {
  		this.writer = writer;
  		this.pipe = new InterpreterPipe<String>();
  
  		pipe.add(new SvgFieldInterpreter(writer, ancestorExpression, root));
  		pipe.add(new ComputedAttributeInterpreter(writer));
  		pipe.add(new AttributeMessageInterpreter(writer));
  		pipe.add(messageInterpreter);
  	}
  
  	public String interpretElement(XMLElement elem)
  			throws UnableToCompleteException {
  		if (writer.isWidgetElement(elem)) {
  			writer.die("Found widget %s in an SVG context", elem);
  		}
  		return pipe.interpretElement(elem);
  	}
  }