/*
 * Copyright 2004-2005 The Apache Software Foundation.
 * 
 * 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 org.apache.taglib.tiles;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;

import org.apache.tiles.DefinitionsFactory;
import org.apache.tiles.DefinitionsFactoryConfig;
import org.apache.tiles.DefinitionsFactoryException;
import org.apache.tiles.TilesUtil;

  /**
   * Init definitions factory.
   */
public class InitDefinitionsTag extends TagSupport implements ComponentConstants {


  private String filename = null;
  private String classname = null;

  /**
   * Default constructor.
   */
  public InitDefinitionsTag() {
    super();
  }

    /**
     * Release all allocated resources.
     */
    public void release() {

        super.release();
        filename = null;
    }

    /**
     * Set file.
     */
  public void setFile(String name){
    this.filename = name;
  }

    /**
     * Set classname.
     */
  public void setClassname(String classname){
    this.classname = classname;
  }

    /**
     * Do start tag.
     */
  public int doStartTag() throws JspException
  {
  DefinitionsFactory factory = TilesUtil.getDefinitionsFactory(pageContext.getRequest(),pageContext.getServletContext());
  if(factory != null )
    return SKIP_BODY;

  DefinitionsFactoryConfig factoryConfig = new DefinitionsFactoryConfig();
  factoryConfig.setFactoryClassname( classname );
  factoryConfig.setDefinitionConfigFiles( filename );

  try
    {
    factory = TilesUtil.createDefinitionsFactory(pageContext.getServletContext(), factoryConfig);
    }
   catch( DefinitionsFactoryException ex )
      {
      ex.printStackTrace();
      throw new JspException( ex.getMessage() + " See console for details" );
      }
  return SKIP_BODY;
  }

    /**
     * Do end tag.
     */
  public int doEndTag() throws JspException {
    return EVAL_PAGE;
  }

}