/*
 * Copyright (c) 1998-2005 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source 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 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *   Free SoftwareFoundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Sam
 */

package com.caucho.widget;

import com.caucho.widget.impl.WidgetFactoryImpl;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import java.net.URL;
import java.util.Map;

public class WidgetFactory
{
  private WidgetFactory _impl;
  private boolean _isImpl;

  public WidgetFactory()
  {
    // XXX: some kind of specification for the implementing class
    if (!_isImpl)
      _impl = new WidgetFactoryImpl();
  }

  protected WidgetFactory(boolean isImpl)
  {
    _isImpl = true;
  }

  public WidgetContext createContext(ExternalContext externalContext,
                                     Widget widget)
    throws WidgetException
  {
    if (!_isImpl)
      return _impl.createContext(externalContext, widget);
    else
      throw new UnsupportedOperationException();
  }

  public WidgetContext createContext(ServletContext externalContext,
                                     Widget widget)
    throws ServletException
  {
    if (!_isImpl)
      return _impl.createContext(externalContext, widget);
    else
      throw new UnsupportedOperationException();
  }

  public Widget createFromXml(URL url)
    throws WidgetException
  {
    if (!_isImpl)
      return _impl.createFromXml(url);
    else
      throw new UnsupportedOperationException();

  }

  // XXX: get rid of this, var should be passed to context and render
  public Widget createFromXml(URL url, Map<String, Object> varMap)
    throws WidgetException
  {
    if (!_isImpl)
      return _impl.createFromXml(url, varMap);
    else
      throw new UnsupportedOperationException();
  }

  public Class<? extends Widget> getWidgetClass(String namespaceURI,
                                                String localName)
  {
    if (!_isImpl)
      return _impl.getWidgetClass(namespaceURI, localName);
    else
      throw new UnsupportedOperationException();
  }
}
