/*

  * Copyright (c) 2003-2011, Simon Brown

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions are met:

  *

  *   - Redistributions of source code must retain the above copyright

  *     notice, this list of conditions and the following disclaimer.

  *

  *   - Redistributions in binary form must reproduce the above copyright

  *     notice, this list of conditions and the following disclaimer in

  *     the documentation and/or other materials provided with the

  *     distribution.

  *

  *   - Neither the name of Pebble nor the names of its contributors may

  *     be used to endorse or promote products derived from this software

  *     without specific prior written permission.

  *

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

  * POSSIBILITY OF SUCH DAMAGE.

  */

 package net.sourceforge.pebble.web.tagext;

 import net.sourceforge.pebble.Constants;

 import net.sourceforge.pebble.api.decorator.PageDecorator;

 import net.sourceforge.pebble.api.decorator.PageDecoratorContext;

 import net.sourceforge.pebble.api.openid.OpenIdCommentAuthorProvider;

 import net.sourceforge.pebble.domain.AbstractBlog;

 import net.sourceforge.pebble.domain.Blog;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.jsp.JspException;

 import javax.servlet.jsp.tagext.TagSupport;

 import java.io.IOException;

 /**

  * Renders the renderable plugins for a blog

  *

  * @author James Roper

  */

 public class PluginRendererTag extends TagSupport {

   private static final String PAGE_DECORATOR_HEAD = "head";

   private static final String PAGE_DECORATOR_HEADER = "header";

   private static final String PAGE_DECORATOR_FOOTER = "footer";

   private static final String OPEN_ID_COMMENT_AUTHOR_PROVIDER = "openidcommentauthorprovider";

   /** The plugin point to render */

   private String plugin;

   @Override

   public int doStartTag() throws JspException {

     HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();

     AbstractBlog abstractBlog = (AbstractBlog) request.getAttribute(Constants.BLOG_KEY);

     try {

       if (abstractBlog instanceof Blog) {

         PageDecoratorContext context = new PageDecoratorContext(request);

         Blog blog = (Blog) abstractBlog;

         if (PAGE_DECORATOR_HEAD.equals(plugin)) {

           for (PageDecorator decorator : blog.getPageDecorators()) {

             decorator.decorateHead(pageContext.getOut(), context);

           }

         } else if (PAGE_DECORATOR_HEADER.equals(plugin)) {

           for (PageDecorator decorator : blog.getPageDecorators()) {

             decorator.decorateHeader(pageContext.getOut(), context);

           }

         } else if (PAGE_DECORATOR_FOOTER.equals(plugin)) {

           for (PageDecorator decorator : blog.getPageDecorators()) {

             decorator.decorateFooter(pageContext.getOut(), context);

           }

         }

         if (OPEN_ID_COMMENT_AUTHOR_PROVIDER.equals(plugin)) {

           for (OpenIdCommentAuthorProvider provider : blog.getOpenIdCommentAuthorProviders()) {

             provider.renderProvider(pageContext.getOut(), context);

           }

         }

       }

     } catch (IOException ioe) {

       throw new JspException(ioe);

     }

     return SKIP_BODY;

   }

   public void setPlugin(String plugin) {

     this.plugin = plugin;

   }

 }