content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.aries.samples.blog.web;
  
  import java.io.IOException;
  import java.io.PrintWriter;
  import java.util.List;
  import javax.servlet.RequestDispatcher;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.aries.samples.blog.web.util.HTMLOutput;
  
  public class AddCommentForm extends HttpServlet{
  	private static final long serialVersionUID = 4989805137759774598L;
  	public static final String ERROR_MESSAGES_ID = "commentErrorMessages";
  	public static final String ID = "comment";
  
  
  	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
  			throws ServletException, IOException {
  		PrintWriter out = resp.getWriter();
  		
  		String postId = checkPostId(req.getParameter("postId"));
  
  		// if we have a valid postId, display the add comment page
  		if (postId != null) {
  			HTMLOutput.writeHTMLHeaderPartOne(out, "Add Comment");
  			HTMLOutput.writeDojoUses(out, "dojo.parser", "dijit.dijit",
  					"dijit.Editor", "dijit.form.TextBox");
  
  			out.println("<script type=\"text/javascript\">");
  			out.println("function storeCommentContent() {");
  			out.println("var textBox = dijit.byId('textArea');");
  			out.println("var textArea = dojo.byId('text');");
  			out.println("textArea.value = textBox.getValue();");
  			out.println("}");
  			out.println("</script>");
  
  			HTMLOutput.writeHTMLHeaderPartTwo(out);
  			
  			List<String> errors = null;
  			if (req.getSession() != null)
  				errors = (List<String>) req.getSession().getAttribute(
  						ERROR_MESSAGES_ID);
  
  			if (errors != null) {
  				out.println("\t\t\t<div id=\"errorMessages\">");
  				for (String msg : errors) {
  					out.println("\t\t\t\t<div class=\"errorMessage\">" + msg
  							+ "</div>");
  				}
  
  				out.println("\t\t\t</div>");
  				req.getSession().removeAttribute("commentErrorMessages");
  			}
  
  			out
  					.println("<form name=\"createComment\" method=\"get\" action=\"AddComment\">");
  			out
  					.println("<div class=\"textEntry\"><textarea dojoType=\"dijit.Editor\" id=\"textArea\" name=\"textArea\"></textarea></div>");
  			out
  					.println("<div class=\"textEntry\"><label>Email <input dojoType=\"dijit.form.TextBox\" type=\"text\" name=\"email\" /></label></div>");
  			out
  					.println("<input type=\"hidden\" name=\"text\" id=\"text\" value=\"\"/>");
  			out.print("<input type=\"hidden\" name=\"postId\" value=\"");
  			out.print(postId);
  			out.println("\"/>");
  			out
  					.println("<input class=\"submit\" type=\"submit\" value=\"Submit\" name=\"Submit\" onclick=\"storeCommentContent()\"/>");
  			out.println("</form>");
  
  			HTMLOutput.writeHTMLFooter(out);
  			
  		} else {
  			// otherwise show the blog
  			RequestDispatcher dispatch = getServletContext()
  					.getRequestDispatcher("ViewBlog");
  			dispatch.forward(req, resp);
  		}
  	}
  
  	private String checkPostId(String parameter) {
  		if (parameter != null && parameter.matches("^\\d*$"))
  			return parameter;
  		return null;
  	}
  }
  