/* 
    P/P   *  Method: net.sourceforge.pebble.web.action.ClearMessagesAction__static_init
          */
     1  package net.sourceforge.pebble.web.action;
     2  
     3  import net.sourceforge.pebble.web.security.RequireSecurityToken;
     4  import net.sourceforge.pebble.web.view.View;
     5  import net.sourceforge.pebble.web.view.impl.MessagesView;
     6  import net.sourceforge.pebble.Constants;
     7  import net.sourceforge.pebble.domain.Blog;
     8  
         /* 
    P/P   *  Method: void net.sourceforge.pebble.web.action.ClearMessagesAction()
          */
     9  import javax.servlet.http.HttpServletRequest;
    10  import javax.servlet.http.HttpServletResponse;
    11  import javax.servlet.ServletException;
    12  
    13  /**
    14   * Allows the user to clear all messages for the current blog.
    15   *
    16   * @author    Simon Brown
    17   */
    18  @RequireSecurityToken
    19  public class ClearMessagesAction extends SecureAction {
    20  
    21    /**
    22     * Peforms the processing associated with this action.
    23     *
    24     * @param request  the HttpServletRequest instance
    25     * @param response the HttpServletResponse instance
    26     * @return the name of the next view
    27     */
    28    public View process(HttpServletRequest request, HttpServletResponse response) throws ServletException {
             /* 
    P/P       *  Method: View process(HttpServletRequest, HttpServletResponse)
              * 
              *  Preconditions:
              *    this.model != null
              *    this.model.data != null
              * 
              *  Presumptions:
              *    java.util.HashMap:get(...)@63 != null
              * 
              *  Postconditions:
              *    return_value == &new MessagesView(process#1)
              *    new MessagesView(process#1) num objects == 1
              */
    29      Blog blog = (Blog)getModel().get(Constants.BLOG_KEY);
    30      blog.clearMessages();
    31      getModel().put("messages", blog.getMessages());
    32  
    33      return new MessagesView();
    34    }
    35  
    36    /**
    37     * Gets a list of all roles that are allowed to access this action.
    38     *
    39     * @return  an array of Strings representing role names
    40     * @param request
    41     */
    42    public String[] getRoles(HttpServletRequest request) {
             /* 
    P/P       *  Method: String[] getRoles(HttpServletRequest)
              * 
              *  Presumptions:
              *    init'ed(net.sourceforge.pebble.Constants.BLOG_ADMIN_ROLE)
              *    init'ed(net.sourceforge.pebble.Constants.BLOG_OWNER_ROLE)
              * 
              *  Postconditions:
              *    return_value == &new String[](getRoles#1)
              *    new String[](getRoles#1) num objects == 1
              *    return_value.length == 2
              *    return_value[0] == net.sourceforge.pebble.Constants.BLOG_ADMIN_ROLE
              *    (soft) init'ed(return_value[0])
              *    return_value[1] == net.sourceforge.pebble.Constants.BLOG_OWNER_ROLE
              *    (soft) init'ed(return_value[1])
              */
    43      return new String[]{Constants.BLOG_ADMIN_ROLE, Constants.BLOG_OWNER_ROLE};
    44    }
    45  
    46  }