NodeHandler


1   /*
2    * ====================================================================
3    * This software is subject to the terms of the Common Public License
4    * Agreement, available at the following URL:
5    *   http://www.opensource.org/licenses/cpl.html .
6    * Copyright (C) 2003-2004 TONBELLER AG.
7    * All Rights Reserved.
8    * You must accept the terms of that agreement to use this software.
9    * ====================================================================
10   *
11   * 
12   */
13  package com.tonbeller.wcf.form;
14  
15  import javax.servlet.http.HttpSession  ;
16  
17  import org.w3c.dom.Element  ;
18  
19  import com.tonbeller.wcf.controller.RequestContext;
20  
21  /**
22   * Part of a Component that is attached to a DOM Element. A NodeHandler is attached to an element
23   * node at initialization time.
24   * @author av
25   */
26  public interface NodeHandler {
27    
28    /**
29     * initializes the handler
30     * @param context the current request
31     * @param parent the dispatcher of the owner component. NodeHandler may register
32     * RequestListeners with this dispatcher
33     * @param form allows the NodeHandler to send/receive form events (validate/revert)
34     * @param element the element that this handler is responsible for
35     */
36    void initialize(RequestContext context, XmlComponent comp, Element   element) throws Exception  ;
37    void destroy(HttpSession   session) throws Exception  ;
38    
39    /**
40     * renders itself by changing the DOM Element
41     */
42    void render(RequestContext context) throws Exception  ;
43  }
44

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