HTMLDomFactoryMethods


1   /*
2    * Enhydra Java Application Server Project
3    * 
4    * The contents of this file are subject to the Enhydra Public License
5    * Version 1.1 (the "License"); you may not use this file except in
6    * compliance with the License. You may obtain a copy of the License on
7    * the Enhydra web site ( http://www.enhydra.org/ ).
8    * 
9    * Software distributed under the License is distributed on an "AS IS"
10   * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See 
11   * the License for the specific terms governing rights and limitations
12   * under the License.
13   * 
14   * The Initial Developer of the Enhydra Application Server is Lutris
15   * Technologies, Inc. The Enhydra Application Server and portions created
16   * by Lutris Technologies, Inc. are Copyright Lutris Technologies, Inc.
17   * All Rights Reserved.
18   * 
19   * Contributor(s):
20   * 
21   * $Id: HTMLDomFactoryMethods.java,v 1.2 2005/01/26 08:29:24 jkjome Exp $
22   */
23  
24  package org.enhydra.xml.xmlc.dom;
25  
26  import java.util.HashSet  ;
27  import java.util.StringTokenizer  ;
28  
29  import org.w3c.dom.Element  ;
30  
31  /**
32   * Support for implementing DOM factories for HTML.  Since a HTML
33   * DOM factory normally extends the XML DOM factory, there isn't
34   * a base class for HTML support.
35   */
36  public final class HTMLDomFactoryMethods {
37      /**
38       * HTML URL attributes.
39       */
40      private static String  [] URL_ATTRIBUTES = {
41          "action", "archive", "background", "cite", "classid", "codebase",
42          "data", "href", "longdesc", "onblur", "onchange", "onclick",
43          "ondblclick", "onfocus", "onkeydown", "onkeypress", "onkeyup",
44          "onload", "onmousedown", "onmousemove", "onmouseout", "onmouseover",
45          "onmouseup","onreset", "onselect", "onsubmit", "onunload", "profile",
46          "src", "usemap"
47      };
48  
49      /**
50       * HashSet built from URL_ATTRIBUTES.
51       */
52      private static final HashSet   urlAttributes;
53  
54      /**
55       * Class initializer.
56       */
57      static {
58          urlAttributes = new HashSet  (URL_ATTRIBUTES.length);
59          for (int idx = 0; idx < URL_ATTRIBUTES.length; idx++) {
60              urlAttributes.add(URL_ATTRIBUTES[idx]);
61          }
62      }
63          
64      /**
65       * @see XMLCDomFactory#getBaseClassName
66       */
67      public static final String   getBaseClassName() {
68          return "org.enhydra.xml.xmlc.html.HTMLObjectImpl";
69      }
70  
71      /**
72       * @see XMLCDomFactory#getInterfaceNames
73       */
74      public static final String  [] getInterfaceNames() {
75          return new String  [] {"org.enhydra.xml.xmlc.html.HTMLObject"};
76      }
77  
78      /**
79       * @see XMLCDomFactory#getElementClassNames
80       */
81      public static final String  [] getElementClassNames(Element   element) {
82          //FIXME: This code would be real useful in XMLCUtil or HTMLObject.
83          String   classNames = element.getAttribute("class");
84          if ((classNames == null) || (classNames.length() ==0)) {
85              return null;
86          } else {
87              // Parse the class name.
88              StringTokenizer   tokens = new StringTokenizer  (classNames);
89              String  [] names = new String  [tokens.countTokens()];
90              for (int idx = 0; idx < names.length; idx++) {
91                  names[idx] = tokens.nextToken();
92              }
93              return names;
94          }
95      }
96  
97  
98      /**
99       * @see XMLCDomFactory#isURLAttribute
100      */
101     public static final boolean isURLAttribute(Element   element,
102                                                String   attrName) {
103         return urlAttributes.contains(attrName);
104     }
105 }
106
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