WMLDomFactory


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 Original Code is DigitalSesame
15   * Portions created by DigitalSesame are Copyright (C) 1997-2000 DigitalSesame
16   * All Rights Reserved.
17   * 
18   * Contributor(s):
19   * 
20   * $Id: WMLDomFactory.java,v 1.2 2005/01/26 08:28:45 jkjome Exp $
21   */
22  
23  package org.enhydra.wireless.wml;
24  
25  import java.util.HashSet  ;
26  import java.util.StringTokenizer  ;
27  
28  import org.enhydra.apache.xerces.dom.DocumentTypeImpl;
29  import org.enhydra.wireless.wml.dom.WMLDocument;
30  import org.enhydra.wireless.wml.dom.xerces.WMLDOMImplementationImpl;
31  import org.enhydra.xml.xmlc.XMLCError;
32  import org.enhydra.xml.xmlc.dom.XMLCDomFactory;
33  import org.enhydra.xml.xmlc.dom.xerces.XercesDomFactory;
34  import org.w3c.dom.DOMImplementation  ;
35  import org.w3c.dom.Document  ;
36  import org.w3c.dom.DocumentType  ;
37  import org.w3c.dom.Element  ;
38  import org.w3c.dom.Node  ;
39  
40  /**
41   * XMLC DOM factory for creating WML-specified DocumentType and Document
42   * objects.  Specifying this class as the <code>XMLCDomFctory</code> to xmlc
43   * will produce XMLC document class that are <code>WMLDocument</code> classes.
44   * This is specified using:
45   *
46   * <pre>
47   * xmlc&nbsp;-dom-factory&nbsp;org.enhydra.wireless.wml.WMLDomFactory
48   * </pre>
49   */
50  public class WMLDomFactory extends XercesDomFactory {
51      /**
52       * WML URL attributes.
53       */
54      private static String  [] URL_ATTRIBUTES = {
55          "onenterforward", "onenterbackward",
56          "ontimer", "href",
57          "onpick", "src"
58      };
59  
60      /**
61       * HashSet built from URL_ATTRIBUTES.
62       */
63      private static final HashSet   urlAttributes;
64  
65  
66      private static final String   IMPL_CLASS_SUFFIX = "Impl";
67      private static final String   WML_IMPLEMENTATION_DOT = "org.enhydra.wireless.wml.dom.xerces";
68      private static final String   WML_INTERFACE_DOT = "org.enhydra.wireless.wml.dom";
69  
70      /**
71       * Class initializer.
72       */
73      static {
74          urlAttributes = new HashSet  (URL_ATTRIBUTES.length);
75          for (int idx = 0; idx < URL_ATTRIBUTES.length; idx++) {
76              urlAttributes.add(URL_ATTRIBUTES[idx]);
77          }
78      }
79          
80      /**
81       * @see XMLCDomFactory#createDocumentType
82       */
83      public DocumentType   createDocumentType(String   qualifiedName,
84                                             String   publicId, 
85                                             String   systemId,
86                                             String   internalSubset) {
87          DOMImplementation   domImpl = WMLDOMImplementationImpl.getDOMImplementation();
88          DocumentTypeImpl docType = (DocumentTypeImpl)domImpl.createDocumentType(qualifiedName, publicId, systemId);
89          docType.setInternalSubset(internalSubset);
90          return docType;
91      }
92  
93      /**
94       * @see XMLCDomFactory#createDocument
95       */
96      public Document createDocument(String   namespaceURI,
97                                     String   qualifiedName,
98                                     DocumentType   docType) {
99      DOMImplementation   domImpl = WMLDOMImplementationImpl.getDOMImplementation();
100         Document doc = domImpl.createDocument(namespaceURI, qualifiedName,
101                                                docType);
102         return doc;
103     }
104 
105     /**
106      * @see XMLCDomFactory#getMIMEType
107      */
108     public String   getMIMEType() {
109         return "text/vnd.wap.wml";
110     }
111 
112     /**
113      * @see XMLCDomFactory#getInterfaceNames
114      */
115     public String  [] getInterfaceNames() {
116         return new String  [] {WMLDocument.class.getName()};
117     }
118 
119     /**
120      * @see XMLCDomFactory#nodeClassToInterface
121      */
122     public String   nodeClassToInterface(Node   node) {
123     String   ret = null;
124 
125         String   className = node.getClass().getName();
126     if (className.startsWith(WML_IMPLEMENTATION_DOT)) {
127         int suffixIdx = className.lastIndexOf(IMPL_CLASS_SUFFIX);
128         if (suffixIdx < 0) {
129         throw new XMLCError("Class \"" + className
130                     + "\" does not have suffix \"" + IMPL_CLASS_SUFFIX
131                     + "\" (maybe be mismatch between XMLC code DOM implementation)");
132         }
133         ret = WML_INTERFACE_DOT + 
134         className.substring(WML_IMPLEMENTATION_DOT.length(), suffixIdx);
135     } else 
136         ret = super.nodeClassToInterface(node);
137     return ret;
138     }
139 
140     /**
141      * @see XMLCDomFactory#getElementClassNames
142      */
143     public String  [] getElementClassNames(Element   elem) {
144     String   classNames = elem.getAttribute("class");
145         if ((classNames == null) || (classNames.length() ==0)) {
146             return null;
147         }
148 
149         // Parse the class name.
150         StringTokenizer   tokens = new StringTokenizer  (classNames);
151         String  [] names = new String  [tokens.countTokens()];
152         for (int idx = 0; idx < names.length; idx++) {
153             names[idx] = tokens.nextToken();
154         }
155         return names;
156     }
157 
158     /**
159      * @see XMLCDomFactory#isURLAttribute
160      */
161     public boolean isURLAttribute(Element   element,
162                                   String   attrName) {
163         return urlAttributes.contains(attrName);
164     }
165 }
166
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