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Java > Open Source Codes > org > netbeans > modules > j2ee > ddloaders > web > DDGrammarQueryManager


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.modules.j2ee.ddloaders.web;
21 import java.util.Enumeration JavaDoc;
22 import org.w3c.dom.Element JavaDoc;
23 import org.w3c.dom.Node JavaDoc;
24 import org.xml.sax.*;
25 import org.netbeans.modules.xml.api.model.DTDUtil;
26 import org.netbeans.api.xml.services.UserCatalog;
27
28 /** DD Grammar provided code completion for web.xml specified by XML schema.
29  *
30  * @author mk115033
31  */
32 public class DDGrammarQueryManager extends org.netbeans.modules.xml.api.model.GrammarQueryManager
33 {
34     private static final String JavaDoc XMLNS_ATTR="xmlns"; //NOI18N
35 private static final String JavaDoc WEB_APP_TAG="web-app"; //NOI18N
36
37     private static final int WEB_APP_2_4 = 0;
38     private static final int WEB_APP_2_5 = 1;
39     
40     private int version = WEB_APP_2_4;
41     
42     public java.util.Enumeration JavaDoc enabled(org.netbeans.modules.xml.api.model.GrammarEnvironment ctx) {
43         if (ctx.getFileObject() == null) return null;
44         Enumeration JavaDoc en = ctx.getDocumentChildren();
45         while (en.hasMoreElements()) {
46             Node JavaDoc next = (Node JavaDoc) en.nextElement();
47             if (next.getNodeType() == next.DOCUMENT_TYPE_NODE) {
48                 return null; // null for web.xml specified by DTD
49 } else if (next.getNodeType() == next.ELEMENT_NODE) {
50                 Element JavaDoc element = (Element JavaDoc) next;
51                 String JavaDoc tag = element.getTagName();
52                 if (WEB_APP_TAG.equals(tag)) { // NOI18N
53 String JavaDoc xmlns = element.getAttribute(XMLNS_ATTR);
54                     if (xmlns!=null && (DDCatalog.J2EE_NS.equals(xmlns)
55                         || DDCatalog.JAVAEE_NS.equals(xmlns))){
56                             version = (DDCatalog.JAVAEE_NS.equals(xmlns)? WEB_APP_2_5 : WEB_APP_2_4);
57                             return org.openide.util.Enumerations.singleton (next);
58                     }
59                 }
60             }
61         }
62         
63         return null;
64     }
65     
66     public java.beans.FeatureDescriptor JavaDoc getDescriptor() {
67         return new java.beans.FeatureDescriptor JavaDoc();
68     }
69     
70     /** Returns pseudo DTD for code completion
71     */
72     public org.netbeans.modules.xml.api.model.GrammarQuery getGrammar(org.netbeans.modules.xml.api.model.GrammarEnvironment ctx) {
73         UserCatalog catalog = UserCatalog.getDefault();
74         if (catalog != null) {
75             EntityResolver resolver = catalog.getEntityResolver();
76             if (resolver != null) {
77                 try {
78                     //TODO we need the right dtd for 2.5. When there will be, we should switch for the dtd.
79 //String schema = (version == WEB_APP_2_5 ? DDCatalog.WEB_APP_2_5_ID: DDCatalog.WEB_APP_2_4_ID);
80 String JavaDoc schema = DDCatalog.WEB_APP_2_4_ID;
81                     InputSource inputSource = resolver.resolveEntity(schema, "");
82                     if (inputSource!=null) {
83                         return DTDUtil.parseDTD(true, inputSource);
84                     }
85                 } catch(SAXException e) {
86                 } catch(java.io.IOException JavaDoc e) {
87                 }
88             }
89         }
90         return null;
91     }
92     
93 }
94
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