KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > netbeans > modules > web > taglib > TaglibGrammarQueryManager


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.web.taglib;
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 /** Taglib Grammar provided code completion for jsptaglibrary specified by XML schema.
29  *
30  * @author mk115033
31  */
32 public class TaglibGrammarQueryManager 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 TAGLIB_TAG="taglib"; //NOI18N
36
37     public java.util.Enumeration JavaDoc enabled(org.netbeans.modules.xml.api.model.GrammarEnvironment ctx) {
38         if (ctx.getFileObject() == null) return null;
39         Enumeration JavaDoc en = ctx.getDocumentChildren();
40         while (en.hasMoreElements()) {
41             Node JavaDoc next = (Node JavaDoc) en.nextElement();
42             if (next.getNodeType() == next.DOCUMENT_TYPE_NODE) {
43                 return null; // null for taglibs specified by DTD
44 } else if (next.getNodeType() == next.ELEMENT_NODE) {
45                 Element JavaDoc element = (Element JavaDoc) next;
46                 String JavaDoc tag = element.getTagName();
47                 if (TAGLIB_TAG.equals(tag)) { // NOI18N
48 String JavaDoc xmlns = element.getAttribute(XMLNS_ATTR);
49                     if (xmlns!=null && TaglibCatalog.J2EE_NS.equals(xmlns)) //NOI18N
50 return org.openide.util.Enumerations.singleton (next);
51                     }
52                 }
53         }
54         
55         return null;
56     }
57     
58     public java.beans.FeatureDescriptor JavaDoc getDescriptor() {
59         return new java.beans.FeatureDescriptor JavaDoc();
60     }
61     
62     /** Returns pseudo DTD for code completion
63     */
64     public org.netbeans.modules.xml.api.model.GrammarQuery getGrammar(org.netbeans.modules.xml.api.model.GrammarEnvironment ctx) {
65         UserCatalog catalog = UserCatalog.getDefault();
66         if (catalog != null) {
67             EntityResolver resolver = catalog.getEntityResolver();
68             if (resolver != null) {
69                 try {
70                     InputSource inputSource = resolver.resolveEntity(TaglibCatalog.TAGLIB_2_0_ID, null);
71                     if (inputSource!=null) {
72                         return DTDUtil.parseDTD(true, inputSource);
73                     }
74                 } catch(SAXException e) {
75                 } catch(java.io.IOException JavaDoc e) {
76                 }
77             }
78         }
79         return null;
80     }
81     
82 }
83
Popular Tags