AntGrammarQueryProvider


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.ant.grammar;
21  
22  import java.beans.FeatureDescriptor  ;
23  import java.util.Enumeration  ;
24  import org.netbeans.modules.xml.api.model.GrammarEnvironment;
25  import org.netbeans.modules.xml.api.model.GrammarQuery;
26  import org.netbeans.modules.xml.api.model.GrammarQueryManager;
27  import org.openide.util.Enumerations;
28  import org.w3c.dom.Node  ;
29  import org.w3c.dom.Element  ;
30  
31  /**
32   * Provides the Ant grammar for any documents whose root elements matches a standard pattern.
33   * See also ant/src/.../resources/mime-resolver.xml.
34   * @author Petr Kuzel, Jesse Glick
35   */
36  public final class AntGrammarQueryProvider extends GrammarQueryManager {
37      
38      public Enumeration   enabled(GrammarEnvironment ctx) {
39          Enumeration   en = ctx.getDocumentChildren();
40          while (en.hasMoreElements()) {
41              Node   next = (Node  ) en.nextElement();
42              if (next.getNodeType() == next.ELEMENT_NODE) {
43                  Element   root = (Element  ) next;                
44                  // XXX should also check for any root <project> in NS "antlib:org.apache.tools.ant"
45                  // (but no NS support in HintContext impl anyway: #38340)
46                  if ("project".equals(root.getNodeName()) && (root.getAttributeNode("default") != null || root.getAttributeNode("basedir") != null)) { // NOI18N
47                      return Enumerations.singleton (next);
48                  }
49              }
50          }
51          return null;
52      }
53      
54      public FeatureDescriptor   getDescriptor() {
55          return new FeatureDescriptor  ();
56      }
57      
58      public GrammarQuery getGrammar(GrammarEnvironment env) {
59          // XXX pick up env.fileObject too
60          return new AntGrammar();
61      }
62      
63  }
64
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