CategorizedChildrenExtension


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    * 
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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 1997-2007 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  package org.netbeans.modules.xml.schema.ui.nodes.categorized;
21  
22  import java.util.Collections  ;
23  import java.util.LinkedList  ;
24  import java.util.List  ;
25  import org.netbeans.modules.xml.schema.model.Schema;
26  import org.netbeans.modules.xml.schema.model.SchemaComponent;
27  import org.netbeans.modules.xml.schema.model.visitor.DefaultSchemaVisitor;
28  import org.netbeans.modules.xml.schema.ui.nodes.SchemaUIContext;
29  import org.openide.nodes.Node;
30  
31  /**
32   * This class provides the ability to add node extensions to children based on
33   * the underlying schema component type.
34   * @author Chris Webster
35   */
36  public class CategorizedChildrenExtension extends DefaultSchemaVisitor {
37      
38      /**
39       * Determine if an extension is available for a specific SchemaComponent.
40       * @return the array of nodes to be added, will be empty if no extensions are
41       * required.
42       */
43      public List  <Node> getExtension(SchemaComponent component, 
44          SchemaUIContext c)
45      {
46          nodes = Collections.emptyList();
47          context = c;
48          component.accept(this);
49          return nodes;
50      }
51  
52  
53      /**
54       *
55       *
56       */
57      @Override  
58      public void visit(Schema s)
59      {
60          if(s==context.getModel().getSchema())
61          {
62              nodes = new LinkedList  <Node>();
63              nodes.add(context.getFactory().createPrimitiveTypesNode());
64          }
65      }
66      
67      private List  <Node> nodes;
68      private SchemaUIContext context;
69  }
70
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