HLFactory


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.
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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]"
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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.editor.impl.highlighting;
21  
22  import java.util.ArrayList  ;
23  import javax.swing.text.Document  ;
24  import javax.swing.text.JTextComponent  ;
25  import org.netbeans.api.lexer.TokenHierarchy;
26  import org.netbeans.modules.editor.lib2.highlighting.CaretBasedBlockHighlighting.CaretRowHighlighting;
27  import org.netbeans.spi.editor.highlighting.HighlightsLayer;
28  import org.netbeans.spi.editor.highlighting.HighlightsLayerFactory;
29  import org.netbeans.spi.editor.highlighting.ZOrder;
30  
31  /**
32   *
33   * @author Vita Stejskal
34   */
35  public final class HLFactory implements HighlightsLayerFactory {
36      
37      /** Creates a new instance of HLFactory */
38      public HLFactory() {
39      }
40  
41      public HighlightsLayer[] createLayers(HighlightsLayerFactory.Context context) {
42          ArrayList  <HighlightsLayer> layers = new ArrayList  <HighlightsLayer>();
43          
44          final Document   d = context.getDocument();
45          final JTextComponent   c = context.getComponent();
46          final String   mimeType = getMimeType(c, d);
47          
48          layers.add(HighlightsLayer.create(
49              GuardedBlocksHighlighting.LAYER_TYPE_ID, 
50              ZOrder.BOTTOM_RACK.belowLayers(CaretRowHighlighting.LAYER_TYPE_ID), 
51              true,  // fixedSize
52              new GuardedBlocksHighlighting(d, mimeType)
53          ));
54          
55          if (TokenHierarchy.get(context.getDocument()) == null) {
56              // There is no lexer yet, we will use this layer for backwards compatibility
57              layers.add(HighlightsLayer.create(
58                  NonLexerSyntaxHighlighting.LAYER_TYPE_ID, 
59                  ZOrder.SYNTAX_RACK, 
60                  true,  // fixedSize
61                  new NonLexerSyntaxHighlighting(d, mimeType)
62              ));
63          }
64          
65          return layers.toArray(new HighlightsLayer[layers.size()]);
66      }
67      
68      private static String   getMimeType(JTextComponent   c, Document   d) {
69          String   mimeType = (String  ) d.getProperty("mimeType"); //NOI18N
70          
71          if (mimeType == null) {
72              mimeType = c.getUI().getEditorKit(c).getContentType();
73          }
74          
75          return mimeType == null ? "" : mimeType; //NOI18N
76      }
77  }
78
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