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Java > Open Source Codes > org > netbeans > modules > editor > impl > highlighting > 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.
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.editor.impl.highlighting;
21
22 import java.util.ArrayList JavaDoc;
23 import javax.swing.text.Document JavaDoc;
24 import javax.swing.text.JTextComponent JavaDoc;
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 JavaDoc<HighlightsLayer> layers = new ArrayList JavaDoc<HighlightsLayer>();
43         
44         final Document JavaDoc d = context.getDocument();
45         final JTextComponent JavaDoc c = context.getComponent();
46         final String JavaDoc 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 JavaDoc getMimeType(JTextComponent JavaDoc c, Document JavaDoc d) {
69         String JavaDoc mimeType = (String JavaDoc) 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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