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Java > Open Source Codes > org > netbeans > modules > xml > nbprefuse > util > GraphUtilities


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 1997-2007 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 /*
21  * GraphUtilities.java
22  *
23  * Created on July 11, 2006, 12:26 PM
24  *
25  * To change this template, choose Tools | Template Manager
26  * and open the template in the editor.
27  */
28
29 package org.netbeans.modules.xml.nbprefuse.util;
30
31 import java.util.Iterator JavaDoc;
32 import org.netbeans.modules.xml.nbprefuse.AnalysisConstants;
33 import prefuse.Visualization;
34 import prefuse.data.expression.Predicate;
35 import prefuse.data.expression.parser.ExpressionParser;
36 import prefuse.visual.EdgeItem;
37 import prefuse.visual.NodeItem;
38
39 /**
40  *
41  * @author Jeri Lockhart
42  */
43 public abstract class GraphUtilities {
44     
45    
46     /**
47      * Expand or collapse a file node
48      * depending on whehter it is currently expanded or collapsed
49      *
50      *
51      *
52      */
53     public static void expandCollapseFileNode(NodeItem fileNode){
54         if (fileNode == null){
55             return;
56         }
57         Visualization vis = fileNode.getVisualization();
58         boolean isExpanded = fileNode.getBoolean(AnalysisConstants.IS_EXPANDED);
59         fileNode.setBoolean(AnalysisConstants.IS_EXPANDED, !isExpanded);
60         
61         Predicate p = (Predicate)
62         ExpressionParser.parse("["+AnalysisConstants.FILE_GROUP+"] = " + //NOI18N
63 fileNode.getInt(AnalysisConstants.FILE_NODE_FILE_GROUP));
64         vis.setVisible(AnalysisConstants.GRAPH_GROUP, p, !isExpanded);
65         
66         
67         // hide or show the edge from the file node to the query node
68 Iterator JavaDoc outEdges = fileNode.outEdges();
69         while(outEdges.hasNext()){
70             EdgeItem edge = EdgeItem.class.cast(outEdges.next());
71             if (edge.getString(AnalysisConstants.EDGE_TYPE).equals(
72                     AnalysisConstants.FILE_EDGE_TYPE)){
73                 edge.setVisible(isExpanded);
74             }
75         }
76     }
77     
78 }
79
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