01 package net.sourceforge.pmd.util.viewer.gui;
02
03 import java.awt.BorderLayout;
04 import java.util.Vector;
05
06 import javax.swing.JList;
07 import javax.swing.JPanel;
08 import javax.swing.JScrollPane;
09 import javax.swing.ListSelectionModel;
10 import javax.swing.event.ListSelectionEvent;
11 import javax.swing.event.ListSelectionListener;
12
13 import net.sourceforge.pmd.lang.ast.Node;
14 import net.sourceforge.pmd.util.viewer.model.ViewerModel;
15 import net.sourceforge.pmd.util.viewer.model.ViewerModelEvent;
16 import net.sourceforge.pmd.util.viewer.model.ViewerModelListener;
17
18 /**
19 * A panel showing XPath expression evaluation results
20 *
21 * @author Boris Gruschko ( boris at gruschko.org )
22 * @version $Id: EvaluationResultsPanel.java 6277 2008-06-25 02:20:18Z rgustav $
23 */
24 public class EvaluationResultsPanel extends JPanel implements ViewerModelListener {
25 private ViewerModel model;
26 private JList list;
27
28 /**
29 * constructs the panel
30 *
31 * @param model model to refer to
32 */
33 public EvaluationResultsPanel(ViewerModel model) {
34 super(new BorderLayout());
35
36 this.model = model;
37
38 init();
39 }
40
41 private void init() {
42 model.addViewerModelListener(this);
43
44 list = new JList();
45 list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
46
47 list.addListSelectionListener(new ListSelectionListener() {
48 public void valueChanged(ListSelectionEvent e) {
49 if (list.getSelectedValue() != null) {
50 model.selectNode((Node) list.getSelectedValue(), EvaluationResultsPanel.this);
51 }
52 }
53 });
54
55 add(new JScrollPane(list), BorderLayout.CENTER);
56 }
57
58 /**
59 * @see ViewerModelListener#viewerModelChanged(ViewerModelEvent)
60 */
61 @SuppressWarnings("PMD.UseArrayListInsteadOfVector")
62 public void viewerModelChanged(ViewerModelEvent e) {
63 switch (e.getReason()) {
64 case ViewerModelEvent.PATH_EXPRESSION_EVALUATED:
65
66 if (e.getSource() != this) {
67 list.setListData(new Vector(model.getLastEvaluationResults()));
68 }
69
70 break;
71
72 case ViewerModelEvent.CODE_RECOMPILED:
73 list.setListData(new Vector(0));
74
75 break;
76 default:
77 // Do nothing
78 break;
79 }
80 }
81 }
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