01 package net.sourceforge.pmd.util.viewer.gui;
02
03
04 import java.awt.BorderLayout;
05 import java.awt.Color;
06
07 import javax.swing.BorderFactory;
08 import javax.swing.JPanel;
09 import javax.swing.JScrollPane;
10 import javax.swing.JTextArea;
11 import javax.swing.SwingUtilities;
12 import javax.swing.text.BadLocationException;
13 import javax.swing.text.DefaultHighlighter;
14
15 import net.sourceforge.pmd.lang.ast.Node;
16 import net.sourceforge.pmd.util.viewer.model.ViewerModel;
17 import net.sourceforge.pmd.util.viewer.model.ViewerModelEvent;
18 import net.sourceforge.pmd.util.viewer.model.ViewerModelListener;
19 import net.sourceforge.pmd.util.viewer.util.NLS;
20
21
22 /**
23 * source code panel
24 *
25 * @author Boris Gruschko ( boris at gruschko.org )
26 * @version $Id: SourceCodePanel.java 6305 2008-06-30 06:28:58Z rgustav $
27 */
28
29 public class SourceCodePanel extends JPanel implements ViewerModelListener {
30
31 private ViewerModel model;
32 private JTextArea sourceCodeArea;
33
34 private static final Color HIGHLIGHT_COLOR = new Color(79, 237, 111);
35
36 public SourceCodePanel(ViewerModel model) {
37 this.model = model;
38 init();
39 }
40
41 private void init() {
42 model.addViewerModelListener(this);
43 setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(), NLS.nls("SOURCE.PANEL.TITLE")));
44 setLayout(new BorderLayout());
45 sourceCodeArea = new JTextArea();
46 add(new JScrollPane(sourceCodeArea), BorderLayout.CENTER);
47 }
48
49 /**
50 * retrieves the string representation of the source code
51 *
52 * @return source code's string representation
53 */
54 public String getSourceCode() {
55 return sourceCodeArea.getText();
56 }
57
58 /**
59 * @see ViewerModelListener#viewerModelChanged(ViewerModelEvent)
60 */
61 public void viewerModelChanged(ViewerModelEvent e) {
62 if (e.getReason() == ViewerModelEvent.NODE_SELECTED) {
63 final Node node = (Node) e.getParameter();
64 SwingUtilities.invokeLater(new Runnable() {
65 public void run() {
66 try {
67 sourceCodeArea.getHighlighter().removeAllHighlights();
68 if (node == null) {
69 return;
70 }
71 int startOffset =
72 sourceCodeArea.getLineStartOffset(node.getBeginLine() - 1) +
73 node.getBeginColumn() - 1;
74 int end =
75 sourceCodeArea.getLineStartOffset(node.getEndLine() - 1) +
76 node.getEndColumn();
77 sourceCodeArea.getHighlighter().addHighlight(startOffset, end,
78 new DefaultHighlighter.DefaultHighlightPainter(HIGHLIGHT_COLOR));
79 sourceCodeArea.moveCaretPosition(startOffset);
80 } catch (BadLocationException exc) {
81 throw new IllegalStateException(exc.getMessage());
82 }
83 }
84 });
85 }
86 }
87 }
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