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1
20 package com.puppycrawl.tools.checkstyle.gui;
21
22 import java.awt.BorderLayout  ;
23 import java.awt.Component ;
24 import java.awt.GridLayout ;
25 import java.awt.event.ActionEvent ;
26 import java.awt.event.KeyEvent ;
27 import java.io.File ;
28 import java.io.IOException ;
29 import java.util.TooManyListenersException ;
30
31 import javax.swing.AbstractAction ;
32 import javax.swing.Action ;
33 import javax.swing.JButton ;
34 import javax.swing.JFileChooser ;
35 import javax.swing.JOptionPane ;
36 import javax.swing.JPanel ;
37 import javax.swing.JScrollPane ;
38 import javax.swing.SwingUtilities ;
39 import javax.swing.filechooser.FileFilter ;
40 import javax.swing.JTextArea ;
41
42 import antlr.ANTLRException;
43
44 import com.puppycrawl.tools.checkstyle.TreeWalker;
45 import com.puppycrawl.tools.checkstyle.api.DetailAST;
46 import com.puppycrawl.tools.checkstyle.api.FileContents;
47 import com.puppycrawl.tools.checkstyle.api.Utils;
48
49
56 public class ParseTreeInfoPanel extends JPanel
57 {
58 private JTreeTable mTreeTable;
59 private ParseTreeModel mParseTreeModel;
60 private JTextArea mJTextArea;
61 private File mLastDirectory = null;
62 private File mCurrentFile = null;
63 private final Action reloadAction;
64
65 private static class JavaFileFilter extends FileFilter
66 {
67 public boolean accept(File f)
68 {
69 if (f == null) {
70 return false;
71 }
72 return f.isDirectory() || f.getName().endsWith(".java");
73 }
74
75 public String getDescription()
76 {
77 return "Java Source Code";
78 }
79 }
80
81 private class FileSelectionAction extends AbstractAction
82 {
83 public FileSelectionAction()
84 {
85 super("Select Java File");
86 putValue(Action.MNEMONIC_KEY, new Integer (KeyEvent.VK_S));
87 }
88
89 public void actionPerformed(ActionEvent e)
90 {
91 final JFileChooser fc = new JFileChooser ( mLastDirectory );
92 final FileFilter filter = new JavaFileFilter();
93 fc.setFileFilter(filter);
94 final Component parent =
95 SwingUtilities.getRoot(ParseTreeInfoPanel.this);
96 fc.showDialog(parent, "Open");
97 final File file = fc.getSelectedFile();
98 openFile(file, parent);
99
100 }
101 }
102
103 private class ReloadAction extends AbstractAction
104 {
105 public ReloadAction()
106 {
107 super("Reload Java File");
108 putValue(Action.MNEMONIC_KEY, new Integer (KeyEvent.VK_R));
109 }
110
111 public void actionPerformed(ActionEvent e)
112 {
113 final Component parent =
114 SwingUtilities.getRoot(ParseTreeInfoPanel.this);
115 openFile(mCurrentFile, parent);
116 }
117 }
118
119
120 private class FileDropListener implements FileDrop.Listener
121 {
122 private final JScrollPane mSp;
123
124 public void filesDropped(File [] files)
125 {
126 if ((files != null) && (files.length > 0))
127 {
128 final File file = files[0];
129 openFile(file, mSp);
130 }
131 }
132
133 public FileDropListener(JScrollPane aSp)
134 {
135 mSp = aSp;
136 }
137 }
138
139
140 public void openFile(File aFile, final Component aParent)
141 {
142 if (aFile != null) {
143 try {
144 Main.frame.setTitle("Checkstyle : " + aFile.getName());
145 final DetailAST parseTree = parseFile(aFile.getAbsolutePath());
146 mParseTreeModel.setParseTree(parseTree);
147 mCurrentFile = aFile;
148 mLastDirectory = aFile.getParentFile();
149 reloadAction.setEnabled(true);
150
151 final String [] sourceLines = Utils.getLines(aFile.getAbsolutePath());
152 if (mJTextArea.getText().length() != 0) {
154 mJTextArea.replaceRange("", 0, mJTextArea.getText()
155 .length());
156 }
157
158 for (int i = 0; i < sourceLines.length; i++) {
160 mJTextArea.append(sourceLines[i] + "\n");
161 }
162
163 mJTextArea.moveCaretPosition(0);
165 }
166 catch (final IOException ex) {
167 showErrorDialog(
168 aParent,
169 "Could not open " + aFile + ": " + ex.getMessage());
170 }
171 catch (final ANTLRException ex) {
172 showErrorDialog(
173 aParent,
174 "Could not parse " + aFile + ": " + ex.getMessage());
175 }
176 }
177 }
178
179
186 public static DetailAST parseFile(String aFileName)
187 throws IOException , ANTLRException
188 {
189 final String [] lines = Utils.getLines(aFileName);
190 final FileContents contents = new FileContents(aFileName, lines);
191 return TreeWalker.parse(contents);
192 }
193
194
197 public ParseTreeInfoPanel()
198 {
199 setLayout(new BorderLayout ());
200
201 final DetailAST treeRoot = null;
202 mParseTreeModel = new ParseTreeModel(treeRoot);
203 mTreeTable = new JTreeTable(mParseTreeModel);
204 final JScrollPane sp = new JScrollPane (mTreeTable);
205 this.add(sp, BorderLayout.NORTH);
206
207 final JButton fileSelectionButton =
208 new JButton (new FileSelectionAction());
209
210 reloadAction = new ReloadAction();
211 reloadAction.setEnabled(false);
212 final JButton reloadButton = new JButton (reloadAction);
213
214 mJTextArea = new JTextArea (20, 15);
215 mJTextArea.setEditable(false);
216
217 final JScrollPane sp2 = new JScrollPane (mJTextArea);
218 this.add(sp2, BorderLayout.CENTER);
219
220 final JPanel p = new JPanel (new GridLayout (1,2));
221 this.add(p, BorderLayout.SOUTH);
222 p.add(fileSelectionButton);
223 p.add(reloadButton);
224
225 try {
226 new FileDrop(sp, new FileDropListener(sp));
229 }
230 catch (final TooManyListenersException ex)
231 {
232 showErrorDialog(null, "Cannot initialize Drag and Drop support");
233 }
234
235 }
236
237 private void showErrorDialog(final Component parent, final String msg)
238 {
239 final Runnable showError = new Runnable ()
240 {
241 public void run()
242 {
243 JOptionPane.showMessageDialog(parent, msg);
244 }
245 };
246 SwingUtilities.invokeLater(showError);
247 }
248
249 }
250 |
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