Window


1   /* Window Copyright (C) 1999-2002 Jochen Hoenicke.
2    *
3    * This program is free software; you can redistribute it and/or modify
4    * it under the terms of the GNU Lesser General Public License as published by
5    * the Free Software Foundation; either version 2, or (at your option)
6    * any later version.
7    *
8    * This program is distributed in the hope that it will be useful,
9    * but WITHOUT ANY WARRANTY; without even the implied warranty of
10   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11   * GNU General Public License for more details.
12   *
13   * You should have received a copy of the GNU Lesser General Public License
14   * along with this program; see the file COPYING.LESSER.  If not, write to
15   * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
16   *
17   * $Id: Window.java,v 4.3.2.1 2002/05/28 17:34:03 hoenicke Exp $
18   */
19  
20  package jode.decompiler;
21  import java.applet.*;
22  import java.awt.*;
23  ///#ifndef AWT10
24  import java.awt.event.*;
25  ///#endif
26  import java.io.*;
27  import jode.GlobalOptions;
28  
29  public class Window 
30      implements Runnable  
31  ///#ifndef AWT10
32      , ActionListener
33  ///#endif
34  
35  {
36      TextField classpathField, classField;
37      TextArea  sourcecodeArea, errorArea;
38      Checkbox  verboseCheck, prettyCheck;
39      Button startButton, saveButton;
40      String   lastClassName, lastClassPath;
41      Frame frame;
42  
43      PrintWriter errStream;
44      Decompiler decompiler = new Decompiler();
45      Thread   decompileThread;
46      
47      public Window(Container window) {
48      buildComponents(window);
49      }
50  
51      private void buildComponents(Container window) {
52      if (window instanceof Frame)
53          frame = (Frame) window;
54  
55      window.setFont(new Font("dialog", Font.PLAIN, 10));
56  
57      classpathField = new TextField(50);
58      classField = new TextField(50);
59      sourcecodeArea = new TextArea(20, 80);
60      errorArea = new TextArea(3, 80);
61      verboseCheck = new Checkbox("verbose", true);
62      prettyCheck = new Checkbox("pretty", true);
63      startButton = new Button("start");
64      saveButton = new Button("save");
65  ///#ifdef AWT10
66  /// saveButton.disable();
67  ///#else
68      saveButton.setEnabled(false);
69  ///#endif
70  
71      sourcecodeArea.setEditable(false);
72      errorArea.setEditable(false);
73      Font monospaced = new Font("monospaced", Font.PLAIN, 10);
74      sourcecodeArea.setFont(monospaced);
75      errorArea.setFont(monospaced);
76  
77      GridBagLayout gbl = new GridBagLayout();
78      window.setLayout(gbl);
79      GridBagConstraints labelConstr = new GridBagConstraints();
80      GridBagConstraints textConstr = new GridBagConstraints();
81      GridBagConstraints areaConstr = new GridBagConstraints();
82      GridBagConstraints checkConstr = new GridBagConstraints();
83      GridBagConstraints buttonConstr = new GridBagConstraints();
84      labelConstr.fill = GridBagConstraints.NONE;
85      textConstr.fill = GridBagConstraints.HORIZONTAL;
86      areaConstr.fill = GridBagConstraints.BOTH;
87      checkConstr.fill = GridBagConstraints.NONE;
88      buttonConstr.fill = GridBagConstraints.NONE;
89      labelConstr.anchor = GridBagConstraints.EAST;
90      textConstr.anchor = GridBagConstraints.CENTER;
91      checkConstr.anchor = GridBagConstraints.WEST;
92      buttonConstr.anchor = GridBagConstraints.CENTER;
93      labelConstr.anchor = GridBagConstraints.EAST;
94      textConstr.gridwidth = GridBagConstraints.REMAINDER;
95      textConstr.weightx = 1.0;
96      areaConstr.gridwidth = GridBagConstraints.REMAINDER;
97      areaConstr.weightx = 1.0;
98      areaConstr.weighty = 1.0;
99  
100 ///#ifdef AWT10
101 /// Label label = new Label("class path: ");
102 /// gbl.setConstraints(label, labelConstr);
103 /// window.add(label);
104 /// gbl.setConstraints(classpathField, textConstr);
105 /// window.add(classpathField);
106 /// label = new Label("class name: ");
107 /// gbl.setConstraints(label, labelConstr);
108 /// window.add(label);
109 /// gbl.setConstraints(classField, textConstr);
110 /// window.add(classField);
111 /// gbl.setConstraints(verboseCheck, checkConstr);
112 /// window.add(verboseCheck);
113 /// gbl.setConstraints(prettyCheck, checkConstr);
114 /// window.add(prettyCheck);
115 /// labelConstr.weightx = 1.0;
116 /// label = new Label();
117 /// gbl.setConstraints(label, labelConstr);
118 /// window.add(label);
119 /// gbl.setConstraints(startButton, buttonConstr);
120 /// window.add(startButton);
121 /// buttonConstr.gridwidth = GridBagConstraints.REMAINDER;
122 /// gbl.setConstraints(saveButton, buttonConstr);
123 /// window.add(saveButton);
124 /// gbl.setConstraints(sourcecodeArea, areaConstr);
125 /// window.add(sourcecodeArea);
126 /// areaConstr.gridheight = GridBagConstraints.REMAINDER;
127 /// areaConstr.weighty = 0.0;
128 /// gbl.setConstraints(errorArea, areaConstr);
129 /// window.add(errorArea);
130 ///#else
131     window.add(new Label("class path: "), labelConstr);
132     window.add(classpathField, textConstr);
133     window.add(new Label("class name: "), labelConstr);
134     window.add(classField, textConstr);
135     window.add(verboseCheck, checkConstr);
136     window.add(prettyCheck, checkConstr);
137     labelConstr.weightx = 1.0;
138     window.add(new Label(), labelConstr);
139     window.add(startButton, buttonConstr);
140     buttonConstr.gridwidth = GridBagConstraints.REMAINDER;
141     window.add(saveButton, buttonConstr);
142     window.add(sourcecodeArea, areaConstr);
143     areaConstr.gridheight = GridBagConstraints.REMAINDER;
144     areaConstr.weighty = 0.0;
145     window.add(errorArea, areaConstr);
146 
147     startButton.addActionListener(this);
148     saveButton.addActionListener(this);
149 ///#endif
150     errStream = new PrintWriter(new AreaWriter(errorArea));
151     decompiler.setErr(errStream);
152     }
153 
154     public void setClassPath(String   cp) {
155     classpathField.setText(cp);
156     }
157     public void setClass(String   cls) {
158     classField.setText(cls);
159     }
160     
161 ///#ifdef AWT10
162 ///    public synchronized void action(Event e, Object target) {
163 ///#else
164     public synchronized void actionPerformed(ActionEvent e) {
165     Object   target = e.getSource();
166 ///#endif
167     if (target == startButton) {
168 
169 ///#ifdef AWT10
170 ///     startButton.disable();
171 ///#else
172         startButton.setEnabled(false);
173 ///#endif
174         decompileThread = new Thread  (this);
175         sourcecodeArea.setText("Please wait, while decompiling...\n");
176         decompileThread.start();
177     } else if (target == saveButton) {
178         if (frame == null)
179         frame = new Frame(); //XXX
180         FileDialog fd = new FileDialog(frame, 
181                        "Save decompiled code", 
182                        FileDialog.SAVE);
183         fd.setFile(lastClassName.substring
184                (lastClassName.lastIndexOf('.')+1).concat(".java"));
185         fd.show();
186         String   fileName = fd.getFile();
187         if (fileName == null)
188         return;
189         try {
190         File f = new File(new File(fd.getDirectory()), fileName);
191         FileWriter out = new FileWriter(f);
192         out.write(sourcecodeArea.getText());
193         out.close();
194         } catch (IOException ex) {
195         errorArea.setText("");
196         errStream.println("Couldn't write to file " 
197                        + fileName + ": ");
198         ex.printStackTrace(errStream);
199         } catch (SecurityException   ex) {
200         errorArea.setText("");
201         errStream.println("Couldn't write to file " 
202                        + fileName + ": ");
203         ex.printStackTrace(errStream);
204         }
205     }
206     }
207 
208     public class AreaWriter extends Writer {
209     boolean initialized = false;
210     private TextArea area;
211 
212     public AreaWriter(TextArea a) {
213         area = a;
214     }
215 
216     public void write(char[] b, int off, int len) throws IOException {
217         if (!initialized) {
218         area.setText("");
219         initialized = true;
220         }
221 ///#ifdef AWT10
222 ///     area.appendText(new String(b, off, len));
223 ///#else
224         area.append(new String  (b, off, len));
225 ///#endif
226     }
227 
228     public void flush() {
229     }
230 
231     public void close() {
232     }
233     }
234 
235     public void run() {
236     decompiler.setOption("verbose", verboseCheck.getState() ? "1" : "0");
237     decompiler.setOption("pretty", prettyCheck.getState() ? "1" : "0");
238     errorArea.setText("");
239 ///#ifdef AWT10
240 /// saveButton.disable();
241 ///#else
242     saveButton.setEnabled(false);
243 ///#endif
244 
245     lastClassName = classField.getText();
246     String   newClassPath = classpathField.getText();
247     if (!newClassPath.equals(lastClassPath)) {
248         decompiler.setClassPath(newClassPath);
249         lastClassPath = newClassPath;
250     }
251                     
252     try {
253         Writer writer
254         = new BufferedWriter(new AreaWriter(sourcecodeArea), 512);
255         try {
256         decompiler.decompile(lastClassName, writer, null);
257         } catch (IllegalArgumentException   ex) {
258         sourcecodeArea.setText
259             ("`"+lastClassName+"' is not a class name.\n"
260              +"You have to give a full qualified classname "
261              +"with '.' as package delimiter \n"
262              +"and without .class ending.");
263         return;
264         }
265 ///#ifdef AWT10
266 ///     saveButton.enable();
267 ///#else
268         saveButton.setEnabled(true);
269 ///#endif
270     } catch (Throwable   t) {
271         sourcecodeArea.setText("Didn't succeed.\n"
272                    +"Check the below area for more info.");
273         t.printStackTrace();
274     } finally {
275         synchronized(this) {
276         decompileThread = null;
277 ///#ifdef AWT10
278 ///     startButton.enable();
279 ///#else
280         startButton.setEnabled(true);
281 ///#endif
282         }
283     }
284     }
285 
286     public static void main(String   argv[]) {
287     Frame frame = new Frame(GlobalOptions.copyright);
288     Window win = new Window(frame);
289 
290     String   cp = System.getProperty("java.class.path");
291     if (cp != null)
292         win.setClassPath(cp.replace(File.pathSeparatorChar, 
293                     Decompiler.altPathSeparatorChar));
294     String   cls = win.getClass().getName();
295     win.setClass(cls);
296 
297 ///#ifndef AWT10
298     frame.addWindowListener(new WindowAdapter() {
299         public void windowClosing(WindowEvent e) {
300         System.exit(0);
301         }
302     });
303 ///#endif
304     frame.pack();
305     frame.show();
306     }
307 }
308
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