Source Code Cross Referenced for DrJavaRoot.java in  » IDE » DrJava » edu » rice » cs » drjava » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE » DrJava » edu.rice.cs.drjava 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*BEGIN_COPYRIGHT_BLOCK
002:         *
003:         * Copyright (c) 2001-2007, JavaPLT group at Rice University (javaplt@rice.edu)
004:         * All rights reserved.
005:         * 
006:         * Redistribution and use in source and binary forms, with or without
007:         * modification, are permitted provided that the following conditions are met:
008:         *    * Redistributions of source code must retain the above copyright
009:         *      notice, this list of conditions and the following disclaimer.
010:         *    * Redistributions in binary form must reproduce the above copyright
011:         *      notice, this list of conditions and the following disclaimer in the
012:         *      documentation and/or other materials provided with the distribution.
013:         *    * Neither the names of DrJava, the JavaPLT group, Rice University, nor the
014:         *      names of its contributors may be used to endorse or promote products
015:         *      derived from this software without specific prior written permission.
016:         * 
017:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
018:         * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
019:         * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
020:         * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
021:         * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
022:         * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
023:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
024:         * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
025:         * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
026:         * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
027:         * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
028:         *
029:         * This software is Open Source Initiative approved Open Source Software.
030:         * Open Source Initative Approved is a trademark of the Open Source Initiative.
031:         * 
032:         * This file is part of DrJava.  Download the current version of this project
033:         * from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/
034:         * 
035:         * END_COPYRIGHT_BLOCK*/
036:
037:        package edu.rice.cs.drjava;
038:
039:        import java.io.*;
040:        import java.net.URL;
041:        import java.net.URLClassLoader;
042:        import java.net.MalformedURLException;
043:        import java.util.Arrays;
044:        import java.util.StringTokenizer;
045:        import java.util.jar.JarFile;
046:        import javax.swing.UIManager;
047:        import javax.swing.*;
048:        import java.awt.dnd.*;
049:        import java.awt.datatransfer.*;
050:
051:        import edu.rice.cs.util.FileOpenSelector;
052:        import edu.rice.cs.util.UnexpectedException;
053:        import edu.rice.cs.util.OutputStreamRedirector;
054:        import edu.rice.cs.util.newjvm.ExecJVM;
055:        import edu.rice.cs.util.swing.Utilities;
056:
057:        import edu.rice.cs.drjava.ui.MainFrame;
058:        import edu.rice.cs.drjava.ui.SplashScreen;
059:        import edu.rice.cs.drjava.ui.ClassPathFilter;
060:        import edu.rice.cs.drjava.ui.DrJavaErrorWindow;
061:        import edu.rice.cs.drjava.ui.DrJavaErrorHandler;
062:        import edu.rice.cs.drjava.ui.SimpleInteractionsWindow;
063:        import edu.rice.cs.drjava.model.*;
064:        import edu.rice.cs.drjava.model.compiler.*;
065:        import edu.rice.cs.drjava.platform.PlatformFactory;
066:        import edu.rice.cs.drjava.config.FileConfiguration;
067:        import edu.rice.cs.drjava.config.*;
068:
069:        import static edu.rice.cs.drjava.config.OptionConstants.*;
070:
071:        /** Main class for DrJava.
072:         *  @version $Id: DrJavaRoot.java 4260 2007-10-10 20:28:34Z mgricken $
073:         */
074:        public class DrJavaRoot {
075:
076:            /* Constants for language levels */
077:            public static final int FULL_JAVA = 0;
078:            public static final int ELEMENTARY_LEVEL = 1;
079:            public static final int INTERMEDIATE_LEVEL = 2;
080:            public static final int ADVANCED_LEVEL = 3;
081:            public static final String[] LANGUAGE_LEVEL_EXTENSIONS = new String[] {
082:                    "java", "dj0", "dj1", "dj2" };
083:
084:            /** Class to probe to see if the debugger is available */
085:            public static final String TEST_DEBUGGER_CLASS = "com.sun.jdi.Bootstrap";
086:
087:            private static final PrintStream _consoleOut = System.out;
088:            private static final PrintStream _consoleErr = System.err;
089:
090:            //  /** This field is only used in the instance of this class in the Interpreter JVM. */
091:
092:            private static boolean _attemptingAugmentedClassPath = false;
093:            private static SimpleInteractionsWindow _debugConsole = null;
094:
095:            private static boolean anyLineNumbersSpecified = false;
096:
097:            /** Main frame of this DrJava instance. */
098:            private static MainFrame _mainFrame = null;
099:
100:            /* Config objects can't be public static final, since we have to delay construction until we know the 
101:             * config file's location.  (Might be specified on command line.) Instead, use accessor methods to 
102:             * prevent others from assigning new values. */
103:
104:            public static void main(final String[] args) {
105:                // Platform-specific UI setup.
106:                PlatformFactory.ONLY.beforeUISetup();
107:
108:                //    Utilities.show("DrJavaRoot started with args = " + Arrays.toString(args));
109:                // let DrJava class handle command line arguments
110:                if (!DrJava.handleCommandLineArgs(args)) {
111:                    System.exit(0);
112:                }
113:
114:                final String[] filesToOpen = DrJava.getFilesToOpen();
115:                final int numFiles = filesToOpen.length;
116:
117:                /* files to open held in filesToOpen[0:numFiles-1] which may be an initial segment of filesToOpen */
118:
119:                /* In some unit test cases, creating a MainFrame in the main thread generated index out of bounds exceptions.  It appear that this
120:                 * creation process generates some swing events that are processed by the event thread.  Hence we need to create the MainFrame in
121:                 * the event thread.
122:                 */
123:                //    Utilities.invokeAndWait(new Runnable() {
124:                //      public void run() {
125:                try {
126:                    String configLAFName = DrJava.getConfig().getSetting(
127:                            LOOK_AND_FEEL);
128:                    String currLAFName = UIManager.getLookAndFeel().getClass()
129:                            .getName();
130:                    if (!configLAFName.equals(currLAFName))
131:                        UIManager.setLookAndFeel(configLAFName);
132:
133:                    // The MainFrame *must* be constructed after the compiler setup process has
134:                    // occurred; otherwise, the list of compilers in the UI will be wrong.
135:
136:                    //      Utilities.showDebug("Creating MainFrame");
137:
138:                    _mainFrame = new MainFrame();
139:
140:                    //      Utilities.showDebug("MainFrame created");
141:
142:                    // Make sure all uncaught exceptions are shown in an DrJavaErrorHandler
143:                    DrJavaErrorWindow.setFrame(_mainFrame);
144:                    System.setProperty("sun.awt.exception.handler",
145:                            "edu.rice.cs.drjava.ui.DrJavaErrorHandler");
146:
147:                    // false means "do not jump to the line number that may be specified, just open the file"
148:                    _openCommandLineFiles(_mainFrame, filesToOpen, numFiles,
149:                            false);
150:
151:                    /* This call on invokeLater only runs in the main thread, so we use SwingUtilities rather than Utilities.
152:                     * We use invokeLater here ensure all files have finished loading and added to the fileview before the MainFrame
153:                     * is set visible.  When this was not done, we occasionally encountered a NullPointerException on start up when 
154:                     * specifying a file (ex: java -jar drjava.jar somefile.java)
155:                     */
156:                    SwingUtilities.invokeLater(new Runnable() {
157:                        public void run() {
158:                            _mainFrame.start();
159:                            if (anyLineNumbersSpecified) {
160:                                // this time, we do want to jump to the line number
161:                                _openCommandLineFiles(_mainFrame, filesToOpen,
162:                                        numFiles, true);
163:                            }
164:                        }
165:                    });
166:
167:                    // redirect stdout to DrJava's console
168:                    System.setOut(new PrintStream(new OutputStreamRedirector() {
169:                        public void print(String s) {
170:                            _mainFrame.getModel().systemOutPrint(s);
171:                        }
172:                    }));
173:
174:                    // redirect stderr to DrJava's console
175:                    System.setErr(new PrintStream(new OutputStreamRedirector() {
176:                        public void print(String s) {
177:                            _mainFrame.getModel().systemErrPrint(s);
178:                        }
179:                    }));
180:
181:                    //      Utilities.showDebug("showDebugConsole flag = " + DrJava.getShowDebugConsole());
182:                    // Show debug console if enabled
183:                    if (DrJava.getShowDebugConsole())
184:                        showDrJavaDebugConsole(_mainFrame);
185:                } catch (Throwable t) {
186:                    // Show any errors to the real System.err and in an DrJavaErrorHandler
187:                    _consoleErr.println(t.getClass().getName() + ": "
188:                            + t.getMessage());
189:                    t.printStackTrace(_consoleErr);
190:                    System.out.println("error thrown");
191:                    new DrJavaErrorHandler().handle(t);
192:                }
193:                //      }
194:                //    });
195:            }
196:
197:            /** Handle the list of files specified on the command line.  Feature request #509701.
198:             *  If file exists, open it in DrJava.  Otherwise, ignore it.
199:             *  Is there a better way to handle nonexistent files?  Dialog box, maybe?
200:             */
201:            static void openCommandLineFiles(final MainFrame mf,
202:                    final String[] filesToOpen, boolean jump) {
203:                openCommandLineFiles(mf, filesToOpen, filesToOpen.length, jump);
204:            }
205:
206:            /** Handle the list of files specified on the command line.  Feature request #509701. If the final element in 
207:             * filesToOpen is a pathSeparator, it opens the debug console. If file exists, open it in DrJava.  Otherwise, ignore
208:             * it.  Is there a better way to handle nonexistent files?  Dialog box, maybe?
209:             * Why the wait?
210:             */
211:            static void openCommandLineFiles(final MainFrame mf,
212:                    final String[] filesToOpen, final int len,
213:                    final boolean jump) {
214:                Utilities.invokeAndWait(new Runnable() {
215:                    public void run() {
216:                        _openCommandLineFiles(mf, filesToOpen, len, jump);
217:                    }
218:                });
219:            }
220:
221:            private static void _openCommandLineFiles(final MainFrame mf,
222:                    String[] filesToOpen, int len, boolean jump) {
223:                //    Utilities.showDebug("Files to open: " + Arrays.toString(filesToOpen));
224:                anyLineNumbersSpecified = false;
225:                for (int i = 0; i < len; i++) {
226:                    String currFileName = filesToOpen[i];
227:
228:                    // check if the file contains a line number
229:                    // the line number can be specified at the end of the file name,
230:                    // separated by File.pathSeparator
231:                    int lineNo = -1;
232:                    int pathSepIndex = currFileName
233:                            .indexOf(File.pathSeparatorChar);
234:                    if (pathSepIndex >= 0) {
235:                        try {
236:                            lineNo = new Integer(currFileName
237:                                    .substring(pathSepIndex + 1));
238:                            anyLineNumbersSpecified = true;
239:                        } catch (NumberFormatException nfe) {
240:                            lineNo = -1;
241:                        }
242:                        currFileName = currFileName.substring(0, pathSepIndex);
243:                    }
244:
245:                    boolean isProjectFile = currFileName.endsWith(".pjt");
246:                    final File file = new File(currFileName).getAbsoluteFile();
247:                    FileOpenSelector command = new FileOpenSelector() {
248:                        public File[] getFiles() {
249:                            return new File[] { file };
250:                        }
251:                    };
252:                    try {
253:                        if (isProjectFile) {
254:                            mf.openProject(command);
255:                        } else {
256:                            if (jump && (lineNo >= 0)) {
257:                                // if a line number has been specified, open the file using MainFrame.open,
258:                                // then use invokeLater to run MainFrame._jumpToLine.
259:                                // note: this can only be done after MainFrame.start() has been called.
260:                                mf.open(command);
261:                                final int l = lineNo;
262:                                edu.rice.cs.util.swing.Utilities
263:                                        .invokeLater(new Runnable() {
264:                                            public void run() {
265:                                                mf._jumpToLine(l);
266:                                            }
267:                                        });
268:                            } else {
269:                                // without line number, use the model's openFile.
270:                                mf.getModel().openFile(command);
271:                            }
272:                        }
273:                    }
274:
275:                    catch (FileNotFoundException ex) {
276:                        // TODO: show a dialog? (file not found)
277:                    } catch (SecurityException se) {
278:                        // TODO: show a dialog? (file not found)
279:                    } catch (AlreadyOpenException aoe) {
280:                        // This explicitly does nothing to ignore duplicate files.
281:                    } catch (FileMovedException aoe) {
282:                        // This explicitly does nothing to ignore duplicate files.
283:                    } catch (IOException ex) {
284:                        // TODO: show a dialog? (file not found)
285:                    } catch (Exception ex) {
286:                        throw new UnexpectedException(ex);
287:                    }
288:                }
289:            }
290:
291:            /** Shows a separate interactions window with a reference to DrJava's MainFrame defined as "mainFrame".  
292:             *  Useful for debugging DrJava.
293:             *  @param mf MainFrame to define in the new window
294:             */
295:            public static void showDrJavaDebugConsole(MainFrame mf) {
296:                if (_debugConsole == null) {
297:                    _debugConsole = new SimpleInteractionsWindow(
298:                            "DrJava Debug Console") {
299:                        protected void close() {
300:                            dispose();
301:                            _debugConsole = null;
302:                        }
303:                    };
304:                    _debugConsole.defineConstant("mainFrame", mf);
305:                    _debugConsole.defineConstant("model", mf.getModel());
306:                    _debugConsole.defineConstant("config", DrJava.getConfig());
307:                    _debugConsole.setInterpreterPrivateAccessible(true);
308:                    _debugConsole.setVisible(true);
309:                } else
310:                    _debugConsole.toFront();
311:            }
312:
313:            /** Get the actual System.err stream.
314:             *  @return System.err
315:             */
316:            public static PrintStream consoleErr() {
317:                return _consoleErr;
318:            }
319:
320:            /** Get the actual System.out stream.
321:             * @return System.out
322:             */
323:            public static PrintStream consoleOut() {
324:                return _consoleOut;
325:            }
326:
327:            /** User dragged something into the component. */
328:            public static void dragEnter(DropTargetDragEvent dropTargetDragEvent) {
329:                _mainFrame.dragEnter(dropTargetDragEvent);
330:            }
331:
332:            /** User dropped something on the component. */
333:            public static void drop(DropTargetDropEvent dropTargetDropEvent) {
334:                _mainFrame.drop(dropTargetDropEvent);
335:            }
336:        }
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