Java tutorial
/* * Java Terrain and Stellar System Ports * * Copyright (C) 2006 Martin H. Smith based on work by original * authors. * * Released under the terms of the GNU General Public License * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * * Linking TerraJ statically or dynamically with other modules is making a * combined work based on TerraJ. Thus, the terms and conditions of the * GNU General Public License cover the whole combination. * * In addition, as a special exception, the copyright holders of TerraJ * give you permission to combine this program with free software programs * or libraries that are released under the GNU LGPL and with code included * in the standard release of JOGL, Java Getopt and FreeMarker under the BSD * license (or modified versions of such code, with unchanged license) and with * Apache Commons and Log4J libraries under the Apache license (or modified versions * of such code. You may copy and distribute such a system following the terms * of the GNU GPL for TerraJ and the licenses of the other code concerned, * provided that you include the source code of that other code when and as the * GNU GPL requires distribution of source code. * * Note that people who make modified versions of TerraJ are not obligated to grant * this special exception for their modified versions; it is their choice whether * to do so. The GNU General Public License gives permission to release a modified * version without this exception; this exception also makes it possible to release * a modified version which carries forward this exception. */ /* * The Original Code is Rhino JavaScript Debugger code, released * November 21, 2000. * * The Initial Developer of the Original Code is See Beyond Corporation. * * Portions created by See Beyond are * Copyright (C) 2000 See Beyond Communications Corporation. All * Rights Reserved. * * Contributor(s): * Christopher Oliver * * Alternatively, the contents of this file may be used under the * terms of the GNU Public License (the "GPL"), in which case the * provisions of the GPL are applicable instead of those above. * If you wish to allow use of your version of this file only * under the terms of the GPL and not to allow others to use your * version of this file under the NPL, indicate your decision by * deleting the provisions above and replace them with the notice * and other provisions required by the GPL. If you do not delete * the provisions above, a recipient may use your version of this * file under either the NPL or the GPL. * * NOTE: THIS IS A MODIFIED VERSION FOR USE WITH THIS PROGRAM UNDER THE * GPL */ package com.alvermont.javascript.tools.shell; import java.io.*; import java.awt.event.*; import javax.swing.*; import org.mozilla.javascript.tools.shell.*; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class ShellJSConsole extends JFrame implements ActionListener { /** Our logger object */ private static Log log = LogFactory.getLog(ShellJSConsole.class); // RequireThis OFF: log private Thread shellThread; private String[] args; static final long serialVersionUID = 2551225560631876300L; private File cwd; private JFileChooser dlg; private ShellConsoleTextArea consoleTextArea; public String chooseFile() { if (this.cwd == null) { final String dir = System.getProperty("user.dir"); if (dir != null) { this.cwd = new File(dir); } } if (this.cwd != null) { this.dlg.setCurrentDirectory(this.cwd); } this.dlg.setDialogTitle("Select a file to load"); final int returnVal = this.dlg.showOpenDialog(this); if (returnVal == JFileChooser.APPROVE_OPTION) { final String result = this.dlg.getSelectedFile().getPath(); this.cwd = new File(this.dlg.getSelectedFile().getParent()); return result; } return null; } private class ShellRunnable implements Runnable { private String[] args; public ShellRunnable(String[] args) { this.args = args; } public void run() { ShellMain.exec(this.args); } } public static void main(String[] args) { final ShellJSConsole console = new ShellJSConsole(args); } /** * Start the shell execution thread */ public void startShell() { this.shellThread = new Thread(new ShellRunnable(this.args), "JSShellExecutionThread"); this.shellThread.setDaemon(true); this.shellThread.start(); } /** * Interrupt the shell execution thread * * Note I don't think this will work because the thread is blocked * in readLine() and can't be interrupted. This method is here in case * it ever gets switched over to nio using interruptible channels */ public void stopShell() { this.shellThread.interrupt(); } public void createFileChooser() { this.dlg = new JFileChooser(); javax.swing.filechooser.FileFilter filter = new javax.swing.filechooser.FileFilter() { public boolean accept(File f) { boolean accepted = false; if (f.isDirectory()) { accepted = true; } else { final String name = f.getName(); if (name.toLowerCase().endsWith(".js")) { accepted = true; } } return accepted; } public String getDescription() { return "JavaScript Files (*.js)"; } }; this.dlg.addChoosableFileFilter(filter); } public ShellJSConsole(String[] args) { super("Rhino JavaScript Console"); final JMenuBar menubar = new JMenuBar(); createFileChooser(); final String[] fileItems = { "Load...", "Close" }; final String[] fileCmds = { "Load", "Close" }; final char[] fileShortCuts = { 'L', 'X' }; final String[] editItems = { "Cut", "Copy", "Paste" }; final char[] editShortCuts = { 'T', 'C', 'P' }; final JMenu fileMenu = new JMenu("File"); fileMenu.setMnemonic('F'); final JMenu editMenu = new JMenu("Edit"); editMenu.setMnemonic('E'); for (int i = 0; i < fileItems.length; ++i) { final JMenuItem item = new JMenuItem(fileItems[i], fileShortCuts[i]); item.setActionCommand(fileCmds[i]); item.addActionListener(this); fileMenu.add(item); } for (int i = 0; i < editItems.length; ++i) { final JMenuItem item = new JMenuItem(editItems[i], editShortCuts[i]); item.addActionListener(this); editMenu.add(item); } final ButtonGroup group = new ButtonGroup(); menubar.add(fileMenu); menubar.add(editMenu); setJMenuBar(menubar); this.consoleTextArea = new ShellConsoleTextArea(args); final JScrollPane scroller = new JScrollPane(this.consoleTextArea); setContentPane(scroller); this.consoleTextArea.setRows(24); this.consoleTextArea.setColumns(80); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { setVisible(false); } }); pack(); setVisible(true); // System.setIn(consoleTextArea.getIn()); // System.setOut(consoleTextArea.getOut()); // System.setErr(consoleTextArea.getErr()); ShellMain.setIn(this.consoleTextArea.getIn()); ShellMain.setOut(this.consoleTextArea.getOut()); ShellMain.setErr(this.consoleTextArea.getErr()); // we don't do this here as we want to separate construction from // the run thread this.args = args; //ShellMain.exec(args); } public void actionPerformed(ActionEvent e) { final String cmd = e.getActionCommand(); if (cmd.equals("Load")) { String f = chooseFile(); if (f != null) { f = f.replace('\\', '/'); this.consoleTextArea.eval("load(\"" + f + "\");"); } } else if (cmd.equals("Close")) { log.debug("Closing shell"); setVisible(false); } else if (cmd.equals("Cut")) { this.consoleTextArea.cut(); } else if (cmd.equals("Copy")) { this.consoleTextArea.copy(); } else if (cmd.equals("Paste")) { this.consoleTextArea.paste(); } else { // add new commands here log.debug("Unexpected actionPerformed() : " + cmd); } } }