darwin-x86/sample/scripting/scriptpad/src/resources/scriptpad.js - platform/prebuilts/jdk/jdk8 - Git at Google

 /*
  * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  *   - Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  *
  *   - Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  *   - Neither the name of Oracle nor the names of its
  *     contributors may be used to endorse or promote products derived
  *     from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 /*
  * This source code is provided to illustrate the usage of a given feature
  * or technique and has been deliberately simplified. Additional steps
  * required for a production-quality application, such as security checks,
  * input validation and proper error handling, might not be present in
  * this sample code.
  */

 /*
  * This script creates a simple Notepad-like interface, which
  * serves as a simple script editor, runner.
  *
  * File dependency:
  *
  *    gui.js -> for basic GUI functions
  */

 /*
  * globalThis is used for actionHelpGlobals() and showFrame().
  */
 var globalThis = this;

 /*
  * JavaImporter helps in avoiding pollution of JavaScript
  * global namespace. We can import multiple Java packages
  * with this and use the JavaImporter object with "with"
  * statement.
  */
 var guiPkgs = new JavaImporter(java.awt, java.awt.event,
                                javax.swing, javax.swing.undo,
                                javax.swing.event, javax.swing.text);

 // main entry point of the scriptpad application
 var main = function() {
     function createEditor() {
         var c = new guiPkgs.JTextArea();
         c.setDragEnabled(true);
         c.setFont(new guiPkgs.Font("monospaced", guiPkgs.Font.PLAIN, 12));
         return c;
     }

     /*const*/ var titleSuffix = "- Scriptpad";
     /*const*/ var defaultTitle = "Untitled" + titleSuffix;

     // Scriptpad's main frame
     var frame;
     // Scriptpad's main editor
     var editor;

     // To track the current file name
     var curFileName = null;

     // To track whether the current document
     // has been modified or not
     var docChanged = false;

     // check and alert user for unsaved
     // but modified document
     function checkDocChanged() {
         if (docChanged) {
             // ignore zero-content untitled document
             if (curFileName == null &&
                 editor.document.length == 0) {
                 return;
             }

             if (confirm("Do you want to save the changes?",
                         "The document has changed")) {
                 actionSave();
             }
         }
     }

     // set a document listener to track
     // whether that is modified or not
     function setDocListener() {
         var doc = editor.getDocument();
         docChanged = false;
         doc.addDocumentListener( new guiPkgs.DocumentListener() {
                                      equals: function(o) {
                                          return this === o; },
                                      toString: function() {
                                          return "doc listener"; },
                                      changeUpdate: function() {
                                          docChanged = true; },
                                      insertUpdate: function() {
                                          docChanged = true; },
                                      removeUpdate: function() {
                                          docChanged = true; }
                                  });
     }

     // menu action functions

     // "File" menu

     // create a "new" document
     function actionNew() {
         checkDocChanged();
         curFileName = null;
         editor.setDocument(new guiPkgs.PlainDocument());
         setDocListener();
         frame.setTitle(defaultTitle);
         editor.revalidate();
     }

     // open an existing file
     function actionOpen() {
         checkDocChanged();
         var f = fileDialog();
         if (f == null) {
             return;
         }

         if (f.isFile() && f.canRead()) {
             frame.setTitle(f.getName() + titleSuffix);
             editor.setDocument(new guiPkgs.PlainDocument());
             var progress = new guiPkgs.JProgressBar();
             progress.setMinimum(0);
             progress.setMaximum(f.length());
             var doc = editor.getDocument();
             var inp = new java.io.FileReader(f);
             var buff = java.lang.reflect.Array.newInstance(
                 java.lang.Character.TYPE, 4096);
             var nch;
             while ((nch = inp.read(buff, 0, buff.length)) != -1) {
                 doc.insertString(doc.getLength(),
                                  new java.lang.String(buff, 0, nch), null);
                 progress.setValue(progress.getValue() + nch);
             }
             inp.close();
             curFileName = f.getAbsolutePath();
             setDocListener();
         } else {
             error("Can not open file: " + f,
                   "Error opening file: " + f);
         }
     }

     // open script from a URL
     function actionOpenURL() {
         checkDocChanged();
         var url = prompt("Address:");
         if (url == null) {
             return;
         }

         try {
             var u = new java.net.URL(url);
             editor.setDocument(new guiPkgs.PlainDocument());
             frame.setTitle(url + titleSuffix);
             var progress = new guiPkgs.JProgressBar();
             progress.setMinimum(0);
             progress.setIndeterminate(true);
             var doc = editor.getDocument();
             var inp = new java.io.InputStreamReader(u.openStream());
             var buff = java.lang.reflect.Array.newInstance(
                 java.lang.Character.TYPE, 4096);
             var nch;
             while ((nch = inp.read(buff, 0, buff.length)) != -1) {
                 doc.insertString(doc.getLength(),
                                  new java.lang.String(buff, 0, nch), null);
                 progress.setValue(progress.getValue() + nch);
             }
             curFileName = null;
             setDocListener();
         } catch (e) {
             error("Error opening URL: " + e,
                   "Can not open URL: " + url);
         }
     }

     // factored out "save" function used by
     // save, save as menu actions
     function save(file) {
         var doc = editor.getDocument();
         frame.setTitle(file.getName() + titleSuffix);
         curFileName = file;
         var progress = new guiPkgs.JProgressBar();
         progress.setMinimum(0);
         progress.setMaximum(file.length());
         var out = new java.io.FileWriter(file);
         var text = new guiPkgs.Segment();
         text.setPartialReturn(true);
         var charsLeft = doc.getLength();
         var offset = 0;
         var min;

         while (charsLeft > 0) {
             doc.getText(offset, Math.min(4096, charsLeft), text);
             out.write(text.array, text.offset, text.count);
             charsLeft -= text.count;
             offset += text.count;
             progress.setValue(offset);
             java.lang.Thread.sleep(10);
         }

         out.flush();
         out.close();
         docChanged = false;
     }

     // file-save as menu
     function actionSaveAs() {
         var ret = fileDialog(null, true);
         if (ret == null) {
             return;
         }
         save(ret);
     }

     // file-save menu
     function actionSave() {
         if (curFileName) {
             save(new java.io.File(curFileName));
         } else {
             actionSaveAs();
         }
     }

     // exit from scriptpad
     function actionExit() {
         checkDocChanged();
         java.lang.System.exit(0);
     }

     // "Edit" menu

     // cut the currently selected text
     function actionCut() {
         editor.cut();
     }

     // copy the currently selected text to clipboard
     function actionCopy() {
         editor.copy();
     }

     // paste clipboard content to document
     function actionPaste() {
         editor.paste();
     }

     // select all the text in editor
     function actionSelectAll() {
         editor.selectAll();
     }

     // "Tools" menu

     // run the current document as JavaScript
     function actionRun() {
         var doc = editor.getDocument();
         var script = doc.getText(0, doc.getLength());
         var oldFile = engine.get(javax.script.ScriptEngine.FILENAME);
         try {
             if (engine == undefined) {
                 var m = new javax.script.ScriptEngineManager();
                 engine = m.getEngineByName("nashorn");
             }
             engine.put(javax.script.ScriptEngine.FILENAME, frame.title);
             engine.eval(script, context);
         } catch (e) {
             error(e, "Script Error");
             e.printStackTrace();
         } finally {
             engine.put(javax.script.ScriptEngine.FILENAME, oldFile);
         }
     }

     // "Examples" menu

     // show given script as new document
     function showScript(title, str) {
         actionNew();
         frame.setTitle("Example - " + title + titleSuffix);
         var doc = editor.document;
         doc.insertString(0, str, null);
     }

     // "hello world"
     function actionHello() {
         showScript(actionEval.title,
                    "alert('Hello, world');");
     }
     actionHello.title = "Hello, World";

     // eval the "hello world"!
     function actionEval() {
         showScript(actionEval.title,
                    "eval(\"alert('Hello, world')\");");
     }
     actionEval.title = "Eval";

     // show how to access Java static methods
     function actionJavaStatic() {
         showScript(arguments.callee.title,
                    "// Just use Java syntax\n" +
                    "var props = java.lang.System.getProperties();\n" +
                    "alert(props.get('os.name'));");
     }
     actionJavaStatic.title = "Java Static Calls";

     // show how to access Java classes, methods
     function actionJavaAccess() {
         showScript(arguments.callee.title,
                    "// just use new JavaClass();\n" +
                    "var fr = new javax.swing.JFrame();\n" +
                    "// call all public methods as in Java\n" +
                    "fr.setTitle('hello');\n" +
                    "fr.setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);\n" +
                    "fr.setSize(200, 200);\n" +
                    "fr.setVisible(true);");
     }
     actionJavaAccess.title = "Java Object Access";

     // show how to use Java bean conventions
     function actionJavaBean() {
         showScript(arguments.callee.title,
                    "var fr = new javax.swing.JFrame();\n" +
                    "fr.setSize(200, 200);\n" +
                    "// access public get/set methods as fields\n" +
                    "fr.defaultCloseOperation = javax.swing.WindowConstants.DISPOSE_ON_CLOSE;\n" +
                    "fr.title = 'hello';\n" +
                    "fr.visible = true;");
     }
     actionJavaBean.title = "Java Beans";

     // show how to implement Java interface
     function actionJavaInterface() {
         showScript(arguments.callee.title,
                    "// use Java anonymizer class-like syntax!\n" +
                    "var r = new java.lang.Runnable() {\n" +
                    "            run: function() {\n" +
                    "                    alert('hello');\n" +
                    "            }\n" +
                    "    };\n" +
                    "// use the above Runnable to create a Thread\n" +
                    "new java.lang.Thread(r).start();\n" +
                    "// For simple one method interfaces, just pass script function\n" +
                    "new java.lang.Thread(function() { alert('world'); }).start();");
     }
     actionJavaInterface.title = "Java Interfaces";

     // show how to import Java classes, packages
     function actionJavaImport() {
         showScript(arguments.callee.title,
                    "// use Java-like import *...\n" +
                    "//    importPackage(java.io);\n" +
                    "// or import a specific class\n" +
                    "//    importClass(java.io.File);\n" +
                    "// or better - import just within a scope!\n" +
                    "var ioPkgs = JavaImporter(java.io);\n" +
                    "with (ioPkgs) { alert(new File('.').absolutePath); }");
     }
     actionJavaImport.title = "Java Import";

     // "Help" menu

     /*
      * Shows a one liner help message for each
      * global function. Note that this function
      * depends on docString meta-data for each
      * function.
      */
     function actionHelpGlobals() {
         var names = new java.util.ArrayList();
         for (var i in globalThis) {
             var func = globalThis[i];
             if (typeof(func) == "function" &&
                 ("docString" in func)) {
                 names.add(i);
             }
         }
         java.util.Collections.sort(names);
         var helpDoc = new java.lang.StringBuffer();
         helpDoc.append("<table border='1'>");
         var itr = names.iterator();
         while (itr.hasNext()) {
             var name = itr.next();
             helpDoc.append("<tr><td>");
             helpDoc.append(name);
             helpDoc.append("</td><td>");
             helpDoc.append(globalThis[name].docString);
             helpDoc.append("</td></tr>");
         }
         helpDoc.append("</table>");

         var helpEditor = new guiPkgs.JEditorPane();
         helpEditor.setContentType("text/html");
         helpEditor.setEditable(false);
         helpEditor.setText(helpDoc.toString());

         var scroller = new guiPkgs.JScrollPane();
         var port = scroller.getViewport();
         port.add(helpEditor);

         var helpFrame = new guiPkgs.JFrame("Help - Global Functions");
         helpFrame.getContentPane().add("Center", scroller);
         helpFrame.setDefaultCloseOperation(guiPkgs.WindowConstants.DISPOSE_ON_CLOSE);
         helpFrame.pack();
         helpFrame.setSize(500, 600);
         helpFrame.setVisible(true);
     }

     // show a simple about message for scriptpad
     function actionAbout() {
         alert("Scriptpad\nVersion 1.1", "Scriptpad");
     }

     /*
      * This data is used to construct menu bar.
      * This way adding a menu is easier. Just add
      * top level menu or add an item to an existing
      * menu. "action" should be a function that is
      * called back on clicking the correponding menu.
      */
     var menuData = [
         {
             menu: "File",
             items: [
                 { name: "New",  action: actionNew , accel: guiPkgs.KeyEvent.VK_N },
                 { name: "Open...", action: actionOpen, accel: guiPkgs.KeyEvent.VK_O },
                 { name: "Open URL...", action: actionOpenURL, accel: guiPkgs.KeyEvent.VK_U },
                 { name: "Save", action: actionSave, accel: guiPkgs.KeyEvent.VK_S },
                 { name: "Save As...", action: actionSaveAs },
                 { name: "-" },
                 { name: "Exit", action: actionExit, accel: guiPkgs.KeyEvent.VK_Q }
             ]
         },

         {
             menu: "Edit",
             items: [
                 { name: "Cut", action: actionCut, accel: guiPkgs.KeyEvent.VK_X },
                 { name: "Copy", action: actionCopy, accel: guiPkgs.KeyEvent.VK_C },
                 { name: "Paste", action: actionPaste, accel: guiPkgs.KeyEvent.VK_V },
                 { name: "-" },
                 { name: "Select All", action: actionSelectAll, accel: guiPkgs.KeyEvent.VK_A }
             ]
         },

         {
             menu: "Tools",
             items: [
                 { name: "Run", action: actionRun, accel: guiPkgs.KeyEvent.VK_R }
             ]
         },

         {
             menu: "Examples",
             items: [
                 { name: actionHello.title, action: actionHello },
                 { name: actionEval.title, action: actionEval },
                 { name: actionJavaStatic.title, action: actionJavaStatic },
                 { name: actionJavaAccess.title, action: actionJavaAccess },
                 { name: actionJavaBean.title, action: actionJavaBean },
                 { name: actionJavaInterface.title, action: actionJavaInterface },
                 { name: actionJavaImport.title, action: actionJavaImport }
             ]
         },

         {
             menu: "Help",
             items: [
                 { name: "Global Functions", action: actionHelpGlobals },
                 { name: "-" },
                 { name: "About Scriptpad", action: actionAbout }
             ]
         }
     ];

     function setMenuAccelerator(mi, accel) {
         var keyStroke = guiPkgs.KeyStroke.getKeyStroke(accel,
                                                        guiPkgs.Toolkit.getDefaultToolkit().getMenuShortcutKeyMask(), false);
         mi.setAccelerator(keyStroke);
     }

     // create a menubar using the above menu data
     function createMenubar() {
         var mb = new guiPkgs.JMenuBar();
         for (var m in menuData) {
             var items = menuData[m].items;
             var menu = new guiPkgs.JMenu(menuData[m].menu);

             for (var i in items) {
                 if (items[i].name.equals("-")) {
                     menu.addSeparator();
                 } else {
                     var mi = new guiPkgs.JMenuItem(items[i].name);
                     var action = items[i].action;
                     mi.addActionListener(action);
                     var accel = items[i].accel;
                     if (accel) {
                         setMenuAccelerator(mi, accel);
                     }
                     menu.add(mi);
                 }
 	        }

 	        mb.add(menu);
         }

         return mb;
     }

     // function to add a new menu item under "Tools" menu
     function addTool(menuItem, action, accel) {
         if (typeof(action) != "function") {
             return;
         }

         var toolsIndex = -1;
         // find the index of the "Tools" menu
         for (var i in menuData) {
             if (menuData[i].menu.equals("Tools")) {
                 toolsIndex = i;
                 break;
             }
         }
         if (toolsIndex == -1) {
             return;
         }
         var toolsMenu = frame.getJMenuBar().getMenu(toolsIndex);
         var mi = new guiPkgs.JMenuItem(menuItem);
         mi.addActionListener(action);
         if (accel) {
             setMenuAccelerator(mi, accel);
         }
         toolsMenu.add(mi);
     }

     // create Scriptpad frame
     function createFrame() {
         frame = new guiPkgs.JFrame();
         frame.setTitle(defaultTitle);
         frame.setBackground(guiPkgs.Color.lightGray);
         frame.getContentPane().setLayout(new guiPkgs.BorderLayout());

         // create notepad panel
         var notepad = new guiPkgs.JPanel();
         notepad.setBorder(guiPkgs.BorderFactory.createEtchedBorder());
         notepad.setLayout(new guiPkgs.BorderLayout());

         // create editor
         editor = createEditor();
         var scroller = new guiPkgs.JScrollPane();
         var port = scroller.getViewport();
         port.add(editor);

         // add editor to notepad panel
         var panel = new guiPkgs.JPanel();
         panel.setLayout(new guiPkgs.BorderLayout());
         panel.add("Center", scroller);
         notepad.add("Center", panel);

         // add notepad panel to frame
         frame.getContentPane().add("Center", notepad);

         // set menu bar to frame and show the frame
         frame.setJMenuBar(createMenubar());
         frame.setDefaultCloseOperation(guiPkgs.JFrame.EXIT_ON_CLOSE);
         frame.pack();
         frame.setSize(500, 600);
     }

     // show Scriptpad frame
     function showFrame() {
         // set global variable by the name "window"
         globalThis.window = frame;

         // open new document
         actionNew();

         frame.setVisible(true);
     }

     // create and show Scriptpad frame
     createFrame();
     showFrame();

     /*
      * Application object has two fields "frame", "editor"
      * which are current JFrame and editor and a method
      * called "addTool" to add new menu item to "Tools" menu.
      */
     return {
         frame: frame,
         editor: editor,
         addTool: addTool
     };
 };

 /*
  * Call the main and store Application object
  * in a global variable named "application".
  */
 var application = main();

 if (this.load == undefined) {
     function load(file) {
         var ioPkgs = new JavaImporter(java.io);
         with (ioPkgs) {
             var stream = new FileInputStream(file);
             var bstream = new BufferedInputStream(stream);
             var reader = new BufferedReader(new InputStreamReader(bstream));
             var oldFilename = engine.get(engine.FILENAME);
             engine.put(engine.FILENAME, file);
             try {
                 engine.eval(reader, context);
             } finally {
                 engine.put(engine.FILENAME, oldFilename);
             }
             stream.close();
         }
     }
     load.docString = "loads the given script file";
 }

 /*
  * Load user specific init file under home dir, if found.
  */
 function loadUserInit() {
     var home = java.lang.System.getProperty("user.home");
     var f = new java.io.File(home, "scriptpad.js");
     if (f.exists()) {
         engine.eval(new java.io.FileReader(f));
     }
 }

 loadUserInit();
	/*
	* Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* - Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	*
	* - Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* - Neither the name of Oracle nor the names of its
	* contributors may be used to endorse or promote products derived
	* from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
	* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	/*
	* This source code is provided to illustrate the usage of a given feature
	* or technique and has been deliberately simplified. Additional steps
	* required for a production-quality application, such as security checks,
	* input validation and proper error handling, might not be present in
	* this sample code.
	*/

	/*
	* This script creates a simple Notepad-like interface, which
	* serves as a simple script editor, runner.
	*
	* File dependency:
	*
	* gui.js -> for basic GUI functions
	*/

	/*
	* globalThis is used for actionHelpGlobals() and showFrame().
	*/
	var globalThis = this;

	/*
	* JavaImporter helps in avoiding pollution of JavaScript
	* global namespace. We can import multiple Java packages
	* with this and use the JavaImporter object with "with"
	* statement.
	*/
	var guiPkgs = new JavaImporter(java.awt, java.awt.event,
	javax.swing, javax.swing.undo,
	javax.swing.event, javax.swing.text);

	// main entry point of the scriptpad application
	var main = function() {
	function createEditor() {
	var c = new guiPkgs.JTextArea();
	c.setDragEnabled(true);
	c.setFont(new guiPkgs.Font("monospaced", guiPkgs.Font.PLAIN, 12));
	return c;
	}

	/const/ var titleSuffix = "- Scriptpad";
	/const/ var defaultTitle = "Untitled" + titleSuffix;

	// Scriptpad's main frame
	var frame;
	// Scriptpad's main editor
	var editor;

	// To track the current file name
	var curFileName = null;

	// To track whether the current document
	// has been modified or not
	var docChanged = false;

	// check and alert user for unsaved
	// but modified document
	function checkDocChanged() {
	if (docChanged) {
	// ignore zero-content untitled document
	if (curFileName == null &&
	editor.document.length == 0) {
	return;
	}

	if (confirm("Do you want to save the changes?",
	"The document has changed")) {
	actionSave();
	}
	}
	}

	// set a document listener to track
	// whether that is modified or not
	function setDocListener() {
	var doc = editor.getDocument();
	docChanged = false;
	doc.addDocumentListener( new guiPkgs.DocumentListener() {
	equals: function(o) {
	return this === o; },
	toString: function() {
	return "doc listener"; },
	changeUpdate: function() {
	docChanged = true; },
	insertUpdate: function() {
	docChanged = true; },
	removeUpdate: function() {
	docChanged = true; }
	});
	}

	// menu action functions

	// "File" menu

	// create a "new" document
	function actionNew() {
	checkDocChanged();
	curFileName = null;
	editor.setDocument(new guiPkgs.PlainDocument());
	setDocListener();
	frame.setTitle(defaultTitle);
	editor.revalidate();
	}

	// open an existing file
	function actionOpen() {
	checkDocChanged();
	var f = fileDialog();
	if (f == null) {
	return;
	}

	if (f.isFile() && f.canRead()) {
	frame.setTitle(f.getName() + titleSuffix);
	editor.setDocument(new guiPkgs.PlainDocument());
	var progress = new guiPkgs.JProgressBar();
	progress.setMinimum(0);
	progress.setMaximum(f.length());
	var doc = editor.getDocument();
	var inp = new java.io.FileReader(f);
	var buff = java.lang.reflect.Array.newInstance(
	java.lang.Character.TYPE, 4096);
	var nch;
	while ((nch = inp.read(buff, 0, buff.length)) != -1) {
	doc.insertString(doc.getLength(),
	new java.lang.String(buff, 0, nch), null);
	progress.setValue(progress.getValue() + nch);
	}
	inp.close();
	curFileName = f.getAbsolutePath();
	setDocListener();
	} else {
	error("Can not open file: " + f,
	"Error opening file: " + f);
	}
	}

	// open script from a URL
	function actionOpenURL() {
	checkDocChanged();
	var url = prompt("Address:");
	if (url == null) {
	return;
	}

	try {
	var u = new java.net.URL(url);
	editor.setDocument(new guiPkgs.PlainDocument());
	frame.setTitle(url + titleSuffix);
	var progress = new guiPkgs.JProgressBar();
	progress.setMinimum(0);
	progress.setIndeterminate(true);
	var doc = editor.getDocument();
	var inp = new java.io.InputStreamReader(u.openStream());
	var buff = java.lang.reflect.Array.newInstance(
	java.lang.Character.TYPE, 4096);
	var nch;
	while ((nch = inp.read(buff, 0, buff.length)) != -1) {
	doc.insertString(doc.getLength(),
	new java.lang.String(buff, 0, nch), null);
	progress.setValue(progress.getValue() + nch);
	}
	curFileName = null;
	setDocListener();
	} catch (e) {
	error("Error opening URL: " + e,
	"Can not open URL: " + url);
	}
	}

	// factored out "save" function used by
	// save, save as menu actions
	function save(file) {
	var doc = editor.getDocument();
	frame.setTitle(file.getName() + titleSuffix);
	curFileName = file;
	var progress = new guiPkgs.JProgressBar();
	progress.setMinimum(0);
	progress.setMaximum(file.length());
	var out = new java.io.FileWriter(file);
	var text = new guiPkgs.Segment();
	text.setPartialReturn(true);
	var charsLeft = doc.getLength();
	var offset = 0;
	var min;

	while (charsLeft > 0) {
	doc.getText(offset, Math.min(4096, charsLeft), text);
	out.write(text.array, text.offset, text.count);
	charsLeft -= text.count;
	offset += text.count;
	progress.setValue(offset);
	java.lang.Thread.sleep(10);
	}

	out.flush();
	out.close();
	docChanged = false;
	}

	// file-save as menu
	function actionSaveAs() {
	var ret = fileDialog(null, true);
	if (ret == null) {
	return;
	}
	save(ret);
	}

	// file-save menu
	function actionSave() {
	if (curFileName) {
	save(new java.io.File(curFileName));
	} else {
	actionSaveAs();
	}
	}

	// exit from scriptpad
	function actionExit() {
	checkDocChanged();
	java.lang.System.exit(0);
	}

	// "Edit" menu

	// cut the currently selected text
	function actionCut() {
	editor.cut();
	}

	// copy the currently selected text to clipboard
	function actionCopy() {
	editor.copy();
	}

	// paste clipboard content to document
	function actionPaste() {
	editor.paste();
	}

	// select all the text in editor
	function actionSelectAll() {
	editor.selectAll();
	}

	// "Tools" menu

	// run the current document as JavaScript
	function actionRun() {
	var doc = editor.getDocument();
	var script = doc.getText(0, doc.getLength());
	var oldFile = engine.get(javax.script.ScriptEngine.FILENAME);
	try {
	if (engine == undefined) {
	var m = new javax.script.ScriptEngineManager();
	engine = m.getEngineByName("nashorn");
	}
	engine.put(javax.script.ScriptEngine.FILENAME, frame.title);
	engine.eval(script, context);
	} catch (e) {
	error(e, "Script Error");
	e.printStackTrace();
	} finally {
	engine.put(javax.script.ScriptEngine.FILENAME, oldFile);
	}
	}

	// "Examples" menu

	// show given script as new document
	function showScript(title, str) {
	actionNew();
	frame.setTitle("Example - " + title + titleSuffix);
	var doc = editor.document;
	doc.insertString(0, str, null);
	}

	// "hello world"
	function actionHello() {
	showScript(actionEval.title,
	"alert('Hello, world');");
	}
	actionHello.title = "Hello, World";

	// eval the "hello world"!
	function actionEval() {
	showScript(actionEval.title,
	"eval(\"alert('Hello, world')\");");
	}
	actionEval.title = "Eval";

	// show how to access Java static methods
	function actionJavaStatic() {
	showScript(arguments.callee.title,
	"// Just use Java syntax\n" +
	"var props = java.lang.System.getProperties();\n" +
	"alert(props.get('os.name'));");
	}
	actionJavaStatic.title = "Java Static Calls";

	// show how to access Java classes, methods
	function actionJavaAccess() {
	showScript(arguments.callee.title,
	"// just use new JavaClass();\n" +
	"var fr = new javax.swing.JFrame();\n" +
	"// call all public methods as in Java\n" +
	"fr.setTitle('hello');\n" +
	"fr.setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);\n" +
	"fr.setSize(200, 200);\n" +
	"fr.setVisible(true);");
	}
	actionJavaAccess.title = "Java Object Access";

	// show how to use Java bean conventions
	function actionJavaBean() {
	showScript(arguments.callee.title,
	"var fr = new javax.swing.JFrame();\n" +
	"fr.setSize(200, 200);\n" +
	"// access public get/set methods as fields\n" +
	"fr.defaultCloseOperation = javax.swing.WindowConstants.DISPOSE_ON_CLOSE;\n" +
	"fr.title = 'hello';\n" +
	"fr.visible = true;");
	}
	actionJavaBean.title = "Java Beans";

	// show how to implement Java interface
	function actionJavaInterface() {
	showScript(arguments.callee.title,
	"// use Java anonymizer class-like syntax!\n" +
	"var r = new java.lang.Runnable() {\n" +
	" run: function() {\n" +
	" alert('hello');\n" +
	" }\n" +
	" };\n" +
	"// use the above Runnable to create a Thread\n" +
	"new java.lang.Thread(r).start();\n" +
	"// For simple one method interfaces, just pass script function\n" +
	"new java.lang.Thread(function() { alert('world'); }).start();");
	}
	actionJavaInterface.title = "Java Interfaces";

	// show how to import Java classes, packages
	function actionJavaImport() {
	showScript(arguments.callee.title,
	"// use Java-like import *...\n" +
	"// importPackage(java.io);\n" +
	"// or import a specific class\n" +
	"// importClass(java.io.File);\n" +
	"// or better - import just within a scope!\n" +
	"var ioPkgs = JavaImporter(java.io);\n" +
	"with (ioPkgs) { alert(new File('.').absolutePath); }");
	}
	actionJavaImport.title = "Java Import";

	// "Help" menu

	/*
	* Shows a one liner help message for each
	* global function. Note that this function
	* depends on docString meta-data for each
	* function.
	*/
	function actionHelpGlobals() {
	var names = new java.util.ArrayList();
	for (var i in globalThis) {
	var func = globalThis[i];
	if (typeof(func) == "function" &&
	("docString" in func)) {
	names.add(i);
	}
	}
	java.util.Collections.sort(names);
	var helpDoc = new java.lang.StringBuffer();
	helpDoc.append("<table border='1'>");
	var itr = names.iterator();
	while (itr.hasNext()) {
	var name = itr.next();
	helpDoc.append("<tr><td>");
	helpDoc.append(name);
	helpDoc.append("</td><td>");
	helpDoc.append(globalThis[name].docString);
	helpDoc.append("</td></tr>");
	}
	helpDoc.append("</table>");

	var helpEditor = new guiPkgs.JEditorPane();
	helpEditor.setContentType("text/html");
	helpEditor.setEditable(false);
	helpEditor.setText(helpDoc.toString());

	var scroller = new guiPkgs.JScrollPane();
	var port = scroller.getViewport();
	port.add(helpEditor);

	var helpFrame = new guiPkgs.JFrame("Help - Global Functions");
	helpFrame.getContentPane().add("Center", scroller);
	helpFrame.setDefaultCloseOperation(guiPkgs.WindowConstants.DISPOSE_ON_CLOSE);
	helpFrame.pack();
	helpFrame.setSize(500, 600);
	helpFrame.setVisible(true);
	}

	// show a simple about message for scriptpad
	function actionAbout() {
	alert("Scriptpad\nVersion 1.1", "Scriptpad");
	}

	/*
	* This data is used to construct menu bar.
	* This way adding a menu is easier. Just add
	* top level menu or add an item to an existing
	* menu. "action" should be a function that is
	* called back on clicking the correponding menu.
	*/
	var menuData = [
	{
	menu: "File",
	items: [
	{ name: "New", action: actionNew , accel: guiPkgs.KeyEvent.VK_N },
	{ name: "Open...", action: actionOpen, accel: guiPkgs.KeyEvent.VK_O },
	{ name: "Open URL...", action: actionOpenURL, accel: guiPkgs.KeyEvent.VK_U },
	{ name: "Save", action: actionSave, accel: guiPkgs.KeyEvent.VK_S },
	{ name: "Save As...", action: actionSaveAs },
	{ name: "-" },
	{ name: "Exit", action: actionExit, accel: guiPkgs.KeyEvent.VK_Q }
	]
	},

	{
	menu: "Edit",
	items: [
	{ name: "Cut", action: actionCut, accel: guiPkgs.KeyEvent.VK_X },
	{ name: "Copy", action: actionCopy, accel: guiPkgs.KeyEvent.VK_C },
	{ name: "Paste", action: actionPaste, accel: guiPkgs.KeyEvent.VK_V },
	{ name: "-" },
	{ name: "Select All", action: actionSelectAll, accel: guiPkgs.KeyEvent.VK_A }
	]
	},

	{
	menu: "Tools",
	items: [
	{ name: "Run", action: actionRun, accel: guiPkgs.KeyEvent.VK_R }
	]
	},

	{
	menu: "Examples",
	items: [
	{ name: actionHello.title, action: actionHello },
	{ name: actionEval.title, action: actionEval },
	{ name: actionJavaStatic.title, action: actionJavaStatic },
	{ name: actionJavaAccess.title, action: actionJavaAccess },
	{ name: actionJavaBean.title, action: actionJavaBean },
	{ name: actionJavaInterface.title, action: actionJavaInterface },
	{ name: actionJavaImport.title, action: actionJavaImport }
	]
	},

	{
	menu: "Help",
	items: [
	{ name: "Global Functions", action: actionHelpGlobals },
	{ name: "-" },
	{ name: "About Scriptpad", action: actionAbout }
	]
	}
	];

	function setMenuAccelerator(mi, accel) {
	var keyStroke = guiPkgs.KeyStroke.getKeyStroke(accel,
	guiPkgs.Toolkit.getDefaultToolkit().getMenuShortcutKeyMask(), false);
	mi.setAccelerator(keyStroke);
	}

	// create a menubar using the above menu data
	function createMenubar() {
	var mb = new guiPkgs.JMenuBar();
	for (var m in menuData) {
	var items = menuData[m].items;
	var menu = new guiPkgs.JMenu(menuData[m].menu);

	for (var i in items) {
	if (items[i].name.equals("-")) {
	menu.addSeparator();
	} else {
	var mi = new guiPkgs.JMenuItem(items[i].name);
	var action = items[i].action;
	mi.addActionListener(action);
	var accel = items[i].accel;
	if (accel) {
	setMenuAccelerator(mi, accel);
	}
	menu.add(mi);
	}
	}

	mb.add(menu);
	}

	return mb;
	}

	// function to add a new menu item under "Tools" menu
	function addTool(menuItem, action, accel) {
	if (typeof(action) != "function") {
	return;
	}

	var toolsIndex = -1;
	// find the index of the "Tools" menu
	for (var i in menuData) {
	if (menuData[i].menu.equals("Tools")) {
	toolsIndex = i;
	break;
	}
	}
	if (toolsIndex == -1) {
	return;
	}
	var toolsMenu = frame.getJMenuBar().getMenu(toolsIndex);
	var mi = new guiPkgs.JMenuItem(menuItem);
	mi.addActionListener(action);
	if (accel) {
	setMenuAccelerator(mi, accel);
	}
	toolsMenu.add(mi);
	}

	// create Scriptpad frame
	function createFrame() {
	frame = new guiPkgs.JFrame();
	frame.setTitle(defaultTitle);
	frame.setBackground(guiPkgs.Color.lightGray);
	frame.getContentPane().setLayout(new guiPkgs.BorderLayout());

	// create notepad panel
	var notepad = new guiPkgs.JPanel();
	notepad.setBorder(guiPkgs.BorderFactory.createEtchedBorder());
	notepad.setLayout(new guiPkgs.BorderLayout());

	// create editor
	editor = createEditor();
	var scroller = new guiPkgs.JScrollPane();
	var port = scroller.getViewport();
	port.add(editor);

	// add editor to notepad panel
	var panel = new guiPkgs.JPanel();
	panel.setLayout(new guiPkgs.BorderLayout());
	panel.add("Center", scroller);
	notepad.add("Center", panel);

	// add notepad panel to frame
	frame.getContentPane().add("Center", notepad);

	// set menu bar to frame and show the frame
	frame.setJMenuBar(createMenubar());
	frame.setDefaultCloseOperation(guiPkgs.JFrame.EXIT_ON_CLOSE);
	frame.pack();
	frame.setSize(500, 600);
	}

	// show Scriptpad frame
	function showFrame() {
	// set global variable by the name "window"
	globalThis.window = frame;

	// open new document
	actionNew();

	frame.setVisible(true);
	}

	// create and show Scriptpad frame
	createFrame();
	showFrame();

	/*
	* Application object has two fields "frame", "editor"
	* which are current JFrame and editor and a method
	* called "addTool" to add new menu item to "Tools" menu.
	*/
	return {
	frame: frame,
	editor: editor,
	addTool: addTool
	};
	};

	/*
	* Call the main and store Application object
	* in a global variable named "application".
	*/
	var application = main();

	if (this.load == undefined) {
	function load(file) {
	var ioPkgs = new JavaImporter(java.io);
	with (ioPkgs) {
	var stream = new FileInputStream(file);
	var bstream = new BufferedInputStream(stream);
	var reader = new BufferedReader(new InputStreamReader(bstream));
	var oldFilename = engine.get(engine.FILENAME);
	engine.put(engine.FILENAME, file);
	try {
	engine.eval(reader, context);
	} finally {
	engine.put(engine.FILENAME, oldFilename);
	}
	stream.close();
	}
	}
	load.docString = "loads the given script file";
	}

	/*
	* Load user specific init file under home dir, if found.
	*/
	function loadUserInit() {
	var home = java.lang.System.getProperty("user.home");
	var f = new java.io.File(home, "scriptpad.js");
	if (f.exists()) {
	engine.eval(new java.io.FileReader(f));
	}
	}

	loadUserInit();