public void actionPerformed(ActionEvent a) { String command = a.getActionCommand(); if (command.equals("e")) { // Log toggle. if (consoleDisplayed = !consoleDisplayed) { splitter.add(outputScroll); splitter.setDividerLocation(.8); } else { splitter.remove(outputScroll); } } else if (command.equals("k")) { if (text.getText().contains("class")) { // This means we should try to compile this as normal. // Pulls out class name String code = text.getText(); int firstPos = code.indexOf("class"); int secondPos = code.indexOf("{"); String name = code.substring(firstPos + "class".length() + 1, secondPos).trim(); compileAndRun(name, text.getText()); } else { // This means we should compile this as a playground. String code = text.getText(); // Common import statements built-in String importDump = new String(); importDump += ("import java.util.*;\n" + "import javax.swing.*;\n" + "import javax.swing.event.*;\n" + "import java.awt.*;\n" + "import java.awt.event.*;\n" + "import java.io.*;\n"); // Pulls out any "import" statements and appends them to the import dump. int i = code.indexOf("import"); while (i >= 0) { String s = code.substring(i, code.indexOf(";", i) + 1); code = code.replaceFirst(s, ""); importDump += s + "\n"; i = code.indexOf("import", i + 1); } // Inject the class header and main method code = "//User and auto-imports pre-defined\n" + importDump + "//Autogenerated class\npublic class Main {\npublic static void main(String[] args) {\n" + code + "\n}\n}"; compileAndRun("Main", code); } } }
public static void main() { // Main frame = new JFrame("Java Playground"); frame.setSize(640, 480); // Make sure the divider is properly resized frame.addComponentListener( new ComponentAdapter() { public void componentResized(ComponentEvent c) { splitter.setDividerLocation(.8); } }); // Make sure the JVM is reset on close frame.addWindowListener( new WindowAdapter() { public void windowClosed(WindowEvent w) { new FrameAction().kill(); } }); // Setting up the keybinding // Ctrl+k or Cmd+k -> compile bind(KeyEvent.VK_K); // Ctrl+e or Cmd+e -> console bind(KeyEvent.VK_E); // Save, New file, Open file, Print. // Currently UNUSED until I figure out how normal java files and playground files will // interface. bind(KeyEvent.VK_S); bind(KeyEvent.VK_N); bind(KeyEvent.VK_O); bind(KeyEvent.VK_P); // Binds the keys to the action defined in the FrameAction class. frame.getRootPane().getActionMap().put("console", new FrameAction()); // The main panel for typing code in. text = new JTextPane(); textScroll = new JScrollPane(text); textScroll.setBorder(null); textScroll.setPreferredSize(new Dimension(640, 480)); // Document with syntax highlighting. Currently unfinished. doc = text.getStyledDocument(); doc.addDocumentListener( new DocumentListener() { public void changedUpdate(DocumentEvent d) {} public void insertUpdate(DocumentEvent d) {} public void removeUpdate(DocumentEvent d) {} }); ((AbstractDocument) doc).setDocumentFilter(new NewLineFilter()); // The output log; a combination compiler warning/error/runtime error/output log. outputText = new JTextPane(); outputScroll = new JScrollPane(outputText); outputScroll.setBorder(null); // "Constant" for the error font error = new SimpleAttributeSet(); error.addAttribute(StyleConstants.CharacterConstants.Italic, Boolean.TRUE); error.addAttribute(StyleConstants.Foreground, Color.RED); // "Constant" for the warning message font warning = new SimpleAttributeSet(); warning.addAttribute(StyleConstants.CharacterConstants.Italic, Boolean.TRUE); warning.addAttribute(StyleConstants.Foreground, Color.PINK); // "Constant" for the debugger error font progErr = new SimpleAttributeSet(); progErr.addAttribute(StyleConstants.Foreground, Color.BLUE); // Print streams to redirect System.out and System.err. out = new TextOutputStream(outputText, null); err = new TextOutputStream(outputText, error); System.setOut(new PrintStream(out)); System.setErr(new PrintStream(err)); // Sets up the output log outputText.setEditable(false); outputScroll.setVisible(true); // File input/output setup chooser = new JFileChooser(); // Setting up miscellaneous stuff compiler = ToolProvider.getSystemJavaCompiler(); JVMrunning = false; redirectErr = null; redirectOut = null; redirectIn = null; // Sets up the splitter pane and opens the program up splitter = new JSplitPane(JSplitPane.VERTICAL_SPLIT, textScroll, outputScroll); consoleDisplayed = false; splitter.remove(outputScroll); // Initially hides terminal until it is needed splitter.setOneTouchExpandable(true); frame.add(splitter); frame.setVisible(true); // Sets the divider to the proper one, for debugging // splitter.setDividerLocation(.8); }
public void actionPerformed(ActionEvent a) { // Note that this only works on *nix OSes. // For windows, get the first character of the action command, cast it to int, and compare // that on a case-by-case basis. String command = a.getActionCommand(); if (command.equals("e")) { // Log toggle. if (consoleDisplayed = !consoleDisplayed) { splitter.add(outputScroll); splitter.setDividerLocation(defaultSliderPosition); } else { splitter.remove(outputScroll); } } else if (command.equals("r")) { // Gets the code into a string. String code = text.getText(); // Marks certain areas as "dirty". // Dirty areas are places that shouldn't be considered for any keywords, // including "import", "extend", and so on. ArrayList<Integer> dirtyBounds = getDirty(code); if (text.getText().contains("class")) { // This means we should try to compile this as normal. // Pulls out class name int firstPos = code.indexOf("public class"); int secondPos = code.indexOf("{"); String name = code.substring(firstPos + "public class".length() + 1, secondPos).trim(); // Just a safety check to make sure you don't try to modify this program while it's // running. if (name.equals("Playground")) { System.out.println( "I know what you're doing and I don't approve. I won't even compile that."); return; } compileAndRun(name, code); } else { // This means we should compile this as a playground. // Common import statements built-in String importDump = new String(); importDump += ( // "import java.util.*;\n" + "import javax.swing.*;\n" + "import javax.swing.event.*;\n" + "import java.awt.*;\n" + "import java.awt.event.*;\n" + "import java.io.*;\n"); // User-defined or auto-generated methods String methodDump = new String(); // dirtyBounds.forEach(System.out::println); // Pulls out any "import" statements and appends them to the import dump. int i = code.indexOf("import"); while (i >= 0) { // Ignores comments and string literals if (isDirty(dirtyBounds, i)) { i = code.indexOf("import", i + 1); continue; } String s = code.substring(i, code.indexOf(";", i) + 1); // System.out.println("Found import: " + s); code = code.replaceFirst(s, ""); importDump += s + "\n"; i = code.indexOf("import", i + 1); } // Pulls out methods- these are defined by the keyword "method" until a closing bracket. /* i = code.indexOf("method"); while(i >= 0) { //Ignores comments and string literals if (isDirty(dirtyBounds, i)) { i = code.indexOf("method", i+1); continue; } //This scans from the first '{' until the last '}' to pull out the full method declaration. char temp = 0; int pos = code.indexOf("{", i+1), count = 1; if(pos != -1) { while(++pos < code.length()) { if (count == 0) break; temp = code.charAt(pos); if (temp == '{') count++; if (temp == '}') count--; } } else { //Missing an opening bracket, so just remove "method" and hope it compiles. code = code.replaceFirst("method", ""); i = code.indexOf("method", i+1); continue; } String s = code.substring(i, pos); //System.out.println("Found method: " + s); code = code.replace(s, ""); methodDump+=(s.replaceFirst("method ", "static ")) + "\n"; i = code.indexOf("method", i+1); }*/ // Pulls out all methods i = code.indexOf("("); while (i >= 0) { if (isDirty(dirtyBounds, i)) { i = code.indexOf("(", i + 1); continue; } // Move backwards first char temp = 0; int pos = i; boolean shouldSkip = false; while (--pos > 0) { temp = code.charAt(pos); if (temp == '.') { shouldSkip = true; break; } // This is a method call, ie String.charAt(); if (temp == ';') { ++pos; break; } // This is most likely a method declaration, since we had no errors // If we hit the start of the file, that's probable a method dec. too! } if (shouldSkip || isDirty(dirtyBounds, pos)) { i = code.indexOf("(", i + 1); continue; } // If this def. isn't a method or it's in a comment int start = pos; temp = 0; pos = code.indexOf("{", i + 1); int count = 1; if (pos != -1) { while (++pos < code.length()) { if (count == 0) break; temp = code.charAt(pos); if (temp == '{') count++; if (temp == '}') count--; } } else { i = code.indexOf("(", i + 1); continue; } int end = pos; String s = code.substring(start, end); code = code.replace(s, ""); // Just to make it look nicer s = s.trim(); System.out.println("Found method: " + s); methodDump += (s + "\n"); i = code.indexOf("(", i + 1); } // Inject the class header and main method, imports, and methods code = "//User and auto-imports pre-defined\n" + importDump + "//Autogenerated class\n" + "public class Main {\n" + "public static void main(String[] args) {\n" + code + "}\n" + methodDump + "}"; // Run as normal compileAndRun("Main", code); } } else if (command.equals("k")) { kill(); } else if (command.equals("o")) { new OptionFrame(frame); } else if (command.equals("/")) { new HelpFrame(frame); } }