swinggui.java

javascript语言的解释器源码

/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Rhino JavaScript Debugger code, released
 * November 21, 2000.
 *
 * The Initial Developer of the Original Code is SeeBeyond Corporation.

 * Portions created by SeeBeyond are
 * Copyright (C) 2000 SeeBeyond Technology Corporation. All
 * Rights Reserved.
 *
 * Contributor(s):
 * Igor Bukanov
 * Matt Gould
 * 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.
 */

package org.mozilla.javascript.tools.debugger;

import javax.swing.*;
import javax.swing.text.*;
import javax.swing.event.*;
import javax.swing.table.*;
import java.awt.*;
import java.awt.event.*;

import java.util.*;
import java.io.*;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreePath;
import java.lang.reflect.Method;

import org.mozilla.javascript.Kit;

import org.mozilla.javascript.tools.shell.ConsoleTextArea;

import org.mozilla.javascript.tools.debugger.downloaded.JTreeTable;
import org.mozilla.javascript.tools.debugger.downloaded.TreeTableModel;
import org.mozilla.javascript.tools.debugger.downloaded.TreeTableModelAdapter;

class MessageDialogWrapper {

    static void showMessageDialog(Component parent, String msg,
                                  String title, int flags) {
        if (msg.length() > 60) {
            StringBuffer buf = new StringBuffer();
            int len = msg.length();
            int j = 0;
            int i;
            for (i = 0; i < len; i++, j++) {
                char c = msg.charAt(i);
                buf.append(c);
                if (Character.isWhitespace(c)) {
                    int remainder = len - i;
                    int k;
                    for (k = i + 1; k < len; k++) {
                        if (Character.isWhitespace(msg.charAt(k))) {
                            break;
                        }
                    }
                    if (k < len) {
                        int nextWordLen = k - i;
                        if (j + nextWordLen > 60) {
                            buf.append('\n');
                            j = 0;
                        }
                    }
                }
            }
            msg = buf.toString();
        }
        JOptionPane.showMessageDialog(parent, msg, title, flags);
    }
};

class EvalTextArea
    extends JTextArea implements KeyListener, DocumentListener
{
    static final long serialVersionUID = -3918033649601064194L;

    SwingGui debugGui;
    private java.util.Vector history;
    private int historyIndex = -1;
    private int outputMark = 0;

    public void select(int start, int end) {
        //requestFocus();
        super.select(start, end);
    }

    public EvalTextArea(SwingGui debugGui) {
        super();
        this.debugGui = debugGui;
        history = new java.util.Vector();
        Document doc = getDocument();
        doc.addDocumentListener(this);
        addKeyListener(this);
        setLineWrap(true);
        setFont(new Font("Monospaced", 0, 12));
        append("% ");
        outputMark = doc.getLength();
    }

    synchronized void returnPressed() {
        Document doc = getDocument();
        int len = doc.getLength();
        Segment segment = new Segment();
        try {
            doc.getText(outputMark, len - outputMark, segment);
        } catch (javax.swing.text.BadLocationException ignored) {
            ignored.printStackTrace();
        }
        String text = segment.toString();
        if (debugGui.dim.stringIsCompilableUnit(text)) {
            if (text.trim().length() > 0) {
               history.addElement(text);
               historyIndex = history.size();
            }
            append("\n");
            String result = debugGui.dim.eval(text);
            if (result.length() > 0) {
                append(result);
                append("\n");
            }
            append("% ");
            outputMark = doc.getLength();
        } else {
            append("\n");
        }
    }

    public void keyPressed(KeyEvent e) {
        int code = e.getKeyCode();
        if (code == KeyEvent.VK_BACK_SPACE || code == KeyEvent.VK_LEFT) {
            if (outputMark == getCaretPosition()) {
                e.consume();
            }
        } else if (code == KeyEvent.VK_HOME) {
           int caretPos = getCaretPosition();
           if (caretPos == outputMark) {
               e.consume();
           } else if (caretPos > outputMark) {
               if (!e.isControlDown()) {
                   if (e.isShiftDown()) {
                       moveCaretPosition(outputMark);
                   } else {
                       setCaretPosition(outputMark);
                   }
                   e.consume();
               }
           }
        } else if (code == KeyEvent.VK_ENTER) {
            returnPressed();
            e.consume();
        } else if (code == KeyEvent.VK_UP) {
            historyIndex--;
            if (historyIndex >= 0) {
                if (historyIndex >= history.size()) {
                    historyIndex = history.size() -1;
                }
                if (historyIndex >= 0) {
                    String str = (String)history.elementAt(historyIndex);
                    int len = getDocument().getLength();
                    replaceRange(str, outputMark, len);
                    int caretPos = outputMark + str.length();
                    select(caretPos, caretPos);
                } else {
                    historyIndex++;
                }
            } else {
                historyIndex++;
            }
            e.consume();
        } else if (code == KeyEvent.VK_DOWN) {
            int caretPos = outputMark;
            if (history.size() > 0) {
                historyIndex++;
                if (historyIndex < 0) {historyIndex = 0;}
                int len = getDocument().getLength();
                if (historyIndex < history.size()) {
                    String str = (String)history.elementAt(historyIndex);
                    replaceRange(str, outputMark, len);
                    caretPos = outputMark + str.length();
                } else {
                    historyIndex = history.size();
                    replaceRange("", outputMark, len);
                }
            }
            select(caretPos, caretPos);
            e.consume();
        }
    }

    public void keyTyped(KeyEvent e) {
        int keyChar = e.getKeyChar();
        if (keyChar == 0x8 /* KeyEvent.VK_BACK_SPACE */) {
            if (outputMark == getCaretPosition()) {
                e.consume();
            }
        } else if (getCaretPosition() < outputMark) {
            setCaretPosition(outputMark);
        }
    }

    public synchronized void keyReleased(KeyEvent e) {
    }

    public synchronized void write(String str) {
        insert(str, outputMark);
        int len = str.length();
        outputMark += len;
        select(outputMark, outputMark);
    }

    public synchronized void insertUpdate(DocumentEvent e) {
        int len = e.getLength();
        int off = e.getOffset();
        if (outputMark > off) {
            outputMark += len;
        }
    }

    public synchronized void removeUpdate(DocumentEvent e) {
        int len = e.getLength();
        int off = e.getOffset();
        if (outputMark > off) {
            if (outputMark >= off + len) {
                outputMark -= len;
            } else {
                outputMark = off;
            }
        }
    }

    public synchronized void postUpdateUI() {
        // this attempts to cleanup the damage done by updateComponentTreeUI
        //requestFocus();
        setCaret(getCaret());
        select(outputMark, outputMark);
    }

    public synchronized void changedUpdate(DocumentEvent e) {
    }
};

class EvalWindow
    extends JInternalFrame implements ActionListener
{
    static final long serialVersionUID = -2860585845212160176L;

    EvalTextArea evalTextArea;

    public void setEnabled(boolean b) {
        super.setEnabled(b);
        evalTextArea.setEnabled(b);
    }

    public EvalWindow(String name, SwingGui debugGui) {
        super(name, true, false, true, true);
        evalTextArea = new EvalTextArea(debugGui);
        evalTextArea.setRows(24);
        evalTextArea.setColumns(80);
        JScrollPane scroller = new JScrollPane(evalTextArea);
        setContentPane(scroller);
        //scroller.setPreferredSize(new Dimension(600, 400));
        pack();
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        String cmd = e.getActionCommand();
        if (cmd.equals("Cut")) {
            evalTextArea.cut();
        } else if (cmd.equals("Copy")) {
            evalTextArea.copy();
        } else if (cmd.equals("Paste")) {
            evalTextArea.paste();
        }
    }
};

class JSInternalConsole
    extends JInternalFrame implements ActionListener
{
    static final long serialVersionUID = -5523468828771087292L;

    ConsoleTextArea consoleTextArea;

    public InputStream getIn() {
        return consoleTextArea.getIn();
    }

    public PrintStream getOut() {
        return consoleTextArea.getOut();
    }

    public PrintStream getErr() {
        return consoleTextArea.getErr();
    }

    public JSInternalConsole(String name) {
        super(name, true, false, true, true);
        consoleTextArea = new ConsoleTextArea(null);
        consoleTextArea.setRows(24);
        consoleTextArea.setColumns(80);
        JScrollPane scroller = new JScrollPane(consoleTextArea);
        setContentPane(scroller);
        pack();
        addInternalFrameListener(new InternalFrameAdapter() {
                public void internalFrameActivated(InternalFrameEvent e) {
                    // hack
                    if (consoleTextArea.hasFocus()) {
                        consoleTextArea.getCaret().setVisible(false);
                        consoleTextArea.getCaret().setVisible(true);
                    }
                }
            });
    }

    public void actionPerformed(ActionEvent e) {
        String cmd = e.getActionCommand();
        if (cmd.equals("Cut")) {
            consoleTextArea.cut();
        } else if (cmd.equals("Copy")) {
            consoleTextArea.copy();
        } else if (cmd.equals("Paste")) {
            consoleTextArea.paste();
        }
    }


};

class FilePopupMenu extends JPopupMenu
{
    static final long serialVersionUID = 3589525009546013565L;

    FileTextArea w;
    int x, y;

    FilePopupMenu(FileTextArea w) {
        super();
        this.w = w;
        JMenuItem item;
        add(item = new JMenuItem("Set Breakpoint"));
        item.addActionListener(w);
        add(item = new JMenuItem("Clear Breakpoint"));
        item.addActionListener(w);
        add(item = new JMenuItem("Run"));
        item.addActionListener(w);
    }

    void show(JComponent comp, int x, int y) {
        this.x = x;
        this.y = y;
        super.show(comp, x, y);
    }
};

class FileTextArea extends JTextArea
    implements ActionListener, PopupMenuListener, KeyListener, MouseListener
{
    static final long serialVersionUID = -25032065448563720L;

    FileWindow w;
    FilePopupMenu popup;

    FileTextArea(FileWindow w) {
        this.w = w;