AOO410/main/scripting/examples/java/debugger/OOBeanShellDebugger.java - openoffice - Git at Google

 /**************************************************************
  *
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
  *
  *************************************************************/

 import javax.swing.JFrame;
 import javax.swing.JTextArea;
 import javax.swing.JPanel;
 import javax.swing.JScrollPane;
 import javax.swing.JButton;
 import javax.swing.JComponent;
 import javax.swing.JFileChooser;
 import javax.swing.JOptionPane;
 import javax.swing.text.Document;
 import javax.swing.event.DocumentListener;
 import javax.swing.event.DocumentEvent;

 import java.awt.FlowLayout;
 import java.awt.Graphics;
 import java.awt.Color;
 import java.awt.Font;
 import java.awt.FontMetrics;
 import java.awt.Polygon;
 import java.awt.Rectangle;
 import java.awt.Dimension;
 import java.awt.event.ActionListener;
 import java.awt.event.ActionEvent;

 import java.io.File;
 import java.io.InputStream;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;

 import drafts.com.sun.star.script.framework.runtime.XScriptContext;
 import bsh.Interpreter;

 public class OOBeanShellDebugger implements OOScriptDebugger, ActionListener, DocumentListener {

     private JFrame frame;
     private JTextArea ta;
     private GlyphGutter gg;
     private XScriptContext context;
     private int currentPosition = -1;
     private int linecount;
     private Interpreter sessionInterpreter;
     private Thread execThread = null;
     private String filename = null;

     /* Entry point for script execution */
     public void go(XScriptContext context, String filename) {
         if (filename != null && filename != "") {
             try {
                 FileInputStream fis = new FileInputStream(filename);
                 this.filename = filename;
                 go(context, fis);
             }
             catch (IOException ioe) {
                 JOptionPane.showMessageDialog(frame,
                     "Error loading file: " + ioe.getMessage(),
                     "Error", JOptionPane.ERROR_MESSAGE);
             }
         }
     }

     /* Entry point for script execution */
     public void go(XScriptContext context, InputStream in) {
         this.context = context;
         initUI();

         if (in != null) {
             try {
                 loadFile(in);
             }
             catch (IOException ioe) {
                 JOptionPane.showMessageDialog(frame,
                     "Error loading stream: " + ioe.getMessage(),
                     "Error", JOptionPane.ERROR_MESSAGE);
             }
         }
     }

     public void loadFile(InputStream in) throws IOException {

         /* Remove ourselves as a DocumentListener while loading the file
            so we don't get a storm of DocumentEvents during loading */
         ta.getDocument().removeDocumentListener(this);

         byte[] contents = new byte[1024];
         int len = 0, pos = 0;

         while ((len = in.read(contents, 0, 1024)) != -1) {
             ta.insert(new String(contents, 0, len), pos);
             pos += len;
         }

         try {
             in.close();
         }
         catch (IOException ignore) {
         }

         /* Update the GlyphGutter and add back the DocumentListener */
         gg.update();
         ta.getDocument().addDocumentListener(this);
     }

     private void initUI() {
         frame = new JFrame("BeanShell Debug Window");
         ta = new JTextArea();
         ta.setRows(15);
         ta.setColumns(40);
         ta.setLineWrap(false);
         linecount = ta.getLineCount();

         gg = new GlyphGutter(this);

         final JScrollPane sp = new JScrollPane();
         sp.setViewportView(ta);
         sp.setRowHeaderView(gg);

         ta.getDocument().addDocumentListener(this);
         String[] labels = {"Run", "Clear", "Save", "Close"};
         JPanel p = new JPanel();
         p.setLayout(new FlowLayout());

         for (int i = 0; i < labels.length; i++) {
             JButton b = new JButton(labels[i]);
             b.addActionListener(this);
             p.add(b);

             if (labels[i].equals("Save") && filename == null) {
                 b.setEnabled(false);
             }
         }

         frame.getContentPane().add(sp, "Center");
         frame.getContentPane().add(p, "South");
         frame.pack();
         frame.show();
     }

     /* Implementation of DocumentListener interface */
     public void insertUpdate(DocumentEvent e) {
         doChanged(e);
     }

     public void removeUpdate(DocumentEvent e) {
         doChanged(e);
     }

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

     /* If the number of lines in the JTextArea has changed then update the
        GlyphGutter */
     public void doChanged(DocumentEvent e) {
         if (linecount != ta.getLineCount()) {
             gg.update();
             linecount = ta.getLineCount();
         }
     }

     private void startExecution() {
         execThread = new Thread() {
             public void run() {
                 Interpreter interpreter = new Interpreter();
                 interpreter.getNameSpace().clear();

                 // reset position and repaint gutter so no red arrow appears
                 currentPosition = -1;
                 gg.repaint();

                 try {
                     interpreter.set("context", context);
                     interpreter.eval(ta.getText());
                 }
                 catch (bsh.EvalError err) {
                     currentPosition = err.getErrorLineNumber() - 1;
                     try {
                         // scroll to line of the error
                         int line = ta.getLineStartOffset(currentPosition);
                         Rectangle rect = ta.modelToView(line);
                         ta.scrollRectToVisible(rect);
                     }
                     catch (Exception e) {
                         // couldn't scroll to line, do nothing
                     }
                     gg.repaint();

                     JOptionPane.showMessageDialog(frame, "Error at line " +
                         String.valueOf(err.getErrorLineNumber()) +
                         "\n\n: " + err.getErrorText(),
                         "Error", JOptionPane.ERROR_MESSAGE);
                 }
                 catch (Exception e) {
                     JOptionPane.showMessageDialog(frame,
                         "Error: " + e.getMessage(),
                         "Error", JOptionPane.ERROR_MESSAGE);
                 }
             }
         };
         execThread.start();
     }

     private void promptForSaveName() {
         JFileChooser chooser = new JFileChooser();
         chooser.setFileFilter(new javax.swing.filechooser.FileFilter() {
             public boolean accept(File f) {
                 if (f.isDirectory() || f.getName().endsWith(".bsh")) {
                     return true;
                 }
                 return false;
             }

             public String getDescription() {
                 return ("BeanShell files: *.bsh");
             }
         });

         int ret = chooser.showSaveDialog(frame);

         if (ret == JFileChooser.APPROVE_OPTION) {
             filename = chooser.getSelectedFile().getAbsolutePath();
             if (!filename.endsWith(".bsh")) {
                 filename += ".bsh";
             }
         }

     }

     private void saveTextArea() {
         if (filename == null) {
             promptForSaveName();
         }

         FileOutputStream fos = null;
         if (filename != null) {
             try {
                 File f = new File(filename);
                 fos = new FileOutputStream(f);
                 String s = ta.getText();
                 fos.write(s.getBytes(), 0, s.length());
             }
             catch (IOException ioe) {
                 JOptionPane.showMessageDialog(frame,
                     "Error saving file: " + ioe.getMessage(),
                     "Error", JOptionPane.ERROR_MESSAGE);
             }
             finally {
                 if (fos != null) {
                     try {
                         fos.close();
                     }
                     catch (IOException ignore) {
                     }
                 }
             }
         }
     }

     public void actionPerformed(ActionEvent e) {
         if (e.getActionCommand().equals("Run")) {
             startExecution();
         }
         else if (e.getActionCommand().equals("Close")) {
             frame.dispose();
         }
         else if (e.getActionCommand().equals("Save")) {
             saveTextArea();
         }
         else if (e.getActionCommand().equals("Clear")) {
             ta.setText("");
         }
     }

     public JTextArea getTextArea() {
         return ta;
     }

     public int getCurrentPosition() {
         return currentPosition;
     }
 }

 class GlyphGutter extends JComponent {

     private OOBeanShellDebugger debugger;
     private final String DUMMY_STRING = "99";

     GlyphGutter(OOBeanShellDebugger debugger) {
         this.debugger = debugger;
         update();
     }

     public void update() {
         JTextArea textArea = debugger.getTextArea();
         Font font = textArea.getFont();
         setFont(font);

         FontMetrics metrics = getFontMetrics(font);
         int h = metrics.getHeight();
         int lineCount = textArea.getLineCount() + 1;

         String dummy = Integer.toString(lineCount);
         if (dummy.length() < 2) {
             dummy = DUMMY_STRING;
         }

         Dimension d = new Dimension();
         d.width = metrics.stringWidth(dummy) + 16;
         d.height = lineCount * h + 100;
         setPreferredSize(d);
         setSize(d);
     }

     public void paintComponent(Graphics g) {
         JTextArea textArea = debugger.getTextArea();

         Font font = textArea.getFont();
         g.setFont(font);

         FontMetrics metrics = getFontMetrics(font);
         Rectangle clip = g.getClipBounds();

         g.setColor(getBackground());
         g.fillRect(clip.x, clip.y, clip.width, clip.height);

         int ascent = metrics.getMaxAscent();
         int h = metrics.getHeight();
         int lineCount = textArea.getLineCount() + 1;

         int startLine = clip.y / h;
         int endLine = (clip.y + clip.height) / h + 1;
         int width = getWidth();
         if (endLine > lineCount) {
             endLine = lineCount;
         }

         for (int i = startLine; i < endLine; i++) {
             String text;
             text = Integer.toString(i + 1) + " ";
             int w = metrics.stringWidth(text);
             int y = i * h;
             g.setColor(Color.blue);
             g.drawString(text, 0, y + ascent);
             int x = width - ascent;

             // if currentPosition is not -1 then a red arrow will be drawn
             if (i == debugger.getCurrentPosition()) {
                 drawArrow(g, ascent, x, y);
             }
         }
     }

     private void drawArrow(Graphics g, int ascent, int x, int y) {
         Polygon arrow = new Polygon();
         int dx = x;
         y += ascent - 10;
         int dy = y;
         arrow.addPoint(dx, dy + 3);
         arrow.addPoint(dx + 5, dy + 3);
         for (x = dx + 5; x <= dx + 10; x++, y++) {
             arrow.addPoint(x, y);
         }
         for (x = dx + 9; x >= dx + 5; x--, y++) {
             arrow.addPoint(x, y);
         }
         arrow.addPoint(dx + 5, dy + 7);
         arrow.addPoint(dx, dy + 7);

         g.setColor(Color.red);
         g.fillPolygon(arrow);
         g.setColor(Color.black);
         g.drawPolygon(arrow);
     }
 };
	/**************************************************************
	*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing,
	* software distributed under the License is distributed on an
	* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	* KIND, either express or implied. See the License for the
	* specific language governing permissions and limitations
	* under the License.
	*
	*************************************************************/

	import javax.swing.JFrame;
	import javax.swing.JTextArea;
	import javax.swing.JPanel;
	import javax.swing.JScrollPane;
	import javax.swing.JButton;
	import javax.swing.JComponent;
	import javax.swing.JFileChooser;
	import javax.swing.JOptionPane;
	import javax.swing.text.Document;
	import javax.swing.event.DocumentListener;
	import javax.swing.event.DocumentEvent;

	import java.awt.FlowLayout;
	import java.awt.Graphics;
	import java.awt.Color;
	import java.awt.Font;
	import java.awt.FontMetrics;
	import java.awt.Polygon;
	import java.awt.Rectangle;
	import java.awt.Dimension;
	import java.awt.event.ActionListener;
	import java.awt.event.ActionEvent;

	import java.io.File;
	import java.io.InputStream;
	import java.io.FileInputStream;
	import java.io.FileOutputStream;
	import java.io.IOException;

	import drafts.com.sun.star.script.framework.runtime.XScriptContext;
	import bsh.Interpreter;

	public class OOBeanShellDebugger implements OOScriptDebugger, ActionListener, DocumentListener {

	private JFrame frame;
	private JTextArea ta;
	private GlyphGutter gg;
	private XScriptContext context;
	private int currentPosition = -1;
	private int linecount;
	private Interpreter sessionInterpreter;
	private Thread execThread = null;
	private String filename = null;

	/* Entry point for script execution */
	public void go(XScriptContext context, String filename) {
	if (filename != null && filename != "") {
	try {
	FileInputStream fis = new FileInputStream(filename);
	this.filename = filename;
	go(context, fis);
	}
	catch (IOException ioe) {
	JOptionPane.showMessageDialog(frame,
	"Error loading file: " + ioe.getMessage(),
	"Error", JOptionPane.ERROR_MESSAGE);
	}
	}
	}

	/* Entry point for script execution */
	public void go(XScriptContext context, InputStream in) {
	this.context = context;
	initUI();

	if (in != null) {
	try {
	loadFile(in);
	}
	catch (IOException ioe) {
	JOptionPane.showMessageDialog(frame,
	"Error loading stream: " + ioe.getMessage(),
	"Error", JOptionPane.ERROR_MESSAGE);
	}
	}
	}

	public void loadFile(InputStream in) throws IOException {

	/* Remove ourselves as a DocumentListener while loading the file
	so we don't get a storm of DocumentEvents during loading */
	ta.getDocument().removeDocumentListener(this);

	byte[] contents = new byte[1024];
	int len = 0, pos = 0;

	while ((len = in.read(contents, 0, 1024)) != -1) {
	ta.insert(new String(contents, 0, len), pos);
	pos += len;
	}

	try {
	in.close();
	}
	catch (IOException ignore) {
	}

	/* Update the GlyphGutter and add back the DocumentListener */
	gg.update();
	ta.getDocument().addDocumentListener(this);
	}

	private void initUI() {
	frame = new JFrame("BeanShell Debug Window");
	ta = new JTextArea();
	ta.setRows(15);
	ta.setColumns(40);
	ta.setLineWrap(false);
	linecount = ta.getLineCount();

	gg = new GlyphGutter(this);

	final JScrollPane sp = new JScrollPane();
	sp.setViewportView(ta);
	sp.setRowHeaderView(gg);

	ta.getDocument().addDocumentListener(this);
	String[] labels = {"Run", "Clear", "Save", "Close"};
	JPanel p = new JPanel();
	p.setLayout(new FlowLayout());

	for (int i = 0; i < labels.length; i++) {
	JButton b = new JButton(labels[i]);
	b.addActionListener(this);
	p.add(b);

	if (labels[i].equals("Save") && filename == null) {
	b.setEnabled(false);
	}
	}

	frame.getContentPane().add(sp, "Center");
	frame.getContentPane().add(p, "South");
	frame.pack();
	frame.show();
	}

	/* Implementation of DocumentListener interface */
	public void insertUpdate(DocumentEvent e) {
	doChanged(e);
	}

	public void removeUpdate(DocumentEvent e) {
	doChanged(e);
	}

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

	/* If the number of lines in the JTextArea has changed then update the
	GlyphGutter */
	public void doChanged(DocumentEvent e) {
	if (linecount != ta.getLineCount()) {
	gg.update();
	linecount = ta.getLineCount();
	}
	}

	private void startExecution() {
	execThread = new Thread() {
	public void run() {
	Interpreter interpreter = new Interpreter();
	interpreter.getNameSpace().clear();

	// reset position and repaint gutter so no red arrow appears
	currentPosition = -1;
	gg.repaint();

	try {
	interpreter.set("context", context);
	interpreter.eval(ta.getText());
	}
	catch (bsh.EvalError err) {
	currentPosition = err.getErrorLineNumber() - 1;
	try {
	// scroll to line of the error
	int line = ta.getLineStartOffset(currentPosition);
	Rectangle rect = ta.modelToView(line);
	ta.scrollRectToVisible(rect);
	}
	catch (Exception e) {
	// couldn't scroll to line, do nothing
	}
	gg.repaint();

	JOptionPane.showMessageDialog(frame, "Error at line " +
	String.valueOf(err.getErrorLineNumber()) +
	"\n\n: " + err.getErrorText(),
	"Error", JOptionPane.ERROR_MESSAGE);
	}
	catch (Exception e) {
	JOptionPane.showMessageDialog(frame,
	"Error: " + e.getMessage(),
	"Error", JOptionPane.ERROR_MESSAGE);
	}
	}
	};
	execThread.start();
	}

	private void promptForSaveName() {
	JFileChooser chooser = new JFileChooser();
	chooser.setFileFilter(new javax.swing.filechooser.FileFilter() {
	public boolean accept(File f) {
	if (f.isDirectory() \|\| f.getName().endsWith(".bsh")) {
	return true;
	}
	return false;
	}

	public String getDescription() {
	return ("BeanShell files: *.bsh");
	}
	});

	int ret = chooser.showSaveDialog(frame);

	if (ret == JFileChooser.APPROVE_OPTION) {
	filename = chooser.getSelectedFile().getAbsolutePath();
	if (!filename.endsWith(".bsh")) {
	filename += ".bsh";
	}
	}

	}

	private void saveTextArea() {
	if (filename == null) {
	promptForSaveName();
	}

	FileOutputStream fos = null;
	if (filename != null) {
	try {
	File f = new File(filename);
	fos = new FileOutputStream(f);
	String s = ta.getText();
	fos.write(s.getBytes(), 0, s.length());
	}
	catch (IOException ioe) {
	JOptionPane.showMessageDialog(frame,
	"Error saving file: " + ioe.getMessage(),
	"Error", JOptionPane.ERROR_MESSAGE);
	}
	finally {
	if (fos != null) {
	try {
	fos.close();
	}
	catch (IOException ignore) {
	}
	}
	}
	}
	}

	public void actionPerformed(ActionEvent e) {
	if (e.getActionCommand().equals("Run")) {
	startExecution();
	}
	else if (e.getActionCommand().equals("Close")) {
	frame.dispose();
	}
	else if (e.getActionCommand().equals("Save")) {
	saveTextArea();
	}
	else if (e.getActionCommand().equals("Clear")) {
	ta.setText("");
	}
	}

	public JTextArea getTextArea() {
	return ta;
	}

	public int getCurrentPosition() {
	return currentPosition;
	}
	}

	class GlyphGutter extends JComponent {

	private OOBeanShellDebugger debugger;
	private final String DUMMY_STRING = "99";

	GlyphGutter(OOBeanShellDebugger debugger) {
	this.debugger = debugger;
	update();
	}

	public void update() {
	JTextArea textArea = debugger.getTextArea();
	Font font = textArea.getFont();
	setFont(font);

	FontMetrics metrics = getFontMetrics(font);
	int h = metrics.getHeight();
	int lineCount = textArea.getLineCount() + 1;

	String dummy = Integer.toString(lineCount);
	if (dummy.length() < 2) {
	dummy = DUMMY_STRING;
	}

	Dimension d = new Dimension();
	d.width = metrics.stringWidth(dummy) + 16;
	d.height = lineCount * h + 100;
	setPreferredSize(d);
	setSize(d);
	}

	public void paintComponent(Graphics g) {
	JTextArea textArea = debugger.getTextArea();

	Font font = textArea.getFont();
	g.setFont(font);

	FontMetrics metrics = getFontMetrics(font);
	Rectangle clip = g.getClipBounds();

	g.setColor(getBackground());
	g.fillRect(clip.x, clip.y, clip.width, clip.height);

	int ascent = metrics.getMaxAscent();
	int h = metrics.getHeight();
	int lineCount = textArea.getLineCount() + 1;

	int startLine = clip.y / h;
	int endLine = (clip.y + clip.height) / h + 1;
	int width = getWidth();
	if (endLine > lineCount) {
	endLine = lineCount;
	}

	for (int i = startLine; i < endLine; i++) {
	String text;
	text = Integer.toString(i + 1) + " ";
	int w = metrics.stringWidth(text);
	int y = i * h;
	g.setColor(Color.blue);
	g.drawString(text, 0, y + ascent);
	int x = width - ascent;

	// if currentPosition is not -1 then a red arrow will be drawn
	if (i == debugger.getCurrentPosition()) {
	drawArrow(g, ascent, x, y);
	}
	}
	}

	private void drawArrow(Graphics g, int ascent, int x, int y) {
	Polygon arrow = new Polygon();
	int dx = x;
	y += ascent - 10;
	int dy = y;
	arrow.addPoint(dx, dy + 3);
	arrow.addPoint(dx + 5, dy + 3);
	for (x = dx + 5; x <= dx + 10; x++, y++) {
	arrow.addPoint(x, y);
	}
	for (x = dx + 9; x >= dx + 5; x--, y++) {
	arrow.addPoint(x, y);
	}
	arrow.addPoint(dx + 5, dy + 7);
	arrow.addPoint(dx, dy + 7);

	g.setColor(Color.red);
	g.fillPolygon(arrow);
	g.setColor(Color.black);
	g.drawPolygon(arrow);
	}
	};