/*
* Copyright 2003-2007 the original author or authors.
*
* Licensed 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.
*/
package org.codehaus.groovy.antlr;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.lang.reflect.*;
import java.util.Hashtable;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.text.BadLocationException;
import org.codehaus.groovy.antlr.parser.*;
import antlr.*;
/**
* @author Santhosh Kumar T
* @version 1.0
*/
public class LexerFrame extends JFrame implements ActionListener{
JSplitPane jSplitPane1 = new JSplitPane();
JScrollPane jScrollPane1 = new JScrollPane();
JScrollPane jScrollPane2 = new JScrollPane();
JTextPane tokenPane = new HScrollableTextPane();
JButton jbutton = new JButton("open");
JPanel mainPanel = new JPanel(new BorderLayout());
JTextArea scriptPane = new JTextArea();
Border border1;
Border border2;
Class lexerClass;
public LexerFrame(Class lexerClass, Class tokenTypesClass){
super("Token Steam Viewer");
this.lexerClass = lexerClass;
try{
jbInit();
setSize(500, 500);
listTokens(tokenTypesClass);
final JPopupMenu popup = new JPopupMenu();
popup.add(loadFileAction);
jbutton.setSize(30,30);
jbutton.addMouseListener(new MouseAdapter(){
public void mouseReleased(MouseEvent e) {
//if(e.isPopupTrigger())
popup.show(scriptPane, e.getX(), e.getY());
}
});
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
} catch(Exception e){
e.printStackTrace();
}
}
Hashtable tokens = new Hashtable();
private void listTokens(Class tokenTypes) throws Exception{
Field field[] = tokenTypes.getDeclaredFields();
for(int i = 0; i<field.length; i++)
tokens.put(field[i].get(null), field[i].getName());
}
public void actionPerformed(ActionEvent ae){
Token token = (Token) ((JComponent) ae.getSource()).getClientProperty("token");
if(token.getType()==Token.EOF_TYPE){
scriptPane.select(0, 0);
return;
}
try{
int start = scriptPane.getLineStartOffset(token.getLine()-1)+token.getColumn()-1;
scriptPane.select(start, start+token.getText().length());
scriptPane.requestFocus();
} catch(BadLocationException ex){
// IGNORE
}
}
private Action loadFileAction = new AbstractAction("Open File..."){
public void actionPerformed(ActionEvent ae){
JFileChooser jfc = new JFileChooser();
int response = jfc.showOpenDialog(LexerFrame.this);
if(response!=JFileChooser.APPROVE_OPTION)
return;
try{
scanScript(jfc.getSelectedFile());
} catch(Exception ex){
ex.printStackTrace();
}
}
};
private void scanScript(File file) throws Exception{
scriptPane.read(new FileReader(file), null);
// create lexer
Constructor constructor = lexerClass.getConstructor(new Class[]{InputStream.class});
CharScanner lexer = (CharScanner) constructor.newInstance(new Object[]{new FileInputStream(file)});
tokenPane.setEditable(true);
tokenPane.setText("");
int line = 1;
ButtonGroup bg = new ButtonGroup();
Token token = null;
while(true){
token = lexer.nextToken();
JToggleButton tokenButton = new JToggleButton((String) tokens.get(Integer.valueOf(token.getType())));
bg.add(tokenButton);
tokenButton.addActionListener(this);
tokenButton.setToolTipText(token.getText());
tokenButton.putClientProperty("token", token);
tokenButton.setMargin(new Insets(0, 1, 0, 1));
tokenButton.setFocusPainted(false);
if(token.getLine()>line){
tokenPane.getDocument().insertString(tokenPane.getDocument().getLength(), "\n", null);
line = token.getLine();
}
insertComponent(tokenButton);
if(token.getType()==Token.EOF_TYPE)
break;
}
tokenPane.setEditable(false);
tokenPane.setCaretPosition(0);
}
private void insertComponent(JComponent comp){
try{
tokenPane.getDocument().insertString(tokenPane.getDocument().getLength(), " ", null);
} catch(BadLocationException ex1){
// Ignore
}
try{
tokenPane.setCaretPosition(tokenPane.getDocument().getLength()-1);
} catch(Exception ex){
tokenPane.setCaretPosition(0);
}
tokenPane.insertComponent(comp);
}
private void jbInit() throws Exception{
border1 = BorderFactory.createEmptyBorder();
border2 = BorderFactory.createEmptyBorder();
jSplitPane1.setOrientation(JSplitPane.VERTICAL_SPLIT);
tokenPane.setEditable(false);
tokenPane.setText("");
scriptPane.setFont(new java.awt.Font("DialogInput", 0, 12));
scriptPane.setEditable(false);
scriptPane.setMargin(new Insets(5, 5, 5, 5));
scriptPane.setText("");
jScrollPane1.setBorder(border1);
jScrollPane2.setBorder(border1);
jSplitPane1.setMinimumSize(new Dimension(800,600));
mainPanel.add(jSplitPane1, BorderLayout.CENTER);
mainPanel.add(jbutton,BorderLayout.NORTH);
this.getContentPane().add(mainPanel);
jSplitPane1.add(jScrollPane1, JSplitPane.LEFT);
jScrollPane1.getViewport().add(tokenPane, null);
jSplitPane1.add(jScrollPane2, JSplitPane.RIGHT);
jScrollPane2.getViewport().add(scriptPane, null);
jScrollPane1.setColumnHeaderView(new JLabel(" Token Stream:"));
jScrollPane2.setColumnHeaderView(new JLabel(" Input Script:"));
jSplitPane1.setResizeWeight(0.5);
}
public static void main(String[] args) throws Exception{
try{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch(Exception ignore){
// Ignore
}
new LexerFrame(GroovyLexer.class, GroovyTokenTypes.class).setVisible(true);
}
}
class HScrollableTextPane extends JTextPane{
public boolean getScrollableTracksViewportWidth(){
return(getSize().width<getParent().getSize().width);
}
public void setSize(Dimension d){
if(d.width<getParent().getSize().width){
d.width = getParent().getSize().width;
}
super.setSize(d);
}
}