lexicalframe.java

一个简单有效的CMM语言的词法分析器,带图形界面

package com.lexical.src;
import com.lexical.src.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class LexicalFrame extends JFrame
{
	public LexicalFrame()
	{
		setTitle("LexicalAnalyer");
		setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);

		contentPane = getContentPane();

		//initial something
		lexicalBuffer = new LexicalBuffer();
		lexicalPanel = new LexicalPanel(DEFAULT_WIDTH,DEFAULT_HEIGHT);
		lexicalThread = new LexicalThread(lexicalPanel);
		lexicalBuffer.setThread(lexicalThread);
		lexicalBuffer.setPanel(lexicalPanel);
		contentPane.add(lexicalPanel,BorderLayout.CENTER);

		JPanel basePanel = new JPanel();
		fileNameField =  new JTextField(10);
		startButton = new JButton("analy");
		startButton.addActionListener(new StartListener());

		speedComboBox = new JComboBox();
		speedComboBox.addItem("slow");
		speedComboBox.addItem("middle");
		speedComboBox.addItem("fast");
		speedComboBox.addItem("nothing");
		speedComboBox.addActionListener(new SpeedActionListener());


		basePanel.add(new JLabel("fileName"));
		basePanel.add(fileNameField);
		basePanel.add(startButton);
		basePanel.add(new JLabel("speed is"));
		basePanel.add(speedComboBox);


		menuBar = new JMenuBar();
		setJMenuBar(menuBar);
		//file menu
		JMenu fileMenu = new JMenu("Analyer");
		fileMenu.add(new
				AbstractAction("退出")
				{
					public void actionPerformed(ActionEvent event)
					{
						System.exit(0);
					}
		});
		//operation menu
		
		//add lookandfeel
		JMenu  setMenu = new JMenu("Operation");
		ButtonGroup lookAndFeelGroup = new ButtonGroup();
		
		JRadioButtonMenuItem metalItem = new JRadioButtonMenuItem("metal");
		JRadioButtonMenuItem motifItem = new JRadioButtonMenuItem("motif");
		metalItem.setSelected(true);
		lookAndFeelGroup.add(motifItem);
		lookAndFeelGroup.add(metalItem);
		metalItem.addActionListener(new LookAndFeelActionListener());
		motifItem.addActionListener(new LookAndFeelActionListener());
		
		JMenu lookAndFeelMenu = new JMenu("LookAndFeel");
		lookAndFeelMenu.add(metalItem);
		lookAndFeelMenu.add(motifItem);
		
		//add pointer show
		ButtonGroup pointerShowGroup = new ButtonGroup();
		JRadioButtonMenuItem  bothItem = new JRadioButtonMenuItem("both");
		bothItem.setSelected(true);
		JRadioButtonMenuItem  neitherItem = new JRadioButtonMenuItem("neither");
		JRadioButtonMenuItem  onlyForwardItem = new JRadioButtonMenuItem("only forward");
		JRadioButtonMenuItem  onlyBeginningItem = new JRadioButtonMenuItem("only beginning");
		
		PointerShowListener pointerShowListener = new PointerShowListener();
		bothItem.addActionListener(pointerShowListener);
		neitherItem.addActionListener(pointerShowListener);
		onlyForwardItem.addActionListener(pointerShowListener);
		onlyBeginningItem.addActionListener(pointerShowListener);
		
		pointerShowGroup.add(bothItem);
		pointerShowGroup.add(neitherItem);
		pointerShowGroup.add(onlyForwardItem);
		pointerShowGroup.add(onlyBeginningItem);
		
		JMenu pointerShowMenu = new JMenu("Pointer");
		pointerShowMenu.add(bothItem);
		pointerShowMenu.add(neitherItem);
		pointerShowMenu.add(onlyForwardItem);
		pointerShowMenu.add(onlyBeginningItem);
		
		setMenu.add(lookAndFeelMenu);
		setMenu.add(pointerShowMenu);
		//help menu
		JMenu helpMenu = new JMenu("Help");
		JMenuItem aboutItem = new JMenuItem("关于");
		aboutItem.addActionListener(new AboutActionListener());

		JMenuItem helpItem = new JMenuItem("帮助");
		helpItem.addActionListener(new HelpActionListener());

		helpMenu.add(helpItem);
		helpMenu.add(aboutItem);

		//add to menubar
		menuBar.add(fileMenu);
		menuBar.add(setMenu);
		menuBar.add(helpMenu);


		//JPanel northPanel = new JPanel();
		//aboutButton = new JButton("关于");
		//aboutButton.addActionListener(new AboutActionListener());
		//northPanel.add(aboutButton,FlowLayout.LEFT);

		contentPane.add(basePanel,BorderLayout.SOUTH);
		//contentPane.add(northPanel,BorderLayout.NORTH);
	}

	public static final int DEFAULT_WIDTH = 500;
	public static final int DEFAULT_HEIGHT = 300;
	private LexicalPanel lexicalPanel;
    private Container contentPane;
	private LexicalBuffer lexicalBuffer;
	private JButton startButton;
	private JButton aboutButton;
	private JMenuBar menuBar;
	private JComboBox speedComboBox;
	private JTextField fileNameField;
	private LexicalAnalyer lexicalAnalyer;
	private LexicalThread lexicalThread;
	private class StartListener implements ActionListener
	{
		public void actionPerformed(ActionEvent event)
		{
			String fileName = fileNameField.getText().trim();
			lexicalThread.setFileName(fileName);
			Thread thread = new Thread(lexicalThread);
			thread.start();
		}
	}
	private class SpeedActionListener implements ActionListener
	{
		public void actionPerformed(ActionEvent event)
		{
			String speed =(String)speedComboBox.getSelectedItem();
			if(speed.equals("slow"))
			{
				lexicalThread.setSleepTime(1000);
			}
			else if(speed.equals("middle"))
			{
				lexicalThread.setSleepTime(500);
			}
			else if(speed.equals("fast"))
			{
				lexicalThread.setSleepTime(250);
			}
			else if(speed.equals("nothing"))
			{
				lexicalThread.setSleepTime(1);
			}
			else{}
		}
	}
	private class AboutActionListener implements ActionListener
	{
		public void actionPerformed(ActionEvent event)
		{
			AboutFrame frame = new AboutFrame();
			//frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
			frame.show();
		}
	}
	private class HelpActionListener implements ActionListener
	{
		public void actionPerformed(ActionEvent event)
		{
			HelpFrame frame = new HelpFrame();
			frame.show();
		}
	}
	private class LookAndFeelActionListener implements ActionListener
	{
		public void actionPerformed(ActionEvent event)
		{
			String text =( (JRadioButtonMenuItem)event.getSource()).getText();
			String lookAndFeel="";
			if(text.equals("motif"))
				lookAndFeel = "com.sun.java.swing.plaf.motif.MotifLookAndFeel";
			else if(text.equals("metal"))
				lookAndFeel = "javax.swing.plaf.metal.MetalLookAndFeel";
			else ;
			try{
				UIManager.setLookAndFeel(lookAndFeel);
				SwingUtilities.updateComponentTreeUI(LexicalFrame.this);
			}catch(Exception e){}
		}
	}
	private class PointerShowListener implements ActionListener
	{
		public void actionPerformed(ActionEvent event)
		{
			String text =( (JRadioButtonMenuItem)event.getSource()).getText();
			if(text.equals("both"))
			{
				lexicalPanel.setShowFowardPointerIndex(true);
				lexicalPanel.setShowBeginningPointerIndex(true);
			}
			else if(text.equals("neither"))
			{
				lexicalPanel.setShowFowardPointerIndex(false);
				lexicalPanel.setShowBeginningPointerIndex(false);
			}
			else if(text.equals("only forward"))
			{
				lexicalPanel.setShowFowardPointerIndex(true);
				lexicalPanel.setShowBeginningPointerIndex(false);
			}
			else if(text.equals("only beginning"))
			{
				lexicalPanel.setShowFowardPointerIndex(false);
				lexicalPanel.setShowBeginningPointerIndex(true);
			}
			else;
		}
	}

}