helpframe.java

来自「一个简单有效的CMM语言的词法分析器,带图形界面」· Java 代码 · 共 68 行

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

public class HelpFrame extends JFrame
{
	public HelpFrame()
	{
		setTitle("帮助");
		setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);

		Container contentPane = getContentPane();


		//

		helpArea = new JTextArea(20,50);
		helpArea.setLineWrap(true);
		helpArea.setEditable(false);
		helpArea.setFont(new Font("sans",Font.CENTER_BASELINE,13));
		scrollPane = new JScrollPane(helpArea);
		JPanel areaPanel = new JPanel();
		areaPanel.add(scrollPane);



		//set closeButton
		JPanel basePanel = new JPanel();
		closeButton = new JButton("关闭");
		closeButton.addActionListener(new
		ActionListener()
		{
			public void actionPerformed(ActionEvent event)
			{
				dispose();
			}
		});
		basePanel.add(closeButton);
		//read from the file to helpArea
		//initial textReader to read the content of the doc file
		try
		{
			textReader = new BufferedReader(new FileReader("doc/manual/help.dat"));
			String line ;
			while(( line=textReader.readLine())!= null)
			{
				helpArea.append(line+'\n');
			}
		}catch(Exception e){}

		//add to contentPane
		contentPane.add(scrollPane,BorderLayout.CENTER);
		contentPane.add(basePanel,BorderLayout.SOUTH);


	}
	private JButton closeButton;
	private BufferedReader textReader;
	private JTextArea helpArea;
	private JScrollPane scrollPane;
	public static final int DEFAULT_WIDTH = 450;
	public static final int DEFAULT_HEIGHT = 500;

}