viewsourceframe.java

用java开发的浏览器

import java.awt.AWTEvent;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.WindowConstants;
import javax.swing.border.Border;


public class ViewSourceFrame extends JFrame implements ActionListener {
	JPanel contentPane;
	JPanel panel1=new JPanel();
	JPanel panel2=new JPanel();
	Border border1;
	
	JButton closeButton=new JButton();
	JButton saveButton=new JButton();
	JScrollPane jScrollPane1=new JScrollPane();
	JTextArea jTextArea1=new JTextArea();
	
	String htmlSource;
	
	public ViewSourceFrame(String htmlSource)
	{
		this.htmlSource=htmlSource;
		enableEvents(AWTEvent.WINDOW_EVENT_MASK);
		setSize(new Dimension(600,500));
		setTitle("源代码");
		setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
		
		contentPane=(JPanel)getContentPane();
		contentPane.setLayout(new BorderLayout());
		
		panel2.setLayout(new FlowLayout());
		
		saveButton.setText("保存");
		closeButton.setText("退出");
		
		closeButton.addActionListener(this);
		saveButton.addActionListener(this);
		
		jScrollPane1.getViewport().add(jTextArea1,null);
		border1=BorderFactory.createEmptyBorder(4,4,4,4);
		panel1.setLayout(new BorderLayout());
		panel1.setBorder(border1);
		panel1.add(jScrollPane1,BorderLayout.CENTER);
		contentPane.add(panel1,BorderLayout.CENTER);
		
		panel2.add(saveButton);
		panel2.add(closeButton);
		
		contentPane.add(panel2,BorderLayout.SOUTH);
		this.jTextArea1.setEditable(true);
		this.jTextArea1.setText(this.htmlSource);
		
		//设置光标位置，将其揿动到文本区第0个字符
		this.jTextArea1.setCaretPosition(0);
		
	}
	

	public void actionPerformed(ActionEvent e) {
		
		String url="";
		if(e.getSource()==closeButton)
		{
			dispose();
		}
		else if(e.getSource()==saveButton)
		{
			JFileChooser fc=new JFileChooser();
			int returnVal=fc.showSaveDialog(ViewSourceFrame.this);
			File saveFile=fc.getSelectedFile();
			try
			{
				FileWriter writeOut=new FileWriter(saveFile);
				writeOut.write(jTextArea1.getText());
				writeOut.close();
			}
			catch(IOException ex)
			{
				System.out.println("保存失败！");
			}
			
		}
		
	}
	

}