import java.io.IOException;
import java.net.URL;
import javax.swing.*;
import javax.swing.text.Document;
import javax.swing.text.JTextComponent;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;

public class HtmlBrowser extends JFrame{
	JPanel contentPane;
	BorderLayout borderLayoutAll=new BorderLayout();
	JLabel jLabelPrompt=new JLabel();
	JPanel jPanelMain=new JPanel();
	BorderLayout borderLayoutMain=new BorderLayout();
	JTextField textFieldURL=new JTextField();
	JEditorPane jEditorPane=new JEditorPane();
	public HtmlBrowser(){
		try{
			jbInit();
		}
		catch(Exception e){
			e.printStackTrace();
		}
	}
	private void jbInit() throws Exception{
		contentPane=(JPanel)getContentPane();
		contentPane.setLayout(borderLayoutAll);
		jPanelMain.setLayout(borderLayoutMain);
		jLabelPrompt.setText("請輸入URL");
		textFieldURL.setText("");
		textFieldURL.addActionListener(new java.awt.event.ActionListener(){
			public void actionPerformed(ActionEvent e){
				textFieldURL_actionPerformed(e);}
			});
		jEditorPane.setEditable(false);
		jEditorPane.addHyperlinkListener(new javax.swing.event.HyperlinkListener()
		{
			public void hyperlinkUpdate(HyperlinkEvent e){
				jEditorPane_hyperlinkUpdate(e);
			}
		});
		JScrollPane scrollPane=new JScrollPane();
		scrollPane.getViewport().add(jEditorPane);
		jPanelMain.add(textFieldURL,"North");
		jPanelMain.add(scrollPane,"Center");
		contentPane.add(jLabelPrompt,"North");
		contentPane.add(jPanelMain,"Center");
		enableEvents(AWTEvent.WINDOW_EVENT_MASK);
		this.setSize(new Dimension(600,500));
		this.setTitle("迷你IE ");
		this.setVisible(true);
	}
	void textFieldURL_actionPerformed(ActionEvent e){
		try{
			jEditorPane.setPage(textFieldURL.getText());
		}
		catch(IOException ex){
			JOptionPane msg=new JOptionPane();
			JOptionPane.showMessageDialog(this," URL 地址不正確:  "+textFieldURL.getText(), "輸入不正確!",0);
		}
	}
	void jEditorPane_hyperlinkUpdate(HyperlinkEvent e){
		if(e.getEventType()==
		javax.swing.event.HyperlinkEvent.EventType.ACTIVATED){
			try{
				URL url=e.getURL();
				jEditorPane.setPage(url);
				textFieldURL.setText(url.toString());
			}
			catch(IOException io){
				JOptionPane msg=new JOptionPane();
				JOptionPane.showMessageDialog(this,"打開該鏈接失敗!","輸入不正確!",0);
			}
		}
	}
	protected void processWindowEvent(WindowEvent e){
		super.processWindowEvent(e);
		if(e.getID()==WindowEvent.WINDOW_CLOSING){
			System.exit(0);
		}
	}
	public static void main(String[] args){
		new HtmlBrowser();
	}
}