!759

import java.awt.BorderLayout;

import java.awt.Cursor;

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyAdapter;

import java.awt.event.KeyEvent;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.awt.event.WindowListener;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.ObjectInput;

import java.io.ObjectInputStream;

import java.io.ObjectOutput;

import java.io.ObjectOutputStream;

import java.net.URL;

import javax.swing.Box;

import javax.swing.BoxLayout;

import javax.swing.ComboBoxModel;

import javax.swing.Icon;

import javax.swing.ImageIcon;

import javax.swing.JComboBox;

import javax.swing.JEditorPane;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextField;

import javax.swing.event.HyperlinkEvent;

import javax.swing.event.HyperlinkListener;

p {

  new Browser;

}

sclass Browser extends JFrame {

  protected JEditorPane m_browser;

  protected MemComboBox m_locator = new MemComboBox();

  public Browser() {

    super("HTML Browser");

    setSize(500, 300);

    getContentPane().setLayout(new BorderLayout());

    JPanel p = new JPanel();

    p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));

    p.add(new JLabel("Address"));

    m_locator.load("addresses.dat");

    BrowserListener lst = new BrowserListener();

    m_locator.addActionListener(lst);

    MemComboAgent agent = new MemComboAgent(m_locator);

    p.add(m_locator);

    getContentPane().add(p, BorderLayout.NORTH);

    m_browser = new JEditorPane();

    m_browser.setEditable(false);

    // XXX m_browser.addHyperlinkListener(lst);

    JScrollPane sp = new JScrollPane();

    sp.getViewport().add(m_browser);

    getContentPane().add(sp, BorderLayout.CENTER);

    WindowListener wndCloser = new WindowAdapter() {

      public void windowClosing(WindowEvent e) {

        m_locator.save("addresses.dat");

      }

    };

    addWindowListener(wndCloser);

    setVisible(true);

    m_locator.grabFocus();

  }

  class BrowserListener implements ActionListener, HyperlinkListener {

    public void actionPerformed(ActionEvent evt) {

      //printStackTrace();

      String sUrl = (String) m_locator.getSelectedItem();

      if (sUrl == null || sUrl.length() == 0 )

        return;

      sUrl = addHTTP(sUrl);

      BrowserLoader loader = new BrowserLoader(sUrl);

      loader.start();

    }

    public void hyperlinkUpdate(HyperlinkEvent e) {

      URL url = e.getURL();

      if (url == null )

        return;

      BrowserLoader loader = new BrowserLoader(url.toString());

      loader.start();

    }

  }

  class BrowserLoader extends Thread {

    protected String m_sUrl;

    public BrowserLoader(String sUrl) {

      m_sUrl = sUrl;

    }

    public void run() {

      setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));

      try {

        URL source = new URL(m_sUrl);

        m_browser.setPage(source);

        m_locator.add(m_sUrl);

      } catch (Exception e) {

        JOptionPane.showMessageDialog(Browser.this, "Error: "

            + e.toString(), "Warning", JOptionPane.WARNING_MESSAGE);

      }

      setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));

    }

  }

}

sclass MemComboAgent extends KeyAdapter {

  protected JComboBox m_comboBox;

  protected JTextField m_editor;

  public MemComboAgent(JComboBox comboBox) {

    m_comboBox = comboBox;

    m_editor = (JTextField) comboBox.getEditor().getEditorComponent();

    m_editor.addKeyListener(this);

  }

  public void keyReleased(KeyEvent e) {

    char ch = e.getKeyChar();

    if (ch == KeyEvent.CHAR_UNDEFINED || Character.isISOControl(ch))

      return;

    int pos = m_editor.getCaretPosition();

    String str = m_editor.getText();

    if (str.length() == 0)

      return;

    for (int k = 0; k < m_comboBox.getItemCount(); k++) {

      String item = m_comboBox.getItemAt(k).toString();

      if (item.startsWith(str)) {

        m_editor.setText(item);

        m_editor.setCaretPosition(item.length());

        m_editor.moveCaretPosition(pos);

        break;

      }

    }

  }

}

sclass MemComboBox extends JComboBox {

  public static final int MAX_MEM_LEN = 30;

  public MemComboBox() {

    super();

    setEditable(true);

  }

  public void add(String item) {

    if (eq(getItemAt(0), item)) ret;

    //main.print("MemComboBox.add " + item);

    //printStackTrace();

    removeItem(item);

    insertItemAt(item, 0);

    setSelectedItem(item);

    if (getItemCount() > MAX_MEM_LEN)

      removeItemAt(getItemCount() - 1);

  }

  public void load(String fName) {

    try {

      if (getItemCount() > 0)

        removeAllItems();

      File f = getProgramFile(fName);

      if (!f.exists())

        return;

      FileInputStream fStream = new FileInputStream(f);

      ObjectInput stream = new ObjectInputStream(fStream);

      Object obj = stream.readObject();

      if (obj instanceof ComboBoxModel)

        setModel((ComboBoxModel) obj);

      stream.close();

      fStream.close();

    } catch (Exception e) {

      System.err.println("Serialization error: " + e.toString());

    }

  }

  public void save(String fName) {

    try {

      FileOutputStream fStream = new FileOutputStream(getProgramFile(fName));

      ObjectOutput stream = new ObjectOutputStream(fStream);

      stream.writeObject(getModel());

      stream.flush();

      stream.close();

      fStream.close();

    } catch (Exception e) {

      System.err.println("Serialization error: " + e.toString());

    }

  }

}