// $Id: DatabaseChoser.java 3525 2006-03-12 14:57:43Z coelho $

import java.awt.*;
import java.awt.event.*;
import java.net.InetAddress;

/** database choser dialog.
 * @author Fabien Coelho <fabien@coelho.net>
 */
public class DatabaseChoser
  extends Dialog
  implements ActionListener
{
  // ATTRIBUTS
  protected TextField driver;
  protected TextField drivername;
  protected TextField host;
  protected TextField port;
  protected TextField database;
  protected TextField username;
  protected TextField password;
  // protected TextField options;

  protected Button ok, cancel;
  protected boolean done;
  
  // CONSTRUCTOR
  /** full construtor. */
  public DatabaseChoser(Frame owner, String title, 
			String s_driver, String s_drivername,
			String s_database)
  {
    super(owner, title, true); // modal

    // this.setLayout(new GridLayout(0, 1));
    Panel labels = new Panel(new GridLayout(0,1));
    Panel texts = new Panel(new GridLayout(0,1));
    Panel buttons = new Panel(new GridLayout(1,2));

    this.add(labels,BorderLayout.WEST);
    this.add(texts,BorderLayout.CENTER);
    this.add(buttons,BorderLayout.SOUTH);

    driver = new TextField(s_driver, 30);
    drivername = new TextField(s_drivername, 10);

    // default hostname is current host
    String hostname = "";
    try { hostname = InetAddress.getLocalHost().getHostName(); }
    catch (Exception e) { System.err.println(e); }

    host = new TextField(hostname, 20);
    port = new TextField("", 10);
    database = new TextField(s_database, 20);
    username = new TextField(System.getProperty("user.name"), 20);
    password = new TextField("", 20);
    password.setEchoChar('*');

    labels.add(new Label("Driver", Label.RIGHT));
    texts.add(driver);

    labels.add(new Label("Driver name", Label.RIGHT));
    texts.add(drivername);

    labels.add(new Label("Host name", Label.RIGHT));
    texts.add(host);

    labels.add(new Label("Port number", Label.RIGHT));
    texts.add(port);

    labels.add(new Label("Database name", Label.RIGHT));
    texts.add(database);

    labels.add(new Label("User name", Label.RIGHT));
    texts.add(username);

    labels.add(new Label("Password", Label.RIGHT));
    texts.add(password);

    ok = new Button("Okay");
    cancel = new Button("Cancel");

    buttons.add(ok);
    buttons.add(cancel);

    password.addActionListener(this);
    ok.addActionListener(this);
    cancel.addActionListener(this);

    this.pack();
  }

  static protected final String 
    DEFAULT_TITLE = "Chose Database",
    DEFAULT_DRIVER_CLASS = "org.postgresql.Driver",
    DEFAULT_DRIVER_NAME = "postgresql",
    DEFAULT_DATABASE_NAME = "comics";

  public DatabaseChoser()
  {
     this(new Frame("")); // ...
  }

  public DatabaseChoser(Frame owner)
  {
    this(owner, DEFAULT_DATABASE_NAME);
  }

  public DatabaseChoser(Frame owner, String database)
  {
    this(owner, DEFAULT_TITLE, database);
  }

  public DatabaseChoser(Frame owner, String title, String database)
  {
    this(owner, title, DEFAULT_DRIVER_CLASS, DEFAULT_DRIVER_NAME, database);
  }

  // GRAPHICS
  public void actionPerformed(ActionEvent e)
  {
    done = e.getSource()!=cancel;
    this.setVisible(false);
  }

  // RESULTS
  public String getDriver()
  {
    return driver.getText();
  }

  public String getURL()
  {
    // is this generic enough?
    StringBuffer b = new StringBuffer("jdbc:");

    // I shoud have this from the Driver name?
    b.append(drivername.getText());
    b.append(":");
    if (!host.getText().equals(""))
    {
      b.append("//");
      b.append(host.getText());
      if (!port.getText().equals(""))
      {
	b.append(":");
	b.append(port.getText());
      }
    }
    b.append("/");
    b.append(database.getText());

    return b.toString();
  }

  public String getUserName()
  {
    return username.getText();
  }
  
  public String getPassword()
  {
    return password.getText();
  }
  
  public boolean isOkay()
  {
    return done;
  }

  // TEST
  static public void main(String[] args)
  {
    Frame f = new Frame();
    DatabaseChoser cd = new DatabaseChoser(f);
    cd.setVisible(true);
    if (cd.isOkay())
    {
      System.out.println("driver=" + cd.getDriver());
      System.out.println("url=" + cd.getURL());
      System.out.println("username=" + cd.getUserName());
      System.out.println("password=" + cd.getPassword());
    }
    else
    {
      System.out.println("canceled");
    }
    // clean
    f.dispose();
  }
}