import java.awt.Component;
import java.awt.Container;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.SpringLayout;


public class LoginForm extends JPanel {
	private static final String LOGIN_COMMAND = "Log in";
	private JLabel labUserName;
	private JTextField tfUserName;
	private JLabel labPassword;
	private JPasswordField tfPassword;
	private JButton bnLogin;

	public LoginForm(AbstractAction loginAction) {
		SpringLayout layout = new SpringLayout();
		setLayout(layout);

		labUserName = new JLabel("User name");
		tfUserName = new JTextField(15);
		labPassword = new JLabel("Password");
		tfPassword = new JPasswordField(15);

		bnLogin = new JButton(loginAction);
		bnLogin.setDefaultCapable(true);

		String command = (String) loginAction.getValue(Action.ACTION_COMMAND_KEY);

		if ((command == null) || (command = command.trim()).equals("")) {
			command = LOGIN_COMMAND;
		}

		bnLogin.setText(command);

		add(labUserName);
		add(tfUserName);
		add(labPassword);
		add(tfPassword);
		add(bnLogin);

		layout.putConstraint(SpringLayout.WEST, labUserName, 10,
			SpringLayout.WEST, this);
		layout.putConstraint(SpringLayout.NORTH, labUserName, 25,
			SpringLayout.NORTH, this);
		layout.putConstraint(SpringLayout.NORTH, tfUserName, 25,
			SpringLayout.NORTH, this);
		layout.putConstraint(SpringLayout.WEST, tfUserName, 20,
			SpringLayout.EAST, labUserName);

		layout.putConstraint(SpringLayout.WEST, labPassword, 10,
			SpringLayout.WEST, this);
		layout.putConstraint(SpringLayout.NORTH, labPassword, 50,
			SpringLayout.NORTH, this);
		layout.putConstraint(SpringLayout.NORTH, tfPassword, 50,
			SpringLayout.NORTH, this);
		layout.putConstraint(SpringLayout.WEST, tfPassword, 20,
			SpringLayout.EAST, labUserName);

		layout.putConstraint(SpringLayout.NORTH, bnLogin, 75,
			SpringLayout.NORTH, this);
		layout.putConstraint(SpringLayout.WEST, bnLogin, 0, SpringLayout.WEST,
			labUserName);
		// Set constraints for Container itself
		layout.putConstraint(SpringLayout.SOUTH, this, 20, SpringLayout.SOUTH,
			bnLogin);
		layout.putConstraint(SpringLayout.EAST, this, 5, SpringLayout.EAST,
			tfPassword);
	}

	/**
	 * Get the contents of the user name field
	 *
	 * @return The value of the user name field
	 */
	public String getUserName() {
		return tfUserName.getText();
	}

	/**
	 * Get the password from the password field
	 *
	 * @return The password as char[]
	 */
	public char[] getPassword() {
		return tfPassword.getPassword();
	}
}