connectiondialogswing.java

一个用java写的开源的数据库系统

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 * All rights reserved.
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 * modification, are permitted provided that the following conditions are met:
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 * list of conditions and the following disclaimer, including earlier
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 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
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package org.hsqldb.util;

import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import javax.swing.*;
import javax.swing.border.*;

// sqlbob@users 20020325 - patch 1.7.0 - enhancements
// sqlbob@users 20020407 - patch 1.7.0 - reengineering

/**
 * Opens a connection to a database
 *
 * @version 1.7.0
 */
class ConnectionDialogSwing extends JDialog
implements ActionListener, ItemListener {

    private Connection     mConnection;
    private JTextField     mDriver, mURL, mUser, mError;
    private JPasswordField mPassword;
    private String         connTypes[][];

    public static Connection createConnection(String driver, String url,
            String user, String password) throws Exception {

        Class.forName(driver).newInstance();

        return DriverManager.getConnection(url, user, password);
    }

    ConnectionDialogSwing(JFrame owner, String title) {
        super(owner, title, true);
    }

    private void create() {

        CommonSwing.setDefaultColor();

        JButton b;
        Box     main     = Box.createHorizontalBox();
        Box     labels   = Box.createVerticalBox();
        Box     controls = Box.createVerticalBox();
        Box     buttons  = Box.createHorizontalBox();
        Box     whole    = Box.createVerticalBox();
        Box     status   = Box.createHorizontalBox();

        main.add(Box.createHorizontalGlue());
        main.add(labels);
        main.add(Box.createHorizontalStrut(10));
        main.add(Box.createHorizontalGlue());
        main.add(controls);
        main.add(Box.createHorizontalGlue());
        whole.add(Box.createVerticalGlue());
        whole.add(Box.createVerticalStrut(10));
        whole.add(main);
        whole.add(Box.createVerticalGlue());
        whole.add(Box.createVerticalStrut(10));
        whole.add(buttons);
        whole.add(Box.createVerticalGlue());
        whole.add(Box.createVerticalStrut(10));
        whole.add(status);
        whole.add(Box.createVerticalStrut(10));
        whole.add(Box.createVerticalGlue());
        labels.add(Box.createVerticalGlue());
        labels.add(createLabel("Type:"));
        labels.add(Box.createVerticalGlue());
        labels.add(createLabel("Driver"));
        labels.add(Box.createVerticalGlue());
        labels.add(createLabel("URL"));
        labels.add(Box.createVerticalGlue());
        labels.add(createLabel("User:"));
        labels.add(Box.createVerticalGlue());
        labels.add(createLabel("Password:"));
        labels.add(Box.createVerticalGlue());
        labels.add(Box.createVerticalStrut(10));

        // Now the 2nd column which is the controls box:
        controls.add(Box.createVerticalGlue());

        JComboBox types = new JComboBox();

        connTypes = ConnectionDialogCommon.getTypes();

        for (int i = 0; i < connTypes.length; i++) {
            types.addItem(connTypes[i][0]);
        }

        types.addItemListener(this);
        controls.add(types);
        controls.add(Box.createVerticalGlue());

        mDriver = new JTextField(connTypes[0][1]);

        mDriver.addActionListener(this);
        controls.add(mDriver);

        mURL = new JTextField(connTypes[0][2]);

        mURL.addActionListener(this);
        controls.add(mURL);
        controls.add(Box.createVerticalGlue());

        mUser = new JTextField("sa");

        mUser.addActionListener(this);
        controls.add(mUser);
        controls.add(Box.createVerticalGlue());

        mPassword = new JPasswordField("");

        mPassword.addActionListener(this);
        controls.add(mPassword);
        controls.add(Box.createVerticalGlue());
        controls.add(Box.createVerticalStrut(10));

        // The button bar
        buttons.add(Box.createHorizontalGlue());
        buttons.add(Box.createHorizontalStrut(10));

        b = new JButton("Ok");

        b.setActionCommand("ConnectOk");
        b.addActionListener(this);
        buttons.add(b);
        getRootPane().setDefaultButton(b);
        buttons.add(Box.createHorizontalGlue());
        buttons.add(Box.createHorizontalStrut(20));

        b = new JButton("Cancel");

        b.setActionCommand("ConnectCancel");
        b.addActionListener(this);
        buttons.add(b);
        buttons.add(Box.createHorizontalGlue());
        buttons.add(Box.createHorizontalStrut(10));

        // Now the status line
        mError = new JTextField("");

        mError.setEditable(false);
        status.add(Box.createHorizontalGlue());
        status.add(mError);
        status.add(Box.createHorizontalGlue());

        JPanel jp = new JPanel();

        jp.setBorder(new EmptyBorder(10, 10, 10, 10));
        jp.add("Center", whole);
        getContentPane().add("Center", jp);
        doLayout();
        pack();

        Dimension d    = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension size = getSize();

        // (ulrivo): full size on screen with less than 640 width
        if (d.width >= 640) {
            setLocation((d.width - size.width) / 2,
                        (d.height - size.height) / 2);
        } else {
            setLocation(0, 0);
            setSize(d);
        }

        show();
    }

    public static Connection createConnection(JFrame owner, String title) {

        ConnectionDialogSwing dialog = new ConnectionDialogSwing(owner,
            title);

        dialog.create();

        return dialog.mConnection;
    }

    private static JLabel createLabel(String s) {

        JLabel l = new JLabel(s);

        return l;
    }

    public void actionPerformed(ActionEvent ev) {

        String s = ev.getActionCommand();

        if (s.equals("ConnectOk") || (ev.getSource() instanceof JTextField)) {
            try {
                mConnection =
                    createConnection(mDriver.getText(), mURL.getText(),
                                     mUser.getText(),
                                     new String(mPassword.getPassword()));

                dispose();
            } catch (Exception e) {
                e.printStackTrace();
                mError.setText(e.toString());
            }
        } else if (s.equals("ConnectCancel")) {
            dispose();
        }
    }

    public void itemStateChanged(ItemEvent e) {

        String s = (String) e.getItem();

        for (int i = 0; i < connTypes.length; i++) {
            if (s.equals(connTypes[i][0])) {
                mDriver.setText(connTypes[i][1]);
                mURL.setText(connTypes[i][2]);
            }
        }
    }
}