HSQLDB example source code file (ConnectionDialogSwing.java)

This example HSQLDB source code file (ConnectionDialogSwing.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - HSQLDB tags/keywords

awt, box, box, connectiondialogswing, connectionsetting, connectionsetting, event, exception, gui, hashtable, jbutton, jcombobox, jdbc, jtextfield, jtextfield, setting, sql, string, string, swing

The HSQLDB ConnectionDialogSwing.java source code

/* Copyright (c) 2001-2008, The HSQL Development Group
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


package org.hsqldb.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Vector;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;

// sqlbob@users 20020325 - patch 1.7.0 - enhancements
// sqlbob@users 20020407 - patch 1.7.0 - reengineering
// weconsultants@users 20041109 - patch 1.8.0 - enhancements:
//              Added CommonSwing.errorMessage() to handle error messages
//              for errors so eliminated the mError JLable field and Status HorizontalBox.
//              Changed dispose on cancel to exit. If "Dup", "Restore" or Transer" needed ust
//              Press <OK> Conform toprogramming standards
//              Added spaces to "OK" button to make same size buttons
//              Added ":" to all labels as in databaseManager.java
//              Added: Added code from DatabaseManager to store connection settings

/**
 * Opens a connection to a database
 *
 * New class based on Hypersonic original
 *
 * @author dmarshall@users
 * @version 1.7.2
 * @since 1.7.0
 */
class ConnectionDialogSwing extends JDialog
implements ActionListener, ItemListener {

    /**
     * Comment for <code>serialVersionUID
     */
    private static final long serialVersionUID = 1L;
    private Connection        mConnection;
    private JTextField        mName, mDriver, mURL, mUser;
    private JPasswordField    mPassword;
    private String[][]        connTypes;
    private Hashtable         settings;
    private JButton           okCancel, clear;
    private JComboBox mSettingName =
        new JComboBox(loadRecentConnectionSettings());
    private static ConnectionSetting currentConnectionSetting = null;

    public static void setConnectionSetting(
            ConnectionSetting connectionSetting) {
        currentConnectionSetting = connectionSetting;
    }

    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() {

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

        // (weconsultants@users) New code
        Box extra = Box.createHorizontalBox();

        main.add(Box.createHorizontalStrut(10));
        main.add(Box.createHorizontalGlue());
        main.add(labels);
        main.add(Box.createHorizontalStrut(10));
        main.add(Box.createHorizontalGlue());
        main.add(controls);
        main.add(Box.createHorizontalStrut(10));
        main.add(Box.createVerticalGlue());
        main.add(extra);
        main.add(Box.createVerticalGlue());
        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(Box.createVerticalGlue());
        labels.add(createLabel("Recent Setting:"));
        labels.add(Box.createVerticalGlue());
        labels.add(createLabel("Setting Name:"));
        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));
        controls.add(Box.createVerticalGlue());

        // (weconsultants@users) New code
        mSettingName.setActionCommand("Select Setting");
        mSettingName.addActionListener(this);
        controls.add(mSettingName);
        controls.add(Box.createHorizontalGlue());

        // (weconsultants@users) New code
        mName = new JTextField();

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

        // (weconsultants@users) New code
        clear = new JButton("Clear Names");

        clear.setActionCommand("Clear");
        clear.addActionListener(this);
        buttons.add(clear);
        buttons.add(Box.createHorizontalGlue());
        buttons.add(Box.createHorizontalStrut(10));

        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));

        okCancel = new JButton("     Ok      ");

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

        okCancel = new JButton("  Cancel   ");

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

        JPanel jPanel = new JPanel();

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

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

        if (currentConnectionSetting != null) {
            mName.setText(currentConnectionSetting.getName());
            mDriver.setText(currentConnectionSetting.getDriver());
            mURL.setText(currentConnectionSetting.getUrl());
            mUser.setText(currentConnectionSetting.getUser());
            mPassword.setText(currentConnectionSetting.getPassword());
        }

        // (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);
        }

        setVisible(true);
    }

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

        ConnectionDialogSwing dialog = new ConnectionDialogSwing(owner,
            title);

//      Added: (weconsultants@users) Default LAF of Native
        try {

//            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            SwingUtilities.updateComponentTreeUI(dialog);
        } catch (Exception e) {
            CommonSwing.errorMessage(e);
        }

        dialog.create();

        return dialog.mConnection;
    }

    private static JLabel createLabel(String s) {

        JLabel l = new JLabel(s);

        return l;
    }

    // (weconsultants@users) New code
    public Vector loadRecentConnectionSettings() {

        Vector passSettings = new Vector();

        settings = new Hashtable();

        try {
            settings = ConnectionDialogCommon.loadRecentConnectionSettings();

            Iterator it = settings.values().iterator();

            passSettings.add(ConnectionDialogCommon.emptySettingName);

            while (it.hasNext()) {
                passSettings.add(((ConnectionSetting) it.next()).getName());
            }
        } catch (java.io.IOException ioe) {
            CommonSwing.errorMessage(ioe);
        }

        return (passSettings);
    }

    public void actionPerformed(ActionEvent ev) {

        String s = ev.getActionCommand();

        if (s.equals("ConnectOk") || (ev.getSource() instanceof JTextField)) {
            try {
                if (mURL.getText().indexOf('\u00AB') >= 0) {
                    throw new Exception("please specify db path");
                }

                mConnection =
                    createConnection(mDriver.getText(), mURL.getText(),
                                     mUser.getText(),
                                     new String(mPassword.getPassword()));

                // (weconsultants@users) New code
                if (mName.getText() != null
                        && mName.getText().trim().length() != 0) {
                    ConnectionSetting newSetting = new ConnectionSetting(
                        mName.getText(), mDriver.getText(), mURL.getText(),
                        mUser.getText(), new String(mPassword.getPassword()));

                    ConnectionDialogCommon.addToRecentConnectionSettings(
                        settings, newSetting);
                }

                dispose();
            } catch (SQLException e) {
                mConnection = null;

                CommonSwing.errorMessage(e, true);
            } catch (Exception e) {

                // Added: (weconsultants@users)
                CommonSwing.errorMessage(e);
            }

            // (weconsultants@users) New code
        } else if (s.equals("Select Setting")) {
            String            s2 = (String) mSettingName.getSelectedItem();
            ConnectionSetting setting = (ConnectionSetting) settings.get(s2);

            if (setting != null) {
                mName.setText(setting.getName());
                mDriver.setText(setting.getDriver());
                mURL.setText(setting.getUrl());
                mUser.setText(setting.getUser());
                mPassword.setText(setting.getPassword());
            }
        } else if (s.equals("ConnectCancel")) {
            dispose();

            // (weconsultants@users) New code
        } else if (s.equals("Clear")) {
            ConnectionDialogCommon.deleteRecentConnectionSettings();

            settings = new Hashtable();

            mSettingName.removeAllItems();
            mSettingName.addItem(ConnectionDialogCommon.emptySettingName);
            mName.setText(null);
        }
    }

    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]);
            }
        }
    }
}