PreferencesBrowser.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.test.uitools;

import java.awt.Point;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.util.Collection;
import java.util.prefs.Preferences;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.WindowConstants;

import org.eclipse.persistence.tools.workbench.utility.ClassTools;
import org.eclipse.persistence.tools.workbench.utility.HashBag;

/**
 * Browse the Java preferences, both "system" and "current user".
 * Optionally, a command-line argument can specify a particular
 * set of user preferences to browse.
 */
public class PreferencesBrowser {
    private Preferences preferences;
    Collection windows;
    private Point windowLocation;
    private static final int INIT_X = 300;
    private static final int INIT_Y = 300;

    public static void main(String[] args) throws Exception {
        new PreferencesBrowser().exec(args);
    }

    private PreferencesBrowser() {
        super();
        this.windows = new HashBag();
        this.windowLocation = this.calculateNewWindowLocation();
    }

    private Point calculateNewWindowLocation() {
        if ((this.windowLocation == null) || (this.windowLocation.x == INIT_X + 100)) {
            return new Point(INIT_X, INIT_Y);
        }
        return new Point(this.windowLocation.x + 20, this.windowLocation.y + 20);
    }

    private void exec(String[] args) throws Exception {
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        if ((args == null) || (args.length == 0)) {
            this.preferences = null;
        } else {
            this.preferences = Preferences.userRoot().node(args[0]);
        }
        this.openWindow();
    }

    void openWindow() {
        JFrame window = this.buildWindow();
        this.windows.add(window);
        window.setVisible(true);
    }

    private JFrame buildWindow() {
        JFrame frame = new JFrame(ClassTools.shortClassNameForObject(this));
        frame.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
        frame.addWindowListener(this.buildWindowListener());
        frame.getContentPane().add(this.buildPreferencesPanel(), "Center");
        frame.setLocation(this.windowLocation);
        this.windowLocation = this.calculateNewWindowLocation();
        frame.setSize(400, 400);
        return frame;
    }

    private WindowListener buildWindowListener() {
        return new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                Window window = e.getWindow();
                window.setVisible(false);
                window.dispose();
                PreferencesBrowser.this.windows.remove(window);
                if (PreferencesBrowser.this.windows.isEmpty()) {
                    System.exit(0);
                }
            }
        };
    }

    private JPanel buildPreferencesPanel() {
        PreferencesPanel panel = new PreferencesPanel(this.preferences);
        panel.addAction(this.buildNewWindowAction());
        return panel;
    }

    private Action buildNewWindowAction() {
        return new AbstractAction("New Window") {
            public void actionPerformed(ActionEvent event) {
                PreferencesBrowser.this.openWindow();
            }
        };
    }

}