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EditorBoundExample.java

/*
 * Copyright (c) 2002-2007 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o 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. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch 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 THE COPYRIGHT OWNER 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; 
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 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

package com.jgoodies.binding.tutorial.basics;

import java.awt.event.ActionEvent;

import javax.swing.*;
import javax.swing.text.JTextComponent;

import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.beans.PropertyConnector;
import com.jgoodies.binding.tutorial.Album;
import com.jgoodies.binding.tutorial.AlbumPresentationModel;
import com.jgoodies.binding.tutorial.TutorialUtils;
import com.jgoodies.forms.builder.PanelBuilder;
import com.jgoodies.forms.factories.ButtonBarFactory;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;

/**
 * Builds an editor with components bound to the domain object properties
 * using adapting ValueModels created by a PresentationModel.
 *
 * @author Karsten Lentzsch
 * @version $Revision: 1.12 $
 * 
 * @see com.jgoodies.binding.PresentationModel
 */

00058 public final class EditorBoundExample {
    
    /**
     * Holds the edited Album and vends ValueModels that adapt Album properties.
     */
00063     private final AlbumPresentationModel presentationModel;

    private JTextComponent titleField;
    private JTextComponent artistField;
    private JCheckBox      classicalBox;
    private JTextComponent composerField;
    private JButton        closeButton;

 
    // Launching **************************************************************
    
    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
        } catch (Exception e) {
            // Likely PlasticXP is not in the class path; ignore.
        }
        JFrame frame = new JFrame();
        frame.setTitle("Binding Tutorial :: Editor (Bound)");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        EditorBoundExample example = new EditorBoundExample();
        JComponent panel = example.buildPanel();
        frame.getContentPane().add(panel);
        frame.pack();
        TutorialUtils.locateOnOpticalScreenCenter(frame);
        frame.setVisible(true);
    }
    
    
    // Instance Creation ******************************************************
    
    /**
     * Constructs an editor on an Album example instance.
     */
00097     public EditorBoundExample() {
        this(Album.ALBUM1);
    }
    

    /**
     * Constructs an editor for an Album to be edited.
     * 
     * @param album    the Album to be edited
     */
00107     public EditorBoundExample(Album album) {
        this.presentationModel = new AlbumPresentationModel(album);
    }
    

    // Initialization *********************************************************

    /**
     * Creates, binds and configures the UI components. 
     * Changes are committed to the value models on focus lost.<p> 
     * 
     * The coding style used here is based on standard Swing components.
     * Therefore we can create and bind the components in one step.
     * And that's the purpose of the BasicComponentFactory class.<p>
     * 
     * If you need to bind custom components, for example MyTextField, 
     * MyCheckBox, MyComboBox, you can use the more basic Bindings class.
     * The code would then read:<pre>
     * titleField = new MyTextField();
     * Bindings.bind(titleField, 
     *               presentationModel.getModel(Album.PROPERTYNAME_TITLE));
     * </pre><p>
     * 
     * I strongly recommend to use a custom ComponentFactory, 
     * the BasicComponentFactory or the Bindings class. These classes 
     * hide details of the binding. 
     * So you better <em>not</em> write the following code:<pre>
     * titleField = new JTextField();
     * titleField.setDocument(new DocumentAdapter(
     *     presentationModel.getModel(Album.PROPERTYNAME_TITLE)));
     * </pre>  
     */
00139     private void initComponents() {
        titleField = BasicComponentFactory.createTextField(
                presentationModel.getModel(Album.PROPERTYNAME_TITLE));
        artistField = BasicComponentFactory.createTextField(
                presentationModel.getModel(Album.PROPERTYNAME_ARTIST));
        classicalBox = BasicComponentFactory.createCheckBox(
                presentationModel.getModel(Album.PROPERTYNAME_CLASSICAL), 
                "Classical");
        composerField = BasicComponentFactory.createTextField(
                presentationModel.getModel(Album.PROPERTYNAME_COMPOSER));
        closeButton = new JButton(new CloseAction());

        boolean composerEnabled = presentationModel.isComposerEnabled();
        composerField.setEnabled(composerEnabled);
    }
    

    /**
     * Registers a listener with the presentation model's "composerEnabled"
     * property to switch the composer field's enablement. For demonstration
     * purposes a listener is registered that writes changes to the console.
     */
00161     private void initEventHandling() {
        // Synchronize the composer field enablement with 'composerEnabled'.
        PropertyConnector.connect(
                composerField, "enabled",
                presentationModel, AlbumPresentationModel.PROPERTYNAME_COMPOSER_ENABLED);

        // Report changes in all bound Album properties.
        presentationModel.addBeanPropertyChangeListener(
                TutorialUtils.createDebugPropertyChangeListener());
    }
    
    
    // Building ***************************************************************

    /**
     * Builds and returns the panel.
     * 
     * @return the built panel
     */
00180     public JComponent buildPanel() {
        initComponents();
        initEventHandling();

        FormLayout layout = new FormLayout(
                "right:pref, 3dlu, 150dlu:grow",
                "p, 3dlu, p, 3dlu, p, 3dlu, p, 9dlu, p");
                
        PanelBuilder builder = new PanelBuilder(layout);
        builder.setDefaultDialogBorder();
        CellConstraints cc = new CellConstraints();

        builder.addLabel("Artist",     cc.xy (1, 1));
        builder.add(artistField,       cc.xy (3, 1));
        builder.addLabel("Title",      cc.xy (1, 3));
        builder.add(titleField,        cc.xy (3, 3));
        builder.add(classicalBox,      cc.xy (3, 5));
        builder.addLabel("Composer",   cc.xy (1, 7));
        builder.add(composerField,     cc.xy (3, 7));
        builder.add(buildButtonBar(),  cc.xyw(1, 9, 3));
        
        return builder.getPanel();
    }
    
    
    private JComponent buildButtonBar() {
        return ButtonBarFactory.buildRightAlignedBar(
                closeButton);
    }
    
    
    // Presentation Model *****************************************************
    
    /**
     * An Action that prints the current bean to the System console
     * before it exists the System.
     * 
     * Actions belong to the presentation model. However, to keep
     * this tutorial small I've chosen to reuse a single presentation model
     * for all album examples and so, couldn't put in different close actions.
     */
00221     private final class CloseAction extends AbstractAction {
        
        private CloseAction() {
            super("Close");
        }
        
        public void actionPerformed(ActionEvent e) {
            System.out.println(presentationModel.getBean());
            System.exit(0);
        }
    }

    
}

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