Demonstrates three different styles when to commit changes : Data Binding « Swing Components « Java

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Java » Swing Components » Data Binding 




Demonstrates three different styles when to commit changes
Demonstrates three different styles when to commit changes


/*
 * Copyright (c) 2002-2005 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. 
 *     
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 * 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, 
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 */

package com.jgoodies.binding.tutorial.basics;

import java.awt.event.ActionEvent;

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

import com.jgoodies.binding.PresentationModel;
import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.beans.Model;
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;

/**
 * Demonstrates three different styles when to commit changes:
 * on key typed, on focus lost, on OK/Apply pressed.
 * Therefore we bind 3 JTextFields to 3 String typed ValueModels
 * that honor the commit style. And we bind 3 JLabels directly 
 * to these ValueModels that display the current value.<p>
 
 * The ValueModels used in this example are requested from a
 * PresentationModel that adapts text properties of a TextBean.
 * This is just to demonstrate a consistent binding style.
 * The same techniques work with any ValueModel.
 *
 @author Karsten Lentzsch
 @version $Revision: 1.4 $
 
 @see com.jgoodies.binding.PresentationModel
 */

public class CommitStylesExample {
    
    /**
     * Holds a TextBean and vends ValueModels that adapt TextBean properties.
     * As an alternative to this PresentationModel we could use 3 ValueModels,
     * for example 3 ValueHolders, or any other ValueModel implementation.
     */
    private final PresentationModel presentationModel;

    private JTextComponent onKeyTypedField;
    private JTextComponent onFocusLostField;
    private JTextComponent onApplyField;
    private JLabel onKeyTypedLabel;
    private JLabel onFocusLostLabel;
    private JLabel onApplyLabel;
    private JButton applyButton;

 
    // 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 :: Commit Styles");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        CommitStylesExample example = new CommitStylesExample();
        JComponent panel = example.build();
        frame.getContentPane().add(panel);
        frame.pack();
        TutorialUtils.locateOnScreenCenter(frame);
        frame.setVisible(true);
    }
    
    
    // Instance Creation ******************************************************
    
    /**
     * Constructs the example with a PresentationModel on the a TextBean.
     */
    public CommitStylesExample() {
        this.presentationModel = new PresentationModel(new TextBean());
    }
    

    // Component Creation and Initialization **********************************

    /**
     * Creates,binds and configures the UI components.<p> 
     */
    private void initComponents() {
        onKeyTypedField = BasicComponentFactory.createTextField(
                presentationModel.getModel(TextBean.PROPERTYNAME_TEXT1)false);
        onKeyTypedLabel = BasicComponentFactory.createLabel(
                presentationModel.getModel(TextBean.PROPERTYNAME_TEXT1));

        onFocusLostField = BasicComponentFactory.createTextField(
                presentationModel.getModel(TextBean.PROPERTYNAME_TEXT2));
        onFocusLostLabel = BasicComponentFactory.createLabel(
                presentationModel.getModel(TextBean.PROPERTYNAME_TEXT2));

        onApplyField = BasicComponentFactory.createTextField(
                presentationModel.getBufferedModel(TextBean.PROPERTYNAME_TEXT3));
        onApplyLabel = BasicComponentFactory.createLabel(
                presentationModel.getModel(TextBean.PROPERTYNAME_TEXT3));

        applyButton = new JButton(new ApplyAction());
    }
    
    
    // Building ***************************************************************

    /**
     * Builds the pane.
     
     @return the built panel
     */
    public JComponent build() {
        initComponents();

        FormLayout layout = new FormLayout(
                "right:max(50dlu;pref), 3dlu, 50dlu, 9dlu, 50dlu",
                "p, 6dlu, p, 3dlu, p, 3dlu, p, 17dlu, p");
                
        PanelBuilder builder = new PanelBuilder(layout);
        builder.setDefaultDialogBorder();
        CellConstraints cc = new CellConstraints();

        builder.addTitle("Commit Style",    cc.xy (11));
        builder.addTitle("Value",           cc.xy (51));
        builder.addLabel("Key Typed",       cc.xy (13));
        builder.add(onKeyTypedField,        cc.xy (33));
        builder.add(onKeyTypedLabel,        cc.xy (53));
        builder.addLabel("Focus Lost",      cc.xy (15));
        builder.add(onFocusLostField,       cc.xy (35));
        builder.add(onFocusLostLabel,       cc.xy (55));
        builder.addLabel("Apply Pressed",   cc.xy (17));
        builder.add(onApplyField,           cc.xy (37));
        builder.add(onApplyLabel,           cc.xy (57));
        builder.add(buildButtonBar(),       cc.xyw(195));
        
        return builder.getPanel();
    }
    
    
    private JComponent buildButtonBar() {
        return ButtonBarFactory.buildRightAlignedBar(
                applyButton);
    }
    
    
    // Actions ****************************************************************
    
    private final class ApplyAction extends AbstractAction {
        
        private ApplyAction() {
            super("Apply");
        }
        
        public void actionPerformed(ActionEvent e) {
            presentationModel.triggerCommit();
        }
    }

    
    // Helper Class ***********************************************************

    /**
     * A simple bean that just provides three bound read-write text properties.
     */
    public static final class TextBean extends Model {
        
        // Names for the Bound Bean Properties ---------------------
        
        public static final String PROPERTYNAME_TEXT1 = "text1";
        public static final String PROPERTYNAME_TEXT2 = "text2";
        public static final String PROPERTYNAME_TEXT3 = "text3";
        
        private String text1;
        private String text2;
        private String text3;
        
        
        // Instance Creation ---------------------------------------
        
        private TextBean() {
            text1 = "Text1";
            text2 = "Text2";
            text3 = "Text3";
        }
        
        
        // Accessors -----------------------------------------------
        
        public String getText1() {
            return text1;
        }
        
        public void setText1(String newText1) {
            String oldText1 = getText1();
            text1 = newText1;
            firePropertyChange(PROPERTYNAME_TEXT1, oldText1, newText1);
        }

    
        public String getText2() {
            return text2;
        }
        
        public void setText2(String newText2) {
            String oldText2 = getText2();
            text2 = newText2;
            firePropertyChange(PROPERTYNAME_TEXT2, oldText2, newText2);
        }

    
        public String getText3() {
            return text3;
        }
        
        public void setText3(String newText3) {
            String oldText3 = getText3();
            text3 = newText3;
            firePropertyChange(PROPERTYNAME_TEXT3, oldText3, newText3);
        }
        
    }
    
    
}

           
       














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