Demonstrates three different styles when to commit changes : Data Binding « Swing Components « Java
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.
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* o Redistributions in binary form must reproduce the above copyright notice,
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*
* 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"
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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 (1, 1));
builder.addTitle("Value", cc.xy (5, 1));
builder.addLabel("Key Typed", cc.xy (1, 3));
builder.add(onKeyTypedField, cc.xy (3, 3));
builder.add(onKeyTypedLabel, cc.xy (5, 3));
builder.addLabel("Focus Lost", cc.xy (1, 5));
builder.add(onFocusLostField, cc.xy (3, 5));
builder.add(onFocusLostLabel, cc.xy (5, 5));
builder.addLabel("Apply Pressed", cc.xy (1, 7));
builder.add(onApplyField, cc.xy (3, 7));
builder.add(onApplyLabel, cc.xy (5, 7));
builder.add(buildButtonBar(), cc.xyw(1, 9, 5));
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);
}
}
}
binding.zip( 506 k)
