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Tapestry 5: Building Web Applications

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Tapestry 5: Building Web Applications

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Tapestry 5: Building Web Applications
Jan, 2008 | 280 pages
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Table of Contents (17 chapters)
Tapestry 5
Tapestry 5
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
Preface
Preface
Foreword
Foreword
Free Chapter
1
Introduction to Tapestry
Introduction to Tapestry
Why is Tapestry Special?
Is Tapestry the Savior in the World of Java Web Development?
Summary
2
Creating Your Working Environment
Creating Your Working Environment
Install a JDK
Install Maven
Install NetBeans
Installing Eclipse
Installing Tomcat
Configuring the Project in Eclipse
Summary
3
The Foundations of Tapestry
The Foundations of Tapestry
Tapestry Application is a Set of Interactive Pages
Page Template and Page Class
Using Expansions
Using Components
Passing a Value Between Pages
What Can be Returned From an Event Handler
Tapestry Pages are Pooled
Making a Page Field Persistent
Using Page Activation Context
Different Ways of Defining Components
Structuring the Application
Creating and Using an Application State Object
Was an ASO Already Instantiated?
Summary
4
Simple Components
Simple Components
Celebrity Collector Project
The Auxiliary Classes
TextField, PasswordField and PageLink
Limiting Access to a Page
Loop, Output and DirectLink
Another Use of PageLink Component
Radio and RadioGroup
Using Enumerations for Radio Component Values
Prefixes: prop and literal
The If and Checkbox Components
Submit Component
More Than One Submit Button
Select Component
Configuring an Application State Object
Summary
5
Advanced Components
Advanced Components
Grid Component
Tweaking the Grid
Changing the Column Titles
Using GridDataSource
BeanEditForm Component
Tweaking BeanEditForm
DateField Component
Changing the Styles of Grid and BeanEditForm
FCKEditor Component
Summary
6
User Input Validation
User Input Validation
Adding Validation to Components
Validators
Providing Custom Error Messages
Handling Validation-Related Form Events
Cross-Form Validation
BeanEditForm Validation
Summary
7
Internationalization and Localization
Internationalization and Localization
Internationalization on the Java Platform
Internationalization in Tapestry
Creating and Using Message Catalogs
Providing a German Message Catalog
Switching Locale
Internationalization of Images
Using Localized Templates
Other Examples of Internationalization
Summary
8
Creating Custom Components
Creating Custom Components
How to Create a Tapestry 5 Component
Creating the Border Component
Adding a Navigation Menu
Using a Parameter
Unleashing the Power of Select Component
Creating an OptionModel
Creating a SelectModel
Creating a ValueEncoder
Selecting a Celebrity
DateInput Component
Making DateInput a Field
Adding Simple Validation
Creating a Universal Locale Switcher
Creating a Custom Service
Creating a Library of Custom Components
Summary
The Basics of Java for the Web
The Basics of Java for the Web
The Standard Structure of a Java Web Application
The Basics of the Deployment Descriptor
WAR Files Basics
About Java-Enabled Servers
Creating a Real Data Source with db4o
Creating a Real Data Source with db4o
Preparing the Database
The Main Operations
The Final Strokes
Where to Go Next
Where to Go Next

Using Components

First of all, let's add another page to have more space for experimenting. Right click on the Start.tml file in the Project Explorer or Projects view, depending on which IDE you are using. Click on Copy, in the context menu. Then right click on the WebContent folder in Eclipse or Web Pages folder in NetBeans and then click on Paste. Rename the new page to be... well, let it be Another.tml. Change the contents of the new page template to look like this: 

<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">
<head>
<title>Another Page</title>
</head>
<body>
<h1>Another Page</h1>
<p>
<t:PageLink t:page="Start">Back to the Start page</t:PageLink>
</p>
</body>
</html>

Next, right click on the com.packtpub.t5first.pages package and add a new Java class, name it Another. Let this class remain empty for the moment. Finally, change the PageLink component in the Start.tml file to point...

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