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Google Web Toolkit 2 Application Development Cookbook

Chapter 2. Creating Home Page with Panels and Menus

In this chapter, we will cover:

Creating the home page layout class
Adding the banner
Adding menus
Creating the left-hand sidebar
Creating the right-hand sidebar
Creating the main content panel
Creating the footer
Using HomePage instance in EntryPoint

Key benefits

Create impressive, complex browser-based web applications with GWT 2

Learn the most effective ways to create reports with parameters, variables, and subreports using iReport

Create Swing-like web-based GUIs using the Ext GWT class library

Develop applications using browser quirks, Javascript,HTML scriplets from scratch

Part of Packt's Cookbook series: Each recipe is a carefully organized sequence of instructions to complete the task as efficiently as possible

Description

GWT 2 radically improves web experience for users by using existing Java tools to build no-compromise AJAX for any modern browser. It provides a solid platform so that other great libraries can be built on top of GWT. Creating web applications efficiently and making them impressive, however, is not as easy as it sounds. Writing web applications for multiple browsers can be quite tasking. In addition, building, reusing, and maintaining large JavaScript code bases and AJAX components can be difficult. GWT 2 Application Development Cookbook eases these burdens by allowing developers to quickly build and maintain complex yet highly efficient JavaScript front-end applications in the Java programming language . It tells you how to make web experience all the more thrilling and hassle free, using various tools along with GWT SDK.This book starts with developing an application from scratch. Right from creating the layout of the home page to home page elements including left and right sidebars, to placing tree like navigational menu, menu bars, tool bars, banners, footers are discussed with examples. You will see how to create forms using the Ext GWT library widgets and handle different types of events. Then you will move on to see how to design a database for sales processing systems and learn to create the database in MySQL with the help of easy–to-follow recipes. One of the interesting topics of this book is using JPA in GWT. Using the JPA object in GWT is a challenge. To use them perfectly, a mechanism to convert the JPA object into plain object and vice versa is required. You will see recipes to use entity classes, entity managers, and controller classes in GWT application. You will efficiently create reports with parameters, variables and subreports, and get the report output in both HTML and PDF format using real-world recipes. You will then learn to configure the GlassFish server to deploy a GWT application with database. Finally, learn how to trace speed and improve perfomance in web applications using tracing techniques.

What you will learn

Set up and configure GWT SDK, GlassFish server, MySQL server, NetBeans, GWT4NB, Ext GWT , iReport plugins for developing the business application in GWT

Design a database for sales processing system in MySQL, back up and restore the database

Identify business entities and the relationships and constraints among them

Handle events such clicking on buttons, typing in text fields, selecting items in a combo box, selecting radios, selecting menus, and selecting toolbar icons

Manage entities using entity framework through Java Persistence API (JPA)

Use iReport for any GWT application to get the output of the reports in both HTML and PDF format

Create Graphical User Interface (GUI) for accepting user input and display information to the user using Ext GWT

Control communication between the server and client using GWTRPC mechanism

Create a WAR file for GWT application and deploy it in Glassfish server

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Paperback book shipped to your preferred address

Redeem a companion digital copy on all Print orders

Access this title in our online reader with advanced features

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Google Web Toolkit 2 Application Development Cookbook

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George Papat Mar 22, 2011

I am not a java expert nor a Google Web Toolkit expert but a student with an assignment on designing a GWT application from scratch.This book although is not a cook book as the title says it offers an overview of setting up a gwt environment creating an application from scratch , establishing a relationship with a database and offering a medium (JPA) so that the database and the application to communicate. There maybe several books out there that are proficient in databases or JPA or GWT or on Google web toolkit and its Widgets or on sophisticated libraries for RIA applications but this book covers a little bit of all in just a few pages. This is a brillinat crash tutorial for someone new to Google web toolkit world and wants to get an overview of what is out there without being lost with more advanced topics. The Code is brilliantly small and easy to understand as EXT library is used. This book can be finished with ease in just 1-2 days.People that dont know what Netbeans is, what Glassfish server is , how MySQL integrate with IDE's such as Netbeans ,how JPA can be used in a Google project ,how to create simple widgets and Event handlers, will gain even more benefit out of this book while trying to build a Google web toolkit project.After this book is read anyone can step into the spesific of his/her assignments by getting a more advanced book that may cover spesific topics.For me this is the best book for a rich gwt tutorial so that is why i m giving it a 5 star rate, as a Starter book.If the same author brings another cookbook with more advanced stuff on GWT , I ll buy it instantly.

Amazon Verified review

Y2i Mar 02, 2011

To better understand the value of this book it is worth giving a short introduction to GWT.GWT is a toolkit for web applications development that embraces existing web technologies such as HTML, CSS, JavaScript, and AJAX. The toolkit provides a very convenient development model. A GWT application is developed in Java language using standard IDEs such as Eclipse, NetBeans or IDEA. These IDEs allow easy modification and refactoring of the application code. At the same time Java compiler provides strong type checking that eliminates a lot of type-related errors that would result if programming were done in JavaScript. When deploying the application, GWT compiler translates Java code into HTML, CSS, and JavaScript so that the resulting application does not require installation of any plug-ins on the client side.A huge GWT's value-add is a set of Java widgets, layout panels and communication-related classes that makes the web application development similar to the development of regular desktop applications and eliminates a lot incompatibility problems between different browsers. This browser-independence simplifies creating various widget libraries, with ExtGWT library being undoubtedly one of the most popular.GWT does not enforce any server-side implementation: a GWT application can be served by Apache, IIS, Weblogic, Tomcat, Jetty, GlassFish, GAE, etc., but GWT provides convenience packages for servlet-based deployment. These include service-oriented GWT-RPC and data-oriented GWT Request Factory. In addition, a GWT application can use any persistence layer backed up by any database store.This book requires no prior GWT knowledge nor any significant experience with the above-mentioned technologies. Yet it quickly bootstraps and makes the reader aware of how to develop rich full-featured GWT applications. In the process the book introduces and explains specific tools and technologies: NetBeans IDE, GlassFish application server, JPA persistence layer, and MySQL database. The book shows the reader how to install and configure the development environment and required software, how to design user interfaces using ExtGWT widgets and panels, how to handle application events, how to communicate with the server using GWT-RPC, how to design the database schema and JPA persistence units and, finally, how to deploy the application. As a bonus, it explains how to use iReport to generate reports and how to use Speed Tracer to tackle performance bottlenecks. The book, unfortunately, does not cover GWT Request Factory but only because the Request Factory was introduced after the book was released.The book is very methodical. At the beginning of each chapter it states a set of goals, and then leads the reader through a series of steps to accomplish the stated goals and produce tangible results. If you want to quickly immerse yourself into GWT development and various technologies surrounding modern web applications, this book is definitely worth reading.

migui May 24, 2012

Hello,I was programming in GWT for 1 year and I have bought this book because I was interesting to know some new tricks and new patterns to integrate GWT with JPA. Unfortunately this book it was not that I expected. The book is like a tutorial "for dummies". It is perfect for people that have not idea about GWT, DB, JPA or how to install MySQLServer or Netbeans. Also if you have never programming, this book can guide you to do a GWT application, but if you are buying this book to know new "guru" GWT tricks I would not recommend it. I give it 3 starts because the book says that it is also recommend for "experts".

Bryan Basham Mar 23, 2011

The main problem with this book is a *lack* of coherency. It is supposed to be about "GWT 2" development but I found only two chapters that were actually about GWT (and not even about version 2 which has huge improvements of GWT v1). The most of the chapters are about tangential aspects of webapp development: database design, JPA, reporting, deployment. These are important but should *not* be the focus of a book on GWT 2; they should have been appendices. The other GUI related chapters deal with GXT (AKA: Ext for GWT) which granted is a GWT library but you really don't learn much about GWT from this library.I was hoping to learn about UI layout and binding, creating custom widgets, effective debugging techniques, I18N support, GWT's MVP model, unit testing, history mgmt, and other new GWT 2 features: editors, cell widgets, and so on.This book was a disappointment and a missed opportunity by PACKT.

mP Mar 11, 2011

I was lucky enough to be asked to review this publication.Firstly i believe the title of the book is a little misleading or perhaps not as potentially useful in describing what it contains and hopes to convey to the developer type scanning for something to help them in their endeavours.- Not really a cookbook, because its not filled with recipes. Recipies are typically a few pages (less is better) with very brief overview, code samples and other useful links etc. This book contains chapters of related topics not recipies.- Most of the UI chapters are about GXT with very little about GWT and its in built widgets themselves. I can imagine many developer types looking at the book really should know this is the case as this might and probably will affect their decision to purchase.- Not a single recipe or page discusses UI Binder which given its broad reach and usefulness should have at the very least a few recipes.- As previously mentioned the UI discusses pretty much limit themselves to GXT which unfortunately has an incompatible event system which means knowledge of it is not readily transferrable to work involving GWT widgets exclusively.- No real sample or code that one can cut and paste.- The book title should really be mention GXT given how many chapters it is mentioned. GXT has various associated costs and licensing issues and this is not always a choice.- Not really a recipe book, more of a selection of useful topics related to GWT using GXT.- Not really useful as a reference as each topic is covered in very basic manner without pointing out any gotchas that would be helpful if one wished to use the book as a reference.If a friend of mine borrowed me the book, i would probably read it on the train, but i would not buy it.

Google Web Toolkit 2 Application Development Cookbook: Over 70 simple but incredibly effective practical recipes to develop web applications using GWT with JPA , MySQL and i Report

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