Book Image

PrimeFaces Cookbook

Book Image

PrimeFaces Cookbook

Overview of this book

PrimeFaces is the de facto standard in the Java web development. PrimeFaces is a lightweight library with one jar, zero-configuration, and no required dependencies. You just need to download PrimeFaces, add the primefaces-{version}.jar to your classpath and import the namespace to get started. This cookbook provides a head start by covering all the knowledge needed for working with PrimeFaces components in the real world. "PrimeFaces Cookbook" covers over 100 effective recipes for PrimeFaces 3.x which is a leading component suite to boost JSF applications. The book's range is wide‚Äí from AJAX basics, theming, and input components to advanced usage of datatable, menus, drag & drop, and charts. It also includes creating custom components and PrimeFaces Extensions.You will start with the basic concepts such as installing PrimeFaces, configuring it, and writing a first simple page. You will learn PrimeFaces' theming concept and common inputs and selects components. After that more advanced components and use cases will be discussed. The topics covered are grouping content with panels, data iteration components, endless menu variations, working with files and images, using drag & drop, creating charts, and maps. The last chapters describe solutions for frequent, advanced scenarios and give answers on how to write custom components based on PrimeFaces and also show the community-driven open source project PrimeFaces Extension in action.
Table of Contents (17 chapters)
PrimeFaces Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Controlling form submission by DefaultCommand


The Enter key makes form submission so easy that users always tend to use it. The most intuitive way is that the user can enter some text or make some changes to the existing text and then hit the Enter key to submit the form. But what for command component will submit the form if we have more than one of them? Browsers, especially IE, behave differently here. The DefaultCommand component solves this problem by normalizing the command (for example, button or link) that submits the form when the Enter key is hit.

In this recipe, we will discuss p:defaultCommand in detail. We will implement a p:selectOneMenu for dynamic selection of the command button used for form submission when the Enter key is hit.

How to do it...

We intend to save the chosen command button used for form submission in a backing bean. To achieve this, we need a p:selectOneMenu with listed command buttons (their IDs) and an attached p:ajax. Such an ajaxified p:selectOneMenu component...