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Primefaces Theme development
Primefaces Theme development

Primefaces Theme development: Create, package, and customize stunning themes using PrimeFaces

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Profile Icon Andy Bailey Profile Icon Sudheer Jonna
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$38.99
Paperback Nov 2015 224 pages 1st Edition
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$9.99 $29.99
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Arrow left icon
Profile Icon Andy Bailey Profile Icon Sudheer Jonna
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Paperback Nov 2015 224 pages 1st Edition
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Renews at $19.99p/m

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Primefaces Theme development

Chapter 2. Introducing PrimeFaces Themes

In order to be able to experience using JSF and the PrimeFaces library, we are going to continue our work from the last chapter and add to the PFThemes project. By the end of this chapter, you will have a deeper understanding of how even a simple JSF application can be greatly enriched by using PrimeFaces components in it. In particular, I will demonstrate how PrimeFaces provides a powerful themes framework.

In this chapter, we will cover the following topics:

  • The difference between standard JSF and PrimeFaces components
  • Adding additional themes to the project
  • Changing the theme used by the project
  • Displaying the name of the theme used by the project
  • Adding some classes to allow us to use the ThemeSwitcher component
  • Changing web.xml so that it supports dynamic themes
  • Creating a Facelets Template and adding a menu for navigation and a ThemeSwitcher to it
  • Creating a page that uses this template and adding some components to it
  • Adding a link to this...

The difference between standard JSF and PrimeFaces components

Standard JSF components such as h:inputText result in simple HTML being emitted into the page. To demonstrate what I mean, you need to perform the following steps:

  1. Create a JSF page in your project in a new folder called chapter2 and name the page difference.xhtml.
  2. To create the folder, right-click on the Web Pages folder in the Project navigator and move the mouse over the New item. Select the Folder option, name the folder chapter2, and click on Finish.
  3. Then, right-click on the chapter2 folder, move the mouse over the New item, and select JSF Page. Name the page difference and click on Finish.

Tip

NetBeans will add the appropriate file ending for you. So, if you type in difference.xhtml, the file will actually be named difference.xhtml.xhtml. So you don't need to add the extension explicitly.

We then add the following inside the h:body tag:

<h:form id="mainform">
  <h:panelGrid id="maintable" columns...

Adding additional PrimeFaces themes

In this section, we are going to turn to the power of Maven to add additional themes. We can do this because the PrimeFaces team has made them available as dependencies. The only difference here is that they haven't made them available on Maven Central Repository. Instead, they are available on PrimeFaces Maven repository.

Note

Did you know that anyone can set up a Maven repository for themselves and provide libraries to the public? Doing this means not having to wait to get your work added to Maven Central Repository.

In order to get Maven to point to the PrimeFaces repository, we need to add an entry in the project's pom.xml file.

Open the pom.xml file, which will be found in the project's Project Files folder. Under the name tag (highlighted in the following code), add everything in the repositories tag and save the file:

  <name>PFThemes</name>
  <repositories>
    <repository>
      <id>prime-repo</id&gt...

The PrimeFaces ThemeSwitcher component

PrimeFaces provides a component called ThemeSwitcher, which allows us to change themes dynamically without having to refresh the page that we are on. In order to get this to work, we need to create some classes known as JavaBeans, which provide things that the ThemeSwitcher needs in order to work its magic.

We are going to add some new packages to our project and then create our Beans. Perform the following steps to add new packages to our project:

  1. Right-click on the project in the Project view and select New….
  2. You may have to scroll down a bit or even select the Other… option, but we are looking for the Java option. This displays a list of things that we can create, and we want a package.
  3. We add a package with the name com.andyba.pfthemes.session keeping the other values as they are.
  4. Then, add another package named com.andyba.pfthemes.themes.

Now, in order to create our first Bean, perform the following steps:

  1. Select New… by right-clicking...

Creating the CurrentTheme Bean

Right-click on the session package, this time click on New…, and select the JSF Managed Bean option again.

Note

Did you notice that NetBeans remembers the menu options you chose recently and moves them to the top of the options list? NetBeans is fantastic.

Name the class as CurrentTheme and change Scope to Session. The source code is once again opened automatically for us and it looks like this:

package com.andyba.pfthemes.session;

*/
import java.io.Serializable;
import javax.inject.Named;
import javax.enterprise.context.SessionScoped;

/**
 *
 * @author Andy_2
 */
@ManagedBean
@SessionScoped
public class CurrentTheme implements 
Serializable {

  /**
    * Creates a new instance of CurrentTheme
  */
  public CurrentTheme() {
  }
}

There is a new annotation, @SessionScoped, which needs to be explained now:

@SessionScoped: A session-scoped Bean is one that is created each time a user visits the application for the first time and lives for as long as the...

Extending the ThemeService Bean

In order to get the ThemeSwitcher to work, we need to provide a list of theme names that ThemeSwitcher uses to offer the user a choice of themes. We will do this in the ThemeService Bean as an extension to the services it provides.

Note

As the Bean is application scoped, there is only one instance of it during the lifetime of the application. Thus, we are saving valuable resources by doing so.

We will add a new property to the Bean in a manner that is similar to how we added the theme property to the CurrentTheme Bean. The completely filled out Add Property dialog box is shown in the following screenshot:

Extending the ThemeService Bean

The themes property is an array because it will never be modified at runtime. Hence, it is a read-only property and hence the final keyword.

Place the cursor after private final String[] themes = but before ;. Then, add the following code to initialize the array. The added code is highlighted for you:

    private final String[] themes = {"afterdark"...

The difference between standard JSF and PrimeFaces components


Standard JSF components such as h:inputText result in simple HTML being emitted into the page. To demonstrate what I mean, you need to perform the following steps:

  1. Create a JSF page in your project in a new folder called chapter2 and name the page difference.xhtml.

  2. To create the folder, right-click on the Web Pages folder in the Project navigator and move the mouse over the New item. Select the Folder option, name the folder chapter2, and click on Finish.

  3. Then, right-click on the chapter2 folder, move the mouse over the New item, and select JSF Page. Name the page difference and click on Finish.

Tip

NetBeans will add the appropriate file ending for you. So, if you type in difference.xhtml, the file will actually be named difference.xhtml.xhtml. So you don't need to add the extension explicitly.

We then add the following inside the h:body tag:

<h:form id="mainform">
  <h:panelGrid id="maintable" columns="2">
  <h:outputLabel...

Adding additional PrimeFaces themes


In this section, we are going to turn to the power of Maven to add additional themes. We can do this because the PrimeFaces team has made them available as dependencies. The only difference here is that they haven't made them available on Maven Central Repository. Instead, they are available on PrimeFaces Maven repository.

Note

Did you know that anyone can set up a Maven repository for themselves and provide libraries to the public? Doing this means not having to wait to get your work added to Maven Central Repository.

In order to get Maven to point to the PrimeFaces repository, we need to add an entry in the project's pom.xml file.

Open the pom.xml file, which will be found in the project's Project Files folder. Under the name tag (highlighted in the following code), add everything in the repositories tag and save the file:

  <name>PFThemes</name>
  <repositories>
    <repository>
      <id>prime-repo</id>
      <name...

The PrimeFaces ThemeSwitcher component


PrimeFaces provides a component called ThemeSwitcher, which allows us to change themes dynamically without having to refresh the page that we are on. In order to get this to work, we need to create some classes known as JavaBeans, which provide things that the ThemeSwitcher needs in order to work its magic.

We are going to add some new packages to our project and then create our Beans. Perform the following steps to add new packages to our project:

  1. Right-click on the project in the Project view and select New….

  2. You may have to scroll down a bit or even select the Other… option, but we are looking for the Java option. This displays a list of things that we can create, and we want a package.

  3. We add a package with the name com.andyba.pfthemes.session keeping the other values as they are.

  4. Then, add another package named com.andyba.pfthemes.themes.

Now, in order to create our first Bean, perform the following steps:

  1. Select New… by right-clicking on the themes package...

Creating the CurrentTheme Bean


Right-click on the session package, this time click on New…, and select the JSF Managed Bean option again.

Note

Did you notice that NetBeans remembers the menu options you chose recently and moves them to the top of the options list? NetBeans is fantastic.

Name the class as CurrentTheme and change Scope to Session. The source code is once again opened automatically for us and it looks like this:

package com.andyba.pfthemes.session;

*/
import java.io.Serializable;
import javax.inject.Named;
import javax.enterprise.context.SessionScoped;

/**
 *
 * @author Andy_2
 */
@ManagedBean
@SessionScoped
public class CurrentTheme implements 
Serializable {

  /**
    * Creates a new instance of CurrentTheme
  */
  public CurrentTheme() {
  }
}

There is a new annotation, @SessionScoped, which needs to be explained now:

@SessionScoped: A session-scoped Bean is one that is created each time a user visits the application for the first time and lives for as long as the user session...

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Key benefits

  • • Build PrimeFaces themes that meet the industry standards
  • • Customize your themes for mobile web applications with PrimeFaces Mobile
  • • A precise, example-oriented guide to help you create interesting themes using the PrimeFaces tools

Description

Developing stunning themes for web applications has never been easier! PrimeFaces delivers a powerful set of features that enables JSF developers to create and customize awesome themes on the web. It is very easy to use because it comes as a single JAR file and requires no mandatory XML configuration. With more than 30 out-of-the-box themes, jQuery integration, a mobile UI toolkit, Ajax Push technology, and much more, PrimeFaces takes JSF application development to a whole new level! This book is a hands-on example-rich guide to creating and customizing PrimeFaces themes using available tools. Beginning with creating a JSF project and integrating the PrimeFaces library, this book will introduce you to the features of theme components, how these are structured, and how PrimeFaces uses JQuery UI to apply a theme to your application. You will learn to examine and change the CSS rules and get creative by setting standard icons and adding new icons to them. You will use a combination of JavaScript and CSS to enhance your application with help of scheduler component and go on to adapt and package your custom theme so that it is compatible with the Resource Manager. Finally, you will explore PrimeFaces mobile apps, ensuring themes are compatible with your mobile applications best practices for theme design.

Who is this book for?

If you are a Web Designer who wants to create and modify PrimeFaces themes then this book is for you. Basic knowledge of JSF, CSS, and HTML is assumed.

What you will learn

  • • Use Maven to create JSF Projects
  • • Create a custom theme using JQuery UI tools
  • • Package your theme for distribution and use your PrimeFaces-based web applications as drop in libraries.
  • • Develop additional dynamic look and feel elements that themes do not already supply
  • • Apply look and feel elements dynamically to views without causing page refreshes
  • • Reduce code repetition by applying page templates to your JSF project
Estimated delivery fee Deliver to United States

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Nov 03, 2015
Length: 224 pages
Edition : 1st
Language : English
ISBN-13 : 9781783988686
Vendor :
PrimeFaces
Languages :
Tools :

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Publication date : Nov 03, 2015
Length: 224 pages
Edition : 1st
Language : English
ISBN-13 : 9781783988686
Vendor :
PrimeFaces
Languages :
Tools :

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Table of Contents

12 Chapters
1. To Skin an App Chevron down icon Chevron up icon
2. Introducing PrimeFaces Themes Chevron down icon Chevron up icon
3. jQuery UI, ThemeRoller, and the Anatomy of a Theme Chevron down icon Chevron up icon
4. A PrimeFaces inputText Component in Detail Chevron down icon Chevron up icon
5. Let's Get Creative Chevron down icon Chevron up icon
6. Icons Chevron down icon Chevron up icon
7. Dynamic Changes – a Working Example Chevron down icon Chevron up icon
8. Mobile Web Apps Chevron down icon Chevron up icon
9. The Final Touches Chevron down icon Chevron up icon
10. Theme Design Best Practices Chevron down icon Chevron up icon
11. Premium Themes and Layouts, and Third-party Converter Tools Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon
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