CSE446 S

OFTWARE

Q

UALITY

M

ANAGEMENT

Orhan Başar Evren Yazılım ve Uyguluma Geliştirme Yöneticisi Spring 2014

Today’s Overview

–

Quick Review of HTTP and Servlets

– JSF – (Part 2) • Managed Beans • Navigation • Resource Bundles • Common tags • UIComponents CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Managed Beans

– Managed bean is a regular java bean managed by JSF framework – It is the “Model” of user interface component – JSF 1.2 : Registered using xml file, such as faces-config.xml

– JSF 2.0 registered easily with @ManagedBean annotation – JSF 2.2 allows to be registered by CDI using @Named annotation CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Managed Beans

@ManagedBean annotation has two optional attributes : • name : reference name of the bean.

Default value: the name of the class • eager : flag to specify if the application scoped bean will be initialized on startup or on first request Default value: false @ManagedBean(name=“ Hello ”, eager= true ) CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Managed Beans - Scopes

– @RequestScoped : Bean lives as long as the HTTP request-response lives. (default) – @ViewScoped : Bean lives as long as user is interacting with the same JSF view – @SessionScoped : Bean lives as long as the HTTP session lives. – @ApplicationScoped : Bean lives as long as the web application lives. – @CustomScoped and @NoneScoped CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Managed Property

@ManagedProperty inject other managed beans or resources from JSF container.

annotation is used to } @ManagedBean public class HelloBean { @ManagedProperty (“ #{otherBean} ”) private OtherBean other; // need getters and setters etc… CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Page Navigation

–

Implicit Navigation

pages from directly JSF pages or from managed beans : Navigate to –

Conditional Navigation Rule:

Define the navigation rules with faces-config.xml file.

•

Form based rules

•

If – else rules

•

Redirect (and Forward)

CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Implicit Navigation

OR

} public String gotoToPage2() { return "page2"; CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Conditional Navigation Rule

hello.xhtml #{helloBean.doGreeting} success greeting.xhtml

OR

#{helloBean.somevalue eq 1} greeting.xhtml CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Resource Bundles

Resource bundles are used for text manipulation and Internationalization For better maintainability it is always recommended to put all text and messages into properties files.

CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Resource Bundles

Define in faces-config.xml file as following:

en tr resources.messages msg CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Resource Bundles

message_tr.properties text file : greeting = Merhaba greetuser = Merhaba {0} example.with.dot = nokta kullanımına örnek

From xhtml page:

xmlns:f="http://java.sun.com/jsf/core" CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Resource Bundles

Or from managed bean when needed:

@ManagedProperty (" #{msg} ") private ResourceBundle bundle; ...

String greetmsg = bundle.getString(”greeting”); … CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Common Tags

Facelet Tags

xmlns:ui="http://java.sun.com/jsf/facelets • • • • • •

Used for templates:

CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Common Tags

HTML Tags

xmlns:h="http://java.sun.com/jsf/html • • • • • •

Used for HTML output:

CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Common Tags

Core Tags

xmlns:f="http://java.sun.com/jsf/core • • • • • •

Core JSF functionality:

CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Common Tag Attributes

• • • • • • • Id : identifier for a component binding: reference to component instance rendered: flag to set rendering styleClass: css class name value: value of the component converter: converter class name required: flag to set requirement • id=“clickbtn” value=“Click Me” /> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

• • • • • •

JSF – DHTML Event Attributes

•

Allows to make JavaScript calls on specific events

onblur: element loses focus onchange : element’s value changes onclick: mouse clicked over the element onfocus : element receives focus onkeypress: key is pressed onsubmit : form is submitted • onclick=“alert(‘test’);”/> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Tag Examples - ui:composition

dialog.xhtml:

dialog.taglib.xml:

http://cse446.yeditepe.edu.tr/sample dialog com/components/dialog.xhtml

web.xml:

javax.faces.FACELETS_LIBRARIES /WEB-INF/dialog.taglib.xml CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – Tag Examples - ui:composition

page.xhtml:

Output:

CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF – UIComponent

• UIComponent is base class for all user interfaces components in JSF.

• UIComponent instances are organized into a component tree under a UIViewRoot • Can be accessed from FacesContext instance CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

•

JSF – UIComponent

UIComponent is base class for all user interfaces components in JSF.

• UIComponent instances are organized into a component tree under a UIViewRoot • Can be accessed from FacesContext instance • UIInput, UICommand, HtmlInputText, and many other…

List componenets = FacesContext.getCurrentInstance().getViewRoot().getChildren();

CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş