CSE446 Software Quality Management

1. CSE446 Software Quality Management Orhan Başar Evren Spring 2014 Yazılım ve Uyguluma Geliştirme Yöneticisi

2. 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

3. 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 @ManagedBeanannotation • JSF 2.2 allows to be registered by CDI using @Named annotation CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

4. 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

5. 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. • @CustomScopedand@NoneScoped CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

6. JSF – Managed Property @ManagedProperty annotation is used to inject other managed beans or resources from JSF container. @ManagedBean public class HelloBean { @ManagedProperty(“#{otherBean}”) private OtherBean other; // need getters and setters etc… } CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

7. JSF – Page Navigation • Implicit Navigation : Navigate to pages from directly JSF pages or from managed beans • 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

8. JSF – Implicit Navigation <h:form> <h:commandButton action="page2" value="Move to page2.xhtml" /> </h:form> OR public String gotoToPage2() { return "page2"; } CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

9. JSF – Conditional Navigation Rule <navigation-rule> <from-view-id>hello.xhtml</from-view-id> <navigation-case> <from-action>#{helloBean.doGreeting}</from-action> <from-outcome>success</from-outcome> <to-view-id>greeting.xhtml</to-view-id> </navigation-case> </navigation-rule> OR <navigation-case> <if>#{helloBean.somevalueeq 1}</if> <to-view-id>greeting.xhtml</to-view-id> <redirect/> </navigation-case> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

10. 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

11. JSF – Resource Bundles Define in faces-config.xml file as following: <application> <locale-config> <default-locale>en</default-locale> <supported-locale>tr</supported-locale> </locale-config> <resource-bundle> <base-name>resources.messages</base-name> <var>msg</var> </resource-bundle> </application> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

12. JSF – Resource Bundles message_tr.propertiestext file : greeting = Merhaba greetuser = Merhaba {0} example.with.dot= noktakullanımına örnek From xhtml page: xmlns:f="http://java.sun.com/jsf/core" <f:viewlocale=“tr"> <h:outputText value=“#{msg.greeting}”/> <h:outputText value=“#{msgs[‘example.with.dot’]}”/> <h:outputFormat value=“#{msg.greetuser}”> <f:param value=“#{helloBean.username}”> </h:outputFormat> </f:view> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

13. 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

14. JSF – Common Tags Facelet Tags xmlns:ui="http://java.sun.com/jsf/facelets Used for templates: • <ui:insert> • <ui:define> • <ui:include> • <ui:param> • <ui:remove> • <ui:composition> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

15. JSF – Common Tags HTML Tags xmlns:h="http://java.sun.com/jsf/html Used for HTML output: • <h:outputText> • <h:inputText> • <h:inputTextarea> • <h:selectBooleanCheckbox> • <h:graphicImage> • <h:panelGrid> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

16. JSF – Common Tags Core Tags xmlns:f="http://java.sun.com/jsf/core Core JSF functionality: • <f:view> • <f:ajax> • <f:param> • <f:convertNumber> • <f:validateLength> • <f:actionListener> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

17. 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 • <h:commandButtonid=“clickbtn” value=“Click Me” /> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

18. 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 • <h:commandButtononclick=“alert(‘test’);”/> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

19. JSF – Tag Examples - ui:composition dialog.xhtml: <ui:composition> <h:outputText value=“#{message}” /> <h:commandButton type="submit" value=“OK" /> <h:commandButton type="reset" value=“Cancel" /> </ui:composition> dialog.taglib.xml: <facelet-taglib> <namespace>http://cse446.yeditepe.edu.tr/sample</namespace> <tag> <tag-name>dialog</tag-name> <source>com/components/dialog.xhtml</source> </tag> </facelet-taglib> web.xml: <context-param> <param-name>javax.faces.FACELETS_LIBRARIES</param-name> <param-value>/WEB-INF/dialog.taglib.xml</param-value> </context-param> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

20. JSF – Tag Examples - ui:composition page.xhtml: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:ytu="http://cse446.yeditepe.edu.tr/sample"> <h:body> <ytu:dialog message="Hello"></ytu:dialog> </h:body> </html> Output: CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

21. 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

22. 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<UIComponent> componenets = FacesContext.getCurrentInstance().getViewRoot().getChildren(); CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş