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IS-907 Java EE

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IS-907 Java EE

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IS-907 Java EE

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  1. IS-907 Java EE Templating

  2. Templates • When an application contains several pages with similar structure, duplication of code can be avoided through the use of templates • The template defines the structure of the page with named parts • The template may specify default content for each part • Facelets which use the template must specify the named parts • Default content is used for unspecified parts Even Åby Larsen (even.larsen@uia.no) IS-102 Introduksjon

  3. Defining templates • The template is an ordinary facelet, except ui:insert tags are used to specify replacable parts: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:ui="http://java.sun.com/jsf/facelets"> <h:head> <title><ui:insert name="title" /></title> <h:outputStylesheet library="css" name="is907.css" /> </h:head> <h:body> <div id="heading" class="heading"> <ui:insert name="heading”/> </div> ... Even Åby Larsen (even.larsen@uia.no) IS-102 Introduksjon

  4. Defining default content • The ui:include tag is used to include default content from other files: <div id="sidebar" class="menu"> <ui:insert name="sidebar"> <ui:include src="/views/common/sidebar.xhtml" /> </ui:insert> </div> Even Åby Larsen (even.larsen@uia.no) IS-102 Introduksjon

  5. Using templates <html xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:ui="http://java.sun.com/jsf/facelets"> <h:head> <title>IGNORED</title> </h:head> <h:body> <ui:composition template="/views/templates/layout.xhtml"> <ui:define name="title">IS-907 Netshop - Price List</ui:define> <ui:define name="content"> <h1>Price List</h1> ... </ui:define> </ui:composition> Even Åby Larsen (even.larsen@uia.no) IS-102 Introduksjon

  6. Using templates • Facelets refer to templates with a ui:composition tag • and specify the parts with ui:define tags • Only the contents of the ui:composition tag are used • the rest of the file is ignored • the structure of the page is taken from the template • Included files (e.g. default parts) are treated the same way: • Only the contents of the ui:composition tag are used Even Åby Larsen (even.larsen@uia.no) IS-102 Introduksjon