0 Replies Latest reply on Oct 18, 2010 1:50 PM by Sandeep Gowda

    Custom tag for Marquee in JSF

    Sandeep Gowda Newbie

      I am trying to develop Custom tag for Marquee,since my requirement is to display some dynamic data.

      below is the code i am using, please let me known any changes required.

       

      regards

      Sandeep. please help me

       

       

      package customtags;

      import java.io.IOException;

      import javax.faces.component.UIComponentBase;
      import javax.faces.context.FacesContext;
      import javax.faces.context.ResponseWriter;

      /**
        * @author SandeepGowda
        * 
        */
      public class Marquee extends UIComponentBase {
          private String value;

          public String getValue() {
             return value;
          }

          public void setValue(String value) {
             this.value = value;
          }

          public String getFamily() {
             // TODO Auto-generated method stub
             return null;
          }

          public void encodeBegin(FacesContext context) throws IOException {
             ResponseWriter writer = context.getResponseWriter();
             writer.startElement("marquee", this);
             writer.write(getValue());
             writer.endElement("marquee");
          }
      }

      /**
        * 
        */
      package customtags;

      import javax.faces.component.UIComponent;
      import javax.faces.webapp.UIComponentELTag;

      /**
        * @author SandeepGowda
        * 
        */
      public class MarqueeTag extends UIComponentELTag {

          private String marquee;

          public String getMarquee() {
             return marquee;
          }

          public void setMarquee(String marquee) {
             this.marquee = marquee;
          }

          public String getComponentType() {
             // TODO Auto-generated method stub
             return "marqueecomp";
          }

          public String getRendererType() {
             // TODO Auto-generated method stub
             return null;
          }

          protected void setProperties(UIComponent component) {
             super.setProperties(component);
             Marquee marqComp = (Marquee) component;
             if (marquee != null) {
                marqComp.setValue(marquee);
             }
          }
      }
      faces config:
      <component>
             <display-name>marqueecomp</display-name>
             <component-type>marqueecomp</component-type>
             <component-class>customtags.Marquee</component-class>
          </component>

      marquee.tld
      <?xml version="1.0" encoding="UTF-8"?>
      <taglib xmlns="http://java.sun.com/xml/ns/javaee"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd"
          version="2.1">
          <tlib-version>1.0</tlib-version>
          <short-name>marqueecomp</short-name>
          <uri>http://tags.org/marquee</uri>
          <tag>
             <name>marqueecomp</name>
             <tag-class>customtags.MarqueeTag</tag-class>
             <body-content>empty</body-content>
             <attribute>
             <name>value</name>
             <required>false</required>
             <rtexprvalue>true</rtexprvalue>
             </attribute>
          </tag>
      </taglib>


      marquee.taglib.xml-- in classpath/lib
      <?xml version="1.0"?>
      <!DOCTYPE facelet-taglib PUBLIC
         "-//Sun Microsystems, Inc.//DTD Facelet Taglib 1.0//EN"
         "http://java.sun.com/dtd/facelet-taglib_1_0.dtd">

      <facelet-taglib>
           <namespace>http://tags.org/marquee</namespace>
           <tag>
               <tag-name>marqueecomp</tag-name>
               <component>
                   <component-type>customtags.MarqueeTag</component-type>
               </component>
           </tag>
      </facelet-taglib>

      xhtml page

      <html xmlns="http://www.w3.org/1999/xhtml"
          xmlns:ui="http://java.sun.com/jsf/facelets"
          xmlns:h="http://java.sun.com/jsf/html"
          xmlns:f="http://java.sun.com/jsf/core" xml:lang="en" lang="en"
          xmlns:a4j="http://richfaces.org/a4j"
          xmlns:rich="http://richfaces.org/rich" xmlns:mycomp="http://tags.org/marquee">

      <head>
      <title>DEBTDOC Home Page</title>
      <meta http-equiv="keywords" content="enter,your,keywords,here" />
      <meta http-equiv="description"
          content="A short description of this page." />
      <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
      <link rel="stylesheet" type="text/css" href="../css/common.css"></link>
      <script language="javascript" src="../script/common.js"></script>
      </head>
      <body>
      <f:view>
          <h:form>
             <div align="center" style="position: relative;"><h:outputText
                style="text-align:center;color:red;font-size:20px;font-style:italic;font-weight: bold;"
                value="Customer Tracking System"></h:outputText></div>
             <h:panelGrid style="width:700px;" columns="1">
                <f:verbatim>
                   <mycomp:marqueecomp value="hello World"></mycomp:marqueecomp>
                </f:verbatim>
                <mycomp:marqueecomp value="hello World"></mycomp:marqueecomp>