AJAX ActionLink

ActionLink has the same AJAX capabilities as EventLink.
Refresh whole page - this ActionLink is not AJAX-enabled
Refresh only serverTime2 - this ActionLink is AJAX-enabled

serverTime1: Sat Nov 01 10:24:29 EST 2014
serverTime2: Sat Nov 01 10:24:29 EST 2014
References: ActionLink, Ajax and Zones, Zone, Request, @Inject, @InjectComponent.

Home

AjaxActionLink.tml


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!-- We need a doctype to allow us to use special characters like &nbsp; 
     We use a "strict" DTD to make IE follow the alignment rules. -->
     
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd">
<head>
    <link rel="stylesheet" type="text/css" href="${context:css/examples/js.css}"/>
</head>
<body>
    <h1>AJAX ActionLink</h1>

    <noscript class="js-required">
        ${message:javascript_required}
    </noscript>     

    ActionLink has the same AJAX capabilities as EventLink.

    <div class="eg">
        <a t:type="actionlink" t:id="refreshPage" href="#">Refresh whole page - this ActionLink is not AJAX-enabled</a><br/>
        <a t:type="actionlink" t:id="refreshZone" t:zone="time2Zone" href="#">Refresh only serverTime2 - this ActionLink is AJAX-enabled</a><br/><br/>

        serverTime1:  ${serverTime1}
        <t:zone t:id="time2Zone" id="time2Zone">
            serverTime2:  ${serverTime2}
        </t:zone>
    </div>

    References: 
    <a href="http://tapestry.apache.org/5.3/apidocs/org/apache/tapestry5/corelib/components/ActionLink.html">ActionLink</a>, 
    <a href="http://tapestry.apache.org/ajax-and-zones.html">Ajax and Zones</a>, 
    <a href="http://tapestry.apache.org/5.3/apidocs/org/apache/tapestry5/corelib/components/Zone.html">Zone</a>,
    <a href="http://tapestry.apache.org/5.3/apidocs/org/apache/tapestry5/services/Request.html">Request</a>, 
    <a href="http://tapestry.apache.org/5.3/apidocs/org/apache/tapestry5/ioc/annotations/Inject.html">@Inject</a>, 
    <a href="http://tapestry.apache.org/5.3/apidocs/org/apache/tapestry5/annotations/InjectComponent.html">@InjectComponent</a>.<br/><br/> 
    
    <a t:type="pagelink" t:page="Index" href="#">Home</a><br/><br/>
    
    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/pages/examples/ajax/AjaxActionLink.tml"/>
    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/pages/examples/ajax/AjaxActionLink.java"/>
    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/css/examples/js.css"/>
</body>
</html>

AjaxActionLink.java


package jumpstart.web.pages.examples.ajax;

import java.util.Date;

import org.apache.tapestry5.annotations.InjectComponent;
import org.apache.tapestry5.corelib.components.Zone;
import org.apache.tapestry5.ioc.annotations.Inject;
import org.apache.tapestry5.services.Request;

public class AjaxActionLink {

    // Generally useful bits and pieces

    @Inject
    private Request request;
    
    @InjectComponent
    private Zone time2Zone;

    // The code
    
    void onActionFromRefreshPage() {
        // Nothing to do - the page will call getTime1() and getTime2() as it renders.
    }

    // Isn't called if the link is clicked before the DOM is fully loaded. See
    // https://issues.apache.org/jira/browse/TAP5-1 .
    Object onActionFromRefreshZone() {
        // Here we can do whatever updates we want, then return the content we want rendered.
        return request.isXHR() ? time2Zone.getBody() : null;
    }

    public Date getServerTime1() {
        return new Date();
    }

    public Date getServerTime2() {
        return new Date();
    }
}

js.css


body            { font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; font-weight: normal; color: #333;
                    line-height: 17px; }
h1              { font-size: 26px; line-height: 20px; } /* For IE 7 */
form            { margin: 0; }

.eg             { margin: 20px 0; padding: 20px; color: #888; 
                    border: 1px solid #ddd; border-radius: 4px; -webkit-border-radius: 4px; -mox-border-radius: 4px; }

a               { text-decoration: none; color: #3D69B6; }
a:hover         { text-decoration: underline; }

/* For javascript examples. */
.js-required    { color: red; display: block; margin-bottom: 14px; }
.js-recommended { color: red; display: block; margin-bottom: 14px; }

.grid           { border-collapse: collapse; border-spacing: 0; border: 1px solid #dddddd; font-size: 13px; }
.grid tr.odd        { background-color: #f8f8f8; }
.grid tr:hover      { background-color: #eeeeee; }
.grid th        { padding: 3px 5px; text-align: left; width: 130px; border: 1px solid #dddddd; 
                    font-weight: normal; background-color: #eeeeee; 
                    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fbfbfb', endColorstr='#e4e4e4'); /* for IE */
                    background: -webkit-gradient(linear, left top, left bottom, from(#fbfbfb), to(#e4e4e4)); /* for webkit browsers */
                    background: -moz-linear-gradient(top, #fbfbfb, #e4e4e4); /* for firefox 3.6+ */ }
.grid td        { padding: 3px 5px; text-align:left; }