Source Viewer : WEB-INF/classes/org/apache/click/examples/page/ajax/AjaxFallbackPage.java

package org.apache.click.examples.page.ajax;

import org.apache.click.ActionListener;
import org.apache.click.Control;
import org.apache.click.ActionResult;
import org.apache.click.ajax.DefaultAjaxBehavior;
import org.apache.click.control.ActionLink;
import org.apache.click.examples.page.BorderPage;

/**
 * Demonstrates how to handle an AJAX request and fallback to a non-AJAX request
 * in case JavaScript is disabled.
 */
public class AjaxFallbackPage extends BorderPage {

    private static final long serialVersionUID = 1L;

    private ActionLink link = new ActionLink("link", "here");

    public AjaxFallbackPage() {
        link.setId("link-id");

        addControl(link);

        // If JavaScript is enabled, the AjaxBehavior will be called
        link.addBehavior(new DefaultAjaxBehavior() {

            @Override
            public ActionResult onAction(Control source) {
                // Formatted date instance that will be added to the
                String now = format.currentDate("MMM, yyyy dd HH:MM:ss");

                String msg = "AjaxBehavior <tt>onAction()</tt> method invoked at: " + now;
                // Return an action result containing the message
                return new ActionResult(msg, ActionResult.HTML);
            }
        });

        // If JavaScript is disabled, the ActionListener will be called instead
        link.setActionListener(new ActionListener() {

            public boolean onAction(Control source) {
                // Formatted date instance that will be added to the
                String now = format.currentDate("MMM, yyyy dd HH:MM:ss");

                String msg = "ActionListener <tt>onAction()</tt> method invoked at: " + now;
                // Return an action result containing the message
                addModel("msg", msg);
                return true;
            }
        });
    }
}