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

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

import java.util.HashMap;
import java.util.List;
import org.apache.click.Control;
import org.apache.click.ActionResult;
import org.apache.click.ControlRegistry;
import org.apache.click.ajax.DefaultAjaxBehavior;
import org.apache.click.control.Field;
import org.apache.click.control.Form;
import org.apache.click.control.Submit;
import org.apache.click.control.TextField;
import org.apache.click.element.Element;
import org.apache.click.element.JsImport;
import org.apache.click.element.JsScript;
import org.apache.click.examples.page.BorderPage;

/**
 * Simple Form Ajax Demo example using the jQuery JavaScript library.
 */
public class SimpleFormAjaxPage extends BorderPage {

    private Form form = new Form("form");
    private Field nameFld = new TextField("name");
    private Submit saveBtn = new Submit("save");

    public SimpleFormAjaxPage() {
        addControl(form);
        form.add(nameFld);
        form.add(saveBtn);

        saveBtn.addBehavior(new DefaultAjaxBehavior() {

            @Override
            public ActionResult onAction(Control source) {
                // Return a success response
                // Form data can be saved here
                return new ActionResult("Hello " + nameFld.getValue(), ActionResult.HTML);
            }
        });

        // NOTE: we explicitly register the Form as an Ajax target so that the
        // Fom#onProcess method can be invoked. The save button's Behavior will
        // still handle the request though
        ControlRegistry.registerAjaxTarget(form);

        // Instead of explicitly registering the Form, the same can be achived by
        // adding an empty Behavior to the Form so that Click register the Form
        // as an Ajax target:
        // form.addBehavior(new DefaultAjaxBehavior());
    }

    /**
     * Add the jQuery and page JavaScript template to the Page HEAD elements.
     */
    @Override
    public List<Element> getHeadElements() {
        if (headElements == null) {
            headElements = super.getHeadElements();
            headElements.add(new JsImport("/assets/js/jquery-1.4.2.js"));
            headElements.add(new JsScript("/ajax/form/simple-form-ajax.js", new HashMap()));
        }
        return headElements;
    }
}