<?xml version='1.0' encoding='UTF-8'?>
<chapter>
          <chapterinfo>
                    <keywordset>
                              <keyword>a4j:form</keyword>
                    </keywordset>
          </chapterinfo>
          <table>
                    <title>Component identification parameters </title>
                    <tgroup cols="2">
                              <thead>
                                        <row>
                                                  <entry>Name</entry>
                                                  <entry>Value</entry>
                                        </row>
                              </thead>
                              <tbody>
                                        <row>
                                                  <entry>component-type</entry>
                                                  <entry>org.ajax4jsf.Form</entry>
                                        </row>
                                        <row>
                                                  <entry>component-family</entry>
                                                  <entry>javax.faces.Form</entry>
                                        </row>
                                        <row>
                                                  <entry>component-class</entry>
                                                  <entry>org.ajax4jsf.component.html.AjaxForm</entry>
                                        </row>
                                        <row>
                                                  <entry>renderer-type</entry>
                                                  <entry>org.ajax4jsf.FormRenderer</entry>
                                        </row>
                              </tbody>
                    </tgroup>
          </table>

          <section>
                    <title>Creating on a page</title>
                    <para>Component definition on a page is similar to definition of the original
                              component from JSF HTML library. </para>
                    <para>
                              <emphasis role="bold">Example:</emphasis>
                    </para>
                    <programlisting role="XML"><![CDATA[<a4j:form>
       <h:panelGrid>
                    <h:commandButton value="Button" action="#{userBean.nameItMark}" />
       </h:panelGrid>
</a4j:form>
]]></programlisting>
          </section>
          <section>
                    <title>Creating the Component Dynamically Using Java</title>

                    <para>
                              <emphasis role="bold">Example:</emphasis>
                    </para>
                    <programlisting role="JAVA"><![CDATA[import org.ajax4jsf.component.html.AjaxForm;
...
AjaxForm myForm = new AjaxForm();
...]]></programlisting>
          </section>
          <section>
                    <title>Key attributes and ways of usage</title>
                    <para>The difference with the original component is that all hidden fields
                              required for command links are always rendered and it doesn't depend
                              on links rendering on the initial page. It solves the problem with
                              invalid links that weren't rendered on a page immediately, but after
                              some Ajax request.</para>
                    <para>Beginning with release 1.0.5 additional attributes that make this form
                              variant universal have appeared. </para>
                    <para> If <emphasis><property>&quot;ajaxSubmit&quot;</property>
                              </emphasis> attribute is true, it becomes possible to set Ajax
                              submission way for any components inside with the help of the javascript
                              <code>A4J.AJAX.Submit(...)</code>call. In this case, the <emphasis>
                                        <property>&quot;reRender&quot;</property>
                              </emphasis> attribute contains a list of Ids of components defined for
                              re-rendering. If you have <emphasis role="bold">
                                        <property>&lt;h:commandButton&gt;</property>
                              </emphasis> or <emphasis role="bold">
                                        <property>&lt;h:commandLink&gt;</property>
                              </emphasis> inside the form, they work as <emphasis role="bold">
                                        <property>&lt;a4j:commandButton&gt;</property>
                              </emphasis>. </para>
                    <para>
                              <emphasis role="bold">Example:</emphasis>
                    </para>
                    <programlisting role="XML"><![CDATA[<a4j:form id="helloForm" ajaxSubmit="true" reRender="table">
	...
	<t:dataTable id="table"... >
		...
	</t:dataTable>
	...
	<t:datascroller for="table"... >
		...
	</t:datascroller>
	...
</a4j:form
]]></programlisting>
                    <para>This example shows that in order to make <emphasis role="bold">
                                        <property>&lt;t:datascroller&gt;</property>
                              </emphasis> submissions to be Ajax ones it&apos;s required only to
                              place this <emphasis role="bold">
                                        <property>&lt;t:datascroller&gt;</property>
                              </emphasis> into <emphasis role="bold">
                                        <property>&lt;a4j:form&gt;</property>
                              </emphasis>. In the other case it is necessary to redefine renders for
                              its child links elements that are defined as <emphasis role="bold">
                                        <property>&lt;h:commandLink&gt;</property>
                              </emphasis> and can't be made Ajax ones with using e.g. <emphasis
                                        role="bold">
                                        <property>&lt;a4j:support&gt;</property>
                              </emphasis>. </para>
                    <para> With the help of <emphasis>
                                        <property>&quot;limitToList&quot;</property>
                              </emphasis> attribute you can limit areas, which are updated after the
                              responses. If <emphasis>
                                        <property>&quot;limitToList&quot;</property>
                              </emphasis> is true, only the reRender attribute is taken in account.
                              Therefore, if you use blocks of text wrapped with <emphasis
                                        role="bold">
                                        <property>&lt;a4j:outputPanel&gt;</property>
                              </emphasis> and <code>ajaxRendered= &quot;true&quot;</code>,
                              blocks of text are ignored. </para>
                    <para> Information about the <emphasis>
                                        <property>&quot;process&quot;</property>
                              </emphasis> attribute usage you can find <link linkend="process"
                              >here</link>. </para>
          </section>
          <section>
                    <title>Relevant resources links</title>
                    <para>
                              <ulink
                                        url="http://livedemo.exadel.com/richfaces-demo/richfaces/form.jsf?c=form"
                                        >Here</ulink> you can see the example of <emphasis
                                        role="bold">
                                        <property>&lt;a4j:form&gt;</property>
                              </emphasis> usage and sources for the given example. </para>
          </section>
</chapter>
