plugins/example/widget/example/ExampleAjaxScreens.xml

<?xml version="1.0" encoding="UTF-8"?>
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<screens xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns="http://ofbiz.apache.org/Widget-Screen" xsi:schemaLocation="http://ofbiz.apache.org/Widget-Screen http://ofbiz.apache.org/dtds/widget-screen.xsd">

    <screen name="AjaxExample">
        <section>
            <actions>
                <set field="headerItem" value="AjaxExample"/>
                <set field="titleProperty" value="PageTitleFindExample"/>
                <set field="exampleCtx" from-field="parameters"/>
            </actions>
            <widgets>
                <decorator-screen name="main-decorator" location="${parameters.mainDecoratorLocation}">
                    <decorator-section name="body">
                        <section>
                            <condition>
                                <if-has-permission permission="EXAMPLE" action="_VIEW"/>
                            </condition>
                            <widgets>
                                <container style="h1"><label>${uiLabelMap[titleProperty]}</label></container>
                                <section>
                                    <condition>
                                        <if-compare field="javaScriptEnabled" value="true" operator="equals"/>
                                    </condition>
                                    <widgets/>
                                    <fail-widgets>
                                        <container style="button-bar"><label>${uiLabelMap.ExampleAjaxIntro}</label></container>
                                    </fail-widgets>
                                </section>
                                <container id="ListExamplesAjax">
                                    <include-screen name="ListExampleFormOnly"/>
                                </container>
                                <container style="h2"><label>${uiLabelMap.ExampleNewExample}</label></container>
                                <container id="EditExampleAjax">
                                    <include-screen name="CreateExampleFormOnly"/>
                                </container>
                            </widgets>
                            <fail-widgets>
                                <label style="h3">${uiLabelMap.ExampleViewPermissionError}</label>
                            </fail-widgets>
                        </section>
                    </decorator-section>
                </decorator-screen>
            </widgets>
        </section>
    </screen>

    <screen name="ListExampleFormOnly">
        <section>
            <condition>
                <if-has-permission permission="EXAMPLE" action="_VIEW"/>
            </condition>
            <actions>
                <!-- NOTE: these are needed because this may be run as a top level screen and would have no decorator -->
                <property-map resource="ExampleUiLabels" map-name="uiLabelMap" global="true"/>
                <property-map resource="CommonUiLabels" map-name="uiLabelMap" global="true"/>
            </actions>
            <widgets>
                <include-grid name="ListExamplesAjax" location="component://example/widget/example/ExampleForms.xml"/>
            </widgets>
        </section>
    </screen>

    <screen name="CreateExampleFormOnly">
        <section>
            <condition>
                <if-has-permission permission="EXAMPLE" action="_VIEW"/>
            </condition>
            <actions>
                <!-- these are only needed so that when groovy evaluates use-when attributes these will exist and not cause an error -->
                <property-map resource="ExampleUiLabels" map-name="uiLabelMap" global="true"/>
                <property-map resource="CommonUiLabels" map-name="uiLabelMap" global="true"/>
                <set field="exampleId" from-field="parameters.exampleId"/>
                <entity-one entity-name="Example" value-field="ajaxExample"/>
            </actions>
            <widgets>
                <include-form name="EditExampleBackgroundSubmit" location="component://example/widget/example/ExampleForms.xml"/>
            </widgets>
        </section>
    </screen>

</screens>