@@ -346,3 +346,9 @@ $GLOBALS['TL_DCA']['tl_content']['fields']['vr_gpw_mobile_vAlign'] = [

     'eval'      => ['tl_class' => 'w33'],

     'sql'       => "varchar(20) NOT NULL default ''"

 ];

+

+$GLOBALS['TL_DCA']['tl_content']['fields']['vr_subline'] = [

+    'inputType' => 'text',

+    'eval'                    => array('maxlength'=>255, 'tl_class'=>'w50'),

+    'sql'                     => "varchar(255) NOT NULL default ''"

+];

@@ -223,6 +223,15 @@

                 <target>Die vertikale Ausrichtung innerhalb des ausgewählten Zellen-Rechtecks auf Mobil.</target>

             </trans-unit>

+            <trans-unit id="tl_content.vr_subline.0">

+                <source>Subline</source>

+                <target>Unterüberschrift</target>

+            </trans-unit>

+            <trans-unit id="tl_content.vr_subline.1">

+                <source>You can define a subheadline for the element which is only shown if the element also has a headline.</source>

+                <target>Sie können eine Unterüberschrift für das Element definieren, die nur angezeigt wird, wenn das Element auch eine Überschrift hat.</target>

+            </trans-unit>

+

             <trans-unit id="tl_content.grid_placement_legend">

                 <source>Grid placement</source>

                 <target>Raster-Platzierung</target>

@@ -116,6 +116,13 @@

                 <source>Set the vertical alignment in the selected cell rectangle for mobile.</source>

             </trans-unit>

+            <trans-unit id="tl_content.vr_subline.0">

+                <source>Subline</source>

+            </trans-unit>

+            <trans-unit id="tl_content.vr_subline.1">

+                <source>You can define a subheadline for the element which is only shown if the element also has a headline.</source>

+            </trans-unit>

+

             <trans-unit id="tl_content.grid_placement_legend">

                 <source>Grid placement</source>

             </trans-unit>

new file mode 100644

@@ -0,0 +1,12 @@

+{% use "@Contao/component/_headline.html.twig" %}

+

+{% block headline_component %}

+    <div class="block-headline">

+        {{ parent() }}

+        {% set level = min((headline.tag_name|default('h1')|split('h')[1] + 1),6) %}

+

+        {% if headline.text and data.vr_subline is defined and data.vr_subline is not empty %}

+            <div class="content-subline" aria-level="{{ level }}" role="heading">{{data.vr_subline|insert_tag_raw}}</div>

+        {% endif %}

+    </div>

+{% endblock %}

new file mode 100644

@@ -0,0 +1,33 @@

+<?php

+

+namespace vonRotenberg\CoretoolsBundle\EventListener\DataContainer;

+

+use Contao\CoreBundle\DataContainer\PaletteManipulator;

+use Contao\CoreBundle\DependencyInjection\Attribute\AsCallback;

+use Contao\DataContainer;

+use Symfony\Component\HttpFoundation\RequestStack;

+#[AsCallback(table: 'tl_content', target: 'config.onload')]

+class ContentOnloadAddSublineCallback

+{

+    private RequestStack $requestStack;

+

+    public function __construct(RequestStack $requestStack)

+    {

+        $this->requestStack = $requestStack;

+    }

+    public function __invoke(DataContainer|null $dc = null): void

+    {

+        if (null === $dc || !$dc->id || !in_array($this->requestStack->getCurrentRequest()->query->get('act'),['edit','editAll'])) {

+            return;

+        }

+

+        foreach ($GLOBALS['TL_DCA'][$dc->table]['palettes'] as $palette => $fields) {

+            if ('__selector__' === $palette) {

+                continue;

+            }

+            PaletteManipulator::create()

+                ->addField('vr_subline', 'headline', PaletteManipulator::POSITION_AFTER)

+                ->applyToPalette($palette, $dc->table);

+        }

+    }

+}