[!!!][TASK] Drop class exists viewhelper and use f:asset.css for background images

Author: benjaminkott

Classes/ViewHelpers/Condition/ClassExistsViewHelper.php

@@ -34,14 +34,7 @@
                     <f:variable name="styles" value="{variantStyle -> f:format.trim()} {styles}"/>
                 </f:if>
             </f:for>
-            <bk2k:condition.classExists class="TYPO3\CMS\Fluid\ViewHelpers\Security\NonceViewHelper">
-                <f:then>
-                    <f:render partial="Carousel/General/BackgroundImageStyleNonce" arguments="{_all}" />
-                </f:then>
-                <f:else>
-                    <f:render partial="Carousel/General/BackgroundImageStyle" arguments="{_all}" />
-                </f:else>
-            </bk2k:condition.classExists>
+            <f:asset.css identifier="{backgroundImageIdentifier}" useNonce="1">{styles -> f:format.raw()}</f:asset.css>
         </div>
     </div>
 </f:if>

Resources/Private/Partials/ContentElements/Carousel/General/BackgroundImage.html

@@ -26,14 +26,7 @@
                     <f:variable name="styles" value="{variantStyle -> f:format.trim()} {styles}"/>
                 </f:if>
             </f:for>
-            <bk2k:condition.classExists class="TYPO3\CMS\Fluid\ViewHelpers\Security\NonceViewHelper">
-                <f:then>
-                    <f:render partial="Frame/BackgroundImageStyleNonce" arguments="{_all}" />
-                </f:then>
-                <f:else>
-                    <f:render partial="Frame/BackgroundImageStyle" arguments="{_all}" />
-                </f:else>
-            </bk2k:condition.classExists>
+            <f:asset.css identifier="{backgroundImage.id}" useNonce="1">{styles -> f:format.raw()}</f:asset.css>
         </div>
     </div>
 </f:if>