feat: add content elements, change backend preview

packages/base/ContentBlocks/ContentElements/hero/templates/backend-preview.html

@@ -2,20 +2,27 @@
     xmlns:be="http://typo3.org/ns/TYPO3/CMS/Backend/ViewHelpers"
     data-namespace-typo3-fluid="true"
 >
-
 <f:layout name="Preview"/>
 
 <f:section name="Header">
-    <be:link.editRecord uid="{data.uid}" table="{data.mainType}">{data.header}</be:link.editRecord>
+    <be:link.editRecord uid="{data.uid}" table="{data.mainType}">
+        <f:if condition="{data.header}">
+            <f:then><strong>{data.header}</strong></f:then>
+        </f:if>
+    </be:link.editRecord>
 </f:section>
 
 <f:section name="Content">
-    Preview for Content Block: cloonar/hero
-</f:section>
+    <f:if condition="{data.image}">
+        <f:image image="{data.image.0}" width="100" height="auto" treatIdAsReference="1" alt="Preview image" />
+    </f:if>
 
-<f:comment>
-<!-- Uncomment to override preview footer -->
-<f:section name="Footer">
-    My custom Footer
+    <f:if condition="{data.bodytext}">
+        <p>
+            <f:format.crop maxCharacters="80">
+              <f:format.stripTags>{data.bodytext}</f:format.stripTags>
+            </f:format.crop>
+        </p>
+    </f:if>
 </f:section>
-</f:comment>
+</html>