Optical rendering of file and image listings

syntax/AbstractSyntax.php

@@ -238,6 +238,25 @@ abstract class syntax_plugin_luxtools_abstract extends SyntaxPlugin
         $renderer->cdata('[n/a: ' . $this->getLang($langKey) . ']');
     }
 
+    /**
+     * Render a muted empty-state message (used when a listing has no results).
+     *
+     * @param \Doku_Renderer $renderer
+     * @param string $langKey
+     * @return void
+     */
+    protected function renderEmptyState(\Doku_Renderer $renderer, string $langKey): void
+    {
+        $text = (string)$this->getLang($langKey);
+
+        if ($renderer instanceof \Doku_Renderer_xhtml) {
+            $renderer->doc .= '<div class="filetools-plugin"><div class="luxtools-empty">' . hsc($text) . '</div></div>';
+            return;
+        }
+
+        $renderer->cdata($text);
+    }
+
     /**
      * Separate a path into base directory and pattern.
      *