New feature: Add possibility to restrict allowed download formats.

Author: bernhard-wunderbyte

classes/output/table.php

@@ -613,9 +613,10 @@ public function __construct(wunderbyte_table $table, string $encodedtable = '')
      */
     private function return_dataformat_selector() {
         $formats = core_plugin_manager::instance()->get_plugins_of_type('dataformat');
+        $allowed = $this->wbtable->alloweddownloadformats ?? [];
         $printoptions = [];
         foreach ($formats as $format) {
-            if ($format->is_enabled()) {
+            if ($format->is_enabled() && (empty($allowed) || in_array($format->name, $allowed, true))) {
                 $printoptions[] = [
                     'value' => $format->name,
                     'label' => get_string('dataformat', $format->component),

classes/wunderbyte_table.php

@@ -141,6 +141,15 @@ class wunderbyte_table extends table_sql {
      */
     public $showdownloadbutton = false;
 
+    /**
+     * Restrict the download formats shown in the selector.
+     * An empty array means all enabled formats are shown.
+     * Example: ['pdf'] to show only the PDF format.
+     *
+     * @var array
+     */
+    public $alloweddownloadformats = [];
+
     /**
      *
      * @var bool Show button to add individual custom filters.