MDL-85359 core_ltix: make placement configuration form to be dynamic

Author: andrewgos

ltix/classes/form/edit_types.php

@@ -256,6 +256,10 @@ public function definition() {
         // This ideally should depend on the selection of the "toolplacements" element.
         foreach ($registeredplacementtypes as $key => $value) {
             $this->add_placement_config_elements($mform, $key, explode(':', $value)[1]);
+
+            // Dynamically hide it depending on the toolplacements[] field
+            $unrelatedplacementtypeids = array_diff(array_keys($registeredplacementtypes), [$key]);
+            $mform->hideIf("toolplacement_placement_{$key}", 'toolplacements[]', 'in', $unrelatedplacementtypeids);
         }
 
         // Restrict to course categories.