diff --git a/lib/Alchemy/Phrasea/Controller/LightboxController.php b/lib/Alchemy/Phrasea/Controller/LightboxController.php
index 30d7c81f65..19c7378c1f 100644
--- a/lib/Alchemy/Phrasea/Controller/LightboxController.php
+++ b/lib/Alchemy/Phrasea/Controller/LightboxController.php
@@ -450,6 +450,51 @@ class LightboxController extends Controller
         return $this->app->json($data);
     }
 
+    /**
+     * @param Basket $basket
+     * @return Response
+     */
+    public function ajaxGetElementsAction(Basket $basket)
+    {
+        $ret = [
+            'error'  => false,
+            'datas' => [
+                'counts' => [
+                    'yes'   => 0,
+                    'no'    => 0,
+                    'nul'   => 0,
+                    'total' => 0
+                ]
+            ]
+        ];
+        try {
+            if (!$basket->getValidation()) {
+                throw new Exception('There is no validation session attached to this basket');
+            }
+            foreach ($basket->getElements() as $element) {
+                $vd = $element->getUserValidationDatas($this->getAuthenticatedUser());
+                if($vd->getAgreement() === true) {
+                    $ret['datas']['counts']['yes']++;
+                }
+                elseif($vd->getAgreement() === false) {
+                    $ret['datas']['counts']['no']++;
+                }
+                elseif($vd->getAgreement() === null) {
+                    $ret['datas']['counts']['nul']++;
+                }
+                $ret['datas']['counts']['total']++;
+            }
+        }
+        catch (Exception $e) {
+            $ret = [
+                'error' => true,
+                'datas' => $e->getMessage()
+            ];
+        }
+
+        return $this->app->json($ret);
+    }
+
     /**
      * @param Basket $basket
      * @throws Exception
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Lightbox.php b/lib/Alchemy/Phrasea/ControllerProvider/Lightbox.php
index c1485b862c..7e18fff788 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Lightbox.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Lightbox.php
@@ -105,6 +105,11 @@ class Lightbox implements ControllerProviderInterface, ServiceProviderInterface
             ->assert('basket', '\d+')
         ;
 
+        $controllers->get('/ajax/GET_ELEMENTS/{basket}/', 'controller.lightbox:ajaxGetElementsAction')
+            ->bind('lightbox_ajax_get_elements')
+            ->assert('basket', '\d+')
+        ;
+
         return $controllers;
     }