Fix wrong function name.

main/calendar/agenda.php

@@ -115,7 +115,7 @@ if (api_is_allowed_to_edit(false, true) ||
                 $startDate = $values['date_range_start'];
                 $endDate = $values['date_range_end'];
 
-                $eventId = $agenda->add_event(
+                $eventId = $agenda->addEvent(
                     $startDate,
                     $endDate,
                     $allDay,

main/inc/lib/agenda.lib.php

@@ -17,6 +17,7 @@ class Agenda
     /** @var array */
     public $course;
     public $comment;
+    private $isAllowedToEdit;
 
     /**
      * Constructor
@@ -37,6 +38,7 @@ class Agenda
         }
         $this->setSessionId(api_get_session_id());
         $this->setSenderId(api_get_user_id());
+        $this->setIsAllowedToEdit(api_is_allowed_to_edit(null, true));
         $this->events = array();
 
         // Event colors
@@ -598,7 +600,7 @@ class Agenda
                     return false;
                 }
 
-                if (api_is_allowed_to_edit(null, true)) {
+                if ($this->getIsAllowedToEdit()) {
 
                     $attributes = array(
                         'title' => $title,
@@ -3174,5 +3176,21 @@ class Agenda
         return $start_end_array;
     }
 
+    /**
+     * @return bool
+     */
+    public function getIsAllowedToEdit()
+    {
+        return $this->isAllowedToEdit;
+    }
+
+    /**
+     * @param bool $isAllowedToEdit
+     */
+    public function setIsAllowedToEdit($isAllowedToEdit)
+    {
+        $this->isAllowedToEdit = $isAllowedToEdit;
+    }
+
 
 }