Add value sets for event / appointment status, attendance mode, and appointment and

exhibition contributor roles

src/MDAppointmentAttendanceModeSet.php

@@ -0,0 +1,38 @@
+<?PHP
+/**
+ * Contains a class for controlling the list of available attendance modes
+ * to appointment / event.
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+/**
+ * Class containing available attendance modes.
+ */
+final class MDAppointmentAttendanceModeSet extends MDValueSet {
+
+    const MODES = [
+        'offline',
+        'online',
+        'mixed',
+    ];
+
+    const MODES_TO_SCHEMA_ORG = [
+        'offline' => 'https://schema.org/OfflineEventAttendanceMode',
+        'online' => 'https://schema.org/OnlineEventAttendanceMode',
+        'mixed' => 'https://schema.org/MixedEventAttendanceMode',
+    ];
+
+    /**
+     * Gets a list of the entries in a translated version.
+     *
+     * @param MDTlLoader $tlLoader Translation loader.
+     *
+     * @return array<string>
+     */
+    public static function getSortedList(MDTlLoader $tlLoader):array {
+        return parent::getTlSortedList($tlLoader, self::AVAILABLE_ROLES, "appointment_attendance_modes", "appointment_attendance_modes");
+
+    }
+}