2 files changed, 44 insertions, 0 deletions
diff --git a/lib/public/Group/Backend/IHideFromCollaborationBackend.php b/lib/public/Group/Backend/IHideFromCollaborationBackend.php
new file mode 100644
index 00000000000..81afbc3d568
--- /dev/null
+++ b/lib/public/Group/Backend/IHideFromCollaborationBackend.php
@@ -0,0 +1,38 @@
+<?php declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019 Robin Appelman <robin@icewind.nl>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCP\Group\Backend;
+
+/**
+ * @since 16.0.0
+ *
+ * Allow the backend to mark groups to be excluded from being shown in search dialogs
+ */
+interface IHideFromCollaborationBackend {
+	/**
+	 * Check if a group should be hidden from search dialogs
+	 *
+	 * @param string $groupId
+	 * @return bool
+	 * @since 16.0.0
+	 */
+	public function hideGroup(string $groupId): bool;
+}
diff --git a/lib/public/IGroup.php b/lib/public/IGroup.php
index 8fa87e35ce3..48fa84df393 100644
--- a/lib/public/IGroup.php
+++ b/lib/public/IGroup.php
@@ -138,4 +138,10 @@ interface IGroup {
 	 * @since 14.0.0
 	 */
 	public function canAddUser();
+
+	/**
+	 * @return bool
+	 * @since 16.0.0
+	 */
+	public function hideFromCollaboration(): bool;
 }