implement old settings interface

Signed-off-by: Robin Appelman <robin@icewind.nl>

lib/private/Activity/Manager.php

@@ -271,9 +271,11 @@ class Manager implements IManager {
 			/** @var ISetting $setting */
 			$setting = \OC::$server->query($class);
 
-			if ($setting instanceof ISetting) {
-				$setting = new ActivitySettingsAdapter($setting);
-			} elseif (!$setting instanceof ActivitySettings) {
+			if (!$setting instanceof ISetting) {
+				if (!$setting instanceof ActivitySettings) {
+					$setting = new ActivitySettingsAdapter($setting);
+				}
+			} else {
 				throw new \InvalidArgumentException('Invalid activity filter registered');
 			}
 

lib/public/Activity/ActivitySettings.php

@@ -26,7 +26,7 @@ namespace OCP\Activity;
 /**
  * @since 20.0.0
  */
-abstract class ActivitySettings {
+abstract class ActivitySettings implements ISetting {
 	/**
 	 * @return string Lowercase a-z and underscore only identifier
 	 * @since 20.0.0
@@ -78,4 +78,24 @@ abstract class ActivitySettings {
 	public function isDefaultEnabledNotification() {
 		return $this->isDefaultEnabledMail() && !$this->canChangeMail();
 	}
+
+	/**
+	 * Left in for backwards compatibility
+	 *
+	 * @return bool
+	 * @since 20.0.0
+	 */
+	public function canChangeStream() {
+		return false;
+	}
+
+	/**
+	 * Left in for backwards compatibility
+	 *
+	 * @return bool
+	 * @since 20.0.0
+	 */
+	public function isDefaultEnabledStream() {
+		return true;
+	}
 }