1 files changed, 59 insertions, 0 deletions
diff --git a/Firestore/Source/API/FIRListenerRegistration.mm b/Firestore/Source/API/FIRListenerRegistration.mm
new file mode 100644
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+++ b/Firestore/Source/API/FIRListenerRegistration.mm
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FIRListenerRegistration+Internal.h"
+
+#import "Firestore/Source/Core/FSTFirestoreClient.h"
+#import "Firestore/Source/Util/FSTAsyncQueryListener.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FSTListenerRegistration ()
+
+/** The client that was used to register this listen. */
+@property(nonatomic, strong, readonly) FSTFirestoreClient *client;
+
+/** The async listener that is used to mute events synchronously. */
+@property(nonatomic, strong, readonly) FSTAsyncQueryListener *asyncListener;
+
+/** The internal FSTQueryListener that can be used to unlisten the query. */
+@property(nonatomic, strong, readwrite) FSTQueryListener *internalListener;
+
+@end
+
+@implementation FSTListenerRegistration
+
+- (instancetype)initWithClient:(FSTFirestoreClient *)client
+                 asyncListener:(FSTAsyncQueryListener *)asyncListener
+              internalListener:(FSTQueryListener *)internalListener {
+  if (self = [super init]) {
+    _client = client;
+    _asyncListener = asyncListener;
+    _internalListener = internalListener;
+  }
+  return self;
+}
+
+- (void)remove {
+  [self.asyncListener mute];
+  [self.client removeListener:self.internalListener];
+  _internalListener = nil;
+  _asyncListener = nil;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END