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/*
* 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 <Foundation/Foundation.h>
#import "Firestore/Source/Core/FSTViewSnapshot.h"
NS_ASSUME_NONNULL_BEGIN
@class FSTDispatchQueue;
@class FSTQueryListener;
/**
* A wrapper class around FSTQueryListener that dispatches events asynchronously.
*/
@interface FSTAsyncQueryListener : NSObject
- (instancetype)initWithDispatchQueue:(FSTDispatchQueue *)dispatchQueue
snapshotHandler:(FSTViewSnapshotHandler)snapshotHandler
NS_DESIGNATED_INITIALIZER;
- (instancetype)init NS_UNAVAILABLE;
/**
* Synchronously mutes the listener and raise no further events. This method is thread safe can be
* called from any queue.
*/
- (void)mute;
/** Creates an asynchronous version of the provided snapshot handler. */
- (FSTViewSnapshotHandler)asyncSnapshotHandler;
@end
NS_ASSUME_NONNULL_END
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