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// Copyright 2019 Google
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import <Foundation/Foundation.h>
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/**
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* Completion block that can be called in your subclass implementation. It is up to you when you
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* want to call it.
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*/
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typedef void (^FIRCLSFABAsyncOperationCompletionBlock)(NSError *__nullable error);
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/**
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* FIRCLSFABAsyncOperation is a subclass of NSOperation that allows for asynchronous work to be
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* performed, for things like networking, IPC or UI-driven logic. Create your own subclasses to
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* encapsulate custom logic.
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* @warning When subclassing to create your own operations, be sure to call -[finishWithError:] at
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* some point, or program execution will hang.
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* @see -[finishWithError:] in FIRCLSFABAsyncOperation_Private.h
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*/
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@interface FIRCLSFABAsyncOperation : NSOperation
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/**
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* Add a callback method for consumers of your subclasses to set when the asynchronous work is
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* marked as complete with -[finishWithError:].
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*/
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@property(copy, nonatomic, nullable) FIRCLSFABAsyncOperationCompletionBlock asyncCompletion;
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@end
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