/*
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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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*/
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#import <Foundation/Foundation.h>
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#import "GDTCORPlatform.h"
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@class GDTCOREvent;
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NS_ASSUME_NONNULL_BEGIN
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/** A protocol defining the lifecycle events objects in the library must respond to immediately. */
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@protocol GDTCORLifecycleProtocol <NSObject>
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@optional
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/** Indicates an imminent app termination in the rare occurrence when -applicationWillTerminate: has
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* been called.
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*
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* @param app The GDTCORApplication instance.
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*/
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- (void)appWillTerminate:(GDTCORApplication *)app;
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/** Indicates that the app is moving to background and eventual suspension or the current UIScene is
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* deactivating.
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*
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* @param app The GDTCORApplication instance.
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*/
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- (void)appWillBackground:(GDTCORApplication *)app;
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/** Indicates that the app is resuming operation or a UIScene is activating.
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*
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* @param app The GDTCORApplication instance.
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*/
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- (void)appWillForeground:(GDTCORApplication *)app;
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@end
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/** This class manages the library's response to app lifecycle events.
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*
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* When backgrounding, the library doesn't stop processing events, it's just that several background
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* tasks will end up being created for every event that's sent, and the stateful objects of the
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* library (GDTCORStorage and GDTCORUploadCoordinator instances) will deserialize themselves from
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* and to disk before and after every operation, respectively.
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*/
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@interface GDTCORLifecycle : NSObject <GDTCORApplicationDelegate>
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@end
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NS_ASSUME_NONNULL_END
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