//
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// TWTRTimelineDataSource.h
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// TwitterKit
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//
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// Copyright (c) 2015 Twitter. All rights reserved.
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//
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#import "TWTRTimelineType.h"
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@class TWTRAPIClient;
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@class TWTRTimelineCursor;
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@class TWTRTimelineFilter;
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@class TWTRTweet;
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NS_ASSUME_NONNULL_BEGIN
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typedef void (^TWTRLoadTimelineCompletion)(NSArray<TWTRTweet *> *_Nullable tweets, TWTRTimelineCursor *_Nullable cursor, NSError *_Nullable error);
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/**
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* Responsible for building network parameters for requesting a timeline of Tweets.
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*
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* Implementations of this protocol don't need to be thread-safe. All the methods will be invoked on the main thread.
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*/
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@protocol TWTRTimelineDataSource <NSObject>
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/**
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* Load Tweets before a given position. For time-based timelines this generally
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* corresponds to Tweets older than a position.
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*
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* @param position (optional) The position or Tweet ID before the page
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* of Tweets to be loaded.
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* @param completion (required) Invoked with the Tweets and the cursor in case of success, or nil
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* and an error in case of error. This must be called on the main thread.
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*/
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- (void)loadPreviousTweetsBeforePosition:(nullable NSString *)position completion:(TWTRLoadTimelineCompletion)completion;
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/*
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* The type of the timeline that this data source represents.
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*/
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@property (nonatomic, readonly) TWTRTimelineType timelineType;
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/*
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* An object with a set of filters to hide certain tweets.
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*/
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@property (nonatomic, copy, nullable) TWTRTimelineFilter *timelineFilter;
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/**
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* The API client to use with this data source.
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* You will, likely, not need to alter this value unless you are implementing your
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* own timeline view controller.
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*/
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@property (nonatomic) TWTRAPIClient *APIClient;
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@end
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NS_ASSUME_NONNULL_END
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