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44 lines
1.7 KiB
Objective-C
44 lines
1.7 KiB
Objective-C
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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NS_ASSUME_NONNULL_BEGIN
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@interface OWSUnreadIndicator : NSObject
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@property (nonatomic, readonly) uint64_t timestamp;
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@property (nonatomic, readonly) BOOL hasMoreUnseenMessages;
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@property (nonatomic, readonly) NSUInteger missingUnseenSafetyNumberChangeCount;
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// The timestamp of the oldest unseen message.
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//
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// Once we enter messages view, we mark all messages read, so we need
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// a snapshot of what the first unread message was when we entered the
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// view so that we can call ensureDynamicInteractionsForThread:...
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// repeatedly. The unread indicator should continue to show up until
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// it has been cleared, at which point hideUnreadMessagesIndicator is
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// YES in ensureDynamicInteractionsForThread:...
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@property (nonatomic, readonly) uint64_t firstUnseenInteractionTimestamp;
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// The index of the unseen indicator, counting from the _end_ of the conversation
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// history.
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//
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// This is used by MessageViewController to increase the
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// range size of the mappings (the load window of the conversation)
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// to include the unread indicator.
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@property (nonatomic, readonly) NSInteger unreadIndicatorPosition;
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- (instancetype)init NS_UNAVAILABLE;
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- (instancetype)initUnreadIndicatorWithTimestamp:(uint64_t)timestamp
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hasMoreUnseenMessages:(BOOL)hasMoreUnseenMessages
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missingUnseenSafetyNumberChangeCount:(NSUInteger)missingUnseenSafetyNumberChangeCount
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unreadIndicatorPosition:(NSInteger)unreadIndicatorPosition
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firstUnseenInteractionTimestamp:(uint64_t)firstUnseenInteractionTimestamp NS_DESIGNATED_INITIALIZER;
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@end
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NS_ASSUME_NONNULL_END
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