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82 lines
2.9 KiB
Objective-C
82 lines
2.9 KiB
Objective-C
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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NS_ASSUME_NONNULL_BEGIN
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@class OWSLinkPreviewDraft;
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@class OWSQuotedReplyModel;
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@class OWSUnreadIndicator;
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@class SignalAttachment;
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@class TSContactThread;
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@class TSGroupThread;
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@class TSInteraction;
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@class TSOutgoingMessage;
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@class TSThread;
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@class YapDatabaseConnection;
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@class YapDatabaseReadTransaction;
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@class YapDatabaseReadWriteTransaction;
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@interface ThreadDynamicInteractions : NSObject
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// Represents the "reverse index" of the focus message, if any.
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// The "reverse index" is the distance of this interaction from
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// the last interaction in the thread. Therefore the last interaction
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// will have a "reverse index" of zero.
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//
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// We use "reverse indices" because (among other uses) we use this to
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// determine the initial load window size.
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@property (nonatomic, nullable, readonly) NSNumber *focusMessagePosition;
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@property (nonatomic, nullable, readonly) OWSUnreadIndicator *unreadIndicator;
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- (void)clearUnreadIndicatorState;
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@end
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#pragma mark -
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@interface ThreadUtil : NSObject
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#pragma mark - dynamic interactions
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// This method will create and/or remove any offers and indicators
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// necessary for this thread. This includes:
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//
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// * Block offers.
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// * "Add to contacts" offers.
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// * Unread indicators.
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//
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// Parameters:
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//
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// * hideUnreadMessagesIndicator: If YES, the "unread indicator" has
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// been cleared and should not be shown.
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// * firstUnseenInteractionTimestamp: A snapshot of unseen message state
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// when we entered the conversation view. See comments on
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// ThreadOffersAndIndicators.
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// * maxRangeSize: Loading a lot of messages in conversation view is
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// slow and unwieldy. This number represents the maximum current
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// size of the "load window" in that view. The unread indicator should
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// always be inserted within that window.
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+ (ThreadDynamicInteractions *)ensureDynamicInteractionsForThread:(TSThread *)thread
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dbConnection:(YapDatabaseConnection *)dbConnection
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hideUnreadMessagesIndicator:(BOOL)hideUnreadMessagesIndicator
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lastUnreadIndicator:(nullable OWSUnreadIndicator *)lastUnreadIndicator
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focusMessageId:(nullable NSString *)focusMessageId
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maxRangeSize:(int)maxRangeSize;
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#pragma mark - Delete Content
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+ (void)deleteAllContent;
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#pragma mark - Find Content
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+ (nullable TSInteraction *)findInteractionInThreadByTimestamp:(uint64_t)timestamp
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authorId:(NSString *)authorId
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threadUniqueId:(NSString *)threadUniqueId
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transaction:(YapDatabaseReadTransaction *)transaction;
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@end
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NS_ASSUME_NONNULL_END
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