1365 lines
58 KiB
Objective-C
1365 lines
58 KiB
Objective-C
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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#import "ConversationViewModel.h"
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#import "ConversationViewItem.h"
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#import "DateUtil.h"
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#import "OWSMessageBubbleView.h"
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#import "OWSQuotedReplyModel.h"
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#import "Signal-Swift.h"
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#import <SignalCoreKit/NSDate+OWS.h>
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#import <SignalMessaging/OWSContactsManager.h>
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#import <SignalMessaging/OWSUnreadIndicator.h>
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#import <SignalMessaging/ThreadUtil.h>
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#import <SignalServiceKit/OWSBlockingManager.h>
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#import <SignalServiceKit/OWSPrimaryStorage.h>
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#import <SignalServiceKit/SSKEnvironment.h>
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#import <SignalServiceKit/TSDatabaseView.h>
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#import <SignalServiceKit/TSIncomingMessage.h>
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#import <SignalServiceKit/TSOutgoingMessage.h>
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#import <SignalServiceKit/TSThread.h>
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#import <YapDatabase/YapDatabase.h>
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#import <YapDatabase/YapDatabaseAutoView.h>
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#import <YapDatabase/YapDatabaseViewChange.h>
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NS_ASSUME_NONNULL_BEGIN
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@implementation ConversationUpdateItem
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- (instancetype)initWithUpdateItemType:(ConversationUpdateItemType)updateItemType
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oldIndex:(NSUInteger)oldIndex
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newIndex:(NSUInteger)newIndex
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viewItem:(nullable id<ConversationViewItem>)viewItem
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{
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self = [super init];
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if (!self) {
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return self;
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}
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_updateItemType = updateItemType;
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_oldIndex = oldIndex;
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_newIndex = newIndex;
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_viewItem = viewItem;
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return self;
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}
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@end
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#pragma mark -
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@implementation ConversationUpdate
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- (instancetype)initWithConversationUpdateType:(ConversationUpdateType)conversationUpdateType
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updateItems:(nullable NSArray<ConversationUpdateItem *> *)updateItems
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shouldAnimateUpdates:(BOOL)shouldAnimateUpdates
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{
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self = [super init];
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if (!self) {
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return self;
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}
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_conversationUpdateType = conversationUpdateType;
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_updateItems = updateItems;
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_shouldAnimateUpdates = shouldAnimateUpdates;
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return self;
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}
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+ (ConversationUpdate *)minorUpdate
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{
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return [[ConversationUpdate alloc] initWithConversationUpdateType:ConversationUpdateType_Minor
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updateItems:nil
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shouldAnimateUpdates:NO];
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}
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+ (ConversationUpdate *)reloadUpdate
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{
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return [[ConversationUpdate alloc] initWithConversationUpdateType:ConversationUpdateType_Reload
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updateItems:nil
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shouldAnimateUpdates:NO];
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}
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+ (ConversationUpdate *)diffUpdateWithUpdateItems:(nullable NSArray<ConversationUpdateItem *> *)updateItems
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shouldAnimateUpdates:(BOOL)shouldAnimateUpdates
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{
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return [[ConversationUpdate alloc] initWithConversationUpdateType:ConversationUpdateType_Diff
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updateItems:updateItems
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shouldAnimateUpdates:shouldAnimateUpdates];
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}
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@end
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#pragma mark -
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// Always load up to n messages when user arrives.
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//
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// The smaller this number is, the faster the conversation can display.
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// To test, shrink you accessability font as much as possible, then count how many 1-line system info messages (our
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// shortest cells) can fit on screen at a time on an iPhoneX
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//
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// PERF: we could do less messages on shorter (older, slower) devices
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// PERF: we could cache the cell height, since some messages will be much taller.
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static const int kYapDatabasePageSize = 25;
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// Never show more than n messages in conversation view when user arrives.
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static const int kConversationInitialMaxRangeSize = 300;
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// Never show more than n messages in conversation view at a time.
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static const int kYapDatabaseRangeMaxLength = 25000;
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static const int kYapDatabaseRangeMinLength = 0;
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#pragma mark -
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@interface ConversationViewModel ()
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@property (nonatomic, weak) id<ConversationViewModelDelegate> delegate;
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@property (nonatomic, readonly) TSThread *thread;
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// The mapping must be updated in lockstep with the uiDatabaseConnection.
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//
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// * The first (required) step is to update uiDatabaseConnection using beginLongLivedReadTransaction.
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// * The second (required) step is to update messageMappings.
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// * The third (optional) step is to update the messageMappings range using
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// updateMessageMappingRangeOptions.
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// * The fourth (optional) step is to update the view items using reloadViewItems.
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// * The steps must be done in strict order.
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// * If we do any of the steps, we must do all of the required steps.
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// * We can't use messageMappings or viewItems after the first step until we've
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// done the last step; i.e.. we can't do any layout, since that uses the view
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// items which haven't been updated yet.
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// * If the first and/or second steps changes the set of messages
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// their ordering and/or their state, we must do the third and fourth steps.
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// * If we do the third step, we must call resetContentAndLayout afterward.
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@property (nonatomic) YapDatabaseViewMappings *messageMappings;
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@property (nonatomic) NSArray<id<ConversationViewItem>> *viewItems;
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@property (nonatomic) NSMutableDictionary<NSString *, id<ConversationViewItem>> *viewItemCache;
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@property (nonatomic) NSUInteger lastRangeLength;
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@property (nonatomic, nullable) ThreadDynamicInteractions *dynamicInteractions;
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@property (nonatomic) BOOL hasClearedUnreadMessagesIndicator;
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@property (nonatomic, nullable) NSDate *collapseCutoffDate;
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@property (nonatomic, nullable) NSString *typingIndicatorsRecipient;
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@end
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#pragma mark -
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@implementation ConversationViewModel
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- (instancetype)initWithThread:(TSThread *)thread
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focusMessageIdOnOpen:(nullable NSString *)focusMessageIdOnOpen
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delegate:(id<ConversationViewModelDelegate>)delegate
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{
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self = [super init];
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if (!self) {
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return self;
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}
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OWSAssertDebug(thread);
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OWSAssertDebug(delegate);
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_thread = thread;
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_delegate = delegate;
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self.focusMessageIdOnOpen = focusMessageIdOnOpen;
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[self configure];
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return self;
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}
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#pragma mark - Dependencies
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- (OWSPrimaryStorage *)primaryStorage
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{
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OWSAssertDebug(SSKEnvironment.shared.primaryStorage);
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return SSKEnvironment.shared.primaryStorage;
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}
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- (YapDatabaseConnection *)uiDatabaseConnection
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{
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return self.primaryStorage.uiDatabaseConnection;
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}
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- (YapDatabaseConnection *)editingDatabaseConnection
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{
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return self.primaryStorage.dbReadWriteConnection;
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}
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- (OWSContactsManager *)contactsManager
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{
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return (OWSContactsManager *)SSKEnvironment.shared.contactsManager;
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}
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- (OWSBlockingManager *)blockingManager
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{
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return OWSBlockingManager.sharedManager;
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}
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- (id<OWSTypingIndicators>)typingIndicators
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{
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return SSKEnvironment.shared.typingIndicators;
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}
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#pragma mark
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- (void)addNotificationListeners
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{
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(uiDatabaseDidUpdateExternally:)
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name:OWSUIDatabaseConnectionDidUpdateExternallyNotification
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object:self.primaryStorage.dbNotificationObject];
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(uiDatabaseWillUpdate:)
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name:OWSUIDatabaseConnectionWillUpdateNotification
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object:self.primaryStorage.dbNotificationObject];
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(uiDatabaseDidUpdate:)
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name:OWSUIDatabaseConnectionDidUpdateNotification
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object:self.primaryStorage.dbNotificationObject];
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(applicationDidEnterBackground:)
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name:OWSApplicationDidEnterBackgroundNotification
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object:nil];
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(signalAccountsDidChange:)
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name:OWSContactsManagerSignalAccountsDidChangeNotification
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object:nil];
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(typingIndicatorStateDidChange:)
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name:[OWSTypingIndicatorsImpl typingIndicatorStateDidChange]
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object:nil];
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}
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- (void)signalAccountsDidChange:(NSNotification *)notification
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{
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OWSAssertIsOnMainThread();
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[self ensureDynamicInteractions];
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}
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- (void)configure
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{
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OWSLogInfo(@"");
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// We need to update the "unread indicator" _before_ we determine the initial range
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// size, since it depends on where the unread indicator is placed.
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self.lastRangeLength = 0;
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self.typingIndicatorsRecipient = [self.typingIndicators typingIndicatorsForThread:self.thread];
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[self ensureDynamicInteractions];
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[self.primaryStorage updateUIDatabaseConnectionToLatest];
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[self createNewMessageMappings];
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if (![self reloadViewItems]) {
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OWSFailDebug(@"failed to reload view items in configureForThread.");
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}
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}
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- (void)viewDidLoad
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{
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[self addNotificationListeners];
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}
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- (void)dealloc
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{
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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}
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- (BOOL)canLoadMoreItems
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{
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if (self.lastRangeLength >= kYapDatabaseRangeMaxLength) {
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return NO;
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}
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NSUInteger loadWindowSize = [self.messageMappings numberOfItemsInGroup:self.thread.uniqueId];
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__block NSUInteger totalMessageCount;
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[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
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totalMessageCount =
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[[transaction ext:TSMessageDatabaseViewExtensionName] numberOfItemsInGroup:self.thread.uniqueId];
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}];
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return loadWindowSize < totalMessageCount;
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}
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- (void)applicationDidEnterBackground:(NSNotification *)notification
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{
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if (self.hasClearedUnreadMessagesIndicator) {
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self.hasClearedUnreadMessagesIndicator = NO;
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[self.dynamicInteractions clearUnreadIndicatorState];
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}
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}
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- (void)viewDidResetContentAndLayout
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{
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self.collapseCutoffDate = [NSDate new];
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if (![self reloadViewItems]) {
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OWSFailDebug(@"failed to reload view items in resetContentAndLayout.");
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}
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}
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- (void)loadAnotherPageOfMessages
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{
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BOOL hasEarlierUnseenMessages = self.dynamicInteractions.unreadIndicator.hasMoreUnseenMessages;
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[self loadNMoreMessages:kYapDatabasePageSize];
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// Don’t auto-scroll after “loading more messages” unless we have “more unseen messages”.
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//
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// Otherwise, tapping on "load more messages" autoscrolls you downward which is completely wrong.
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if (hasEarlierUnseenMessages && !self.focusMessageIdOnOpen) {
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// Ensure view items are updated before trying to scroll to the
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// unread indicator.
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//
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// loadNMoreMessages calls resetMappings which calls ensureDynamicInteractions,
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// which may move the unread indicator, and for scrollToUnreadIndicatorAnimated
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// to work properly, the view items need to be updated to reflect that change.
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[self.primaryStorage updateUIDatabaseConnectionToLatest];
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[self.delegate conversationViewModelDidLoadPrevPage];
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}
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}
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- (void)loadNMoreMessages:(NSUInteger)numberOfMessagesToLoad
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{
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[self.delegate conversationViewModelWillLoadMoreItems];
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self.lastRangeLength = MIN(self.lastRangeLength + numberOfMessagesToLoad, (NSUInteger)kYapDatabaseRangeMaxLength);
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[self resetMappings];
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[self.delegate conversationViewModelDidLoadMoreItems];
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}
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- (void)updateMessageMappingRangeOptions
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{
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NSUInteger rangeLength = 0;
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if (self.lastRangeLength == 0) {
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// If this is the first time we're configuring the range length,
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// try to take into account the position of the unread indicator
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// and the "focus message".
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OWSAssertDebug(self.dynamicInteractions);
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if (self.focusMessageIdOnOpen) {
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OWSAssertDebug(self.dynamicInteractions.focusMessagePosition);
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if (self.dynamicInteractions.focusMessagePosition) {
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OWSLogVerbose(@"ensuring load of focus message: %@", self.dynamicInteractions.focusMessagePosition);
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rangeLength = MAX(rangeLength, 1 + self.dynamicInteractions.focusMessagePosition.unsignedIntegerValue);
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}
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}
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if (self.dynamicInteractions.unreadIndicator) {
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NSUInteger unreadIndicatorPosition
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= (NSUInteger)self.dynamicInteractions.unreadIndicator.unreadIndicatorPosition;
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// If there is an unread indicator, increase the initial load window
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// to include it.
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OWSAssertDebug(unreadIndicatorPosition > 0);
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OWSAssertDebug(unreadIndicatorPosition <= kYapDatabaseRangeMaxLength);
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// We'd like to include at least N seen messages,
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// to give the user the context of where they left off the conversation.
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const NSUInteger kPreferredSeenMessageCount = 1;
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rangeLength = MAX(rangeLength, unreadIndicatorPosition + kPreferredSeenMessageCount);
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}
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}
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// Always try to load at least a single page of messages.
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rangeLength = MAX(rangeLength, kYapDatabasePageSize);
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// Range size should monotonically increase.
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rangeLength = MAX(rangeLength, self.lastRangeLength);
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// Enforce max range size.
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rangeLength = MIN(rangeLength, kYapDatabaseRangeMaxLength);
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self.lastRangeLength = rangeLength;
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YapDatabaseViewRangeOptions *rangeOptions =
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[YapDatabaseViewRangeOptions flexibleRangeWithLength:rangeLength offset:0 from:YapDatabaseViewEnd];
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rangeOptions.maxLength = MAX(rangeLength, kYapDatabaseRangeMaxLength);
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rangeOptions.minLength = kYapDatabaseRangeMinLength;
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[self.messageMappings setRangeOptions:rangeOptions forGroup:self.thread.uniqueId];
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[self.delegate conversationViewModelRangeDidChange];
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self.collapseCutoffDate = [NSDate new];
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}
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- (void)ensureDynamicInteractions
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{
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OWSAssertIsOnMainThread();
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const int currentMaxRangeSize = (int)self.lastRangeLength;
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const int maxRangeSize = MAX(kConversationInitialMaxRangeSize, currentMaxRangeSize);
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self.dynamicInteractions = [ThreadUtil ensureDynamicInteractionsForThread:self.thread
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contactsManager:self.contactsManager
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blockingManager:self.blockingManager
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dbConnection:self.editingDatabaseConnection
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hideUnreadMessagesIndicator:self.hasClearedUnreadMessagesIndicator
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lastUnreadIndicator:self.dynamicInteractions.unreadIndicator
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focusMessageId:self.focusMessageIdOnOpen
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maxRangeSize:maxRangeSize];
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}
|
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- (nullable id<ConversationViewItem>)viewItemForUnreadMessagesIndicator
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{
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for (id<ConversationViewItem> viewItem in self.viewItems) {
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if (viewItem.unreadIndicator) {
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return viewItem;
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}
|
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}
|
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return nil;
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}
|
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|
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- (void)clearUnreadMessagesIndicator
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{
|
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OWSAssertIsOnMainThread();
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|
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// TODO: Remove by making unread indicator a view model concern.
|
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id<ConversationViewItem> _Nullable oldIndicatorItem = [self viewItemForUnreadMessagesIndicator];
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if (oldIndicatorItem) {
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// TODO ideally this would be happening within the *same* transaction that caused the unreadMessageIndicator
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// to be cleared.
|
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[self.editingDatabaseConnection
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asyncReadWriteWithBlock:^(YapDatabaseReadWriteTransaction *_Nonnull transaction) {
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[oldIndicatorItem.interaction touchWithTransaction:transaction];
|
||
}];
|
||
}
|
||
|
||
if (self.hasClearedUnreadMessagesIndicator) {
|
||
// ensureDynamicInteractionsForThread is somewhat expensive
|
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// so we don't want to call it unnecessarily.
|
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return;
|
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}
|
||
|
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// Once we've cleared the unread messages indicator,
|
||
// make sure we don't show it again.
|
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self.hasClearedUnreadMessagesIndicator = YES;
|
||
|
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if (self.dynamicInteractions.unreadIndicator) {
|
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// If we've just cleared the "unread messages" indicator,
|
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// update the dynamic interactions.
|
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[self ensureDynamicInteractions];
|
||
}
|
||
}
|
||
|
||
#pragma mark - Storage access
|
||
|
||
- (void)uiDatabaseDidUpdateExternally:(NSNotification *)notification
|
||
{
|
||
OWSAssertIsOnMainThread();
|
||
|
||
OWSLogVerbose(@"");
|
||
|
||
if (self.delegate.shouldObserveDBModifications) {
|
||
// External database modifications can't be converted into incremental updates,
|
||
// so rebuild everything. This is expensive and usually isn't necessary, but
|
||
// there's no alternative.
|
||
//
|
||
// We don't need to do this if we're not observing db modifications since we'll
|
||
// do it when we resume.
|
||
[self resetMappings];
|
||
}
|
||
}
|
||
|
||
- (void)uiDatabaseWillUpdate:(NSNotification *)notification
|
||
{
|
||
[self.delegate conversationViewModelWillUpdate];
|
||
}
|
||
|
||
- (void)uiDatabaseDidUpdate:(NSNotification *)notification
|
||
{
|
||
OWSAssertIsOnMainThread();
|
||
|
||
OWSLogVerbose(@"");
|
||
|
||
NSArray *notifications = notification.userInfo[OWSUIDatabaseConnectionNotificationsKey];
|
||
OWSAssertDebug([notifications isKindOfClass:[NSArray class]]);
|
||
|
||
if (![[self.uiDatabaseConnection ext:TSMessageDatabaseViewExtensionName] hasChangesForGroup:self.thread.uniqueId
|
||
inNotifications:notifications]) {
|
||
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
|
||
[self.messageMappings updateWithTransaction:transaction];
|
||
}];
|
||
|
||
[self.delegate conversationViewModelDidUpdate:ConversationUpdate.minorUpdate];
|
||
return;
|
||
}
|
||
|
||
NSArray<YapDatabaseViewSectionChange *> *sectionChanges = nil;
|
||
NSArray<YapDatabaseViewRowChange *> *rowChanges = nil;
|
||
[[self.uiDatabaseConnection ext:TSMessageDatabaseViewExtensionName] getSectionChanges:§ionChanges
|
||
rowChanges:&rowChanges
|
||
forNotifications:notifications
|
||
withMappings:self.messageMappings];
|
||
|
||
if ([sectionChanges count] == 0 && [rowChanges count] == 0) {
|
||
// YapDatabase will ignore insertions within the message mapping's
|
||
// range that are not within the current mapping's contents. We
|
||
// may need to extend the mapping's contents to reflect the current
|
||
// range.
|
||
[self updateMessageMappingRangeOptions];
|
||
return [self.delegate conversationViewModelDidUpdate:ConversationUpdate.minorUpdate];
|
||
}
|
||
|
||
NSMutableArray<NSString *> *oldItemIdList = [NSMutableArray new];
|
||
for (id<ConversationViewItem> viewItem in self.viewItems) {
|
||
[oldItemIdList addObject:viewItem.itemId];
|
||
}
|
||
|
||
// We need to reload any modified interactions _before_ we call
|
||
// reloadViewItems.
|
||
BOOL hasMalformedRowChange = NO;
|
||
NSMutableSet<NSString *> *updatedItemSet = [NSMutableSet new];
|
||
NSMutableSet<NSString *> *updatedNeighborItemSet = [NSMutableSet new];
|
||
for (YapDatabaseViewRowChange *rowChange in rowChanges) {
|
||
switch (rowChange.type) {
|
||
case YapDatabaseViewChangeUpdate: {
|
||
YapCollectionKey *collectionKey = rowChange.collectionKey;
|
||
if (collectionKey.key) {
|
||
id<ConversationViewItem> _Nullable viewItem = self.viewItemCache[collectionKey.key];
|
||
if (viewItem) {
|
||
[self reloadInteractionForViewItem:viewItem];
|
||
[updatedItemSet addObject:viewItem.itemId];
|
||
if (rowChange.changes == YapDatabaseViewChangedDependency) {
|
||
[updatedNeighborItemSet addObject:viewItem.itemId];
|
||
}
|
||
} else {
|
||
hasMalformedRowChange = YES;
|
||
}
|
||
} else if (rowChange.indexPath && rowChange.originalIndex < self.viewItems.count) {
|
||
// Do nothing, this is a pseudo-update generated due to
|
||
// setCellDrawingDependencyOffsets.
|
||
OWSAssertDebug(rowChange.changes == YapDatabaseViewChangedDependency);
|
||
} else {
|
||
hasMalformedRowChange = YES;
|
||
}
|
||
break;
|
||
}
|
||
case YapDatabaseViewChangeDelete: {
|
||
// Discard cached view items after deletes.
|
||
YapCollectionKey *collectionKey = rowChange.collectionKey;
|
||
if (collectionKey.key) {
|
||
[self.viewItemCache removeObjectForKey:collectionKey.key];
|
||
} else {
|
||
hasMalformedRowChange = YES;
|
||
}
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
if (hasMalformedRowChange) {
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (hasMalformedRowChange) {
|
||
// These errors seems to be very rare; they can only be reproduced
|
||
// using the more extreme actions in the debug UI.
|
||
OWSFailDebug(@"hasMalformedRowChange");
|
||
// resetMappings will call delegate.conversationViewModelDidUpdate.
|
||
[self resetMappings];
|
||
return;
|
||
}
|
||
|
||
if (![self reloadViewItems]) {
|
||
// These errors are rare.
|
||
OWSFailDebug(@"could not reload view items; hard resetting message mappings.");
|
||
// resetMappings will call delegate.conversationViewModelDidUpdate.
|
||
[self resetMappings];
|
||
return;
|
||
}
|
||
|
||
OWSLogVerbose(@"self.viewItems.count: %zd -> %zd", oldItemIdList.count, self.viewItems.count);
|
||
|
||
[self updateViewWithOldItemIdList:oldItemIdList
|
||
updatedItemSet:updatedItemSet
|
||
updatedNeighborItemSet:updatedNeighborItemSet];
|
||
}
|
||
|
||
// A simpler version of the update logic we call when
|
||
// only transient items have changed.
|
||
- (void)updateForTransientItems
|
||
{
|
||
OWSAssertIsOnMainThread();
|
||
|
||
OWSLogVerbose(@"");
|
||
|
||
NSMutableArray<NSString *> *oldItemIdList = [NSMutableArray new];
|
||
for (id<ConversationViewItem> viewItem in self.viewItems) {
|
||
[oldItemIdList addObject:viewItem.itemId];
|
||
}
|
||
|
||
NSUInteger oldViewItemCount = self.viewItems.count;
|
||
if (![self reloadViewItems]) {
|
||
// These errors are rare.
|
||
OWSFailDebug(@"could not reload view items; hard resetting message mappings.");
|
||
// resetMappings will call delegate.conversationViewModelDidUpdate.
|
||
[self resetMappings];
|
||
return;
|
||
}
|
||
|
||
OWSLogVerbose(@"self.viewItems.count: %zd -> %zd", oldViewItemCount, self.viewItems.count);
|
||
|
||
[self updateViewWitholdItemIdList:oldItemIdList
|
||
updatedItemSet:[NSSet set]
|
||
oldViewItemCount:oldViewItemCount
|
||
updatedNeighborItemSet:nil];
|
||
}
|
||
|
||
- (void)updateViewWithOldItemIdList:(NSArray<NSString *> *)oldItemIdList
|
||
updatedItemSet:(NSSet<NSString *> *)updatedItemSet
|
||
updatedNeighborItemSet:(nullable NSMutableSet<NSString *> *)updatedNeighborItemSet
|
||
{
|
||
OWSAssertDebug(oldItemIdList);
|
||
OWSAssertDebug(updatedItemSet);
|
||
|
||
if (oldItemIdList.count != [NSSet setWithArray:oldItemIdList].count) {
|
||
OWSFailDebug(@"Old view item list has duplicates.");
|
||
[self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
return;
|
||
}
|
||
|
||
NSMutableArray<NSString *> *newItemIdList = [NSMutableArray new];
|
||
NSMutableDictionary<NSString *, id<ConversationViewItem>> *newViewItemMap = [NSMutableDictionary new];
|
||
for (id<ConversationViewItem> viewItem in self.viewItems) {
|
||
[newItemIdList addObject:viewItem.itemId];
|
||
newViewItemMap[viewItem.itemId] = viewItem;
|
||
}
|
||
|
||
if (newItemIdList.count != [NSSet setWithArray:newItemIdList].count) {
|
||
OWSFailDebug(@"New view item list has duplicates.");
|
||
[self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
return;
|
||
}
|
||
|
||
NSSet<NSString *> *oldItemIdSet = [NSSet setWithArray:oldItemIdList];
|
||
NSSet<NSString *> *newItemIdSet = [NSSet setWithArray:newItemIdList];
|
||
|
||
// We use sets and dictionaries here to ensure perf.
|
||
NSMutableSet<NSString *> *deletedItemIdSet = [oldItemIdSet mutableCopy];
|
||
[deletedItemIdSet minusSet:newItemIdSet];
|
||
NSMutableSet<NSString *> *insertedItemIdSet = [newItemIdSet mutableCopy];
|
||
[insertedItemIdSet minusSet:oldItemIdSet];
|
||
NSArray<NSString *> *deletedItemIdList = [deletedItemIdSet.allObjects sortedArrayUsingSelector:@selector(compare:)];
|
||
NSArray<NSString *> *insertedItemIdList =
|
||
[insertedItemIdSet.allObjects sortedArrayUsingSelector:@selector(compare:)];
|
||
|
||
// Try to generate a series of "update items" that safely transform
|
||
// the "old item list" into the "new item list".
|
||
NSMutableArray<ConversationUpdateItem *> *updateItems = [NSMutableArray new];
|
||
NSMutableArray<NSString *> *transformedItemList = [oldItemIdList mutableCopy];
|
||
|
||
// 1. Deletes - Always perform deletes before inserts and updates.
|
||
//
|
||
// NOTE: We use reverseObjectEnumerator to ensure that items
|
||
// are deleted in reverse order, to avoid confusion around
|
||
// each deletion affecting the indices of subsequent deletions.
|
||
for (NSString *itemId in deletedItemIdList.reverseObjectEnumerator) {
|
||
OWSAssertDebug([oldItemIdSet containsObject:itemId]);
|
||
OWSAssertDebug(![newItemIdSet containsObject:itemId]);
|
||
|
||
NSUInteger oldIndex = [oldItemIdList indexOfObject:itemId];
|
||
if (oldIndex == NSNotFound) {
|
||
OWSFailDebug(@"Can't find index of deleted view item.");
|
||
return [self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
}
|
||
|
||
[updateItems addObject:[[ConversationUpdateItem alloc] initWithUpdateItemType:ConversationUpdateItemType_Delete
|
||
oldIndex:oldIndex
|
||
newIndex:NSNotFound
|
||
viewItem:nil]];
|
||
[transformedItemList removeObject:itemId];
|
||
}
|
||
|
||
// 2. Inserts - Always perform inserts before updates.
|
||
//
|
||
// NOTE: We DO NOT use reverseObjectEnumerator.
|
||
for (NSString *itemId in insertedItemIdList) {
|
||
OWSAssertDebug(![oldItemIdSet containsObject:itemId]);
|
||
OWSAssertDebug([newItemIdSet containsObject:itemId]);
|
||
|
||
NSUInteger newIndex = [newItemIdList indexOfObject:itemId];
|
||
if (newIndex == NSNotFound) {
|
||
OWSFailDebug(@"Can't find index of inserted view item.");
|
||
return [self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
}
|
||
id<ConversationViewItem> _Nullable viewItem = newViewItemMap[itemId];
|
||
if (!viewItem) {
|
||
OWSFailDebug(@"Can't find inserted view item.");
|
||
return [self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
}
|
||
|
||
[updateItems addObject:[[ConversationUpdateItem alloc] initWithUpdateItemType:ConversationUpdateItemType_Insert
|
||
oldIndex:NSNotFound
|
||
newIndex:newIndex
|
||
viewItem:viewItem]];
|
||
[transformedItemList insertObject:itemId atIndex:newIndex];
|
||
}
|
||
|
||
if (![newItemIdList isEqualToArray:transformedItemList]) {
|
||
// We should be able to represent all transformations as a series of
|
||
// inserts, updates and deletes - moves should not be necessary.
|
||
//
|
||
// TODO: The unread indicator might end up being an exception.
|
||
OWSLogWarn(@"New and updated view item lists don't match.");
|
||
return [self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
}
|
||
|
||
// 3. Updates.
|
||
//
|
||
// NOTE: Order doesn't matter.
|
||
for (NSString *itemId in updatedItemSet) {
|
||
if (![newItemIdList containsObject:itemId]) {
|
||
OWSFailDebug(@"Updated view item not in new view item list.");
|
||
continue;
|
||
}
|
||
if ([insertedItemIdList containsObject:itemId]) {
|
||
continue;
|
||
}
|
||
NSUInteger oldIndex = [oldItemIdList indexOfObject:itemId];
|
||
if (oldIndex == NSNotFound) {
|
||
OWSFailDebug(@"Can't find old index of updated view item.");
|
||
return [self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
}
|
||
NSUInteger newIndex = [newItemIdList indexOfObject:itemId];
|
||
if (newIndex == NSNotFound) {
|
||
OWSFailDebug(@"Can't find new index of updated view item.");
|
||
return [self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
}
|
||
id<ConversationViewItem> _Nullable viewItem = newViewItemMap[itemId];
|
||
if (!viewItem) {
|
||
OWSFailDebug(@"Can't find inserted view item.");
|
||
return [self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
}
|
||
[updateItems addObject:[[ConversationUpdateItem alloc] initWithUpdateItemType:ConversationUpdateItemType_Update
|
||
oldIndex:oldIndex
|
||
newIndex:newIndex
|
||
viewItem:viewItem]];
|
||
}
|
||
|
||
BOOL shouldAnimateUpdates = [self shouldAnimateUpdateItems:updateItems
|
||
oldViewItemCount:oldItemIdList.count
|
||
updatedNeighborItemSet:updatedNeighborItemSet];
|
||
|
||
return [self.delegate
|
||
conversationViewModelDidUpdate:[ConversationUpdate diffUpdateWithUpdateItems:updateItems
|
||
shouldAnimateUpdates:shouldAnimateUpdates]];
|
||
}
|
||
|
||
- (BOOL)shouldAnimateUpdateItems:(NSArray<ConversationUpdateItem *> *)updateItems
|
||
oldViewItemCount:(NSUInteger)oldViewItemCount
|
||
updatedNeighborItemSet:(nullable NSMutableSet<NSString *> *)updatedNeighborItemSet
|
||
{
|
||
OWSAssertDebug(updateItems);
|
||
|
||
// If user sends a new outgoing message, don't animate the change.
|
||
BOOL isOnlyModifyingLastMessage = YES;
|
||
for (ConversationUpdateItem *updateItem in updateItems) {
|
||
switch (updateItem.updateItemType) {
|
||
case ConversationUpdateItemType_Delete:
|
||
isOnlyModifyingLastMessage = NO;
|
||
break;
|
||
case ConversationUpdateItemType_Insert: {
|
||
id<ConversationViewItem> viewItem = updateItem.viewItem;
|
||
OWSAssertDebug(viewItem);
|
||
if (([viewItem.interaction isKindOfClass:[TSIncomingMessage class]] ||
|
||
[viewItem.interaction isKindOfClass:[TSOutgoingMessage class]])
|
||
&& updateItem.newIndex >= oldViewItemCount) {
|
||
continue;
|
||
}
|
||
isOnlyModifyingLastMessage = NO;
|
||
break;
|
||
}
|
||
case ConversationUpdateItemType_Update: {
|
||
id<ConversationViewItem> viewItem = updateItem.viewItem;
|
||
if ([updatedNeighborItemSet containsObject:viewItem.itemId]) {
|
||
continue;
|
||
}
|
||
OWSAssertDebug(viewItem);
|
||
if (([viewItem.interaction isKindOfClass:[TSIncomingMessage class]] ||
|
||
[viewItem.interaction isKindOfClass:[TSOutgoingMessage class]])
|
||
&& updateItem.newIndex >= oldViewItemCount) {
|
||
continue;
|
||
}
|
||
isOnlyModifyingLastMessage = NO;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
BOOL shouldAnimateRowUpdates = !isOnlyModifyingLastMessage;
|
||
return shouldAnimateRowUpdates;
|
||
}
|
||
|
||
- (void)createNewMessageMappings
|
||
{
|
||
if (self.thread.uniqueId.length > 0) {
|
||
self.messageMappings = [[YapDatabaseViewMappings alloc] initWithGroups:@[ self.thread.uniqueId ]
|
||
view:TSMessageDatabaseViewExtensionName];
|
||
} else {
|
||
OWSFailDebug(@"uniqueId unexpectedly empty for thread: %@", self.thread);
|
||
self.messageMappings =
|
||
[[YapDatabaseViewMappings alloc] initWithGroups:@[] view:TSMessageDatabaseViewExtensionName];
|
||
}
|
||
|
||
// Cells' appearance can depend on adjacent cells in both directions.
|
||
//
|
||
// TODO: We could do the same thing in our logic to generate "update items"
|
||
// in updateViewWithOldItemIdList.
|
||
[self.messageMappings setCellDrawingDependencyOffsets:[NSSet setWithArray:@[
|
||
@(-1),
|
||
@(+1),
|
||
]]
|
||
forGroup:self.thread.uniqueId];
|
||
|
||
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
|
||
[self.messageMappings updateWithTransaction:transaction];
|
||
}];
|
||
// We need to impose the range restrictions on the mappings immediately to avoid
|
||
// doing a great deal of unnecessary work and causing a perf hotspot.
|
||
[self updateMessageMappingRangeOptions];
|
||
}
|
||
|
||
- (void)resetMappings
|
||
{
|
||
OWSAssertDebug(self.messageMappings);
|
||
|
||
if (self.messageMappings != nil) {
|
||
// Make sure our mapping and range state is up-to-date.
|
||
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
|
||
[self.messageMappings updateWithTransaction:transaction];
|
||
}];
|
||
[self updateMessageMappingRangeOptions];
|
||
}
|
||
self.collapseCutoffDate = [NSDate new];
|
||
|
||
[self ensureDynamicInteractions];
|
||
|
||
// There appears to be a bug in YapDatabase that sometimes delays modifications
|
||
// made in another process (e.g. the SAE) from showing up in other processes.
|
||
// There's a simple workaround: a trivial write to the database flushes changes
|
||
// made from other processes.
|
||
[self.editingDatabaseConnection asyncReadWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
|
||
[transaction setObject:[NSUUID UUID].UUIDString forKey:@"conversation_view_noop_mod" inCollection:@"temp"];
|
||
}];
|
||
|
||
[self.delegate conversationViewModelDidUpdate:ConversationUpdate.reloadUpdate];
|
||
}
|
||
|
||
#pragma mark - View Items
|
||
|
||
// This is a key method. It builds or rebuilds the list of
|
||
// cell view models.
|
||
//
|
||
// Returns NO on error.
|
||
- (BOOL)reloadViewItems
|
||
{
|
||
NSMutableArray<id<ConversationViewItem>> *viewItems = [NSMutableArray new];
|
||
NSMutableDictionary<NSString *, id<ConversationViewItem>> *viewItemCache = [NSMutableDictionary new];
|
||
|
||
NSUInteger count = [self.messageMappings numberOfItemsInSection:0];
|
||
BOOL isGroupThread = self.thread.isGroupThread;
|
||
ConversationStyle *conversationStyle = self.delegate.conversationStyle;
|
||
|
||
__block BOOL hasError = NO;
|
||
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
|
||
YapDatabaseViewTransaction *viewTransaction = [transaction ext:TSMessageDatabaseViewExtensionName];
|
||
OWSAssertDebug(viewTransaction);
|
||
for (NSUInteger row = 0; row < count; row++) {
|
||
TSInteraction *interaction =
|
||
[viewTransaction objectAtRow:row inSection:0 withMappings:self.messageMappings];
|
||
if (!interaction) {
|
||
OWSFailDebug(
|
||
@"missing interaction in message mappings: %lu / %lu.", (unsigned long)row, (unsigned long)count);
|
||
// TODO: Add analytics.
|
||
hasError = YES;
|
||
continue;
|
||
}
|
||
if (!interaction.uniqueId) {
|
||
OWSFailDebug(@"invalid interaction in message mappings: %lu / %lu: %@.",
|
||
(unsigned long)row,
|
||
(unsigned long)count,
|
||
interaction);
|
||
// TODO: Add analytics.
|
||
hasError = YES;
|
||
continue;
|
||
}
|
||
|
||
id<ConversationViewItem> _Nullable viewItem = self.viewItemCache[interaction.uniqueId];
|
||
if (!viewItem) {
|
||
viewItem = [[ConversationInteractionViewItem alloc] initWithInteraction:interaction
|
||
isGroupThread:isGroupThread
|
||
transaction:transaction
|
||
conversationStyle:conversationStyle];
|
||
}
|
||
[viewItems addObject:viewItem];
|
||
OWSAssertDebug(!viewItemCache[interaction.uniqueId]);
|
||
viewItemCache[interaction.uniqueId] = viewItem;
|
||
}
|
||
|
||
if (self.typingIndicatorsRecipient) {
|
||
id<ConversationViewItem> _Nullable lastViewItem = viewItems.lastObject;
|
||
uint64_t typingIndicatorTimestamp = (lastViewItem ? lastViewItem.interaction.timestamp + 1 : 1);
|
||
TSInteraction *interaction =
|
||
[[OWSTypingIndicatorInteraction alloc] initWithThread:self.thread
|
||
timestamp:typingIndicatorTimestamp
|
||
recipientId:self.typingIndicatorsRecipient];
|
||
id<ConversationViewItem> _Nullable viewItem = self.viewItemCache[interaction.uniqueId];
|
||
if (!viewItem) {
|
||
viewItem = [[ConversationInteractionViewItem alloc] initWithInteraction:interaction
|
||
isGroupThread:isGroupThread
|
||
transaction:transaction
|
||
conversationStyle:conversationStyle];
|
||
}
|
||
[viewItems addObject:viewItem];
|
||
OWSAssertDebug(!viewItemCache[interaction.uniqueId]);
|
||
viewItemCache[interaction.uniqueId] = viewItem;
|
||
}
|
||
}];
|
||
|
||
// Flag to ensure that we only increment once per launch.
|
||
if (hasError) {
|
||
OWSLogWarn(@"incrementing version of: %@", TSMessageDatabaseViewExtensionName);
|
||
[OWSPrimaryStorage incrementVersionOfDatabaseExtension:TSMessageDatabaseViewExtensionName];
|
||
}
|
||
|
||
// Update the "break" properties (shouldShowDate and unreadIndicator) of the view items.
|
||
BOOL shouldShowDateOnNextViewItem = YES;
|
||
uint64_t previousViewItemTimestamp = 0;
|
||
OWSUnreadIndicator *_Nullable unreadIndicator = self.dynamicInteractions.unreadIndicator;
|
||
uint64_t collapseCutoffTimestamp = [NSDate ows_millisecondsSince1970ForDate:self.collapseCutoffDate];
|
||
|
||
BOOL hasPlacedUnreadIndicator = NO;
|
||
for (id<ConversationViewItem> viewItem in viewItems) {
|
||
BOOL canShowDate = NO;
|
||
switch (viewItem.interaction.interactionType) {
|
||
case OWSInteractionType_Unknown:
|
||
case OWSInteractionType_Offer:
|
||
case OWSInteractionType_TypingIndicator:
|
||
canShowDate = NO;
|
||
break;
|
||
case OWSInteractionType_IncomingMessage:
|
||
case OWSInteractionType_OutgoingMessage:
|
||
case OWSInteractionType_Error:
|
||
case OWSInteractionType_Info:
|
||
case OWSInteractionType_Call:
|
||
canShowDate = YES;
|
||
break;
|
||
}
|
||
|
||
uint64_t viewItemTimestamp = viewItem.interaction.timestampForSorting;
|
||
OWSAssertDebug(viewItemTimestamp > 0);
|
||
|
||
BOOL shouldShowDate = NO;
|
||
if (previousViewItemTimestamp == 0) {
|
||
shouldShowDateOnNextViewItem = YES;
|
||
} else if (![DateUtil isSameDayWithTimestamp:previousViewItemTimestamp timestamp:viewItemTimestamp]) {
|
||
shouldShowDateOnNextViewItem = YES;
|
||
}
|
||
|
||
if (shouldShowDateOnNextViewItem && canShowDate) {
|
||
shouldShowDate = YES;
|
||
shouldShowDateOnNextViewItem = NO;
|
||
}
|
||
|
||
viewItem.shouldShowDate = shouldShowDate;
|
||
|
||
previousViewItemTimestamp = viewItemTimestamp;
|
||
|
||
// When a conversation without unread messages receives an incoming message,
|
||
// we call ensureDynamicInteractions to ensure that the unread indicator (etc.)
|
||
// state is updated accordingly. However this is done in a separate transaction.
|
||
// We don't want to show the incoming message _without_ an unread indicator and
|
||
// then immediately re-render it _with_ an unread indicator.
|
||
//
|
||
// To avoid this, we use a temporary instance of OWSUnreadIndicator whenever
|
||
// we find an unread message that _should_ have an unread indicator, but no
|
||
// unread indicator exists yet on dynamicInteractions.
|
||
BOOL isItemUnread = ([viewItem.interaction conformsToProtocol:@protocol(OWSReadTracking)]
|
||
&& !((id<OWSReadTracking>)viewItem.interaction).wasRead);
|
||
if (isItemUnread && !unreadIndicator && !hasPlacedUnreadIndicator && !self.hasClearedUnreadMessagesIndicator) {
|
||
|
||
unreadIndicator =
|
||
[[OWSUnreadIndicator alloc] initUnreadIndicatorWithTimestamp:viewItem.interaction.timestamp
|
||
hasMoreUnseenMessages:NO
|
||
missingUnseenSafetyNumberChangeCount:0
|
||
unreadIndicatorPosition:0
|
||
firstUnseenInteractionTimestamp:viewItem.interaction.timestamp];
|
||
}
|
||
|
||
// Place the unread indicator onto the first appropriate view item,
|
||
// if any.
|
||
if (unreadIndicator && viewItem.interaction.timestampForSorting >= unreadIndicator.timestamp) {
|
||
viewItem.unreadIndicator = unreadIndicator;
|
||
unreadIndicator = nil;
|
||
hasPlacedUnreadIndicator = YES;
|
||
} else {
|
||
viewItem.unreadIndicator = nil;
|
||
}
|
||
}
|
||
if (unreadIndicator) {
|
||
// This isn't necessarily a bug - all of the interactions after the
|
||
// unread indicator may have disappeared or been deleted.
|
||
OWSLogWarn(@"Couldn't find an interaction to hang the unread indicator on.");
|
||
}
|
||
|
||
// Update the properties of the view items.
|
||
//
|
||
// NOTE: This logic uses the break properties which are set in the previous pass.
|
||
for (NSUInteger i = 0; i < viewItems.count; i++) {
|
||
id<ConversationViewItem> viewItem = viewItems[i];
|
||
id<ConversationViewItem> _Nullable previousViewItem = (i > 0 ? viewItems[i - 1] : nil);
|
||
id<ConversationViewItem> _Nullable nextViewItem = (i + 1 < viewItems.count ? viewItems[i + 1] : nil);
|
||
BOOL shouldShowSenderAvatar = NO;
|
||
BOOL shouldHideFooter = NO;
|
||
BOOL isFirstInCluster = YES;
|
||
BOOL isLastInCluster = YES;
|
||
NSAttributedString *_Nullable senderName = nil;
|
||
|
||
OWSInteractionType interactionType = viewItem.interaction.interactionType;
|
||
NSString *timestampText = [DateUtil formatTimestampShort:viewItem.interaction.timestamp];
|
||
|
||
if (interactionType == OWSInteractionType_OutgoingMessage) {
|
||
TSOutgoingMessage *outgoingMessage = (TSOutgoingMessage *)viewItem.interaction;
|
||
MessageReceiptStatus receiptStatus =
|
||
[MessageRecipientStatusUtils recipientStatusWithOutgoingMessage:outgoingMessage];
|
||
BOOL isDisappearingMessage = outgoingMessage.isExpiringMessage;
|
||
|
||
if (nextViewItem && nextViewItem.interaction.interactionType == interactionType) {
|
||
TSOutgoingMessage *nextOutgoingMessage = (TSOutgoingMessage *)nextViewItem.interaction;
|
||
MessageReceiptStatus nextReceiptStatus =
|
||
[MessageRecipientStatusUtils recipientStatusWithOutgoingMessage:nextOutgoingMessage];
|
||
NSString *nextTimestampText = [DateUtil formatTimestampShort:nextViewItem.interaction.timestamp];
|
||
|
||
// We can skip the "outgoing message status" footer if the next message
|
||
// has the same footer and no "date break" separates us...
|
||
// ...but always show "failed to send" status
|
||
// ...and always show the "disappearing messages" animation.
|
||
shouldHideFooter
|
||
= ([timestampText isEqualToString:nextTimestampText] && receiptStatus == nextReceiptStatus
|
||
&& outgoingMessage.messageState != TSOutgoingMessageStateFailed
|
||
&& outgoingMessage.messageState != TSOutgoingMessageStateSending && !nextViewItem.hasCellHeader
|
||
&& !isDisappearingMessage);
|
||
}
|
||
|
||
// clustering
|
||
if (previousViewItem == nil) {
|
||
isFirstInCluster = YES;
|
||
} else if (viewItem.hasCellHeader) {
|
||
isFirstInCluster = YES;
|
||
} else {
|
||
isFirstInCluster = previousViewItem.interaction.interactionType != OWSInteractionType_OutgoingMessage;
|
||
}
|
||
|
||
if (nextViewItem == nil) {
|
||
isLastInCluster = YES;
|
||
} else if (nextViewItem.hasCellHeader) {
|
||
isLastInCluster = YES;
|
||
} else {
|
||
isLastInCluster = nextViewItem.interaction.interactionType != OWSInteractionType_OutgoingMessage;
|
||
}
|
||
} else if (interactionType == OWSInteractionType_IncomingMessage) {
|
||
|
||
TSIncomingMessage *incomingMessage = (TSIncomingMessage *)viewItem.interaction;
|
||
NSString *incomingSenderId = incomingMessage.authorId;
|
||
OWSAssertDebug(incomingSenderId.length > 0);
|
||
BOOL isDisappearingMessage = incomingMessage.isExpiringMessage;
|
||
|
||
NSString *_Nullable nextIncomingSenderId = nil;
|
||
if (nextViewItem && nextViewItem.interaction.interactionType == interactionType) {
|
||
TSIncomingMessage *nextIncomingMessage = (TSIncomingMessage *)nextViewItem.interaction;
|
||
nextIncomingSenderId = nextIncomingMessage.authorId;
|
||
OWSAssertDebug(nextIncomingSenderId.length > 0);
|
||
}
|
||
|
||
if (nextViewItem && nextViewItem.interaction.interactionType == interactionType) {
|
||
NSString *nextTimestampText = [DateUtil formatTimestampShort:nextViewItem.interaction.timestamp];
|
||
// We can skip the "incoming message status" footer in a cluster if the next message
|
||
// has the same footer and no "date break" separates us.
|
||
// ...but always show the "disappearing messages" animation.
|
||
shouldHideFooter = ([timestampText isEqualToString:nextTimestampText] && !nextViewItem.hasCellHeader &&
|
||
[NSObject isNullableObject:nextIncomingSenderId equalTo:incomingSenderId]
|
||
&& !isDisappearingMessage);
|
||
}
|
||
|
||
// clustering
|
||
if (previousViewItem == nil) {
|
||
isFirstInCluster = YES;
|
||
} else if (viewItem.hasCellHeader) {
|
||
isFirstInCluster = YES;
|
||
} else if (previousViewItem.interaction.interactionType != OWSInteractionType_IncomingMessage) {
|
||
isFirstInCluster = YES;
|
||
} else {
|
||
TSIncomingMessage *previousIncomingMessage = (TSIncomingMessage *)previousViewItem.interaction;
|
||
isFirstInCluster = ![incomingSenderId isEqual:previousIncomingMessage.authorId];
|
||
}
|
||
|
||
if (nextViewItem == nil) {
|
||
isLastInCluster = YES;
|
||
} else if (nextViewItem.interaction.interactionType != OWSInteractionType_IncomingMessage) {
|
||
isLastInCluster = YES;
|
||
} else if (nextViewItem.hasCellHeader) {
|
||
isLastInCluster = YES;
|
||
} else {
|
||
TSIncomingMessage *nextIncomingMessage = (TSIncomingMessage *)nextViewItem.interaction;
|
||
isLastInCluster = ![incomingSenderId isEqual:nextIncomingMessage.authorId];
|
||
}
|
||
|
||
if (viewItem.isGroupThread) {
|
||
// Show the sender name for incoming group messages unless
|
||
// the previous message has the same sender name and
|
||
// no "date break" separates us.
|
||
BOOL shouldShowSenderName = YES;
|
||
if (previousViewItem && previousViewItem.interaction.interactionType == interactionType) {
|
||
|
||
TSIncomingMessage *previousIncomingMessage = (TSIncomingMessage *)previousViewItem.interaction;
|
||
NSString *previousIncomingSenderId = previousIncomingMessage.authorId;
|
||
OWSAssertDebug(previousIncomingSenderId.length > 0);
|
||
|
||
shouldShowSenderName
|
||
= (![NSObject isNullableObject:previousIncomingSenderId equalTo:incomingSenderId]
|
||
|| viewItem.hasCellHeader);
|
||
}
|
||
if (shouldShowSenderName) {
|
||
senderName = [self.contactsManager
|
||
attributedContactOrProfileNameForPhoneIdentifier:incomingSenderId
|
||
primaryAttributes:[OWSMessageBubbleView
|
||
senderNamePrimaryAttributes]
|
||
secondaryAttributes:[OWSMessageBubbleView
|
||
senderNameSecondaryAttributes]];
|
||
}
|
||
|
||
// Show the sender avatar for incoming group messages unless
|
||
// the next message has the same sender avatar and
|
||
// no "date break" separates us.
|
||
shouldShowSenderAvatar = YES;
|
||
if (nextViewItem && nextViewItem.interaction.interactionType == interactionType) {
|
||
shouldShowSenderAvatar = (![NSObject isNullableObject:nextIncomingSenderId equalTo:incomingSenderId]
|
||
|| nextViewItem.hasCellHeader);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (viewItem.interaction.timestampForSorting > collapseCutoffTimestamp) {
|
||
shouldHideFooter = NO;
|
||
}
|
||
|
||
viewItem.isFirstInCluster = isFirstInCluster;
|
||
viewItem.isLastInCluster = isLastInCluster;
|
||
viewItem.shouldShowSenderAvatar = shouldShowSenderAvatar;
|
||
viewItem.shouldHideFooter = shouldHideFooter;
|
||
viewItem.senderName = senderName;
|
||
}
|
||
|
||
self.viewItems = viewItems;
|
||
self.viewItemCache = viewItemCache;
|
||
|
||
return !hasError;
|
||
}
|
||
|
||
// Whenever an interaction is modified, we need to reload it from the DB
|
||
// and update the corresponding view item.
|
||
- (void)reloadInteractionForViewItem:(id<ConversationViewItem>)viewItem
|
||
{
|
||
OWSAssertIsOnMainThread();
|
||
OWSAssertDebug(viewItem);
|
||
|
||
// This should never happen, but don't crash in production if we have a bug.
|
||
if (!viewItem) {
|
||
return;
|
||
}
|
||
|
||
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
|
||
TSInteraction *_Nullable interaction =
|
||
[TSInteraction fetchObjectWithUniqueID:viewItem.interaction.uniqueId transaction:transaction];
|
||
if (!interaction) {
|
||
OWSFailDebug(@"could not reload interaction");
|
||
} else {
|
||
[viewItem replaceInteraction:interaction transaction:transaction];
|
||
}
|
||
}];
|
||
}
|
||
|
||
- (nullable NSIndexPath *)ensureLoadWindowContainsQuotedReply:(OWSQuotedReplyModel *)quotedReply
|
||
{
|
||
OWSAssertIsOnMainThread();
|
||
OWSAssertDebug(quotedReply);
|
||
OWSAssertDebug(quotedReply.timestamp > 0);
|
||
OWSAssertDebug(quotedReply.authorId.length > 0);
|
||
|
||
// TODO:
|
||
// We try to find the index of the item within the current thread's
|
||
// interactions that includes the "quoted interaction".
|
||
//
|
||
// NOTE: There are two indices:
|
||
//
|
||
// * The "group index" of the member of the database views group at
|
||
// the db conneciton's current checkpoint.
|
||
// * The "index row/section" in the message mapping.
|
||
//
|
||
// NOTE: Since the range _IS NOT_ filtered by author,
|
||
// and timestamp collisions are possible, it's possible
|
||
// for:
|
||
//
|
||
// * The range to include more than the "quoted interaction".
|
||
// * The range to be non-empty but NOT include the "quoted interaction",
|
||
// although this would be a bug.
|
||
__block TSInteraction *_Nullable quotedInteraction;
|
||
__block NSUInteger threadInteractionCount = 0;
|
||
__block NSNumber *_Nullable groupIndex = nil;
|
||
|
||
if (quotedReply.isRemotelySourced) {
|
||
return nil;
|
||
}
|
||
|
||
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
|
||
quotedInteraction = [ThreadUtil findInteractionInThreadByTimestamp:quotedReply.timestamp
|
||
authorId:quotedReply.authorId
|
||
threadUniqueId:self.thread.uniqueId
|
||
transaction:transaction];
|
||
if (!quotedInteraction) {
|
||
return;
|
||
}
|
||
|
||
YapDatabaseAutoViewTransaction *_Nullable extension =
|
||
[transaction extension:TSMessageDatabaseViewExtensionName];
|
||
if (!extension) {
|
||
OWSFailDebug(@"Couldn't load view.");
|
||
return;
|
||
}
|
||
|
||
threadInteractionCount = [extension numberOfItemsInGroup:self.thread.uniqueId];
|
||
|
||
groupIndex = [self findGroupIndexOfThreadInteraction:quotedInteraction transaction:transaction];
|
||
}];
|
||
|
||
if (!quotedInteraction || !groupIndex) {
|
||
return nil;
|
||
}
|
||
|
||
NSUInteger indexRow = 0;
|
||
NSUInteger indexSection = 0;
|
||
BOOL isInMappings = [self.messageMappings getRow:&indexRow
|
||
section:&indexSection
|
||
forIndex:groupIndex.unsignedIntegerValue
|
||
inGroup:self.thread.uniqueId];
|
||
|
||
if (!isInMappings) {
|
||
NSInteger desiredWindowSize = MAX(0, 1 + (NSInteger)threadInteractionCount - groupIndex.integerValue);
|
||
NSUInteger oldLoadWindowSize = [self.messageMappings numberOfItemsInGroup:self.thread.uniqueId];
|
||
NSInteger additionalItemsToLoad = MAX(0, desiredWindowSize - (NSInteger)oldLoadWindowSize);
|
||
if (additionalItemsToLoad < 1) {
|
||
OWSLogError(@"Couldn't determine how to load quoted reply.");
|
||
return nil;
|
||
}
|
||
|
||
// Try to load more messages so that the quoted message
|
||
// is in the load window.
|
||
//
|
||
// This may fail if the quoted message is very old, in which
|
||
// case we'll load the max number of messages.
|
||
[self loadNMoreMessages:(NSUInteger)additionalItemsToLoad];
|
||
|
||
// `loadNMoreMessages` will reset the mapping and possibly
|
||
// integrate new changes, so we need to reload the "group index"
|
||
// of the quoted message.
|
||
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
|
||
groupIndex = [self findGroupIndexOfThreadInteraction:quotedInteraction transaction:transaction];
|
||
}];
|
||
|
||
if (!quotedInteraction || !groupIndex) {
|
||
OWSLogError(@"Failed to find quoted reply in group.");
|
||
return nil;
|
||
}
|
||
|
||
isInMappings = [self.messageMappings getRow:&indexRow
|
||
section:&indexSection
|
||
forIndex:groupIndex.unsignedIntegerValue
|
||
inGroup:self.thread.uniqueId];
|
||
|
||
if (!isInMappings) {
|
||
OWSLogError(@"Could not load quoted reply into mapping.");
|
||
return nil;
|
||
}
|
||
}
|
||
|
||
// The mapping indices and view item indices don't always align for corrupt mappings.
|
||
__block TSInteraction *_Nullable interaction;
|
||
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
|
||
YapDatabaseViewTransaction *viewTransaction = [transaction ext:TSMessageDatabaseViewExtensionName];
|
||
OWSAssertDebug(viewTransaction);
|
||
interaction = [viewTransaction objectAtRow:indexRow inSection:indexSection withMappings:self.messageMappings];
|
||
}];
|
||
if (!interaction) {
|
||
OWSFailDebug(@"Could not locate interaction for quoted reply.");
|
||
return nil;
|
||
}
|
||
id<ConversationViewItem> _Nullable viewItem = self.viewItemCache[interaction.uniqueId];
|
||
if (!viewItem) {
|
||
OWSFailDebug(@"Could not locate view item for quoted reply.");
|
||
return nil;
|
||
}
|
||
NSUInteger viewItemIndex = [self.viewItems indexOfObject:viewItem];
|
||
if (viewItemIndex == NSNotFound) {
|
||
OWSFailDebug(@"Could not locate view item index for quoted reply.");
|
||
return nil;
|
||
}
|
||
return [NSIndexPath indexPathForRow:(NSInteger)viewItemIndex inSection:0];
|
||
}
|
||
|
||
- (nullable NSNumber *)findGroupIndexOfThreadInteraction:(TSInteraction *)interaction
|
||
transaction:(YapDatabaseReadTransaction *)transaction
|
||
{
|
||
OWSAssertDebug(interaction);
|
||
OWSAssertDebug(transaction);
|
||
|
||
YapDatabaseAutoViewTransaction *_Nullable extension = [transaction extension:TSMessageDatabaseViewExtensionName];
|
||
if (!extension) {
|
||
OWSFailDebug(@"Couldn't load view.");
|
||
return nil;
|
||
}
|
||
|
||
NSUInteger groupIndex = 0;
|
||
BOOL foundInGroup =
|
||
[extension getGroup:nil index:&groupIndex forKey:interaction.uniqueId inCollection:TSInteraction.collection];
|
||
if (!foundInGroup) {
|
||
OWSLogError(@"Couldn't find quoted message in group.");
|
||
return nil;
|
||
}
|
||
return @(groupIndex);
|
||
}
|
||
|
||
- (void)typingIndicatorStateDidChange:(NSNotification *)notification
|
||
{
|
||
OWSAssertIsOnMainThread();
|
||
|
||
self.typingIndicatorsRecipient = [self.typingIndicators typingIndicatorsForThread:self.thread];
|
||
}
|
||
|
||
- (void)setTypingIndicatorsRecipient:(nullable NSString *)typingIndicatorsRecipient
|
||
{
|
||
OWSAssertIsOnMainThread();
|
||
|
||
BOOL didChange = ![NSObject isNullableObject:typingIndicatorsRecipient equalTo:_typingIndicatorsRecipient];
|
||
|
||
_typingIndicatorsRecipient = typingIndicatorsRecipient;
|
||
|
||
// Update the view items if necessary.
|
||
// We don't have to do this if they haven't been configured yet.
|
||
if (didChange && self.viewItems != nil) {
|
||
[self updateForTransientItems];
|
||
}
|
||
}
|
||
|
||
@end
|
||
|
||
NS_ASSUME_NONNULL_END
|