session-ios/Signal/src/ViewControllers/ConversationView/ConversationViewController.m

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//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//
#import "ConversationViewController.h"
#import "AppDelegate.h"
#import "BlockListUIUtils.h"
#import "BlockListViewController.h"
#import "ContactsViewHelper.h"
#import "ConversationCollectionView.h"
#import "ConversationHeaderView.h"
#import "ConversationInputTextView.h"
#import "ConversationInputToolbar.h"
#import "ConversationScrollButton.h"
#import "ConversationViewCell.h"
#import "ConversationViewItem.h"
#import "ConversationViewLayout.h"
#import "DateUtil.h"
#import "DebugUITableViewController.h"
#import "FingerprintViewController.h"
#import "NSAttributedString+OWS.h"
#import "NewGroupViewController.h"
#import "OWSAudioPlayer.h"
#import "OWSContactOffersCell.h"
#import "OWSConversationSettingsViewController.h"
#import "OWSConversationSettingsViewDelegate.h"
#import "OWSDisappearingMessagesJob.h"
#import "OWSMath.h"
#import "OWSMessageCell.h"
#import "OWSSystemMessageCell.h"
#import "OWSUnreadIndicatorCell.h"
#import "Signal-Swift.h"
#import "SignalKeyingStorage.h"
#import "TSAttachmentPointer.h"
#import "TSCall.h"
#import "TSContactThread.h"
#import "TSDatabaseView.h"
#import "TSErrorMessage.h"
#import "TSGroupThread.h"
#import "TSIncomingMessage.h"
#import "TSInfoMessage.h"
#import "TSInvalidIdentityKeyErrorMessage.h"
#import "UIFont+OWS.h"
#import "UIViewController+Permissions.h"
#import "ViewControllerUtils.h"
#import <AVFoundation/AVFoundation.h>
#import <AddressBookUI/AddressBookUI.h>
#import <AssetsLibrary/AssetsLibrary.h>
#import <ContactsUI/CNContactViewController.h>
#import <JSQMessagesViewController/JSQMessagesBubbleImage.h>
#import <JSQMessagesViewController/JSQMessagesBubbleImageFactory.h>
#import <JSQMessagesViewController/JSQMessagesCollectionViewFlowLayoutInvalidationContext.h>
#import <JSQMessagesViewController/JSQMessagesCollectionViewLayoutAttributes.h>
#import <JSQMessagesViewController/JSQMessagesTimestampFormatter.h>
#import <JSQMessagesViewController/JSQSystemSoundPlayer+JSQMessages.h>
#import <JSQMessagesViewController/UIColor+JSQMessages.h>
#import <JSQSystemSoundPlayer/JSQSystemSoundPlayer.h>
#import <MobileCoreServices/UTCoreTypes.h>
#import <PromiseKit/AnyPromise.h>
#import <SignalMessaging/Environment.h>
#import <SignalMessaging/NSString+OWS.h>
#import <SignalMessaging/OWSContactOffersInteraction.h>
#import <SignalMessaging/OWSContactsManager.h>
#import <SignalMessaging/OWSFormat.h>
#import <SignalMessaging/OWSUserProfile.h>
#import <SignalMessaging/TSUnreadIndicatorInteraction.h>
#import <SignalMessaging/ThreadUtil.h>
#import <SignalMessaging/UIUtil.h>
#import <SignalMessaging/UIViewController+OWS.h>
#import <SignalServiceKit/ContactsUpdater.h>
#import <SignalServiceKit/MimeTypeUtil.h>
#import <SignalServiceKit/NSDate+OWS.h>
#import <SignalServiceKit/NSTimer+OWS.h>
#import <SignalServiceKit/OWSAddToContactsOfferMessage.h>
#import <SignalServiceKit/OWSAddToProfileWhitelistOfferMessage.h>
#import <SignalServiceKit/OWSAttachmentsProcessor.h>
#import <SignalServiceKit/OWSBlockingManager.h>
#import <SignalServiceKit/OWSDisappearingMessagesConfiguration.h>
#import <SignalServiceKit/OWSIdentityManager.h>
#import <SignalServiceKit/OWSMessageManager.h>
#import <SignalServiceKit/OWSMessageSender.h>
#import <SignalServiceKit/OWSMessageUtils.h>
#import <SignalServiceKit/OWSReadReceiptManager.h>
#import <SignalServiceKit/OWSVerificationStateChangeMessage.h>
#import <SignalServiceKit/SignalRecipient.h>
#import <SignalServiceKit/TSAccountManager.h>
#import <SignalServiceKit/TSGroupModel.h>
#import <SignalServiceKit/TSInvalidIdentityKeyReceivingErrorMessage.h>
#import <SignalServiceKit/TSNetworkManager.h>
#import <SignalServiceKit/TSQuotedMessage.h>
#import <SignalServiceKit/Threading.h>
#import <YapDatabase/YapDatabase.h>
#import <YapDatabase/YapDatabaseViewChange.h>
#import <YapDatabase/YapDatabaseViewConnection.h>
@import Photos;
NS_ASSUME_NONNULL_BEGIN
// Always load up to 50 messages when user arrives.
static const int kYapDatabasePageSize = 50;
// Never show more than 50*500 = 25k messages in conversation view at a time.
static const int kYapDatabaseMaxPageCount = 500;
// Never show more than 6*50 = 300 messages in conversation view when user
// arrives.
static const int kYapDatabaseMaxInitialPageCount = 6;
static const int kConversationInitialMaxRangeSize = kYapDatabasePageSize * kYapDatabaseMaxInitialPageCount;
static const int kYapDatabaseRangeMaxLength = kYapDatabasePageSize * kYapDatabaseMaxPageCount;
static const int kYapDatabaseRangeMinLength = 0;
static const CGFloat kLoadMoreHeaderHeight = 60.f;
typedef enum : NSUInteger {
kMediaTypePicture,
kMediaTypeVideo,
} kMediaTypes;
#pragma mark -
@interface ConversationViewController () <AttachmentApprovalViewControllerDelegate,
AVAudioPlayerDelegate,
ContactsViewHelperDelegate,
ContactEditingDelegate,
CNContactViewControllerDelegate,
DisappearingTimerConfigurationViewDelegate,
OWSConversationSettingsViewDelegate,
ConversationViewLayoutDelegate,
ConversationViewCellDelegate,
ConversationInputTextViewDelegate,
UICollectionViewDelegate,
UICollectionViewDataSource,
UIDocumentMenuDelegate,
UIDocumentPickerDelegate,
UIImagePickerControllerDelegate,
UINavigationControllerDelegate,
UITextViewDelegate,
ConversationCollectionViewDelegate,
ConversationInputToolbarDelegate,
GifPickerViewControllerDelegate>
// Show message info animation
@property (nullable, nonatomic) UIPercentDrivenInteractiveTransition *showMessageDetailsTransition;
@property (nullable, nonatomic) UIPanGestureRecognizer *currentShowMessageDetailsPanGesture;
@property (nonatomic) TSThread *thread;
@property (nonatomic) YapDatabaseConnection *editingDatabaseConnection;
@property (nonatomic, readonly) AudioActivity *voiceNoteAudioActivity;
// These two properties must be updated in lockstep.
//
// * The first (required) step is to update uiDatabaseConnection using beginLongLivedReadTransaction.
// * The second (required) step is to update messageMappings.
// * The third (optional) step is to update the messageMappings range using
// updateMessageMappingRangeOptions.
// * The fourth (optional) step is to update the view items using reloadViewItems.
// * The steps must be done in strict order.
// * If we do any of the steps, we must do all of the required steps.
// * We can't use messageMappings or viewItems after the first step until we've
// done the last step; i.e.. we can't do any layout, since that uses the view
// items which haven't been updated yet.
// * If the first and/or second steps changes the set of messages
// their ordering and/or their state, we must do the third and fourth steps.
// * If we do the third step, we must call resetContentAndLayout afterward.
@property (nonatomic) YapDatabaseConnection *uiDatabaseConnection;
@property (nonatomic) YapDatabaseViewMappings *messageMappings;
@property (nonatomic, readonly) ConversationInputToolbar *inputToolbar;
@property (nonatomic, readonly) ConversationCollectionView *collectionView;
@property (nonatomic, readonly) ConversationViewLayout *layout;
@property (nonatomic) NSArray<ConversationViewItem *> *viewItems;
@property (nonatomic) NSMutableDictionary<NSString *, ConversationViewItem *> *viewItemCache;
@property (nonatomic, nullable) AVAudioRecorder *audioRecorder;
@property (nonatomic, nullable) OWSAudioPlayer *audioAttachmentPlayer;
@property (nonatomic, nullable) NSUUID *voiceMessageUUID;
@property (nonatomic, nullable) NSTimer *readTimer;
@property (nonatomic) NSCache *cellMediaCache;
@property (nonatomic) ConversationHeaderView *navigationBarTitleView;
@property (nonatomic) UILabel *navigationBarTitleLabel;
@property (nonatomic) UILabel *navigationBarSubtitleLabel;
@property (nonatomic, nullable) UIView *bannerView;
@property (nonatomic, nullable) OWSDisappearingMessagesConfiguration *disappearingMessagesConfiguration;
// Back Button Unread Count
@property (nonatomic, readonly) UIView *backButtonUnreadCountView;
@property (nonatomic, readonly) UILabel *backButtonUnreadCountLabel;
@property (nonatomic, readonly) NSUInteger backButtonUnreadCount;
@property (nonatomic) NSUInteger lastRangeLength;
@property (nonatomic) BOOL composeOnOpen;
@property (nonatomic) BOOL callOnOpen;
@property (nonatomic) BOOL peek;
@property (nonatomic, readonly) OWSContactsManager *contactsManager;
@property (nonatomic, readonly) ContactsUpdater *contactsUpdater;
@property (nonatomic, readonly) OWSMessageSender *messageSender;
@property (nonatomic, readonly) OWSPrimaryStorage *primaryStorage;
@property (nonatomic, readonly) TSNetworkManager *networkManager;
@property (nonatomic, readonly) OutboundCallInitiator *outboundCallInitiator;
@property (nonatomic, readonly) OWSBlockingManager *blockingManager;
@property (nonatomic, readonly) ContactsViewHelper *contactsViewHelper;
@property (nonatomic) BOOL userHasScrolled;
@property (nonatomic, nullable) NSDate *lastMessageSentDate;
@property (nonatomic, nullable) ThreadDynamicInteractions *dynamicInteractions;
@property (nonatomic) BOOL hasClearedUnreadMessagesIndicator;
@property (nonatomic) BOOL showLoadMoreHeader;
@property (nonatomic) UILabel *loadMoreHeader;
@property (nonatomic) uint64_t lastVisibleTimestamp;
@property (nonatomic, readonly) BOOL isGroupConversation;
@property (nonatomic) BOOL isUserScrolling;
@property (nonatomic) NSLayoutConstraint *scrollDownButtonButtomConstraint;
@property (nonatomic) ConversationScrollButton *scrollDownButton;
#ifdef DEBUG
@property (nonatomic) ConversationScrollButton *scrollUpButton;
#endif
@property (nonatomic) BOOL isViewCompletelyAppeared;
@property (nonatomic) BOOL isViewVisible;
@property (nonatomic) BOOL isAppInBackground;
@property (nonatomic) BOOL shouldObserveDBModifications;
@property (nonatomic) BOOL viewHasEverAppeared;
@property (nonatomic) BOOL hasUnreadMessages;
@property (nonatomic) BOOL isPickingMediaAsDocument;
@property (nonatomic, nullable) NSNumber *previousLastTimestamp;
@property (nonatomic, nullable) NSNumber *viewHorizonTimestamp;
@end
#pragma mark -
@implementation ConversationViewController
- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder
{
OWSFail(@"Do not instantiate this view from coder");
self = [super initWithCoder:aDecoder];
if (!self) {
return self;
}
[self commonInit];
return self;
}
- (instancetype)initWithNibName:(nullable NSString *)nibNameOrNil bundle:(nullable NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (!self) {
return self;
}
[self commonInit];
return self;
}
- (void)commonInit
{
_contactsManager = [Environment current].contactsManager;
_contactsUpdater = [Environment current].contactsUpdater;
_messageSender = [Environment current].messageSender;
_outboundCallInitiator = SignalApp.sharedApp.outboundCallInitiator;
_primaryStorage = [OWSPrimaryStorage sharedManager];
_networkManager = [TSNetworkManager sharedManager];
_blockingManager = [OWSBlockingManager sharedManager];
_contactsViewHelper = [[ContactsViewHelper alloc] initWithDelegate:self];
NSString *audioActivityDescription = [NSString stringWithFormat:@"%@ voice note", self.logTag];
_voiceNoteAudioActivity = [[AudioActivity alloc] initWithAudioDescription:audioActivityDescription];
}
- (void)addNotificationListeners
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(blockedPhoneNumbersDidChange:)
name:kNSNotificationName_BlockedPhoneNumbersDidChange
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(identityStateDidChange:)
name:kNSNotificationName_IdentityStateDidChange
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(didChangePreferredContentSize:)
name:UIContentSizeCategoryDidChangeNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(yapDatabaseModified:)
name:YapDatabaseModifiedNotification
object:OWSPrimaryStorage.sharedManager.dbNotificationObject];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(yapDatabaseModifiedExternally:)
name:YapDatabaseModifiedExternallyNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(applicationWillEnterForeground:)
name:OWSApplicationWillEnterForegroundNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(applicationDidEnterBackground:)
name:OWSApplicationDidEnterBackgroundNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(applicationWillResignActive:)
name:OWSApplicationWillResignActiveNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(cancelReadTimer)
name:OWSApplicationDidEnterBackgroundNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(otherUsersProfileDidChange:)
name:kNSNotificationName_OtherUsersProfileDidChange
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(profileWhitelistDidChange:)
name:kNSNotificationName_ProfileWhitelistDidChange
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(signalAccountsDidChange:)
name:OWSContactsManagerSignalAccountsDidChangeNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillChangeFrame:)
name:UIKeyboardWillChangeFrameNotification
object:nil];
}
- (void)signalAccountsDidChange:(NSNotification *)notification
{
OWSAssertIsOnMainThread();
[self ensureDynamicInteractions];
}
- (void)otherUsersProfileDidChange:(NSNotification *)notification
{
OWSAssertIsOnMainThread();
NSString *recipientId = notification.userInfo[kNSNotificationKey_ProfileRecipientId];
OWSAssert(recipientId.length > 0);
if (recipientId.length > 0 && [self.thread.recipientIdentifiers containsObject:recipientId]) {
if ([self.thread isKindOfClass:[TSContactThread class]]) {
// update title with profile name
[self setNavigationTitle];
}
if (self.isGroupConversation) {
// Reload all cells if this is a group conversation,
// since we may need to update the sender names on the messages.
[self resetContentAndLayout];
}
}
}
- (void)profileWhitelistDidChange:(NSNotification *)notification
{
OWSAssertIsOnMainThread();
// If profile whitelist just changed, we may want to hide a profile whitelist offer.
NSString *_Nullable recipientId = notification.userInfo[kNSNotificationKey_ProfileRecipientId];
NSData *_Nullable groupId = notification.userInfo[kNSNotificationKey_ProfileGroupId];
if (recipientId.length > 0 && [self.thread.recipientIdentifiers containsObject:recipientId]) {
[self ensureDynamicInteractions];
} else if (groupId.length > 0 && self.thread.isGroupThread) {
TSGroupThread *groupThread = (TSGroupThread *)self.thread;
if ([groupThread.groupModel.groupId isEqualToData:groupId]) {
[self ensureDynamicInteractions];
[self ensureBannerState];
}
}
}
- (void)blockedPhoneNumbersDidChange:(id)notification
{
OWSAssertIsOnMainThread();
[self ensureBannerState];
}
- (void)identityStateDidChange:(NSNotification *)notification
{
OWSAssertIsOnMainThread();
[self updateNavigationBarSubtitleLabel];
[self ensureBannerState];
}
- (void)peekSetup
{
_peek = YES;
[self setComposeOnOpen:NO];
}
- (void)popped
{
_peek = NO;
[self hideInputIfNeeded];
}
- (void)configureForThread:(TSThread *)thread
keyboardOnViewAppearing:(BOOL)keyboardOnViewAppearing
callOnViewAppearing:(BOOL)callOnViewAppearing
{
// At most one.
OWSAssert(!keyboardOnViewAppearing || !callOnViewAppearing);
if (callOnViewAppearing) {
keyboardOnViewAppearing = NO;
}
_thread = thread;
_isGroupConversation = [self.thread isKindOfClass:[TSGroupThread class]];
_composeOnOpen = keyboardOnViewAppearing;
_callOnOpen = callOnViewAppearing;
_cellMediaCache = [NSCache new];
// Cache the cell media for ~24 cells.
self.cellMediaCache.countLimit = 24;
[self.uiDatabaseConnection beginLongLivedReadTransaction];
// We need to update the "unread indicator" _before_ we determine the initial range
// size, since it depends on where the unread indicator is placed.
self.lastRangeLength = 0;
[self ensureDynamicInteractions];
if (thread.uniqueId.length > 0) {
self.messageMappings = [[YapDatabaseViewMappings alloc] initWithGroups:@[ thread.uniqueId ]
view:TSMessageDatabaseViewExtensionName];
} else {
OWSFail(@"uniqueId unexpectedly empty for thread: %@", thread);
self.messageMappings =
[[YapDatabaseViewMappings alloc] initWithGroups:@[] view:TSMessageDatabaseViewExtensionName];
return;
}
// 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.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
[self.messageMappings updateWithTransaction:transaction];
}];
[self updateMessageMappingRangeOptions];
[self updateShouldObserveDBModifications];
}
- (BOOL)userLeftGroup
{
if (![_thread isKindOfClass:[TSGroupThread class]]) {
return NO;
}
TSGroupThread *groupThread = (TSGroupThread *)self.thread;
return ![groupThread.groupModel.groupMemberIds containsObject:[TSAccountManager localNumber]];
}
- (void)hideInputIfNeeded
{
if (_peek) {
self.inputToolbar.hidden = YES;
[self dismissKeyBoard];
return;
}
if (self.userLeftGroup) {
self.inputToolbar.hidden = YES; // user has requested they leave the group. further sends disallowed
[self dismissKeyBoard];
} else {
self.inputToolbar.hidden = NO;
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self createContents];
[self.navigationController.navigationBar setTranslucent:NO];
[self registerCellClasses];
[self createConversationScrollButtons];
[self createHeaderViews];
[self createBackButton];
[self addNotificationListeners];
[self loadDraftInCompose];
}
- (void)loadView
{
[super loadView];
self.view.backgroundColor = [UIColor ows_toolbarBackgroundColor];
}
- (void)createContents
{
_layout = [ConversationViewLayout new];
self.layout.delegate = self;
// We use the root view bounds as the initial frame for the collection
// view so that its contents can be laid out immediately.
_collectionView =
[[ConversationCollectionView alloc] initWithFrame:self.view.bounds collectionViewLayout:self.layout];
self.collectionView.layoutDelegate = self;
self.collectionView.delegate = self;
self.collectionView.dataSource = self;
self.collectionView.showsVerticalScrollIndicator = YES;
self.collectionView.showsHorizontalScrollIndicator = NO;
self.collectionView.keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;
self.collectionView.backgroundColor = [UIColor whiteColor];
[self.view addSubview:self.collectionView];
[self.collectionView autoPinWidthToSuperview];
[self.collectionView autoPinToTopLayoutGuideOfViewController:self withInset:0];
// Fix a bug that only affects iOS 11.0.x and 11.1.x.
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(11, 0) && !SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(11, 2)) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wpartial-availability"
self.collectionView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
#pragma clang diagnostic pop
}
_inputToolbar = [ConversationInputToolbar new];
self.inputToolbar.inputToolbarDelegate = self;
self.inputToolbar.inputTextViewDelegate = self;
[self.collectionView autoPinToBottomLayoutGuideOfViewController:self withInset:0];
self.loadMoreHeader = [UILabel new];
self.loadMoreHeader.text = NSLocalizedString(@"CONVERSATION_VIEW_LOADING_MORE_MESSAGES",
@"Indicates that the app is loading more messages in this conversation.");
self.loadMoreHeader.textColor = [UIColor ows_materialBlueColor];
self.loadMoreHeader.textAlignment = NSTextAlignmentCenter;
self.loadMoreHeader.font = [UIFont ows_mediumFontWithSize:16.f];
[self.collectionView addSubview:self.loadMoreHeader];
[self.loadMoreHeader autoPinWidthToWidthOfView:self.view];
[self.loadMoreHeader autoPinEdgeToSuperviewEdge:ALEdgeTop];
[self.loadMoreHeader autoSetDimension:ALDimensionHeight toSize:kLoadMoreHeaderHeight];
}
- (BOOL)becomeFirstResponder
{
DDLogDebug(@"%@ in %s", self.logTag, __PRETTY_FUNCTION__);
return [super becomeFirstResponder];
}
- (BOOL)resignFirstResponder
{
DDLogDebug(@"%@ in %s", self.logTag, __PRETTY_FUNCTION__);
return [super resignFirstResponder];
}
- (BOOL)canBecomeFirstResponder
{
return YES;
}
- (nullable UIView *)inputAccessoryView
{
return self.inputToolbar;
}
- (void)registerCellClasses
{
[self.collectionView registerClass:[OWSSystemMessageCell class]
forCellWithReuseIdentifier:[OWSSystemMessageCell cellReuseIdentifier]];
[self.collectionView registerClass:[OWSUnreadIndicatorCell class]
forCellWithReuseIdentifier:[OWSUnreadIndicatorCell cellReuseIdentifier]];
[self.collectionView registerClass:[OWSContactOffersCell class]
forCellWithReuseIdentifier:[OWSContactOffersCell cellReuseIdentifier]];
[self.collectionView registerClass:[OWSMessageCell class]
forCellWithReuseIdentifier:[OWSMessageCell cellReuseIdentifier]];
}
- (void)applicationWillEnterForeground:(NSNotification *)notification
{
[self startReadTimer];
self.isAppInBackground = NO;
}
- (void)applicationDidEnterBackground:(NSNotification *)notification
{
self.isAppInBackground = YES;
if (self.hasClearedUnreadMessagesIndicator) {
self.hasClearedUnreadMessagesIndicator = NO;
[self.dynamicInteractions clearUnreadIndicatorState];
}
[self.cellMediaCache removeAllObjects];
}
- (void)applicationWillResignActive:(NSNotification *)notification
{
[self cancelVoiceMemo];
self.isUserScrolling = NO;
[self saveDraft];
[self markVisibleMessagesAsRead];
[self.cellMediaCache removeAllObjects];
[self cancelReadTimer];
}
- (void)viewWillAppear:(BOOL)animated
{
DDLogDebug(@"%@ viewWillAppear", self.logTag);
[self ensureBannerState];
[super viewWillAppear:animated];
// In case we're dismissing a CNContactViewController, or DocumentPicker which requires default system appearance
[UIUtil applySignalAppearence];
// We need to recheck on every appearance, since the user may have left the group in the settings VC,
// or on another device.
[self hideInputIfNeeded];
self.isViewVisible = YES;
// We should have already requested contact access at this point, so this should be a no-op
// unless it ever becomes possible to load this VC without going via the HomeViewController.
[self.contactsManager requestSystemContactsOnce];
[self updateDisappearingMessagesConfiguration];
[self updateBarButtonItems];
[self setNavigationTitle];
// We want to set the initial scroll state the first time we enter the view.
if (!self.viewHasEverAppeared) {
[self scrollToDefaultPosition];
}
[self updateLastVisibleTimestamp];
}
- (NSIndexPath *_Nullable)indexPathOfUnreadMessagesIndicator
{
NSInteger row = 0;
for (ConversationViewItem *viewItem in self.viewItems) {
OWSInteractionType interactionType
= (viewItem ? viewItem.interaction.interactionType : OWSInteractionType_Unknown);
if (interactionType == OWSInteractionType_UnreadIndicator) {
return [NSIndexPath indexPathForRow:row inSection:0];
}
row++;
}
return nil;
}
- (void)scrollToDefaultPosition
{
if (self.isUserScrolling) {
return;
}
NSIndexPath *_Nullable indexPath = [self indexPathOfUnreadMessagesIndicator];
if (indexPath) {
if (indexPath.section == 0 && indexPath.row == 0) {
[self.collectionView setContentOffset:CGPointZero animated:NO];
} else {
[self.collectionView scrollToItemAtIndexPath:indexPath
atScrollPosition:UICollectionViewScrollPositionTop
animated:NO];
}
} else {
[self scrollToBottomAnimated:NO];
}
}
- (void)scrollToUnreadIndicatorAnimated
{
if (self.isUserScrolling) {
return;
}
NSIndexPath *_Nullable indexPath = [self indexPathOfUnreadMessagesIndicator];
if (indexPath) {
if (indexPath.section == 0 && indexPath.row == 0) {
[self.collectionView setContentOffset:CGPointZero animated:YES];
} else {
[self.collectionView scrollToItemAtIndexPath:indexPath
atScrollPosition:UICollectionViewScrollPositionTop
animated:YES];
}
}
}
- (void)resetContentAndLayout
{
// Avoid layout corrupt issues and out-of-date message subtitles.
[self.collectionView.collectionViewLayout invalidateLayout];
[self.collectionView reloadData];
}
- (void)setUserHasScrolled:(BOOL)userHasScrolled
{
_userHasScrolled = userHasScrolled;
[self ensureBannerState];
}
// Returns a collection of the group members who are "no longer verified".
- (NSArray<NSString *> *)noLongerVerifiedRecipientIds
{
NSMutableArray<NSString *> *result = [NSMutableArray new];
for (NSString *recipientId in self.thread.recipientIdentifiers) {
if ([[OWSIdentityManager sharedManager] verificationStateForRecipientId:recipientId]
== OWSVerificationStateNoLongerVerified) {
[result addObject:recipientId];
}
}
return [result copy];
}
- (void)ensureBannerState
{
// This method should be called rarely, so it's simplest to discard and
// rebuild the indicator view every time.
[self.bannerView removeFromSuperview];
self.bannerView = nil;
if (self.userHasScrolled) {
return;
}
NSArray<NSString *> *noLongerVerifiedRecipientIds = [self noLongerVerifiedRecipientIds];
if (noLongerVerifiedRecipientIds.count > 0) {
NSString *message;
if (noLongerVerifiedRecipientIds.count > 1) {
message = NSLocalizedString(@"MESSAGES_VIEW_N_MEMBERS_NO_LONGER_VERIFIED",
@"Indicates that more than one member of this group conversation is no longer verified.");
} else {
NSString *recipientId = [noLongerVerifiedRecipientIds firstObject];
NSString *displayName = [self.contactsManager displayNameForPhoneIdentifier:recipientId];
NSString *format
= (self.isGroupConversation ? NSLocalizedString(@"MESSAGES_VIEW_1_MEMBER_NO_LONGER_VERIFIED_FORMAT",
@"Indicates that one member of this group conversation is no longer "
@"verified. Embeds {{user's name or phone number}}.")
: NSLocalizedString(@"MESSAGES_VIEW_CONTACT_NO_LONGER_VERIFIED_FORMAT",
@"Indicates that this 1:1 conversation is no longer verified. Embeds "
@"{{user's name or phone number}}."));
message = [NSString stringWithFormat:format, displayName];
}
[self createBannerWithTitle:message
bannerColor:[UIColor ows_destructiveRedColor]
tapSelector:@selector(noLongerVerifiedBannerViewWasTapped:)];
return;
}
NSString *blockStateMessage = nil;
if ([self isBlockedContactConversation]) {
blockStateMessage = NSLocalizedString(
@"MESSAGES_VIEW_CONTACT_BLOCKED", @"Indicates that this 1:1 conversation has been blocked.");
} else if (self.isGroupConversation) {
int blockedGroupMemberCount = [self blockedGroupMemberCount];
if (blockedGroupMemberCount == 1) {
blockStateMessage = NSLocalizedString(@"MESSAGES_VIEW_GROUP_1_MEMBER_BLOCKED",
@"Indicates that a single member of this group has been blocked.");
} else if (blockedGroupMemberCount > 1) {
blockStateMessage =
[NSString stringWithFormat:NSLocalizedString(@"MESSAGES_VIEW_GROUP_N_MEMBERS_BLOCKED_FORMAT",
@"Indicates that some members of this group has been blocked. Embeds "
@"{{the number of blocked users in this group}}."),
[OWSFormat formatInt:blockedGroupMemberCount]];
}
}
if (blockStateMessage) {
[self createBannerWithTitle:blockStateMessage
bannerColor:[UIColor ows_destructiveRedColor]
tapSelector:@selector(blockBannerViewWasTapped:)];
return;
}
if ([ThreadUtil shouldShowGroupProfileBannerInThread:self.thread blockingManager:self.blockingManager]) {
[self createBannerWithTitle:
NSLocalizedString(@"MESSAGES_VIEW_GROUP_PROFILE_WHITELIST_BANNER",
@"Text for banner in group conversation view that offers to share your profile with this group.")
bannerColor:[UIColor ows_reminderDarkYellowColor]
tapSelector:@selector(groupProfileWhitelistBannerWasTapped:)];
return;
}
}
- (void)createBannerWithTitle:(NSString *)title bannerColor:(UIColor *)bannerColor tapSelector:(SEL)tapSelector
{
OWSAssert(title.length > 0);
OWSAssert(bannerColor);
UIView *bannerView = [UIView containerView];
bannerView.backgroundColor = bannerColor;
bannerView.layer.cornerRadius = 2.5f;
// Use a shadow to "pop" the indicator above the other views.
bannerView.layer.shadowColor = [UIColor blackColor].CGColor;
bannerView.layer.shadowOffset = CGSizeMake(2, 3);
bannerView.layer.shadowRadius = 2.f;
bannerView.layer.shadowOpacity = 0.35f;
UILabel *label = [UILabel new];
label.font = [UIFont ows_mediumFontWithSize:14.f];
label.text = title;
label.textColor = [UIColor whiteColor];
label.numberOfLines = 0;
label.lineBreakMode = NSLineBreakByWordWrapping;
label.textAlignment = NSTextAlignmentCenter;
UIImage *closeIcon = [UIImage imageNamed:@"banner_close"];
UIImageView *closeButton = [[UIImageView alloc] initWithImage:closeIcon];
[bannerView addSubview:closeButton];
const CGFloat kBannerCloseButtonPadding = 8.f;
[closeButton autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:kBannerCloseButtonPadding];
[closeButton autoPinTrailingToSuperviewMarginWithInset:kBannerCloseButtonPadding];
[closeButton autoSetDimension:ALDimensionWidth toSize:closeIcon.size.width];
[closeButton autoSetDimension:ALDimensionHeight toSize:closeIcon.size.height];
[bannerView addSubview:label];
[label autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:5];
[label autoPinEdgeToSuperviewEdge:ALEdgeBottom withInset:5];
const CGFloat kBannerHPadding = 15.f;
[label autoPinLeadingToSuperviewMarginWithInset:kBannerHPadding];
const CGFloat kBannerHSpacing = 10.f;
[closeButton autoPinLeadingToTrailingEdgeOfView:label offset:kBannerHSpacing];
[bannerView addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:tapSelector]];
[self.view addSubview:bannerView];
[bannerView autoPinToTopLayoutGuideOfViewController:self withInset:10];
[bannerView autoHCenterInSuperview];
CGFloat labelDesiredWidth = [label sizeThatFits:CGSizeZero].width;
CGFloat bannerDesiredWidth
= (labelDesiredWidth + kBannerHPadding + kBannerHSpacing + closeIcon.size.width + kBannerCloseButtonPadding);
const CGFloat kMinBannerHMargin = 20.f;
if (bannerDesiredWidth + kMinBannerHMargin * 2.f >= self.view.width) {
[bannerView autoPinWidthToSuperviewWithMargin:kMinBannerHMargin];
}
[self.view layoutSubviews];
self.bannerView = bannerView;
}
- (void)blockBannerViewWasTapped:(UIGestureRecognizer *)sender
{
if (sender.state != UIGestureRecognizerStateRecognized) {
return;
}
if ([self isBlockedContactConversation]) {
// If this a blocked 1:1 conversation, offer to unblock the user.
[self showUnblockContactUI:nil];
} else if (self.isGroupConversation) {
// If this a group conversation with at least one blocked member,
// Show the block list view.
int blockedGroupMemberCount = [self blockedGroupMemberCount];
if (blockedGroupMemberCount > 0) {
BlockListViewController *vc = [[BlockListViewController alloc] init];
[self.navigationController pushViewController:vc animated:YES];
}
}
}
- (void)groupProfileWhitelistBannerWasTapped:(UIGestureRecognizer *)sender
{
if (sender.state != UIGestureRecognizerStateRecognized) {
return;
}
[self presentAddThreadToProfileWhitelistWithSuccess:^{
[self ensureBannerState];
}];
}
- (void)noLongerVerifiedBannerViewWasTapped:(UIGestureRecognizer *)sender
{
if (sender.state == UIGestureRecognizerStateRecognized) {
NSArray<NSString *> *noLongerVerifiedRecipientIds = [self noLongerVerifiedRecipientIds];
if (noLongerVerifiedRecipientIds.count < 1) {
return;
}
BOOL hasMultiple = noLongerVerifiedRecipientIds.count > 1;
UIAlertController *actionSheetController =
[UIAlertController alertControllerWithTitle:nil
message:nil
preferredStyle:UIAlertControllerStyleActionSheet];
__weak ConversationViewController *weakSelf = self;
UIAlertAction *verifyAction = [UIAlertAction
actionWithTitle:(hasMultiple ? NSLocalizedString(@"VERIFY_PRIVACY_MULTIPLE",
@"Label for button or row which allows users to verify the safety "
@"numbers of multiple users.")
: NSLocalizedString(@"VERIFY_PRIVACY",
@"Label for button or row which allows users to verify the safety "
@"number of another user."))style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
[weakSelf showNoLongerVerifiedUI];
}];
[actionSheetController addAction:verifyAction];
UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:CommonStrings.dismissButton
style:UIAlertActionStyleCancel
handler:^(UIAlertAction *_Nonnull action) {
[weakSelf resetVerificationStateToDefault];
}];
[actionSheetController addAction:dismissAction];
[self dismissKeyBoard];
[self presentViewController:actionSheetController animated:YES completion:nil];
}
}
- (void)resetVerificationStateToDefault
{
OWSAssertIsOnMainThread();
NSArray<NSString *> *noLongerVerifiedRecipientIds = [self noLongerVerifiedRecipientIds];
for (NSString *recipientId in noLongerVerifiedRecipientIds) {
OWSAssert(recipientId.length > 0);
OWSRecipientIdentity *_Nullable recipientIdentity =
[[OWSIdentityManager sharedManager] recipientIdentityForRecipientId:recipientId];
OWSAssert(recipientIdentity);
NSData *identityKey = recipientIdentity.identityKey;
OWSAssert(identityKey.length > 0);
if (identityKey.length < 1) {
continue;
}
[OWSIdentityManager.sharedManager setVerificationState:OWSVerificationStateDefault
identityKey:identityKey
recipientId:recipientId
isUserInitiatedChange:YES];
}
}
- (void)showUnblockContactUI:(nullable BlockActionCompletionBlock)completionBlock
{
OWSAssert([self.thread isKindOfClass:[TSContactThread class]]);
self.userHasScrolled = NO;
// To avoid "noisy" animations (hiding the keyboard before showing
// the action sheet, re-showing it after), hide the keyboard before
// showing the "unblock" action sheet.
//
// Unblocking is a rare interaction, so it's okay to leave the keyboard
// hidden.
[self dismissKeyBoard];
NSString *contactIdentifier = ((TSContactThread *)self.thread).contactIdentifier;
[BlockListUIUtils showUnblockPhoneNumberActionSheet:contactIdentifier
fromViewController:self
blockingManager:_blockingManager
contactsManager:_contactsManager
completionBlock:completionBlock];
}
- (BOOL)isBlockedContactConversation
{
if (![self.thread isKindOfClass:[TSContactThread class]]) {
return NO;
}
NSString *contactIdentifier = ((TSContactThread *)self.thread).contactIdentifier;
return [[_blockingManager blockedPhoneNumbers] containsObject:contactIdentifier];
}
- (int)blockedGroupMemberCount
{
OWSAssert(self.isGroupConversation);
OWSAssert([self.thread isKindOfClass:[TSGroupThread class]]);
TSGroupThread *groupThread = (TSGroupThread *)self.thread;
int blockedMemberCount = 0;
NSArray<NSString *> *blockedPhoneNumbers = [_blockingManager blockedPhoneNumbers];
for (NSString *contactIdentifier in groupThread.groupModel.groupMemberIds) {
if ([blockedPhoneNumbers containsObject:contactIdentifier]) {
blockedMemberCount++;
}
}
return blockedMemberCount;
}
- (void)startReadTimer
{
[self.readTimer invalidate];
self.readTimer = [NSTimer weakScheduledTimerWithTimeInterval:3.f
target:self
selector:@selector(readTimerDidFire)
userInfo:nil
repeats:YES];
}
- (void)readTimerDidFire
{
[self markVisibleMessagesAsRead];
}
- (void)cancelReadTimer
{
[self.readTimer invalidate];
self.readTimer = nil;
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
[ProfileFetcherJob runWithThread:self.thread networkManager:self.networkManager];
[self markVisibleMessagesAsRead];
[self startReadTimer];
[self updateNavigationBarSubtitleLabel];
[self updateBackButtonUnreadCount];
if (_composeOnOpen && !self.inputToolbar.hidden) {
[self popKeyBoard];
_composeOnOpen = NO;
}
if (_callOnOpen) {
[self callAction];
_callOnOpen = NO;
}
self.isViewCompletelyAppeared = YES;
self.viewHasEverAppeared = YES;
// HACK: Because the inputToolbar is the inputAccessoryView, we make some special considertations WRT it's firstResponder status.
//
// When a view controller is presented, it is first responder. However if we resign first responder
// and the view re-appears, without being presented, the inputToolbar can become invisible.
// e.g. specifically works around the scenario:
// - Present this VC
// - Longpress on a message to show edit menu, which entails making the pressed view the first responder.
// - Begin presenting another view, e.g. swipe-left for details or swipe-right to go back, but quit part way, so that you remain on the conversation view
// - toolbar will be not be visible unless we reaquire first responder.
if (!self.isFirstResponder) {
// We don't have to worry about the input toolbar being visible if the inputToolbar.textView is first responder
// In fact doing so would unnecessarily dismiss the keyboard which is probably not desirable and at least
// a distracting animation.
if (!self.inputToolbar.isInputTextViewFirstResponder) {
DDLogDebug(@"%@ reclaiming first responder to ensure toolbar is shown.", self.logTag);
[self becomeFirstResponder];
}
}
}
// `viewWillDisappear` is called whenever the view *starts* to disappear,
// but, as is the case with the "pan left for message details view" gesture,
// this can be canceled. As such, we shouldn't tear down anything expensive
// until `viewDidDisappear`.
- (void)viewWillDisappear:(BOOL)animated
{
DDLogDebug(@"%@ viewWillDisappear", self.logTag);
[super viewWillDisappear:animated];
self.isViewCompletelyAppeared = NO;
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
self.userHasScrolled = NO;
self.isViewVisible = NO;
[self.audioAttachmentPlayer stop];
self.audioAttachmentPlayer = nil;
[self cancelReadTimer];
[self saveDraft];
[self markVisibleMessagesAsRead];
[self cancelVoiceMemo];
[self.cellMediaCache removeAllObjects];
self.isUserScrolling = NO;
}
#pragma mark - Initiliazers
- (void)setNavigationTitle
{
NSAttributedString *name;
if (self.thread.isGroupThread) {
if (self.thread.name.length == 0) {
name = [[NSAttributedString alloc] initWithString:[MessageStrings newGroupDefaultTitle]];
} else {
name = [[NSAttributedString alloc] initWithString:self.thread.name];
}
} else {
OWSAssert(self.thread.contactIdentifier);
name = [self.contactsManager
attributedStringForConversationTitleWithPhoneIdentifier:self.thread.contactIdentifier
primaryFont:[self navigationBarTitleLabelFont]
secondaryFont:[UIFont ows_footnoteFont]];
}
self.title = nil;
if ([name isEqual:self.navigationBarTitleLabel.attributedText]) {
return;
}
self.navigationBarTitleLabel.attributedText = name;
// Changing the title requires relayout of the nav bar contents.
[self updateBarButtonItems];
}
- (void)createHeaderViews
{
_backButtonUnreadCountView = [UIView new];
_backButtonUnreadCountView.layer.cornerRadius = self.unreadCountViewDiameter / 2;
_backButtonUnreadCountView.backgroundColor = [UIColor redColor];
_backButtonUnreadCountView.hidden = YES;
_backButtonUnreadCountView.userInteractionEnabled = NO;
_backButtonUnreadCountLabel = [UILabel new];
_backButtonUnreadCountLabel.backgroundColor = [UIColor clearColor];
_backButtonUnreadCountLabel.textColor = [UIColor whiteColor];
_backButtonUnreadCountLabel.font = [UIFont systemFontOfSize:11];
_backButtonUnreadCountLabel.textAlignment = NSTextAlignmentCenter;
self.navigationBarTitleView = [ConversationHeaderView new];
self.navigationBarTitleView.userInteractionEnabled = YES;
[self.navigationBarTitleView
addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self
action:@selector(navigationTitleTapped:)]];
#ifdef USE_DEBUG_UI
[self.navigationBarTitleView addGestureRecognizer:[[UILongPressGestureRecognizer alloc]
initWithTarget:self
action:@selector(navigationTitleLongPressed:)]];
#endif
self.navigationBarTitleLabel = [UILabel new];
self.navigationBarTitleView.titleLabel = self.navigationBarTitleLabel;
self.navigationBarTitleLabel.textColor = [UIColor whiteColor];
self.navigationBarTitleLabel.font = [self navigationBarTitleLabelFont];
self.navigationBarTitleLabel.lineBreakMode = NSLineBreakByTruncatingTail;
[self.navigationBarTitleView addSubview:self.navigationBarTitleLabel];
self.navigationBarSubtitleLabel = [UILabel new];
self.navigationBarTitleView.subtitleLabel = self.navigationBarSubtitleLabel;
[self updateNavigationBarSubtitleLabel];
[self.navigationBarTitleView addSubview:self.navigationBarSubtitleLabel];
}
- (UIFont *)navigationBarTitleLabelFont
{
return [UIFont ows_boldFontWithSize:20.f];
}
- (CGFloat)unreadCountViewDiameter
{
return 16;
}
- (void)createBackButton
{
UIBarButtonItem *backItem = [self createOWSBackButton];
if (backItem.customView) {
// This method gets called multiple times, so it's important we re-layout the unread badge
// with respect to the new backItem.
[backItem.customView addSubview:_backButtonUnreadCountView];
// TODO: The back button assets are assymetrical. There are strong reasons
// to use spacing in the assets to manipulate the size and positioning of
// bar button items, but it means we'll probably need separate RTL and LTR
// flavors of these assets.
[_backButtonUnreadCountView autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:-6];
[_backButtonUnreadCountView autoPinLeadingToSuperviewMarginWithInset:1];
[_backButtonUnreadCountView autoSetDimension:ALDimensionHeight toSize:self.unreadCountViewDiameter];
// We set a min width, but we will also pin to our subview label, so we can grow to accommodate multiple digits.
[_backButtonUnreadCountView autoSetDimension:ALDimensionWidth
toSize:self.unreadCountViewDiameter
relation:NSLayoutRelationGreaterThanOrEqual];
[_backButtonUnreadCountView addSubview:_backButtonUnreadCountLabel];
[_backButtonUnreadCountLabel autoPinWidthToSuperviewWithMargin:4];
[_backButtonUnreadCountLabel autoPinHeightToSuperview];
// Initialize newly created unread count badge to accurately reflect the current unread count.
[self updateBackButtonUnreadCount];
}
self.navigationItem.leftBarButtonItem = backItem;
}
- (void)updateBarButtonItems
{
// We want to leave space for the "back" button, the "timer" button, and the "call"
// button, and all of the whitespace around these views. There
// isn't a convenient way to calculate these in a navigation bar, so we just leave
// a constant amount of space which will be safe unless Apple makes radical changes
// to the appearance of the navigation bar.
int rightBarButtonItemCount = 0;
if ([self canCall]) {
rightBarButtonItemCount++;
}
if (self.disappearingMessagesConfiguration.isEnabled) {
rightBarButtonItemCount++;
}
CGFloat barButtonSize = 0;
switch (rightBarButtonItemCount) {
case 0:
barButtonSize = 70;
break;
case 1:
barButtonSize = 105;
break;
default:
OWSFail(@"%@ Unexpected number of right navbar items.", self.logTag);
// In production, fall through to the largest defined case.
case 2:
barButtonSize = 150;
break;
}
CGSize screenSize = [UIScreen mainScreen].bounds.size;
CGFloat screenWidth = MIN(screenSize.width, screenSize.height);
if (self.navigationItem.titleView != self.navigationBarTitleView) {
// Request "full width" title; the navigation bar will truncate this
// to fit between the left and right buttons.
self.navigationBarTitleView.frame = CGRectMake(0, 0, screenWidth, 44);
self.navigationItem.titleView = self.navigationBarTitleView;
} else {
// Don't reset the frame of the navigationBarTitleView every time
// this method is called or we'll gave bad frames where it will appear
// in the wrong position.
[self.navigationBarTitleView layoutSubviews];
}
if (self.userLeftGroup) {
self.navigationItem.rightBarButtonItems = @[];
return;
}
const CGFloat kBarButtonSize = 44;
NSMutableArray<UIBarButtonItem *> *barButtons = [NSMutableArray new];
if ([self canCall]) {
// We use UIButtons with [UIBarButtonItem initWithCustomView:...] instead of
// UIBarButtonItem in order to ensure that these buttons are spaced tightly.
// The contents of the navigation bar are cramped in this view.
UIButton *callButton = [UIButton buttonWithType:UIButtonTypeCustom];
UIImage *image = [UIImage imageNamed:@"button_phone_white"];
[callButton setImage:image forState:UIControlStateNormal];
UIEdgeInsets imageEdgeInsets = UIEdgeInsetsZero;
// We normally would want to use left and right insets that ensure the button
// is square and the icon is centered. However UINavigationBar doesn't offer us
// control over the margins and spacing of its content, and the buttons end up
// too far apart and too far from the edge of the screen. So we use a smaller
// right inset tighten up the layout.
imageEdgeInsets.left = round((kBarButtonSize - image.size.width) * 0.5f);
imageEdgeInsets.right = round((kBarButtonSize - (image.size.width + imageEdgeInsets.left)) * 0.5f);
imageEdgeInsets.top = round((kBarButtonSize - image.size.height) * 0.5f);
imageEdgeInsets.bottom = round(kBarButtonSize - (image.size.height + imageEdgeInsets.top));
callButton.imageEdgeInsets = imageEdgeInsets;
callButton.accessibilityLabel = NSLocalizedString(@"CALL_LABEL", "Accessibility label for placing call button");
[callButton addTarget:self action:@selector(callAction) forControlEvents:UIControlEventTouchUpInside];
callButton.frame = CGRectMake(0,
0,
round(image.size.width + imageEdgeInsets.left + imageEdgeInsets.right),
round(image.size.height + imageEdgeInsets.top + imageEdgeInsets.bottom));
[barButtons addObject:[[UIBarButtonItem alloc] initWithCustomView:callButton]];
}
if (self.disappearingMessagesConfiguration.isEnabled) {
DisappearingTimerConfigurationView *timerView = [[DisappearingTimerConfigurationView alloc]
initWithDurationSeconds:self.disappearingMessagesConfiguration.durationSeconds];
timerView.delegate = self;
timerView.tintColor = UIColor.whiteColor;
// As of iOS11, we can size barButton item custom views with autoLayout.
// Before that, though we can still use autoLayout *within* the customView,
// setting the view's size with constraints causes the customView to be temporarily
// laid out with a misplaced origin.
if (@available(iOS 11.0, *)) {
[timerView autoSetDimensionsToSize:CGSizeMake(36, 44)];
} else {
timerView.frame = CGRectMake(0, 0, 36, 44);
}
[barButtons addObject:[[UIBarButtonItem alloc] initWithCustomView:timerView]];
}
self.navigationItem.rightBarButtonItems = [barButtons copy];
}
- (void)updateNavigationBarSubtitleLabel
{
NSMutableAttributedString *subtitleText = [NSMutableAttributedString new];
if (self.thread.isMuted) {
// Show a "mute" icon before the navigation bar subtitle if this thread is muted.
[subtitleText
appendAttributedString:[[NSAttributedString alloc]
initWithString:@"\ue067 "
attributes:@{
NSFontAttributeName : [UIFont ows_elegantIconsFont:7.f],
NSForegroundColorAttributeName : [UIColor colorWithWhite:0.9f alpha:1.f],
}]];
}
BOOL isVerified = YES;
for (NSString *recipientId in self.thread.recipientIdentifiers) {
if ([[OWSIdentityManager sharedManager] verificationStateForRecipientId:recipientId]
!= OWSVerificationStateVerified) {
isVerified = NO;
break;
}
}
if (isVerified) {
// Show a "checkmark" icon before the navigation bar subtitle if this thread is verified.
[subtitleText
appendAttributedString:[[NSAttributedString alloc]
initWithString:@"\uf00c "
attributes:@{
NSFontAttributeName : [UIFont ows_fontAwesomeFont:10.f],
NSForegroundColorAttributeName : [UIColor colorWithWhite:0.9f alpha:1.f],
}]];
}
if (self.userLeftGroup) {
[subtitleText
appendAttributedString:[[NSAttributedString alloc]
initWithString:NSLocalizedString(@"GROUP_YOU_LEFT", @"")
attributes:@{
NSFontAttributeName : [UIFont ows_regularFontWithSize:9.f],
NSForegroundColorAttributeName : [UIColor colorWithWhite:0.9f alpha:1.f],
}]];
} else {
[subtitleText appendAttributedString:
[[NSAttributedString alloc]
initWithString:NSLocalizedString(@"MESSAGES_VIEW_TITLE_SUBTITLE",
@"The subtitle for the messages view title indicates that the "
@"title can be tapped to access settings for this conversation.")
attributes:@{
NSFontAttributeName : [UIFont ows_regularFontWithSize:9.f],
NSForegroundColorAttributeName : [UIColor colorWithWhite:0.9f alpha:1.f],
}]];
}
self.navigationBarSubtitleLabel.attributedText = subtitleText;
[self.navigationBarSubtitleLabel sizeToFit];
}
#pragma mark - Identity
/**
* Shows confirmation dialog if at least one of the recipient id's is not confirmed.
*
* returns YES if an alert was shown
* NO if there were no unconfirmed identities
*/
- (BOOL)showSafetyNumberConfirmationIfNecessaryWithConfirmationText:(NSString *)confirmationText
completion:(void (^)(BOOL didConfirmIdentity))completionHandler
{
return [SafetyNumberConfirmationAlert presentAlertIfNecessaryWithRecipientIds:self.thread.recipientIdentifiers
confirmationText:confirmationText
contactsManager:self.contactsManager
completion:^(BOOL didShowAlert) {
// Pre iOS-11, the keyboard and inputAccessoryView will obscure the alert if the keyboard is up when the
// alert is presented, so after hiding it, we regain first responder here.
if (@available(iOS 11.0, *)) {
// do nothing
} else {
[self becomeFirstResponder];
}
completionHandler(didShowAlert);
}
beforePresentationHandler:^(void) {
if (@available(iOS 11.0, *)) {
// do nothing
} else {
// Pre iOS-11, the keyboard and inputAccessoryView will obscure the alert if the keyboard is up when the
// alert is presented.
[self dismissKeyBoard];
[self resignFirstResponder];
}
}];
}
- (void)showFingerprintWithRecipientId:(NSString *)recipientId
{
// Ensure keyboard isn't hiding the "safety numbers changed" interaction when we
// return from FingerprintViewController.
[self dismissKeyBoard];
[FingerprintViewController presentFromViewController:self recipientId:recipientId];
}
#pragma mark - Calls
- (void)callAction
{
OWSAssert([self.thread isKindOfClass:[TSContactThread class]]);
if (![self canCall]) {
DDLogWarn(@"Tried to initiate a call but thread is not callable.");
return;
}
__weak ConversationViewController *weakSelf = self;
if ([self isBlockedContactConversation]) {
[self showUnblockContactUI:^(BOOL isBlocked) {
if (!isBlocked) {
[weakSelf callAction];
}
}];
return;
}
BOOL didShowSNAlert =
[self showSafetyNumberConfirmationIfNecessaryWithConfirmationText:[CallStrings confirmAndCallButtonTitle]
completion:^(BOOL didConfirmIdentity) {
if (didConfirmIdentity) {
[weakSelf callAction];
}
}];
if (didShowSNAlert) {
return;
}
[self.outboundCallInitiator initiateCallWithRecipientId:self.thread.contactIdentifier];
}
- (BOOL)canCall
{
return !(self.isGroupConversation ||
[((TSContactThread *)self.thread).contactIdentifier isEqualToString:[TSAccountManager localNumber]]);
}
#pragma mark - JSQMessagesViewController method overrides
#pragma mark - Dynamic Text
/**
Called whenever the user manually changes the dynamic type options inside Settings.
@param notification NSNotification with the dynamic type change information.
*/
- (void)didChangePreferredContentSize:(NSNotification *)notification
{
DDLogInfo(@"%@ didChangePreferredContentSize", self.logTag);
// Evacuate cached cell sizes.
for (ConversationViewItem *viewItem in self.viewItems) {
[viewItem clearCachedLayoutState];
}
[self resetContentAndLayout];
[self.inputToolbar updateFontSizes];
}
#pragma mark - Actions
- (void)showNoLongerVerifiedUI
{
NSArray<NSString *> *noLongerVerifiedRecipientIds = [self noLongerVerifiedRecipientIds];
if (noLongerVerifiedRecipientIds.count > 1) {
[self showConversationSettingsAndShowVerification:YES];
} else if (noLongerVerifiedRecipientIds.count == 1) {
// Pick one in an arbitrary but deterministic manner.
NSString *recipientId = noLongerVerifiedRecipientIds.lastObject;
[self showFingerprintWithRecipientId:recipientId];
}
}
- (void)showConversationSettings
{
[self showConversationSettingsAndShowVerification:NO];
}
- (void)showConversationSettingsAndShowVerification:(BOOL)showVerification
{
if (self.userLeftGroup) {
DDLogDebug(@"%@ Ignoring request to show conversation settings, since user left group", self.logTag);
return;
}
OWSConversationSettingsViewController *settingsVC = [OWSConversationSettingsViewController new];
settingsVC.conversationSettingsViewDelegate = self;
[settingsVC configureWithThread:self.thread uiDatabaseConnection:self.uiDatabaseConnection];
settingsVC.showVerificationOnAppear = showVerification;
[self.navigationController pushViewController:settingsVC animated:YES];
}
#pragma mark - DisappearingTimerConfigurationViewDelegate
- (void)disappearingTimerConfigurationViewWasTapped:(DisappearingTimerConfigurationView *)disappearingTimerView
{
DDLogDebug(@"%@ Tapped timer in navbar", self.logTag);
[self showConversationSettings];
}
#pragma mark - Load More
- (void)autoLoadMoreIfNecessary
{
if (self.isUserScrolling || !self.isViewVisible || self.isAppInBackground) {
return;
}
if (!self.showLoadMoreHeader) {
return;
}
static const CGFloat kThreshold = 50.f;
if (self.collectionView.contentOffset.y < kThreshold) {
[self loadMoreMessages];
}
}
- (void)loadMoreMessages
{
BOOL hasEarlierUnseenMessages = self.dynamicInteractions.hasMoreUnseenMessages;
// We want to restore the current scroll state after we update the range, update
// the dynamic interactions and re-layout. Here we take a "before" snapshot.
CGFloat scrollDistanceToBottom = self.safeContentHeight - self.collectionView.contentOffset.y;
self.lastRangeLength = MIN(self.lastRangeLength + kYapDatabasePageSize, (NSUInteger) kYapDatabaseRangeMaxLength);
[self resetMappings];
[self.layout prepareLayout];
self.collectionView.contentOffset = CGPointMake(0, self.safeContentHeight - scrollDistanceToBottom);
// Dont auto-scroll after “loading more messages” unless we have “more unseen messages”.
//
// Otherwise, tapping on "load more messages" autoscrolls you downward which is completely wrong.
if (hasEarlierUnseenMessages) {
[self scrollToUnreadIndicatorAnimated];
}
}
- (void)updateShowLoadMoreHeader
{
if (self.lastRangeLength == kYapDatabaseRangeMaxLength) {
self.showLoadMoreHeader = NO;
return;
}
NSUInteger loadWindowSize = [self.messageMappings numberOfItemsInGroup:self.thread.uniqueId];
__block NSUInteger totalMessageCount;
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
totalMessageCount =
[[transaction ext:TSMessageDatabaseViewExtensionName] numberOfItemsInGroup:self.thread.uniqueId];
}];
self.showLoadMoreHeader = loadWindowSize < totalMessageCount;
}
- (void)setShowLoadMoreHeader:(BOOL)showLoadMoreHeader
{
BOOL valueChanged = _showLoadMoreHeader != showLoadMoreHeader;
_showLoadMoreHeader = showLoadMoreHeader;
self.loadMoreHeader.hidden = !showLoadMoreHeader;
self.loadMoreHeader.userInteractionEnabled = showLoadMoreHeader;
if (valueChanged) {
[self.collectionView.collectionViewLayout invalidateLayout];
[self.collectionView reloadData];
}
}
- (void)updateDisappearingMessagesConfiguration
{
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *_Nonnull transaction) {
self.disappearingMessagesConfiguration =
[OWSDisappearingMessagesConfiguration fetchObjectWithUniqueID:self.thread.uniqueId transaction:transaction];
}];
}
- (void)setDisappearingMessagesConfiguration:
(nullable OWSDisappearingMessagesConfiguration *)disappearingMessagesConfiguration
{
if (_disappearingMessagesConfiguration.isEnabled == disappearingMessagesConfiguration.isEnabled
&& _disappearingMessagesConfiguration.durationSeconds == disappearingMessagesConfiguration.durationSeconds) {
return;
}
_disappearingMessagesConfiguration = disappearingMessagesConfiguration;
[self updateBarButtonItems];
}
- (void)updateMessageMappingRangeOptions
{
NSUInteger rangeLength = 0;
if (self.lastRangeLength == 0) {
// If this is the first time we're configuring the range length,
// try to take into account the position of the unread indicator.
OWSAssert(self.dynamicInteractions);
if (self.dynamicInteractions.unreadIndicatorPosition) {
NSUInteger unreadIndicatorPosition
= (NSUInteger)[self.dynamicInteractions.unreadIndicatorPosition longValue];
// If there is an unread indicator, increase the initial load window
// to include it.
OWSAssert(unreadIndicatorPosition > 0);
OWSAssert(unreadIndicatorPosition <= kYapDatabaseRangeMaxLength);
// We'd like to include at least N seen messages,
// to give the user the context of where they left off the conversation.
const NSUInteger kPreferredSeenMessageCount = 1;
rangeLength = unreadIndicatorPosition + kPreferredSeenMessageCount;
}
}
// Always try to load at least a single page of messages.
rangeLength = MAX(rangeLength, kYapDatabasePageSize);
// Range size should monotonically increase.
rangeLength = MAX(rangeLength, self.lastRangeLength);
// Enforce max range size.
rangeLength = MIN(rangeLength, kYapDatabaseRangeMaxLength);
self.lastRangeLength = rangeLength;
YapDatabaseViewRangeOptions *rangeOptions =
[YapDatabaseViewRangeOptions flexibleRangeWithLength:rangeLength offset:0 from:YapDatabaseViewEnd];
rangeOptions.maxLength = MAX(rangeLength, kYapDatabaseRangeMaxLength);
rangeOptions.minLength = kYapDatabaseRangeMinLength;
[self.messageMappings setRangeOptions:rangeOptions forGroup:self.thread.uniqueId];
[self updateShowLoadMoreHeader];
[self reloadViewItems];
}
#pragma mark Bubble User Actions
- (void)handleFailedDownloadTapForMessage:(TSMessage *)message
attachmentPointer:(TSAttachmentPointer *)attachmentPointer
{
UIAlertController *actionSheetController = [UIAlertController
alertControllerWithTitle:NSLocalizedString(@"MESSAGES_VIEW_FAILED_DOWNLOAD_ACTIONSHEET_TITLE", comment
: "Action sheet title after tapping on failed download.")
message:nil
preferredStyle:UIAlertControllerStyleActionSheet];
[actionSheetController addAction:[OWSAlerts cancelAction]];
UIAlertAction *deleteMessageAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"TXT_DELETE_TITLE", @"")
style:UIAlertActionStyleDestructive
handler:^(UIAlertAction *_Nonnull action) {
[message remove];
}];
[actionSheetController addAction:deleteMessageAction];
UIAlertAction *resendMessageAction = [UIAlertAction
actionWithTitle:NSLocalizedString(@"MESSAGES_VIEW_FAILED_DOWNLOAD_RETRY_ACTION", @"Action sheet button text")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
OWSAttachmentsProcessor *processor =
[[OWSAttachmentsProcessor alloc] initWithAttachmentPointer:attachmentPointer
networkManager:self.networkManager
primaryStorage:self.primaryStorage];
[processor fetchAttachmentsForMessage:message
primaryStorage:self.primaryStorage
success:^(TSAttachmentStream *_Nonnull attachmentStream) {
DDLogInfo(
@"%@ Successfully redownloaded attachment in thread: %@", self.logTag, message.thread);
}
failure:^(NSError *_Nonnull error) {
DDLogWarn(@"%@ Failed to redownload message with error: %@", self.logTag, error);
}];
}];
[actionSheetController addAction:resendMessageAction];
[self dismissKeyBoard];
[self presentViewController:actionSheetController animated:YES completion:nil];
}
- (void)handleUnsentMessageTap:(TSOutgoingMessage *)message
{
UIAlertController *actionSheetController =
[UIAlertController alertControllerWithTitle:message.mostRecentFailureText
message:nil
preferredStyle:UIAlertControllerStyleActionSheet];
[actionSheetController addAction:[OWSAlerts cancelAction]];
UIAlertAction *deleteMessageAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"TXT_DELETE_TITLE", @"")
style:UIAlertActionStyleDestructive
handler:^(UIAlertAction *_Nonnull action) {
[message remove];
}];
[actionSheetController addAction:deleteMessageAction];
UIAlertAction *resendMessageAction =
[UIAlertAction actionWithTitle:NSLocalizedString(@"SEND_AGAIN_BUTTON", @"")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
[self.messageSender enqueueMessage:message
success:^{
DDLogInfo(@"%@ Successfully resent failed message.", self.logTag);
}
failure:^(NSError *_Nonnull error) {
DDLogWarn(@"%@ Failed to send message with error: %@", self.logTag, error);
}];
}];
[actionSheetController addAction:resendMessageAction];
[self dismissKeyBoard];
[self presentViewController:actionSheetController animated:YES completion:nil];
}
- (void)handleErrorMessageTap:(TSErrorMessage *)message
{
OWSAssert(message);
switch (message.errorType) {
case TSErrorMessageInvalidKeyException:
break;
case TSErrorMessageNonBlockingIdentityChange:
[self tappedNonBlockingIdentityChangeForRecipientId:message.recipientId];
return;
case TSErrorMessageWrongTrustedIdentityKey:
OWSAssert([message isKindOfClass:[TSInvalidIdentityKeyErrorMessage class]]);
[self tappedInvalidIdentityKeyErrorMessage:(TSInvalidIdentityKeyErrorMessage *)message];
return;
case TSErrorMessageMissingKeyId:
// Unused.
break;
case TSErrorMessageNoSession:
break;
case TSErrorMessageInvalidMessage:
[self tappedCorruptedMessage:message];
return;
case TSErrorMessageDuplicateMessage:
// Unused.
break;
case TSErrorMessageInvalidVersion:
break;
case TSErrorMessageUnknownContactBlockOffer:
// Unused.
OWSFail(@"TSErrorMessageUnknownContactBlockOffer");
return;
case TSErrorMessageGroupCreationFailed:
[self resendGroupUpdateForErrorMessage:message];
return;
}
DDLogWarn(@"%@ Unhandled tap for error message:%@", self.logTag, message);
}
- (void)tappedNonBlockingIdentityChangeForRecipientId:(nullable NSString *)signalId
{
if (signalId == nil) {
if (self.thread.isGroupThread) {
// Before 2.13 we didn't track the recipient id in the identity change error.
DDLogWarn(@"%@ Ignoring tap on legacy nonblocking identity change since it has no signal id", self.logTag);
} else {
DDLogInfo(
@"%@ Assuming tap on legacy nonblocking identity change corresponds to current contact thread: %@",
self.logTag,
self.thread.contactIdentifier);
signalId = self.thread.contactIdentifier;
}
}
[self showFingerprintWithRecipientId:signalId];
}
- (void)handleInfoMessageTap:(TSInfoMessage *)message
{
OWSAssert(message);
switch (message.messageType) {
case TSInfoMessageUserNotRegistered:
break;
case TSInfoMessageTypeSessionDidEnd:
break;
case TSInfoMessageTypeUnsupportedMessage:
// Unused.
break;
case TSInfoMessageAddToContactsOffer:
// Unused.
OWSFail(@"TSInfoMessageAddToContactsOffer");
return;
case TSInfoMessageAddUserToProfileWhitelistOffer:
// Unused.
OWSFail(@"TSInfoMessageAddUserToProfileWhitelistOffer");
return;
case TSInfoMessageAddGroupToProfileWhitelistOffer:
// Unused.
OWSFail(@"TSInfoMessageAddGroupToProfileWhitelistOffer");
return;
case TSInfoMessageTypeGroupUpdate:
[self showConversationSettings];
return;
case TSInfoMessageTypeGroupQuit:
break;
case TSInfoMessageTypeDisappearingMessagesUpdate:
[self showConversationSettings];
return;
case TSInfoMessageVerificationStateChange:
[self showFingerprintWithRecipientId:((OWSVerificationStateChangeMessage *)message).recipientId];
break;
}
DDLogInfo(@"%@ Unhandled tap for info message:%@", self.logTag, message);
}
- (void)tappedCorruptedMessage:(TSErrorMessage *)message
{
NSString *alertMessage = [NSString
stringWithFormat:NSLocalizedString(@"CORRUPTED_SESSION_DESCRIPTION", @"ActionSheet title"), self.thread.name];
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:nil
message:alertMessage
preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:[OWSAlerts cancelAction]];
UIAlertAction *resetSessionAction = [UIAlertAction
actionWithTitle:NSLocalizedString(@"FINGERPRINT_SHRED_KEYMATERIAL_BUTTON", @"")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
if (![self.thread isKindOfClass:[TSContactThread class]]) {
// Corrupt Message errors only appear in contact threads.
DDLogError(@"%@ Unexpected request to reset session in group thread. Refusing", self.logTag);
return;
}
TSContactThread *contactThread = (TSContactThread *)self.thread;
[OWSSessionResetJob runWithContactThread:contactThread
messageSender:self.messageSender
primaryStorage:self.primaryStorage];
}];
[alertController addAction:resetSessionAction];
[self dismissKeyBoard];
[self presentViewController:alertController animated:YES completion:nil];
}
- (void)tappedInvalidIdentityKeyErrorMessage:(TSInvalidIdentityKeyErrorMessage *)errorMessage
{
NSString *keyOwner = [self.contactsManager displayNameForPhoneIdentifier:errorMessage.theirSignalId];
NSString *titleFormat = NSLocalizedString(@"SAFETY_NUMBERS_ACTIONSHEET_TITLE", @"Action sheet heading");
NSString *titleText = [NSString stringWithFormat:titleFormat, keyOwner];
UIAlertController *actionSheetController =
[UIAlertController alertControllerWithTitle:titleText
message:nil
preferredStyle:UIAlertControllerStyleActionSheet];
[actionSheetController addAction:[OWSAlerts cancelAction]];
UIAlertAction *showSafteyNumberAction =
[UIAlertAction actionWithTitle:NSLocalizedString(@"SHOW_SAFETY_NUMBER_ACTION", @"Action sheet item")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
DDLogInfo(@"%@ Remote Key Changed actions: Show fingerprint display", self.logTag);
[self showFingerprintWithRecipientId:errorMessage.theirSignalId];
}];
[actionSheetController addAction:showSafteyNumberAction];
UIAlertAction *acceptSafetyNumberAction =
[UIAlertAction actionWithTitle:NSLocalizedString(@"ACCEPT_NEW_IDENTITY_ACTION", @"Action sheet item")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
DDLogInfo(@"%@ Remote Key Changed actions: Accepted new identity key", self.logTag);
// DEPRECATED: we're no longer creating these incoming SN error's per message,
// but there will be some legacy ones in the wild, behind which await
// as-of-yet-undecrypted messages
if ([errorMessage isKindOfClass:[TSInvalidIdentityKeyReceivingErrorMessage class]]) {
[errorMessage acceptNewIdentityKey];
}
}];
[actionSheetController addAction:acceptSafetyNumberAction];
[self dismissKeyBoard];
[self presentViewController:actionSheetController animated:YES completion:nil];
}
- (void)handleCallTap:(TSCall *)call
{
OWSAssert(call);
if (![self.thread isKindOfClass:[TSContactThread class]]) {
OWSFail(@"%@ unexpected thread: %@ in %s", self.logTag, self.thread, __PRETTY_FUNCTION__);
return;
}
TSContactThread *contactThread = (TSContactThread *)self.thread;
NSString *displayName = [self.contactsManager displayNameForPhoneIdentifier:contactThread.contactIdentifier];
UIAlertController *alertController = [UIAlertController
alertControllerWithTitle:[CallStrings callBackAlertTitle]
message:[NSString stringWithFormat:[CallStrings callBackAlertMessageFormat], displayName]
preferredStyle:UIAlertControllerStyleAlert];
__weak ConversationViewController *weakSelf = self;
UIAlertAction *callAction = [UIAlertAction actionWithTitle:[CallStrings callBackAlertCallButton]
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
[weakSelf callAction];
}];
[alertController addAction:callAction];
[alertController addAction:[OWSAlerts cancelAction]];
[self dismissKeyBoard];
[self presentViewController:alertController animated:YES completion:nil];
}
#pragma mark - ConversationViewCellDelegate
- (NSAttributedString *)attributedContactOrProfileNameForPhoneIdentifier:(NSString *)recipientId
{
OWSAssertIsOnMainThread();
OWSAssert(recipientId.length > 0);
return [self.contactsManager attributedContactOrProfileNameForPhoneIdentifier:recipientId];
}
- (void)tappedUnknownContactBlockOfferMessage:(OWSContactOffersInteraction *)interaction
{
if (![self.thread isKindOfClass:[TSContactThread class]]) {
OWSFail(@"%@ unexpected thread: %@ in %s", self.logTag, self.thread, __PRETTY_FUNCTION__);
return;
}
TSContactThread *contactThread = (TSContactThread *)self.thread;
NSString *displayName = [self.contactsManager displayNameForPhoneIdentifier:interaction.recipientId];
NSString *title =
[NSString stringWithFormat:NSLocalizedString(@"BLOCK_OFFER_ACTIONSHEET_TITLE_FORMAT",
@"Title format for action sheet that offers to block an unknown user."
@"Embeds {{the unknown user's name or phone number}}."),
[BlockListUIUtils formatDisplayNameForAlertTitle:displayName]];
UIAlertController *actionSheetController =
[UIAlertController alertControllerWithTitle:title message:nil preferredStyle:UIAlertControllerStyleActionSheet];
[actionSheetController addAction:[OWSAlerts cancelAction]];
UIAlertAction *blockAction = [UIAlertAction
actionWithTitle:NSLocalizedString(
@"BLOCK_OFFER_ACTIONSHEET_BLOCK_ACTION", @"Action sheet that will block an unknown user.")
style:UIAlertActionStyleDestructive
handler:^(UIAlertAction *_Nonnull action) {
DDLogInfo(@"%@ Blocking an unknown user.", self.logTag);
[self.blockingManager addBlockedPhoneNumber:interaction.recipientId];
// Delete the offers.
[self.editingDatabaseConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
contactThread.hasDismissedOffers = YES;
[contactThread saveWithTransaction:transaction];
[interaction removeWithTransaction:transaction];
}];
}];
[actionSheetController addAction:blockAction];
[self dismissKeyBoard];
[self presentViewController:actionSheetController animated:YES completion:nil];
}
- (void)tappedAddToContactsOfferMessage:(OWSContactOffersInteraction *)interaction
{
if (!self.contactsManager.supportsContactEditing) {
OWSFail(@"%@ Contact editing not supported", self.logTag);
return;
}
if (![self.thread isKindOfClass:[TSContactThread class]]) {
OWSFail(@"%@ unexpected thread: %@ in %s", self.logTag, self.thread, __PRETTY_FUNCTION__);
return;
}
TSContactThread *contactThread = (TSContactThread *)self.thread;
[self.contactsViewHelper presentContactViewControllerForRecipientId:contactThread.contactIdentifier
fromViewController:self
editImmediately:YES];
// Delete the offers.
[self.editingDatabaseConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
contactThread.hasDismissedOffers = YES;
[contactThread saveWithTransaction:transaction];
[interaction removeWithTransaction:transaction];
}];
}
- (void)tappedAddToProfileWhitelistOfferMessage:(OWSContactOffersInteraction *)interaction
{
// This is accessed via the contact offer. Group whitelisting happens via a different interaction.
if (![self.thread isKindOfClass:[TSContactThread class]]) {
OWSFail(@"%@ unexpected thread: %@ in %s", self.logTag, self.thread, __PRETTY_FUNCTION__);
return;
}
TSContactThread *contactThread = (TSContactThread *)self.thread;
[self presentAddThreadToProfileWhitelistWithSuccess:^() {
// Delete the offers.
[self.editingDatabaseConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
contactThread.hasDismissedOffers = YES;
[contactThread saveWithTransaction:transaction];
[interaction removeWithTransaction:transaction];
}];
}];
}
- (void)presentAddThreadToProfileWhitelistWithSuccess:(void (^)(void))successHandler
{
[[OWSProfileManager sharedManager] presentAddThreadToProfileWhitelist:self.thread
fromViewController:self
success:successHandler];
}
#pragma mark - Message Events
- (void)didTapImageViewItem:(ConversationViewItem *)viewItem
attachmentStream:(TSAttachmentStream *)attachmentStream
imageView:(UIView *)imageView
{
OWSAssertIsOnMainThread();
OWSAssert(viewItem);
OWSAssert(attachmentStream);
OWSAssert(imageView);
[self dismissKeyBoard];
if (![viewItem.interaction isKindOfClass:[TSMessage class]]) {
OWSFail(@"Unexpected viewItem.interaction");
return;
}
TSMessage *mediaMessage = (TSMessage *)viewItem.interaction;
MediaGalleryViewController *vc = [[MediaGalleryViewController alloc]
initWithThread:self.thread
uiDatabaseConnection:self.uiDatabaseConnection
options:MediaGalleryOptionSliderEnabled | MediaGalleryOptionShowAllMediaButton];
[vc presentDetailViewFromViewController:self mediaMessage:mediaMessage replacingView:imageView];
}
- (void)didTapVideoViewItem:(ConversationViewItem *)viewItem
attachmentStream:(TSAttachmentStream *)attachmentStream
imageView:(UIImageView *)imageView
{
OWSAssertIsOnMainThread();
OWSAssert(viewItem);
OWSAssert(attachmentStream);
[self dismissKeyBoard];
if (![viewItem.interaction isKindOfClass:[TSMessage class]]) {
OWSFail(@"Unexpected viewItem.interaction");
return;
}
TSMessage *mediaMessage = (TSMessage *)viewItem.interaction;
MediaGalleryViewController *vc = [[MediaGalleryViewController alloc]
initWithThread:self.thread
uiDatabaseConnection:self.uiDatabaseConnection
options:MediaGalleryOptionSliderEnabled | MediaGalleryOptionShowAllMediaButton];
[vc presentDetailViewFromViewController:self mediaMessage:mediaMessage replacingView:imageView];
}
- (void)didTapAudioViewItem:(ConversationViewItem *)viewItem attachmentStream:(TSAttachmentStream *)attachmentStream
{
OWSAssertIsOnMainThread();
OWSAssert(viewItem);
OWSAssert(attachmentStream);
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath:[attachmentStream.mediaURL path]]) {
OWSFail(@"%@ Missing video file: %@", self.logTag, attachmentStream.mediaURL);
}
[self dismissKeyBoard];
if (self.audioAttachmentPlayer) {
// Is this player associated with this media adapter?
if (self.audioAttachmentPlayer.owner == viewItem) {
// Tap to pause & unpause.
[self.audioAttachmentPlayer togglePlayState];
return;
}
[self.audioAttachmentPlayer stop];
self.audioAttachmentPlayer = nil;
}
self.audioAttachmentPlayer = [[OWSAudioPlayer alloc] initWithMediaUrl:attachmentStream.mediaURL delegate:viewItem];
// Associate the player with this media adapter.
self.audioAttachmentPlayer.owner = viewItem;
[self.audioAttachmentPlayer playWithPlaybackAudioCategory];
}
- (void)didTapTruncatedTextMessage:(ConversationViewItem *)conversationItem
{
OWSAssertIsOnMainThread();
OWSAssert(conversationItem);
OWSAssert([conversationItem.interaction isKindOfClass:[TSMessage class]]);
LongTextViewController *view = [[LongTextViewController alloc] initWithViewItem:conversationItem];
[self.navigationController pushViewController:view animated:YES];
}
- (void)didTapFailedIncomingAttachment:(ConversationViewItem *)viewItem
attachmentPointer:(TSAttachmentPointer *)attachmentPointer
{
OWSAssertIsOnMainThread();
OWSAssert(viewItem);
OWSAssert(attachmentPointer);
// Restart failed downloads
TSMessage *message = (TSMessage *)viewItem.interaction;
[self handleFailedDownloadTapForMessage:message attachmentPointer:attachmentPointer];
}
- (void)didTapFailedOutgoingMessage:(TSOutgoingMessage *)message
{
OWSAssertIsOnMainThread();
OWSAssert(message);
[self handleUnsentMessageTap:message];
}
- (void)showMetadataViewForViewItem:(ConversationViewItem *)conversationItem
{
OWSAssertIsOnMainThread();
OWSAssert(conversationItem);
OWSAssert([conversationItem.interaction isKindOfClass:[TSMessage class]]);
TSMessage *message = (TSMessage *)conversationItem.interaction;
MessageDetailViewController *view =
[[MessageDetailViewController alloc] initWithViewItem:conversationItem
message:message
mode:MessageMetadataViewModeFocusOnMetadata];
[self.navigationController pushViewController:view animated:YES];
}
- (void)conversationCell:(ConversationViewCell *)cell didTapReplyForViewItem:(ConversationViewItem *)conversationItem
{
DDLogDebug(@"%@ user did tap reply", self.logTag);
TSMessage *message = (TSMessage *)conversationItem.interaction;
if (![message isKindOfClass:[TSMessage class]]) {
OWSFail(@"%@ unexpected reply message: %@", self.logTag, message);
return;
}
__block TSQuotedMessage *quotedMessage;
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *_Nonnull transaction) {
quotedMessage = [OWSMessageUtils quotedMessageForMessage:message transaction:transaction];
}];
if (![quotedMessage isKindOfClass:[TSQuotedMessage class]]) {
OWSFail(@"%@ unexpected quotedMessage: %@", self.logTag, quotedMessage);
return;
}
[self.inputToolbar setQuotedMessage:quotedMessage];
[self.inputToolbar beginEditingTextMessage];
}
#pragma mark - System Messages
- (void)didTapSystemMessageWithInteraction:(TSInteraction *)interaction
{
OWSAssertIsOnMainThread();
OWSAssert(interaction);
if ([interaction isKindOfClass:[TSErrorMessage class]]) {
[self handleErrorMessageTap:(TSErrorMessage *)interaction];
} else if ([interaction isKindOfClass:[TSInfoMessage class]]) {
[self handleInfoMessageTap:(TSInfoMessage *)interaction];
} else if ([interaction isKindOfClass:[TSCall class]]) {
[self handleCallTap:(TSCall *)interaction];
} else {
OWSFail(@"Tap for system messages of unknown type: %@", [interaction class]);
}
}
#pragma mark - ContactEditingDelegate
- (void)didFinishEditingContact
{
DDLogDebug(@"%@ %s", self.logTag, __PRETTY_FUNCTION__);
[self dismissViewControllerAnimated:NO completion:nil];
}
#pragma mark - CNContactViewControllerDelegate
- (void)contactViewController:(CNContactViewController *)viewController
didCompleteWithContact:(nullable CNContact *)contact
{
if (contact) {
// Saving normally returns you to the "Show Contact" view
// which we're not interested in, so we skip it here. There is
// an unfortunate blip of the "Show Contact" view on slower devices.
DDLogDebug(@"%@ completed editing contact.", self.logTag);
[self dismissViewControllerAnimated:NO completion:nil];
} else {
DDLogDebug(@"%@ canceled editing contact.", self.logTag);
[self dismissViewControllerAnimated:YES completion:nil];
}
}
#pragma mark - ContactsViewHelperDelegate
- (void)contactsViewHelperDidUpdateContacts
{
[self ensureDynamicInteractions];
}
- (void)ensureDynamicInteractions
{
OWSAssertIsOnMainThread();
const int currentMaxRangeSize = (int)self.lastRangeLength;
const int maxRangeSize = MAX(kConversationInitialMaxRangeSize, currentMaxRangeSize);
// `ensureDynamicInteractionsForThread` should operate on the latest thread contents, so
// we should _read_ from uiDatabaseConnection and _write_ to `editingDatabaseConnection`.
self.dynamicInteractions =
[ThreadUtil ensureDynamicInteractionsForThread:self.thread
contactsManager:self.contactsManager
blockingManager:self.blockingManager
dbConnection:self.editingDatabaseConnection
hideUnreadMessagesIndicator:self.hasClearedUnreadMessagesIndicator
firstUnseenInteractionTimestamp:self.dynamicInteractions.firstUnseenInteractionTimestamp
maxRangeSize:maxRangeSize];
}
- (void)clearUnreadMessagesIndicator
{
OWSAssertIsOnMainThread();
if (self.hasClearedUnreadMessagesIndicator) {
// ensureDynamicInteractionsForThread is somewhat expensive
// so we don't want to call it unnecessarily.
return;
}
// Once we've cleared the unread messages indicator,
// make sure we don't show it again.
self.hasClearedUnreadMessagesIndicator = YES;
if (self.dynamicInteractions.unreadIndicatorPosition) {
// If we've just cleared the "unread messages" indicator,
// update the dynamic interactions.
[self ensureDynamicInteractions];
}
}
- (void)createConversationScrollButtons
{
self.scrollDownButton = [[ConversationScrollButton alloc] initWithIconText:@"\uf103"];
[self.scrollDownButton addTarget:self
action:@selector(scrollDownButtonTapped)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.scrollDownButton];
[self.scrollDownButton autoSetDimension:ALDimensionWidth toSize:ConversationScrollButton.buttonSize];
[self.scrollDownButton autoSetDimension:ALDimensionHeight toSize:ConversationScrollButton.buttonSize];
self.scrollDownButtonButtomConstraint =
[self.scrollDownButton autoPinEdge:ALEdgeBottom toEdge:ALEdgeBottom ofView:self.collectionView];
[self.scrollDownButton autoPinEdgeToSuperviewEdge:ALEdgeTrailing];
#ifdef DEBUG
self.scrollUpButton = [[ConversationScrollButton alloc] initWithIconText:@"\uf102"];
[self.scrollUpButton addTarget:self
action:@selector(scrollUpButtonTapped)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.scrollUpButton];
[self.scrollUpButton autoSetDimension:ALDimensionWidth toSize:ConversationScrollButton.buttonSize];
[self.scrollUpButton autoSetDimension:ALDimensionHeight toSize:ConversationScrollButton.buttonSize];
[self.scrollUpButton autoPinToTopLayoutGuideOfViewController:self withInset:0];
[self.scrollUpButton autoPinEdgeToSuperviewEdge:ALEdgeTrailing];
#endif
}
- (void)setHasUnreadMessages:(BOOL)hasUnreadMessages
{
if (_hasUnreadMessages == hasUnreadMessages) {
return;
}
_hasUnreadMessages = hasUnreadMessages;
self.scrollDownButton.hasUnreadMessages = hasUnreadMessages;
[self ensureDynamicInteractions];
}
- (void)scrollDownButtonTapped
{
#ifdef DEBUG
CGPoint contentOffset = self.collectionView.contentOffset;
contentOffset.y += self.collectionView.height
- (self.collectionView.contentInset.top + self.collectionView.contentInset.bottom);
[self.collectionView setContentOffset:contentOffset animated:NO];
return;
#endif
NSIndexPath *indexPathOfUnreadMessagesIndicator = [self indexPathOfUnreadMessagesIndicator];
if (indexPathOfUnreadMessagesIndicator != nil) {
NSInteger unreadRow = indexPathOfUnreadMessagesIndicator.row;
BOOL isScrolledAboveUnreadIndicator = YES;
NSArray<NSIndexPath *> *visibleIndices = self.collectionView.indexPathsForVisibleItems;
for (NSIndexPath *indexPath in visibleIndices) {
if (indexPath.row > unreadRow) {
isScrolledAboveUnreadIndicator = NO;
break;
}
}
if (isScrolledAboveUnreadIndicator) {
// Only scroll as far as the unread indicator if we're scrolled above the unread indicator.
[[self collectionView] scrollToItemAtIndexPath:indexPathOfUnreadMessagesIndicator
atScrollPosition:UICollectionViewScrollPositionTop
animated:YES];
return;
}
}
[self scrollToBottomAnimated:YES];
}
#ifdef DEBUG
- (void)scrollUpButtonTapped
{
[self.collectionView setContentOffset:CGPointZero animated:YES];
}
#endif
- (void)ensureScrollDownButton
{
OWSAssertIsOnMainThread();
BOOL shouldShowScrollDownButton = NO;
CGFloat scrollSpaceToBottom = (self.safeContentHeight + self.collectionView.contentInset.bottom
- (self.collectionView.contentOffset.y + self.collectionView.frame.size.height));
CGFloat pageHeight = (self.collectionView.frame.size.height
- (self.collectionView.contentInset.top + self.collectionView.contentInset.bottom));
// Show "scroll down" button if user is scrolled up at least
// one page.
BOOL isScrolledUp = scrollSpaceToBottom > pageHeight * 1.f;
if (self.viewItems.count > 0) {
ConversationViewItem *lastViewItem = [self.viewItems lastObject];
OWSAssert(lastViewItem);
if (lastViewItem.interaction.timestampForSorting > self.lastVisibleTimestamp) {
shouldShowScrollDownButton = YES;
} else if (isScrolledUp) {
shouldShowScrollDownButton = YES;
}
}
if (shouldShowScrollDownButton) {
self.scrollDownButton.hidden = NO;
} else {
self.scrollDownButton.hidden = YES;
}
#ifdef DEBUG
BOOL shouldShowScrollUpButton = self.collectionView.contentOffset.y > 0;
if (shouldShowScrollUpButton) {
self.scrollUpButton.hidden = NO;
} else {
self.scrollUpButton.hidden = YES;
}
#endif
}
#pragma mark - Attachment Picking: Documents
- (void)showAttachmentDocumentPickerMenu
{
NSString *allItems = (__bridge NSString *)kUTTypeItem;
NSArray<NSString *> *documentTypes = @[ allItems ];
// UIDocumentPickerModeImport copies to a temp file within our container.
// It uses more memory than "open" but lets us avoid working with security scoped URLs.
UIDocumentPickerMode pickerMode = UIDocumentPickerModeImport;
// TODO: UIDocumentMenuViewController is deprecated; we should use UIDocumentPickerViewController
// instead.
UIDocumentMenuViewController *menuController =
[[UIDocumentMenuViewController alloc] initWithDocumentTypes:documentTypes inMode:pickerMode];
menuController.delegate = self;
UIImage *takeMediaImage = [UIImage imageNamed:@"actionsheet_camera_black"];
OWSAssert(takeMediaImage);
[menuController addOptionWithTitle:NSLocalizedString(
@"MEDIA_FROM_LIBRARY_BUTTON", @"media picker option to choose from library")
image:takeMediaImage
order:UIDocumentMenuOrderFirst
handler:^{
[self chooseFromLibraryAsDocument];
}];
[self dismissKeyBoard];
[self presentViewController:menuController animated:YES completion:nil];
}
#pragma mark - Attachment Picking: GIFs
- (void)showGifPicker
{
GifPickerViewController *view =
[[GifPickerViewController alloc] initWithThread:self.thread messageSender:self.messageSender];
view.delegate = self;
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:view];
[self dismissKeyBoard];
[self presentViewController:navigationController animated:YES completion:nil];
}
#pragma mark GifPickerViewControllerDelegate
- (void)gifPickerDidSelectWithAttachment:(SignalAttachment *)attachment
{
OWSAssert(attachment);
[self tryToSendAttachmentIfApproved:attachment];
[ThreadUtil addThreadToProfileWhitelistIfEmptyContactThread:self.thread];
[self ensureDynamicInteractions];
}
- (void)messageWasSent:(TSOutgoingMessage *)message
{
OWSAssertIsOnMainThread();
OWSAssert(message);
[self updateLastVisibleTimestamp:message.timestampForSorting];
self.lastMessageSentDate = [NSDate new];
[self clearUnreadMessagesIndicator];
self.inputToolbar.quotedMessage = nil;
if ([Environment.preferences soundInForeground]) {
[JSQSystemSoundPlayer jsq_playMessageSentSound];
}
}
#pragma mark UIDocumentMenuDelegate
- (void)documentMenu:(UIDocumentMenuViewController *)documentMenu
didPickDocumentPicker:(UIDocumentPickerViewController *)documentPicker
{
documentPicker.delegate = self;
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(11, 0)) {
// post iOS11, document picker has no blue header.
[UIUtil applyDefaultSystemAppearence];
}
[self dismissKeyBoard];
[self presentViewController:documentPicker animated:YES completion:nil];
}
#pragma mark UIDocumentPickerDelegate
- (void)documentPicker:(UIDocumentPickerViewController *)controller didPickDocumentAtURL:(NSURL *)url
{
DDLogDebug(@"%@ Picked document at url: %@", self.logTag, url);
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(11, 0)) {
// post iOS11, document picker has no blue header.
[UIUtil applySignalAppearence];
}
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(11, 0)) {
// post iOS11, document picker has no blue header.
[UIUtil applySignalAppearence];
}
NSString *type;
NSError *typeError;
[url getResourceValue:&type forKey:NSURLTypeIdentifierKey error:&typeError];
if (typeError) {
OWSFail(
@"%@ Determining type of picked document at url: %@ failed with error: %@", self.logTag, url, typeError);
}
if (!type) {
OWSFail(@"%@ falling back to default filetype for picked document at url: %@", self.logTag, url);
type = (__bridge NSString *)kUTTypeData;
}
NSNumber *isDirectory;
NSError *isDirectoryError;
[url getResourceValue:&isDirectory forKey:NSURLIsDirectoryKey error:&isDirectoryError];
if (isDirectoryError) {
OWSFail(@"%@ Determining if picked document at url: %@ was a directory failed with error: %@",
self.logTag,
url,
isDirectoryError);
} else if ([isDirectory boolValue]) {
DDLogInfo(@"%@ User picked directory at url: %@", self.logTag, url);
dispatch_async(dispatch_get_main_queue(), ^{
[OWSAlerts
showAlertWithTitle:
NSLocalizedString(@"ATTACHMENT_PICKER_DOCUMENTS_PICKED_DIRECTORY_FAILED_ALERT_TITLE",
@"Alert title when picking a document fails because user picked a directory/bundle")
message:
NSLocalizedString(@"ATTACHMENT_PICKER_DOCUMENTS_PICKED_DIRECTORY_FAILED_ALERT_BODY",
@"Alert body when picking a document fails because user picked a directory/bundle")];
});
return;
}
NSString *filename = url.lastPathComponent;
if (!filename) {
OWSFail(@"%@ Unable to determine filename from url: %@", self.logTag, url);
filename = NSLocalizedString(
@"ATTACHMENT_DEFAULT_FILENAME", @"Generic filename for an attachment with no known name");
}
OWSAssert(type);
OWSAssert(filename);
DataSource *_Nullable dataSource = [DataSourcePath dataSourceWithURL:url];
if (!dataSource) {
OWSFail(@"%@ attachment data was unexpectedly empty for picked document url: %@", self.logTag, url);
dispatch_async(dispatch_get_main_queue(), ^{
[OWSAlerts showAlertWithTitle:NSLocalizedString(@"ATTACHMENT_PICKER_DOCUMENTS_FAILED_ALERT_TITLE",
@"Alert title when picking a document fails for an unknown reason")];
});
return;
}
[dataSource setSourceFilename:filename];
// Although we want to be able to send higher quality attachments throught the document picker
// it's more imporant that we ensure the sent format is one all clients can accept (e.g. *not* quicktime .mov)
if ([SignalAttachment isInvalidVideoWithDataSource:dataSource dataUTI:type]) {
[self sendQualityAdjustedAttachmentForVideo:url filename:filename skipApprovalDialog:NO];
return;
}
// "Document picker" attachments _SHOULD NOT_ be resized, if possible.
SignalAttachment *attachment =
[SignalAttachment attachmentWithDataSource:dataSource dataUTI:type imageQuality:TSImageQualityOriginal];
[self tryToSendAttachmentIfApproved:attachment];
}
#pragma mark - UIImagePickerController
/*
* Presenting UIImagePickerController
*/
- (void)takePictureOrVideo
{
[self ows_askForCameraPermissions:^(BOOL granted) {
if (!granted) {
DDLogWarn(@"%@ camera permission denied.", self.logTag);
return;
}
UIImagePickerController *picker = [UIImagePickerController new];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.mediaTypes = @[ (__bridge NSString *)kUTTypeImage, (__bridge NSString *)kUTTypeMovie ];
picker.allowsEditing = NO;
picker.delegate = self;
[self dismissKeyBoard];
[self presentViewController:picker animated:YES completion:[UIUtil modalCompletionBlock]];
}];
}
- (void)chooseFromLibraryAsDocument
{
OWSAssertIsOnMainThread();
[self chooseFromLibraryAsDocument:YES];
}
- (void)chooseFromLibraryAsMedia
{
OWSAssertIsOnMainThread();
[self chooseFromLibraryAsDocument:NO];
}
- (void)chooseFromLibraryAsDocument:(BOOL)shouldTreatAsDocument
{
OWSAssertIsOnMainThread();
self.isPickingMediaAsDocument = shouldTreatAsDocument;
[self ows_askForMediaLibraryPermissions:^(BOOL granted) {
if (!granted) {
DDLogWarn(@"%@ Media Library permission denied.", self.logTag);
return;
}
UIImagePickerController *picker = [UIImagePickerController new];
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
picker.delegate = self;
picker.mediaTypes = @[ (__bridge NSString *)kUTTypeImage, (__bridge NSString *)kUTTypeMovie ];
[self dismissKeyBoard];
[self presentViewController:picker animated:YES completion:[UIUtil modalCompletionBlock]];
}];
}
/*
* Dismissing UIImagePickerController
*/
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[UIUtil modalCompletionBlock]();
[self dismissViewControllerAnimated:YES completion:nil];
}
- (void)resetFrame
{
// fixes bug on frame being off after this selection
CGRect frame = [UIScreen mainScreen].applicationFrame;
self.view.frame = frame;
}
/*
* Fetching data from UIImagePickerController
*/
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary<NSString *, id> *)info
{
[UIUtil modalCompletionBlock]();
[self resetFrame];
NSURL *referenceURL = [info valueForKey:UIImagePickerControllerReferenceURL];
if (!referenceURL) {
DDLogVerbose(@"Could not retrieve reference URL for picked asset");
[self imagePickerController:picker didFinishPickingMediaWithInfo:info filename:nil];
return;
}
ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *imageAsset) {
ALAssetRepresentation *imageRep = [imageAsset defaultRepresentation];
NSString *filename = [imageRep filename];
[self imagePickerController:picker didFinishPickingMediaWithInfo:info filename:filename];
};
ALAssetsLibrary *assetslibrary = [[ALAssetsLibrary alloc] init];
[assetslibrary assetForURL:referenceURL
resultBlock:resultblock
failureBlock:^(NSError *error) {
OWSFail(@"Error retrieving filename for asset: %@", error);
}];
}
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary<NSString *, id> *)info
filename:(NSString *_Nullable)filename
{
OWSAssertIsOnMainThread();
void (^failedToPickAttachment)(NSError *error) = ^void(NSError *error) {
DDLogError(@"failed to pick attachment with error: %@", error);
};
NSString *mediaType = info[UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(__bridge NSString *)kUTTypeMovie]) {
// Video picked from library or captured with camera
NSURL *videoURL = info[UIImagePickerControllerMediaURL];
[self dismissViewControllerAnimated:YES
completion:^{
[self sendQualityAdjustedAttachmentForVideo:videoURL
filename:filename
skipApprovalDialog:NO];
}];
} else if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
// Static Image captured from camera
UIImage *imageFromCamera = [info[UIImagePickerControllerOriginalImage] normalizedImage];
[self dismissViewControllerAnimated:YES
completion:^{
OWSAssertIsOnMainThread();
if (imageFromCamera) {
// "Camera" attachments _SHOULD_ be resized, if possible.
SignalAttachment *attachment =
[SignalAttachment imageAttachmentWithImage:imageFromCamera
dataUTI:(NSString *)kUTTypeJPEG
filename:filename
imageQuality:TSImageQualityCompact];
if (!attachment || [attachment hasError]) {
DDLogWarn(@"%@ %s Invalid attachment: %@.",
self.logTag,
__PRETTY_FUNCTION__,
attachment ? [attachment errorName] : @"Missing data");
[self showErrorAlertForAttachment:attachment];
failedToPickAttachment(nil);
} else {
[self tryToSendAttachmentIfApproved:attachment skipApprovalDialog:NO];
}
} else {
failedToPickAttachment(nil);
}
}];
} else {
// Non-Video image picked from library
// To avoid re-encoding GIF and PNG's as JPEG we have to get the raw data of
// the selected item vs. using the UIImagePickerControllerOriginalImage
NSURL *assetURL = info[UIImagePickerControllerReferenceURL];
PHAsset *asset = [[PHAsset fetchAssetsWithALAssetURLs:@[ assetURL ] options:nil] lastObject];
if (!asset) {
return failedToPickAttachment(nil);
}
// Images chosen from the "attach document" UI should be sent as originals;
// images chosen from the "attach media" UI should be resized to "medium" size;
TSImageQuality imageQuality = (self.isPickingMediaAsDocument ? TSImageQualityOriginal : TSImageQualityMedium);
PHImageRequestOptions *options = [[PHImageRequestOptions alloc] init];
options.synchronous = YES; // We're only fetching one asset.
options.networkAccessAllowed = YES; // iCloud OK
options.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat; // Don't need quick/dirty version
[[PHImageManager defaultManager]
requestImageDataForAsset:asset
options:options
resultHandler:^(NSData *_Nullable imageData,
NSString *_Nullable dataUTI,
UIImageOrientation orientation,
NSDictionary *_Nullable assetInfo) {
NSError *assetFetchingError = assetInfo[PHImageErrorKey];
if (assetFetchingError || !imageData) {
return failedToPickAttachment(assetFetchingError);
}
OWSAssertIsOnMainThread();
DataSource *_Nullable dataSource =
[DataSourceValue dataSourceWithData:imageData utiType:dataUTI];
[dataSource setSourceFilename:filename];
SignalAttachment *attachment = [SignalAttachment attachmentWithDataSource:dataSource
dataUTI:dataUTI
imageQuality:imageQuality];
[self dismissViewControllerAnimated:YES
completion:^{
OWSAssertIsOnMainThread();
if (!attachment || [attachment hasError]) {
DDLogWarn(@"%@ %s Invalid attachment: %@.",
self.logTag,
__PRETTY_FUNCTION__,
attachment ? [attachment errorName] : @"Missing data");
[self showErrorAlertForAttachment:attachment];
failedToPickAttachment(nil);
} else {
[self tryToSendAttachmentIfApproved:attachment];
}
}];
}];
}
}
- (void)sendMessageAttachment:(SignalAttachment *)attachment
{
OWSAssertIsOnMainThread();
// TODO: Should we assume non-nil or should we check for non-nil?
OWSAssert(attachment != nil);
OWSAssert(![attachment hasError]);
OWSAssert([attachment mimeType].length > 0);
DDLogVerbose(@"Sending attachment. Size in bytes: %lu, contentType: %@",
(unsigned long)[attachment dataLength],
[attachment mimeType]);
BOOL didAddToProfileWhitelist = [ThreadUtil addThreadToProfileWhitelistIfEmptyContactThread:self.thread];
TSOutgoingMessage *message = [ThreadUtil sendMessageWithAttachment:attachment
inThread:self.thread
quotedMessage:self.inputToolbar.quotedMessage
messageSender:self.messageSender
completion:nil];
[self messageWasSent:message];
if (didAddToProfileWhitelist) {
[self ensureDynamicInteractions];
}
}
- (NSURL *)videoTempFolder
{
NSString *temporaryDirectory = NSTemporaryDirectory();
NSString *videoDirPath = [temporaryDirectory stringByAppendingPathComponent:@"videos"];
[OWSFileSystem ensureDirectoryExists:videoDirPath];
return [NSURL fileURLWithPath:videoDirPath];
}
- (void)sendQualityAdjustedAttachmentForVideo:(NSURL *)movieURL
filename:(NSString *)filename
skipApprovalDialog:(BOOL)skipApprovalDialog
{
OWSAssertIsOnMainThread();
[ModalActivityIndicatorViewController
presentFromViewController:self
canCancel:YES
backgroundBlock:^(ModalActivityIndicatorViewController *modalActivityIndicator) {
DataSource *dataSource = [DataSourcePath dataSourceWithURL:movieURL];
dataSource.sourceFilename = filename;
VideoCompressionResult *compressionResult =
[SignalAttachment compressVideoAsMp4WithDataSource:dataSource
dataUTI:(NSString *)kUTTypeMPEG4];
[compressionResult.attachmentPromise retainUntilComplete];
compressionResult.attachmentPromise.then(^(SignalAttachment *attachment) {
OWSAssertIsOnMainThread();
OWSAssert([attachment isKindOfClass:[SignalAttachment class]]);
if (modalActivityIndicator.wasCancelled) {
return;
}
[modalActivityIndicator dismissWithCompletion:^{
if (!attachment || [attachment hasError]) {
DDLogError(@"%@ %s Invalid attachment: %@.",
self.logTag,
__PRETTY_FUNCTION__,
attachment ? [attachment errorName] : @"Missing data");
[self showErrorAlertForAttachment:attachment];
} else {
[self tryToSendAttachmentIfApproved:attachment skipApprovalDialog:skipApprovalDialog];
}
}];
});
}];
}
#pragma mark Storage access
- (YapDatabaseConnection *)uiDatabaseConnection
{
NSAssert([NSThread isMainThread], @"Must access uiDatabaseConnection on main thread!");
if (!_uiDatabaseConnection) {
_uiDatabaseConnection = [self.primaryStorage newDatabaseConnection];
// Increase object cache limit. Default is 250.
_uiDatabaseConnection.objectCacheLimit = 500;
[_uiDatabaseConnection beginLongLivedReadTransaction];
}
return _uiDatabaseConnection;
}
- (YapDatabaseConnection *)editingDatabaseConnection
{
if (!_editingDatabaseConnection) {
_editingDatabaseConnection = [self.primaryStorage newDatabaseConnection];
}
return _editingDatabaseConnection;
}
- (void)yapDatabaseModifiedExternally:(NSNotification *)notification
{
OWSAssertIsOnMainThread();
DDLogVerbose(@"%@ %s", self.logTag, __PRETTY_FUNCTION__);
if (self.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)yapDatabaseModified:(NSNotification *)notification
{
OWSAssertIsOnMainThread();
// Currently, we update thread and message state every time
// the database is modified. That doesn't seem optimal, but
// in practice it's efficient enough.
if (!self.shouldObserveDBModifications) {
return;
}
DDLogVerbose(@"%@ %s", self.logTag, __PRETTY_FUNCTION__);
// HACK to work around radar #28167779
// "UICollectionView performBatchUpdates can trigger a crash if the collection view is flagged for layout"
// more: https://github.com/PSPDFKit-labs/radar.apple.com/tree/master/28167779%20-%20CollectionViewBatchingIssue
// This was our #2 crash, and much exacerbated by the refactoring somewhere between 2.6.2.0-2.6.3.8
//
// NOTE: It's critical we do this before beginLongLivedReadTransaction.
// We want to relayout our contents using the old message mappings and
// view items before they are updated.
[self.collectionView layoutIfNeeded];
// ENDHACK to work around radar #28167779
// We need to `beginLongLivedReadTransaction` before we update our
// models in order to jump to the most recent commit.
NSArray *notifications = [self.uiDatabaseConnection beginLongLivedReadTransaction];
[self updateBackButtonUnreadCount];
[self updateNavigationBarSubtitleLabel];
if (self.isGroupConversation) {
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
TSGroupThread *gThread = (TSGroupThread *)self.thread;
if (gThread.groupModel) {
TSGroupThread *_Nullable updatedThread =
[TSGroupThread threadWithGroupId:gThread.groupModel.groupId transaction:transaction];
if (updatedThread) {
self.thread = updatedThread;
} else {
OWSFail(@"%@ Could not reload thread.", self.logTag);
}
}
}];
[self setNavigationTitle];
}
[self updateDisappearingMessagesConfiguration];
if (![[self.uiDatabaseConnection ext:TSMessageDatabaseViewExtensionName] hasChangesForGroup:self.thread.uniqueId
inNotifications:notifications]) {
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
[self.messageMappings updateWithTransaction:transaction];
}];
return;
}
NSArray<YapDatabaseViewSectionChange *> *sectionChanges = nil;
NSArray<YapDatabaseViewRowChange *> *rowChanges = nil;
[[self.uiDatabaseConnection ext:TSMessageDatabaseViewExtensionName] getSectionChanges:&sectionChanges
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];
// Calling resetContentAndLayout is a bit expensive.
// Since by definition this won't affect any cells in the previous
// range, it should be sufficient to call invalidateLayout.
//
// TODO: Investigate whether we can just call invalidateLayout.
[self resetContentAndLayout];
return;
}
// We need to reload any modified interactions _before_ we call
// reloadViewItems.
BOOL hasDeletions = NO;
BOOL hasMalformedRowChange = NO;
for (YapDatabaseViewRowChange *rowChange in rowChanges) {
switch (rowChange.type) {
case YapDatabaseViewChangeUpdate: {
YapCollectionKey *collectionKey = rowChange.collectionKey;
if (collectionKey.key) {
ConversationViewItem *viewItem = self.viewItemCache[collectionKey.key];
[self reloadInteractionForViewItem:viewItem];
} 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;
}
hasDeletions = 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.
DDLogError(@"%@ hasMalformedRowChange", self.logTag);
[self.collectionView reloadData];
[self updateLastVisibleTimestamp];
[self cleanUpUnreadIndicatorIfNecessary];
return;
}
NSUInteger oldViewItemCount = self.viewItems.count;
NSMutableSet<NSNumber *> *rowsThatChangedSize = [[self reloadViewItems] mutableCopy];
BOOL wasAtBottom = [self isScrolledToBottom];
// We want sending messages to feel snappy. So, if the only
// update is a new outgoing message AND we're already scrolled to
// the bottom of the conversation, skip the scroll animation.
__block BOOL shouldAnimateScrollToBottom = !wasAtBottom;
// We want to scroll to the bottom if the user:
//
// a) already was at the bottom of the conversation.
// b) is inserting new interactions.
__block BOOL scrollToBottom = wasAtBottom;
void (^batchUpdates)(void) = ^{
for (YapDatabaseViewRowChange *rowChange in rowChanges) {
switch (rowChange.type) {
case YapDatabaseViewChangeDelete: {
DDLogVerbose(@"YapDatabaseViewChangeDelete: %@, %@, %zd",
rowChange.collectionKey,
rowChange.indexPath,
rowChange.finalIndex);
[self.collectionView deleteItemsAtIndexPaths:@[ rowChange.indexPath ]];
YapCollectionKey *collectionKey = rowChange.collectionKey;
OWSAssert(collectionKey.key.length > 0);
break;
}
case YapDatabaseViewChangeInsert: {
DDLogVerbose(@"YapDatabaseViewChangeInsert: %@, %@, %zd",
rowChange.collectionKey,
rowChange.newIndexPath,
rowChange.finalIndex);
[self.collectionView insertItemsAtIndexPaths:@[ rowChange.newIndexPath ]];
// We don't want to reload a row that we just inserted.
[rowsThatChangedSize removeObject:@(rowChange.originalIndex)];
ConversationViewItem *_Nullable viewItem = [self viewItemForIndex:(NSInteger)rowChange.finalIndex];
if ([viewItem.interaction isKindOfClass:[TSOutgoingMessage class]]) {
TSOutgoingMessage *outgoingMessage = (TSOutgoingMessage *)viewItem.interaction;
if (!outgoingMessage.isFromLinkedDevice) {
scrollToBottom = YES;
shouldAnimateScrollToBottom = NO;
}
}
break;
}
case YapDatabaseViewChangeMove: {
DDLogVerbose(@"YapDatabaseViewChangeMove: %@, %@, %@, %zd",
rowChange.collectionKey,
rowChange.indexPath,
rowChange.newIndexPath,
rowChange.finalIndex);
[self.collectionView moveItemAtIndexPath:rowChange.indexPath toIndexPath:rowChange.newIndexPath];
// We don't want to reload a row that we just moved.
[rowsThatChangedSize removeObject:@(rowChange.originalIndex)];
break;
}
case YapDatabaseViewChangeUpdate: {
DDLogVerbose(@"YapDatabaseViewChangeUpdate: %@, %@, %zd",
rowChange.collectionKey,
rowChange.indexPath,
rowChange.finalIndex);
[self.collectionView reloadItemsAtIndexPaths:@[ rowChange.indexPath ]];
// We don't want to reload a row that we've already reloaded.
[rowsThatChangedSize removeObject:@(rowChange.originalIndex)];
break;
}
}
}
// The changes performed above may affect the size of neighboring cells,
// as they may affect which cells show "date" headers or "status" footers.
NSMutableArray<NSIndexPath *> *rowsToReload = [NSMutableArray new];
for (NSNumber *row in rowsThatChangedSize) {
DDLogVerbose(@"rowsToReload: %@", row);
[rowsToReload addObject:[NSIndexPath indexPathForRow:row.integerValue inSection:0]];
}
if (rowsToReload.count > 0) {
[self.collectionView reloadItemsAtIndexPaths:rowsToReload];
}
};
DDLogVerbose(@"self.viewItems.count: %zd -> %zd", oldViewItemCount, self.viewItems.count);
BOOL shouldAnimateUpdates = [self shouldAnimateRowUpdates:rowChanges oldViewItemCount:oldViewItemCount];
void (^batchUpdatesCompletion)(BOOL) = ^(BOOL finished) {
OWSAssertIsOnMainThread();
if (!finished) {
DDLogInfo(@"%@ performBatchUpdates did not finish", self.logTag);
}
[self updateLastVisibleTimestamp];
if (scrollToBottom) {
[self scrollToBottomAnimated:shouldAnimateScrollToBottom && shouldAnimateUpdates];
}
if (hasDeletions) {
[self cleanUpUnreadIndicatorIfNecessary];
}
};
if (shouldAnimateUpdates) {
[self.collectionView performBatchUpdates:batchUpdates completion:batchUpdatesCompletion];
} else {
[UIView performWithoutAnimation:^{
[self.collectionView performBatchUpdates:batchUpdates completion:batchUpdatesCompletion];
}];
}
}
- (BOOL)shouldAnimateRowUpdates:(NSArray<YapDatabaseViewRowChange *> *)rowChanges
oldViewItemCount:(NSUInteger)oldViewItemCount
{
OWSAssert(rowChanges);
// If user sends a new outgoing message, don't animate the change.
BOOL isOnlyInsertingNewOutgoingMessages = YES;
BOOL isOnlyUpdatingLastOutgoingMessage = YES;
NSNumber *_Nullable lastUpdateRow = nil;
NSNumber *_Nullable lastNonUpdateRow = nil;
for (YapDatabaseViewRowChange *rowChange in rowChanges) {
switch (rowChange.type) {
case YapDatabaseViewChangeDelete:
isOnlyInsertingNewOutgoingMessages = NO;
isOnlyUpdatingLastOutgoingMessage = NO;
if (!lastNonUpdateRow || lastNonUpdateRow.integerValue < rowChange.indexPath.row) {
lastNonUpdateRow = @(rowChange.indexPath.row);
}
break;
case YapDatabaseViewChangeInsert: {
isOnlyUpdatingLastOutgoingMessage = NO;
ConversationViewItem *_Nullable viewItem = [self viewItemForIndex:(NSInteger)rowChange.finalIndex];
if ([viewItem.interaction isKindOfClass:[TSOutgoingMessage class]]
&& rowChange.finalIndex >= oldViewItemCount) {
continue;
}
if (!lastNonUpdateRow || lastNonUpdateRow.unsignedIntegerValue < rowChange.finalIndex) {
lastNonUpdateRow = @(rowChange.finalIndex);
}
}
case YapDatabaseViewChangeMove:
isOnlyInsertingNewOutgoingMessages = NO;
isOnlyUpdatingLastOutgoingMessage = NO;
if (!lastNonUpdateRow || lastNonUpdateRow.integerValue < rowChange.indexPath.row) {
lastNonUpdateRow = @(rowChange.indexPath.row);
}
if (!lastNonUpdateRow || lastNonUpdateRow.unsignedIntegerValue < rowChange.finalIndex) {
lastNonUpdateRow = @(rowChange.finalIndex);
}
break;
case YapDatabaseViewChangeUpdate: {
isOnlyInsertingNewOutgoingMessages = NO;
ConversationViewItem *_Nullable viewItem = [self viewItemForIndex:(NSInteger)rowChange.finalIndex];
if (![viewItem.interaction isKindOfClass:[TSOutgoingMessage class]]
|| rowChange.indexPath.row != (NSInteger)(oldViewItemCount - 1)) {
isOnlyUpdatingLastOutgoingMessage = NO;
}
if (!lastUpdateRow || lastUpdateRow.integerValue < rowChange.indexPath.row) {
lastUpdateRow = @(rowChange.indexPath.row);
}
break;
}
}
}
BOOL shouldAnimateRowUpdates = !(isOnlyInsertingNewOutgoingMessages || isOnlyUpdatingLastOutgoingMessage);
return shouldAnimateRowUpdates;
}
- (BOOL)isScrolledToBottom
{
CGFloat contentHeight = self.safeContentHeight;
// This is a bit subtle.
//
// The _wrong_ way to determine if we're scrolled to the bottom is to
// measure whether the collection view's content is "near" the bottom edge
// of the collection view. This is wrong because the collection view
// might not have enough content to fill the collection view's bounds
// _under certain conditions_ (e.g. with the keyboard dismissed).
//
// What we're really interested in is something a bit more subtle:
// "Is the scroll view scrolled down as far as it can, "at rest".
//
// To determine that, we find the appropriate "content offset y" if
// the scroll view were scrolled down as far as possible. IFF the
// actual "content offset y" is "near" that value, we return YES.
const CGFloat kIsAtBottomTolerancePts = 5;
// Note the usage of MAX() to handle the case where there isn't enough
// content to fill the collection view at its current size.
CGFloat contentOffsetYBottom
= MAX(0.f, contentHeight + self.collectionView.contentInset.bottom - self.collectionView.bounds.size.height);
CGFloat distanceFromBottom = contentOffsetYBottom - self.collectionView.contentOffset.y;
BOOL isScrolledToBottom = distanceFromBottom <= kIsAtBottomTolerancePts;
return isScrolledToBottom;
}
#pragma mark - Audio
- (void)requestRecordingVoiceMemo
{
OWSAssertIsOnMainThread();
NSUUID *voiceMessageUUID = [NSUUID UUID];
self.voiceMessageUUID = voiceMessageUUID;
__weak typeof(self) weakSelf = self;
[self ows_askForMicrophonePermissions:^(BOOL granted) {
__strong typeof(self) strongSelf = weakSelf;
if (!strongSelf) {
return;
}
if (strongSelf.voiceMessageUUID != voiceMessageUUID) {
// This voice message recording has been cancelled
// before recording could begin.
return;
}
if (granted) {
[strongSelf startRecordingVoiceMemo];
} else {
DDLogInfo(@"%@ we do not have recording permission.", self.logTag);
[strongSelf cancelVoiceMemo];
[OWSAlerts showNoMicrophonePermissionAlert];
}
}];
}
- (void)startRecordingVoiceMemo
{
OWSAssertIsOnMainThread();
DDLogInfo(@"startRecordingVoiceMemo");
// Cancel any ongoing audio playback.
[self.audioAttachmentPlayer stop];
self.audioAttachmentPlayer = nil;
NSString *temporaryDirectory = NSTemporaryDirectory();
NSString *filename = [NSString stringWithFormat:@"%lld.m4a", [NSDate ows_millisecondTimeStamp]];
NSString *filepath = [temporaryDirectory stringByAppendingPathComponent:filename];
NSURL *fileURL = [NSURL fileURLWithPath:filepath];
// Setup audio session
BOOL configuredAudio = [OWSAudioSession.shared startRecordingAudioActivity:self.voiceNoteAudioActivity];
if (!configuredAudio) {
OWSFail(@"%@ Couldn't configure audio session", self.logTag);
[self cancelVoiceMemo];
return;
}
NSError *error;
// Initiate and prepare the recorder
self.audioRecorder = [[AVAudioRecorder alloc] initWithURL:fileURL
settings:@{
AVFormatIDKey : @(kAudioFormatMPEG4AAC),
AVSampleRateKey : @(44100),
AVNumberOfChannelsKey : @(2),
AVEncoderBitRateKey : @(128 * 1024),
}
error:&error];
if (error) {
OWSFail(@"%@ Couldn't create audioRecorder: %@", self.logTag, error);
[self cancelVoiceMemo];
return;
}
self.audioRecorder.meteringEnabled = YES;
if (![self.audioRecorder prepareToRecord]) {
OWSFail(@"%@ audioRecorder couldn't prepareToRecord.", self.logTag);
[self cancelVoiceMemo];
return;
}
if (![self.audioRecorder record]) {
OWSFail(@"%@ audioRecorder couldn't record.", self.logTag);
[self cancelVoiceMemo];
return;
}
}
- (void)endRecordingVoiceMemo
{
OWSAssertIsOnMainThread();
DDLogInfo(@"endRecordingVoiceMemo");
self.voiceMessageUUID = nil;
if (!self.audioRecorder) {
// No voice message recording is in progress.
// We may be cancelling before the recording could begin.
DDLogError(@"%@ Missing audioRecorder", self.logTag);
return;
}
NSTimeInterval durationSeconds = self.audioRecorder.currentTime;
[self stopRecording];
const NSTimeInterval kMinimumRecordingTimeSeconds = 1.f;
if (durationSeconds < kMinimumRecordingTimeSeconds) {
DDLogInfo(@"Discarding voice message; too short.");
self.audioRecorder = nil;
[self dismissKeyBoard];
[OWSAlerts
showAlertWithTitle:
NSLocalizedString(@"VOICE_MESSAGE_TOO_SHORT_ALERT_TITLE",
@"Title for the alert indicating the 'voice message' needs to be held to be held down to record.")
message:NSLocalizedString(@"VOICE_MESSAGE_TOO_SHORT_ALERT_MESSAGE",
@"Message for the alert indicating the 'voice message' needs to be held to be held "
@"down to record.")];
return;
}
DataSource *_Nullable dataSource = [DataSourcePath dataSourceWithURL:self.audioRecorder.url];
self.audioRecorder = nil;
if (!dataSource) {
OWSFail(@"%@ Couldn't load audioRecorder data", self.logTag);
self.audioRecorder = nil;
return;
}
NSString *filename = [NSLocalizedString(@"VOICE_MESSAGE_FILE_NAME", @"Filename for voice messages.")
stringByAppendingPathExtension:@"m4a"];
[dataSource setSourceFilename:filename];
// Remove temporary file when complete.
[dataSource setShouldDeleteOnDeallocation];
SignalAttachment *attachment =
[SignalAttachment voiceMessageAttachmentWithDataSource:dataSource dataUTI:(NSString *)kUTTypeMPEG4Audio];
DDLogVerbose(@"%@ voice memo duration: %f, file size: %zd", self.logTag, durationSeconds, [dataSource dataLength]);
if (!attachment || [attachment hasError]) {
DDLogWarn(@"%@ %s Invalid attachment: %@.",
self.logTag,
__PRETTY_FUNCTION__,
attachment ? [attachment errorName] : @"Missing data");
[self showErrorAlertForAttachment:attachment];
} else {
[self tryToSendAttachmentIfApproved:attachment skipApprovalDialog:YES];
}
}
- (void)stopRecording
{
[self.audioRecorder stop];
[OWSAudioSession.shared endAudioActivity:self.voiceNoteAudioActivity];
}
- (void)cancelRecordingVoiceMemo
{
OWSAssertIsOnMainThread();
DDLogDebug(@"cancelRecordingVoiceMemo");
[self stopRecording];
self.audioRecorder = nil;
self.voiceMessageUUID = nil;
}
- (void)setAudioRecorder:(nullable AVAudioRecorder *)audioRecorder
{
// Prevent device from sleeping while recording a voice message.
if (audioRecorder) {
[DeviceSleepManager.sharedInstance addBlockWithBlockObject:audioRecorder];
} else if (_audioRecorder) {
[DeviceSleepManager.sharedInstance removeBlockWithBlockObject:_audioRecorder];
}
_audioRecorder = audioRecorder;
}
#pragma mark Accessory View
- (void)attachmentButtonPressed
{
[self dismissKeyBoard];
__weak ConversationViewController *weakSelf = self;
if ([self isBlockedContactConversation]) {
[self showUnblockContactUI:^(BOOL isBlocked) {
if (!isBlocked) {
[weakSelf attachmentButtonPressed];
}
}];
return;
}
BOOL didShowSNAlert =
[self showSafetyNumberConfirmationIfNecessaryWithConfirmationText:
NSLocalizedString(@"CONFIRMATION_TITLE", @"Generic button text to proceed with an action")
completion:^(BOOL didConfirmIdentity) {
if (didConfirmIdentity) {
[weakSelf attachmentButtonPressed];
}
}];
if (didShowSNAlert) {
return;
}
UIAlertController *actionSheetController =
[UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet];
[actionSheetController addAction:[OWSAlerts cancelAction]];
UIAlertAction *takeMediaAction = [UIAlertAction
actionWithTitle:NSLocalizedString(@"MEDIA_FROM_CAMERA_BUTTON", @"media picker option to take photo or video")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
[self takePictureOrVideo];
}];
UIImage *takeMediaImage = [UIImage imageNamed:@"actionsheet_camera_black"];
OWSAssert(takeMediaImage);
[takeMediaAction setValue:takeMediaImage forKey:@"image"];
[actionSheetController addAction:takeMediaAction];
UIAlertAction *chooseMediaAction = [UIAlertAction
actionWithTitle:NSLocalizedString(@"MEDIA_FROM_LIBRARY_BUTTON", @"media picker option to choose from library")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
[self chooseFromLibraryAsMedia];
}];
UIImage *chooseMediaImage = [UIImage imageNamed:@"actionsheet_camera_roll_black"];
OWSAssert(chooseMediaImage);
[chooseMediaAction setValue:chooseMediaImage forKey:@"image"];
[actionSheetController addAction:chooseMediaAction];
UIAlertAction *chooseDocumentAction =
[UIAlertAction actionWithTitle:NSLocalizedString(@"MEDIA_FROM_DOCUMENT_PICKER_BUTTON",
@"action sheet button title when choosing attachment type")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
[self showAttachmentDocumentPickerMenu];
}];
UIImage *chooseDocumentImage = [UIImage imageNamed:@"actionsheet_document_black"];
OWSAssert(chooseDocumentImage);
[chooseDocumentAction setValue:chooseDocumentImage forKey:@"image"];
[actionSheetController addAction:chooseDocumentAction];
UIAlertAction *gifAction = [UIAlertAction
actionWithTitle:NSLocalizedString(@"SELECT_GIF_BUTTON", @"Label for 'select GIF to attach' action sheet button")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *_Nonnull action) {
[self showGifPicker];
}];
UIImage *gifImage = [UIImage imageNamed:@"actionsheet_gif_black"];
OWSAssert(gifImage);
[gifAction setValue:gifImage forKey:@"image"];
[actionSheetController addAction:gifAction];
[self dismissKeyBoard];
[self presentViewController:actionSheetController animated:true completion:nil];
}
- (nullable NSIndexPath *)lastVisibleIndexPath
{
NSIndexPath *_Nullable lastVisibleIndexPath = nil;
for (NSIndexPath *indexPath in [self.collectionView indexPathsForVisibleItems]) {
if (!lastVisibleIndexPath || indexPath.row > lastVisibleIndexPath.row) {
lastVisibleIndexPath = indexPath;
}
}
if (lastVisibleIndexPath && lastVisibleIndexPath.row >= self.viewItems.count) {
return (self.viewItems.count > 0 ? [NSIndexPath indexPathForRow:self.viewItems.count - 1 inSection:0] : nil);
}
return lastVisibleIndexPath;
}
- (nullable ConversationViewItem *)lastVisibleViewItem
{
NSIndexPath *_Nullable lastVisibleIndexPath = [self lastVisibleIndexPath];
if (!lastVisibleIndexPath) {
return nil;
}
return [self viewItemForIndex:lastVisibleIndexPath.row];
}
// In the case where we explicitly scroll to bottom, we want to synchronously
// update the UI to reflect that, since the "mark as read" logic is asynchronous
// and won't update the UI state immediately.
- (void)didScrollToBottom
{
ConversationViewItem *_Nullable lastVisibleViewItem = [self.viewItems lastObject];
if (lastVisibleViewItem) {
uint64_t lastVisibleTimestamp = lastVisibleViewItem.interaction.timestampForSorting;
self.lastVisibleTimestamp = MAX(self.lastVisibleTimestamp, lastVisibleTimestamp);
}
self.scrollDownButton.hidden = YES;
self.hasUnreadMessages = NO;
}
- (void)updateLastVisibleTimestamp
{
ConversationViewItem *_Nullable lastVisibleViewItem = [self lastVisibleViewItem];
if (lastVisibleViewItem) {
uint64_t lastVisibleTimestamp = lastVisibleViewItem.interaction.timestampForSorting;
self.lastVisibleTimestamp = MAX(self.lastVisibleTimestamp, lastVisibleTimestamp);
}
[self ensureScrollDownButton];
__block NSUInteger numberOfUnreadMessages;
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
numberOfUnreadMessages =
[[transaction ext:TSUnreadDatabaseViewExtensionName] numberOfItemsInGroup:self.thread.uniqueId];
}];
self.hasUnreadMessages = numberOfUnreadMessages > 0;
}
- (void)cleanUpUnreadIndicatorIfNecessary
{
BOOL hasUnreadIndicator = self.dynamicInteractions.unreadIndicatorPosition != nil;
if (!hasUnreadIndicator) {
return;
}
__block BOOL hasUnseenInteractions = NO;
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
hasUnseenInteractions =
[[transaction ext:TSUnreadDatabaseViewExtensionName] numberOfItemsInGroup:self.thread.uniqueId] > 0;
}];
if (hasUnseenInteractions) {
return;
}
// If the last unread message was deleted (manually or due to disappearing messages)
// we may need to clean up an obsolete unread indicator.
[self ensureDynamicInteractions];
}
- (void)updateLastVisibleTimestamp:(uint64_t)timestamp
{
OWSAssert(timestamp > 0);
self.lastVisibleTimestamp = MAX(self.lastVisibleTimestamp, timestamp);
[self ensureScrollDownButton];
}
- (void)markVisibleMessagesAsRead
{
[self updateLastVisibleTimestamp];
uint64_t lastVisibleTimestamp = self.lastVisibleTimestamp;
if (lastVisibleTimestamp == 0) {
// No visible messages yet. New Thread.
return;
}
[OWSReadReceiptManager.sharedManager markAsReadLocallyBeforeTimestamp:lastVisibleTimestamp thread:self.thread];
}
- (void)updateGroupModelTo:(TSGroupModel *)newGroupModel successCompletion:(void (^_Nullable)(void))successCompletion
{
__block TSGroupThread *groupThread;
__block TSOutgoingMessage *message;
[self.editingDatabaseConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
groupThread = [TSGroupThread getOrCreateThreadWithGroupModel:newGroupModel transaction:transaction];
NSString *updateGroupInfo =
[groupThread.groupModel getInfoStringAboutUpdateTo:newGroupModel contactsManager:self.contactsManager];
groupThread.groupModel = newGroupModel;
[groupThread saveWithTransaction:transaction];
message = [TSOutgoingMessage outgoingMessageInThread:groupThread groupMetaMessage:TSGroupMessageUpdate];
[message updateWithCustomMessage:updateGroupInfo transaction:transaction];
}];
if (newGroupModel.groupImage) {
NSData *data = UIImagePNGRepresentation(newGroupModel.groupImage);
DataSource *_Nullable dataSource = [DataSourceValue dataSourceWithData:data fileExtension:@"png"];
[self.messageSender enqueueAttachment:dataSource
contentType:OWSMimeTypeImagePng
sourceFilename:nil
inMessage:message
success:^{
DDLogDebug(@"%@ Successfully sent group update with avatar", self.logTag);
if (successCompletion) {
successCompletion();
}
}
failure:^(NSError *_Nonnull error) {
DDLogError(@"%@ Failed to send group avatar update with error: %@", self.logTag, error);
}];
} else {
[self.messageSender enqueueMessage:message
success:^{
DDLogDebug(@"%@ Successfully sent group update", self.logTag);
if (successCompletion) {
successCompletion();
}
}
failure:^(NSError *_Nonnull error) {
DDLogError(@"%@ Failed to send group update with error: %@", self.logTag, error);
}];
}
self.thread = groupThread;
}
- (void)popKeyBoard
{
[self.inputToolbar beginEditingTextMessage];
}
- (void)dismissKeyBoard
{
[self.inputToolbar endEditingTextMessage];
}
#pragma mark Drafts
- (void)loadDraftInCompose
{
OWSAssertIsOnMainThread();
__block NSString *draft;
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
draft = [_thread currentDraftWithTransaction:transaction];
}];
[self.inputToolbar setMessageText:draft];
}
- (void)saveDraft
{
if (self.inputToolbar.hidden == NO) {
__block TSThread *thread = _thread;
__block NSString *currentDraft = [self.inputToolbar messageText];
[self.editingDatabaseConnection asyncReadWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
[thread setDraft:currentDraft transaction:transaction];
}];
}
}
- (void)clearDraft
{
__block TSThread *thread = _thread;
[self.editingDatabaseConnection asyncReadWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
[thread setDraft:@"" transaction:transaction];
}];
}
#pragma mark Unread Badge
- (void)updateBackButtonUnreadCount
{
OWSAssertIsOnMainThread();
self.backButtonUnreadCount = [OWSMessageUtils.sharedManager unreadMessagesCountExcept:self.thread];
}
- (void)setBackButtonUnreadCount:(NSUInteger)unreadCount
{
OWSAssertIsOnMainThread();
if (_backButtonUnreadCount == unreadCount) {
// No need to re-render same count.
return;
}
_backButtonUnreadCount = unreadCount;
OWSAssert(_backButtonUnreadCountView != nil);
_backButtonUnreadCountView.hidden = unreadCount <= 0;
OWSAssert(_backButtonUnreadCountLabel != nil);
// Max out the unread count at 99+.
const NSUInteger kMaxUnreadCount = 99;
_backButtonUnreadCountLabel.text = [OWSFormat formatInt:(int)MIN(kMaxUnreadCount, unreadCount)];
}
#pragma mark 3D Touch Preview Actions
- (NSArray<id<UIPreviewActionItem>> *)previewActionItems
{
return @[];
}
#pragma mark - Event Handling
- (void)navigationTitleTapped:(UIGestureRecognizer *)gestureRecognizer
{
if (gestureRecognizer.state == UIGestureRecognizerStateRecognized) {
[self showConversationSettings];
}
}
#ifdef USE_DEBUG_UI
- (void)navigationTitleLongPressed:(UIGestureRecognizer *)gestureRecognizer
{
if (gestureRecognizer.state == UIGestureRecognizerStateBegan) {
[DebugUITableViewController presentDebugUIForThread:self.thread fromViewController:self];
}
}
#endif
#pragma mark - ConversationInputTextViewDelegate
- (void)inputTextViewSendMessagePressed
{
[self sendButtonPressed];
}
- (void)didPasteAttachment:(SignalAttachment *_Nullable)attachment
{
DDLogError(@"%@ %s", self.logTag, __PRETTY_FUNCTION__);
[self tryToSendAttachmentIfApproved:attachment];
}
- (void)tryToSendAttachmentIfApproved:(SignalAttachment *_Nullable)attachment
{
[self tryToSendAttachmentIfApproved:attachment skipApprovalDialog:NO];
}
- (void)tryToSendAttachmentIfApproved:(SignalAttachment *_Nullable)attachment
skipApprovalDialog:(BOOL)skipApprovalDialog
{
DDLogError(@"%@ %s", self.logTag, __PRETTY_FUNCTION__);
DispatchMainThreadSafe(^{
__weak ConversationViewController *weakSelf = self;
if ([self isBlockedContactConversation]) {
[self showUnblockContactUI:^(BOOL isBlocked) {
if (!isBlocked) {
[weakSelf tryToSendAttachmentIfApproved:attachment];
}
}];
return;
}
BOOL didShowSNAlert = [self
showSafetyNumberConfirmationIfNecessaryWithConfirmationText:[SafetyNumberStrings confirmSendButton]
completion:^(BOOL didConfirmIdentity) {
if (didConfirmIdentity) {
[weakSelf
tryToSendAttachmentIfApproved:attachment];
}
}];
if (didShowSNAlert) {
return;
}
if (attachment == nil || [attachment hasError]) {
DDLogWarn(@"%@ %s Invalid attachment: %@.",
self.logTag,
__PRETTY_FUNCTION__,
attachment ? [attachment errorName] : @"Missing data");
[self showErrorAlertForAttachment:attachment];
} else if (skipApprovalDialog) {
[self sendMessageAttachment:attachment];
} else {
AttachmentApprovalViewController *approvalVC = [[AttachmentApprovalViewController alloc] initWithAttachment:attachment delegate:self];
[self presentViewController:approvalVC animated:YES completion:nil];
}
});
}
- (void)keyboardWillChangeFrame:(NSNotification *)notification
{
// `willChange` is the correct keyboard notifiation to observe when adjusting contentInset
// in lockstep with the keyboard presentation animation. `didChange` results in the contentInset
// not adjusting until after the keyboard is fully up.
DDLogVerbose(@"%@ %s", self.logTag, __PRETTY_FUNCTION__);
[self handleKeyboardNotification:notification];
}
- (void)handleKeyboardNotification:(NSNotification *)notification
{
AssertIsOnMainThread();
NSDictionary *userInfo = [notification userInfo];
NSValue *_Nullable keyboardBeginFrameValue = userInfo[UIKeyboardFrameBeginUserInfoKey];
if (!keyboardBeginFrameValue) {
OWSFail(@"%@ Missing keyboard begin frame", self.logTag);
return;
}
NSValue *_Nullable keyboardEndFrameValue = userInfo[UIKeyboardFrameEndUserInfoKey];
if (!keyboardEndFrameValue) {
OWSFail(@"%@ Missing keyboard end frame", self.logTag);
return;
}
CGRect keyboardEndFrame = [keyboardEndFrameValue CGRectValue];
UIEdgeInsets oldInsets = self.collectionView.contentInset;
UIEdgeInsets newInsets = oldInsets;
// bottomLayoutGuide accounts for extra offset needed on iPhoneX
newInsets.bottom = keyboardEndFrame.size.height - self.bottomLayoutGuide.length;
BOOL wasScrolledToBottom = [self isScrolledToBottom];
void (^adjustInsets)(void) = ^(void) {
self.collectionView.contentInset = newInsets;
self.collectionView.scrollIndicatorInsets = newInsets;
// Note there is a bug in iOS11.2 which where switching to the emoji keyboard
// does not fire a UIKeyboardFrameWillChange notification. In that case, the scroll
// down button gets mostly obscured by the keyboard.
// RADAR: #36297652
self.scrollDownButtonButtomConstraint.constant = -1 * newInsets.bottom;
[self.scrollDownButton setNeedsLayout];
[self.scrollDownButton layoutIfNeeded];
// HACK: I've made the assumption that we are already in the context of an animation, in which case the
// above should be sufficient to smoothly move the scrollDown button in step with the keyboard presentation
// animation. Yet, setting the constraint doesn't animate the movement of the button - it "jumps" to it's final
// position. So here we manually lay out the scroll down button frame (seemingly redundantly), which allows it
// to be smoothly animated.
CGRect newButtonFrame = self.scrollDownButton.frame;
newButtonFrame.origin.y
= self.scrollDownButton.superview.height - (newInsets.bottom + self.scrollDownButton.height);
self.scrollDownButton.frame = newButtonFrame;
// Adjust content offset to prevent the presented keyboard from obscuring content.
if (wasScrolledToBottom) {
// If we were scrolled to the bottom, don't do any fancy math. Just stay at the bottom.
[self scrollToBottomAnimated:NO];
} else {
// If we were scrolled away from the bottom, shift the content in lockstep with the
// keyboard, up to the limits of the content bounds.
CGFloat insetChange = newInsets.bottom - oldInsets.bottom;
CGFloat oldYOffset = self.collectionView.contentOffset.y;
CGFloat newYOffset = Clamp(oldYOffset + insetChange, 0, self.safeContentHeight);
CGPoint newOffset = CGPointMake(0, newYOffset);
// If the user is dismissing the keyboard via interactive scrolling, any additional conset offset feels
// redundant, so we only adjust content offset when *presenting* the keyboard (i.e. when insetChange > 0).
if (insetChange > 0 && newYOffset > keyboardEndFrame.origin.y) {
[self.collectionView setContentOffset:newOffset animated:NO];
}
}
};
if (self.isViewCompletelyAppeared) {
adjustInsets();
} else {
// Even though we are scrolling without explicitly animating, the notification seems to occur within the context
// of a system animation, which is desirable when the view is visible, because the user sees the content rise
// in sync with the keyboard. However, when the view hasn't yet been presented, the animation conflicts and the
// result is that initial load causes the collection cells to visably "animate" to their final position once the
// view appears.
[UIView performWithoutAnimation:adjustInsets];
}
}
- (void)attachmentApproval:(AttachmentApprovalViewController *)attachmentApproval didApproveAttachment:(SignalAttachment * _Nonnull)attachment
{
[self sendMessageAttachment:attachment];
[self dismissViewControllerAnimated:YES completion:nil];
// We always want to scroll to the bottom of the conversation after the local user
// sends a message. Normally, this is taken care of in yapDatabaseModified:, but
// we don't listen to db modifications when this view isn't visible, i.e. when the
// attachment approval view is presented.
[self scrollToBottomAnimated:YES];
}
- (void)attachmentApproval:(AttachmentApprovalViewController *)attachmentApproval didCancelAttachment:(SignalAttachment * _Nonnull)attachment
{
[self dismissViewControllerAnimated:YES completion:nil];
}
- (void)showErrorAlertForAttachment:(SignalAttachment *_Nullable)attachment
{
OWSAssert(attachment == nil || [attachment hasError]);
NSString *errorMessage
= (attachment ? [attachment localizedErrorDescription] : [SignalAttachment missingDataErrorMessage]);
DDLogError(@"%@ %s: %@", self.logTag, __PRETTY_FUNCTION__, errorMessage);
[OWSAlerts showAlertWithTitle:NSLocalizedString(
@"ATTACHMENT_ERROR_ALERT_TITLE", @"The title of the 'attachment error' alert.")
message:errorMessage];
}
- (CGFloat)safeContentHeight
{
// Don't use self.collectionView.contentSize.height as the collection view's
// content size might not be set yet.
//
// We can safely call prepareLayout to ensure the layout state is up-to-date
// since our layout uses a dirty flag internally to debounce redundant work.
[self.layout prepareLayout];
return [self.collectionView.collectionViewLayout collectionViewContentSize].height;
}
- (void)scrollToBottomAnimated:(BOOL)animated
{
OWSAssertIsOnMainThread();
if (self.isUserScrolling) {
return;
}
// Ensure the view is fully layed out before we try to scroll to the bottom, since
// we use the collectionView bounds to determine where the "bottom" is.
[self.view layoutIfNeeded];
CGFloat contentHeight = self.safeContentHeight;
CGFloat dstY
= MAX(0, contentHeight + self.collectionView.contentInset.bottom - self.collectionView.bounds.size.height);
[self.collectionView setContentOffset:CGPointMake(0, dstY) animated:NO];
[self didScrollToBottom];
}
#pragma mark - UIScrollViewDelegate
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
[self updateLastVisibleTimestamp];
[self autoLoadMoreIfNecessary];
}
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
self.userHasScrolled = YES;
self.isUserScrolling = YES;
}
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
{
self.isUserScrolling = NO;
}
#pragma mark - OWSConversationSettingsViewDelegate
- (void)resendGroupUpdateForErrorMessage:(TSErrorMessage *)message
{
OWSAssertIsOnMainThread();
OWSAssert([_thread isKindOfClass:[TSGroupThread class]]);
OWSAssert(message);
TSGroupThread *groupThread = (TSGroupThread *)self.thread;
TSGroupModel *groupModel = groupThread.groupModel;
[self updateGroupModelTo:groupModel
successCompletion:^{
DDLogInfo(@"Group updated, removing group creation error.");
[message remove];
}];
}
- (void)groupWasUpdated:(TSGroupModel *)groupModel
{
OWSAssert(groupModel);
NSMutableSet *groupMemberIds = [NSMutableSet setWithArray:groupModel.groupMemberIds];
[groupMemberIds addObject:[TSAccountManager localNumber]];
groupModel.groupMemberIds = [NSMutableArray arrayWithArray:[groupMemberIds allObjects]];
[self updateGroupModelTo:groupModel successCompletion:nil];
}
- (void)popAllConversationSettingsViews
{
if (self.presentedViewController) {
[self.presentedViewController
dismissViewControllerAnimated:YES
completion:^{
[self.navigationController popToViewController:self animated:YES];
}];
} else {
[self.navigationController popToViewController:self animated:YES];
}
}
#pragma mark - ConversationViewLayoutDelegate
- (NSArray<id<ConversationViewLayoutItem>> *)layoutItems
{
return self.viewItems;
}
- (CGFloat)layoutHeaderHeight
{
return (self.showLoadMoreHeader ? kLoadMoreHeaderHeight : 0.f);
}
#pragma mark - ConversationInputToolbarDelegate
- (void)sendButtonPressed
{
[self tryToSendTextMessage:self.inputToolbar.messageText updateKeyboardState:YES];
}
- (void)tryToSendTextMessage:(NSString *)text updateKeyboardState:(BOOL)updateKeyboardState
{
__weak ConversationViewController *weakSelf = self;
if ([self isBlockedContactConversation]) {
[self showUnblockContactUI:^(BOOL isBlocked) {
if (!isBlocked) {
[weakSelf tryToSendTextMessage:text updateKeyboardState:NO];
}
}];
return;
}
BOOL didShowSNAlert =
[self showSafetyNumberConfirmationIfNecessaryWithConfirmationText:[SafetyNumberStrings confirmSendButton]
completion:^(BOOL didConfirmIdentity) {
if (didConfirmIdentity) {
[weakSelf tryToSendTextMessage:text
updateKeyboardState:NO];
}
}];
if (didShowSNAlert) {
return;
}
text = [text ows_stripped];
if (text.length < 1) {
return;
}
// Limit outgoing text messages to 16kb.
//
// We convert large text messages to attachments
// which are presented as normal text messages.
BOOL didAddToProfileWhitelist = [ThreadUtil addThreadToProfileWhitelistIfEmptyContactThread:self.thread];
TSOutgoingMessage *message;
if ([text lengthOfBytesUsingEncoding:NSUTF8StringEncoding] >= kOversizeTextMessageSizeThreshold) {
DataSource *_Nullable dataSource = [DataSourceValue dataSourceWithOversizeText:text];
SignalAttachment *attachment =
[SignalAttachment attachmentWithDataSource:dataSource dataUTI:kOversizeTextAttachmentUTI];
message = [ThreadUtil sendMessageWithAttachment:attachment
inThread:self.thread
quotedMessage:self.inputToolbar.quotedMessage
messageSender:self.messageSender
completion:nil];
} else {
message = [ThreadUtil sendMessageWithText:text
inThread:self.thread
quotedMessage:self.inputToolbar.quotedMessage
messageSender:self.messageSender];
}
[self messageWasSent:message];
if (updateKeyboardState) {
[self.inputToolbar toggleDefaultKeyboard];
}
[self.inputToolbar clearTextMessage];
[self clearDraft];
if (didAddToProfileWhitelist) {
[self ensureDynamicInteractions];
}
}
- (void)voiceMemoGestureDidStart
{
OWSAssertIsOnMainThread();
DDLogInfo(@"voiceMemoGestureDidStart");
const CGFloat kIgnoreMessageSendDoubleTapDurationSeconds = 2.f;
if (self.lastMessageSentDate &&
[[NSDate new] timeIntervalSinceDate:self.lastMessageSentDate] < kIgnoreMessageSendDoubleTapDurationSeconds) {
// If users double-taps the message send button, the second tap can look like a
// very short voice message gesture. We want to ignore such gestures.
[self.inputToolbar cancelVoiceMemoIfNecessary];
[self.inputToolbar hideVoiceMemoUI:NO];
[self cancelRecordingVoiceMemo];
return;
}
[self.inputToolbar showVoiceMemoUI];
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
[self requestRecordingVoiceMemo];
}
- (void)voiceMemoGestureDidEnd
{
OWSAssertIsOnMainThread();
DDLogInfo(@"voiceMemoGestureDidEnd");
[self.inputToolbar hideVoiceMemoUI:YES];
[self endRecordingVoiceMemo];
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
}
- (void)voiceMemoGestureDidCancel
{
OWSAssertIsOnMainThread();
DDLogInfo(@"voiceMemoGestureDidCancel");
[self.inputToolbar hideVoiceMemoUI:NO];
[self cancelRecordingVoiceMemo];
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
}
- (void)voiceMemoGestureDidChange:(CGFloat)cancelAlpha
{
OWSAssertIsOnMainThread();
[self.inputToolbar setVoiceMemoUICancelAlpha:cancelAlpha];
}
- (void)cancelVoiceMemo
{
OWSAssertIsOnMainThread();
[self.inputToolbar cancelVoiceMemoIfNecessary];
[self.inputToolbar hideVoiceMemoUI:NO];
[self cancelRecordingVoiceMemo];
}
#pragma mark - Database Observation
- (void)setIsUserScrolling:(BOOL)isUserScrolling
{
_isUserScrolling = isUserScrolling;
[self autoLoadMoreIfNecessary];
}
- (void)setIsViewVisible:(BOOL)isViewVisible
{
_isViewVisible = isViewVisible;
[self updateShouldObserveDBModifications];
[self updateCellsVisible];
}
- (void)setIsAppInBackground:(BOOL)isAppInBackground
{
_isAppInBackground = isAppInBackground;
[self updateShouldObserveDBModifications];
[self updateCellsVisible];
}
- (void)updateCellsVisible
{
BOOL isCellVisible = self.isViewVisible && !self.isAppInBackground;
for (ConversationViewCell *cell in self.collectionView.visibleCells) {
cell.isCellVisible = isCellVisible;
}
}
- (void)updateShouldObserveDBModifications
{
self.shouldObserveDBModifications = self.isViewVisible && !self.isAppInBackground;
}
- (void)setShouldObserveDBModifications:(BOOL)shouldObserveDBModifications
{
if (_shouldObserveDBModifications == shouldObserveDBModifications) {
return;
}
_shouldObserveDBModifications = shouldObserveDBModifications;
if (self.shouldObserveDBModifications) {
DDLogVerbose(@"%@ resume observation of database modifications.", self.logTag);
// We need to call resetMappings when we _resume_ observing DB modifications,
// since we've been ignore DB modifications so the mappings can be wrong.
//
// resetMappings can however have the side effect of increasing the mapping's
// "window" size. If that happens, we need to restore the scroll state.
// Snapshot the scroll state by measuring the "distance from top of view to
// bottom of content"; if the mapping's "window" size grows, it will grow
// _upward_.
CGFloat viewTopToContentBottom = self.safeContentHeight - self.collectionView.contentOffset.y;
NSUInteger oldCellCount = [self.messageMappings numberOfItemsInGroup:self.thread.uniqueId];
// ViewItems modified while we were not observing may be stale.
//
// TODO: have a more fine-grained cache expiration based on rows modified.
[self.viewItemCache removeAllObjects];
// Snapshot the "previousLastTimestamp" value; it will be cleared by resetMappings.
NSNumber *_Nullable previousLastTimestamp = self.previousLastTimestamp;
[self resetMappings];
NSUInteger newCellCount = [self.messageMappings numberOfItemsInGroup:self.thread.uniqueId];
// Detect changes in the mapping's "window" size.
if (oldCellCount != newCellCount) {
CGFloat newContentHeight = self.safeContentHeight;
CGPoint newContentOffset = CGPointMake(0, MAX(0, newContentHeight - viewTopToContentBottom));
[self.collectionView setContentOffset:newContentOffset animated:NO];
}
// When we resume observing database changes, we want to scroll to show the user
// any new items inserted while we were not observing. We therefore find the
// first item at or after the "view horizon". See the comments below which explain
// the "view horizon".
ConversationViewItem *_Nullable lastViewItem = self.viewItems.lastObject;
BOOL hasAddedNewItems = (lastViewItem &&
previousLastTimestamp &&
lastViewItem.interaction.timestamp > previousLastTimestamp.unsignedLongLongValue);
DDLogInfo(@"%@ hasAddedNewItems: %d", self.logTag, hasAddedNewItems);
if (hasAddedNewItems) {
NSIndexPath *_Nullable indexPathToShow = [self firstIndexPathAtViewHorizonTimestamp];
if (indexPathToShow) {
// The goal is to show _both_ the last item before the "view horizon" and the
// first item after the "view horizon". We can't do "top on first item after"
// or "bottom on last item before" or we won't see the other. Unfortunately,
// this gets tricky if either is huge. The largest cells are oversize text,
// which should be rare. Other cells are considerably smaller than a screenful.
[self.collectionView scrollToItemAtIndexPath:indexPathToShow
atScrollPosition:UICollectionViewScrollPositionCenteredVertically
animated:NO];
}
}
self.viewHorizonTimestamp = nil;
DDLogVerbose(@"%@ resumed observation of database modifications.", self.logTag);
} else {
DDLogVerbose(@"%@ pausing observation of database modifications.", self.logTag);
// When stopping observation, try to record the timestamp of the "view horizon".
// The "view horizon" is where we'll want to focus the users when we resume
// observation if any changes have happened while we weren't observing.
// Ideally, we'll focus on those changes. But we can't skip over unread
// interactions, so we prioritize those, if any.
//
// We'll use this later to update the view to reflect any changes made while
// we were not observing the database. See extendRangeToIncludeUnobservedItems
// and the logic above.
ConversationViewItem *_Nullable lastViewItem = self.viewItems.lastObject;
if (lastViewItem) {
self.previousLastTimestamp = @(lastViewItem.interaction.timestamp);
} else {
self.previousLastTimestamp = nil;
}
__block TSInteraction *_Nullable firstUnseenInteraction = nil;
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
firstUnseenInteraction =
[[TSDatabaseView unseenDatabaseViewExtension:transaction] firstObjectInGroup:self.thread.uniqueId];
}];
if (firstUnseenInteraction) {
// If there are any unread interactions, focus on the first one.
self.viewHorizonTimestamp = @(firstUnseenInteraction.timestamp);
} else if (lastViewItem) {
// Otherwise, focus _just after_ the last interaction.
self.viewHorizonTimestamp = @(lastViewItem.interaction.timestamp + 1);
} else {
self.viewHorizonTimestamp = nil;
}
DDLogVerbose(@"%@ paused observation of database modifications.", self.logTag);
}
}
- (nullable NSIndexPath *)firstIndexPathAtViewHorizonTimestamp
{
OWSAssert(self.shouldObserveDBModifications);
if (!self.viewHorizonTimestamp) {
return nil;
}
if (self.viewItems.count < 1) {
return nil;
}
uint64_t viewHorizonTimestamp = self.viewHorizonTimestamp.unsignedLongLongValue;
// Binary search for the first view item whose timestamp >= the "view horizon" timestamp.
// We want to move "left" rightward, discarding interactions before this cutoff.
// We want to move "right" leftward, discarding all-but-the-first interaction after this cutoff.
// In the end, if we converge on an item _after_ this cutoff, it's the one we want.
// If we converge on an item _before_ this cutoff, there was no interaction that fit our criteria.
NSUInteger left = 0, right = self.viewItems.count - 1;
while (left != right) {
OWSAssert(left < right);
NSUInteger mid = (left + right) / 2;
OWSAssert(left <= mid);
OWSAssert(mid < right);
ConversationViewItem *viewItem = self.viewItems[mid];
if (viewItem.interaction.timestamp >= viewHorizonTimestamp) {
right = mid;
} else {
// This is an optimization; it also ensures that we converge.
left = mid + 1;
}
}
OWSAssert(left == right);
ConversationViewItem *viewItem = self.viewItems[left];
if (viewItem.interaction.timestamp >= viewHorizonTimestamp) {
DDLogInfo(@"%@ firstIndexPathAtViewHorizonTimestamp: %zd / %zd", self.logTag, left, self.viewItems.count);
return [NSIndexPath indexPathForRow:(NSInteger) left inSection:0];
} else {
DDLogInfo(@"%@ firstIndexPathAtViewHorizonTimestamp: none / %zd", self.logTag, self.viewItems.count);
return nil;
}
}
// We stop observing database modifications when the app or this view is not visible
// (see: shouldObserveDBModifications). When we resume observing db modifications,
// we want to extend the "range" of this view to include any items added to this
// thread while we were not observing.
- (void)extendRangeToIncludeUnobservedItems
{
if (!self.shouldObserveDBModifications) {
return;
}
if (!self.previousLastTimestamp) {
return;
}
uint64_t previousLastTimestamp = self.previousLastTimestamp.unsignedLongLongValue;
__block NSUInteger addedItemCount = 0;
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
[[transaction ext:TSMessageDatabaseViewExtensionName]
enumerateRowsInGroup:self.thread.uniqueId
withOptions:NSEnumerationReverse
usingBlock:^(NSString *collection,
NSString *key,
id object,
id metadata,
NSUInteger index,
BOOL *stop) {
if (![object isKindOfClass:[TSInteraction class]]) {
OWSFail(@"Expected a TSInteraction: %@", [object class]);
return;
}
TSInteraction *interaction = (TSInteraction *)object;
if (interaction.timestamp <= previousLastTimestamp) {
*stop = YES;
return;
}
addedItemCount++;
}];
}];
DDLogInfo(@"%@ extendRangeToIncludeUnobservedItems: %zd", self.logTag, addedItemCount);
self.lastRangeLength += addedItemCount;
// We only want to do this once, so clear the "previous last timestamp".
self.previousLastTimestamp = nil;
}
- (void)resetMappings
{
// If we're entering "active" mode (e.g. view is visible and app is in foreground),
// reset all state updated by yapDatabaseModified:.
if (self.messageMappings != nil) {
// Before we begin observing database modifications, make sure
// our mapping and table state is up-to-date.
//
// We need to `beginLongLivedReadTransaction` before we update our
// mapping in order to jump to the most recent commit.
[self.uiDatabaseConnection beginLongLivedReadTransaction];
[self extendRangeToIncludeUnobservedItems];
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
[self.messageMappings updateWithTransaction:transaction];
}];
[self updateMessageMappingRangeOptions];
}
[self reloadViewItems];
[self resetContentAndLayout];
[self ensureDynamicInteractions];
[self updateBackButtonUnreadCount];
[self updateNavigationBarSubtitleLabel];
// 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"];
}];
}
#pragma mark - ConversationCollectionViewDelegate
- (void)collectionViewWillChangeLayout
{
OWSAssertIsOnMainThread();
}
- (void)collectionViewDidChangeLayout
{
OWSAssertIsOnMainThread();
[self updateLastVisibleTimestamp];
}
#pragma mark - View Items
// This is a key method. It builds or rebuilds the list of
// cell view models.
//
// Returns a list of the rows which may have changed size and
// need to be reloaded if we're doing an incremental update
// of the view.
- (NSSet<NSNumber *> *)reloadViewItems
{
NSMutableArray<ConversationViewItem *> *viewItems = [NSMutableArray new];
NSMutableDictionary<NSString *, ConversationViewItem *> *viewItemCache = [NSMutableDictionary new];
NSUInteger count = [self.messageMappings numberOfItemsInSection:0];
BOOL isGroupThread = self.isGroupConversation;
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
YapDatabaseViewTransaction *viewTransaction = [transaction ext:TSMessageDatabaseViewExtensionName];
OWSAssert(viewTransaction);
for (NSUInteger row = 0; row < count; row++) {
TSInteraction *interaction =
[viewTransaction objectAtRow:row inSection:0 withMappings:self.messageMappings];
OWSAssert(interaction);
ConversationViewItem *_Nullable viewItem = self.viewItemCache[interaction.uniqueId];
if (viewItem) {
viewItem.previousRow = viewItem.row;
} else {
viewItem = [[ConversationViewItem alloc] initWithInteraction:interaction
isGroupThread:isGroupThread
transaction:transaction];
}
viewItem.row = (NSInteger)row;
[viewItems addObject:viewItem];
OWSAssert(!viewItemCache[interaction.uniqueId]);
viewItemCache[interaction.uniqueId] = viewItem;
}
}];
NSMutableSet<NSNumber *> *rowsThatChangedSize = [NSMutableSet new];
// Update the "shouldShowDate" property of the view items.
BOOL shouldShowDateOnNextViewItem = YES;
uint64_t previousViewItemTimestamp = 0;
for (ConversationViewItem *viewItem in viewItems) {
BOOL canShowDate = NO;
switch (viewItem.interaction.interactionType) {
case OWSInteractionType_Unknown:
case OWSInteractionType_UnreadIndicator:
case OWSInteractionType_Offer:
canShowDate = NO;
break;
case OWSInteractionType_IncomingMessage:
case OWSInteractionType_OutgoingMessage:
case OWSInteractionType_Error:
case OWSInteractionType_Info:
case OWSInteractionType_Call:
canShowDate = YES;
break;
}
BOOL shouldShowDate = NO;
if (!canShowDate) {
shouldShowDate = NO;
shouldShowDateOnNextViewItem = YES;
} else if (shouldShowDateOnNextViewItem) {
shouldShowDate = YES;
shouldShowDateOnNextViewItem = NO;
} else {
uint64_t viewItemTimestamp = viewItem.interaction.timestampForSorting;
OWSAssert(viewItemTimestamp > 0);
OWSAssert(previousViewItemTimestamp > 0);
uint64_t timeDifferenceMs = viewItemTimestamp - previousViewItemTimestamp;
static const uint64_t kShowTimeIntervalMs = 5 * kMinuteInMs;
if (timeDifferenceMs > kShowTimeIntervalMs) {
shouldShowDate = YES;
}
shouldShowDateOnNextViewItem = NO;
}
// If this is an existing view item and it has changed size,
// note that so that we can reload this cell while doing
// incremental updates.
if (viewItem.shouldShowDate != shouldShowDate && viewItem.previousRow != NSNotFound) {
[rowsThatChangedSize addObject:@(viewItem.previousRow)];
}
viewItem.shouldShowDate = shouldShowDate;
previousViewItemTimestamp = viewItem.interaction.timestampForSorting;
}
// Update the "shouldShowDate" property of the view items.
OWSInteractionType lastInteractionType = OWSInteractionType_Unknown;
MessageRecipientStatus lastRecipientStatus = MessageRecipientStatusUploading;
NSString *_Nullable lastIncomingSenderId = nil;
for (ConversationViewItem *viewItem in viewItems.reverseObjectEnumerator) {
BOOL shouldHideRecipientStatus = NO;
BOOL shouldHideBubbleTail = NO;
OWSInteractionType interactionType = viewItem.interaction.interactionType;
if (interactionType == OWSInteractionType_OutgoingMessage) {
TSOutgoingMessage *outgoingMessage = (TSOutgoingMessage *)viewItem.interaction;
MessageRecipientStatus recipientStatus =
[MessageRecipientStatusUtils recipientStatusWithOutgoingMessage:outgoingMessage];
if (outgoingMessage.messageState == TSOutgoingMessageStateUnsent) {
// always show "failed to send" status
shouldHideRecipientStatus = NO;
} else {
shouldHideRecipientStatus
= (interactionType == lastInteractionType && recipientStatus == lastRecipientStatus);
}
shouldHideBubbleTail = (interactionType == lastInteractionType && recipientStatus == lastRecipientStatus);
lastRecipientStatus = recipientStatus;
} else if (interactionType == OWSInteractionType_IncomingMessage) {
TSIncomingMessage *incomingMessage = (TSIncomingMessage *)viewItem.interaction;
NSString *incomingSenderId = incomingMessage.authorId;
OWSAssert(incomingSenderId.length > 0);
shouldHideBubbleTail = (interactionType == lastInteractionType &&
[NSObject isNullableObject:lastIncomingSenderId equalTo:incomingSenderId]);
lastIncomingSenderId = incomingSenderId;
}
lastInteractionType = interactionType;
// If this is an existing view item and it has changed size,
// note that so that we can reload this cell while doing
// incremental updates.
if (viewItem.shouldHideRecipientStatus != shouldHideRecipientStatus && viewItem.previousRow != NSNotFound) {
[rowsThatChangedSize addObject:@(viewItem.previousRow)];
}
viewItem.shouldHideRecipientStatus = shouldHideRecipientStatus;
viewItem.shouldHideBubbleTail = shouldHideBubbleTail;
}
self.viewItems = viewItems;
self.viewItemCache = viewItemCache;
return [rowsThatChangedSize copy];
}
// Whenever an interaction is modified, we need to reload it from the DB
// and update the corresponding view item.
- (void)reloadInteractionForViewItem:(ConversationViewItem *)viewItem
{
OWSAssertIsOnMainThread();
OWSAssert(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) {
OWSFail(@"%@ could not reload interaction", self.logTag);
} else {
[viewItem replaceInteraction:interaction transaction:transaction];
}
}];
}
- (nullable ConversationViewItem *)viewItemForIndex:(NSInteger)index
{
if (index < 0 || index >= (NSInteger)self.viewItems.count) {
OWSFail(@"%@ Invalid view item index: %zd", self.logTag, index);
return nil;
}
return self.viewItems[(NSUInteger)index];
}
#pragma mark - UICollectionViewDataSource
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return (NSInteger)self.viewItems.count;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
ConversationViewItem *_Nullable viewItem = [self viewItemForIndex:indexPath.row];
ConversationViewCell *cell = [viewItem dequeueCellForCollectionView:self.collectionView indexPath:indexPath];
if (!cell) {
OWSFail(@"%@ Could not dequeue cell.", self.logTag);
return cell;
}
cell.viewItem = viewItem;
cell.delegate = self;
cell.contentWidth = self.layout.contentWidth;
[cell loadForDisplay];
return cell;
}
#pragma mark - swipe to show message details
- (void)didPanWithGestureRecognizer:(UIPanGestureRecognizer *)gestureRecognizer
viewItem:(ConversationViewItem *)conversationItem
{
self.currentShowMessageDetailsPanGesture = gestureRecognizer;
const CGFloat swipeTranslation
= ([gestureRecognizer translationInView:self.view].x * (self.view.isRTL ? +1.f : -1.f));
const CGFloat ratioComplete = Clamp(swipeTranslation / self.view.frame.size.width, 0, 1);
switch (gestureRecognizer.state) {
case UIGestureRecognizerStateBegan: {
TSInteraction *interaction = conversationItem.interaction;
if ([interaction isKindOfClass:[TSIncomingMessage class]] ||
[interaction isKindOfClass:[TSOutgoingMessage class]]) {
// Canary check in case we later have another reason to set navigationController.delegate - we don't
// want to inadvertently clobber it here.
OWSAssert(self.navigationController.delegate == nil);
self.navigationController.delegate = self;
[self showMetadataViewForViewItem:conversationItem];
} else {
OWSFail(@"%@ Can't show message metadata for message of type: %@", self.logTag, [interaction class]);
}
break;
}
case UIGestureRecognizerStateChanged: {
UIPercentDrivenInteractiveTransition *transition = self.showMessageDetailsTransition;
if (!transition) {
DDLogVerbose(@"%@ transition not set up yet", self.logTag);
return;
}
[transition updateInteractiveTransition:ratioComplete];
break;
}
case UIGestureRecognizerStateEnded: {
const CGFloat velocity = [gestureRecognizer velocityInView:self.view].x;
UIPercentDrivenInteractiveTransition *transition = self.showMessageDetailsTransition;
if (!transition) {
DDLogVerbose(@"%@ transition not set up yet", self.logTag);
return;
}
// Complete the transition if moved sufficiently far or fast
// Note this is trickier for incoming, since you are already on the left, and have less space.
if (ratioComplete > 0.3 || velocity < -800) {
[transition finishInteractiveTransition];
} else {
[transition cancelInteractiveTransition];
}
break;
}
case UIGestureRecognizerStateCancelled:
case UIGestureRecognizerStateFailed: {
UIPercentDrivenInteractiveTransition *transition = self.showMessageDetailsTransition;
if (!transition) {
DDLogVerbose(@"%@ transition not set up yet", self.logTag);
return;
}
[transition cancelInteractiveTransition];
break;
}
default:
break;
}
}
- (nullable id<UIViewControllerAnimatedTransitioning>)navigationController:
(UINavigationController *)navigationController
animationControllerForOperation:(UINavigationControllerOperation)operation
fromViewController:(UIViewController *)fromVC
toViewController:(UIViewController *)toVC
{
return [SlideOffAnimatedTransition new];
}
- (nullable id<UIViewControllerInteractiveTransitioning>)
navigationController:(UINavigationController *)navigationController
interactionControllerForAnimationController:(id<UIViewControllerAnimatedTransitioning>)animationController
{
// We needed to be the navigation controller delegate to specify the interactive "slide left for message details"
// animation But we may not want to be the navigation controller delegate permanently.
self.navigationController.delegate = nil;
UIPanGestureRecognizer *recognizer = self.currentShowMessageDetailsPanGesture;
if (recognizer == nil) {
// Not in the middle of the `currentShowMessageDetailsPanGesture`, abort.
return nil;
}
if (recognizer.state == UIGestureRecognizerStateBegan) {
self.showMessageDetailsTransition = [UIPercentDrivenInteractiveTransition new];
self.showMessageDetailsTransition.completionCurve = UIViewAnimationCurveEaseOut;
} else {
self.showMessageDetailsTransition = nil;
}
return self.showMessageDetailsTransition;
}
#pragma mark - UICollectionViewDelegate
- (void)collectionView:(UICollectionView *)collectionView
willDisplayCell:(UICollectionViewCell *)cell
forItemAtIndexPath:(NSIndexPath *)indexPath
{
OWSAssert([cell isKindOfClass:[ConversationViewCell class]]);
ConversationViewCell *conversationViewCell = (ConversationViewCell *)cell;
conversationViewCell.isCellVisible = YES;
}
- (void)collectionView:(UICollectionView *)collectionView
didEndDisplayingCell:(nonnull UICollectionViewCell *)cell
forItemAtIndexPath:(nonnull NSIndexPath *)indexPath
{
OWSAssert([cell isKindOfClass:[ConversationViewCell class]]);
ConversationViewCell *conversationViewCell = (ConversationViewCell *)cell;
conversationViewCell.isCellVisible = NO;
}
@end
NS_ASSUME_NONNULL_END