Core Apps » ChatSecure:Android

@interface OTRMessagesViewController () <UITextViewDelegate, OTRAttachmentPickerDelegate, OTRYapViewHandlerDelegateProtocol, OTRMessagesCollectionViewFlowLayoutSizeProtocol, OTRMessagesCollectionViewFlowLayoutSupplementaryViewProtocol, OTRRoomOccupantsViewControllerDelegate> {

@property (nonatomic) BOOL automaticURLFetchingDisabled;

@property (nonatomic, strong) OTRMessagesUnknownSenderCell *prototypeCellUnknownSender;

    layout.supplementaryViewDelegate = self;

    UINib *nib = [UINib nibWithNibName:@"OTRMessageUnknownSenderCell" bundle:OTRAssets.resourcesBundle];

    [self.collectionView registerNib:nib forSupplementaryViewOfKind:[OTRMessagesUnknownSenderCell reuseIdentifier] withReuseIdentifier:[OTRMessagesUnknownSenderCell reuseIdentifier]];

        self.automaticURLFetchingDisabled = [[self accountWithTransaction:transaction] disableAutomaticURLFetching];

#pragma - mark OTRMessagesCollectionViewFlowLayoutSupplementaryViewProtocol

- (nullable NSArray *)supplementaryViewsForCellAtIndexPath:(NSIndexPath *)indexPath {

    id<OTRMessageProtocol,JSQMessageData> message = [self messageAtIndexPath:indexPath];

    if ([self isGroupChat] && [message isKindOfClass:[OTRGroupDownloadMessage class]]) {

        OTRGroupDownloadMessage *roomMessage = (OTRGroupDownloadMessage *)message;

        // A message that is not automatically downloaded, even though auto download not disabled, means that this is group download message from someone who is not our friend.

        if ([roomMessage.messageError isAutomaticDownloadError] && !self.automaticURLFetchingDisabled && [roomMessage.media isKindOfClass:[OTRImageItem class]]) {

            if (!_prototypeCellUnknownSender) {

                UINib *nib = [UINib nibWithNibName:@"OTRMessageUnknownSenderCell" bundle:OTRAssets.resourcesBundle];

                _prototypeCellUnknownSender = (OTRMessagesUnknownSenderCell *)[nib instantiateWithOwner:self options:nil][0];

            }

            [self populateUnknownSenderCell:_prototypeCellUnknownSender withMessage:message];

            [_prototypeCellUnknownSender setNeedsLayout];

            [_prototypeCellUnknownSender layoutIfNeeded];

            _prototypeCellUnknownSender.frame = CGRectMake(0, 0, self.collectionView.bounds.size.width, _prototypeCellUnknownSender.frame.size.height);

            int height = [_prototypeCellUnknownSender systemLayoutSizeFittingSize:UILayoutFittingCompressedSize].height + 1;

            OTRMessagesCollectionSupplementaryViewInfo *info = [[OTRMessagesCollectionSupplementaryViewInfo alloc] initWithKind:[OTRMessagesUnknownSenderCell reuseIdentifier] height:height];

            return [NSArray arrayWithObject:info];

        }

    }

    return nil;

}

- (void)populateUnknownSenderCell:(OTRMessagesUnknownSenderCell *)cell withMessage:(id<OTRMessageProtocol,JSQMessageData>)message {

    cell.titleLabel.text = [NSString stringWithFormat:ADD_FRIEND_TO_AUTO_DOWNLOAD(), message.senderDisplayName];

}

- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath {

    if ([OTRMessagesUnknownSenderCell.reuseIdentifier isEqualToString:kind]) {

        id<OTRMessageProtocol,JSQMessageData> message = [self messageAtIndexPath:indexPath];

        OTRMessagesUnknownSenderCell *cell = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:kind forIndexPath:indexPath];

        [self populateUnknownSenderCell:cell withMessage:message];

        return cell;

    }

    // We should never get there, but if we do, don't return nil

    return [[UICollectionReusableView alloc] initWithFrame:CGRectZero];

}