talk-ios/VideoCalls/FileMessageTableViewCell.m

//
//  FileMessageTableViewCell.m
//  VideoCalls
//
//  Created by Ivan Sein on 29.08.18.
//  Copyright © 2018 struktur AG. All rights reserved.
//

#import "FileMessageTableViewCell.h"
#import "SLKUIConstants.h"
#import "NCFilePreviewSessionManager.h"
#import "UIImageView+AFNetworking.h"
#import "UIImageView+Letters.h"

@implementation FilePreviewImageView : UIImageView

@end

@implementation FileMessageTableViewCell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        self.selectionStyle = UITableViewCellSelectionStyleNone;
        self.backgroundColor = [UIColor whiteColor];
        
        [self configureSubviews];
    }
    return self;
}

- (void)configureSubviews
{
    _avatarView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, kFileMessageCellAvatarHeight, kFileMessageCellAvatarHeight)];
    _avatarView.translatesAutoresizingMaskIntoConstraints = NO;
    _avatarView.userInteractionEnabled = NO;
    _avatarView.backgroundColor = [UIColor colorWithRed:0.84 green:0.84 blue:0.84 alpha:1.0]; /*#d5d5d5*/
    _avatarView.layer.cornerRadius = kFileMessageCellAvatarHeight/2.0;
    _avatarView.layer.masksToBounds = YES;
    
    _previewImageView = [[FilePreviewImageView alloc] initWithFrame:CGRectMake(0, 0, kFileMessageCellFilePreviewHeight, kFileMessageCellFilePreviewHeight)];
    _previewImageView.translatesAutoresizingMaskIntoConstraints = NO;
    _previewImageView.userInteractionEnabled = NO;
    _previewImageView.layer.cornerRadius = 4.0;
    _previewImageView.layer.masksToBounds = YES;
    [_previewImageView setImage:[UIImage imageNamed:@"file-default-preview"]];
    
    if ([self.reuseIdentifier isEqualToString:FileMessageCellIdentifier]) {
        [self.contentView addSubview:_avatarView];
        [self.contentView addSubview:self.titleLabel];
        [self.contentView addSubview:self.dateLabel];
    }
    [self.contentView addSubview:_previewImageView];
    [self.contentView addSubview:self.bodyTextView];
    
    NSDictionary *views = @{@"avatarView": self.avatarView,
                            @"titleLabel": self.titleLabel,
                            @"dateLabel": self.dateLabel,
                            @"previewImageView": self.previewImageView,
                            @"bodyTextView": self.bodyTextView,
                            };
    
    NSDictionary *metrics = @{@"avatarSize": @(kFileMessageCellAvatarHeight),
                              @"previewSize": @(kFileMessageCellFilePreviewHeight),
                              @"padding": @15,
                              @"avatarGap": @50,
                              @"right": @10,
                              @"left": @5
                              };
    
    if ([self.reuseIdentifier isEqualToString:FileMessageCellIdentifier]) {
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-right-[avatarView(avatarSize)]-right-[titleLabel]-[dateLabel(40)]-right-|" options:0 metrics:metrics views:views]];
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-right-[avatarView(avatarSize)]-right-[previewImageView(previewSize)]-(>=0)-|" options:0 metrics:metrics views:views]];
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-right-[avatarView(avatarSize)]-right-[bodyTextView(>=0)]-right-|" options:0 metrics:metrics views:views]];
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-right-[titleLabel(28)]-left-[previewImageView(previewSize)]-left-[bodyTextView(>=0@999)]-left-|" options:0 metrics:metrics views:views]];
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-right-[dateLabel(28)]-left-[previewImageView(previewSize)]-left-[bodyTextView(>=0@999)]-left-|" options:0 metrics:metrics views:views]];
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-right-[avatarView(avatarSize)]-(>=0)-|" options:0 metrics:metrics views:views]];
    } else if ([self.reuseIdentifier isEqualToString:GroupedFileMessageCellIdentifier]) {
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-avatarGap-[previewImageView(previewSize)]-(>=0)-|" options:0 metrics:metrics views:views]];
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-avatarGap-[bodyTextView(>=0)]-right-|" options:0 metrics:metrics views:views]];
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-left-[previewImageView(previewSize)]-left-[bodyTextView(>=0@999)]-left-|" options:0 metrics:metrics views:views]];
    }
}

- (void)prepareForReuse
{
    [super prepareForReuse];
    
    self.selectionStyle = UITableViewCellSelectionStyleNone;
    
    CGFloat pointSize = [FileMessageTableViewCell defaultFontSize];
    
    self.titleLabel.font = [UIFont systemFontOfSize:pointSize];
    self.bodyTextView.font = [UIFont systemFontOfSize:pointSize];
    
    self.titleLabel.text = @"";
    self.bodyTextView.text = @"";
    self.dateLabel.text = @"";
    
    [self.avatarView cancelImageDownloadTask];
    self.avatarView.image = nil;
    
    self.previewImageView.image = nil;
}

#pragma mark - Getters

- (UILabel *)titleLabel
{
    if (!_titleLabel) {
        _titleLabel = [UILabel new];
        _titleLabel.translatesAutoresizingMaskIntoConstraints = NO;
        _titleLabel.backgroundColor = [UIColor clearColor];
        _titleLabel.userInteractionEnabled = NO;
        _titleLabel.numberOfLines = 0;
        _titleLabel.textColor = [UIColor lightGrayColor];
        _titleLabel.font = [UIFont systemFontOfSize:[FileMessageTableViewCell defaultFontSize]];
    }
    return _titleLabel;
}

- (UILabel *)dateLabel
{
    if (!_dateLabel) {
        _dateLabel = [UILabel new];
        _dateLabel.textAlignment = NSTextAlignmentRight;
        _dateLabel.translatesAutoresizingMaskIntoConstraints = NO;
        _dateLabel.backgroundColor = [UIColor clearColor];
        _dateLabel.userInteractionEnabled = NO;
        _dateLabel.numberOfLines = 0;
        _dateLabel.textColor = [UIColor lightGrayColor];
        _dateLabel.font = [UIFont systemFontOfSize:12.0];
    }
    return _dateLabel;
}

- (MessageBodyTextView *)bodyTextView
{
    if (!_bodyTextView) {
        _bodyTextView = [MessageBodyTextView new];
        _bodyTextView.font = [UIFont systemFontOfSize:[FileMessageTableViewCell defaultFontSize]];
    }
    return _bodyTextView;
}

- (void)setGuestAvatar:(NSString *)displayName
{
    UIColor *guestAvatarColor = [UIColor colorWithRed:0.84 green:0.84 blue:0.84 alpha:1.0]; /*#d5d5d5*/
    NSString *name = ([displayName isEqualToString:@""]) ? @"?" : displayName;
    [_avatarView setImageWithString:name color:guestAvatarColor circular:true];
}

+ (CGFloat)defaultFontSize
{
    CGFloat pointSize = 16.0;
    
    //    NSString *contentSizeCategory = [[UIApplication sharedApplication] preferredContentSizeCategory];
    //    pointSize += SLKPointSizeDifferenceForCategory(contentSizeCategory);
    
    return pointSize;
}

@end