titleDetailCell.m

//
//  TCAnswerDetailTitleDetailCell.m
//  Three Cents
//
//  Created by Bob Spryn on 4/11/13.
//  Copyright (c) 2013 Three Cents, Inc. All rights reserved.
//

#import "TCAnswerDetailTitleDetailCell.h"

static CGFloat const kTCLabelLeftPadding = 10;
static CGFloat const kTCLabelRightPadding = 10;
static CGFloat const kTCLabelTopPadding = 7;
static CGFloat const kTCLabelBottomPadding = 7;
static CGFloat const kTCLabelSpacing = 2;

#define mTCTitleLabelFont [UIFont fontWithDescriptor:[[UIFontDescriptor preferredAvenirNextFontDescriptorWithTextStyle:UIFontTextStyleCaption1] fontDescriptorWithSymbolicTraits:UIFontDescriptorTraitBold] size:0]
#define mTCDetailLabelFont [UIFont fontWithDescriptor:[UIFontDescriptor preferredAvenirNextFontDescriptorWithTextStyle:UIFontTextStyleCaption1] size:0]

@implementation TCAnswerDetailTitleDetailCell

- (id) initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
    
        self.titleLabel.font = mTCTitleLabelFont;
        self.detailLabel.font = mTCDetailLabelFont;
        self.detailLabel.backgroundColor = self.titleLabel.backgroundColor = [UIColor clearColor];
        self.titleLabel.numberOfLines = self.detailLabel.numberOfLines = 0;
        self.titleLabel.lineBreakMode = self.detailLabel.lineBreakMode = NSLineBreakByWordWrapping;
        [self.titleLabel setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical];
        [self.detailLabel setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical];
        [self setupConstraints];
    }
    return self;
}

- (void) setupConstraints {
    [self.contentView addConstraints:[NSLayoutConstraint
                                      constraintsWithVisualFormat:@"|-kTCLabelLeftPadding-[_titleLabel]"
                                      options:0
                                      metrics:@{@"kTCLabelLeftPadding": [NSNumber numberWithFloat:kTCLabelLeftPadding], @"kTCLabelRightPadding": [NSNumber numberWithFloat:kTCLabelRightPadding]}
                                      views:NSDictionaryOfVariableBindings(_titleLabel)]];
    [self.contentView addConstraints:[NSLayoutConstraint
                                      constraintsWithVisualFormat:@"|-kTCLabelLeftPadding-[_detailLabel]"
                                      options:0
                                      metrics:@{@"kTCLabelLeftPadding": [NSNumber numberWithFloat:kTCLabelLeftPadding], @"kTCLabelRightPadding": [NSNumber numberWithFloat:kTCLabelRightPadding]}
                                      views:NSDictionaryOfVariableBindings(_detailLabel)]];
    [self.contentView addConstraints:[NSLayoutConstraint
                                      constraintsWithVisualFormat:@"V:|-kTCLabelTopPadding-[_titleLabel]-kTCLabelSpacing-[_detailLabel]-kTCLabelBottomPadding-|"
                                      options:0
                                      metrics:@{@"kTCLabelTopPadding": [NSNumber numberWithFloat:kTCLabelTopPadding],
                                      @"kTCLabelBottomPadding": [NSNumber numberWithFloat:kTCLabelBottomPadding],
                                      @"kTCLabelSpacing": [NSNumber numberWithFloat:kTCLabelSpacing]
                                      }
                                      views:NSDictionaryOfVariableBindings(_titleLabel,_detailLabel)]];
}

- (UILabel *)titleLabel {
    if (!_titleLabel) {
        _titleLabel = [[UILabel alloc] init];
        _titleLabel.translatesAutoresizingMaskIntoConstraints = NO;
        [self.contentView addSubview:_titleLabel];
    }
    return _titleLabel;
}

- (UILabel *)detailLabel {
    if (!_detailLabel) {
        _detailLabel = [[UILabel alloc] init];
        _detailLabel.translatesAutoresizingMaskIntoConstraints = NO;
        [self.contentView addSubview:_detailLabel];
    }
    return _detailLabel;
}

- (void) layoutSubviews {
    self.titleLabel.preferredMaxLayoutWidth = self.detailLabel.preferredMaxLayoutWidth = self.frame.size.width - kTCLabelLeftPadding - kTCLabelRightPadding - self.accessoryViewWidth;
    [super layoutSubviews];
}

+ (CGFloat)heightForCellWithTableWidth:(CGFloat)tableWidth withTitleString:(NSString *)titleString detailString:(NSString *)detailString withDisclosureArrow:(BOOL)disclosure {
    CGFloat widthForCalc = tableWidth - kTCLabelLeftPadding - kTCLabelRightPadding - (disclosure ? kAccessoryViewWidth : 0);
    CGFloat titleHeight = [titleString boundingRectWithSize:CGSizeMake(widthForCalc, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName: mTCTitleLabelFont} context:nil].size.height;
    CGFloat detailHeight = [detailString boundingRectWithSize:CGSizeMake(widthForCalc, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName: mTCDetailLabelFont} context:nil].size.height;
    return kTCLabelTopPadding + titleHeight + detailHeight + kTCLabelBottomPadding + kTCLabelSpacing;
}

- (void) configureCellWithTitleLabelString:(NSString *)titleString detailLabelString:(NSString *)detailString {
    self.titleLabel.text = titleString;
    self.detailLabel.text = detailString;
}

@end