gistfile1.txt

#pragma mark Info Disclosure button


- (IBAction)infoDisclosureButtonClick:(id)sender {
    UIButton *infoDisclosureButton = (UIButton*)sender;
    // View hiearchy: InfoDisclosureButton -> Cell Content View -> Some Cell Internal View -> Cell
    UITableViewCell *cell = (UITableViewCell*)infoDisclosureButton.superview.superview.superview;
    NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
    NSInteger index = indexPath.row;
    NNItem *item = self.items[(NSUInteger)index];
    
    [item setDisclosureButtonCurrentlyOpen:!item.disclosureButtonCurrentlyOpen];
    
    if (item.disclosureButtonCurrentlyOpen) {
        NSArray *validDescriptionUnits = [self validDescriptionUnitsFromAllDescriptionUnits:item.itemDescriptionUnits];
        
        NSString *description = item.description;
        CGSize descriptionSize = [description sizeWithAttributes:[NSDictionary dictionaryWithObject:[UIFont fontWithName:@"Helvetica Neue" size:17] forKey: NSFontAttributeName]];
        [self setupDetailsForCell:cell forValidDescriptionUnits:validDescriptionUnits descriptionString:description descriptionSize:descriptionSize];
    } else {
        [self teardownDetailsForCell:cell];
    }
    
    NSLog(@"%@", self.tableView);
    
    [self.tableView reloadData];
    //[self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}

static const NSUInteger NNDetailLabelsTag = 923;

- (void)setupDetailsForCell:(UITableViewCell*)cell forValidDescriptionUnits:(NSArray*)validDescriptionUnits descriptionString:(NSString*)descriptionString descriptionSize:(CGSize)descriptionSize {
    [self teardownDetailsForCell:cell];
    
    NSUInteger count = 1;
    
    for (NNItemDescriptionUnit *descriptionUnit in validDescriptionUnits) {
        UILabel *label = [[UILabel alloc] init];
        [label setFrame:CGRectMake(5.0, (CGFloat)44.0 + count * (CGFloat)49.0, cell.frame.size.width - (CGFloat)5.0, 44.0)];
        NSLog(@"Label: %@", label);
        [label setText: descriptionUnit.itemDescription];
        [label setTag:NNDetailLabelsTag];
        [cell.contentView addSubview:label];
        
        count++;
    }
    
    UILabel *description = [[UILabel alloc] init];
    [description setFrame:CGRectMake(5.0, (CGFloat)44.0 + count * (CGFloat)49.0, cell.frame.size.width - (CGFloat)5.0, descriptionSize.height)];
    [description setText:descriptionString];
    [description setTag:NNDetailLabelsTag];
    [cell.contentView addSubview:description];
}

- (void)teardownDetailsForCell:(UITableViewCell*)cell {
    while ([cell.contentView viewWithTag:NNDetailLabelsTag]) {
        [[cell.contentView viewWithTag:NNDetailLabelsTag] removeFromSuperview];
    }
}

- (NSArray*)validDescriptionUnitsFromAllDescriptionUnits:(NSArray*)allDescriptionUnits {
    NSMutableArray *validDescripionUnits = [NSMutableArray array];
    
    for (NNItemDescriptionUnit *descriptionUnit in allDescriptionUnits) {
        if (descriptionUnit.isValid) {
            [validDescripionUnits addObject:descriptionUnit];
        }
    }
    
    return [NSArray arrayWithArray:validDescripionUnits];
}