#import "ASCellNode.h"

#import "ASDisplayNode+Subclasses.h"

#import "ASTextNode.h"

#pragma mark -

#pragma mark ASCellNode

@implementation ASCellNode

- (instancetype)init

{

if (!(self = [super init]))

return nil;

// use UITableViewCell defaults

_selectionStyle = UITableViewCellSelectionStyleDefault;

return self;

}

- (void)setLayerBacked:(BOOL)layerBacked

{

// ASRangeController expects ASCellNodes to be view-backed. (Layer-backing is supported on ASCellNode subnodes.)

ASDisplayNodeAssert(!layerBacked, @"ASCellNode does not support layer-backing.");

}

#pragma mark -

#pragma mark ASTextCellNode

@interface ASTextCellNode () {

NSString *_text;

ASTextNode *_textNode;

}

@implementation ASTextCellNode

static const CGFloat kHorizontalPadding = 15.0f;

static const CGFloat kVerticalPadding = 11.0f;

static const CGFloat kFontSize = 18.0f;

- (instancetype)init

{

if (!(self = [super init]))

return nil;

_textNode = [[ASTextNode alloc] init];

[self addSubnode:_textNode];

return self;

}

- (CGSize)calculateSizeThatFits:(CGSize)constrainedSize

{

CGSize availableSize = CGSizeMake(constrainedSize.width - 2 * kHorizontalPadding,

constrainedSize.height - 2 * kVerticalPadding);

CGSize textNodeSize = [_textNode measure:availableSize];

return CGSizeMake(ceilf(2 * kHorizontalPadding + textNodeSize.width),

ceilf(2 * kVerticalPadding + textNodeSize.height));

}

- (void)layout

{

_textNode.frame = CGRectInset(self.bounds, kHorizontalPadding, kVerticalPadding);

}

- (void)setText:(NSString *)text

{

if (_text == text)

return;

_text = [text copy];

_textNode.attributedString = [[NSAttributedString alloc] initWithString:_text

attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:kFontSize]}];

[self invalidateCalculatedSize];

}