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91f3ba1f49
Because calling -invalidateCalculatedLayout removes the current constrained size and therefore any -setNeedsLayout calls in the future won't have a valid constrained size to proceed. Instead, cell nodes should be relaid-out using the new APIs introduced in ASTableView and ASCollectionView, which are -relayoutRowAtIndexPath:withRowAnimation and -relayoutItemAtIndexPath, respectively.
129 lines
3.6 KiB
Objective-C
129 lines
3.6 KiB
Objective-C
/* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "ASCellNode.h"
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#import <AsyncDisplayKit/_ASDisplayView.h>
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#import <AsyncDisplayKit/ASDisplayNode+Subclasses.h>
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#import <AsyncDisplayKit/ASTextNode.h>
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#import <AsyncDisplayKit/ASInsetLayoutSpec.h>
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#pragma mark -
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#pragma mark ASCellNode
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@implementation ASCellNode
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- (instancetype)init
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{
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if (!(self = [super init]))
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return nil;
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// use UITableViewCell defaults
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_selectionStyle = UITableViewCellSelectionStyleDefault;
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self.clipsToBounds = YES;
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return self;
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}
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- (instancetype)initWithLayerBlock:(ASDisplayNodeLayerBlock)viewBlock didLoadBlock:(ASDisplayNodeDidLoadBlock)didLoadBlock
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{
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ASDisplayNodeAssertNotSupported();
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return nil;
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}
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- (instancetype)initWithViewBlock:(ASDisplayNodeViewBlock)viewBlock didLoadBlock:(ASDisplayNodeDidLoadBlock)didLoadBlock
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{
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ASDisplayNodeAssertNotSupported();
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return nil;
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}
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- (void)setLayerBacked:(BOOL)layerBacked
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{
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// ASRangeController expects ASCellNodes to be view-backed. (Layer-backing is supported on ASCellNode subnodes.)
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ASDisplayNodeAssert(!layerBacked, @"ASCellNode does not support layer-backing.");
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}
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- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
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{
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ASDisplayNodeAssertMainThread();
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ASDisplayNodeAssert([self.view isKindOfClass:_ASDisplayView.class], @"ASCellNode views must be of type _ASDisplayView");
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[(_ASDisplayView *)self.view __forwardTouchesBegan:touches withEvent:event];
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}
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- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
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{
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ASDisplayNodeAssertMainThread();
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ASDisplayNodeAssert([self.view isKindOfClass:_ASDisplayView.class], @"ASCellNode views must be of type _ASDisplayView");
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[(_ASDisplayView *)self.view __forwardTouchesMoved:touches withEvent:event];
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}
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- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
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{
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ASDisplayNodeAssertMainThread();
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ASDisplayNodeAssert([self.view isKindOfClass:_ASDisplayView.class], @"ASCellNode views must be of type _ASDisplayView");
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[(_ASDisplayView *)self.view __forwardTouchesEnded:touches withEvent:event];
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}
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- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
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{
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ASDisplayNodeAssertMainThread();
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ASDisplayNodeAssert([self.view isKindOfClass:_ASDisplayView.class], @"ASCellNode views must be of type _ASDisplayView");
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[(_ASDisplayView *)self.view __forwardTouchesCancelled:touches withEvent:event];
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}
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@end
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#pragma mark -
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#pragma mark ASTextCellNode
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@interface ASTextCellNode () {
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NSString *_text;
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ASTextNode *_textNode;
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}
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@end
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@implementation ASTextCellNode
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static const CGFloat kFontSize = 18.0f;
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- (instancetype)init
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{
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if (!(self = [super init]))
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return nil;
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_textNode = [[ASTextNode alloc] init];
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[self addSubnode:_textNode];
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return self;
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}
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- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
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{
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static const CGFloat kHorizontalPadding = 15.0f;
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static const CGFloat kVerticalPadding = 11.0f;
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UIEdgeInsets insets = UIEdgeInsetsMake(kVerticalPadding, kHorizontalPadding, kVerticalPadding, kHorizontalPadding);
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return [ASInsetLayoutSpec insetLayoutSpecWithInsets:insets child:_textNode];
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}
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- (void)setText:(NSString *)text
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{
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if (_text == text)
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return;
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_text = [text copy];
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_textNode.attributedString = [[NSAttributedString alloc] initWithString:_text
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attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:kFontSize]}];
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}
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@end
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