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git-subtree-dir: submodules/AsyncDisplayKit git-subtree-mainline: d06f423e0ed3df1fed9bd10d79ee312a9179b632 git-subtree-split: 02bedc12816e251ad71777f9d2578329b6d2bef6
48 lines
1.8 KiB
Objective-C
48 lines
1.8 KiB
Objective-C
//
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// LayoutExampleViewController.m
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// Texture
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//
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// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
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// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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#import "LayoutExampleViewController.h"
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#import "LayoutExampleNodes.h"
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@interface LayoutExampleViewController ()
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@property (nonatomic, strong) LayoutExampleNode *customNode;
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@end
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@implementation LayoutExampleViewController
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- (instancetype)initWithLayoutExampleClass:(Class)layoutExampleClass
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{
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NSAssert([layoutExampleClass isSubclassOfClass:[LayoutExampleNode class]], @"Must pass a subclass of LayoutExampleNode.");
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self = [super initWithNode:[ASDisplayNode new]];
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if (self) {
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self.title = @"Layout Example";
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_customNode = [layoutExampleClass new];
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[self.node addSubnode:_customNode];
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BOOL needsOnlyYCentering = [layoutExampleClass isEqual:[HeaderWithRightAndLeftItems class]] ||
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[layoutExampleClass isEqual:[FlexibleSeparatorSurroundingContent class]];
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self.node.backgroundColor = needsOnlyYCentering ? [UIColor lightGrayColor] : [UIColor whiteColor];
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__weak __typeof(self) weakself = self;
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self.node.layoutSpecBlock = ^ASLayoutSpec*(__kindof ASDisplayNode * _Nonnull node, ASSizeRange constrainedSize) {
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return [ASCenterLayoutSpec centerLayoutSpecWithCenteringOptions:needsOnlyYCentering ? ASCenterLayoutSpecCenteringY : ASCenterLayoutSpecCenteringXY
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sizingOptions:ASCenterLayoutSpecSizingOptionMinimumXY
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child:weakself.customNode];
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};
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}
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return self;
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}
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@end
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