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Shuffle & Cleanup Stuff (#3080)
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Adlai Holler
GitHub
289
Source/Layout/ASLayoutElementPrivate.h
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289
Source/Layout/ASLayoutElementPrivate.h
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//
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// ASLayoutElementPrivate.h
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// AsyncDisplayKit
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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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 <AsyncDisplayKit/ASAvailability.h>
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#import <AsyncDisplayKit/ASDimension.h>
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#if AS_TARGET_OS_IOS
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#import <UIKit/UIGeometry.h>
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#else
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#import <Foundation/NSGeometry.h>
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#endif
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@protocol ASLayoutElement;
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@class ASLayoutElementStyle;
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#pragma mark - ASLayoutElementContext
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struct ASLayoutElementContext {
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int32_t transitionID;
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};
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extern int32_t const ASLayoutElementContextInvalidTransitionID;
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extern int32_t const ASLayoutElementContextDefaultTransitionID;
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extern struct ASLayoutElementContext const ASLayoutElementContextNull;
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extern BOOL ASLayoutElementContextIsNull(struct ASLayoutElementContext context);
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extern struct ASLayoutElementContext ASLayoutElementContextMake(int32_t transitionID);
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extern void ASLayoutElementSetCurrentContext(struct ASLayoutElementContext context);
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extern struct ASLayoutElementContext ASLayoutElementGetCurrentContext();
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extern void ASLayoutElementClearCurrentContext();
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#pragma mark - ASLayoutElementLayoutDefaults
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#define ASLayoutElementLayoutCalculationDefaults \
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- (ASLayout *)layoutThatFits:(ASSizeRange)constrainedSize\
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{\
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_Pragma("clang diagnostic push")\
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_Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")\
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/* For now we just call the deprecated measureWithSizeRange: method to not break old API */ \
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return [self measureWithSizeRange:constrainedSize]; \
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_Pragma("clang diagnostic pop")\
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} \
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\
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- (ASLayout *)measureWithSizeRange:(ASSizeRange)constrainedSize\
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{\
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return [self layoutThatFits:constrainedSize parentSize:constrainedSize.max];\
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}\
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\
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- (ASLayout *)calculateLayoutThatFits:(ASSizeRange)constrainedSize\
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restrictedToSize:(ASLayoutElementSize)size\
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relativeToParentSize:(CGSize)parentSize\
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{\
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const ASSizeRange resolvedRange = ASSizeRangeIntersect(constrainedSize, ASLayoutElementSizeResolve(self.style.size, parentSize));\
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return [self calculateLayoutThatFits:resolvedRange];\
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}\
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#pragma mark - ASLayoutElementFinalLayoutElement
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/**
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* The base protocol for ASLayoutElementFinalLayoutElement. Generally the methods/properties in this class do not need to be
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* called by the end user and are only called internally. However, there may be a case where the methods are useful.
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*/
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@protocol ASLayoutElementFinalLayoutElement <NSObject>
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/**
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* @abstract This method can be used to give the user a chance to wrap an ASLayoutElement in an ASLayoutSpec
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* just before it is added to a parent ASLayoutSpec. For example, if you wanted an ASTextNode that was always
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* inside of an ASInsetLayoutSpec, you could subclass ASTextNode and implement finalLayoutElement so that it wraps
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* itself in an inset spec.
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*
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* Note that any ASLayoutElement other than self that is returned MUST set isFinalLayoutElement to YES. Make sure
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* to do this BEFORE adding a child to the ASLayoutElement.
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*
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* @return The layoutElement that will be added to the parent layout spec. Defaults to self.
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*/
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- (id<ASLayoutElement>)finalLayoutElement;
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/**
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* A flag to indicate that this ASLayoutElement was created in finalLayoutElement. This MUST be set to YES
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* before adding a child to this layoutElement.
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*/
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@property (nonatomic, assign) BOOL isFinalLayoutElement;
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@end
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// Default implementation for ASLayoutElementPrivate that can be used in classes that comply to ASLayoutElementPrivate
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#define ASLayoutElementFinalLayoutElementDefault \
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\
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@synthesize isFinalLayoutElement = _isFinalLayoutElement;\
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\
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- (id<ASLayoutElement>)finalLayoutElement\
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{\
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return self;\
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}\
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#pragma mark - ASLayoutElementExtensibility
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// Provides extension points for elments that comply to ASLayoutElement like ASLayoutSpec to add additional
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// properties besides the default one provided in ASLayoutElementStyle
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static const int kMaxLayoutElementBoolExtensions = 1;
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static const int kMaxLayoutElementStateIntegerExtensions = 4;
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static const int kMaxLayoutElementStateEdgeInsetExtensions = 1;
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typedef struct ASLayoutElementStyleExtensions {
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// Values to store extensions
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BOOL boolExtensions[kMaxLayoutElementBoolExtensions];
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NSInteger integerExtensions[kMaxLayoutElementStateIntegerExtensions];
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UIEdgeInsets edgeInsetsExtensions[kMaxLayoutElementStateEdgeInsetExtensions];
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} ASLayoutElementStyleExtensions;
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#define ASLayoutElementStyleExtensibilityForwarding \
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- (void)setLayoutOptionExtensionBool:(BOOL)value atIndex:(int)idx\
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{\
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[self.style setLayoutOptionExtensionBool:value atIndex:idx];\
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}\
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\
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- (BOOL)layoutOptionExtensionBoolAtIndex:(int)idx\
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{\
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return [self.style layoutOptionExtensionBoolAtIndex:idx];\
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}\
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\
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- (void)setLayoutOptionExtensionInteger:(NSInteger)value atIndex:(int)idx\
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{\
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[self.style setLayoutOptionExtensionInteger:value atIndex:idx];\
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}\
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\
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- (NSInteger)layoutOptionExtensionIntegerAtIndex:(int)idx\
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{\
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return [self.style layoutOptionExtensionIntegerAtIndex:idx];\
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}\
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\
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- (void)setLayoutOptionExtensionEdgeInsets:(UIEdgeInsets)value atIndex:(int)idx\
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{\
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[self.style setLayoutOptionExtensionEdgeInsets:value atIndex:idx];\
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}\
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\
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- (UIEdgeInsets)layoutOptionExtensionEdgeInsetsAtIndex:(int)idx\
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{\
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return [self.style layoutOptionExtensionEdgeInsetsAtIndex:idx];\
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}\
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#pragma mark ASLayoutElementStyleForwardingDeclaration (Deprecated)
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#define ASLayoutElementStyleForwardingDeclaration \
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@property (nonatomic, readwrite) CGFloat spacingBefore ASDISPLAYNODE_DEPRECATED_MSG("Use style.spacingBefore"); \
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@property (nonatomic, readwrite) CGFloat spacingAfter ASDISPLAYNODE_DEPRECATED_MSG("Use style.spacingAfter"); \
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@property (nonatomic, readwrite) CGFloat flexGrow ASDISPLAYNODE_DEPRECATED_MSG("Use style.flexGrow"); \
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@property (nonatomic, readwrite) CGFloat flexShrink ASDISPLAYNODE_DEPRECATED_MSG("Use style.flexShrink"); \
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@property (nonatomic, readwrite) ASDimension flexBasis ASDISPLAYNODE_DEPRECATED_MSG("Use style.flexBasis"); \
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@property (nonatomic, readwrite) ASStackLayoutAlignSelf alignSelf ASDISPLAYNODE_DEPRECATED_MSG("Use style.alignSelf"); \
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@property (nonatomic, readwrite) CGFloat ascender ASDISPLAYNODE_DEPRECATED_MSG("Use style.ascender"); \
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@property (nonatomic, readwrite) CGFloat descender ASDISPLAYNODE_DEPRECATED_MSG("Use style.descender"); \
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@property (nonatomic, assign) ASRelativeSizeRange sizeRange ASDISPLAYNODE_DEPRECATED_MSG("Don't use sizeRange anymore instead set style.width or style.height"); \
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@property (nonatomic, assign) CGPoint layoutPosition ASDISPLAYNODE_DEPRECATED_MSG("Use style.layoutPosition"); \
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#pragma mark - ASLayoutElementStyleForwarding (Deprecated)
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// For the time beeing we are forwading all style related properties on ASDisplayNode and ASLayoutSpec. This define
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// help us to not have duplicate code while moving from 1.x to 2.0s
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#define ASLayoutElementStyleForwarding \
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\
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@dynamic spacingBefore, spacingAfter, flexGrow, flexShrink, flexBasis, alignSelf, ascender, descender, sizeRange, layoutPosition;\
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\
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_Pragma("mark - ASStackLayoutElement")\
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\
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- (void)setSpacingBefore:(CGFloat)spacingBefore\
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{\
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self.style.spacingBefore = spacingBefore;\
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}\
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\
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- (CGFloat)spacingBefore\
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{\
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return self.style.spacingBefore;\
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}\
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\
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- (void)setSpacingAfter:(CGFloat)spacingAfter\
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{\
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self.style.spacingAfter = spacingAfter;\
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}\
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\
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- (CGFloat)spacingAfter\
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{\
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return self.style.spacingAfter;\
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}\
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\
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- (void)setFlexGrow:(CGFloat)flexGrow\
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{\
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self.style.flexGrow = flexGrow;\
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}\
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\
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- (CGFloat)flexGrow\
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{\
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return self.style.flexGrow;\
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}\
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\
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- (void)setFlexShrink:(CGFloat)flexShrink\
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{\
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self.style.flexShrink = flexShrink;\
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}\
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\
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- (CGFloat)flexShrink\
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{\
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return self.style.flexShrink;\
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}\
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\
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- (void)setFlexBasis:(ASDimension)flexBasis\
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{\
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self.style.flexBasis = flexBasis;\
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}\
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\
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- (ASDimension)flexBasis\
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{\
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return self.style.flexBasis;\
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}\
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\
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- (void)setAlignSelf:(ASStackLayoutAlignSelf)alignSelf\
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{\
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self.style.alignSelf = alignSelf;\
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}\
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\
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- (ASStackLayoutAlignSelf)alignSelf\
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{\
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return self.style.alignSelf;\
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}\
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\
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- (void)setAscender:(CGFloat)ascender\
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{\
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self.style.ascender = ascender;\
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}\
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\
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- (CGFloat)ascender\
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{\
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return self.style.ascender;\
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}\
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\
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- (void)setDescender:(CGFloat)descender\
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{\
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self.style.descender = descender;\
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}\
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\
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- (CGFloat)descender\
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{\
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return self.style.descender;\
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}\
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\
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_Pragma("mark - ASAbsoluteLayoutElement")\
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\
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- (void)setLayoutPosition:(CGPoint)layoutPosition\
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{\
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self.style.layoutPosition = layoutPosition;\
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}\
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\
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- (CGPoint)layoutPosition\
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{\
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return self.style.layoutPosition;\
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}\
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\
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_Pragma("clang diagnostic push")\
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_Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")\
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\
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- (void)setSizeRange:(ASRelativeSizeRange)sizeRange\
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{\
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self.style.sizeRange = sizeRange;\
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}\
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\
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- (ASRelativeSizeRange)sizeRange\
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{\
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return self.style.sizeRange;\
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}\
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\
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_Pragma("clang diagnostic pop")\
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