mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Marc Mulcahy
1aeac1c625
Summary: Assistive technologies use the accessibility role of a component to tell the disabled user what the component is, and provide hints about how to use it. Many important roles do not have analog AccessibilityTraits on iOS. This PR adds many critical roles, such as editabletext, checkbox, menu, and switch to name a few. Accessibility states are used to convey the current state of a component. This PR adds several critical states such as checked, unchecked, on and off. [general] [change] - Adds critical accessibility roles and states. Pull Request resolved: https://github.com/facebook/react-native/pull/24095 Differential Revision: D15079245 Pulled By: cpojer fbshipit-source-id: 941b30eb8f5d565597e5ea3a04687d9809cbe372
396 lines
16 KiB
Objective-C
396 lines
16 KiB
Objective-C
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import "RCTViewManager.h"
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#import "RCTBorderStyle.h"
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#import "RCTBridge.h"
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#import "RCTConvert.h"
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#import "RCTEventDispatcher.h"
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#import "RCTLog.h"
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#import "RCTShadowView.h"
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#import "RCTUIManager.h"
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#import "RCTUIManagerUtils.h"
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#import "RCTUtils.h"
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#import "RCTView.h"
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#import "UIView+React.h"
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#import "RCTConvert+Transform.h"
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#if TARGET_OS_TV
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#import "RCTTVView.h"
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#endif
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@implementation RCTConvert(UIAccessibilityTraits)
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RCT_MULTI_ENUM_CONVERTER(UIAccessibilityTraits, (@{
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@"none": @(UIAccessibilityTraitNone),
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@"button": @(UIAccessibilityTraitButton),
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@"link": @(UIAccessibilityTraitLink),
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@"header": @(UIAccessibilityTraitHeader),
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@"search": @(UIAccessibilityTraitSearchField),
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@"image": @(UIAccessibilityTraitImage),
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@"imagebutton": @(UIAccessibilityTraitImage | UIAccessibilityTraitButton),
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@"selected": @(UIAccessibilityTraitSelected),
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@"plays": @(UIAccessibilityTraitPlaysSound),
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@"key": @(UIAccessibilityTraitKeyboardKey),
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@"keyboardkey": @(UIAccessibilityTraitKeyboardKey),
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@"text": @(UIAccessibilityTraitStaticText),
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@"summary": @(UIAccessibilityTraitSummaryElement),
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@"disabled": @(UIAccessibilityTraitNotEnabled),
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@"frequentUpdates": @(UIAccessibilityTraitUpdatesFrequently),
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@"startsMedia": @(UIAccessibilityTraitStartsMediaSession),
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@"adjustable": @(UIAccessibilityTraitAdjustable),
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@"allowsDirectInteraction": @(UIAccessibilityTraitAllowsDirectInteraction),
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@"pageTurn": @(UIAccessibilityTraitCausesPageTurn),
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@"alert": @(UIAccessibilityTraitNone),
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@"checkbox": @(UIAccessibilityTraitNone),
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@"combobox": @(UIAccessibilityTraitNone),
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@"menu": @(UIAccessibilityTraitNone),
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@"menubar": @(UIAccessibilityTraitNone),
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@"menuitem": @(UIAccessibilityTraitNone),
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@"progressbar": @(UIAccessibilityTraitNone),
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@"radio": @(UIAccessibilityTraitNone),
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@"radiogroup": @(UIAccessibilityTraitNone),
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@"scrollbar": @(UIAccessibilityTraitNone),
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@"spinbutton": @(UIAccessibilityTraitNone),
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@"switch": @(SwitchAccessibilityTrait),
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@"tab": @(UIAccessibilityTraitNone),
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@"tablist": @(UIAccessibilityTraitNone),
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@"timer": @(UIAccessibilityTraitNone),
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@"toolbar": @(UIAccessibilityTraitNone),
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}), UIAccessibilityTraitNone, unsignedLongLongValue)
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@end
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@implementation RCTViewManager
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@synthesize bridge = _bridge;
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RCT_EXPORT_MODULE()
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- (dispatch_queue_t)methodQueue
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{
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return RCTGetUIManagerQueue();
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}
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- (UIView *)view
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{
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#if TARGET_OS_TV
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return [RCTTVView new];
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#else
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return [RCTView new];
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#endif
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}
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- (RCTShadowView *)shadowView
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{
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return [RCTShadowView new];
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}
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- (NSArray<NSString *> *)customBubblingEventTypes
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{
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return @[
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// Generic events
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@"press",
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@"change",
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@"focus",
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@"blur",
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@"submitEditing",
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@"endEditing",
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@"keyPress",
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// Touch events
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@"touchStart",
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@"touchMove",
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@"touchCancel",
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@"touchEnd",
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];
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}
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#pragma mark - View properties
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#if TARGET_OS_TV
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// Apple TV properties
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RCT_EXPORT_VIEW_PROPERTY(isTVSelectable, BOOL)
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RCT_EXPORT_VIEW_PROPERTY(hasTVPreferredFocus, BOOL)
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RCT_EXPORT_VIEW_PROPERTY(tvParallaxProperties, NSDictionary)
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#endif
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// Acessibility related properties
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RCT_REMAP_VIEW_PROPERTY(accessible, reactAccessibilityElement.isAccessibilityElement, BOOL)
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RCT_REMAP_VIEW_PROPERTY(accessibilityActions, reactAccessibilityElement.accessibilityActions, NSArray<NSString *>)
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RCT_REMAP_VIEW_PROPERTY(accessibilityLabel, reactAccessibilityElement.accessibilityLabel, NSString)
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RCT_REMAP_VIEW_PROPERTY(accessibilityHint, reactAccessibilityElement.accessibilityHint, NSString)
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RCT_REMAP_VIEW_PROPERTY(accessibilityViewIsModal, reactAccessibilityElement.accessibilityViewIsModal, BOOL)
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RCT_REMAP_VIEW_PROPERTY(accessibilityElementsHidden, reactAccessibilityElement.accessibilityElementsHidden, BOOL)
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RCT_REMAP_VIEW_PROPERTY(accessibilityIgnoresInvertColors, reactAccessibilityElement.shouldAccessibilityIgnoresInvertColors, BOOL)
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RCT_REMAP_VIEW_PROPERTY(onAccessibilityAction, reactAccessibilityElement.onAccessibilityAction, RCTDirectEventBlock)
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RCT_REMAP_VIEW_PROPERTY(onAccessibilityTap, reactAccessibilityElement.onAccessibilityTap, RCTDirectEventBlock)
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RCT_REMAP_VIEW_PROPERTY(onMagicTap, reactAccessibilityElement.onMagicTap, RCTDirectEventBlock)
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RCT_REMAP_VIEW_PROPERTY(onAccessibilityEscape, reactAccessibilityElement.onAccessibilityEscape, RCTDirectEventBlock)
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RCT_REMAP_VIEW_PROPERTY(testID, reactAccessibilityElement.accessibilityIdentifier, NSString)
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RCT_EXPORT_VIEW_PROPERTY(backgroundColor, UIColor)
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RCT_REMAP_VIEW_PROPERTY(backfaceVisibility, layer.doubleSided, css_backface_visibility_t)
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RCT_REMAP_VIEW_PROPERTY(opacity, alpha, CGFloat)
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RCT_REMAP_VIEW_PROPERTY(shadowColor, layer.shadowColor, CGColor)
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RCT_REMAP_VIEW_PROPERTY(shadowOffset, layer.shadowOffset, CGSize)
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RCT_REMAP_VIEW_PROPERTY(shadowOpacity, layer.shadowOpacity, float)
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RCT_REMAP_VIEW_PROPERTY(shadowRadius, layer.shadowRadius, CGFloat)
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RCT_REMAP_VIEW_PROPERTY(needsOffscreenAlphaCompositing, layer.allowsGroupOpacity, BOOL)
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RCT_CUSTOM_VIEW_PROPERTY(overflow, YGOverflow, RCTView)
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{
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if (json) {
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view.clipsToBounds = [RCTConvert YGOverflow:json] != YGOverflowVisible;
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} else {
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view.clipsToBounds = defaultView.clipsToBounds;
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}
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}
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RCT_CUSTOM_VIEW_PROPERTY(shouldRasterizeIOS, BOOL, RCTView)
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{
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view.layer.shouldRasterize = json ? [RCTConvert BOOL:json] : defaultView.layer.shouldRasterize;
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view.layer.rasterizationScale = view.layer.shouldRasterize ? [UIScreen mainScreen].scale : defaultView.layer.rasterizationScale;
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}
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RCT_CUSTOM_VIEW_PROPERTY(transform, CATransform3D, RCTView)
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{
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view.layer.transform = json ? [RCTConvert CATransform3D:json] : defaultView.layer.transform;
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// Enable edge antialiasing in perspective transforms
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view.layer.allowsEdgeAntialiasing = !(view.layer.transform.m34 == 0.0f);
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}
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RCT_CUSTOM_VIEW_PROPERTY(accessibilityRole, UIAccessibilityTraits, RCTView)
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{
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const UIAccessibilityTraits AccessibilityRolesMask = UIAccessibilityTraitNone | UIAccessibilityTraitButton | UIAccessibilityTraitLink | UIAccessibilityTraitSearchField | UIAccessibilityTraitImage | UIAccessibilityTraitKeyboardKey | UIAccessibilityTraitStaticText | UIAccessibilityTraitAdjustable | UIAccessibilityTraitHeader | UIAccessibilityTraitSummaryElement | SwitchAccessibilityTrait;
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view.reactAccessibilityElement.accessibilityTraits = view.reactAccessibilityElement.accessibilityTraits & ~AccessibilityRolesMask;
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UIAccessibilityTraits newTraits = json ? [RCTConvert UIAccessibilityTraits:json] : defaultView.accessibilityTraits;
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if (newTraits != UIAccessibilityTraitNone) {
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UIAccessibilityTraits maskedTraits = newTraits & AccessibilityRolesMask;
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view.reactAccessibilityElement.accessibilityTraits |= maskedTraits;
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} else {
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NSString *role = json ? [RCTConvert NSString:json] : @"";
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((RCTView *)view.reactAccessibilityElement).accessibilityRole = role;
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}
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}
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RCT_CUSTOM_VIEW_PROPERTY(accessibilityStates, NSArray<NSString *>, RCTView)
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{
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NSArray<NSString *> *states = json ? [RCTConvert NSStringArray:json] : nil;
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NSMutableArray *newStates = [NSMutableArray new];
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if (!states) {
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return;
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}
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const UIAccessibilityTraits AccessibilityStatesMask = UIAccessibilityTraitNotEnabled | UIAccessibilityTraitSelected;
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view.reactAccessibilityElement.accessibilityTraits = view.reactAccessibilityElement.accessibilityTraits & ~AccessibilityStatesMask;
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for (NSString *state in states) {
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if ([state isEqualToString:@"selected"]) {
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view.reactAccessibilityElement.accessibilityTraits |= UIAccessibilityTraitSelected;
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} else if ([state isEqualToString:@"disabled"]) {
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view.reactAccessibilityElement.accessibilityTraits |= UIAccessibilityTraitNotEnabled;
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} else {
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[newStates addObject:state];
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}
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}
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if (newStates.count > 0) {
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((RCTView *)view.reactAccessibilityElement).accessibilityStates = newStates;
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} else {
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((RCTView *)view.reactAccessibilityElement).accessibilityStates = nil;
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}
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}
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RCT_CUSTOM_VIEW_PROPERTY(nativeID, NSString *, RCTView)
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{
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view.nativeID = json ? [RCTConvert NSString:json] : defaultView.nativeID;
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[_bridge.uiManager setNativeID:view.nativeID forView:view];
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}
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RCT_CUSTOM_VIEW_PROPERTY(pointerEvents, RCTPointerEvents, RCTView)
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{
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if ([view respondsToSelector:@selector(setPointerEvents:)]) {
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view.pointerEvents = json ? [RCTConvert RCTPointerEvents:json] : defaultView.pointerEvents;
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return;
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}
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if (!json) {
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view.userInteractionEnabled = defaultView.userInteractionEnabled;
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return;
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}
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switch ([RCTConvert RCTPointerEvents:json]) {
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case RCTPointerEventsUnspecified:
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// Pointer events "unspecified" acts as if a stylesheet had not specified,
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// which is different than "auto" in CSS (which cannot and will not be
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// supported in `React`. "auto" may override a parent's "none".
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// Unspecified values do not.
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// This wouldn't override a container view's `userInteractionEnabled = NO`
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view.userInteractionEnabled = YES;
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case RCTPointerEventsNone:
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view.userInteractionEnabled = NO;
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break;
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default:
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RCTLogError(@"UIView base class does not support pointerEvent value: %@", json);
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}
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}
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RCT_CUSTOM_VIEW_PROPERTY(removeClippedSubviews, BOOL, RCTView)
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{
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if ([view respondsToSelector:@selector(setRemoveClippedSubviews:)]) {
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view.removeClippedSubviews = json ? [RCTConvert BOOL:json] : defaultView.removeClippedSubviews;
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}
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}
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RCT_CUSTOM_VIEW_PROPERTY(borderRadius, CGFloat, RCTView) {
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if ([view respondsToSelector:@selector(setBorderRadius:)]) {
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view.borderRadius = json ? [RCTConvert CGFloat:json] : defaultView.borderRadius;
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} else {
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view.layer.cornerRadius = json ? [RCTConvert CGFloat:json] : defaultView.layer.cornerRadius;
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}
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}
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RCT_CUSTOM_VIEW_PROPERTY(borderColor, CGColor, RCTView)
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{
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if ([view respondsToSelector:@selector(setBorderColor:)]) {
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view.borderColor = json ? [RCTConvert CGColor:json] : defaultView.borderColor;
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} else {
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view.layer.borderColor = json ? [RCTConvert CGColor:json] : defaultView.layer.borderColor;
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}
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}
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RCT_CUSTOM_VIEW_PROPERTY(borderWidth, float, RCTView)
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{
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if ([view respondsToSelector:@selector(setBorderWidth:)]) {
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view.borderWidth = json ? [RCTConvert CGFloat:json] : defaultView.borderWidth;
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} else {
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view.layer.borderWidth = json ? [RCTConvert CGFloat:json] : defaultView.layer.borderWidth;
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}
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}
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RCT_CUSTOM_VIEW_PROPERTY(borderStyle, RCTBorderStyle, RCTView)
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{
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if ([view respondsToSelector:@selector(setBorderStyle:)]) {
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view.borderStyle = json ? [RCTConvert RCTBorderStyle:json] : defaultView.borderStyle;
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}
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}
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RCT_CUSTOM_VIEW_PROPERTY(hitSlop, UIEdgeInsets, RCTView)
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{
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if ([view respondsToSelector:@selector(setHitTestEdgeInsets:)]) {
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if (json) {
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UIEdgeInsets hitSlopInsets = [RCTConvert UIEdgeInsets:json];
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view.hitTestEdgeInsets = UIEdgeInsetsMake(-hitSlopInsets.top, -hitSlopInsets.left, -hitSlopInsets.bottom, -hitSlopInsets.right);
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} else {
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view.hitTestEdgeInsets = defaultView.hitTestEdgeInsets;
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}
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}
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}
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#define RCT_VIEW_BORDER_PROPERTY(SIDE) \
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RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Width, float, RCTView) \
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{ \
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if ([view respondsToSelector:@selector(setBorder##SIDE##Width:)]) { \
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view.border##SIDE##Width = json ? [RCTConvert CGFloat:json] : defaultView.border##SIDE##Width; \
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} \
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} \
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RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Color, UIColor, RCTView) \
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{ \
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if ([view respondsToSelector:@selector(setBorder##SIDE##Color:)]) { \
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view.border##SIDE##Color = json ? [RCTConvert CGColor:json] : defaultView.border##SIDE##Color; \
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} \
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}
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RCT_VIEW_BORDER_PROPERTY(Top)
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RCT_VIEW_BORDER_PROPERTY(Right)
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RCT_VIEW_BORDER_PROPERTY(Bottom)
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RCT_VIEW_BORDER_PROPERTY(Left)
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RCT_VIEW_BORDER_PROPERTY(Start)
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RCT_VIEW_BORDER_PROPERTY(End)
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#define RCT_VIEW_BORDER_RADIUS_PROPERTY(SIDE) \
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RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Radius, CGFloat, RCTView) \
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{ \
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if ([view respondsToSelector:@selector(setBorder##SIDE##Radius:)]) { \
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view.border##SIDE##Radius = json ? [RCTConvert CGFloat:json] : defaultView.border##SIDE##Radius; \
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} \
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} \
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RCT_VIEW_BORDER_RADIUS_PROPERTY(TopLeft)
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RCT_VIEW_BORDER_RADIUS_PROPERTY(TopRight)
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RCT_VIEW_BORDER_RADIUS_PROPERTY(TopStart)
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RCT_VIEW_BORDER_RADIUS_PROPERTY(TopEnd)
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RCT_VIEW_BORDER_RADIUS_PROPERTY(BottomLeft)
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RCT_VIEW_BORDER_RADIUS_PROPERTY(BottomRight)
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RCT_VIEW_BORDER_RADIUS_PROPERTY(BottomStart)
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RCT_VIEW_BORDER_RADIUS_PROPERTY(BottomEnd)
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RCT_REMAP_VIEW_PROPERTY(display, reactDisplay, YGDisplay)
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RCT_REMAP_VIEW_PROPERTY(zIndex, reactZIndex, NSInteger)
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#pragma mark - ShadowView properties
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RCT_EXPORT_SHADOW_PROPERTY(top, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(right, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(start, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(end, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(bottom, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(left, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(width, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(height, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(minWidth, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(maxWidth, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(minHeight, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(maxHeight, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(borderTopWidth, float)
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RCT_EXPORT_SHADOW_PROPERTY(borderRightWidth, float)
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RCT_EXPORT_SHADOW_PROPERTY(borderBottomWidth, float)
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RCT_EXPORT_SHADOW_PROPERTY(borderLeftWidth, float)
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RCT_EXPORT_SHADOW_PROPERTY(borderStartWidth, float)
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RCT_EXPORT_SHADOW_PROPERTY(borderEndWidth, float)
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RCT_EXPORT_SHADOW_PROPERTY(borderWidth, float)
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RCT_EXPORT_SHADOW_PROPERTY(marginTop, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(marginRight, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(marginBottom, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(marginLeft, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(marginStart, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(marginEnd, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(marginVertical, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(marginHorizontal, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(margin, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(paddingTop, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(paddingRight, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(paddingBottom, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(paddingLeft, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(paddingStart, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(paddingEnd, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(paddingVertical, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(paddingHorizontal, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(padding, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(flex, float)
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RCT_EXPORT_SHADOW_PROPERTY(flexGrow, float)
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RCT_EXPORT_SHADOW_PROPERTY(flexShrink, float)
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RCT_EXPORT_SHADOW_PROPERTY(flexBasis, YGValue)
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RCT_EXPORT_SHADOW_PROPERTY(flexDirection, YGFlexDirection)
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RCT_EXPORT_SHADOW_PROPERTY(flexWrap, YGWrap)
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RCT_EXPORT_SHADOW_PROPERTY(justifyContent, YGJustify)
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RCT_EXPORT_SHADOW_PROPERTY(alignItems, YGAlign)
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RCT_EXPORT_SHADOW_PROPERTY(alignSelf, YGAlign)
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RCT_EXPORT_SHADOW_PROPERTY(alignContent, YGAlign)
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RCT_EXPORT_SHADOW_PROPERTY(position, YGPositionType)
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RCT_EXPORT_SHADOW_PROPERTY(aspectRatio, float)
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RCT_EXPORT_SHADOW_PROPERTY(overflow, YGOverflow)
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RCT_EXPORT_SHADOW_PROPERTY(display, YGDisplay)
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RCT_EXPORT_SHADOW_PROPERTY(onLayout, RCTDirectEventBlock)
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RCT_EXPORT_SHADOW_PROPERTY(direction, YGDirection)
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@end
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