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Summary: This PR adds `isReduceMotionEnabled()` to `AccessibilityInfo` in other to add support for "reduce motion", exposing the Operational System's settings option. Additionally, it adds a new event, `reduceMotionChanged`, in order to listen for this flag's update. With this feature, developers will be able to disable or reduce animations, _**something that will be required as soon as WCAG 2.1 draft got approved**._ See [WCAG 2.1 — 2.3.3 Animations from Interaction criteria](https://knowbility.org/blog/2018/WCAG21-233Animations/) It's exposed by [`UIAccessibility`' isReduceMotionEnabled ](https://developer.apple.com/documentation/uikit/uiaccessibility/1615133-isreducemotionenabled ) on iOS and [Settings.Global.TRANSITION_ANIMATION_SCALE](https://developer.android.com/reference/android/provider/Settings.Global#TRANSITION_ANIMATION_SCALE) on Android. Up until now, `AccessibilityInfo` only exposes screen reader flag. By adding this second accessibility option, it's a good opportunity to rename `fetch` method to an appropriate name, `isScreenReaderEnabled`, as well as rename `change` event to `screenReaderChanged`, which will make it clearer and more specific. (In case it's approved, a follow-up PR could exposes [more iOS acessibility flags](https://developer.apple.com/documentation/uikit/uiaccessibility), such as `isShakeToUndoEnabled`, `isReduceTransparencyEnabled`, `isGrayscaleEnabled`, `isInvertColorsEnabled`) (iOS code inspired by [phonegap-mobile-accessibility](https://github.com/phonegap/phonegap-mobile-accessibility). And Android by [Flutter](https://github.com/flutter/engine/blob/master/shell/platform/android/io/flutter/view/AccessibilityBridge.java )) Pull Request resolved: https://github.com/facebook/react-native/pull/23839 Differential Revision: D14406227 Pulled By: hramos fbshipit-source-id: adf43be84c488522bf1e29d862681220ad193883
32 lines
901 B
Objective-C
32 lines
901 B
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 <Foundation/Foundation.h>
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#import <React/RCTBridge.h>
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#import <React/RCTBridgeModule.h>
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extern NSString *const RCTAccessibilityManagerDidUpdateMultiplierNotification; // posted when multiplier is changed
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@interface RCTAccessibilityManager : NSObject <RCTBridgeModule>
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@property (nonatomic, readonly) CGFloat multiplier;
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/// map from UIKit categories to multipliers
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@property (nonatomic, copy) NSDictionary<NSString *, NSNumber *> *multipliers;
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@property (nonatomic, assign) BOOL isReduceMotionEnabled;
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@property (nonatomic, assign) BOOL isVoiceOverEnabled;
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@end
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@interface RCTBridge (RCTAccessibilityManager)
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@property (nonatomic, readonly) RCTAccessibilityManager *accessibilityManager;
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@end
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