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Merge pull request #174 from adkenyon/useAccessibilityInfo-update
useAccessibilityInfo update
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,43 +1,66 @@ | ||
| import {useEffect, useState} from 'react' | ||
| import { | ||
| AccessibilityInfo, | ||
| AccessibilityChangeEvent, | ||
| AccessibilityEvent, | ||
| } from 'react-native' | ||
| import {AccessibilityInfo, AccessibilityChangeEventName} from 'react-native' | ||
|
|
||
| export function useAccessibilityInfo() { | ||
| const [reduceMotionEnabled, setReduceMotionEnabled] = useState(false) | ||
| const [screenReaderEnabled, setScreenReaderEnabled] = useState(false) | ||
| type AccessibilityInfoStaticInitializers = | ||
| | 'isBoldTextEnabled' | ||
| | 'isScreenReaderEnabled' | ||
| | 'isGrayscaleEnabled' | ||
| | 'isInvertColorsEnabled' | ||
| | 'isReduceMotionEnabled' | ||
| | 'isReduceTransparencyEnabled' | ||
|
|
||
| const handleReduceMotionChanged = (enabled: AccessibilityChangeEvent) => | ||
| setReduceMotionEnabled(enabled) | ||
| const handleScreenReaderChanged = (enabled: AccessibilityChangeEvent) => | ||
| setScreenReaderEnabled(enabled) | ||
| function useAccessibilityStateListener( | ||
| eventName: AccessibilityChangeEventName, | ||
| initializerName: AccessibilityInfoStaticInitializers, | ||
| ) { | ||
| const [isEnabled, setIsEnabled] = useState<boolean | undefined>(undefined) | ||
|
|
||
| useEffect(() => { | ||
| AccessibilityInfo.isReduceMotionEnabled().then(handleReduceMotionChanged) | ||
| AccessibilityInfo.isScreenReaderEnabled().then(handleScreenReaderChanged) | ||
|
|
||
| AccessibilityInfo.addEventListener( | ||
| 'reduceMotionChanged', | ||
| handleReduceMotionChanged as (event: AccessibilityEvent) => void, | ||
| ) | ||
| AccessibilityInfo.addEventListener( | ||
| 'screenReaderChanged', | ||
| handleScreenReaderChanged as (event: AccessibilityEvent) => void, | ||
| ) | ||
|
|
||
| return () => { | ||
| AccessibilityInfo.removeEventListener( | ||
| 'reduceMotionChanged', | ||
| handleReduceMotionChanged as (event: AccessibilityEvent) => void, | ||
| ) | ||
| AccessibilityInfo.removeEventListener( | ||
| 'screenReaderChanged', | ||
| handleScreenReaderChanged as (event: AccessibilityEvent) => void, | ||
| ) | ||
| if (!AccessibilityInfo[initializerName]) { | ||
| return | ||
| } | ||
| }, []) | ||
|
|
||
| return {reduceMotionEnabled, screenReaderEnabled} | ||
| AccessibilityInfo[initializerName]().then(setIsEnabled) | ||
| AccessibilityInfo.addEventListener(eventName, setIsEnabled) | ||
|
|
||
| return () => AccessibilityInfo.removeEventListener(eventName, setIsEnabled) | ||
| }, [eventName, initializerName]) | ||
|
|
||
| return isEnabled | ||
| } | ||
|
|
||
| export function useAccessibilityInfo() { | ||
| const boldTextEnabled = useAccessibilityStateListener( | ||
| 'boldTextChanged', | ||
| 'isBoldTextEnabled', | ||
| ) | ||
| const grayscaleEnabled = useAccessibilityStateListener( | ||
| 'grayscaleChanged', | ||
| 'isGrayscaleEnabled', | ||
| ) | ||
| const invertColorsEnabled = useAccessibilityStateListener( | ||
| 'invertColorsChanged', | ||
| 'isInvertColorsEnabled', | ||
| ) | ||
| const reduceMotionEnabled = useAccessibilityStateListener( | ||
| 'reduceMotionChanged', | ||
| 'isReduceMotionEnabled', | ||
| ) | ||
| const reduceTransparencyEnabled = useAccessibilityStateListener( | ||
| 'reduceTransparencyChanged', | ||
| 'isReduceTransparencyEnabled', | ||
| ) | ||
| const screenReaderEnabled = useAccessibilityStateListener( | ||
| 'screenReaderChanged', | ||
| 'isScreenReaderEnabled', | ||
| ) | ||
|
|
||
| return { | ||
| screenReaderEnabled, | ||
| grayscaleEnabled, | ||
| invertColorsEnabled, | ||
| reduceMotionEnabled, | ||
| reduceTransparencyEnabled, | ||
| boldTextEnabled, | ||
| } | ||
| } |
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