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Refine accessibility

This commit is contained in:
Zhiyuan Zheng
2021-04-09 21:43:12 +02:00
parent 9258f4b934
commit d4b28df091
57 changed files with 661 additions and 142 deletions

View File

@ -3,46 +3,60 @@ import { AccessibilityInfo } from 'react-native'
type ContextType = {
reduceMotionEnabled: boolean
screenReaderEnabled: boolean
}
const AccessibilityContext = createContext<ContextType>({
reduceMotionEnabled: false
reduceMotionEnabled: false,
screenReaderEnabled: false
})
export const useAccessibility = () => useContext(AccessibilityContext)
const AccessibilityManager: React.FC = ({ children }) => {
const [reduceMotionEnabled, setReduceMotionEnabled] = useState(false)
const [screenReaderEnabled, setScreenReaderEnabled] = useState(false)
const handleReduceMotionChanged = (reduceMotionEnabled: boolean) =>
setReduceMotionEnabled(reduceMotionEnabled)
const loadReduceMotion = async () => {
const handleScreenReaderEnabled = (screenReaderEnabled: boolean) =>
setScreenReaderEnabled(screenReaderEnabled)
const loadAccessibilityInfo = async () => {
const reduceMotion = await AccessibilityInfo.isReduceMotionEnabled()
const screenReader = await AccessibilityInfo.isScreenReaderEnabled()
setReduceMotionEnabled(reduceMotion)
setScreenReaderEnabled(screenReader)
}
useEffect(() => {
loadReduceMotion()
loadAccessibilityInfo()
AccessibilityInfo.addEventListener(
'reduceMotionChanged',
handleReduceMotionChanged
)
AccessibilityInfo.addEventListener(
'screenReaderChanged',
handleScreenReaderEnabled
)
return () => {
AccessibilityInfo.removeEventListener(
'reduceMotionChanged',
handleReduceMotionChanged
)
AccessibilityInfo.removeEventListener(
'screenReaderChanged',
handleScreenReaderEnabled
)
}
}, [])
return (
<AccessibilityContext.Provider
value={{
reduceMotionEnabled
}}
value={{ reduceMotionEnabled, screenReaderEnabled }}
>
{children}
</AccessibilityContext.Provider>