1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
import React from 'react'
import type {MeasuredDimensions} from 'react-native-reanimated'
import {nanoid} from 'nanoid/non-secure'
import {useNonReactiveCallback} from '#/lib/hooks/useNonReactiveCallback'
import {ImageSource} from '#/view/com/lightbox/ImageViewing/@types'
export type Lightbox = {
id: string
images: ImageSource[]
thumbDims: MeasuredDimensions | null
index: number
}
const LightboxContext = React.createContext<{
activeLightbox: Lightbox | null
}>({
activeLightbox: null,
})
const LightboxControlContext = React.createContext<{
openLightbox: (lightbox: Omit<Lightbox, 'id'>) => void
closeLightbox: () => boolean
}>({
openLightbox: () => {},
closeLightbox: () => false,
})
export function Provider({children}: React.PropsWithChildren<{}>) {
const [activeLightbox, setActiveLightbox] = React.useState<Lightbox | null>(
null,
)
const openLightbox = useNonReactiveCallback(
(lightbox: Omit<Lightbox, 'id'>) => {
setActiveLightbox({...lightbox, id: nanoid()})
},
)
const closeLightbox = useNonReactiveCallback(() => {
let wasActive = !!activeLightbox
setActiveLightbox(null)
return wasActive
})
const state = React.useMemo(
() => ({
activeLightbox,
}),
[activeLightbox],
)
const methods = React.useMemo(
() => ({
openLightbox,
closeLightbox,
}),
[openLightbox, closeLightbox],
)
return (
<LightboxContext.Provider value={state}>
<LightboxControlContext.Provider value={methods}>
{children}
</LightboxControlContext.Provider>
</LightboxContext.Provider>
)
}
export function useLightbox() {
return React.useContext(LightboxContext)
}
export function useLightboxControls() {
return React.useContext(LightboxControlContext)
}
|
