Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | 1x 1x 1x 6x 6x 6x 3x 3x 3x 3x 6x 6x 6x 1x 3x 3x 3x 3x 3x 3x 3x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 2x 2x 3x 3x 3x 3x 3x 3x 3x 3x | import { useCallback, useEffect, useLayoutEffect, useRef, useState } from "react"
import { detectMetaKeyChar, detectOS, unknown } from "./platformUtils"
export const useMetaKeyDetection = (platform: string) => {
const [metaKeyChar, setMetaKeyChar] = useState(unknown)
const [os, setOs] = useState(unknown)
useEffect(() => {
const detectedMetaKeyChar = detectMetaKeyChar(platform)
const detectedOs = detectOS(platform)
setMetaKeyChar(detectedMetaKeyChar)
setOs(detectedOs)
}, [platform])
return [os, metaKeyChar]
}
export const useShortcut = (shortcut: string, callback: (...args: unknown[]) => void, options = { disableTextInputs: true }) => {
const callbackRef = useRef(callback)
const [keyCombo, setKeyCombo] = useState<string[]>([])
useLayoutEffect(() => {
callbackRef.current = callback
})
const handleKeyDown = useCallback(
(event: KeyboardEvent) => {
const isTextInput =
event.target instanceof HTMLTextAreaElement ||
(event.target instanceof HTMLInputElement && (!event.target.type || event.target.type === "text")) ||
(event.target as HTMLElement).isContentEditable
const modifierMap: { [key: string]: boolean } = {
Control: event.ctrlKey,
Alt: event.altKey,
Meta: event.metaKey, // alias for Command
Shift: event.shiftKey,
}
if (event.repeat) {
return null
}
if (options.disableTextInputs && isTextInput) {
return event.stopPropagation()
}
if (shortcut.includes("+")) {
const keyArray = shortcut.split("+")
if (Object.keys(modifierMap).includes(keyArray[0])) {
const finalKey = keyArray.pop()
if (!finalKey) {
return
}
if (keyArray.every((k) => modifierMap[k]) && finalKey.toLowerCase() === event.key.toLowerCase()) {
event.preventDefault()
return callbackRef.current(event)
}
} else {
if (keyArray[keyCombo.length] === event.key) {
if (keyArray[keyArray.length - 1] === event.key && keyCombo.length === keyArray.length - 1) {
callbackRef.current(event)
return setKeyCombo([])
}
return setKeyCombo((prevCombo) => [...prevCombo, event.key])
}
if (keyCombo.length > 0) {
return setKeyCombo([])
}
}
}
if (shortcut === event.key) {
return callbackRef.current(event)
}
},
[keyCombo.length, options.disableTextInputs, shortcut],
)
useEffect(() => {
window.addEventListener("keydown", handleKeyDown)
return () => {
window.removeEventListener("keydown", handleKeyDown)
}
}, [handleKeyDown])
}
|