File size: 4,162 Bytes
eb1202c | 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 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 | const editableSelector = "input, textarea, select, [contenteditable=''], [contenteditable='true']"
export function handleDocumentSearchKeydown(
input: HTMLInputElement | undefined,
event: KeyboardEvent,
inputValue: string,
setInputValue: (value: string) => void,
) {
if (!input) return false
if (event.defaultPrevented || event.isComposing) return false
if (event.target === input) return false
if (event.target instanceof Element && event.target.closest(editableSelector)) return false
const action = searchKeyAction(event)
if (!action) return false
event.preventDefault()
event.stopPropagation()
input.focus()
const start = input.selectionStart ?? inputValue.length
const end = input.selectionEnd ?? inputValue.length
if (action.type === "selectAll") {
input.setSelectionRange(0, inputValue.length)
return true
}
if (action.type === "move") {
moveSelection(input, inputValue, action.delta, event.shiftKey)
return true
}
if (action.type === "home") {
setBoundarySelection(input, start, 0, event.shiftKey)
return true
}
if (action.type === "end") {
setBoundarySelection(input, start, inputValue.length, event.shiftKey)
return true
}
if (action.type === "deleteBackward") {
if (start !== end)
return updateValue(input, inputValue.slice(0, start) + inputValue.slice(end), start, setInputValue)
if (start === 0) return true
return updateValue(input, inputValue.slice(0, start - 1) + inputValue.slice(end), start - 1, setInputValue)
}
if (action.type === "deleteForward") {
if (start !== end)
return updateValue(input, inputValue.slice(0, start) + inputValue.slice(end), start, setInputValue)
if (end === inputValue.length) return true
return updateValue(input, inputValue.slice(0, start) + inputValue.slice(end + 1), start, setInputValue)
}
return updateValue(
input,
inputValue.slice(0, start) + action.value + inputValue.slice(end),
start + action.value.length,
setInputValue,
)
}
function searchKeyAction(event: KeyboardEvent) {
if ((event.ctrlKey || event.metaKey) && !event.altKey && event.key.toLowerCase() === "a") {
return { type: "selectAll" } as const
}
if (event.ctrlKey || event.metaKey || event.altKey) return undefined
if (event.key.length === 1) return { type: "insert", value: event.key } as const
if (event.key === "Backspace") return { type: "deleteBackward" } as const
if (event.key === "Delete") return { type: "deleteForward" } as const
if (event.key === "ArrowLeft") return { type: "move", delta: -1 } as const
if (event.key === "ArrowRight") return { type: "move", delta: 1 } as const
if (event.key === "Home") return { type: "home" } as const
if (event.key === "End") return { type: "end" } as const
return undefined
}
function moveSelection(input: HTMLInputElement, inputValue: string, delta: -1 | 1, extend: boolean) {
const start = input.selectionStart ?? inputValue.length
const end = input.selectionEnd ?? inputValue.length
if (!extend && start !== end) {
const caret = delta < 0 ? start : end
input.setSelectionRange(caret, caret)
return
}
if (!extend) {
const caret = Math.max(0, Math.min(inputValue.length, start + delta))
input.setSelectionRange(caret, caret)
return
}
const backward = input.selectionDirection === "backward"
const anchor = backward ? end : start
const focus = backward ? start : end
const next = Math.max(0, Math.min(inputValue.length, focus + delta))
input.setSelectionRange(Math.min(anchor, next), Math.max(anchor, next), next < anchor ? "backward" : "forward")
}
function setBoundarySelection(input: HTMLInputElement, anchor: number, focus: number, extend: boolean) {
if (!extend) {
input.setSelectionRange(focus, focus)
return
}
input.setSelectionRange(Math.min(anchor, focus), Math.max(anchor, focus), focus < anchor ? "backward" : "forward")
}
function updateValue(input: HTMLInputElement, value: string, caret: number, setInputValue: (value: string) => void) {
input.value = value
setInputValue(value)
input.setSelectionRange(caret, caret)
return true
}
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