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perf(tui): defer local input render during echo

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This commit is contained in:
Brooklyn Nicholson 2026-04-26 03:38:56 -05:00
parent ee7ef33b02
commit cd7c5e5606
1 changed files with 32 additions and 4 deletions
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36
ui-tui/src/components/textInput.tsx
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@ -307,6 +307,7 @@ export function TextInput({
const editVersionRef = useRef(0) const editVersionRef = useRef(0)
const parentChangeTimer = useRef<ReturnType<typeof setTimeout> | null>(null) const parentChangeTimer = useRef<ReturnType<typeof setTimeout> | null>(null)
const pendingParentValue = useRef<string | null>(null) const pendingParentValue = useRef<string | null>(null)
const localRenderTimer = useRef<ReturnType<typeof setTimeout> | null>(null)
const lineWidthRef = useRef(stringWidth(value.includes('\n') ? value.slice(value.lastIndexOf('\n') + 1) : value)) const lineWidthRef = useRef(stringWidth(value.includes('\n') ? value.slice(value.lastIndexOf('\n') + 1) : value))
const undo = useRef<{ cursor: number; value: string }[]>([]) const undo = useRef<{ cursor: number; value: string }[]>([])
const redo = useRef<{ cursor: number; value: string }[]>([]) const redo = useRef<{ cursor: number; value: string }[]>([])
@ -395,6 +396,10 @@ export function TextInput({
if (parentChangeTimer.current) { if (parentChangeTimer.current) {
clearTimeout(parentChangeTimer.current) clearTimeout(parentChangeTimer.current)
} }
if (localRenderTimer.current) {
clearTimeout(localRenderTimer.current)
}
}, },
[] []
) )
@ -424,6 +429,23 @@ export function TextInput({
parentChangeTimer.current = setTimeout(flushParentChange, 16) parentChangeTimer.current = setTimeout(flushParentChange, 16)
} }
const flushLocalRender = () => {
if (localRenderTimer.current) {
clearTimeout(localRenderTimer.current)
localRenderTimer.current = null
}
setCur(curRef.current)
}
const scheduleLocalRender = () => {
if (localRenderTimer.current) {
return
}
localRenderTimer.current = setTimeout(flushLocalRender, 16)
}
const canFastEchoBase = () => focus && termFocus && !selected && !mask && !!stdout?.isTTY const canFastEchoBase = () => focus && termFocus && !selected && !mask && !!stdout?.isTTY
const canFastAppend = (current: string, cursor: number, text: string) => { const canFastAppend = (current: string, cursor: number, text: string) => {
@ -449,7 +471,7 @@ export function TextInput({
return !!prev && stringWidth(prev) === 1 return !!prev && stringWidth(prev) === 1
} }
const commit = (next: string, nextCur: number, track = true, syncParent = true) => { const commit = (next: string, nextCur: number, track = true, syncParent = true, syncLocal = true) => {
const prev = vRef.current const prev = vRef.current
const c = snapPos(next, nextCur) const c = snapPos(next, nextCur)
editVersionRef.current += 1 editVersionRef.current += 1
@ -469,7 +491,13 @@ export function TextInput({
redo.current = [] redo.current = []
} }
setCur(c) if (syncLocal) {
flushLocalRender()
setCur(c)
} else {
scheduleLocalRender()
}
curRef.current = c curRef.current = c
vRef.current = next vRef.current = next
lineWidthRef.current = stringWidth(next.includes('\n') ? next.slice(next.lastIndexOf('\n') + 1) : next) lineWidthRef.current = stringWidth(next.includes('\n') ? next.slice(next.lastIndexOf('\n') + 1) : next)
@ -739,7 +767,7 @@ export function TextInput({
v = v.slice(0, t) + v.slice(c) v = v.slice(0, t) + v.slice(c)
c = t c = t
stdout!.write('\b \b') stdout!.write('\b \b')
commit(v, c, true, false) commit(v, c, true, false, false)
return return
} else { } else {
@ -826,7 +854,7 @@ export function TextInput({
if (simpleAppend) { if (simpleAppend) {
stdout!.write(text) stdout!.write(text)
commit(v, c, true, false) commit(v, c, true, false, false)
return return
} }