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064bfd6 | 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 | // Terminal focus state signal — non-React access to DECSET 1004 focus events.
// 'unknown' is the default for terminals that don't support focus reporting;
// consumers treat 'unknown' identically to 'focused' (no throttling).
// Subscribers are notified synchronously when focus changes, used by
// TerminalFocusProvider to avoid polling.
export type TerminalFocusState = 'focused' | 'blurred' | 'unknown'
let focusState: TerminalFocusState = 'unknown'
const resolvers: Set<() => void> = new Set()
const subscribers: Set<() => void> = new Set()
export function setTerminalFocused(v: boolean): void {
focusState = v ? 'focused' : 'blurred'
// Notify useSyncExternalStore subscribers
for (const cb of subscribers) {
cb()
}
if (!v) {
for (const resolve of resolvers) {
resolve()
}
resolvers.clear()
}
}
export function getTerminalFocused(): boolean {
return focusState !== 'blurred'
}
export function getTerminalFocusState(): TerminalFocusState {
return focusState
}
// For useSyncExternalStore
export function subscribeTerminalFocus(cb: () => void): () => void {
subscribers.add(cb)
return () => {
subscribers.delete(cb)
}
}
export function resetTerminalFocusState(): void {
focusState = 'unknown'
for (const cb of subscribers) {
cb()
}
}
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