b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
28 lines
911 B
JavaScript
28 lines
911 B
JavaScript
// Preserve power transitions; coalesce brightness steps while hardware is busy.
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export class ScreenPower {
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constructor(state, apply) {
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this.state = state;
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this.apply = apply;
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this.pending = Promise.resolve();
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this.tail = null;
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}
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set(name, value) {
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if (name === 'screenBrightness' && this.tail?.name === name && !this.tail.started) {
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this.tail.value = value;
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return this.tail.promise;
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}
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const queued = {name, value, started:false};
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const operation = this.pending.then(async () => {
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queued.started = true;
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if (this.tail === queued) this.tail = null;
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const next = {...this.state, [name]:queued.value};
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await this.apply(next, name);
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Object.assign(this.state, next);
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return {...this.state};
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});
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queued.promise = operation;
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this.tail = queued;
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this.pending = operation.catch(() => {});
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return operation;
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}
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}
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