42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
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import { Scheduler } from '../Scheduler';
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export class AsyncScheduler extends Scheduler {
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constructor() {
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super(...arguments);
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this.actions = [];
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/**
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* A flag to indicate whether the Scheduler is currently executing a batch of
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* queued actions.
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* @type {boolean}
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*/
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this.active = false;
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/**
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* An internal ID used to track the latest asynchronous task such as those
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* coming from `setTimeout`, `setInterval`, `requestAnimationFrame`, and
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* others.
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* @type {any}
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*/
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this.scheduled = undefined;
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}
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flush(action) {
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const { actions } = this;
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if (this.active) {
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actions.push(action);
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return;
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}
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let error;
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this.active = true;
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do {
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if (error = action.execute(action.state, action.delay)) {
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break;
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}
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} while (action = actions.shift()); // exhaust the scheduler queue
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this.active = false;
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if (error) {
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while (action = actions.shift()) {
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action.unsubscribe();
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}
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throw error;
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}
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}
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}
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//# sourceMappingURL=AsyncScheduler.js.map
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