85 lines
2.8 KiB
JavaScript
85 lines
2.8 KiB
JavaScript
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import { Observable } from '../Observable';
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import { AsyncSubject } from '../AsyncSubject';
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import { map } from '../operators/map';
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import { canReportError } from '../util/canReportError';
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import { isArray } from '../util/isArray';
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import { isScheduler } from '../util/isScheduler';
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export function bindCallback(callbackFunc, resultSelector, scheduler) {
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if (resultSelector) {
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if (isScheduler(resultSelector)) {
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scheduler = resultSelector;
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}
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else {
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return (...args) => bindCallback(callbackFunc, scheduler)(...args).pipe(map((args) => isArray(args) ? resultSelector(...args) : resultSelector(args)));
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}
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}
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return function (...args) {
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const context = this;
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let subject;
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const params = {
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context,
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subject,
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callbackFunc,
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scheduler,
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};
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return new Observable(subscriber => {
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if (!scheduler) {
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if (!subject) {
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subject = new AsyncSubject();
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const handler = (...innerArgs) => {
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subject.next(innerArgs.length <= 1 ? innerArgs[0] : innerArgs);
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subject.complete();
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};
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try {
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callbackFunc.apply(context, [...args, handler]);
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}
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catch (err) {
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if (canReportError(subject)) {
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subject.error(err);
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}
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else {
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console.warn(err);
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}
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}
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}
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return subject.subscribe(subscriber);
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}
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else {
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const state = {
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args, subscriber, params,
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};
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return scheduler.schedule(dispatch, 0, state);
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}
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});
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};
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}
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function dispatch(state) {
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const self = this;
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const { args, subscriber, params } = state;
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const { callbackFunc, context, scheduler } = params;
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let { subject } = params;
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if (!subject) {
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subject = params.subject = new AsyncSubject();
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const handler = (...innerArgs) => {
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const value = innerArgs.length <= 1 ? innerArgs[0] : innerArgs;
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this.add(scheduler.schedule(dispatchNext, 0, { value, subject }));
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};
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try {
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callbackFunc.apply(context, [...args, handler]);
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}
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catch (err) {
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subject.error(err);
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}
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}
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this.add(subject.subscribe(subscriber));
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}
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function dispatchNext(state) {
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const { value, subject } = state;
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subject.next(value);
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subject.complete();
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}
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function dispatchError(state) {
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const { err, subject } = state;
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subject.error(err);
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}
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//# sourceMappingURL=bindCallback.js.map
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