85 lines
No EOL
2.8 KiB
JavaScript
85 lines
No EOL
2.8 KiB
JavaScript
import { Observable } from '../Observable';
|
|
import { AsyncSubject } from '../AsyncSubject';
|
|
import { map } from '../operators/map';
|
|
import { canReportError } from '../util/canReportError';
|
|
import { isArray } from '../util/isArray';
|
|
import { isScheduler } from '../util/isScheduler';
|
|
export function bindCallback(callbackFunc, resultSelector, scheduler) {
|
|
if (resultSelector) {
|
|
if (isScheduler(resultSelector)) {
|
|
scheduler = resultSelector;
|
|
}
|
|
else {
|
|
return (...args) => bindCallback(callbackFunc, scheduler)(...args).pipe(map((args) => isArray(args) ? resultSelector(...args) : resultSelector(args)));
|
|
}
|
|
}
|
|
return function (...args) {
|
|
const context = this;
|
|
let subject;
|
|
const params = {
|
|
context,
|
|
subject,
|
|
callbackFunc,
|
|
scheduler,
|
|
};
|
|
return new Observable(subscriber => {
|
|
if (!scheduler) {
|
|
if (!subject) {
|
|
subject = new AsyncSubject();
|
|
const handler = (...innerArgs) => {
|
|
subject.next(innerArgs.length <= 1 ? innerArgs[0] : innerArgs);
|
|
subject.complete();
|
|
};
|
|
try {
|
|
callbackFunc.apply(context, [...args, handler]);
|
|
}
|
|
catch (err) {
|
|
if (canReportError(subject)) {
|
|
subject.error(err);
|
|
}
|
|
else {
|
|
console.warn(err);
|
|
}
|
|
}
|
|
}
|
|
return subject.subscribe(subscriber);
|
|
}
|
|
else {
|
|
const state = {
|
|
args, subscriber, params,
|
|
};
|
|
return scheduler.schedule(dispatch, 0, state);
|
|
}
|
|
});
|
|
};
|
|
}
|
|
function dispatch(state) {
|
|
const self = this;
|
|
const { args, subscriber, params } = state;
|
|
const { callbackFunc, context, scheduler } = params;
|
|
let { subject } = params;
|
|
if (!subject) {
|
|
subject = params.subject = new AsyncSubject();
|
|
const handler = (...innerArgs) => {
|
|
const value = innerArgs.length <= 1 ? innerArgs[0] : innerArgs;
|
|
this.add(scheduler.schedule(dispatchNext, 0, { value, subject }));
|
|
};
|
|
try {
|
|
callbackFunc.apply(context, [...args, handler]);
|
|
}
|
|
catch (err) {
|
|
subject.error(err);
|
|
}
|
|
}
|
|
this.add(subject.subscribe(subscriber));
|
|
}
|
|
function dispatchNext(state) {
|
|
const { value, subject } = state;
|
|
subject.next(value);
|
|
subject.complete();
|
|
}
|
|
function dispatchError(state) {
|
|
const { err, subject } = state;
|
|
subject.error(err);
|
|
}
|
|
//# sourceMappingURL=bindCallback.js.map
|