import {Scheduler} from '../Scheduler';
import {Subscriber} from '../Subscriber';
import {Subscription} from '../Subscription';
import {Observable} from '../Observable';
import {asap} from '../scheduler/asap';
import {isNumeric} from '../util/isNumeric';
export class SubscribeOnObservable<T> extends Observable<T> {
static create<T>(source: Observable<T>, Edelay: number = 0, Escheduler: Scheduler = asap): Observable<T> {
return new SubscribeOnObservable(source, delay, scheduler);
}
static dispatch<T>({ source, subscriber }): Subscription {
return source.subscribe(subscriber);
}
constructor(public source: Observable<T>,
private delayTime: number = 0,
private scheduler: Scheduler = asap) {
super();
if (!isNumeric(delayTime) || delayTime < 0) {
this.delayTime = 0;
}
if (!scheduler || typeof scheduler.schedule !== 'function') {
this.scheduler = asap;
}
}
protected _subscribe(subscriber: Subscriber<T>) {
const delay = this.delayTime;
const source = this.source;
const scheduler = this.scheduler;
return scheduler.schedule(SubscribeOnObservable.dispatch, delay, {
source, subscriber
});
}
}
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