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Contents
import { Observable } from '../Observable';
import { subscribeToResult } from '../util/subscribeToResult';
import { OuterSubscriber } from '../OuterSubscriber';
/**
* We need this JSDoc comment for affecting ESDoc.
* @extends {Ignored}
* @hide true
*/
export class IfObservable extends Observable {
constructor(condition, thenSource, elseSource) {
super();
this.condition = condition;
this.thenSource = thenSource;
this.elseSource = elseSource;
}
static create(condition, thenSource, elseSource) {
return new IfObservable(condition, thenSource, elseSource);
}
/** @deprecated internal use only */ _subscribe(subscriber) {
const { condition, thenSource, elseSource } = this;
return new IfSubscriber(subscriber, condition, thenSource, elseSource);
}
}
class IfSubscriber extends OuterSubscriber {
constructor(destination, condition, thenSource, elseSource) {
super(destination);
this.condition = condition;
this.thenSource = thenSource;
this.elseSource = elseSource;
this.tryIf();
}
tryIf() {
const { condition, thenSource, elseSource } = this;
let result;
try {
result = condition();
const source = result ? thenSource : elseSource;
if (source) {
this.add(subscribeToResult(this, source));
}
else {
this._complete();
}
}
catch (err) {
this._error(err);
}
}
}
//# sourceMappingURL=IfObservable.js.map
Version data entries
49 entries across 49 versions & 4 rubygems