36 lines
950 B
JavaScript
36 lines
950 B
JavaScript
|
import { Subject } from './Subject';
|
||
|
|
import { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';
|
||
|
|
/**
|
||
|
|
* @class BehaviorSubject<T>
|
||
|
|
*/
|
||
|
|
export class BehaviorSubject extends Subject {
|
||
|
|
constructor(_value) {
|
||
|
|
super();
|
||
|
|
this._value = _value;
|
||
|
|
}
|
||
|
|
get value() {
|
||
|
|
return this.getValue();
|
||
|
|
}
|
||
|
|
/** @deprecated internal use only */ _subscribe(subscriber) {
|
||
|
|
const subscription = super._subscribe(subscriber);
|
||
|
|
if (subscription && !subscription.closed) {
|
||
|
|
subscriber.next(this._value);
|
||
|
|
}
|
||
|
|
return subscription;
|
||
|
|
}
|
||
|
|
getValue() {
|
||
|
|
if (this.hasError) {
|
||
|
|
throw this.thrownError;
|
||
|
|
}
|
||
|
|
else if (this.closed) {
|
||
|
|
throw new ObjectUnsubscribedError();
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return this._value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
next(value) {
|
||
|
|
super.next(this._value = value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//# sourceMappingURL=BehaviorSubject.js.map
|