73 lines
2.3 KiB
JavaScript
73 lines
2.3 KiB
JavaScript
|
import { empty } from './observable/empty';
|
||
|
|
import { of } from './observable/of';
|
||
|
|
import { throwError } from './observable/throwError';
|
||
|
|
export var NotificationKind;
|
||
|
|
(function (NotificationKind) {
|
||
|
|
NotificationKind["NEXT"] = "N";
|
||
|
|
NotificationKind["ERROR"] = "E";
|
||
|
|
NotificationKind["COMPLETE"] = "C";
|
||
|
|
})(NotificationKind || (NotificationKind = {}));
|
||
|
|
export class Notification {
|
||
|
|
constructor(kind, value, error) {
|
||
|
|
this.kind = kind;
|
||
|
|
this.value = value;
|
||
|
|
this.error = error;
|
||
|
|
this.hasValue = kind === 'N';
|
||
|
|
}
|
||
|
|
observe(observer) {
|
||
|
|
switch (this.kind) {
|
||
|
|
case 'N':
|
||
|
|
return observer.next && observer.next(this.value);
|
||
|
|
case 'E':
|
||
|
|
return observer.error && observer.error(this.error);
|
||
|
|
case 'C':
|
||
|
|
return observer.complete && observer.complete();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
do(next, error, complete) {
|
||
|
|
const kind = this.kind;
|
||
|
|
switch (kind) {
|
||
|
|
case 'N':
|
||
|
|
return next && next(this.value);
|
||
|
|
case 'E':
|
||
|
|
return error && error(this.error);
|
||
|
|
case 'C':
|
||
|
|
return complete && complete();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
accept(nextOrObserver, error, complete) {
|
||
|
|
if (nextOrObserver && typeof nextOrObserver.next === 'function') {
|
||
|
|
return this.observe(nextOrObserver);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return this.do(nextOrObserver, error, complete);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
toObservable() {
|
||
|
|
const kind = this.kind;
|
||
|
|
switch (kind) {
|
||
|
|
case 'N':
|
||
|
|
return of(this.value);
|
||
|
|
case 'E':
|
||
|
|
return throwError(this.error);
|
||
|
|
case 'C':
|
||
|
|
return empty();
|
||
|
|
}
|
||
|
|
throw new Error('unexpected notification kind value');
|
||
|
|
}
|
||
|
|
static createNext(value) {
|
||
|
|
if (typeof value !== 'undefined') {
|
||
|
|
return new Notification('N', value);
|
||
|
|
}
|
||
|
|
return Notification.undefinedValueNotification;
|
||
|
|
}
|
||
|
|
static createError(err) {
|
||
|
|
return new Notification('E', undefined, err);
|
||
|
|
}
|
||
|
|
static createComplete() {
|
||
|
|
return Notification.completeNotification;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Notification.completeNotification = new Notification('C');
|
||
|
|
Notification.undefinedValueNotification = new Notification('N', undefined);
|
||
|
|
//# sourceMappingURL=Notification.js.map
|