| import { Observable } from '../Observable'; |
| function dispatch(state) { |
| const { obj, keys, length, index, subscriber } = state; |
| if (index === length) { |
| subscriber.complete(); |
| return; |
| } |
| const key = keys[index]; |
| subscriber.next([key, obj[key]]); |
| state.index = index + 1; |
| this.schedule(state); |
| } |
| /** |
| * We need this JSDoc comment for affecting ESDoc. |
| * @extends {Ignored} |
| * @hide true |
| */ |
| export class PairsObservable extends Observable { |
| constructor(obj, scheduler) { |
| super(); |
| this.obj = obj; |
| this.scheduler = scheduler; |
| this.keys = Object.keys(obj); |
| } |
| /** |
| * Convert an object into an observable sequence of [key, value] pairs |
| * using an optional IScheduler to enumerate the object. |
| * |
| * @example <caption>Converts a javascript object to an Observable</caption> |
| * var obj = { |
| * foo: 42, |
| * bar: 56, |
| * baz: 78 |
| * }; |
| * |
| * var source = Rx.Observable.pairs(obj); |
| * |
| * var subscription = source.subscribe( |
| * function (x) { |
| * console.log('Next: %s', x); |
| * }, |
| * function (err) { |
| * console.log('Error: %s', err); |
| * }, |
| * function () { |
| * console.log('Completed'); |
| * }); |
| * |
| * @param {Object} obj The object to inspect and turn into an |
| * Observable sequence. |
| * @param {Scheduler} [scheduler] An optional IScheduler to run the |
| * enumeration of the input sequence on. |
| * @returns {(Observable<Array<string | T>>)} An observable sequence of |
| * [key, value] pairs from the object. |
| */ |
| static create(obj, scheduler) { |
| return new PairsObservable(obj, scheduler); |
| } |
| _subscribe(subscriber) { |
| const { keys, scheduler } = this; |
| const length = keys.length; |
| if (scheduler) { |
| return scheduler.schedule(dispatch, 0, { |
| obj: this.obj, keys, length, index: 0, subscriber |
| }); |
| } |
| else { |
| for (let idx = 0; idx < length; idx++) { |
| const key = keys[idx]; |
| subscriber.next([key, this.obj[key]]); |
| } |
| subscriber.complete(); |
| } |
| } |
| } |
| //# sourceMappingURL=PairsObservable.js.map |