1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 | 1 1 1 1 1 6493 1 6493 1312 1 10 1 911 911 911 911 1 1 4449 4449 2419 2272 147 128 19 2030 2030 4449 4445 4 3 2 1 1 1 3 3 3 1 948 1 | import {Observer} from './Observer'; import {Operator} from './Operator'; import {Scheduler} from './Scheduler'; import {Subscriber} from './Subscriber'; import {Subscription} from './Subscription'; import {root} from './util/root'; import {CoreOperators} from './CoreOperators'; import {SymbolShim} from './util/SymbolShim'; import {GroupedObservable} from './operator/groupBy-support'; import {ConnectableObservable} from './observable/ConnectableObservable'; import {Subject} from './Subject'; import {Notification} from './Notification'; import {rxSubscriber} from'./symbol/rxSubscriber'; /** * A representation of any set of values over any amount of time. This the most basic building block * of RxJS. * * @class Observable<T> */ export class Observable<T> implements CoreOperators<T> { source: Observable<any>; operator: Operator<any, T>; _isScalar: boolean = false; /** * @constructor * @param {Function} subscribe the function that is * called when the Observable is initially subscribed to. This function is given a Subscriber, to which new values * can be `next`ed, or an `error` method can be called to raise an error, or `complete` can be called to notify * of a successful completion. */ constructor(subscribe?: <R>(subscriber: Subscriber<R>) => Subscription<T>|Function|void) { if (subscribe) { this._subscribe = subscribe; } } // HACK: Since TypeScript inherits static properties too, we have to // fight against TypeScript here so Subject can have a different static create signature /** * @static * @method create * @param {Function} subscribe? the subscriber function to be passed to the Observable constructor * @returns {Observable} a new cold observable * @description creates a new cold Observable by calling the Observable constructor */ static create: Function = <T>(subscribe?: <R>(subscriber: Subscriber<R>) => Subscription<T>|Function|void) => { return new Observable<T>(subscribe); }; /** * @method lift * @param {Operator} operator the operator defining the operation to take on the observable * @returns {Observable} a new observable with the Operator applied * @description creates a new Observable, with this Observable as the source, and the passed * operator defined as the new observable's operator. */ lift<T, R>(operator: Operator<T, R>): Observable<T> { const observable = new Observable(); observable.source = this; observable.operator = operator; return observable; } /** * @method Symbol.observable * @returns {Observable} this instance of the observable * @description an interop point defined by the es7-observable spec https://github.com/zenparsing/es-observable */ [SymbolShim.observable]() { return this; } /** * @method subscribe * @param {Observer|Function} observerOrNext (optional) either an observer defining all functions to be called, * or the first of three possible handlers, which is the handler for each value emitted from the observable. * @param {Function} error (optional) a handler for a terminal event resulting from an error. If no error handler is provided, * the error will be thrown as unhandled * @param {Function} complete (optional) a handler for a terminal event resulting from successful completion. * @returns {Subscription} a subscription reference to the registered handlers * @description registers handlers for handling emitted values, error and completions from the observable, and * executes the observable's subscriber function, which will take action to set up the underlying data stream */ subscribe(observerOrNext?: Observer<T> | ((value: T) => void), error?: (error: T) => void, complete?: () => void): Subscription<T> { let subscriber: Subscriber<T>; if (observerOrNext && typeof observerOrNext === 'object') { if (observerOrNext instanceof Subscriber) { subscriber = (<Subscriber<T>> observerOrNext); } else if (observerOrNext[rxSubscriber]) { subscriber = observerOrNext[rxSubscriber](); } else { subscriber = new Subscriber(<Observer<T>> observerOrNext); } } else { const next = <((x?) => void)> observerOrNext; subscriber = Subscriber.create(next, error, complete); } subscriber.add(this._subscribe(subscriber)); return subscriber; } /** * @method forEach * @param {Function} next a handler for each value emitted by the observable * @param {PromiseConstructor} PromiseCtor? a constructor function used to instantiate the Promise * @returns {Promise} a promise that either resolves on observable completion or * rejects with the handled error */ forEach(next: (value: T) => void, PromiseCtor?: PromiseConstructor): Promise<void> { if (!PromiseCtor) { if (root.Rx && root.Rx.config && root.Rx.config.Promise) { PromiseCtor = root.Rx.config.Promise; } else Eif (root.Promise) { PromiseCtor = root.Promise; } } Iif (!PromiseCtor) { throw new Error('no Promise impl found'); } return new PromiseCtor<void>((resolve, reject) => { this.subscribe(next, reject, resolve); }); } _subscribe(subscriber: Subscriber<any>): Subscription<T> | Function | void { return this.source._subscribe(this.operator.call(subscriber)); } // static method stubs static bindCallback: <T>(callbackFunc: Function, selector?: Function, scheduler?: Scheduler) => Function; static combineLatest: <T>(...observables: Array<Observable<any> | Array<Observable<any>> | ((...values: Array<any>) => T) | Scheduler>) => Observable<T>; static concat: <T>(...observables: Array<Observable<any> | Scheduler>) => Observable<T>; static defer: <T>(observableFactory: () => Observable<T>) => Observable<T>; static empty: <T>(scheduler?: Scheduler) => Observable<T>; static forkJoin: (...sources: Array<Observable<any> | Array<Observable<any>> | Promise<any> | ((...values: Array<any>) => any)>) => Observable<any>; static from: <T>(iterable: any, scheduler?: Scheduler) => Observable<T>; static fromArray: <T>(array: T[], scheduler?: Scheduler) => Observable<T>; static fromEvent: <T>(element: any, eventName: string, selector?: (...args: Array<any>) => T) => Observable<T>; static fromEventPattern: <T>(addHandler: (handler: Function) => void, removeHandler: (handler: Function) => void, selector?: (...args: Array<any>) => T) => Observable<T>; static fromPromise: <T>(promise: Promise<T>, scheduler?: Scheduler) => Observable<T>; static interval: (interval: number, scheduler?: Scheduler) => Observable<number>; static merge: <T>(...observables: Array<Observable<any> | Scheduler | number>) => Observable<T>; static never: <T>() => Observable<T>; static of: <T>(...values: Array<T | Scheduler>) => Observable<T>; static range: (start: number, end: number, scheduler?: Scheduler) => Observable<number>; static throw: <T>(error: T) => Observable<T>; static timer: (dueTime?: number | Date, period?: number | Scheduler, scheduler?: Scheduler) => Observable<number>; static zip: <T>(...observables: Array<Observable<any> | ((...values: Array<any>) => T)>) => Observable<T>; // core operators buffer: (closingNotifier: Observable<any>) => Observable<T[]>; bufferCount: (bufferSize: number, startBufferEvery: number) => Observable<T[]>; bufferTime: (bufferTimeSpan: number, bufferCreationInterval?: number, scheduler?: Scheduler) => Observable<T[]>; bufferToggle: <O>(openings: Observable<O>, closingSelector?: (openValue: O) => Observable<any>) => Observable<T[]>; bufferWhen: (closingSelector: () => Observable<any>) => Observable<T[]>; catch: (selector: (err: any, source: Observable<T>, caught: Observable<any>) => Observable<any>) => Observable<T>; combineAll: <R>(project?: (...values: Array<any>) => R) => Observable<R>; combineLatest: <R>(...observables: Array<Observable<any> | Array<Observable<any>> | ((...values: Array<any>) => R)>) => Observable<R>; concat: <R>(...observables: (Observable<any> | Scheduler)[]) => Observable<R>; concatAll: () => Observable<any>; concatMap: <R>(project: ((x: T, ix: number) => Observable<any>), projectResult?: (x: T, y: any, ix: number, iy: number) => R) => Observable<R>; concatMapTo: <R>(observable: Observable<any>, projectResult?: (x: T, y: any, ix: number, iy: number) => R) => Observable<R>; count: (predicate?: (value: T, index: number, source: Observable<T>) => boolean) => Observable<number>; dematerialize: () => Observable<any>; debounce: (durationSelector: (value: T) => Observable<any> | Promise<any>) => Observable<T>; debounceTime: <R>(dueTime: number, scheduler?: Scheduler) => Observable<R>; defaultIfEmpty: <R>(defaultValue?: T | R) => Observable<T> | Observable<R>; delay: (delay: number, scheduler?: Scheduler) => Observable<T>; distinctUntilChanged: (compare?: (x: T, y: T) => boolean) => Observable<T>; do: (next?: (x: T) => void, error?: (e: any) => void, complete?: () => void) => Observable<T>; expand: <R>(project: (x: T, ix: number) => Observable<R>, concurrent: number, scheduler: Scheduler) => Observable<R>; filter: (predicate: (x: T) => boolean, ix?: number, thisArg?: any) => Observable<T>; finally: (finallySelector: () => void) => Observable<T>; first: <R>(predicate?: (value: T, index: number, source: Observable<T>) => boolean, resultSelector?: (value: T, index: number) => R, thisArg?: any, defaultValue?: any) => Observable<T> | Observable<R>; flatMap: <R>(project: ((x: T, ix: number) => Observable<any>), projectResult?: (x: T, y: any, ix: number, iy: number) => R, concurrent?: number) => Observable<R>; flatMapTo: <R>(observable: Observable<any>, projectResult?: (x: T, y: any, ix: number, iy: number) => R, concurrent?: number) => Observable<R>; groupBy: <R>(keySelector: (value: T) => string, elementSelector?: (value: T) => R, durationSelector?: (group: GroupedObservable<R>) => Observable<any>) => Observable<GroupedObservable<R>>; ignoreElements: () => Observable<T>; last: <R>(predicate?: (value: T, index: number) => boolean, resultSelector?: (value: T, index: number) => R, thisArg?: any, defaultValue?: any) => Observable<T> | Observable<R>; every: (predicate: (value: T, index: number) => boolean, thisArg?: any) => Observable<T>; map: <R>(project: (x: T, ix?: number) => R, thisArg?: any) => Observable<R>; mapTo: <R>(value: R) => Observable<R>; materialize: () => Observable<Notification<T>>; merge: (...observables: any[]) => Observable<any>; mergeAll: (concurrent?: any) => Observable<any>; mergeMap: <R>(project: ((x: T, ix: number) => Observable<any>), projectResult?: (x: T, y: any, ix: number, iy: number) => R, concurrent?: number) => Observable<R>; mergeMapTo: <R>(observable: Observable<any>, projectResult?: (x: T, y: any, ix: number, iy: number) => R, concurrent?: number) => Observable<R>; multicast: (subjectOrSubjectFactory: Subject<T>|(() => Subject<T>)) => ConnectableObservable<T>; observeOn: (scheduler: Scheduler, delay?: number) => Observable<T>; partition: (predicate: (x: T) => boolean) => Observable<T>[]; publish: () => ConnectableObservable<T>; publishBehavior: (value: any) => ConnectableObservable<T>; publishReplay: (bufferSize?: number, windowTime?: number, scheduler?: Scheduler) => ConnectableObservable<T>; publishLast: () => ConnectableObservable<T>; reduce: <R>(project: (acc: R, x: T) => R, seed?: R) => Observable<R>; repeat: (count?: number) => Observable<T>; retry: (count?: number) => Observable<T>; retryWhen: (notifier: (errors: Observable<any>) => Observable<any>) => Observable<T>; sample: (notifier: Observable<any>) => Observable<T>; sampleTime: (delay: number, scheduler?: Scheduler) => Observable<T>; scan: <R>(accumulator: (acc: R, x: T) => R, seed?: T | R) => Observable<R>; share: () => Observable<T>; single: (predicate?: (value: T, index: number) => boolean, thisArg?: any) => Observable<T>; skip: (count: number) => Observable<T>; skipUntil: (notifier: Observable<any>) => Observable<T>; skipWhile: (predicate: (x: T, index: number) => boolean, thisArg?: any) => Observable<T>; startWith: (x: T) => Observable<T>; subscribeOn: (scheduler: Scheduler, delay?: number) => Observable<T>; switch: <R>() => Observable<R>; switchFirst: <T>() => Observable<T>; switchMap: <R>(project: ((x: T, ix: number) => Observable<any>), projectResult?: (x: T, y: any, ix: number, iy: number) => R) => Observable<R>; switchFirstMap: <T, R, R2>(project: (x: T, ix: number) => Observable<R>, rSelector?: (x: T, y: R, ix: number, iy: number) => R2) => Observable<R>; switchMapTo: <R>(observable: Observable<any>, projectResult?: (x: T, y: any, ix: number, iy: number) => R) => Observable<R>; take: (count: number) => Observable<T>; takeUntil: (notifier: Observable<any>) => Observable<T>; takeWhile: (predicate: (value: T, index: number) => boolean) => Observable<T>; throttle: (durationSelector: (value: T) => Observable<any> | Promise<any>) => Observable<T>; throttleTime: (delay: number, scheduler?: Scheduler) => Observable<T>; timeout: (due: number | Date, errorToSend?: any, scheduler?: Scheduler) => Observable<T>; timeoutWith: <R>(due: number | Date, withObservable: Observable<R>, scheduler?: Scheduler) => Observable<T> | Observable<R>; toArray: () => Observable<T[]>; toPromise: (PromiseCtor?: PromiseConstructor) => Promise<T>; window: (closingNotifier: Observable<any>) => Observable<Observable<T>>; windowCount: (windowSize: number, startWindowEvery: number) => Observable<Observable<T>>; windowTime: (windowTimeSpan: number, windowCreationInterval?: number, scheduler?: Scheduler) => Observable<Observable<T>>; windowToggle: <O>(openings: Observable<O>, closingSelector?: (openValue: O) => Observable<any>) => Observable<Observable<T>>; windowWhen: (closingSelector: () => Observable<any>) => Observable<Observable<T>>; withLatestFrom: <R>(...observables: Array<Observable<any> | ((...values: Array<any>) => R)>) => Observable<R>; zip: <R>(...observables: Array<Observable<any> | ((...values: Array<any>) => R)>) => Observable<R>; zipAll: <R>(project?: (...values: Array<any>) => R) => Observable<R>; } |