102 lines
3.7 KiB
JavaScript
102 lines
3.7 KiB
JavaScript
|
/** PURE_IMPORTS_START tslib,_util_isScheduler,_util_isArray,_OuterSubscriber,_util_subscribeToResult,_fromArray PURE_IMPORTS_END */
|
||
|
|
import * as tslib_1 from "tslib";
|
||
|
|
import { isScheduler } from '../util/isScheduler';
|
||
|
|
import { isArray } from '../util/isArray';
|
||
|
|
import { OuterSubscriber } from '../OuterSubscriber';
|
||
|
|
import { subscribeToResult } from '../util/subscribeToResult';
|
||
|
|
import { fromArray } from './fromArray';
|
||
|
|
var NONE = {};
|
||
|
|
export function combineLatest() {
|
||
|
|
var observables = [];
|
||
|
|
for (var _i = 0; _i < arguments.length; _i++) {
|
||
|
|
observables[_i] = arguments[_i];
|
||
|
|
}
|
||
|
|
var resultSelector = null;
|
||
|
|
var scheduler = null;
|
||
|
|
if (isScheduler(observables[observables.length - 1])) {
|
||
|
|
scheduler = observables.pop();
|
||
|
|
}
|
||
|
|
if (typeof observables[observables.length - 1] === 'function') {
|
||
|
|
resultSelector = observables.pop();
|
||
|
|
}
|
||
|
|
if (observables.length === 1 && isArray(observables[0])) {
|
||
|
|
observables = observables[0];
|
||
|
|
}
|
||
|
|
return fromArray(observables, scheduler).lift(new CombineLatestOperator(resultSelector));
|
||
|
|
}
|
||
|
|
var CombineLatestOperator = /*@__PURE__*/ (function () {
|
||
|
|
function CombineLatestOperator(resultSelector) {
|
||
|
|
this.resultSelector = resultSelector;
|
||
|
|
}
|
||
|
|
CombineLatestOperator.prototype.call = function (subscriber, source) {
|
||
|
|
return source.subscribe(new CombineLatestSubscriber(subscriber, this.resultSelector));
|
||
|
|
};
|
||
|
|
return CombineLatestOperator;
|
||
|
|
}());
|
||
|
|
export { CombineLatestOperator };
|
||
|
|
var CombineLatestSubscriber = /*@__PURE__*/ (function (_super) {
|
||
|
|
tslib_1.__extends(CombineLatestSubscriber, _super);
|
||
|
|
function CombineLatestSubscriber(destination, resultSelector) {
|
||
|
|
var _this = _super.call(this, destination) || this;
|
||
|
|
_this.resultSelector = resultSelector;
|
||
|
|
_this.active = 0;
|
||
|
|
_this.values = [];
|
||
|
|
_this.observables = [];
|
||
|
|
return _this;
|
||
|
|
}
|
||
|
|
CombineLatestSubscriber.prototype._next = function (observable) {
|
||
|
|
this.values.push(NONE);
|
||
|
|
this.observables.push(observable);
|
||
|
|
};
|
||
|
|
CombineLatestSubscriber.prototype._complete = function () {
|
||
|
|
var observables = this.observables;
|
||
|
|
var len = observables.length;
|
||
|
|
if (len === 0) {
|
||
|
|
this.destination.complete();
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
this.active = len;
|
||
|
|
this.toRespond = len;
|
||
|
|
for (var i = 0; i < len; i++) {
|
||
|
|
var observable = observables[i];
|
||
|
|
this.add(subscribeToResult(this, observable, observable, i));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
CombineLatestSubscriber.prototype.notifyComplete = function (unused) {
|
||
|
|
if ((this.active -= 1) === 0) {
|
||
|
|
this.destination.complete();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
CombineLatestSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
|
||
|
|
var values = this.values;
|
||
|
|
var oldVal = values[outerIndex];
|
||
|
|
var toRespond = !this.toRespond
|
||
|
|
? 0
|
||
|
|
: oldVal === NONE ? --this.toRespond : this.toRespond;
|
||
|
|
values[outerIndex] = innerValue;
|
||
|
|
if (toRespond === 0) {
|
||
|
|
if (this.resultSelector) {
|
||
|
|
this._tryResultSelector(values);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
this.destination.next(values.slice());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
CombineLatestSubscriber.prototype._tryResultSelector = function (values) {
|
||
|
|
var result;
|
||
|
|
try {
|
||
|
|
result = this.resultSelector.apply(this, values);
|
||
|
|
}
|
||
|
|
catch (err) {
|
||
|
|
this.destination.error(err);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
this.destination.next(result);
|
||
|
|
};
|
||
|
|
return CombineLatestSubscriber;
|
||
|
|
}(OuterSubscriber));
|
||
|
|
export { CombineLatestSubscriber };
|
||
|
|
//# sourceMappingURL=combineLatest.js.map
|