99 lines
3.6 KiB
JavaScript
99 lines
3.6 KiB
JavaScript
|
"use strict";
|
||
|
|
var __extends = (this && this.__extends) || function (d, b) {
|
||
|
|
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
|
||
|
|
function __() { this.constructor = d; }
|
||
|
|
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
|
||
|
|
};
|
||
|
|
var Observable_1 = require('../Observable');
|
||
|
|
var Subscriber_1 = require('../Subscriber');
|
||
|
|
var PromiseObservable_1 = require('./PromiseObservable');
|
||
|
|
var EmptyObservable_1 = require('./EmptyObservable');
|
||
|
|
var isPromise_1 = require('../util/isPromise');
|
||
|
|
var isArray_1 = require('../util/isArray');
|
||
|
|
var ForkJoinObservable = (function (_super) {
|
||
|
|
__extends(ForkJoinObservable, _super);
|
||
|
|
function ForkJoinObservable(sources, resultSelector) {
|
||
|
|
_super.call(this);
|
||
|
|
this.sources = sources;
|
||
|
|
this.resultSelector = resultSelector;
|
||
|
|
}
|
||
|
|
ForkJoinObservable.create = function () {
|
||
|
|
var sources = [];
|
||
|
|
for (var _i = 0; _i < arguments.length; _i++) {
|
||
|
|
sources[_i - 0] = arguments[_i];
|
||
|
|
}
|
||
|
|
if (sources === null || arguments.length === 0) {
|
||
|
|
return new EmptyObservable_1.EmptyObservable();
|
||
|
|
}
|
||
|
|
var resultSelector = null;
|
||
|
|
if (typeof sources[sources.length - 1] === 'function') {
|
||
|
|
resultSelector = sources.pop();
|
||
|
|
}
|
||
|
|
// if the first and only other argument besides the resultSelector is an array
|
||
|
|
// assume it's been called with `forkJoin([obs1, obs2, obs3], resultSelector)`
|
||
|
|
if (sources.length === 1 && isArray_1.isArray(sources[0])) {
|
||
|
|
sources = sources[0];
|
||
|
|
}
|
||
|
|
if (sources.length === 0) {
|
||
|
|
return new EmptyObservable_1.EmptyObservable();
|
||
|
|
}
|
||
|
|
return new ForkJoinObservable(sources, resultSelector);
|
||
|
|
};
|
||
|
|
ForkJoinObservable.prototype._subscribe = function (subscriber) {
|
||
|
|
var sources = this.sources;
|
||
|
|
var len = sources.length;
|
||
|
|
var context = { completed: 0, total: len, values: emptyArray(len), selector: this.resultSelector };
|
||
|
|
for (var i = 0; i < len; i++) {
|
||
|
|
var source = sources[i];
|
||
|
|
if (isPromise_1.isPromise(source)) {
|
||
|
|
source = new PromiseObservable_1.PromiseObservable(source);
|
||
|
|
}
|
||
|
|
source.subscribe(new AllSubscriber(subscriber, i, context));
|
||
|
|
}
|
||
|
|
};
|
||
|
|
return ForkJoinObservable;
|
||
|
|
}(Observable_1.Observable));
|
||
|
|
exports.ForkJoinObservable = ForkJoinObservable;
|
||
|
|
var AllSubscriber = (function (_super) {
|
||
|
|
__extends(AllSubscriber, _super);
|
||
|
|
function AllSubscriber(destination, index, context) {
|
||
|
|
_super.call(this, destination);
|
||
|
|
this.index = index;
|
||
|
|
this.context = context;
|
||
|
|
this._value = null;
|
||
|
|
}
|
||
|
|
AllSubscriber.prototype._next = function (value) {
|
||
|
|
this._value = value;
|
||
|
|
};
|
||
|
|
AllSubscriber.prototype._complete = function () {
|
||
|
|
var destination = this.destination;
|
||
|
|
if (this._value == null) {
|
||
|
|
destination.complete();
|
||
|
|
}
|
||
|
|
var context = this.context;
|
||
|
|
context.completed++;
|
||
|
|
context.values[this.index] = this._value;
|
||
|
|
var values = context.values;
|
||
|
|
if (context.completed !== values.length) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (values.every(hasValue)) {
|
||
|
|
var value = context.selector ? context.selector.apply(this, values) :
|
||
|
|
values;
|
||
|
|
destination.next(value);
|
||
|
|
}
|
||
|
|
destination.complete();
|
||
|
|
};
|
||
|
|
return AllSubscriber;
|
||
|
|
}(Subscriber_1.Subscriber));
|
||
|
|
function hasValue(x) {
|
||
|
|
return x !== null;
|
||
|
|
}
|
||
|
|
function emptyArray(len) {
|
||
|
|
var arr = [];
|
||
|
|
for (var i = 0; i < len; i++) {
|
||
|
|
arr.push(null);
|
||
|
|
}
|
||
|
|
return arr;
|
||
|
|
}
|
||
|
|
//# sourceMappingURL=ForkJoinObservable.js.map
|