533 lines
18 KiB
JavaScript
533 lines
18 KiB
JavaScript
|
// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
|
||
|
|
|
||
|
|
;(function (factory) {
|
||
|
|
var objectTypes = {
|
||
|
|
'function': true,
|
||
|
|
'object': true
|
||
|
|
};
|
||
|
|
|
||
|
|
function checkGlobal(value) {
|
||
|
|
return (value && value.Object === Object) ? value : null;
|
||
|
|
}
|
||
|
|
|
||
|
|
var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
|
||
|
|
var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
|
||
|
|
var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
|
||
|
|
var freeSelf = checkGlobal(objectTypes[typeof self] && self);
|
||
|
|
var freeWindow = checkGlobal(objectTypes[typeof window] && window);
|
||
|
|
var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
|
||
|
|
var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
|
||
|
|
var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
|
||
|
|
|
||
|
|
// Because of build optimizers
|
||
|
|
if (typeof define === 'function' && define.amd) {
|
||
|
|
define(['./rx.binding', 'exports'], function (Rx, exports) {
|
||
|
|
root.Rx = factory(root, exports, Rx);
|
||
|
|
return root.Rx;
|
||
|
|
});
|
||
|
|
} else if (typeof module === 'object' && module && module.exports === freeExports) {
|
||
|
|
module.exports = factory(root, module.exports, require('./rx'));
|
||
|
|
} else {
|
||
|
|
root.Rx = factory(root, {}, root.Rx);
|
||
|
|
}
|
||
|
|
}.call(this, function (root, exp, Rx, undefined) {
|
||
|
|
|
||
|
|
// Aliases
|
||
|
|
var Observable = Rx.Observable,
|
||
|
|
observableFromPromise = Observable.fromPromise,
|
||
|
|
observableThrow = Observable.throwError,
|
||
|
|
AnonymousObservable = Rx.AnonymousObservable,
|
||
|
|
ObservableBase = Rx.ObservableBase,
|
||
|
|
AsyncSubject = Rx.AsyncSubject,
|
||
|
|
disposableCreate = Rx.Disposable.create,
|
||
|
|
CompositeDisposable = Rx.CompositeDisposable,
|
||
|
|
immediateScheduler = Rx.Scheduler.immediate,
|
||
|
|
defaultScheduler = Rx.Scheduler['default'],
|
||
|
|
inherits = Rx.internals.inherits,
|
||
|
|
isScheduler = Rx.Scheduler.isScheduler,
|
||
|
|
isPromise = Rx.helpers.isPromise,
|
||
|
|
isFunction = Rx.helpers.isFunction,
|
||
|
|
isIterable = Rx.helpers.isIterable,
|
||
|
|
isArrayLike = Rx.helpers.isArrayLike;
|
||
|
|
|
||
|
|
var errorObj = {e: {}};
|
||
|
|
|
||
|
|
function tryCatcherGen(tryCatchTarget) {
|
||
|
|
return function tryCatcher() {
|
||
|
|
try {
|
||
|
|
return tryCatchTarget.apply(this, arguments);
|
||
|
|
} catch (e) {
|
||
|
|
errorObj.e = e;
|
||
|
|
return errorObj;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
|
||
|
|
if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
|
||
|
|
return tryCatcherGen(fn);
|
||
|
|
};
|
||
|
|
|
||
|
|
function thrower(e) {
|
||
|
|
throw e;
|
||
|
|
}
|
||
|
|
|
||
|
|
Observable.wrap = function (fn) {
|
||
|
|
function createObservable() {
|
||
|
|
return Observable.spawn.call(this, fn.apply(this, arguments));
|
||
|
|
}
|
||
|
|
|
||
|
|
createObservable.__generatorFunction__ = fn;
|
||
|
|
return createObservable;
|
||
|
|
};
|
||
|
|
|
||
|
|
var spawn = Observable.spawn = function () {
|
||
|
|
var gen = arguments[0], self = this, args = [];
|
||
|
|
for (var i = 1, len = arguments.length; i < len; i++) { args.push(arguments[i]); }
|
||
|
|
|
||
|
|
return new AnonymousObservable(function (o) {
|
||
|
|
var g = new CompositeDisposable();
|
||
|
|
|
||
|
|
if (isFunction(gen)) { gen = gen.apply(self, args); }
|
||
|
|
if (!gen || !isFunction(gen.next)) {
|
||
|
|
o.onNext(gen);
|
||
|
|
return o.onCompleted();
|
||
|
|
}
|
||
|
|
|
||
|
|
function processGenerator(res) {
|
||
|
|
var ret = tryCatch(gen.next).call(gen, res);
|
||
|
|
if (ret === errorObj) { return o.onError(ret.e); }
|
||
|
|
next(ret);
|
||
|
|
}
|
||
|
|
|
||
|
|
processGenerator();
|
||
|
|
|
||
|
|
function onError(err) {
|
||
|
|
var ret = tryCatch(gen.next).call(gen, err);
|
||
|
|
if (ret === errorObj) { return o.onError(ret.e); }
|
||
|
|
next(ret);
|
||
|
|
}
|
||
|
|
|
||
|
|
function next(ret) {
|
||
|
|
if (ret.done) {
|
||
|
|
o.onNext(ret.value);
|
||
|
|
o.onCompleted();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
var obs = toObservable.call(self, ret.value);
|
||
|
|
var value = null;
|
||
|
|
var hasValue = false;
|
||
|
|
if (Observable.isObservable(obs)) {
|
||
|
|
g.add(obs.subscribe(function(val) {
|
||
|
|
hasValue = true;
|
||
|
|
value = val;
|
||
|
|
}, onError, function() {
|
||
|
|
hasValue && processGenerator(value);
|
||
|
|
}));
|
||
|
|
} else {
|
||
|
|
onError(new TypeError('type not supported'));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return g;
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
function toObservable(obj) {
|
||
|
|
if (!obj) { return obj; }
|
||
|
|
if (Observable.isObservable(obj)) { return obj; }
|
||
|
|
if (isPromise(obj)) { return Observable.fromPromise(obj); }
|
||
|
|
if (isGeneratorFunction(obj) || isGenerator(obj)) { return spawn.call(this, obj); }
|
||
|
|
if (isFunction(obj)) { return thunkToObservable.call(this, obj); }
|
||
|
|
if (isArrayLike(obj) || isIterable(obj)) { return arrayToObservable.call(this, obj); }
|
||
|
|
if (isObject(obj)) {return objectToObservable.call(this, obj);}
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
function arrayToObservable (obj) {
|
||
|
|
return Observable.from(obj).concatMap(function(o) {
|
||
|
|
if(Observable.isObservable(o) || isObject(o)) {
|
||
|
|
return toObservable.call(null, o);
|
||
|
|
} else {
|
||
|
|
return Rx.Observable.just(o);
|
||
|
|
}
|
||
|
|
}).toArray();
|
||
|
|
}
|
||
|
|
|
||
|
|
function objectToObservable (obj) {
|
||
|
|
var results = new obj.constructor(), keys = Object.keys(obj), observables = [];
|
||
|
|
for (var i = 0, len = keys.length; i < len; i++) {
|
||
|
|
var key = keys[i];
|
||
|
|
var observable = toObservable.call(this, obj[key]);
|
||
|
|
|
||
|
|
if(observable && Observable.isObservable(observable)) {
|
||
|
|
defer(observable, key);
|
||
|
|
} else {
|
||
|
|
results[key] = obj[key];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return Observable.forkJoin.apply(Observable, observables).map(function() {
|
||
|
|
return results;
|
||
|
|
});
|
||
|
|
|
||
|
|
|
||
|
|
function defer (observable, key) {
|
||
|
|
results[key] = undefined;
|
||
|
|
observables.push(observable.map(function (next) {
|
||
|
|
results[key] = next;
|
||
|
|
}));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function thunkToObservable(fn) {
|
||
|
|
var self = this;
|
||
|
|
return new AnonymousObservable(function (o) {
|
||
|
|
fn.call(self, function () {
|
||
|
|
var err = arguments[0], res = arguments[1];
|
||
|
|
if (err) { return o.onError(err); }
|
||
|
|
if (arguments.length > 2) {
|
||
|
|
var args = [];
|
||
|
|
for (var i = 1, len = arguments.length; i < len; i++) { args.push(arguments[i]); }
|
||
|
|
res = args;
|
||
|
|
}
|
||
|
|
o.onNext(res);
|
||
|
|
o.onCompleted();
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function isGenerator(obj) {
|
||
|
|
return isFunction (obj.next) && isFunction (obj['throw']);
|
||
|
|
}
|
||
|
|
|
||
|
|
function isGeneratorFunction(obj) {
|
||
|
|
var ctor = obj.constructor;
|
||
|
|
if (!ctor) { return false; }
|
||
|
|
if (ctor.name === 'GeneratorFunction' || ctor.displayName === 'GeneratorFunction') { return true; }
|
||
|
|
return isGenerator(ctor.prototype);
|
||
|
|
}
|
||
|
|
|
||
|
|
function isObject(val) {
|
||
|
|
return Object == val.constructor;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Invokes the specified function asynchronously on the specified scheduler, surfacing the result through an observable sequence.
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* var res = Rx.Observable.start(function () { console.log('hello'); });
|
||
|
|
* var res = Rx.Observable.start(function () { console.log('hello'); }, Rx.Scheduler.timeout);
|
||
|
|
* var res = Rx.Observable.start(function () { this.log('hello'); }, Rx.Scheduler.timeout, console);
|
||
|
|
*
|
||
|
|
* @param {Function} func Function to run asynchronously.
|
||
|
|
* @param {Scheduler} [scheduler] Scheduler to run the function on. If not specified, defaults to Scheduler.timeout.
|
||
|
|
* @param [context] The context for the func parameter to be executed. If not specified, defaults to undefined.
|
||
|
|
* @returns {Observable} An observable sequence exposing the function's result value, or an exception.
|
||
|
|
*
|
||
|
|
* Remarks
|
||
|
|
* * The function is called immediately, not during the subscription of the resulting sequence.
|
||
|
|
* * Multiple subscriptions to the resulting sequence can observe the function's result.
|
||
|
|
*/
|
||
|
|
Observable.start = function (func, context, scheduler) {
|
||
|
|
return observableToAsync(func, context, scheduler)();
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Converts the function into an asynchronous function. Each invocation of the resulting asynchronous function causes an invocation of the original synchronous function on the specified scheduler.
|
||
|
|
* @param {Function} function Function to convert to an asynchronous function.
|
||
|
|
* @param {Scheduler} [scheduler] Scheduler to run the function on. If not specified, defaults to Scheduler.timeout.
|
||
|
|
* @param {Mixed} [context] The context for the func parameter to be executed. If not specified, defaults to undefined.
|
||
|
|
* @returns {Function} Asynchronous function.
|
||
|
|
*/
|
||
|
|
var observableToAsync = Observable.toAsync = function (func, context, scheduler) {
|
||
|
|
isScheduler(scheduler) || (scheduler = defaultScheduler);
|
||
|
|
return function () {
|
||
|
|
var args = arguments,
|
||
|
|
subject = new AsyncSubject();
|
||
|
|
|
||
|
|
scheduler.schedule(null, function () {
|
||
|
|
var result;
|
||
|
|
try {
|
||
|
|
result = func.apply(context, args);
|
||
|
|
} catch (e) {
|
||
|
|
subject.onError(e);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
subject.onNext(result);
|
||
|
|
subject.onCompleted();
|
||
|
|
});
|
||
|
|
return subject.asObservable();
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
function createCbObservable(fn, ctx, selector, args) {
|
||
|
|
var o = new AsyncSubject();
|
||
|
|
|
||
|
|
args.push(createCbHandler(o, ctx, selector));
|
||
|
|
fn.apply(ctx, args);
|
||
|
|
|
||
|
|
return o.asObservable();
|
||
|
|
}
|
||
|
|
|
||
|
|
function createCbHandler(o, ctx, selector) {
|
||
|
|
return function handler () {
|
||
|
|
var len = arguments.length, results = new Array(len);
|
||
|
|
for(var i = 0; i < len; i++) { results[i] = arguments[i]; }
|
||
|
|
|
||
|
|
if (isFunction(selector)) {
|
||
|
|
results = tryCatch(selector).apply(ctx, results);
|
||
|
|
if (results === errorObj) { return o.onError(results.e); }
|
||
|
|
o.onNext(results);
|
||
|
|
} else {
|
||
|
|
if (results.length <= 1) {
|
||
|
|
o.onNext(results[0]);
|
||
|
|
} else {
|
||
|
|
o.onNext(results);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
o.onCompleted();
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Converts a callback function to an observable sequence.
|
||
|
|
*
|
||
|
|
* @param {Function} fn Function with a callback as the last parameter to convert to an Observable sequence.
|
||
|
|
* @param {Mixed} [ctx] The context for the func parameter to be executed. If not specified, defaults to undefined.
|
||
|
|
* @param {Function} [selector] A selector which takes the arguments from the callback to produce a single item to yield on next.
|
||
|
|
* @returns {Function} A function, when executed with the required parameters minus the callback, produces an Observable sequence with a single value of the arguments to the callback as an array.
|
||
|
|
*/
|
||
|
|
Observable.fromCallback = function (fn, ctx, selector) {
|
||
|
|
return function () {
|
||
|
|
typeof ctx === 'undefined' && (ctx = this);
|
||
|
|
|
||
|
|
var len = arguments.length, args = new Array(len)
|
||
|
|
for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
|
||
|
|
return createCbObservable(fn, ctx, selector, args);
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
function createNodeObservable(fn, ctx, selector, args) {
|
||
|
|
var o = new AsyncSubject();
|
||
|
|
|
||
|
|
args.push(createNodeHandler(o, ctx, selector));
|
||
|
|
fn.apply(ctx, args);
|
||
|
|
|
||
|
|
return o.asObservable();
|
||
|
|
}
|
||
|
|
|
||
|
|
function createNodeHandler(o, ctx, selector) {
|
||
|
|
return function handler () {
|
||
|
|
var err = arguments[0];
|
||
|
|
if (err) { return o.onError(err); }
|
||
|
|
|
||
|
|
var len = arguments.length, results = [];
|
||
|
|
for(var i = 1; i < len; i++) { results[i - 1] = arguments[i]; }
|
||
|
|
|
||
|
|
if (isFunction(selector)) {
|
||
|
|
var results = tryCatch(selector).apply(ctx, results);
|
||
|
|
if (results === errorObj) { return o.onError(results.e); }
|
||
|
|
o.onNext(results);
|
||
|
|
} else {
|
||
|
|
if (results.length <= 1) {
|
||
|
|
o.onNext(results[0]);
|
||
|
|
} else {
|
||
|
|
o.onNext(results);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
o.onCompleted();
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Converts a Node.js callback style function to an observable sequence. This must be in function (err, ...) format.
|
||
|
|
* @param {Function} fn The function to call
|
||
|
|
* @param {Mixed} [ctx] The context for the func parameter to be executed. If not specified, defaults to undefined.
|
||
|
|
* @param {Function} [selector] A selector which takes the arguments from the callback minus the error to produce a single item to yield on next.
|
||
|
|
* @returns {Function} An async function which when applied, returns an observable sequence with the callback arguments as an array.
|
||
|
|
*/
|
||
|
|
Observable.fromNodeCallback = function (fn, ctx, selector) {
|
||
|
|
return function () {
|
||
|
|
typeof ctx === 'undefined' && (ctx = this);
|
||
|
|
var len = arguments.length, args = new Array(len);
|
||
|
|
for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
|
||
|
|
return createNodeObservable(fn, ctx, selector, args);
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
function isNodeList(el) {
|
||
|
|
if (root.StaticNodeList) {
|
||
|
|
// IE8 Specific
|
||
|
|
// instanceof is slower than Object#toString, but Object#toString will not work as intended in IE8
|
||
|
|
return el instanceof root.StaticNodeList || el instanceof root.NodeList;
|
||
|
|
} else {
|
||
|
|
return Object.prototype.toString.call(el) === '[object NodeList]';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function ListenDisposable(e, n, fn) {
|
||
|
|
this._e = e;
|
||
|
|
this._n = n;
|
||
|
|
this._fn = fn;
|
||
|
|
this._e.addEventListener(this._n, this._fn, false);
|
||
|
|
this.isDisposed = false;
|
||
|
|
}
|
||
|
|
ListenDisposable.prototype.dispose = function () {
|
||
|
|
if (!this.isDisposed) {
|
||
|
|
this._e.removeEventListener(this._n, this._fn, false);
|
||
|
|
this.isDisposed = true;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
function createEventListener (el, eventName, handler) {
|
||
|
|
var disposables = new CompositeDisposable();
|
||
|
|
|
||
|
|
// Asume NodeList or HTMLCollection
|
||
|
|
var elemToString = Object.prototype.toString.call(el);
|
||
|
|
if (isNodeList(el) || elemToString === '[object HTMLCollection]') {
|
||
|
|
for (var i = 0, len = el.length; i < len; i++) {
|
||
|
|
disposables.add(createEventListener(el.item(i), eventName, handler));
|
||
|
|
}
|
||
|
|
} else if (el) {
|
||
|
|
disposables.add(new ListenDisposable(el, eventName, handler));
|
||
|
|
}
|
||
|
|
|
||
|
|
return disposables;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Configuration option to determine whether to use native events only
|
||
|
|
*/
|
||
|
|
Rx.config.useNativeEvents = false;
|
||
|
|
|
||
|
|
var EventObservable = (function(__super__) {
|
||
|
|
inherits(EventObservable, __super__);
|
||
|
|
function EventObservable(el, name, fn) {
|
||
|
|
this._el = el;
|
||
|
|
this._n = name;
|
||
|
|
this._fn = fn;
|
||
|
|
__super__.call(this);
|
||
|
|
}
|
||
|
|
|
||
|
|
function createHandler(o, fn) {
|
||
|
|
return function handler () {
|
||
|
|
var results = arguments[0];
|
||
|
|
if (isFunction(fn)) {
|
||
|
|
results = tryCatch(fn).apply(null, arguments);
|
||
|
|
if (results === errorObj) { return o.onError(results.e); }
|
||
|
|
}
|
||
|
|
o.onNext(results);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
EventObservable.prototype.subscribeCore = function (o) {
|
||
|
|
return createEventListener(
|
||
|
|
this._el,
|
||
|
|
this._n,
|
||
|
|
createHandler(o, this._fn));
|
||
|
|
};
|
||
|
|
|
||
|
|
return EventObservable;
|
||
|
|
}(ObservableBase));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates an observable sequence by adding an event listener to the matching DOMElement or each item in the NodeList.
|
||
|
|
* @param {Object} element The DOMElement or NodeList to attach a listener.
|
||
|
|
* @param {String} eventName The event name to attach the observable sequence.
|
||
|
|
* @param {Function} [selector] A selector which takes the arguments from the event handler to produce a single item to yield on next.
|
||
|
|
* @returns {Observable} An observable sequence of events from the specified element and the specified event.
|
||
|
|
*/
|
||
|
|
Observable.fromEvent = function (element, eventName, selector) {
|
||
|
|
// Node.js specific
|
||
|
|
if (element.addListener) {
|
||
|
|
return fromEventPattern(
|
||
|
|
function (h) { element.addListener(eventName, h); },
|
||
|
|
function (h) { element.removeListener(eventName, h); },
|
||
|
|
selector);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Use only if non-native events are allowed
|
||
|
|
if (!Rx.config.useNativeEvents) {
|
||
|
|
// Handles jq, Angular.js, Zepto, Marionette, Ember.js
|
||
|
|
if (typeof element.on === 'function' && typeof element.off === 'function') {
|
||
|
|
return fromEventPattern(
|
||
|
|
function (h) { element.on(eventName, h); },
|
||
|
|
function (h) { element.off(eventName, h); },
|
||
|
|
selector);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return new EventObservable(element, eventName, selector).publish().refCount();
|
||
|
|
};
|
||
|
|
|
||
|
|
var EventPatternObservable = (function(__super__) {
|
||
|
|
inherits(EventPatternObservable, __super__);
|
||
|
|
function EventPatternObservable(add, del, fn) {
|
||
|
|
this._add = add;
|
||
|
|
this._del = del;
|
||
|
|
this._fn = fn;
|
||
|
|
__super__.call(this);
|
||
|
|
}
|
||
|
|
|
||
|
|
function createHandler(o, fn) {
|
||
|
|
return function handler () {
|
||
|
|
var results = arguments[0];
|
||
|
|
if (isFunction(fn)) {
|
||
|
|
results = tryCatch(fn).apply(null, arguments);
|
||
|
|
if (results === errorObj) { return o.onError(results.e); }
|
||
|
|
}
|
||
|
|
o.onNext(results);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
EventPatternObservable.prototype.subscribeCore = function (o) {
|
||
|
|
var fn = createHandler(o, this._fn);
|
||
|
|
var returnValue = this._add(fn);
|
||
|
|
return new EventPatternDisposable(this._del, fn, returnValue);
|
||
|
|
};
|
||
|
|
|
||
|
|
function EventPatternDisposable(del, fn, ret) {
|
||
|
|
this._del = del;
|
||
|
|
this._fn = fn;
|
||
|
|
this._ret = ret;
|
||
|
|
this.isDisposed = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
EventPatternDisposable.prototype.dispose = function () {
|
||
|
|
if(!this.isDisposed) {
|
||
|
|
isFunction(this._del) && this._del(this._fn, this._ret);
|
||
|
|
this.isDisposed = true;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
return EventPatternObservable;
|
||
|
|
}(ObservableBase));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates an observable sequence from an event emitter via an addHandler/removeHandler pair.
|
||
|
|
* @param {Function} addHandler The function to add a handler to the emitter.
|
||
|
|
* @param {Function} [removeHandler] The optional function to remove a handler from an emitter.
|
||
|
|
* @param {Function} [selector] A selector which takes the arguments from the event handler to produce a single item to yield on next.
|
||
|
|
* @returns {Observable} An observable sequence which wraps an event from an event emitter
|
||
|
|
*/
|
||
|
|
var fromEventPattern = Observable.fromEventPattern = function (addHandler, removeHandler, selector) {
|
||
|
|
return new EventPatternObservable(addHandler, removeHandler, selector).publish().refCount();
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Invokes the asynchronous function, surfacing the result through an observable sequence.
|
||
|
|
* @param {Function} functionAsync Asynchronous function which returns a Promise to run.
|
||
|
|
* @returns {Observable} An observable sequence exposing the function's result value, or an exception.
|
||
|
|
*/
|
||
|
|
Observable.startAsync = function (functionAsync) {
|
||
|
|
var promise = tryCatch(functionAsync)();
|
||
|
|
if (promise === errorObj) { return observableThrow(promise.e); }
|
||
|
|
return observableFromPromise(promise);
|
||
|
|
};
|
||
|
|
|
||
|
|
return Rx;
|
||
|
|
}));
|