Code coverage report for cjs/operator/bufferWhen.js

Statements: 100% (63 / 63)      Branches: 82.35% (14 / 17)      Functions: 100% (14 / 14)      Lines: 100% (60 / 60)      Ignored: none     

All files » cjs/operator/ » bufferWhen.js
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var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) Eif (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var Subscription_1 = require('../Subscription');
var tryCatch_1 = require('../util/tryCatch');
var errorObject_1 = require('../util/errorObject');
var OuterSubscriber_1 = require('../OuterSubscriber');
var subscribeToResult_1 = require('../util/subscribeToResult');
/**
 * Opens a buffer immediately, then closes the buffer when the observable
 * returned by calling `closingSelector` emits a value. It that immediately
 * opens a new buffer and repeats the process.
 *
 * <img src="./img/bufferWhen.png" width="100%">
 *
 * @param {function} closingSelector a function that takes no arguments and
 * returns an Observable that signals buffer closure.
 * @returns {Observable<T[]>} an observable of arrays of buffered values.
 */
function bufferWhen(closingSelector) {
    return this.lift(new BufferWhenOperator(closingSelector));
}
exports.bufferWhen = bufferWhen;
var BufferWhenOperator = (function () {
    function BufferWhenOperator(closingSelector) {
        this.closingSelector = closingSelector;
    }
    BufferWhenOperator.prototype.call = function (subscriber) {
        return new BufferWhenSubscriber(subscriber, this.closingSelector);
    };
    return BufferWhenOperator;
})();
var BufferWhenSubscriber = (function (_super) {
    __extends(BufferWhenSubscriber, _super);
    function BufferWhenSubscriber(destination, closingSelector) {
        _super.call(this, destination);
        this.closingSelector = closingSelector;
        this.subscribing = false;
        this.openBuffer();
    }
    BufferWhenSubscriber.prototype._next = function (value) {
        this.buffer.push(value);
    };
    BufferWhenSubscriber.prototype._complete = function () {
        var buffer = this.buffer;
        Eif (buffer) {
            this.destination.next(buffer);
        }
        _super.prototype._complete.call(this);
    };
    BufferWhenSubscriber.prototype._unsubscribe = function () {
        this.buffer = null;
        this.subscribing = false;
    };
    BufferWhenSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex) {
        this.openBuffer();
    };
    BufferWhenSubscriber.prototype.notifyComplete = function () {
        if (this.subscribing) {
            this.complete();
        }
        else {
            this.openBuffer();
        }
    };
    BufferWhenSubscriber.prototype.openBuffer = function () {
        var closingSubscription = this.closingSubscription;
        if (closingSubscription) {
            this.remove(closingSubscription);
            closingSubscription.unsubscribe();
        }
        var buffer = this.buffer;
        if (this.buffer) {
            this.destination.next(buffer);
        }
        this.buffer = [];
        var closingNotifier = tryCatch_1.tryCatch(this.closingSelector)();
        if (closingNotifier === errorObject_1.errorObject) {
            this.error(errorObject_1.errorObject.e);
        }
        else {
            closingSubscription = new Subscription_1.Subscription();
            this.closingSubscription = closingSubscription;
            this.add(closingSubscription);
            this.subscribing = true;
            closingSubscription.add(subscribeToResult_1.subscribeToResult(this, closingNotifier));
            this.subscribing = false;
        }
    };
    return BufferWhenSubscriber;
})(OuterSubscriber_1.OuterSubscriber);
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