node_modules/rxjs/internal/operators/bufferWhen.js

"use strict";
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    }
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var Subscription_1 = require("../Subscription");
var innerSubscribe_1 = require("../innerSubscribe");
function bufferWhen(closingSelector) {
    return function (source) {
        return source.lift(new BufferWhenOperator(closingSelector));
    };
}
exports.bufferWhen = bufferWhen;
var BufferWhenOperator = (function () {
    function BufferWhenOperator(closingSelector) {
        this.closingSelector = closingSelector;
    }
    BufferWhenOperator.prototype.call = function (subscriber, source) {
        return source.subscribe(new BufferWhenSubscriber(subscriber, this.closingSelector));
    };
    return BufferWhenOperator;
}());
var BufferWhenSubscriber = (function (_super) {
    __extends(BufferWhenSubscriber, _super);
    function BufferWhenSubscriber(destination, closingSelector) {
        var _this = _super.call(this, destination) || this;
        _this.closingSelector = closingSelector;
        _this.subscribing = false;
        _this.openBuffer();
        return _this;
    }
    BufferWhenSubscriber.prototype._next = function (value) {
        this.buffer.push(value);
    };
    BufferWhenSubscriber.prototype._complete = function () {
        var buffer = this.buffer;
        if (buffer) {
            this.destination.next(buffer);
        }
        _super.prototype._complete.call(this);
    };
    BufferWhenSubscriber.prototype._unsubscribe = function () {
        this.buffer = undefined;
        this.subscribing = false;
    };
    BufferWhenSubscriber.prototype.notifyNext = function () {
        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;
        try {
            var closingSelector = this.closingSelector;
            closingNotifier = closingSelector();
        }
        catch (err) {
            return this.error(err);
        }
        closingSubscription = new Subscription_1.Subscription();
        this.closingSubscription = closingSubscription;
        this.add(closingSubscription);
        this.subscribing = true;
        closingSubscription.add(innerSubscribe_1.innerSubscribe(closingNotifier, new innerSubscribe_1.SimpleInnerSubscriber(this)));
        this.subscribing = false;
    };
    return BufferWhenSubscriber;
}(innerSubscribe_1.SimpleOuterSubscriber));
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