1 | /** PURE_IMPORTS_START tslib,_Subscription,_innerSubscribe PURE_IMPORTS_END */
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2 | import * as tslib_1 from "tslib";
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3 | import { Subscription } from '../Subscription';
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4 | import { SimpleOuterSubscriber, innerSubscribe, SimpleInnerSubscriber } from '../innerSubscribe';
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5 | export function bufferWhen(closingSelector) {
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6 | return function (source) {
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7 | return source.lift(new BufferWhenOperator(closingSelector));
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8 | };
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9 | }
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10 | var BufferWhenOperator = /*@__PURE__*/ (function () {
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11 | function BufferWhenOperator(closingSelector) {
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12 | this.closingSelector = closingSelector;
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13 | }
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14 | BufferWhenOperator.prototype.call = function (subscriber, source) {
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15 | return source.subscribe(new BufferWhenSubscriber(subscriber, this.closingSelector));
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16 | };
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17 | return BufferWhenOperator;
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18 | }());
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19 | var BufferWhenSubscriber = /*@__PURE__*/ (function (_super) {
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20 | tslib_1.__extends(BufferWhenSubscriber, _super);
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21 | function BufferWhenSubscriber(destination, closingSelector) {
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22 | var _this = _super.call(this, destination) || this;
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23 | _this.closingSelector = closingSelector;
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24 | _this.subscribing = false;
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25 | _this.openBuffer();
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26 | return _this;
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27 | }
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28 | BufferWhenSubscriber.prototype._next = function (value) {
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29 | this.buffer.push(value);
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30 | };
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31 | BufferWhenSubscriber.prototype._complete = function () {
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32 | var buffer = this.buffer;
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33 | if (buffer) {
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34 | this.destination.next(buffer);
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35 | }
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36 | _super.prototype._complete.call(this);
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37 | };
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38 | BufferWhenSubscriber.prototype._unsubscribe = function () {
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39 | this.buffer = undefined;
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40 | this.subscribing = false;
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41 | };
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42 | BufferWhenSubscriber.prototype.notifyNext = function () {
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43 | this.openBuffer();
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44 | };
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45 | BufferWhenSubscriber.prototype.notifyComplete = function () {
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46 | if (this.subscribing) {
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47 | this.complete();
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48 | }
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49 | else {
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50 | this.openBuffer();
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51 | }
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52 | };
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53 | BufferWhenSubscriber.prototype.openBuffer = function () {
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54 | var closingSubscription = this.closingSubscription;
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55 | if (closingSubscription) {
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56 | this.remove(closingSubscription);
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57 | closingSubscription.unsubscribe();
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58 | }
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59 | var buffer = this.buffer;
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60 | if (this.buffer) {
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61 | this.destination.next(buffer);
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62 | }
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63 | this.buffer = [];
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64 | var closingNotifier;
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65 | try {
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66 | var closingSelector = this.closingSelector;
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67 | closingNotifier = closingSelector();
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68 | }
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69 | catch (err) {
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70 | return this.error(err);
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71 | }
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72 | closingSubscription = new Subscription();
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73 | this.closingSubscription = closingSubscription;
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74 | this.add(closingSubscription);
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75 | this.subscribing = true;
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76 | closingSubscription.add(innerSubscribe(closingNotifier, new SimpleInnerSubscriber(this)));
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77 | this.subscribing = false;
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78 | };
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79 | return BufferWhenSubscriber;
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80 | }(SimpleOuterSubscriber));
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81 | //# sourceMappingURL=bufferWhen.js.map
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