--- /dev/null
+/** PURE_IMPORTS_START tslib,_Subject,_OuterSubscriber,_util_subscribeToResult PURE_IMPORTS_END */
+import * as tslib_1 from "tslib";
+import { Subject } from '../Subject';
+import { OuterSubscriber } from '../OuterSubscriber';
+import { subscribeToResult } from '../util/subscribeToResult';
+export function windowWhen(closingSelector) {
+ return function windowWhenOperatorFunction(source) {
+ return source.lift(new WindowOperator(closingSelector));
+ };
+}
+var WindowOperator = /*@__PURE__*/ (function () {
+ function WindowOperator(closingSelector) {
+ this.closingSelector = closingSelector;
+ }
+ WindowOperator.prototype.call = function (subscriber, source) {
+ return source.subscribe(new WindowSubscriber(subscriber, this.closingSelector));
+ };
+ return WindowOperator;
+}());
+var WindowSubscriber = /*@__PURE__*/ (function (_super) {
+ tslib_1.__extends(WindowSubscriber, _super);
+ function WindowSubscriber(destination, closingSelector) {
+ var _this = _super.call(this, destination) || this;
+ _this.destination = destination;
+ _this.closingSelector = closingSelector;
+ _this.openWindow();
+ return _this;
+ }
+ WindowSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
+ this.openWindow(innerSub);
+ };
+ WindowSubscriber.prototype.notifyError = function (error, innerSub) {
+ this._error(error);
+ };
+ WindowSubscriber.prototype.notifyComplete = function (innerSub) {
+ this.openWindow(innerSub);
+ };
+ WindowSubscriber.prototype._next = function (value) {
+ this.window.next(value);
+ };
+ WindowSubscriber.prototype._error = function (err) {
+ this.window.error(err);
+ this.destination.error(err);
+ this.unsubscribeClosingNotification();
+ };
+ WindowSubscriber.prototype._complete = function () {
+ this.window.complete();
+ this.destination.complete();
+ this.unsubscribeClosingNotification();
+ };
+ WindowSubscriber.prototype.unsubscribeClosingNotification = function () {
+ if (this.closingNotification) {
+ this.closingNotification.unsubscribe();
+ }
+ };
+ WindowSubscriber.prototype.openWindow = function (innerSub) {
+ if (innerSub === void 0) {
+ innerSub = null;
+ }
+ if (innerSub) {
+ this.remove(innerSub);
+ innerSub.unsubscribe();
+ }
+ var prevWindow = this.window;
+ if (prevWindow) {
+ prevWindow.complete();
+ }
+ var window = this.window = new Subject();
+ this.destination.next(window);
+ var closingNotifier;
+ try {
+ var closingSelector = this.closingSelector;
+ closingNotifier = closingSelector();
+ }
+ catch (e) {
+ this.destination.error(e);
+ this.window.error(e);
+ return;
+ }
+ this.add(this.closingNotification = subscribeToResult(this, closingNotifier));
+ };
+ return WindowSubscriber;
+}(OuterSubscriber));
+//# sourceMappingURL=windowWhen.js.map