@reactivex/rxjs

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class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import { Subscriber } from '../Subscriber'; import { Subscription } from '../Subscription'; import { Observable } from '../Observable'; import { Subject } from '../Subject'; import { Map } from '../util/Map'; import { FastMap } from '../util/FastMap'; /* tslint:disable:max-line-length */ export function groupBy(keySelector, elementSelector, durationSelector, subjectSelector) { return this.lift(new GroupByOperator(keySelector, elementSelector, durationSelector, subjectSelector)); } var GroupByOperator = (function () { function GroupByOperator(keySelector, elementSelector, durationSelector, subjectSelector) { this.keySelector = keySelector; this.elementSelector = elementSelector; this.durationSelector = durationSelector; this.subjectSelector = subjectSelector; } GroupByOperator.prototype.call = function (subscriber, source) { return source._subscribe(new GroupBySubscriber(subscriber, this.keySelector, this.elementSelector, this.durationSelector, this.subjectSelector)); }; return GroupByOperator; }()); /** * We need this JSDoc comment for affecting ESDoc. * @ignore * @extends {Ignored} */ var GroupBySubscriber = (function (_super) { __extends(GroupBySubscriber, _super); function GroupBySubscriber(destination, keySelector, elementSelector, durationSelector, subjectSelector) { _super.call(this, destination); this.keySelector = keySelector; this.elementSelector = elementSelector; this.durationSelector = durationSelector; this.subjectSelector = subjectSelector; this.groups = null; this.attemptedToUnsubscribe = false; this.count = 0; } GroupBySubscriber.prototype._next = function (value) { var key; try { key = this.keySelector(value); } catch (err) { this.error(err); return; } this._group(value, key); }; GroupBySubscriber.prototype._group = function (value, key) { var groups = this.groups; if (!groups) { groups = this.groups = typeof key === 'string' ? new FastMap() : new Map(); } var group = groups.get(key); var element; if (this.elementSelector) { try { element = this.elementSelector(value); } catch (err) { this.error(err); } } else { element = value; } if (!group) { group = this.subjectSelector ? this.subjectSelector() : new Subject(); groups.set(key, group); var groupedObservable = new GroupedObservable(key, group, this); this.destination.next(groupedObservable); if (this.durationSelector) { var duration = void 0; try { duration = this.durationSelector(new GroupedObservable(key, group)); } catch (err) { this.error(err); return; } this.add(duration.subscribe(new GroupDurationSubscriber(key, group, this))); } } if (!group.closed) { group.next(element); } }; GroupBySubscriber.prototype._error = function (err) { var groups = this.groups; if (groups) { groups.forEach(function (group, key) { group.error(err); }); groups.clear(); } this.destination.error(err); }; GroupBySubscriber.prototype._complete = function () { var groups = this.groups; if (groups) { groups.forEach(function (group, key) { group.complete(); }); groups.clear(); } this.destination.complete(); }; GroupBySubscriber.prototype.removeGroup = function (key) { this.groups.delete(key); }; GroupBySubscriber.prototype.unsubscribe = function () { if (!this.closed && !this.attemptedToUnsubscribe) { this.attemptedToUnsubscribe = true; if (this.count === 0) { _super.prototype.unsubscribe.call(this); } } }; return GroupBySubscriber; }(Subscriber)); /** * We need this JSDoc comment for affecting ESDoc. * @ignore * @extends {Ignored} */ var GroupDurationSubscriber = (function (_super) { __extends(GroupDurationSubscriber, _super); function GroupDurationSubscriber(key, group, parent) { _super.call(this); this.key = key; this.group = group; this.parent = parent; } GroupDurationSubscriber.prototype._next = function (value) { this._complete(); }; GroupDurationSubscriber.prototype._error = function (err) { var group = this.group; if (!group.closed) { group.error(err); } this.parent.removeGroup(this.key); }; GroupDurationSubscriber.prototype._complete = function () { var group = this.group; if (!group.closed) { group.complete(); } this.parent.removeGroup(this.key); }; return GroupDurationSubscriber; }(Subscriber)); /** * An Observable representing values belonging to the same group represented by * a common key. The values emitted by a GroupedObservable come from the source * Observable. The common key is available as the field `key` on a * GroupedObservable instance. * * @class GroupedObservable<K, T> */ export var GroupedObservable = (function (_super) { __extends(GroupedObservable, _super); function GroupedObservable(key, groupSubject, refCountSubscription) { _super.call(this); this.key = key; this.groupSubject = groupSubject; this.refCountSubscription = refCountSubscription; } GroupedObservable.prototype._subscribe = function (subscriber) { var subscription = new Subscription(); var _a = this, refCountSubscription = _a.refCountSubscription, groupSubject = _a.groupSubject; if (refCountSubscription && !refCountSubscription.closed) { subscription.add(new InnerRefCountSubscription(refCountSubscription)); } subscription.add(groupSubject.subscribe(subscriber)); return subscription; }; return GroupedObservable; }(Observable)); /** * We need this JSDoc comment for affecting ESDoc. * @ignore * @extends {Ignored} */ var InnerRefCountSubscription = (function (_super) { __extends(InnerRefCountSubscription, _super); function InnerRefCountSubscription(parent) { _super.call(this); this.parent = parent; parent.count++; } InnerRefCountSubscription.prototype.unsubscribe = function () { var parent = this.parent; if (!parent.closed && !this.closed) { _super.prototype.unsubscribe.call(this); parent.count -= 1; if (parent.count === 0 && parent.attemptedToUnsubscribe) { parent.unsubscribe(); } } }; return InnerRefCountSubscription; }(Subscription)); //# sourceMappingURL=groupBy.js.map</code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc<span data-ice="esdocVersion">(0.4.8)</span></a> </footer> <script src="script/search_index.js"></script> <script src="script/search.js"></script> <script src="script/pretty-print.js"></script> <script src="script/inherited-summary.js"></script> <script src="script/test-summary.js"></script> <script src="script/inner-link.js"></script> <script src="script/patch-for-local.js"></script> </body> </html>