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86 lines
3.1 KiB
86 lines
3.1 KiB
4 years ago
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/** PURE_IMPORTS_START tslib,_Subscriber,_scheduler_async,_throttle PURE_IMPORTS_END */
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import * as tslib_1 from "tslib";
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import { Subscriber } from '../Subscriber';
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import { async } from '../scheduler/async';
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import { defaultThrottleConfig } from './throttle';
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export function throttleTime(duration, scheduler, config) {
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if (scheduler === void 0) {
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scheduler = async;
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}
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if (config === void 0) {
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config = defaultThrottleConfig;
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}
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return function (source) { return source.lift(new ThrottleTimeOperator(duration, scheduler, config.leading, config.trailing)); };
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}
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var ThrottleTimeOperator = /*@__PURE__*/ (function () {
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function ThrottleTimeOperator(duration, scheduler, leading, trailing) {
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this.duration = duration;
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this.scheduler = scheduler;
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this.leading = leading;
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this.trailing = trailing;
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}
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ThrottleTimeOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new ThrottleTimeSubscriber(subscriber, this.duration, this.scheduler, this.leading, this.trailing));
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};
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return ThrottleTimeOperator;
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}());
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var ThrottleTimeSubscriber = /*@__PURE__*/ (function (_super) {
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tslib_1.__extends(ThrottleTimeSubscriber, _super);
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function ThrottleTimeSubscriber(destination, duration, scheduler, leading, trailing) {
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var _this = _super.call(this, destination) || this;
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_this.duration = duration;
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_this.scheduler = scheduler;
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_this.leading = leading;
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_this.trailing = trailing;
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_this._hasTrailingValue = false;
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_this._trailingValue = null;
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return _this;
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}
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ThrottleTimeSubscriber.prototype._next = function (value) {
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if (this.throttled) {
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if (this.trailing) {
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this._trailingValue = value;
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this._hasTrailingValue = true;
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}
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}
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else {
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this.add(this.throttled = this.scheduler.schedule(dispatchNext, this.duration, { subscriber: this }));
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if (this.leading) {
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this.destination.next(value);
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}
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else if (this.trailing) {
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this._trailingValue = value;
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this._hasTrailingValue = true;
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}
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}
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};
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ThrottleTimeSubscriber.prototype._complete = function () {
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if (this._hasTrailingValue) {
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this.destination.next(this._trailingValue);
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this.destination.complete();
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}
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else {
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this.destination.complete();
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}
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};
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ThrottleTimeSubscriber.prototype.clearThrottle = function () {
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var throttled = this.throttled;
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if (throttled) {
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if (this.trailing && this._hasTrailingValue) {
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this.destination.next(this._trailingValue);
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this._trailingValue = null;
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this._hasTrailingValue = false;
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}
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throttled.unsubscribe();
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this.remove(throttled);
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this.throttled = null;
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}
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};
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return ThrottleTimeSubscriber;
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}(Subscriber));
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function dispatchNext(arg) {
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var subscriber = arg.subscriber;
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subscriber.clearThrottle();
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}
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//# sourceMappingURL=throttleTime.js.map
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