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- "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 OuterSubscriber_1 = require("../OuterSubscriber");
- var subscribeToResult_1 = require("../util/subscribeToResult");
- exports.defaultThrottleConfig = {
- leading: true,
- trailing: false
- };
- function throttle(durationSelector, config) {
- if (config === void 0) { config = exports.defaultThrottleConfig; }
- return function (source) { return source.lift(new ThrottleOperator(durationSelector, config.leading, config.trailing)); };
- }
- exports.throttle = throttle;
- var ThrottleOperator = (function () {
- function ThrottleOperator(durationSelector, leading, trailing) {
- this.durationSelector = durationSelector;
- this.leading = leading;
- this.trailing = trailing;
- }
- ThrottleOperator.prototype.call = function (subscriber, source) {
- return source.subscribe(new ThrottleSubscriber(subscriber, this.durationSelector, this.leading, this.trailing));
- };
- return ThrottleOperator;
- }());
- var ThrottleSubscriber = (function (_super) {
- __extends(ThrottleSubscriber, _super);
- function ThrottleSubscriber(destination, durationSelector, _leading, _trailing) {
- var _this = _super.call(this, destination) || this;
- _this.destination = destination;
- _this.durationSelector = durationSelector;
- _this._leading = _leading;
- _this._trailing = _trailing;
- _this._hasValue = false;
- return _this;
- }
- ThrottleSubscriber.prototype._next = function (value) {
- this._hasValue = true;
- this._sendValue = value;
- if (!this._throttled) {
- if (this._leading) {
- this.send();
- }
- else {
- this.throttle(value);
- }
- }
- };
- ThrottleSubscriber.prototype.send = function () {
- var _a = this, _hasValue = _a._hasValue, _sendValue = _a._sendValue;
- if (_hasValue) {
- this.destination.next(_sendValue);
- this.throttle(_sendValue);
- }
- this._hasValue = false;
- this._sendValue = null;
- };
- ThrottleSubscriber.prototype.throttle = function (value) {
- var duration = this.tryDurationSelector(value);
- if (duration) {
- this.add(this._throttled = subscribeToResult_1.subscribeToResult(this, duration));
- }
- };
- ThrottleSubscriber.prototype.tryDurationSelector = function (value) {
- try {
- return this.durationSelector(value);
- }
- catch (err) {
- this.destination.error(err);
- return null;
- }
- };
- ThrottleSubscriber.prototype.throttlingDone = function () {
- var _a = this, _throttled = _a._throttled, _trailing = _a._trailing;
- if (_throttled) {
- _throttled.unsubscribe();
- }
- this._throttled = null;
- if (_trailing) {
- this.send();
- }
- };
- ThrottleSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
- this.throttlingDone();
- };
- ThrottleSubscriber.prototype.notifyComplete = function () {
- this.throttlingDone();
- };
- return ThrottleSubscriber;
- }(OuterSubscriber_1.OuterSubscriber));
- //# sourceMappingURL=throttle.js.map
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