var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) Eif (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var fromPromise_1 = require('../observable/fromPromise');
var Subscriber_1 = require('../Subscriber');
var tryCatch_1 = require('../util/tryCatch');
var isPromise_1 = require('../util/isPromise');
var errorObject_1 = require('../util/errorObject');
function throttle(durationSelector) {
return this.lift(new ThrottleOperator(durationSelector));
}
exports.throttle = throttle;
var ThrottleOperator = (function () {
function ThrottleOperator(durationSelector) {
this.durationSelector = durationSelector;
}
ThrottleOperator.prototype.call = function (subscriber) {
return new ThrottleSubscriber(subscriber, this.durationSelector);
};
return ThrottleOperator;
})();
var ThrottleSubscriber = (function (_super) {
__extends(ThrottleSubscriber, _super);
function ThrottleSubscriber(destination, durationSelector) {
_super.call(this, destination);
this.durationSelector = durationSelector;
}
ThrottleSubscriber.prototype._next = function (value) {
if (!this.throttled) {
var destination = this.destination;
var duration = tryCatch_1.tryCatch(this.durationSelector)(value);
if (duration === errorObject_1.errorObject) {
destination.error(errorObject_1.errorObject.e);
return;
}
if (isPromise_1.isPromise(duration)) {
duration = fromPromise_1.PromiseObservable.create(duration);
}
this.add(this.throttled = duration._subscribe(new ThrottleDurationSelectorSubscriber(this)));
destination.next(value);
}
};
ThrottleSubscriber.prototype._error = function (err) {
this.clearThrottle();
_super.prototype._error.call(this, err);
};
ThrottleSubscriber.prototype._complete = function () {
this.clearThrottle();
_super.prototype._complete.call(this);
};
ThrottleSubscriber.prototype.clearThrottle = function () {
var throttled = this.throttled;
if (throttled) {
throttled.unsubscribe();
this.remove(throttled);
this.throttled = null;
}
};
return ThrottleSubscriber;
})(Subscriber_1.Subscriber);
var ThrottleDurationSelectorSubscriber = (function (_super) {
__extends(ThrottleDurationSelectorSubscriber, _super);
function ThrottleDurationSelectorSubscriber(parent) {
_super.call(this, null);
this.parent = parent;
}
ThrottleDurationSelectorSubscriber.prototype._next = function (unused) {
this.parent.clearThrottle();
};
ThrottleDurationSelectorSubscriber.prototype._error = function (err) {
this.parent.error(err);
};
ThrottleDurationSelectorSubscriber.prototype._complete = function () {
this.parent.clearThrottle();
};
return ThrottleDurationSelectorSubscriber;
})(Subscriber_1.Subscriber);
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