refCount.js
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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 Subscriber_1 = require("../Subscriber");
function refCount() {
return function refCountOperatorFunction(source) {
return source.lift(new RefCountOperator(source));
};
}
exports.refCount = refCount;
var RefCountOperator = (function () {
function RefCountOperator(connectable) {
this.connectable = connectable;
}
RefCountOperator.prototype.call = function (subscriber, source) {
var connectable = this.connectable;
connectable._refCount++;
var refCounter = new RefCountSubscriber(subscriber, connectable);
var subscription = source.subscribe(refCounter);
if (!refCounter.closed) {
refCounter.connection = connectable.connect();
}
return subscription;
};
return RefCountOperator;
}());
var RefCountSubscriber = (function (_super) {
__extends(RefCountSubscriber, _super);
function RefCountSubscriber(destination, connectable) {
var _this = _super.call(this, destination) || this;
_this.connectable = connectable;
return _this;
}
RefCountSubscriber.prototype._unsubscribe = function () {
var connectable = this.connectable;
if (!connectable) {
this.connection = null;
return;
}
this.connectable = null;
var refCount = connectable._refCount;
if (refCount <= 0) {
this.connection = null;
return;
}
connectable._refCount = refCount - 1;
if (refCount > 1) {
this.connection = null;
return;
}
var connection = this.connection;
var sharedConnection = connectable._connection;
this.connection = null;
if (sharedConnection && (!connection || sharedConnection === connection)) {
sharedConnection.unsubscribe();
}
};
return RefCountSubscriber;
}(Subscriber_1.Subscriber));
//# sourceMappingURL=refCount.js.map