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node_modules/rxjs/_esm5/internal/observable/ConnectableObservable.js

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+/** PURE_IMPORTS_START tslib,_Subject,_Observable,_Subscriber,_Subscription,_operators_refCount PURE_IMPORTS_END */
+import * as tslib_1 from "tslib";
+import { SubjectSubscriber } from '../Subject';
+import { Observable } from '../Observable';
+import { Subscriber } from '../Subscriber';
+import { Subscription } from '../Subscription';
+import { refCount as higherOrderRefCount } from '../operators/refCount';
+var ConnectableObservable = /*@__PURE__*/ (function (_super) {
+    tslib_1.__extends(ConnectableObservable, _super);
+    function ConnectableObservable(source, subjectFactory) {
+        var _this = _super.call(this) || this;
+        _this.source = source;
+        _this.subjectFactory = subjectFactory;
+        _this._refCount = 0;
+        _this._isComplete = false;
+        return _this;
+    }
+    ConnectableObservable.prototype._subscribe = function (subscriber) {
+        return this.getSubject().subscribe(subscriber);
+    };
+    ConnectableObservable.prototype.getSubject = function () {
+        var subject = this._subject;
+        if (!subject || subject.isStopped) {
+            this._subject = this.subjectFactory();
+        }
+        return this._subject;
+    };
+    ConnectableObservable.prototype.connect = function () {
+        var connection = this._connection;
+        if (!connection) {
+            this._isComplete = false;
+            connection = this._connection = new Subscription();
+            connection.add(this.source
+                .subscribe(new ConnectableSubscriber(this.getSubject(), this)));
+            if (connection.closed) {
+                this._connection = null;
+                connection = Subscription.EMPTY;
+            }
+        }
+        return connection;
+    };
+    ConnectableObservable.prototype.refCount = function () {
+        return higherOrderRefCount()(this);
+    };
+    return ConnectableObservable;
+}(Observable));
+export { ConnectableObservable };
+export var connectableObservableDescriptor = /*@__PURE__*/ (function () {
+    var connectableProto = ConnectableObservable.prototype;
+    return {
+        operator: { value: null },
+        _refCount: { value: 0, writable: true },
+        _subject: { value: null, writable: true },
+        _connection: { value: null, writable: true },
+        _subscribe: { value: connectableProto._subscribe },
+        _isComplete: { value: connectableProto._isComplete, writable: true },
+        getSubject: { value: connectableProto.getSubject },
+        connect: { value: connectableProto.connect },
+        refCount: { value: connectableProto.refCount }
+    };
+})();
+var ConnectableSubscriber = /*@__PURE__*/ (function (_super) {
+    tslib_1.__extends(ConnectableSubscriber, _super);
+    function ConnectableSubscriber(destination, connectable) {
+        var _this = _super.call(this, destination) || this;
+        _this.connectable = connectable;
+        return _this;
+    }
+    ConnectableSubscriber.prototype._error = function (err) {
+        this._unsubscribe();
+        _super.prototype._error.call(this, err);
+    };
+    ConnectableSubscriber.prototype._complete = function () {
+        this.connectable._isComplete = true;
+        this._unsubscribe();
+        _super.prototype._complete.call(this);
+    };
+    ConnectableSubscriber.prototype._unsubscribe = function () {
+        var connectable = this.connectable;
+        if (connectable) {
+            this.connectable = null;
+            var connection = connectable._connection;
+            connectable._refCount = 0;
+            connectable._subject = null;
+            connectable._connection = null;
+            if (connection) {
+                connection.unsubscribe();
+            }
+        }
+    };
+    return ConnectableSubscriber;
+}(SubjectSubscriber));
+var RefCountOperator = /*@__PURE__*/ (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 = /*@__PURE__*/ (function (_super) {
+    tslib_1.__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));
+//# sourceMappingURL=ConnectableObservable.js.map