import {Subscription} from '@reactivex/rxjs/es6/Subscription.js'

public class | source

Subscription

Direct Subclass:

Action, Subscriber

Indirect Subclass:

es6/observable/ConnectableObservable.js~ConnectableSubscriber, es6/observable/ConnectableObservable.js~RefCountSubscriber, es6/operators/refCount.js~RefCountSubscriber, es6/operators/sequenceEqual.js~SequenceEqualCompareToSubscriber, SubjectSubscriber

Represents a disposable resource, such as the execution of an Observable. A Subscription has one important method, unsubscribe, that takes no argument and just disposes the resource held by the subscription.

Additionally, subscriptions may be grouped together through the add() method, which will attach a child Subscription to the current Subscription. When a Subscription is unsubscribed, all its children (and its grandchildren) will be unsubscribed as well.

Test:

Subscription

Constructor Summary

Public Constructor
public	constructor(unsubscribe: function(): void)

Member Summary

Public Members
public	closed: boolean A flag to indicate whether this Subscription has already been unsubscribed.

Method Summary

Public Methods
public	add(teardown: TeardownLogic): Subscription Adds a tear down to be called during the unsubscribe() of this Subscription.
public	remove(subscription: Subscription): void Removes a Subscription from the internal list of subscriptions that will unsubscribe during the unsubscribe process of this Subscription.
public	unsubscribe(): void Disposes the resources held by the subscription.

Public Constructors

public constructor(unsubscribe: function(): void) source

Params:

Name	Type	Attribute	Description
unsubscribe	function(): void	optional	A function describing how to perform the disposal of resources when the `unsubscribe` method is called.

Public Members

public closed: boolean source

A flag to indicate whether this Subscription has already been unsubscribed.

Public Methods

public add(teardown: TeardownLogic): Subscription source

Adds a tear down to be called during the unsubscribe() of this Subscription.

If the tear down being added is a subscription that is already unsubscribed, is the same reference add is being called on, or is Subscription.EMPTY, it will not be added.

If this subscription is already in an closed state, the passed tear down logic will be executed immediately.

Params:

Name	Type	Attribute	Description
teardown	TeardownLogic		The additional logic to execute on teardown.

Return:

Subscription

Returns the Subscription used or created to be added to the inner subscriptions list. This Subscription can be used with remove() to remove the passed teardown logic from the inner subscriptions list.

public remove(subscription: Subscription): void source

Removes a Subscription from the internal list of subscriptions that will unsubscribe during the unsubscribe process of this Subscription.

Params:

Name	Type	Attribute	Description
subscription	Subscription		The subscription to remove.

Return:

void

public unsubscribe(): void source

Disposes the resources held by the subscription. May, for instance, cancel an ongoing Observable execution or cancel any other type of work that started when the Subscription was created.

Return:

void