react-native/Libraries/vendor/emitter/EventSubscription.js

41 lines
914 B
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow strict-local
*/
'use strict';
import type EventSubscriptionVendor from 'EventSubscriptionVendor';
/**
* EventSubscription represents a subscription to a particular event. It can
* remove its own subscription.
*/
class EventSubscription {
eventType: string;
key: number;
subscriber: EventSubscriptionVendor;
/**
* @param {EventSubscriptionVendor} subscriber the subscriber that controls
* this subscription.
*/
constructor(subscriber: EventSubscriptionVendor) {
this.subscriber = subscriber;
}
/**
* Removes this subscription from the subscriber that controls it.
*/
remove() {
this.subscriber.removeSubscription(this);
}
}
module.exports = EventSubscription;