react-native/Libraries/Device/RCTDeviceEventEmitter.js

50 lines
1.7 KiB
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule RCTDeviceEventEmitter
* @flow
*/
'use strict';
const EventEmitter = require('EventEmitter');
const BatchedBridge = require('BatchedBridge');
import type EmitterSubscription from 'EmitterSubscription';
/**
* Deprecated - subclass NativeEventEmitter to create granular event modules instead of
* adding all event listeners directly to RCTDeviceEventEmitter.
*/
class RCTDeviceEventEmitter extends EventEmitter {
addListener(eventType: string, listener: any, context: ?Object): EmitterSubscription {
if (eventType.lastIndexOf('statusBar', 0) === 0) {
console.warn('`%s` event should be registered via the StatusBarIOS module', eventType);
return require('StatusBarIOS').addListener(eventType, listener, context);
}
if (eventType.lastIndexOf('keyboard', 0) === 0) {
console.warn('`%s` event should be registered via the Keyboard module', eventType);
return require('Keyboard').addListener(eventType, listener, context);
}
return super.addListener(eventType, listener, context);
}
nativeAddListener(eventType: string, listener: any, context: ?Object): EmitterSubscription {
return super.addListener(eventType, listener, context);
}
}
RCTDeviceEventEmitter = new RCTDeviceEventEmitter();
BatchedBridge.registerCallableModule(
'RCTDeviceEventEmitter',
RCTDeviceEventEmitter
);
module.exports = RCTDeviceEventEmitter;