Files
react-native/React/Modules/RCTEventEmitter.h
T
Peter Argany 2c40cc714c Make RCTEventEmitter a RCTJSInvokerModule [2/n]
Summary:
Diff 1/N explained how calls to `[_bridge enqueueJSCall:]` can be replaced with `_invokeJS` in a bridgeless world.

This diff replaces RCTEventEmitter's usage of `enqueueJSCall` if the bridge isn't available.

Changelog: [Internal][iOS] Make RCTEventEmitter a RCTJSInvokerModule

Reviewed By: RSNara

Differential Revision: D18941955

fbshipit-source-id: 1b81e46585432e005cff5aa0ab4d151f50ea051b
2019-12-23 13:52:03 -08:00

44 lines
1.2 KiB
Objective-C

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import <React/RCTBridge.h>
#import <React/RCTJSInvokerModule.h>
/**
* RCTEventEmitter is an abstract base class to be used for modules that emit
* events to be observed by JS.
*/
@interface RCTEventEmitter : NSObject <RCTBridgeModule, RCTJSInvokerModule>
@property (nonatomic, weak) RCTBridge *bridge;
/**
* Override this method to return an array of supported event names. Attempting
* to observe or send an event that isn't included in this list will result in
* an error.
*/
- (NSArray<NSString *> *)supportedEvents;
/**
* Send an event that does not relate to a specific view, e.g. a navigation
* or data update notification.
*/
- (void)sendEventWithName:(NSString *)name body:(id)body;
/**
* These methods will be called when the first observer is added and when the
* last observer is removed (or when dealloc is called), respectively. These
* should be overridden in your subclass in order to start/stop sending events.
*/
- (void)startObserving;
- (void)stopObserving;
- (void)addListener:(NSString *)eventName;
- (void)removeListeners:(double)count;
@end