mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Ramanpreet Nara
9f69c922cb
Summary: RCTBaseViewController uses RCTRootView.bridge to call RCTViewEventEmitter.emit. ## Changes - RCTEventDispatcher now exposes a method to dispatch RCTViewEventEmitter events. - RCTRootView (for paper), and RCTSurfaceHostingProxyRootView (for fabric and bridgeless mode) now exports the RCTEventDispatcher by grabbing it from the bridge - RCTBaseViewController now uses the event dispatcher exported from RCTRootView to dispatch the RCTViewEventEmitter event. ## Benefits - RCTBaseViewController no longer uses the bridge to dispatch RCTViewEventEmitter events - In the future, we'll make RCTSurfaceHostingProxyRootView work with bridgeless mode, which'll allow us to remove the bridge/bridgeless fork in RCTBaseViewController. Changelog: [Internal] Reviewed By: sammy-SC Differential Revision: D30434884 fbshipit-source-id: d961a56ac2abc08a661f8fe7c37926f219b731d0
130 lines
3.4 KiB
Objective-C
130 lines
3.4 KiB
Objective-C
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import <UIKit/UIKit.h>
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#import <React/RCTBridge.h>
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/**
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* The threshold at which text inputs will start warning that the JS thread
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* has fallen behind (resulting in poor input performance, missed keys, etc.)
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*/
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RCT_EXTERN const NSInteger RCTTextUpdateLagWarningThreshold;
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/**
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* Takes an input event name and normalizes it to the form that is required
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* by the events system (currently that means starting with the "top" prefix,
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* but that's an implementation detail that may change in future).
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*/
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RCT_EXTERN NSString *RCTNormalizeInputEventName(NSString *eventName);
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typedef NS_ENUM(NSInteger, RCTTextEventType) {
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RCTTextEventTypeFocus,
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RCTTextEventTypeBlur,
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RCTTextEventTypeChange,
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RCTTextEventTypeSubmit,
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RCTTextEventTypeEnd,
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RCTTextEventTypeKeyPress
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};
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@protocol RCTEvent <NSObject>
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@required
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@property (nonatomic, strong, readonly) NSNumber *viewTag;
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@property (nonatomic, copy, readonly) NSString *eventName;
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- (BOOL)canCoalesce;
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/** used directly for doing a JS call */
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+ (NSString *)moduleDotMethod;
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/** must contain only JSON compatible values */
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- (NSArray *)arguments;
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@optional
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/**
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* Coalescing related methods must only be implemented if canCoalesce
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* returns YES.
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*/
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@property (nonatomic, assign, readonly) uint16_t coalescingKey;
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- (id<RCTEvent>)coalesceWithEvent:(id<RCTEvent>)newEvent;
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@end
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/**
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* This protocol allows observing events dispatched by RCTEventDispatcher.
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*/
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@protocol RCTEventDispatcherObserver <NSObject>
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/**
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* Called before dispatching an event, on the same thread the event was
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* dispatched from.
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*/
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- (void)eventDispatcherWillDispatchEvent:(id<RCTEvent>)event;
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@end
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@protocol RCTJSDispatcherModule
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@property (nonatomic, copy) void (^dispatchToJSThread)(dispatch_block_t block);
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@end
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/**
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* This class wraps the -[RCTBridge enqueueJSCall:args:] method, and
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* provides some convenience methods for generating event calls.
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*/
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@protocol RCTEventDispatcherProtocol <RCTBridgeModule, RCTJSDispatcherModule>
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- (void)sendViewEventWithName:(NSString *)name reactTag:(NSNumber *)reactTag;
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/**
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* Deprecated, do not use.
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*/
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- (void)sendAppEventWithName:(NSString *)name body:(id)body __deprecated_msg("Subclass RCTEventEmitter instead");
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/**
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* Deprecated, do not use.
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*/
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- (void)sendDeviceEventWithName:(NSString *)name body:(id)body __deprecated_msg("Subclass RCTEventEmitter instead");
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/**
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* Send a text input/focus event. For internal use only.
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*/
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- (void)sendTextEventWithType:(RCTTextEventType)type
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reactTag:(NSNumber *)reactTag
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text:(NSString *)text
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key:(NSString *)key
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eventCount:(NSInteger)eventCount;
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/**
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* Send a pre-prepared event object.
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*
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* Events are sent to JS as soon as the thread is free to process them.
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* If an event can be coalesced and there is another compatible event waiting, the coalescing will happen immediately.
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*/
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- (void)sendEvent:(id<RCTEvent>)event;
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/**
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* Add an event dispatcher observer.
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*/
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- (void)addDispatchObserver:(id<RCTEventDispatcherObserver>)observer;
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/**
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* Remove an event dispatcher observer.
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*/
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- (void)removeDispatchObserver:(id<RCTEventDispatcherObserver>)observer;
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@end
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@interface RCTBridge (RCTEventDispatcher)
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- (id<RCTEventDispatcherProtocol>)eventDispatcher;
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@end
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