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c25c98c00c
Summary: public Currently, we wait to invoke `-flushUIBlocks` until the JavaScript batch to native has completed. This means we may be waiting an unnecessarily long time to perform view hierarchy changes and prop changes. By instead invoking this after each chunk of enqueued UI blocks, we can perform some updates more eagerly, increasing our utilization of the main thread while splitting up the amount of time we spend running upon it. This shouldn't affect layout, which is still tied to `-batchDidComplete`, so any visual inconsistencies should be limited to prop changes, which seems acceptable for the dramatic improvement in performance. Reviewed By: javache Differential Revision: D2658552 fb-gh-sync-id: 6d4560e21d7da1b02d2f30d1860d60735f11c4b5
103 lines
3.1 KiB
Objective-C
103 lines
3.1 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import <UIKit/UIKit.h>
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#import "RCTBridge.h"
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#import "RCTBridgeModule.h"
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#import "RCTInvalidating.h"
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#import "RCTViewManager.h"
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/**
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* Posted right before re-render happens. This is a chance for views to invalidate their state so
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* next render cycle will pick up updated views and layout appropriately.
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*/
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RCT_EXTERN NSString *const RCTUIManagerWillUpdateViewsDueToContentSizeMultiplierChangeNotification;
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/**
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* Posted whenever a new root view is registered with RCTUIManager. The userInfo property
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* will contain a RCTUIManagerRootViewKey with the registered root view.
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*/
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RCT_EXTERN NSString *const RCTUIManagerDidRegisterRootViewNotification;
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/**
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* Posted whenever a root view is removed from the RCTUIManager. The userInfo property
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* will contain a RCTUIManagerRootViewKey with the removed root view.
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*/
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RCT_EXTERN NSString *const RCTUIManagerDidRemoveRootViewNotification;
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/**
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* Key for the root view property in the above notifications
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*/
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RCT_EXTERN NSString *const RCTUIManagerRootViewKey;
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@protocol RCTScrollableProtocol;
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/**
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* The RCTUIManager is the module responsible for updating the view hierarchy.
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*/
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@interface RCTUIManager : NSObject <RCTBridgeModule, RCTInvalidating>
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/**
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* Register a root view with the RCTUIManager.
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*/
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- (void)registerRootView:(UIView *)rootView;
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/**
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* Gets the view associated with a reactTag.
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*/
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- (UIView *)viewForReactTag:(NSNumber *)reactTag;
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/**
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* Update the frame of a view. This might be in response to a screen rotation
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* or some other layout event outside of the React-managed view hierarchy.
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*/
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- (void)setFrame:(CGRect)frame forView:(UIView *)view;
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/**
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* Update the background color of a root view. This is usually triggered by
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* manually setting the background color of the root view with native code.
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*/
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- (void)setBackgroundColor:(UIColor *)color forRootView:(UIView *)rootView;
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/**
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* Schedule a block to be executed on the UI thread. Useful if you need to execute
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* view logic after all currently queued view updates have completed.
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*/
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- (void)addUIBlock:(RCTViewManagerUIBlock)block;
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/**
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* The view that is currently first responder, according to the JS context.
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*/
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+ (UIView *)JSResponder;
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/**
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* Normally, UI changes are not applied until the complete batch of method
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* invocations from JavaScript to native has completed.
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*
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* Setting this to YES will flush UI changes sooner, which could potentially
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* result in inconsistent UI updates.
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*
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* The default is NO (recommended).
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*/
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@property (atomic, assign) BOOL unsafeFlushUIChangesBeforeBatchEnds;
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@end
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/**
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* This category makes the current RCTUIManager instance available via the
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* RCTBridge, which is useful for RCTBridgeModules or RCTViewManagers that
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* need to access the RCTUIManager.
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*/
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@interface RCTBridge (RCTUIManager)
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@property (nonatomic, readonly) RCTUIManager *uiManager;
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@end
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