Ryan Gomba c858420b2d Fix NativeAnimation invalidation & races on iOS
Summary:
This diff attempts to fix a number of iOS native animation bugs related to improper node invalidation and a race with view creation. The major issues were presented in #9120 as problems 3 and 3b, but I'll recap here:

The invalidation model we use is overly complicated and incomplete. The proper combination of `_needsUpdate` and `_hasUpdated` will result in nodes values being recomputed. However, we do not invalidate nodes in all the places we should, e.g. if we create a new view and attach it to an existing value node (see example in #9120). This diff chooses to remove the `_hasUpdated` flag, and simply relies on the `_needsUpdate` flag to mark a node as dirty.

We mark nodes as dirty when they are:
- created
- updated
- attached to new parents
- detached from old parents
- attached to a view

Calling `updateNodeIfNecessary` will, if necessary, compute all invalidated parent values before recomputing the node value. It will then apply the update, and mark the no
Closes https://github.com/facebook/react-native/pull/10663

Differential Revision: D4120301

Pulled By: mkonicek

fbshipit-source-id: e247afcb5d8c15999b8328c664b9f7e764d76a75
2016-11-28 11:13:31 -08:00

39 lines
1.1 KiB
Objective-C

/**
* 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.
*/
#import <Foundation/Foundation.h>
#import <CoreGraphics/CoreGraphics.h>
#import <React/RCTBridgeModule.h>
@class RCTValueAnimatedNode;
NS_ASSUME_NONNULL_BEGIN
@protocol RCTAnimationDriver <NSObject>
@property (nonatomic, readonly) NSNumber *animationId;
@property (nonatomic, readonly) RCTValueAnimatedNode *valueNode;
@property (nonatomic, readonly) BOOL animationHasBegun;
@property (nonatomic, readonly) BOOL animationHasFinished;
- (instancetype)initWithId:(NSNumber *)animationId
config:(NSDictionary *)config
forNode:(RCTValueAnimatedNode *)valueNode
callBack:(nullable RCTResponseSenderBlock)callback;
- (void)startAnimation;
- (void)stopAnimation;
- (void)stepAnimation;
- (void)removeAnimation;
NS_ASSUME_NONNULL_END
@end