react-native/Libraries/NativeAnimation/Drivers/RCTEventAnimation.m

39 lines
925 B
Objective-C

/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RCTEventAnimation.h"
@implementation RCTEventAnimation
{
NSArray<NSString *> *_eventPath;
}
- (instancetype)initWithEventPath:(NSArray<NSString *> *)eventPath
valueNode:(RCTValueAnimatedNode *)valueNode
{
if ((self = [super init])) {
_eventPath = eventPath;
_valueNode = valueNode;
}
return self;
}
- (void)updateWithEvent:(id<RCTEvent>)event
{
NSArray *args = event.arguments;
// Supported events args are in the following order: viewTag, eventName, eventData.
id currentValue = args[2];
for (NSString *key in _eventPath) {
currentValue = [currentValue valueForKey:key];
}
_valueNode.value = ((NSNumber *)currentValue).doubleValue;
[_valueNode setNeedsUpdate];
}
@end