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RCTTrackingAnimatedNode.m
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RCTTrackingAnimatedNode.m
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/**
* 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 "RCTTrackingAnimatedNode.h"
#import "RCTValueAnimatedNode.h"
#import "RCTNativeAnimatedNodesManager.h"
@implementation RCTTrackingAnimatedNode {
NSNumber *_animationId;
NSNumber *_toValueNodeTag;
NSNumber *_valueNodeTag;
NSMutableDictionary *_animationConfig;
}
- (instancetype)initWithTag:(NSNumber *)tag
config:(NSDictionary<NSString *, id> *)config
{
if ((self = [super initWithTag:tag config:config])) {
_animationId = config[@"animationId"];
_toValueNodeTag = config[@"toValue"];
_valueNodeTag = config[@"value"];
_animationConfig = [NSMutableDictionary dictionaryWithDictionary:config[@"animationConfig"]];
}
return self;
}
- (void)onDetachedFromNode:(RCTAnimatedNode *)parent
{
[self.manager stopAnimation:_animationId];
[super onDetachedFromNode:parent];
}
- (void)performUpdate
{
[super performUpdate];
// change animation config's "toValue" to reflect updated value of the parent node
RCTValueAnimatedNode *node = (RCTValueAnimatedNode *)[self.parentNodes objectForKey:_toValueNodeTag];
_animationConfig[@"toValue"] = @(node.value);
[self.manager startAnimatingNode:_animationId
nodeTag:_valueNodeTag
config:_animationConfig
endCallback:nil];
}
@end