react-native/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.m

121 lines
2.4 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 "RCTAnimatedNode.h"
#import <React/RCTDefines.h>
@implementation RCTAnimatedNode
{
NSMutableDictionary<NSNumber *, RCTAnimatedNode *> *_childNodes;
NSMutableDictionary<NSNumber *, RCTAnimatedNode *> *_parentNodes;
}
- (instancetype)initWithTag:(NSNumber *)tag
config:(NSDictionary<NSString *, id> *)config
{
if ((self = [super init])) {
_nodeTag = tag;
_config = [config copy];
}
return self;
}
RCT_NOT_IMPLEMENTED(- (instancetype)init)
- (NSDictionary<NSNumber *, RCTAnimatedNode *> *)childNodes
{
return _childNodes;
}
- (NSDictionary<NSNumber *, RCTAnimatedNode *> *)parentNodes
{
return _parentNodes;
}
- (void)addChild:(RCTAnimatedNode *)child
{
if (!_childNodes) {
_childNodes = [NSMutableDictionary new];
}
if (child) {
_childNodes[child.nodeTag] = child;
[child onAttachedToNode:self];
}
}
- (void)removeChild:(RCTAnimatedNode *)child
{
if (!_childNodes) {
return;
}
if (child) {
[_childNodes removeObjectForKey:child.nodeTag];
[child onDetachedFromNode:self];
}
}
- (void)onAttachedToNode:(RCTAnimatedNode *)parent
{
if (!_parentNodes) {
_parentNodes = [NSMutableDictionary new];
}
if (parent) {
_parentNodes[parent.nodeTag] = parent;
}
}
- (void)onDetachedFromNode:(RCTAnimatedNode *)parent
{
if (!_parentNodes) {
return;
}
if (parent) {
[_parentNodes removeObjectForKey:parent.nodeTag];
}
}
- (void)detachNode
{
for (RCTAnimatedNode *parent in _parentNodes.allValues) {
[parent removeChild:self];
}
for (RCTAnimatedNode *child in _childNodes.allValues) {
[self removeChild:child];
}
}
- (void)setNeedsUpdate
{
_needsUpdate = YES;
for (RCTAnimatedNode *child in _childNodes.allValues) {
[child setNeedsUpdate];
}
}
- (void)updateNodeIfNecessary
{
if (_needsUpdate) {
for (RCTAnimatedNode *parent in _parentNodes.allValues) {
[parent updateNodeIfNecessary];
}
[self performUpdate];
}
}
- (void)performUpdate
{
_needsUpdate = NO;
// To be overidden by subclasses
// This method is called on a node only if it has been marked for update
// during the current update loop
}
@end