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https://github.com/status-im/react-native.git
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18d8c48c01
Summary: This diff changes how we expose UIManager to JavaScript realm and control ownership of it. This change should improve reliability and a thread-safety. UIManagerBinding is a HostObject which consolidate ownership of UIManager. Now JavaScript's GC controls its lifetime which eliminates the possibility of calling some JS facing methods of UIManager using a dangling pointer. Besides that, all API now imply that if the caller has a reference to jsi::Runtime, it calls the method on the proper thread (it's an implication of RuntimeExecutor design). Reviewed By: sahrens Differential Revision: D12876745 fbshipit-source-id: eb8c70317460df5b14e45031ad15fc6c8e5b5ce3
83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
// Copyright 2004-present Facebook. All Rights Reserved.
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#include "UIManager.h"
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#include <fabric/core/ShadowNodeFragment.h>
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namespace facebook {
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namespace react {
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SharedShadowNode UIManager::createNode(
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Tag tag,
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const ComponentName &name,
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SurfaceId surfaceId,
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const RawProps &rawProps,
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SharedEventTarget eventTarget) const {
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auto &componentDescriptor = componentDescriptorRegistry_->at(name);
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auto shadowNode = componentDescriptor.createShadowNode(
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{.tag = tag,
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.rootTag = surfaceId,
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.eventEmitter =
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componentDescriptor.createEventEmitter(std::move(eventTarget), tag),
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.props = componentDescriptor.cloneProps(nullptr, rawProps)});
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if (delegate_) {
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delegate_->uiManagerDidCreateShadowNode(shadowNode);
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}
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return std::const_pointer_cast<ShadowNode>(shadowNode);
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}
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SharedShadowNode UIManager::cloneNode(
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const SharedShadowNode &shadowNode,
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const SharedShadowNodeSharedList &children,
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const folly::Optional<RawProps> &rawProps) const {
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auto &componentDescriptor =
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componentDescriptorRegistry_->at(shadowNode->getComponentHandle());
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auto clonedShadowNode = componentDescriptor.cloneShadowNode(
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*shadowNode,
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{
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.props = rawProps.has_value()
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? componentDescriptor.cloneProps(
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shadowNode->getProps(), rawProps.value())
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: ShadowNodeFragment::nullSharedProps(),
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.children = children,
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});
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return std::const_pointer_cast<ShadowNode>(clonedShadowNode);
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}
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void UIManager::appendChild(
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const SharedShadowNode &parentShadowNode,
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const SharedShadowNode &childShadowNode) const {
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auto &componentDescriptor =
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componentDescriptorRegistry_->at(parentShadowNode->getComponentHandle());
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componentDescriptor.appendChild(parentShadowNode, childShadowNode);
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}
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void UIManager::completeSurface(
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SurfaceId surfaceId,
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const SharedShadowNodeUnsharedList &rootChildren) const {
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if (delegate_) {
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delegate_->uiManagerDidFinishTransaction(surfaceId, rootChildren);
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}
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}
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void UIManager::setComponentDescriptorRegistry(
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const SharedComponentDescriptorRegistry &componentDescriptorRegistry) {
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componentDescriptorRegistry_ = componentDescriptorRegistry;
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}
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void UIManager::setDelegate(UIManagerDelegate *delegate) {
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delegate_ = delegate;
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}
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UIManagerDelegate *UIManager::getDelegate() {
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return delegate_;
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}
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} // namespace react
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} // namespace facebook
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