mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
50c59aa7f8
Summary: This change in the method signature allows removing usage of `shared_from_this()`. After this change we will have only one usage of `shared_from_this()`. Changelog: [Internal] Small Fabric-specific optimization. Reviewed By: sammy-SC Differential Revision: D17973956 fbshipit-source-id: 19818b0855565d872005062ba2992718ca89b372
135 lines
4.4 KiB
C++
135 lines
4.4 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <react/components/view/ViewEventEmitter.h>
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#include <react/components/view/ViewProps.h>
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#include <react/components/view/YogaLayoutableShadowNode.h>
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#include <react/core/ConcreteShadowNode.h>
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#include <react/core/LayoutableShadowNode.h>
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#include <react/core/ShadowNode.h>
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#include <react/core/ShadowNodeFragment.h>
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#include <react/debug/DebugStringConvertibleItem.h>
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namespace facebook {
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namespace react {
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/*
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* Template for all <View>-like classes (classes which have all same props
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* as <View> and similar basic behaviour).
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* For example: <Paragraph>, <Image>, but not <Text>, <RawText>.
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*/
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template <
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const char *concreteComponentName,
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typename ViewPropsT = ViewProps,
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typename ViewEventEmitterT = ViewEventEmitter,
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typename... Ts>
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class ConcreteViewShadowNode : public ConcreteShadowNode<
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concreteComponentName,
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ViewPropsT,
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ViewEventEmitterT,
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Ts...>,
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public YogaLayoutableShadowNode {
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static_assert(
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std::is_base_of<ViewProps, ViewPropsT>::value,
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"ViewPropsT must be a descendant of ViewProps");
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static_assert(
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std::is_base_of<YogaStylableProps, ViewPropsT>::value,
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"ViewPropsT must be a descendant of YogaStylableProps");
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static_assert(
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std::is_base_of<AccessibilityProps, ViewPropsT>::value,
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"ViewPropsT must be a descendant of AccessibilityProps");
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public:
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using BaseShadowNode = ConcreteShadowNode<
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concreteComponentName,
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ViewPropsT,
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ViewEventEmitterT,
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Ts...>;
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using ConcreteViewProps = ViewPropsT;
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ConcreteViewShadowNode(
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const ShadowNodeFragment &fragment,
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const ComponentDescriptor &componentDescriptor)
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: BaseShadowNode(fragment, componentDescriptor),
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YogaLayoutableShadowNode() {
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YogaLayoutableShadowNode::setProps(
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*std::static_pointer_cast<const ConcreteViewProps>(fragment.props));
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YogaLayoutableShadowNode::setChildren(
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BaseShadowNode::template getChildrenSlice<YogaLayoutableShadowNode>());
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};
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ConcreteViewShadowNode(
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const ShadowNode &sourceShadowNode,
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const ShadowNodeFragment &fragment)
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: BaseShadowNode(sourceShadowNode, fragment),
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YogaLayoutableShadowNode(
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static_cast<const ConcreteViewShadowNode &>(sourceShadowNode)) {
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if (fragment.props) {
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YogaLayoutableShadowNode::setProps(
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*std::static_pointer_cast<const ConcreteViewProps>(fragment.props));
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}
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if (fragment.children) {
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YogaLayoutableShadowNode::setChildren(
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BaseShadowNode::template getChildrenSlice<
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YogaLayoutableShadowNode>());
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}
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};
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void appendChild(const SharedShadowNode &child) {
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ensureUnsealed();
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ShadowNode::appendChild(child);
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auto nonConstChild = const_cast<ShadowNode *>(child.get());
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auto yogaLayoutableChild =
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dynamic_cast<YogaLayoutableShadowNode *>(nonConstChild);
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if (yogaLayoutableChild) {
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YogaLayoutableShadowNode::appendChild(yogaLayoutableChild);
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}
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}
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LayoutableShadowNode *cloneAndReplaceChild(
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LayoutableShadowNode *child,
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int suggestedIndex = -1) override {
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ensureUnsealed();
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auto childShadowNode = static_cast<const ConcreteViewShadowNode *>(child);
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auto clonedChildShadowNode =
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std::static_pointer_cast<ConcreteViewShadowNode>(
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childShadowNode->clone({}));
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ShadowNode::replaceChild(
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*childShadowNode, clonedChildShadowNode, suggestedIndex);
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return clonedChildShadowNode.get();
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}
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Transform getTransform() const override {
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return BaseShadowNode::getProps()->transform;
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}
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#pragma mark - DebugStringConvertible
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#if RN_DEBUG_STRING_CONVERTIBLE
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SharedDebugStringConvertibleList getDebugProps() const override {
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auto list = SharedDebugStringConvertibleList{};
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auto basePropsList = ShadowNode::getDebugProps();
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std::move(
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basePropsList.begin(), basePropsList.end(), std::back_inserter(list));
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list.push_back(std::make_shared<DebugStringConvertibleItem>(
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"layout", "", LayoutableShadowNode::getDebugProps()));
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return list;
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}
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#endif
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};
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} // namespace react
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} // namespace facebook
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