144 lines
4.6 KiB
C++
144 lines
4.6 KiB
C++
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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 <fabric/components/view/AccessibleShadowNode.h>
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#include <fabric/components/view/ViewEventEmitter.h>
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#include <fabric/components/view/ViewProps.h>
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#include <fabric/components/view/YogaLayoutableShadowNode.h>
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#include <fabric/core/ConcreteShadowNode.h>
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#include <fabric/core/LayoutableShadowNode.h>
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#include <fabric/core/ShadowNode.h>
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#include <fabric/core/ShadowNodeFragment.h>
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#include <fabric/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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>
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class ConcreteViewShadowNode:
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public ConcreteShadowNode<
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concreteComponentName,
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ViewPropsT,
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ViewEventEmitterT
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>,
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public AccessibleShadowNode,
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public YogaLayoutableShadowNode {
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static_assert(std::is_base_of<ViewProps, ViewPropsT>::value, "ViewPropsT must be a descendant of ViewProps");
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static_assert(std::is_base_of<YogaStylableProps, ViewPropsT>::value, "ViewPropsT must be a descendant of YogaStylableProps");
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static_assert(std::is_base_of<AccessibilityProps, ViewPropsT>::value, "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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>;
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using ConcreteViewProps = ViewPropsT;
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ConcreteViewShadowNode(
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const ShadowNodeFragment &fragment,
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const ShadowNodeCloneFunction &cloneFunction
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):
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BaseShadowNode(
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fragment,
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cloneFunction
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),
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AccessibleShadowNode(
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std::static_pointer_cast<const ConcreteViewProps>(fragment.props)
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),
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YogaLayoutableShadowNode() {
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YogaLayoutableShadowNode::setProps(*std::static_pointer_cast<const ConcreteViewProps>(fragment.props));
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YogaLayoutableShadowNode::setChildren(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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):
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BaseShadowNode(
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sourceShadowNode,
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fragment
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),
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AccessibleShadowNode(
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static_cast<const ConcreteViewShadowNode &>(sourceShadowNode),
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std::static_pointer_cast<const ConcreteViewProps>(fragment.props)
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),
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YogaLayoutableShadowNode(
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static_cast<const ConcreteViewShadowNode &>(sourceShadowNode)
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) {
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if (fragment.props) {
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YogaLayoutableShadowNode::setProps(*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(BaseShadowNode::template getChildrenSlice<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 = 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(LayoutableShadowNode *child, 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 = std::static_pointer_cast<ConcreteViewShadowNode>(childShadowNode->clone({}));
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ShadowNode::replaceChild(childShadowNode->shared_from_this(), clonedChildShadowNode, suggestedIndex);
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return clonedChildShadowNode.get();
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}
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#pragma mark - Equality
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bool operator==(const ShadowNode& rhs) const override {
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if (!ShadowNode::operator==(rhs)) {
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return false;
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}
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const auto &other = static_cast<const ConcreteViewShadowNode&>(rhs);
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return getLayoutMetrics() == other.getLayoutMetrics();
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}
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#pragma mark - DebugStringConvertible
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SharedDebugStringConvertibleList getDebugProps() const override {
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SharedDebugStringConvertibleList list = {};
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auto basePropsList = ShadowNode::getDebugProps();
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std::move(basePropsList.begin(), basePropsList.end(), std::back_inserter(list));
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list.push_back(std::make_shared<DebugStringConvertibleItem>("layout", "", LayoutableShadowNode::getDebugProps()));
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return list;
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}
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};
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} // namespace react
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} // namespace facebook
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