8b17459254
Summary: Move PtrJNodeMap to header file so that it can be accessed in events subscribers outside yoga Reviewed By: davidaurelio Differential Revision: D15602627 fbshipit-source-id: bb5bd5bbf8dcb279f5f87a4fd7287909d4e895d8
81 lines
1.6 KiB
C++
81 lines
1.6 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 LICENSE
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* file in the root directory of this source tree.
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*/
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#pragma once
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#include <functional>
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#include <vector>
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struct YGConfig;
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struct YGNode;
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namespace facebook {
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namespace yoga {
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struct Event {
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enum Type {
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NodeAllocation,
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NodeDeallocation,
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NodeLayout,
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LayoutPassStart,
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LayoutPassEnd
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};
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class Data;
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using Subscriber = void(const YGNode&, Type, Data);
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using Subscribers = std::vector<std::function<Subscriber>>;
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template <Type E>
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struct TypedData {};
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class Data {
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const void* data_;
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public:
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template <Type E>
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Data(const TypedData<E>& data) : data_{&data} {}
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template <Type E>
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const TypedData<E>& get() const {
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return *static_cast<const TypedData<E>*>(data_);
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};
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};
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static void reset();
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static void subscribe(std::function<Subscriber>&& subscriber);
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template <Type E>
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static void publish(const YGNode& node, const TypedData<E>& eventData = {}) {
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publish(node, E, Data{eventData});
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}
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template <Type E>
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static void publish(const YGNode* node, const TypedData<E>& eventData = {}) {
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publish<E>(*node, eventData);
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}
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private:
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static void publish(const YGNode&, Type, const Data&);
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};
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template <>
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struct Event::TypedData<Event::NodeAllocation> {
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YGConfig* config;
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};
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template <>
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struct Event::TypedData<Event::NodeDeallocation> {
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YGConfig* config;
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};
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template <>
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struct Event::TypedData<Event::LayoutPassEnd> {
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void* layoutContext;
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};
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} // namespace yoga
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} // namespace facebook
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