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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/react-native/ReactCommon/react/renderer/uimanager
Просмотр файла: UIManagerCommitHook.h
/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#pragma once
#include <react/renderer/components/root/RootShadowNode.h>
namespace facebook::react {
class ShadowTree;
struct ShadowTreeCommitOptions;
class UIManager;
/*
* Implementing a commit hook allows to observe and alter Shadow Tree commits.
*/
class UIManagerCommitHook {
public:
/*
* Called right after the commit hook is registered or unregistered.
*/
virtual void commitHookWasRegistered(const UIManager& uiManager) noexcept = 0;
virtual void commitHookWasUnregistered(
const UIManager& uiManager) noexcept = 0;
/*
* Called right before a `ShadowTree` commits a new tree.
* The semantic of the method corresponds to a method of the same name
* from `ShadowTreeDelegate`.
*/
virtual RootShadowNode::Unshared shadowTreeWillCommit(
const ShadowTree& shadowTree,
const RootShadowNode::Shared& oldRootShadowNode,
const RootShadowNode::Unshared& newRootShadowNode,
const ShadowTreeCommitOptions& /*commitOptions*/) noexcept {
return shadowTreeWillCommit(
shadowTree, oldRootShadowNode, newRootShadowNode);
}
/*
* This is a version of `shadowTreeWillCommit` without `commitOptions` for
* backward compatibility.
*/
virtual RootShadowNode::Unshared shadowTreeWillCommit(
const ShadowTree& /*shadowTree*/,
const RootShadowNode::Shared& /*oldRootShadowNode*/,
const RootShadowNode::Unshared& newRootShadowNode) noexcept {
// No longer a pure method as subclasses are expected to implement the other
// flavor instead.
return newRootShadowNode;
}
virtual ~UIManagerCommitHook() noexcept = default;
};
} // namespace facebook::react
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