mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
336876509c
Summary: This is a core part of the Timeline feature (aka Time Travel Debugger). With these new primitives, any external library can initiate "saving" all the previous interface changes (commits) and unwind to any previous one (in order to introspect and validate visual side-effects). The next diff in the stack will implement UI for this feature integrated into Debug menu on iOS. Changelog: [Internal] Fabric-specific internal change. Reviewed By: sammy-SC Differential Revision: D25926660 fbshipit-source-id: 2e5f6892351d3053db8f64c1cf6ff445b0867ad7
64 lines
1.7 KiB
C++
64 lines
1.7 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 <memory>
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#include <vector>
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#include <better/mutex.h>
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#include <react/renderer/core/ReactPrimitives.h>
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#include <react/renderer/timeline/TimelineSnapshot.h>
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#include <react/renderer/uimanager/UIManagerCommitHook.h>
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namespace facebook {
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namespace react {
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class UIManager;
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class Timeline final {
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friend class TimelineHandler;
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friend class TimelineController;
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public:
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Timeline(ShadowTree const &shadowTree);
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private:
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#pragma mark - Private methods to be used by `TimelineHandler`.
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void pause() const noexcept;
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void resume() const noexcept;
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bool isPaused() const noexcept;
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TimelineFrame::List getFrames() const noexcept;
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TimelineFrame getCurrentFrame() const noexcept;
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void rewind(TimelineFrame const &frame) const noexcept;
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SurfaceId getSurfaceId() const noexcept;
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#pragma mark - Private methods to be used by `TimelineController`.
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RootShadowNode::Unshared shadowTreeWillCommit(
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ShadowTree const &shadowTree,
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RootShadowNode::Shared const &oldRootShadowNode,
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RootShadowNode::Unshared const &newRootShadowNode) const noexcept;
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#pragma mark - Private & Internal
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void record(RootShadowNode::Shared const &rootShadowNode) const noexcept;
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void rewind(TimelineSnapshot const &snapshot) const noexcept;
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mutable std::recursive_mutex mutex_;
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mutable ShadowTree const *shadowTree_{nullptr};
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mutable int currentSnapshotIndex_{0};
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mutable TimelineSnapshot::List snapshots_{};
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mutable bool paused_{false};
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mutable bool rewinding_{false};
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};
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} // namespace react
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} // namespace facebook
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