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
78 lines
2.1 KiB
C++
78 lines
2.1 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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#include "TimelineController.h"
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#include <react/renderer/mounting/ShadowTree.h>
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#include <react/renderer/uimanager/UIManager.h>
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namespace facebook {
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namespace react {
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TimelineHandler TimelineController::enable(SurfaceId surfaceId) const {
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assert(uiManager_);
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auto shadowTreePtr = (ShadowTree const *){};
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uiManager_->getShadowTreeRegistry().visit(
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surfaceId,
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[&](ShadowTree const &shadowTree) { shadowTreePtr = &shadowTree; });
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assert(shadowTreePtr);
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{
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std::unique_lock<better::shared_mutex> lock(timelinesMutex_);
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auto timeline = std::make_unique<Timeline>(*shadowTreePtr);
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auto handler = TimelineHandler{*timeline};
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timelines_.emplace(surfaceId, std::move(timeline));
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return handler;
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}
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}
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void TimelineController::disable(TimelineHandler &&handler) const {
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std::unique_lock<better::shared_mutex> lock(timelinesMutex_);
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auto iterator = timelines_.find(handler.getSurfaceId());
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assert(iterator != timelines_.end());
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timelines_.erase(iterator);
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handler.release();
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}
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void TimelineController::commitHookWasRegistered(
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UIManager const &uiManager) const noexcept {
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uiManager_ = &uiManager;
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}
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void TimelineController::commitHookWasUnregistered(
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UIManager const &uiManager) const noexcept {
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uiManager_ = nullptr;
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}
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RootShadowNode::Unshared TimelineController::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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std::shared_lock<better::shared_mutex> lock(timelinesMutex_);
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assert(uiManager_ && "`uiManager_` must not be `nullptr`.");
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lastUpdatedSurface_ = shadowTree.getSurfaceId();
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auto iterator = timelines_.find(shadowTree.getSurfaceId());
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if (iterator == timelines_.end()) {
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return newRootShadowNode;
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}
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auto &timeline = *iterator->second;
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return timeline.shadowTreeWillCommit(
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shadowTree, oldRootShadowNode, newRootShadowNode);
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}
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} // namespace react
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} // namespace facebook
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