mirror of
https://github.com/status-im/react-native.git
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2a3025da97
Summary: This implements `EventHandlers` abstract class (aka "Events Guy") which encapsulates `eventDispatcher` and `instanceHandle` (and ownership of future `eventTarget`), all of this as part of existing {ShadowNode + Props + LayoutMetrics + LocalData + Descriptor + (and now) EventHandlers} infra. (We don't plan to add anything else to this model. Ever.)
Reviewed By: fkgozali
Differential Revision: D8053351
fbshipit-source-id: 1dd9ccbcbe5a2eb284b59ea351dc8beca645e8bf
100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
// Copyright 2004-present Facebook. All Rights Reserved.
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#include "Scheduler.h"
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#include <fabric/core/LayoutContext.h>
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#include <fabric/scrollview/ScrollViewComponentDescriptor.h>
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#include <fabric/text/ParagraphComponentDescriptor.h>
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#include <fabric/text/RawTextComponentDescriptor.h>
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#include <fabric/text/TextComponentDescriptor.h>
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#include <fabric/uimanager/ComponentDescriptorRegistry.h>
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#include <fabric/uimanager/FabricUIManager.h>
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#include <fabric/view/ViewComponentDescriptor.h>
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#include <fabric/view/ViewProps.h>
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#include <fabric/view/ViewShadowNode.h>
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#include "ComponentDescriptorFactory.h"
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#include "Differentiator.h"
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namespace facebook {
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namespace react {
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Scheduler::Scheduler() {
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eventDispatcher_ = std::make_shared<SchedulerEventDispatcher>();
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auto componentDescriptorRegistry = ComponentDescriptorFactory::buildRegistry(eventDispatcher_);
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uiManager_ = std::make_shared<FabricUIManager>(componentDescriptorRegistry);
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uiManager_->setDelegate(this);
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}
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Scheduler::~Scheduler() {
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uiManager_->setDelegate(nullptr);
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}
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void Scheduler::registerRootTag(Tag rootTag) {
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auto &&shadowTree = std::make_shared<ShadowTree>(rootTag);
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shadowTree->setDelegate(this);
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shadowTreeRegistry_.insert({rootTag, shadowTree});
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}
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void Scheduler::unregisterRootTag(Tag rootTag) {
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auto &&iterator = shadowTreeRegistry_.find(rootTag);
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auto &&shadowTree = iterator->second;
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assert(shadowTree);
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shadowTree->setDelegate(nullptr);
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shadowTreeRegistry_.erase(iterator);
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}
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Size Scheduler::measure(const Tag &rootTag, const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) const {
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auto &&shadowTree = shadowTreeRegistry_.at(rootTag);
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assert(shadowTree);
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return shadowTree->measure(layoutConstraints, layoutContext);
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}
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void Scheduler::constraintLayout(const Tag &rootTag, const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) {
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auto &&shadowTree = shadowTreeRegistry_.at(rootTag);
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assert(shadowTree);
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return shadowTree->constraintLayout(layoutConstraints, layoutContext);
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}
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#pragma mark - Delegate
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void Scheduler::setDelegate(SchedulerDelegate *delegate) {
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delegate_ = delegate;
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}
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SchedulerDelegate *Scheduler::getDelegate() const {
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return delegate_;
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}
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#pragma mark - ShadowTreeDelegate
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void Scheduler::shadowTreeDidCommit(const SharedShadowTree &shadowTree, const TreeMutationInstructionList &instructions) {
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if (delegate_) {
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delegate_->schedulerDidComputeMutationInstructions(shadowTree->getRootTag(), instructions);
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}
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}
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#pragma mark - UIManagerDelegate
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void Scheduler::uiManagerDidFinishTransaction(Tag rootTag, const SharedShadowNodeUnsharedList &rootChildNodes) {
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auto &&iterator = shadowTreeRegistry_.find(rootTag);
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auto &&shadowTree = iterator->second;
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assert(shadowTree);
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return shadowTree->complete(rootChildNodes);
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}
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void Scheduler::uiManagerDidCreateShadowNode(const SharedShadowNode &shadowNode) {
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if (delegate_) {
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delegate_->schedulerDidRequestPreliminaryViewAllocation(shadowNode->getComponentName());
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}
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}
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#pragma mark - Deprecated
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std::shared_ptr<FabricUIManager> Scheduler::getUIManager_DO_NOT_USE() {
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return uiManager_;
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}
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} // namespace react
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} // namespace facebook
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