react-native/React/Fabric/RCTSurfacePresenter.mm

211 lines
6.8 KiB
Plaintext
Raw Normal View History

/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RCTSurfacePresenter.h"
#import <React/RCTAssert.h>
#import <React/RCTBridge+Private.h>
#import <React/RCTComponentViewRegistry.h>
#import <React/RCTFabricSurface.h>
#import <React/RCTMountingManager.h>
#import <React/RCTMountingManagerDelegate.h>
#import <React/RCTScheduler.h>
#import <React/RCTSurfaceRegistry.h>
#import <React/RCTSurfaceView.h>
#import <React/RCTSurfaceView+Internal.h>
#import <React/RCTUtils.h>
#import <fabric/core/LayoutContext.h>
#import <fabric/core/LayoutConstraints.h>
#import "RCTConversions.h"
using namespace facebook::react;
@interface RCTSurfacePresenter () <RCTSchedulerDelegate, RCTMountingManagerDelegate>
@end
@implementation RCTSurfacePresenter {
RCTScheduler *_scheduler;
RCTMountingManager *_mountingManager;
RCTBridge *_bridge;
RCTBridge *_batchedBridge;
RCTSurfaceRegistry *_surfaceRegistry;
}
- (instancetype)initWithBridge:(RCTBridge *)bridge
{
if (self = [super init]) {
_bridge = bridge;
_batchedBridge = [_bridge batchedBridge] ?: _bridge;
_scheduler = [[RCTScheduler alloc] init];
_scheduler.delegate = self;
_surfaceRegistry = [[RCTSurfaceRegistry alloc] init];
_mountingManager = [[RCTMountingManager alloc] init];
_mountingManager.delegate = self;
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(handleBridgeWillReloadNotification:)
name:RCTBridgeWillReloadNotification
object:_bridge];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(handleJavaScriptDidLoadNotification:)
name:RCTJavaScriptDidLoadNotification
object:_bridge];
}
return self;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)schedulerDidComputeMutationInstructions:(facebook::react::TreeMutationInstructionList)instructions rootTag:(ReactTag)rootTag
{
[_mountingManager mutateComponentViewTreeWithMutationInstructions:instructions
rootTag:rootTag];
}
- (void)schedulerDidRequestPreliminaryViewAllocationWithComponentName:(NSString *)componentName
{
// TODO: To be implemeted.
}
#pragma mark - Internal Surface-dedicated Interface
- (void)registerSurface:(RCTFabricSurface *)surface
{
[_surfaceRegistry registerSurface:surface];
[_scheduler registerRootTag:surface.rootTag];
[self runSurface:surface];
// FIXME: Mutation instruction MUST produce instruction for root node.
[_mountingManager.componentViewRegistry dequeueComponentViewWithName:@"Root" tag:surface.rootTag];
}
- (void)unregisterSurface:(RCTFabricSurface *)surface
{
[self stopSurface:surface];
[_scheduler unregisterRootTag:surface.rootTag];
[_surfaceRegistry unregisterSurface:surface];
}
- (RCTFabricSurface *)surfaceForRootTag:(ReactTag)rootTag
{
return [_surfaceRegistry surfaceForRootTag:rootTag];
}
- (CGSize)sizeThatFitsMinimumSize:(CGSize)minimumSize
maximumSize:(CGSize)maximumSize
surface:(RCTFabricSurface *)surface
{
LayoutContext layoutContext;
layoutContext.pointScaleFactor = RCTScreenScale();
LayoutConstraints layoutConstraints = {};
layoutConstraints.minimumSize = RCTSizeFromCGSize(minimumSize);
layoutConstraints.maximumSize = RCTSizeFromCGSize(maximumSize);
return [_scheduler measureWithLayoutConstraints:layoutConstraints
layoutContext:layoutContext
rootTag:surface.rootTag];
}
- (void)setMinimumSize:(CGSize)minimumSize
maximumSize:(CGSize)maximumSize
surface:(RCTFabricSurface *)surface
{
LayoutContext layoutContext;
layoutContext.pointScaleFactor = RCTScreenScale();
LayoutConstraints layoutConstraints = {};
layoutConstraints.minimumSize = RCTSizeFromCGSize(minimumSize);
layoutConstraints.maximumSize = RCTSizeFromCGSize(maximumSize);
[_scheduler constraintLayoutWithLayoutConstraints:layoutConstraints
layoutContext:layoutContext
rootTag:surface.rootTag];
}
- (void)runSurface:(RCTFabricSurface *)surface
{
NSDictionary *applicationParameters = @{
@"rootTag": @(surface.rootTag),
@"initialProps": surface.properties,
};
[_batchedBridge enqueueJSCall:@"AppRegistry" method:@"runApplication" args:@[surface.moduleName, applicationParameters] completion:NULL];
}
- (void)stopSurface:(RCTFabricSurface *)surface
{
[_batchedBridge enqueueJSCall:@"AppRegistry" method:@"unmountApplicationComponentAtRootTag" args:@[@(surface.rootTag)] completion:NULL];
}
#pragma mark - RCTMountingManagerDelegate
- (void)mountingManager:(RCTMountingManager *)mountingManager willMountComponentsWithRootTag:(ReactTag)rootTag
{
RCTIsMainQueue();
// TODO: Propagate state change to Surface.
}
- (void)mountingManager:(RCTMountingManager *)mountingManager didMountComponentsWithRootTag:(ReactTag)rootTag
{
RCTIsMainQueue();
RCTFabricSurface *surface = [_surfaceRegistry surfaceForRootTag:rootTag];
// FIXME: Implement proper state propagation mechanism.
[surface _setStage:RCTSurfaceStageSurfaceDidInitialRendering];
[surface _setStage:RCTSurfaceStageSurfaceDidInitialLayout];
[surface _setStage:RCTSurfaceStageSurfaceDidInitialMounting];
UIView *rootComponentView = [_mountingManager.componentViewRegistry componentViewByTag:rootTag];
surface.view.rootView = (RCTSurfaceRootView *)rootComponentView;
}
#pragma mark - Bridge events
- (void)handleBridgeWillReloadNotification:(NSNotification *)notification
{
// TODO: Define a lifecycle contract for the pieces involved here including the scheduler, mounting manager, and
// the surface registry. For now simply recreate the scheduler on reload.
// The goal is to deallocate the Scheduler and its underlying references before the JS runtime is destroyed.
_scheduler = [[RCTScheduler alloc] init];
_scheduler.delegate = self;
}
- (void)handleJavaScriptDidLoadNotification:(NSNotification *)notification
{
RCTBridge *bridge = notification.userInfo[@"bridge"];
if (bridge != _batchedBridge) {
_batchedBridge = bridge;
}
}
@end
@implementation RCTSurfacePresenter (Deprecated)
- (std::shared_ptr<FabricUIManager>)uiManager_DO_NOT_USE
{
return _scheduler.uiManager_DO_NOT_USE;
}
@end
@implementation RCTBridge (RCTSurfacePresenter)
- (RCTSurfacePresenter *)surfacePresenter
{
return [self jsBoundExtraModuleForClass:[RCTSurfacePresenter class]];
}
@end