162 lines
4.1 KiB
Plaintext
162 lines
4.1 KiB
Plaintext
/*
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* Copyright (c) Meta Platforms, Inc. and 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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#import "RCTSurfaceHostingComponentController.h"
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#import <ComponentKit/CKComponentSubclass.h>
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#import <React/RCTAssert.h>
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#import <React/RCTSurface.h>
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#import <React/RCTSurfaceDelegate.h>
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#import <React/RCTSurfaceView.h>
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#import "RCTSurfaceHostingComponent+Internal.h"
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#import "RCTSurfaceHostingComponent.h"
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#import "RCTSurfaceHostingComponentState.h"
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@interface RCTSurfaceHostingComponentController () <RCTSurfaceDelegate>
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@end
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@implementation RCTSurfaceHostingComponentController {
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id<RCTSurfaceProtocol> _surface;
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}
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- (instancetype)initWithComponent:(RCTSurfaceHostingComponent *)component
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{
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if (self = [super initWithComponent:component]) {
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[self updateSurfaceWithComponent:component];
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}
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return self;
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}
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#pragma mark - Lifecycle
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- (void)didMount
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{
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[super didMount];
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[self mountSurfaceView];
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}
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- (void)didRemount
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{
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[super didRemount];
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[self mountSurfaceView];
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}
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- (void)didUpdateComponent
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{
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[super didUpdateComponent];
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[self updateSurfaceWithComponent:(RCTSurfaceHostingComponent *)self.component];
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}
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- (void)didUnmount
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{
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[super didUnmount];
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[self unmountSurfaceView];
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}
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#pragma mark - Helpers
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- (void)updateSurfaceWithComponent:(RCTSurfaceHostingComponent *)component
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{
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// Updating `surface`
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id<RCTSurfaceProtocol> const surface = component.surface;
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if (surface != _surface) {
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if (_surface.delegate == self) {
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_surface.delegate = nil;
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}
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_surface = surface;
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_surface.delegate = self;
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}
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}
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- (void)setIntrinsicSize:(CGSize)intrinsicSize
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{
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__weak __typeof(self) weakSelf = self;
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dispatch_async(dispatch_get_main_queue(), ^{
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__strong __typeof(self) strongSelf = weakSelf;
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if (!strongSelf) {
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return;
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}
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[strongSelf.component
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updateState:^(RCTSurfaceHostingComponentState *state) {
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return [RCTSurfaceHostingComponentState newWithStage:state.stage intrinsicSize:intrinsicSize];
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}
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mode:[strongSelf suitableStateUpdateMode]];
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});
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}
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- (void)setStage:(RCTSurfaceStage)stage
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{
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__weak __typeof(self) weakSelf = self;
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dispatch_async(dispatch_get_main_queue(), ^{
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__strong __typeof(self) strongSelf = weakSelf;
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if (!strongSelf) {
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return;
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}
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[strongSelf.component
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updateState:^(RCTSurfaceHostingComponentState *state) {
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return [RCTSurfaceHostingComponentState newWithStage:stage intrinsicSize:state.intrinsicSize];
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}
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mode:[strongSelf suitableStateUpdateMode]];
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});
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}
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- (CKUpdateMode)suitableStateUpdateMode
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{
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return ((RCTSurfaceHostingComponent *)self.component).options.synchronousStateUpdates && RCTIsMainQueue()
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? CKUpdateModeSynchronous
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: CKUpdateModeAsynchronous;
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}
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- (void)mountSurfaceView
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{
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UIView *const surfaceView = _surface.view;
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const CKComponentViewContext &context = [[self component] viewContext];
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UIView *const superview = context.view;
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superview.clipsToBounds = YES;
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RCTAssert([superview.subviews count] <= 1, @"Should never have more than a single stateful subview.");
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UIView *const existingSurfaceView = [superview.subviews lastObject];
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if (existingSurfaceView != surfaceView) {
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[existingSurfaceView removeFromSuperview];
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surfaceView.frame = superview.bounds;
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surfaceView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
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[superview addSubview:surfaceView];
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}
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}
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- (void)unmountSurfaceView
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{
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const CKComponentViewContext &context = [[self component] viewContext];
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UIView *const superview = context.view;
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RCTAssert([superview.subviews count] <= 1, @"Should never have more than a single stateful subview.");
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UIView *const existingSurfaceView = [superview.subviews lastObject];
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[existingSurfaceView removeFromSuperview];
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}
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#pragma mark - RCTSurfaceDelegate
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- (void)surface:(RCTSurface *)surface didChangeIntrinsicSize:(CGSize)intrinsicSize
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{
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[self setIntrinsicSize:intrinsicSize];
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}
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- (void)surface:(RCTSurface *)surface didChangeStage:(RCTSurfaceStage)stage
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{
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[self setStage:stage];
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}
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@end
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