142 lines
3.7 KiB
Plaintext
142 lines
3.7 KiB
Plaintext
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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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RCTSurface *_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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RCTSurface *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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[self.component updateState:^(RCTSurfaceHostingComponentState *state) {
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return [RCTSurfaceHostingComponentState newWithStage:state.stage
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intrinsicSize:intrinsicSize];
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} mode:[self suitableStateUpdateMode]];
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}
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- (void)setStage:(RCTSurfaceStage)stage
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{
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[self.component updateState:^(RCTSurfaceHostingComponentState *state) {
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return [RCTSurfaceHostingComponentState newWithStage:stage
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intrinsicSize:state.intrinsicSize];
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} mode:[self suitableStateUpdateMode]];
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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() ? CKUpdateModeSynchronous : 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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