react-native/React/Base/Surface/RCTSurfaceView.mm

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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RCTSurfaceView.h"
#import "RCTSurfaceView+Internal.h"
#import "RCTDefines.h"
#import "RCTSurface.h"
#import "RCTSurfaceRootView.h"
@implementation RCTSurfaceView {
RCTSurfaceRootView *_Nullable _rootView;
RCTSurfaceStage _stage;
}
RCT_NOT_IMPLEMENTED(- (instancetype)init)
RCT_NOT_IMPLEMENTED(- (instancetype)initWithFrame:(CGRect)frame)
RCT_NOT_IMPLEMENTED(- (nullable instancetype)initWithCoder:(NSCoder *)coder)
- (instancetype)initWithSurface:(RCTSurface *)surface
{
if (self = [super initWithFrame:CGRectZero]) {
_stage = surface.stage;
_surface = surface;
}
return self;
}
#pragma mark - Internal Interface
- (void)setRootView:(RCTSurfaceRootView *)rootView
{
if (_rootView == rootView) {
return;
}
[_rootView removeFromSuperview];
_rootView = rootView;
[self _updateStage];
}
- (RCTSurfaceRootView *)rootView
{
return _rootView;
}
#pragma mark - stage
- (void)setStage:(RCTSurfaceStage)stage
{
if (stage == _stage) {
return;
}
_stage = stage;
[self _updateStage];
}
- (RCTSurfaceStage)stage
{
return _stage;
}
#pragma mark - Private
- (void)_updateStage
{
if (RCTSurfaceStageIsRunning(_stage)) {
if (_rootView.superview != self) {
[self addSubview:_rootView];
}
}
else {
[_rootView removeFromSuperview];
}
}
@end