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RCTModalHostView.m
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/
RCTModalHostView.m
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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTModalHostView.h"
#import "RCTAssert.h"
#import "RCTBridge.h"
#import "RCTModalHostViewController.h"
#import "RCTTouchHandler.h"
#import "RCTUIManager.h"
#import "UIView+React.h"
@implementation RCTModalHostView
{
__weak RCTBridge *_bridge;
BOOL _isPresented;
RCTModalHostViewController *_modalViewController;
RCTTouchHandler *_touchHandler;
UIView *_reactSubview;
}
RCT_NOT_IMPLEMENTED(- (instancetype)initWithFrame:(CGRect)frame)
RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:coder)
- (instancetype)initWithBridge:(RCTBridge *)bridge
{
if ((self = [super initWithFrame:CGRectZero])) {
_bridge = bridge;
_modalViewController = [RCTModalHostViewController new];
UIView *containerView = [UIView new];
containerView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
_modalViewController.view = containerView;
_touchHandler = [[RCTTouchHandler alloc] initWithBridge:bridge];
_isPresented = NO;
__weak typeof(self) weakSelf = self;
_modalViewController.boundsDidChangeBlock = ^(CGRect newBounds) {
[weakSelf notifyForBoundsChange:newBounds];
};
}
return self;
}
- (void)notifyForBoundsChange:(CGRect)newBounds
{
if (_reactSubview && _isPresented) {
[_bridge.uiManager setFrame:newBounds forView:_reactSubview];
}
}
- (void)insertReactSubview:(UIView *)subview atIndex:(NSInteger)atIndex
{
RCTAssert(_reactSubview == nil, @"Modal view can only have one subview");
[super insertReactSubview:subview atIndex:atIndex];
[subview addGestureRecognizer:_touchHandler];
subview.autoresizingMask = UIViewAutoresizingFlexibleHeight |
UIViewAutoresizingFlexibleWidth;
[_modalViewController.view insertSubview:subview atIndex:0];
_reactSubview = subview;
}
- (void)removeReactSubview:(UIView *)subview
{
RCTAssert(subview == _reactSubview, @"Cannot remove view other than modal view");
[super removeReactSubview:subview];
[subview removeGestureRecognizer:_touchHandler];
_reactSubview = nil;
}
- (void)didUpdateReactSubviews
{
// Do nothing, as subview (singular) is managed by `insertReactSubview:atIndex:`
}
- (void)dismissModalViewController
{
if (_isPresented) {
[_delegate dismissModalHostView:self withViewController:_modalViewController animated:[self hasAnimationType]];
_isPresented = NO;
}
}
- (void)didMoveToWindow
{
[super didMoveToWindow];
if (!_isPresented && self.window) {
RCTAssert(self.reactViewController, @"Can't present modal view controller without a presenting view controller");
if ([self.animationType isEqualToString:@"fade"]) {
_modalViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
} else if ([self.animationType isEqualToString:@"slide"]) {
_modalViewController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
}
[_delegate presentModalHostView:self withViewController:_modalViewController animated:[self hasAnimationType]];
_isPresented = YES;
}
}
- (void)didMoveToSuperview
{
[super didMoveToSuperview];
if (_isPresented && !self.superview) {
[self dismissModalViewController];
}
}
- (void)invalidate
{
dispatch_async(dispatch_get_main_queue(), ^{
[self dismissModalViewController];
});
}
- (BOOL)isTransparent
{
return _modalViewController.modalPresentationStyle == UIModalPresentationCustom;
}
- (BOOL)hasAnimationType
{
return ![self.animationType isEqualToString:@"none"];
}
- (void)setTransparent:(BOOL)transparent
{
_modalViewController.modalPresentationStyle = transparent ? UIModalPresentationCustom : UIModalPresentationFullScreen;
}
@end