80 lines
2.0 KiB
Mathematica
80 lines
2.0 KiB
Mathematica
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/*
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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 <React/RCTUtils.h>
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#import <React/RCTAlertController.h>
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@interface RCTAlertController ()
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@property (nonatomic, strong) UIWindow *alertWindow;
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@end
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@implementation RCTAlertController
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- (UIWindow *)alertWindow
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{
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if (_alertWindow == nil) {
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_alertWindow = [self getUIWindowFromScene];
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if (_alertWindow == nil) {
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UIWindow *keyWindow = RCTSharedApplication().keyWindow;
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if (keyWindow) {
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_alertWindow = [[UIWindow alloc] initWithFrame:keyWindow.bounds];
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} else {
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// keyWindow is nil, so we cannot create and initialize _alertWindow
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NSLog(@"Unable to create alert window: keyWindow is nil");
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}
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}
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if (_alertWindow) {
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_alertWindow.rootViewController = [UIViewController new];
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_alertWindow.windowLevel = UIWindowLevelAlert + 1;
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}
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}
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return _alertWindow;
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}
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- (void)show:(BOOL)animated completion:(void (^)(void))completion
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{
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if (@available(iOS 13.0, *)) {
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UIUserInterfaceStyle style =
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RCTSharedApplication().delegate.window.overrideUserInterfaceStyle ?: UIUserInterfaceStyleUnspecified;
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self.overrideUserInterfaceStyle = style;
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}
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[self.alertWindow makeKeyAndVisible];
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[self.alertWindow.rootViewController presentViewController:self animated:animated completion:completion];
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}
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- (void)hide
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{
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[_alertWindow setHidden:YES];
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if (@available(iOS 13, *)) {
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_alertWindow.windowScene = nil;
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}
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_alertWindow = nil;
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}
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- (UIWindow *)getUIWindowFromScene
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{
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if (@available(iOS 13.0, *)) {
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for (UIScene *scene in RCTSharedApplication().connectedScenes) {
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if (scene.activationState == UISceneActivationStateForegroundActive &&
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[scene isKindOfClass:[UIWindowScene class]]) {
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return [[UIWindow alloc] initWithWindowScene:(UIWindowScene *)scene];
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}
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}
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}
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return nil;
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}
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@end
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