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/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import "FIRAuthDefaultUIDelegate.h"
#import <GoogleUtilities/GULAppEnvironmentUtil.h>
NS_ASSUME_NONNULL_BEGIN
@interface FIRAuthDefaultUIDelegate ()
/** @fn initWithViewController:
@brief Initializes the instance with a view controller.
@param viewController The view controller as the presenting view controller in @c
FIRAuthUIDelegate.
@return The initialized instance.
*/
- (instancetype)initWithViewController:(UIViewController *)viewController NS_DESIGNATED_INITIALIZER;
@end
@implementation FIRAuthDefaultUIDelegate {
/** @var _viewController
@brief The presenting view controller.
*/
UIViewController *_viewController;
}
- (instancetype)initWithViewController:(UIViewController *)viewController {
self = [super init];
if (self) {
_viewController = viewController;
}
return self;
}
- (void)presentViewController:(UIViewController *)viewControllerToPresent
animated:(BOOL)flag
completion:(nullable void (^)(void))completion {
[_viewController presentViewController:viewControllerToPresent
animated:flag
completion:completion];
}
- (void)dismissViewControllerAnimated:(BOOL)flag completion:(nullable void (^)(void))completion {
[_viewController dismissViewControllerAnimated:flag completion:completion];
}
+ (id<FIRAuthUIDelegate>)defaultUIDelegate {
// iOS App extensions should not call [UIApplication sharedApplication], even if UIApplication
// responds to it.
static Class applicationClass = nil;
if (![GULAppEnvironmentUtil isAppExtension]) {
Class cls = NSClassFromString(@"UIApplication");
if (cls && [cls respondsToSelector:NSSelectorFromString(@"sharedApplication")]) {
applicationClass = cls;
}
}
UIApplication *application = [applicationClass sharedApplication];
UIViewController *topViewController = application.keyWindow.rootViewController;
while (true){
if (topViewController.presentedViewController) {
topViewController = topViewController.presentedViewController;
} else if ([topViewController isKindOfClass:[UINavigationController class]]) {
UINavigationController *nav = (UINavigationController *)topViewController;
topViewController = nav.topViewController;
} else if ([topViewController isKindOfClass:[UITabBarController class]]) {
UITabBarController *tab = (UITabBarController *)topViewController;
topViewController = tab.selectedViewController;
} else {
break;
}
}
return [[FIRAuthDefaultUIDelegate alloc] initWithViewController:topViewController];
}
@end
NS_ASSUME_NONNULL_END
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