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Fluxup_PAP/node_modules/react-native-screens/ios/bottom-tabs/host/RNSTabBarControllerDelegate.mm
2026-03-10 16:18:05 +00:00

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#import "RNSTabBarControllerDelegate.h"
#import <React/RCTAssert.h>
#import "RNSTabBarController.h"
#import "RNSTabsScreenViewController.h"
@implementation RNSTabBarControllerDelegate
- (BOOL)tabBarController:(UITabBarController *)tabBarController
shouldSelectViewController:(UIViewController *)viewController
{
RCTAssert(
[tabBarController isKindOfClass:RNSTabBarController.class],
@"[RNScreens] Unexpected type of controller: %@",
tabBarController.class);
// Can be UINavigationController in case of MoreNavigationController
RCTAssert(
[viewController isKindOfClass:RNSTabsScreenViewController.class] ||
[viewController isKindOfClass:UINavigationController.class],
@"[RNScreens] Unexpected type of controller: %@",
viewController.class);
RNSTabBarController *tabBarCtrl = static_cast<RNSTabBarController *>(tabBarController);
RNSTabsScreenViewController *tabScreenCtrl = static_cast<RNSTabsScreenViewController *>(viewController);
#if !TARGET_OS_TV
// When the moreNavigationController is selected, we want to show it
// TODO: this solution only works for uncontrolled mode. Add support for controlled mode as well.
if ([self shouldAllowMoreControllerSelection:tabBarCtrl] &&
viewController == tabBarController.moreNavigationController) {
return YES;
}
#endif // !TARGET_OS_TV
// TODO: handle enforcing orientation with natively-driven tabs
// Detect repeated selection and inform tabScreenController
BOOL repeatedSelection = [tabBarCtrl selectedViewController] == tabScreenCtrl;
BOOL repeatedSelectionHandledBySpecialEffect =
repeatedSelection ? [tabScreenCtrl tabScreenSelectedRepeatedly] : false;
[tabBarCtrl.tabsHostComponentView
emitOnNativeFocusChangeRequestSelectedTabScreen:tabScreenCtrl.tabScreenComponentView
repeatedSelectionHandledBySpecialEffect:repeatedSelectionHandledBySpecialEffect];
// On repeated selection we return false to prevent native *pop to root* effect that works only starting from iOS 26
// and interferes with our implementation (which is necessary for controlled tabs).
return repeatedSelection ? false : ![self shouldPreventNativeTabChangeWithinTabBarController:tabBarCtrl];
}
- (void)tabBarController:(UITabBarController *)tabBarController
didSelectViewController:(UIViewController *)viewController
{
RCTAssert(
[tabBarController isKindOfClass:RNSTabBarController.class],
@"[RNScreens] Unexpected type of controller: %@",
tabBarController.class);
// Can be UINavigationController in case of MoreNavigationController
RCTAssert(
[viewController isKindOfClass:RNSTabsScreenViewController.class] ||
[viewController isKindOfClass:UINavigationController.class],
@"[RNScreens] Unexpected type of controller: %@",
viewController.class);
#if !TARGET_OS_TV
// When the moreNavigationController is selected, we want to show it
if ([self shouldAllowMoreControllerSelection:static_cast<RNSTabBarController *>(tabBarController)] &&
viewController == tabBarController.moreNavigationController) {
// Hide the navigation bar for the more controller
[tabBarController.moreNavigationController setNavigationBarHidden:YES animated:NO];
}
#endif // !TARGET_OS_TV
}
- (BOOL)shouldPreventNativeTabChangeWithinTabBarController:(nonnull RNSTabBarController *)tabBarCtrl
{
// This handles the tabsHostComponentView nullability
return [tabBarCtrl.tabsHostComponentView experimental_controlNavigationStateInJS] ?: NO;
}
- (BOOL)shouldAllowMoreControllerSelection:(nonnull RNSTabBarController *)tabBarCtrl
{
return ![tabBarCtrl.tabsHostComponentView experimental_controlNavigationStateInJS] ?: YES;
}
@end