#import "RNNNavigationController.h" #import "RNNRootViewController.h" #import "InteractivePopGestureDelegate.h" const NSInteger TOP_BAR_TRANSPARENT_TAG = 78264803; @interface RNNNavigationController() @property (nonatomic, strong) NSMutableDictionary* originalTopBarImages; @end @implementation RNNNavigationController - (UIViewController *)getCurrentChild { return self.topViewController; } - (UIInterfaceOrientationMask)supportedInterfaceOrientations { return self.getCurrentChild.supportedInterfaceOrientations; } - (UINavigationController *)navigationController { return self; } - (UIStatusBarStyle)preferredStatusBarStyle { return self.getCurrentChild.preferredStatusBarStyle; } - (UIModalPresentationStyle)modalPresentationStyle { return self.getCurrentChild.modalPresentationStyle; } - (UIViewController *)popViewControllerAnimated:(BOOL)animated { if (self.viewControllers.count > 1) { UIViewController *controller = self.viewControllers[self.viewControllers.count - 2]; if ([controller isKindOfClass:[RNNRootViewController class]]) { RNNRootViewController *rnnController = (RNNRootViewController *)controller; [self.presenter applyOptionsBeforePopping:rnnController.resolveOptions]; } } return [super popViewControllerAnimated:animated]; } - (UIViewController *)childViewControllerForStatusBarStyle { return self.topViewController; } - (void)setTopBarBackgroundColor:(UIColor *)backgroundColor { if (backgroundColor) { CGFloat bgColorAlpha = CGColorGetAlpha(backgroundColor.CGColor); if (bgColorAlpha == 0.0) { if (![self.navigationBar viewWithTag:TOP_BAR_TRANSPARENT_TAG]){ [self storeOriginalTopBarImages:self]; UIView *transparentView = [[UIView alloc] initWithFrame:CGRectZero]; transparentView.backgroundColor = [UIColor clearColor]; transparentView.tag = TOP_BAR_TRANSPARENT_TAG; [self.navigationBar insertSubview:transparentView atIndex:0]; } self.navigationBar.translucent = YES; [self.navigationBar setBackgroundColor:[UIColor clearColor]]; self.navigationBar.shadowImage = [UIImage new]; [self.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault]; } else { self.navigationBar.barTintColor = backgroundColor; UIView *transparentView = [self.navigationBar viewWithTag:TOP_BAR_TRANSPARENT_TAG]; if (transparentView){ [transparentView removeFromSuperview]; [self.navigationBar setBackgroundImage:self.originalTopBarImages[@"backgroundImage"] forBarMetrics:UIBarMetricsDefault]; self.navigationBar.shadowImage = self.originalTopBarImages[@"shadowImage"]; self.originalTopBarImages = nil; } } } else { UIView *transparentView = [self.navigationBar viewWithTag:TOP_BAR_TRANSPARENT_TAG]; if (transparentView){ [transparentView removeFromSuperview]; [self.navigationBar setBackgroundImage:self.originalTopBarImages[@"backgroundImage"] ? self.originalTopBarImages[@"backgroundImage"] : [self.navigationBar backgroundImageForBarMetrics:UIBarMetricsDefault] forBarMetrics:UIBarMetricsDefault]; self.navigationBar.shadowImage = self.originalTopBarImages[@"shadowImage"] ? self.originalTopBarImages[@"shadowImage"] : self.navigationBar.shadowImage; self.originalTopBarImages = nil; } self.navigationBar.barTintColor = nil; } } - (void)storeOriginalTopBarImages:(UINavigationController *)navigationController { NSMutableDictionary *originalTopBarImages = [@{} mutableCopy]; UIImage *bgImage = [navigationController.navigationBar backgroundImageForBarMetrics:UIBarMetricsDefault]; if (bgImage != nil) { originalTopBarImages[@"backgroundImage"] = bgImage; } UIImage *shadowImage = navigationController.navigationBar.shadowImage; if (shadowImage != nil) { originalTopBarImages[@"shadowImage"] = shadowImage; } self.originalTopBarImages = originalTopBarImages; } @end