Add 'submodules/AsyncDisplayKit/' from commit '02bedc12816e251ad71777f9d2578329b6d2bef6'

git-subtree-dir: submodules/AsyncDisplayKit
git-subtree-mainline: d06f423e0e
git-subtree-split: 02bedc1281

submodules/AsyncDisplayKit/Source/ASNavigationController.mm

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+//
+//  ASNavigationController.mm
+//  Texture
+//
+//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
+//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
+//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
+//
+#ifndef MINIMAL_ASDK
+#import <AsyncDisplayKit/ASNavigationController.h>
+#import <AsyncDisplayKit/ASLog.h>
+#import <AsyncDisplayKit/ASObjectDescriptionHelpers.h>
+
+@implementation ASNavigationController
+{
+  BOOL _parentManagesVisibilityDepth;
+  NSInteger _visibilityDepth;
+}
+
+ASVisibilityDidMoveToParentViewController;
+
+ASVisibilityViewWillAppear;
+
+ASVisibilityViewDidDisappearImplementation;
+
+ASVisibilitySetVisibilityDepth;
+
+ASVisibilityDepthImplementation;
+
+- (void)visibilityDepthDidChange
+{
+  for (UIViewController *viewController in self.viewControllers) {
+    if ([viewController conformsToProtocol:@protocol(ASVisibilityDepth)]) {
+      [(id <ASVisibilityDepth>)viewController visibilityDepthDidChange];
+    }
+  }
+}
+
+- (NSInteger)visibilityDepthOfChildViewController:(UIViewController *)childViewController
+{
+  NSUInteger viewControllerIndex = [self.viewControllers indexOfObjectIdenticalTo:childViewController];
+  if (viewControllerIndex == NSNotFound) {
+    //If childViewController is not actually a child, return NSNotFound which is also a really large number.
+    return NSNotFound;
+  }
+  
+  if (viewControllerIndex == self.viewControllers.count - 1) {
+    //view controller is at the top, just return our own visibility depth.
+    return [self visibilityDepth];
+  } else if (viewControllerIndex == 0) {
+    //view controller is the root view controller. Can be accessed by holding the back button.
+    return [self visibilityDepth] + 1;
+  }
+  
+  return [self visibilityDepth] + self.viewControllers.count - 1 - viewControllerIndex;
+}
+
+#pragma mark - UIKit overrides
+
+- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated
+{
+  as_activity_create_for_scope("Pop multiple from ASNavigationController");
+  NSArray *viewControllers = [super popToViewController:viewController animated:animated];
+  as_log_info(ASNodeLog(), "Popped %@ to %@, removing %@", self, viewController, ASGetDescriptionValueString(viewControllers));
+
+  [self visibilityDepthDidChange];
+  return viewControllers;
+}
+
+- (NSArray *)popToRootViewControllerAnimated:(BOOL)animated
+{
+  as_activity_create_for_scope("Pop to root of ASNavigationController");
+  NSArray *viewControllers = [super popToRootViewControllerAnimated:animated];
+  as_log_info(ASNodeLog(), "Popped view controllers %@ from %@", ASGetDescriptionValueString(viewControllers), self);
+
+  [self visibilityDepthDidChange];
+  return viewControllers;
+}
+
+- (void)setViewControllers:(NSArray *)viewControllers
+{
+  // NOTE: As of now this method calls through to setViewControllers:animated: so no need to log/activity here.
+  
+  [super setViewControllers:viewControllers];
+  [self visibilityDepthDidChange];
+}
+
+- (void)setViewControllers:(NSArray *)viewControllers animated:(BOOL)animated
+{
+  as_activity_create_for_scope("Set view controllers of ASNavigationController");
+  as_log_info(ASNodeLog(), "Set view controllers of %@ to %@ animated: %d", self, ASGetDescriptionValueString(viewControllers), animated);
+  [super setViewControllers:viewControllers animated:animated];
+  [self visibilityDepthDidChange];
+}
+
+- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
+{
+  as_activity_create_for_scope("Push view controller on ASNavigationController");
+  as_log_info(ASNodeLog(), "Pushing %@ onto %@", viewController, self);
+  [super pushViewController:viewController animated:animated];
+  [self visibilityDepthDidChange];
+}
+
+- (UIViewController *)popViewControllerAnimated:(BOOL)animated
+{
+  as_activity_create_for_scope("Pop view controller from ASNavigationController");
+  UIViewController *viewController = [super popViewControllerAnimated:animated];
+  as_log_info(ASNodeLog(), "Popped %@ from %@", viewController, self);
+  [self visibilityDepthDidChange];
+  return viewController;
+}
+
+@end
+
+#endif