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81 lines
2.2 KiB
Objective-C
81 lines
2.2 KiB
Objective-C
//
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// ASTabBarController.m
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// AsyncDisplayKit
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//
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// Created by Garrett Moon on 5/10/16.
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#import <AsyncDisplayKit/ASTabBarController.h>
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@implementation ASTabBarController
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{
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BOOL _parentManagesVisibilityDepth;
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NSInteger _visibilityDepth;
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}
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ASVisibilityDidMoveToParentViewController;
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ASVisibilityViewWillAppear;
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ASVisibilityViewDidDisappearImplementation;
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ASVisibilitySetVisibilityDepth;
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ASVisibilityDepthImplementation;
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- (void)visibilityDepthDidChange
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{
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for (UIViewController *viewController in self.viewControllers) {
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if ([viewController conformsToProtocol:@protocol(ASVisibilityDepth)]) {
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[(id <ASVisibilityDepth>)viewController visibilityDepthDidChange];
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}
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}
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}
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- (NSInteger)visibilityDepthOfChildViewController:(UIViewController *)childViewController
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{
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NSUInteger viewControllerIndex = [self.viewControllers indexOfObjectIdenticalTo:childViewController];
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if (viewControllerIndex == NSNotFound) {
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//If childViewController is not actually a child, return NSNotFound which is also a really large number.
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return NSNotFound;
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}
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if (self.selectedViewController == childViewController) {
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return [self visibilityDepth];
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}
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return [self visibilityDepth] + 1;
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}
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#pragma mark - UIKit overrides
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- (void)setViewControllers:(NSArray<__kindof UIViewController *> *)viewControllers
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{
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[super setViewControllers:viewControllers];
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[self visibilityDepthDidChange];
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}
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- (void)setViewControllers:(NSArray<__kindof UIViewController *> *)viewControllers animated:(BOOL)animated
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{
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[super setViewControllers:viewControllers animated:animated];
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[self visibilityDepthDidChange];
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}
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- (void)setSelectedIndex:(NSUInteger)selectedIndex
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{
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[super setSelectedIndex:selectedIndex];
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[self visibilityDepthDidChange];
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}
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- (void)setSelectedViewController:(__kindof UIViewController *)selectedViewController
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{
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[super setSelectedViewController:selectedViewController];
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[self visibilityDepthDidChange];
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}
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@end
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