Swiftgram/Source/ASNavigationController.m
appleguy 465abb1ded [License] Simplify the Texture license to be pure Apache 2 (removing ASDK-Licenses). (#1077)
* [License] Simplify the Texture license to be pure Apache 2 (removing ASDK-Licenses)

With permission of the Facebook Open Source team, we are simplifying the Texture
license so that clients can rely on the Apache 2 terms that most of Texture is
already covered by. This means that code originally forked from AsyncDisplayKit
will be re-licensed from "BSD 3-clause + PATENTS v2" to Apache 2 without a
PATENTS file.

After getting confirmation that the updates to these core files look good, we'll
propagate this new license header to all files (in this same PR) and get sign-off
from all parties before landing.

* [License] Update all Texture source files to be pure Apache 2.

* Changelog entry for Apache 2 license update.

* Revert "[License] Update all Texture source files to be pure Apache 2."

This reverts commit ffa0fbbba9717d871dd16c4b07539f2f8208fc2b.

* [License] Update all Texture source files to be pure Apache 2, maintaining copyrights.

* [License] Update CONTRIBUTING, README, Podspec & Dangerfile.
2018-08-28 07:39:18 -07:00

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4.0 KiB
Objective-C

//
// ASNavigationController.m
// 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
//
#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