Swiftgram/Source/ASDisplayNode+Convenience.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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Objective-C

//
// ASDisplayNode+Convenience.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 "ASDisplayNode+Convenience.h"
#import <UIKit/UIViewController.h>
#import <AsyncDisplayKit/ASDisplayNodeExtras.h>
#import <AsyncDisplayKit/ASResponderChainEnumerator.h>
@implementation ASDisplayNode (Convenience)
- (__kindof UIViewController *)closestViewController
{
ASDisplayNodeAssertMainThread();
// Careful not to trigger node loading here.
if (!self.nodeLoaded) {
return nil;
}
// Get the closest view.
UIView *view = ASFindClosestViewOfLayer(self.layer);
// Travel up the responder chain to find a view controller.
for (UIResponder *responder in [view asdk_responderChainEnumerator]) {
UIViewController *vc = ASDynamicCast(responder, UIViewController);
if (vc != nil) {
return vc;
}
}
return nil;
}
@end