mirror of
https://github.com/TextureGroup/Texture.git
synced 2026-04-07 19:17:39 +00:00
41 lines
1.1 KiB
Plaintext
41 lines
1.1 KiB
Plaintext
//
|
|
// ASDisplayNode+Convenience.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
|
|
//
|
|
|
|
#import "ASDisplayNode+Convenience.h"
|
|
|
|
#import <UIKit/UIViewController.h>
|
|
|
|
#import <AsyncDisplayKit/ASDisplayNodeExtras.h>
|
|
#import <AsyncDisplayKit/ASInternalHelpers.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]) {
|
|
if (UIViewController *vc = AS::DynamicCast<UIViewController>(responder)) {
|
|
return vc;
|
|
}
|
|
}
|
|
return nil;
|
|
}
|
|
|
|
@end
|