From 9be76e3674b2c30853065d8d6bc075b64b4661c9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stanis=C5=82aw=20Chmiela?= <sjchmiela@gmail.com>
Date: Thu, 31 Mar 2016 20:34:08 +0200
Subject: [PATCH] Add view controller finding functions

We need them to be able to present another view controller
---
 RCTVideo.m | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/RCTVideo.m b/RCTVideo.m
index 3c0fa291..7bd52933 100644
--- a/RCTVideo.m
+++ b/RCTVideo.m
@@ -524,6 +524,26 @@ static NSString *const playbackBufferEmptyKeyPath = @"playbackBufferEmpty";
   }
 }
 
+#pragma mark - View Controller retrieval
+
+// http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview/2596519
+
+- (UIViewController *) firstAvailableUIViewController {
+    // convenience function for casting and to "mask" the recursive function
+    return (UIViewController *)[self traverseResponderChainForUIViewController];
+}
+
+- (id) traverseResponderChainForUIViewController {
+    id nextResponder = [self nextResponder];
+    if ([nextResponder isKindOfClass:[UIViewController class]]) {
+        return nextResponder;
+    } else if ([nextResponder isKindOfClass:[UIView class]]) {
+        return [nextResponder traverseResponderChainForUIViewController];
+    } else {
+        return nil;
+    }
+}
+
 #pragma mark - Lifecycle
 
 - (void)removeFromSuperview