fixed typo and added backwards compatibility for 'visibilityDidChange'

AsyncDisplayKit/ASCellNode.mm

@@ -214,9 +214,9 @@
   // To be overriden by subclasses
 }
 
-- (void)visibileStateDidChange:(BOOL)isVisible
+- (void)visibleStateDidChange:(BOOL)isVisible
 {
-  [super visibileStateDidChange:isVisible];
+  [super visibleStateDidChange:isVisible];
   
   CGRect cellFrame = CGRectZero;
   if (_scrollView) {

AsyncDisplayKit/ASCollectionNode.mm

@@ -173,9 +173,9 @@
 }
 
 #if ASRangeControllerLoggingEnabled
-- (void)visibileStateDidChange:(BOOL)isVisible
+- (void)visibleStateDidChange:(BOOL)isVisible
 {
-  [super visibileStateDidChange:isVisible];
+  [super visibleStateDidChange:isVisible];
   NSLog(@"%@ - visible: %d", self, isVisible);
 }
 #endif

AsyncDisplayKit/ASDisplayNode+Subclasses.h

@@ -240,10 +240,17 @@ NS_ASSUME_NONNULL_BEGIN
  *
  * @discussion Subclasses may use this to monitor when they become visible.
  */
-- (void)visibileStateDidChange:(BOOL)isVisible ASDISPLAYNODE_REQUIRES_SUPER;
+- (void)visibilityDidChange:(BOOL)isVisible ASDISPLAYNODE_REQUIRES_SUPER;
 
 /**
- * @abstract Called whenever the the node has entered or left the display state.
+ * @abstract Called whenever the visiblity of the node changed.
+ *
+ * @discussion Subclasses may use this to monitor when they become visible.
+ */
+- (void)visibleStateDidChange:(BOOL)isVisible ASDISPLAYNODE_REQUIRES_SUPER;
+
+/**
+ * @abstract Called whenever the the node has entered or exited the display state.
  *
  * @discussion Subclasses may use this to monitor when a node should be rendering its content.
  *

AsyncDisplayKit/ASDisplayNode.mm

@@ -2173,9 +2173,14 @@ void recursivelyTriggerDisplayForLayer(CALayer *layer, BOOL shouldBlock)
   });
 }
 
-- (void)visibileStateDidChange:(BOOL)isVisible
+- (void)visibilityDidChange:(BOOL)isVisible
 {
-    // subclass override
+  // subclass override
+}
+
+- (void)visibleStateDidChange:(BOOL)isVisible
+{
+  // subclass override
 }
 
 - (void)displayStateDidChange:(BOOL)inDisplayState
@@ -2282,11 +2287,7 @@ void recursivelyTriggerDisplayForLayer(CALayer *layer, BOOL shouldBlock)
       }
     }
     
-    if (nowDisplay) {
-      [self displayStateDidChange:YES];
-    } else {
-      [self displayStateDidChange:NO];
-    }
+    [self displayStateDidChange:nowDisplay];
   }
 
   // Became visible or invisible.  When range-managed, this represents literal visibility - at least one pixel
@@ -2295,7 +2296,8 @@ void recursivelyTriggerDisplayForLayer(CALayer *layer, BOOL shouldBlock)
   BOOL wasVisible = ASInterfaceStateIncludesVisible(oldState);
 
   if (nowVisible != wasVisible) {
-    [self visibileStateDidChange:nowVisible];
+    [self visibleStateDidChange:nowVisible];
+    [self visibilityDidChange:nowVisible];   //TODO: remove once this method has been deprecated
   }
 
   [self interfaceStateDidChange:newState fromState:oldState];

AsyncDisplayKit/ASImageNode+AnimatedImage.mm

@@ -135,9 +135,9 @@
   [self.animatedImage clearAnimatedImageCache];
 }
 
-- (void)visibileStateDidChange:(BOOL)isVisible
+- (void)visibleStateDidChange:(BOOL)isVisible
 {
-  [super visibileStateDidChange:isVisible];
+  [super visibleStateDidChange:isVisible];
   
   ASDisplayNodeAssertMainThread();
   if (isVisible) {

AsyncDisplayKit/ASMultiplexImageNode.mm

@@ -295,11 +295,11 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
   }
 }
 
-/* visibilityDidChange in ASNetworkImageNode has a very similar implementation. Changes here are likely necessary
+/* visibileStateDidChange in ASNetworkImageNode has a very similar implementation. Changes here are likely necessary
  in ASNetworkImageNode as well. */
-- (void)visibileStateDidChange:(BOOL)isVisible
+- (void)visibleStateDidChange:(BOOL)isVisible
 {
-  [super visibileStateDidChange:isVisible];
+  [super visibleStateDidChange:isVisible];
   
   if (_downloaderImplementsSetPriority) {
     ASDN::MutexLocker l(_downloadIdentifierLock);

AsyncDisplayKit/ASNetworkImageNode.mm

@@ -278,11 +278,11 @@ static const CGSize kMinReleaseImageOnBackgroundSize = {20.0, 20.0};
   }
 }
 
-/* visibilityDidChange in ASMultiplexImageNode has a very similar implementation. Changes here are likely necessary
+/* visibileStateDidChange in ASMultiplexImageNode has a very similar implementation. Changes here are likely necessary
  in ASMultiplexImageNode as well. */
-- (void)visibileStateDidChange:(BOOL)isVisible
+- (void)visibleStateDidChange:(BOOL)isVisible
 {
-  [super visibileStateDidChange:isVisible];
+  [super visibleStateDidChange:isVisible];
 
   if (_downloaderImplementsSetPriority) {
     _lock.lock();

AsyncDisplayKit/ASTableNode.mm

@@ -145,9 +145,9 @@
 }
 
 #if ASRangeControllerLoggingEnabled
-- (void)visibileStateDidChange:(BOOL)isVisible
+- (void)visibleStateDidChange:(BOOL)isVisible
 {
-  [super visibileStateDidChange:isVisible];
+  [super visibleStateDidChange:isVisible];
   NSLog(@"%@ - visible: %d", self, isVisible);
 }
 #endif

AsyncDisplayKit/ASVideoNode.mm

@@ -382,9 +382,9 @@ static NSString * const kStatus = @"status";
   }
 }
 
-- (void)visibileStateDidChange:(BOOL)isVisible
+- (void)visibleStateDidChange:(BOOL)isVisible
 {
-  [super visibileStateDidChange:isVisible];
+  [super visibleStateDidChange:isVisible];
   
   ASDN::MutexLocker l(_videoLock);
   

AsyncDisplayKit/ASVideoPlayerNode.mm

@@ -163,9 +163,9 @@ static void *ASVideoPlayerNodeContext = &ASVideoPlayerNodeContext;
   }
 }
 
-- (void)visibilityDidChange:(BOOL)isVisible
+- (void)visibleStateDidChange:(BOOL)isVisible
 {
-  [super visibilityDidChange:isVisible];
+  [super visibleStateDidChange:isVisible];
 
   ASDN::MutexLocker l(_videoPlayerLock);
 

AsyncDisplayKit/Details/ASRangeController.mm

@@ -95,7 +95,7 @@ static UIApplicationState __ApplicationState = UIApplicationStateActive;
 {
   _scrollDirection = scrollDirection;
 
-  // Perform update immediately, so that cells receive a visibileStateDidChange: call before their first pixel is visible.
+  // Perform update immediately, so that cells receive a visibleStateDidChange: call before their first pixel is visible.
   [self scheduleRangeUpdate];
 }
 

AsyncDisplayKitTests/ASVideoNodeTests.m

@@ -223,12 +223,11 @@
   }];
   _videoNode.playerNode.layer.frame = CGRectZero;
   
-  [_videoNode visibileStateDidChange:YES];
+  [_videoNode visibleStateDidChange:YES];
 
   XCTAssertTrue(_videoNode.shouldBePlaying);
 }
 
-
 - (void)testVideoShouldPauseWhenItLeavesVisibleButShouldKnowPlayingShouldRestartLater
 {
   _videoNode.asset = _firstAsset;