[tvOS] Added a default touch down animation for ASControlNode

AsyncDisplayKit/ASControlNode.h

@@ -30,6 +30,9 @@ typedef NS_OPTIONS(NSUInteger, ASControlNodeEvent)
   ASControlNodeEventTouchUpOutside    = 1 << 5,
   /** A system event canceling the current touches for the control node. */
   ASControlNodeEventTouchCancel       = 1 << 6,
+  /** A system event when the Play/Pause button on the Apple TV remote is pressed. */
+  ASControlNodeEventPrimaryActionTriggered = 1 << 13,
+    
   /** All events, including system events. */
   ASControlNodeEventAllEvents         = 0xFFFFFFFF
 };

AsyncDisplayKit/ASControlNode.mm

@@ -82,12 +82,21 @@ void _ASEnumerateControlEventsIncludedInMaskWithBlock(ASControlNodeEvent mask, v
   
   // As we have no targets yet, we start off with user interaction off. When a target is added, it'll get turned back on.
   self.userInteractionEnabled = NO;
-#if TARGET_OS_TV
-    [self addTarget:self action:@selector(updateUI) forControlEvents:ASControlNodeEventAllEvents];
-#endif
+  
   return self;
 }
 
+- (void)didLoad
+{
+#if TARGET_OS_TV
+  // [self addTarget:self action:@selector(updateUI) forControlEvents:ASControlNodeEventPrimaryActionTriggered];
+  self.userInteractionEnabled = YES;
+  UITapGestureRecognizer *tapGestureRec = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(pressDown)];
+  tapGestureRec.allowedPressTypes = @[@(UIPressTypeSelect)];
+  [self.view addGestureRecognizer:tapGestureRec];
+#endif
+}
+
 #pragma mark - ASDisplayNode Overrides
 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
 {
@@ -153,6 +162,7 @@ void _ASEnumerateControlEventsIncludedInMaskWithBlock(ASControlNodeEvent mask, v
 
 - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
 {
+  NSLog(@"Touches Cancelled");
   // If we're not interested in touches, we have nothing to do.
   if (!self.enabled)
     return;
@@ -429,9 +439,17 @@ void _ASEnumerateControlEventsIncludedInMaskWithBlock(ASControlNodeEvent mask, v
 }
 #if TARGET_OS_TV
 #pragma mark - tvOS
-- (void)updateUI
+- (void)pressDown
 {
-    NSLog(@"Update UI");
+  [UIView animateWithDuration:0.1 delay:0 options:UIViewAnimationCurveLinear animations:^{
+    [self setPressedState];
+  } completion:^(BOOL finished) {
+    if (finished) {
+      [UIView animateWithDuration:0.1 delay:0 options:UIViewAnimationCurveLinear animations:^{
+        [self setFocusedState];
+      } completion:nil];
+    }
+  }];
 }
 
 - (BOOL)canBecomeFocused
@@ -446,33 +464,47 @@ void _ASEnumerateControlEventsIncludedInMaskWithBlock(ASControlNodeEvent mask, v
 
 - (void)didUpdateFocusInContext:(UIFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
 {
-  NSLog(@"Focused");
   if (context.nextFocusedView && context.nextFocusedView == self.view) {
     //Focused
     [coordinator addCoordinatedAnimations:^{
+      [self setFocusedState];
+    } completion:nil];
+  } else{
+    //Not focused
+    [coordinator addCoordinatedAnimations:^{
+      [self setDefaultState];
+    } completion:nil];
+  }
+}
+
+- (void)setFocusedState
+{
   self.layer.shadowOffset = CGSizeMake(2, 10);
   self.layer.shadowColor = [UIColor blackColor].CGColor;
   self.layer.shadowRadius = 12.0;
   self.layer.shadowOpacity = 0.45;
   self.layer.shadowPath = [UIBezierPath bezierPathWithRect:self.layer.bounds].CGPath;
   self.view.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.1, 1.1);
-        } completion:^{
+}
 
-        }];
-    } else{
-        //Not focused
-        [coordinator addCoordinatedAnimations:^{
+- (void)setPressedState
+{
+  self.layer.shadowOffset = CGSizeMake(2, 2);
+  self.layer.shadowColor = [UIColor blackColor].CGColor;
+  self.layer.shadowRadius = 12.0;
+  self.layer.shadowOpacity = 0.45;
+  self.layer.shadowPath = [UIBezierPath bezierPathWithRect:self.layer.bounds].CGPath;
+  self.view.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1, 1);
+}
+
+- (void)setDefaultState
+{
   self.layer.shadowOffset = CGSizeZero;
   self.layer.shadowColor = [UIColor blackColor].CGColor;
   self.layer.shadowRadius = 0;
   self.layer.shadowOpacity = 0;
   self.layer.shadowPath = [UIBezierPath bezierPathWithRect:self.layer.bounds].CGPath;
   self.view.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1, 1);
-        } completion:^{
-            
-        }];
-
-    }
 }
 #endif
 @end