merged with master

AsyncDisplayKit.podspec

@@ -1,11 +1,11 @@
 Pod::Spec.new do |spec|
   spec.name         = 'AsyncDisplayKit'
-  spec.version      = '1.9.5'
+  spec.version      = '1.9.6'
   spec.license      =  { :type => 'BSD' }
   spec.homepage     = 'http://asyncdisplaykit.org'
   spec.authors      = { 'Scott Goodson' => 'scottgoodson@gmail.com', 'Ryan Nystrom' => 'rnystrom@fb.com' }
   spec.summary      = 'Smooth asynchronous user interfaces for iOS apps.'
-  spec.source       = { :git => 'https://github.com/facebook/AsyncDisplayKit.git', :tag => '1.9.5' }
+  spec.source       = { :git => 'https://github.com/facebook/AsyncDisplayKit.git', :tag => '1.9.6' }
 
   spec.documentation_url = 'http://asyncdisplaykit.org/appledoc/'
 
@@ -47,4 +47,6 @@ Pod::Spec.new do |spec|
   }
 
   spec.ios.deployment_target = '7.0'
+  # tvOS not recognized by older versions of Cocoapods - add this only after tvOS support complete.
+  # spec.tvos.deployment_target = '9.0'
 end

AsyncDisplayKit.xcodeproj/project.pbxproj

@@ -1587,8 +1587,6 @@
 				058D09B9195D04C000B7D73C /* Frameworks */,
 				058D09BA195D04C000B7D73C /* Resources */,
 				3B9D88CDF51B429C8409E4B6 /* Copy Pods Resources */,
-				527A806066E1F4E2795090DF /* Embed Pods Frameworks */,
-				1B86F48711505F91D5FEF571 /* Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
@@ -1718,21 +1716,6 @@
 			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-AsyncDisplayKitTests/Pods-AsyncDisplayKitTests-resources.sh\"\n";
 			showEnvVarsInLog = 0;
 		};
-		527A806066E1F4E2795090DF /* Embed Pods Frameworks */ = {
-			isa = PBXShellScriptBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			inputPaths = (
-			);
-			name = "Embed Pods Frameworks";
-			outputPaths = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-			shellPath = /bin/sh;
-			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-AsyncDisplayKitTests/Pods-AsyncDisplayKitTests-frameworks.sh\"\n";
-			showEnvVarsInLog = 0;
-		};
 /* End PBXShellScriptBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */

AsyncDisplayKit/ASButtonNode.h

@@ -11,8 +11,9 @@
 
 @interface ASButtonNode : ASControlNode
 
-@property (nonatomic, readonly) ASTextNode *titleNode;
+@property (nonatomic, readonly) ASTextNode  * _Nonnull titleNode;
-@property (nonatomic, readonly) ASImageNode *imageNode;
+@property (nonatomic, readonly) ASImageNode * _Nonnull imageNode;
+@property (nonatomic, readonly) ASImageNode * _Nonnull backgroundImageNode;
 
 /**
  Spacing between image and title. Defaults to 8.0.
@@ -36,11 +37,66 @@
  */
 @property (nonatomic, assign) ASVerticalAlignment contentVerticalAlignment;
 
+/**
+ *  Returns the styled title associated with the specified state.
+ *
+ *  @param state The state that uses the styled title. The possible values are described in ASControlState.
+ *
+ *  @return The title for the specified state.
+ */
+- (NSAttributedString * _Nullable)attributedTitleForState:(ASControlState)state;
 
-- (NSAttributedString *)attributedTitleForState:(ASControlState)state;
+/**
-- (void)setAttributedTitle:(NSAttributedString *)title forState:(ASControlState)state;
+ *  Sets the styled title to use for the specified state. This will reset styled title previously set with -setTitle:withFont:withColor:forState.
+ *
+ *  @param title The styled text string to use for the title.
+ *  @param state The state that uses the specified title. The possible values are described in ASControlState.
+ */
+- (void)setAttributedTitle:(nullable NSAttributedString *)title forState:(ASControlState)state;
 
-- (UIImage *)imageForState:(ASControlState)state;
+/**
-- (void)setImage:(UIImage *)image forState:(ASControlState)state;
+ *  Sets the title to use for the specified state. This will reset styled title previously set with -setAttributedTitle:forState.
+ *
+ *  @param title The styled text string to use for the title.
+ *  @param font The font to use for the title.
+ *  @param color The color to use for the title.
+ *  @param state The state that uses the specified title. The possible values are described in ASControlState.
+ */
+- (void)setTitle:(nonnull NSString *)title withFont:(nullable UIFont *)font withColor:(nullable UIColor *)color forState:(ASControlState)state;
+
+/**
+ *  Returns the image used for a button state.
+ *
+ *  @param state The state that uses the image. Possible values are described in ASControlState.
+ *
+ *  @return The image used for the specified state.
+ */
+- (UIImage * _Nullable)imageForState:(ASControlState)state;
+
+/**
+ *  Sets the image to use for the specified state.
+ *
+ *  @param image The image to use for the specified state.
+ *  @param state The state that uses the specified title. The values are described in ASControlState.
+ */
+- (void)setImage:(nullable UIImage *)image forState:(ASControlState)state;
+
+/**
+ *  Sets the background image to use for the specified state.
+ *
+ *  @param image The image to use for the specified state.
+ *  @param state The state that uses the specified title. The values are described in ASControlState.
+ */
+- (void)setBackgroundImage:(nullable UIImage *)image forState:(ASControlState)state;
+
+
+/**
+ *  Returns the background image used for a button state.
+ *
+ *  @param state The state that uses the image. Possible values are described in ASControlState.
+ *
+ *  @return The background image used for the specified state.
+ */
+- (UIImage * _Nullable)backgroundImageForState:(ASControlState)state;
 
 @end

AsyncDisplayKit/ASButtonNode.mm

@@ -10,6 +10,7 @@
 #import "ASStackLayoutSpec.h"
 #import "ASThread.h"
 #import "ASDisplayNode+Subclasses.h"
+#import "ASBackgroundLayoutSpec.h"
 
 @interface ASButtonNode ()
 {
@@ -24,6 +25,11 @@
   UIImage *_highlightedImage;
   UIImage *_selectedImage;
   UIImage *_disabledImage;
+
+  UIImage *_normalBackgroundImage;
+  UIImage *_highlightedBackgroundImage;
+  UIImage *_selectedBackgroundImage;
+  UIImage *_disabledBackgroundImage;
 }
 
 @end
@@ -41,33 +47,50 @@
 
     _titleNode = [[ASTextNode alloc] init];
     _imageNode = [[ASImageNode alloc] init];
+    _backgroundImageNode = [[ASImageNode alloc] init];
+    [_backgroundImageNode setContentMode:UIViewContentModeScaleToFill];
+    
+    [_titleNode setLayerBacked:YES];
+    [_imageNode setLayerBacked:YES];
+    [_backgroundImageNode setLayerBacked:YES];
       
     _contentHorizontalAlignment = ASAlignmentMiddle;
     _contentVerticalAlignment = ASAlignmentCenter;
     
+    [self addSubnode:_backgroundImageNode];
     [self addSubnode:_titleNode];
     [self addSubnode:_imageNode];
   }
   return self;
 }
 
+- (void)setLayerBacked:(BOOL)layerBacked
+{
+  ASDisplayNodeAssert(!layerBacked, @"ASButtonNode must not be layer backed!");
+  [super setLayerBacked:layerBacked];
+}
+
 - (void)setEnabled:(BOOL)enabled
 {
   [super setEnabled:enabled];
-  [self updateImage];
+  [self updateButtonContent];
-  [self updateTitle];
 }
 
 - (void)setHighlighted:(BOOL)highlighted
 {
   [super setHighlighted:highlighted];
-  [self updateImage];
+  [self updateButtonContent];
-  [self updateTitle];
 }
 
 - (void)setSelected:(BOOL)selected
 {
   [super setSelected:selected];
+  [self updateButtonContent];
+}
+
+- (void)updateButtonContent
+{
+  [self updateBackgroundImage];
   [self updateImage];
   [self updateTitle];
 }
@@ -120,6 +143,27 @@
   }
 }
 
+- (void)updateBackgroundImage
+{
+  ASDN::MutexLocker l(_propertyLock);
+  
+  UIImage *newImage;
+  if (self.enabled == NO && _disabledBackgroundImage) {
+    newImage = _disabledBackgroundImage;
+  } else if (self.highlighted && _highlightedBackgroundImage) {
+    newImage = _highlightedBackgroundImage;
+  } else if (self.selected && _selectedBackgroundImage) {
+    newImage = _selectedBackgroundImage;
+  } else {
+    newImage = _normalBackgroundImage;
+  }
+  
+  if (newImage != self.backgroundImageNode.image) {
+    self.backgroundImageNode.image = newImage;
+    [self setNeedsLayout];
+  }
+}
+
 - (CGFloat)contentSpacing
 {
   ASDN::MutexLocker l(_propertyLock);
@@ -152,6 +196,18 @@
   [self setNeedsLayout];
 }
 
+- (void)setTitle:(NSString *)title withFont:(UIFont *)font withColor:(UIColor *)color forState:(ASControlState)state
+{
+  NSDictionary *attributes = @{
+                               NSFontAttributeName: font ? font :[UIFont systemFontOfSize:[UIFont buttonFontSize]],
+                               NSForegroundColorAttributeName : color ? color : [UIColor blackColor]
+                               };
+    
+  NSAttributedString *string = [[NSAttributedString alloc] initWithString:title
+                                                               attributes:attributes];
+  [self setAttributedTitle:string forState:state];
+}
+
 - (NSAttributedString *)attributedTitleForState:(ASControlState)state
 {
   ASDN::MutexLocker l(_propertyLock);
@@ -246,6 +302,54 @@
   [self updateImage];
 }
 
+- (void)setBackgroundImage:(UIImage *)image forState:(ASControlState)state
+{
+  ASDN::MutexLocker l(_propertyLock);
+  switch (state) {
+    case ASControlStateNormal:
+      _normalBackgroundImage = image;
+      break;
+      
+    case ASControlStateHighlighted:
+      _highlightedBackgroundImage = image;
+      break;
+      
+    case ASControlStateSelected:
+      _selectedBackgroundImage = image;
+      break;
+      
+    case ASControlStateDisabled:
+      _disabledBackgroundImage = image;
+      break;
+      
+    default:
+      break;
+  }
+  [self updateBackgroundImage];
+}
+
+- (UIImage *)backgroundImageForState:(ASControlState)state
+{
+  ASDN::MutexLocker l(_propertyLock);
+  switch (state) {
+    case ASControlStateNormal:
+      return _normalBackgroundImage;
+      
+    case ASControlStateHighlighted:
+      return _highlightedBackgroundImage;
+      
+    case ASControlStateSelected:
+      return _selectedBackgroundImage;
+      
+    case ASControlStateDisabled:
+      return _disabledBackgroundImage;
+      
+    default:
+      return _normalBackgroundImage;
+  }
+
+}
+
 - (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
 {
   ASStackLayoutSpec *stack = [[ASStackLayoutSpec alloc] init];
@@ -265,12 +369,18 @@
   
   stack.children = children;
   
+  if (self.backgroundImageNode.image) {
+      return [ASBackgroundLayoutSpec backgroundLayoutSpecWithChild:stack
+                                                        background:self.backgroundImageNode];
+  } else {
       return stack;
+  }
 }
 
 - (void)layout
 {
   [super layout];
+  self.backgroundImageNode.hidden = self.backgroundImageNode.image == nil;
   self.imageNode.hidden = self.imageNode.image == nil;
   self.titleNode.hidden = self.titleNode.attributedString.length > 0 == NO;
 }

AsyncDisplayKit/ASCollectionNode+Beta.h

@@ -6,6 +6,7 @@
  * of patent rights can be found in the PATENTS file in the same directory.
  */
 
+#import "ASCollectionNode.h"
 @protocol ASCollectionViewLayoutFacilitatorProtocol;
 
 NS_ASSUME_NONNULL_BEGIN

AsyncDisplayKit/ASDisplayNode+Subclasses.h

@@ -91,6 +91,13 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (void)layoutDidFinish;
 
+/**
+ * @abstract Called on a background thread if !isNodeLoaded - called on the main thread if isNodeLoaded.
+ *
+ * @discussion When the .calculatedLayout property is set to a new ASLayout (directly from -calculateLayoutThatFits: or
+ * calculated via use of -layoutSpecThatFits:), subclasses may inspect it here.
+ */
+- (void)calculatedLayoutDidChange;
 
 /** @name Layout calculation */
 

AsyncDisplayKit/ASDisplayNode.h

@@ -641,7 +641,9 @@ NS_ASSUME_NONNULL_END
 @property (atomic, assign)           UIViewContentMode contentMode;         // default=UIViewContentModeScaleToFill
 
 @property (atomic, assign, getter=isUserInteractionEnabled) BOOL userInteractionEnabled; // default=YES (NO for layer-backed nodes)
+#if TARGET_OS_IOS
 @property (atomic, assign, getter=isExclusiveTouch) BOOL exclusiveTouch;    // default=NO
+#endif
 @property (atomic, assign, nullable) CGColorRef shadowColor;                // default=opaque rgb black
 @property (atomic, assign)           CGFloat shadowOpacity;                 // default=0.0
 @property (atomic, assign)           CGSize shadowOffset;                   // default=(0, -3)
@@ -658,6 +660,16 @@ NS_ASSUME_NONNULL_END
 - (BOOL)isFirstResponder;
 - (BOOL)canPerformAction:(nonnull SEL)action withSender:(nonnull id)sender;
 
+#if TARGET_OS_TV
+//Focus Engine
+- (void)setNeedsFocusUpdate;
+- (BOOL)canBecomeFocused;
+- (void)updateFocusIfNeeded;
+- (void)didUpdateFocusInContext:(nonnull UIFocusUpdateContext *)context withAnimationCoordinator:(nonnull UIFocusAnimationCoordinator *)coordinator;
+- (BOOL)shouldUpdateFocusInContext:(nonnull UIFocusUpdateContext *)context;
+- (nullable UIView *)preferredFocusedView;
+#endif
+
 // Accessibility support
 @property (atomic, assign)           BOOL isAccessibilityElement;
 @property (nullable, atomic, copy)   NSString *accessibilityLabel;

AsyncDisplayKit/ASDisplayNode.mm

@@ -594,6 +594,7 @@ static ASDisplayNodeMethodOverrides GetASDisplayNodeMethodOverrides(Class c)
     _layout = [self calculateLayoutThatFits:constrainedSize];
     _constrainedSize = constrainedSize;
     _flags.isMeasured = YES;
+    [self calculatedLayoutDidChange];
   }
 
   ASDisplayNodeAssertTrue(_layout.layoutableObject == self);
@@ -615,6 +616,10 @@ static ASDisplayNodeMethodOverrides GetASDisplayNodeMethodOverrides(Class c)
   return _layout;
 }
 
+- (void)calculatedLayoutDidChange
+{
+}
+
 - (BOOL)displaysAsynchronously
 {
   ASDN::MutexLocker l(_propertyLock);
@@ -2312,6 +2317,38 @@ static void _recursivelySetDisplaySuspended(ASDisplayNode *node, CALayer *layer,
   return self;
 }
 
+#if TARGET_OS_TV
+#pragma mark - UIFocusEnvironment Protocol (tvOS)
+
+- (void)setNeedsFocusUpdate
+{
+  
+}
+
+- (void)updateFocusIfNeeded
+{
+  
+}
+
+- (BOOL)shouldUpdateFocusInContext:(UIFocusUpdateContext *)context
+{
+  return YES;
+}
+
+- (void)didUpdateFocusInContext:(UIFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
+{
+  
+}
+
+- (UIView *)preferredFocusedView
+{
+  if (self.nodeLoaded) {
+    return self.view;
+  } else {
+    return nil;
+  }
+}
+#endif
 @end
 
 @implementation ASDisplayNode (Debugging)

AsyncDisplayKit/ASEditableTextNode.mm

@@ -163,7 +163,9 @@
   _textKitComponents.textView = self.textView;
   //_textKitComponents.textView = NO; // Unfortunately there's a bug here with iOS 7 DP5 that causes the text-view to only be one line high when scrollEnabled is NO. rdar://14729288
   _textKitComponents.textView.delegate = self;
+  #if TARGET_OS_IOS
   _textKitComponents.textView.editable = YES;
+  #endif
   _textKitComponents.textView.typingAttributes = _typingAttributes;
   _textKitComponents.textView.returnKeyType = _returnKeyType;
   _textKitComponents.textView.accessibilityHint = _placeholderTextKitComponents.textStorage.string;

AsyncDisplayKit/ASImageNode.mm

@@ -235,7 +235,21 @@
     UIRectFill({ .size = backingSize });
   }
 
+  // iOS 9 appears to contain a thread safety regression when drawing the same CGImageRef on
+  // multiple threads concurrently.  In fact, instead of crashing, it appears to deadlock.
+  // The issue is present in Mac OS X El Capitan and has been seen hanging Pro apps like Adobe Premier,
+  // as well as iOS games, and a small number of ASDK apps that provide the same image reference
+  // to many separate ASImageNodes.  A workaround is to set .displaysAsynchronously = NO for the nodes
+  // that may get the same pointer for a given UI asset image, etc.
+  // FIXME: We should replace @synchronized here, probably using a global, locked NSMutableSet, and
+  // only if the object already exists in the set we should create a semaphore to signal waiting threads
+  // upon removal of the object from the set when the operation completes.
+  // Another option is to have ASDisplayNode+AsyncDisplay coordinate these cases, and share the decoded buffer.
+  // Details tracked in https://github.com/facebook/AsyncDisplayKit/issues/1068
+  
+  @synchronized(image) {
     [image drawInRect:imageDrawRect];
+  }
 
   if (isCancelled()) {
     UIGraphicsEndImageContext();

AsyncDisplayKit/ASMapNode.h

@@ -7,6 +7,7 @@
  */
 
 #import <AsyncDisplayKit/ASImageNode.h>
+#if TARGET_OS_IOS
 #import <MapKit/MapKit.h>
 
 NS_ASSUME_NONNULL_BEGIN
@@ -14,7 +15,13 @@ NS_ASSUME_NONNULL_BEGIN
 @interface ASMapNode : ASImageNode
 
 /**
- The current region of ASMapNode. This can be set at any time and ASMapNode will animate the change. This property may be set from a background thread before the node is loaded, and will automatically be applied to define the region of the static snapshot (if .liveMap = NO) or the internal MKMapView (otherwise).
+ The current options of ASMapNode. This can be set at any time and ASMapNode will animate the change.<br><br>This property may be set from a background thread before the node is loaded, and will automatically be applied to define the behavior of the static snapshot (if .liveMap = NO) or the internal MKMapView (otherwise).<br><br> Changes to the region and camera options will only be animated when when the liveMap mode is enabled, otherwise these options will be applied statically to the new snapshot. <br><br> The options object is used to specify properties even when the liveMap mode is enabled, allowing seamless transitions between the snapshot and liveMap (as well as back to the snapshot).
+ */
+@property (nonatomic, strong) MKMapSnapshotOptions *options;
+
+/** The region is simply the sub-field on the options object.  If the objects object is reset,
+    this will in effect be overwritten and become the value of the .region property on that object.
+    Defaults to MKCoordinateRegionForMapRect(MKMapRectWorld).
  */
 @property (nonatomic, assign) MKCoordinateRegion region;
 
@@ -29,7 +36,8 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic, assign, getter=isLiveMap) BOOL liveMap;
 
 /**
- @abstract Whether ASMapNode should automatically request a new map snapshot to correspond to the new node size. Defaults to YES.
+ @abstract Whether ASMapNode should automatically request a new map snapshot to correspond to the new node size.
+ @default Default value is YES.
  @discussion If mapSize is set then this will be set to NO, since the size will be the same in all orientations.
  */
 @property (nonatomic, assign) BOOL needsMapReloadOnBoundsChange;
@@ -40,7 +48,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic, weak) id <MKMapViewDelegate> mapDelegate;
 
 /**
- * @discussion This method set the annotations of the static map view and also to the live map view. Passing an empty array clears the map of any annotations.
+ * @discussion This method sets the annotations of the static map view and also to the live map view. Passing an empty array clears the map of any annotations.
  * @param annotations An array of objects that conform to the MKAnnotation protocol
  */
 - (void)setAnnotations:(NSArray<id<MKAnnotation>> *)annotations;
@@ -48,3 +56,5 @@ NS_ASSUME_NONNULL_BEGIN
 @end
 
 NS_ASSUME_NONNULL_END
+
+#endif

AsyncDisplayKit/ASMapNode.mm

@@ -6,6 +6,7 @@
  * of patent rights can be found in the PATENTS file in the same directory.
  */
 
+#if TARGET_OS_IOS
 #import "ASMapNode.h"
 #import <AsyncDisplayKit/ASDisplayNode+Subclasses.h>
 #import <AsyncDisplayKit/ASDisplayNodeExtras.h>
@@ -17,7 +18,6 @@
 {
   ASDN::RecursiveMutex _propertyLock;
   MKMapSnapshotter *_snapshotter;
-  MKMapSnapshotOptions *_options;
   NSArray *_annotations;
   CLLocationCoordinate2D _centerCoordinateOfMap;
 }
@@ -27,7 +27,7 @@
 
 @synthesize needsMapReloadOnBoundsChange = _needsMapReloadOnBoundsChange;
 @synthesize mapDelegate = _mapDelegate;
-@synthesize region = _region;
+@synthesize options = _options;
 @synthesize liveMap = _liveMap;
 
 #pragma mark - Lifecycle
@@ -42,13 +42,6 @@
   _needsMapReloadOnBoundsChange = YES;
   _liveMap = NO;
   _centerCoordinateOfMap = kCLLocationCoordinate2DInvalid;
-  
-  //Default world-scale view
-  _region = MKCoordinateRegionForMapRect(MKMapRectWorld);
-  
-  _options = [[MKMapSnapshotOptions alloc] init];
-  _options.region = _region;
-  
   return self;
 }
 
@@ -118,23 +111,40 @@
   _needsMapReloadOnBoundsChange = needsMapReloadOnBoundsChange;
 }
 
-- (MKCoordinateRegion)region
+- (MKMapSnapshotOptions *)options
 {
   ASDN::MutexLocker l(_propertyLock);
-  return _region;
+  if (!_options) {
+    _options = [[MKMapSnapshotOptions alloc] init];
+    _options.region = MKCoordinateRegionForMapRect(MKMapRectWorld);
+    CGSize calculatedSize = self.calculatedSize;
+    if (!CGSizeEqualToSize(calculatedSize, CGSizeZero)) {
+      _options.size = calculatedSize;
+    }
+  }
+  return _options;
+}
+
+- (void)setOptions:(MKMapSnapshotOptions *)options
+{
+  ASDN::MutexLocker l(_propertyLock);
+  _options = options;
+  if (self.isLiveMap) {
+    [self applySnapshotOptions];
+  } else {
+    [self resetSnapshotter];
+    [self takeSnapshot];
+  }
+}
+
+- (MKCoordinateRegion)region
+{
+  return self.options.region;
 }
 
 - (void)setRegion:(MKCoordinateRegion)region
 {
-  ASDN::MutexLocker l(_propertyLock);
+  self.options.region = region;
-  _region = region;
-  if (self.isLiveMap) {
-    [_mapView setRegion:_region animated:YES];
-  } else {
-    _options.region = _region;
-    [self resetSnapshotter];
-    [self takeSnapshot];
-  }
 }
 
 #pragma mark - Snapshotter
@@ -182,14 +192,25 @@
 - (void)setUpSnapshotter
 {
   ASDisplayNodeAssert(!CGSizeEqualToSize(CGSizeZero, self.calculatedSize), @"self.calculatedSize can not be zero. Make sure that you are setting a preferredFrameSize or wrapping ASMapNode in a ASRatioLayoutSpec or similar.");
-  _options.size = self.calculatedSize;
+  _snapshotter = [[MKMapSnapshotter alloc] initWithOptions:self.options];
-  _snapshotter = [[MKMapSnapshotter alloc] initWithOptions:_options];
 }
 
 - (void)resetSnapshotter
 {
+  // FIXME: The semantics of this method / name would suggest that we cancel + destroy the snapshotter,
+  // but not that we create a new one.  We should probably only create the new one in -takeSnapshot or something.
   [_snapshotter cancel];
-  _snapshotter = [[MKMapSnapshotter alloc] initWithOptions:_options];
+  _snapshotter = [[MKMapSnapshotter alloc] initWithOptions:self.options];
+}
+
+- (void)applySnapshotOptions
+{
+  MKMapSnapshotOptions *options = self.options;
+  [_mapView setCamera:options.camera animated:YES];
+  [_mapView setRegion:options.region animated:YES];
+  [_mapView setMapType:options.mapType];
+  _mapView.showsBuildings = options.showsBuildings;
+  _mapView.showsPointsOfInterest = options.showsPointsOfInterest;
 }
 
 #pragma mark - Actions
@@ -200,7 +221,7 @@
     __weak ASMapNode *weakSelf = self;
     _mapView = [[MKMapView alloc] initWithFrame:CGRectZero];
     _mapView.delegate = weakSelf.mapDelegate;
-    [_mapView setRegion:_options.region];
+    [weakSelf applySnapshotOptions];
     [_mapView addAnnotations:_annotations];
     [weakSelf setNeedsLayout];
     [weakSelf.view addSubview:_mapView];
@@ -213,6 +234,7 @@
 
 - (void)removeLiveMap
 {
+  // FIXME: With MKCoordinateRegion, isn't the center coordinate fully specified?  Do we need this?
   _centerCoordinateOfMap = _mapView.centerCoordinate;
   [_mapView removeFromSuperview];
   _mapView = nil;
@@ -231,7 +253,25 @@
 }
 
 #pragma mark - Layout
-// Layout isn't usually needed in the box model, but since we are making use of MKMapView which is hidden in an ASDisplayNode this is preferred.
+- (void)setSnapshotSizeIfNeeded:(CGSize)snapshotSize
+{
+  if (!CGSizeEqualToSize(self.options.size, snapshotSize)) {
+    _options.size = snapshotSize;
+    [self resetSnapshotter];
+  }
+}
+
+- (CGSize)calculateSizeThatFits:(CGSize)constrainedSize
+{
+  CGSize size = self.preferredFrameSize;
+  if (CGSizeEqualToSize(size, CGSizeZero)) {
+    size = constrainedSize;
+  }
+  [self setSnapshotSizeIfNeeded:size];
+  return constrainedSize;
+}
+
+// Layout isn't usually needed in the box model, but since we are making use of MKMapView this is preferred.
 - (void)layout
 {
   [super layout];
@@ -239,11 +279,13 @@
     _mapView.frame = CGRectMake(0.0f, 0.0f, self.calculatedSize.width, self.calculatedSize.height);
   } else {
     // If our bounds.size is different from our current snapshot size, then let's request a new image from MKMapSnapshotter.
-    if (!CGSizeEqualToSize(_options.size, self.bounds.size) && _needsMapReloadOnBoundsChange) {
+    if (_needsMapReloadOnBoundsChange) {
-      _options.size = self.bounds.size;
+      [self setSnapshotSizeIfNeeded:self.bounds.size];
-      [self resetSnapshotter];
+      // FIXME: Adding a check for FetchData here seems to cause intermittent map load failures, but shouldn't.
+      // if (ASInterfaceStateIncludesFetchData(self.interfaceState)) {
       [self takeSnapshot];
     }
   }
 }
 @end
+#endif

AsyncDisplayKit/ASMultiplexImageNode.h

@@ -6,9 +6,10 @@
  * of patent rights can be found in the PATENTS file in the same directory.
  */
 
+#if TARGET_OS_IOS
+
 #import <AsyncDisplayKit/ASImageNode.h>
 #import <AsyncDisplayKit/ASImageProtocols.h>
-
 #import <Photos/Photos.h>
 
 NS_ASSUME_NONNULL_BEGIN
@@ -116,13 +117,14 @@ typedef NS_ENUM(NSUInteger, ASMultiplexImageNodeErrorCode) {
  */
 @property (nullable, nonatomic, readonly) ASImageIdentifier displayedImageIdentifier;
 
+#if TARGET_OS_IOS
 /**
  * @abstract The image manager that this image node should use when requesting images from the Photos framework. If this is `nil` (the default), then `PHImageManager.defaultManager` is used.
  
  * @see `+[NSURL URLWithAssetLocalIdentifier:targetSize:contentMode:options:]` below.
  */
 @property (nonatomic, strong) PHImageManager *imageManager;
-
+#endif
 @end
 
 
@@ -229,6 +231,7 @@ didFinishDownloadingImageWithIdentifier:(ASImageIdentifier)imageIdentifier
  */
 - (nullable NSURL *)multiplexImageNode:(ASMultiplexImageNode *)imageNode URLForImageIdentifier:(ASImageIdentifier)imageIdentifier;
 
+#if TARGET_OS_IOS
 /**
  * @abstract A PHAsset for the specific asset local identifier
  * @param imageNode The sender.
@@ -240,11 +243,11 @@ didFinishDownloadingImageWithIdentifier:(ASImageIdentifier)imageIdentifier
  * @return A PHAsset corresponding to `assetLocalIdentifier`, or nil if none is available.
  */
 - (nullable PHAsset *)multiplexImageNode:(ASMultiplexImageNode *)imageNode assetForLocalIdentifier:(NSString *)assetLocalIdentifier;
-
+#endif
 @end
 
 #pragma mark - 
-
+#if TARGET_OS_IOS
 @interface NSURL (ASPhotosFrameworkURLs)
 
 /**
@@ -261,5 +264,8 @@ didFinishDownloadingImageWithIdentifier:(ASImageIdentifier)imageIdentifier
                                options:(PHImageRequestOptions *)options;
 
 @end
+#endif
 
 NS_ASSUME_NONNULL_END
+
+#endif

AsyncDisplayKit/ASMultiplexImageNode.mm

@@ -6,12 +6,12 @@
  * of patent rights can be found in the PATENTS file in the same directory.
  */
 
-#import "ASMultiplexImageNode.h"
+#if TARGET_OS_IOS
 
+#import "ASMultiplexImageNode.h"
 #import <AssetsLibrary/AssetsLibrary.h>
 
 #import <Photos/Photos.h>
-
 #import <libkern/OSAtomic.h>
 
 #import "ASAvailability.h"
@@ -112,6 +112,7 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
  */
 - (void)_fetchImageWithIdentifierFromCache:(id)imageIdentifier URL:(NSURL *)imageURL completion:(void (^)(UIImage *image))completionBlock;
 
+#if TARGET_OS_IOS
 /**
   @abstract Loads the image corresponding to the given assetURL from the device's Assets Library.
   @param imageIdentifier The identifier for the image to be loaded. May not be nil.
@@ -131,7 +132,7 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
     @param error An error describing why the load failed, if it failed; nil otherwise.
  */
 - (void)_loadPHAssetWithRequest:(ASPhotosFrameworkImageRequest *)request identifier:(id)imageIdentifier completion:(void (^)(UIImage *image, NSError *error))completionBlock;
-
+#endif
 /**
  @abstract Downloads the image corresponding to the given imageIdentifier from the given URL.
  @param imageIdentifier The identifier for the image to be downloaded. May not be nil.
@@ -262,7 +263,9 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
   _dataSource = dataSource;
   _dataSourceFlags.image = [_dataSource respondsToSelector:@selector(multiplexImageNode:imageForImageIdentifier:)];
   _dataSourceFlags.URL = [_dataSource respondsToSelector:@selector(multiplexImageNode:URLForImageIdentifier:)];
+  #if TARGET_OS_IOS
   _dataSourceFlags.asset = [_dataSource respondsToSelector:@selector(multiplexImageNode:assetForLocalIdentifier:)];
+  #endif
 }
 
 #pragma mark -
@@ -455,6 +458,7 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
     return;
   }
 
+  #if TARGET_OS_IOS
   // If it's an assets-library URL, we need to fetch it from the assets library.
   if ([[nextImageURL scheme] isEqualToString:kAssetsLibraryURLScheme]) {
     // Load the asset.
@@ -470,6 +474,7 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
       finishedLoadingBlock(image, nextImageIdentifier, error);
     }];
   }
+  #endif
   else // Otherwise, it's a web URL that we can download.
   {
     // First, check the cache.
@@ -499,7 +504,7 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
     }];
   }
 }
-
+#if TARGET_OS_IOS
 - (void)_loadALAssetWithIdentifier:(id)imageIdentifier URL:(NSURL *)assetURL completion:(void (^)(UIImage *image, NSError *error))completionBlock
 {
   ASDisplayNodeAssertNotNil(imageIdentifier, @"imageIdentifier is required");
@@ -609,7 +614,7 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
   _phImageRequestOperation = newImageRequestOp;
   [phImageRequestQueue addOperation:newImageRequestOp];
 }
-
+#endif
 - (void)_fetchImageWithIdentifierFromCache:(id)imageIdentifier URL:(NSURL *)imageURL completion:(void (^)(UIImage *image))completionBlock
 {
   ASDisplayNodeAssertNotNil(imageIdentifier, @"imageIdentifier is required");
@@ -708,7 +713,7 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
 }
 
 @end
-
+#if TARGET_OS_IOS
 @implementation NSURL (ASPhotosFrameworkURLs)
 
 + (NSURL *)URLWithAssetLocalIdentifier:(NSString *)assetLocalIdentifier targetSize:(CGSize)targetSize contentMode:(PHImageContentMode)contentMode options:(PHImageRequestOptions *)options
@@ -721,3 +726,6 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
 }
 
 @end
+#endif
+
+#endif

AsyncDisplayKit/ASPagerNode.m

@@ -48,12 +48,13 @@
   [super didLoad];
   
   ASCollectionView *cv = self.view;
-  
+#if TARGET_OS_IOS
   cv.pagingEnabled = YES;
+  cv.scrollsToTop = NO;
+#endif
   cv.allowsSelection = NO;
   cv.showsVerticalScrollIndicator = NO;
   cv.showsHorizontalScrollIndicator = NO;
-  cv.scrollsToTop = NO;
   
   // Zeroing contentInset is important, as UIKit will set the top inset for the navigation bar even though
   // our view is only horizontally scrollable.  This causes UICollectionViewFlowLayout to log a warning.

AsyncDisplayKit/ASTableViewProtocols.h

@@ -73,8 +73,9 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath;
 - (nullable NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath;
+#if TARGET_OS_IOS
 - (nullable NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath;
-
+#endif
 - (BOOL)tableView:(UITableView *)tableView shouldIndentWhileEditingRowAtIndexPath:(NSIndexPath *)indexPath;
 
 - (void)tableView:(UITableView*)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *)indexPath;

AsyncDisplayKit/ASTextNode.mm

@@ -35,13 +35,13 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation
 
 - (instancetype)initWithRenderer:(ASTextKitRenderer *)renderer
                       textOrigin:(CGPoint)textOrigin
-                 backgroundColor:(CGColorRef)backgroundColor;
+                 backgroundColor:(UIColor *)backgroundColor;
 
 @property (nonatomic, strong, readonly) ASTextKitRenderer *renderer;
 
 @property (nonatomic, assign, readonly) CGPoint textOrigin;
 
-@property (nonatomic, assign, readonly) CGColorRef backgroundColor;
+@property (nonatomic, strong, readonly) UIColor *backgroundColor;
 
 @end
 
@@ -49,20 +49,18 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation
 
 - (instancetype)initWithRenderer:(ASTextKitRenderer *)renderer
                       textOrigin:(CGPoint)textOrigin
-                 backgroundColor:(CGColorRef)backgroundColor
+                 backgroundColor:(UIColor *)backgroundColor
 {
   if (self = [super init]) {
     _renderer = renderer;
     _textOrigin = textOrigin;
-    _backgroundColor = CGColorRetain(backgroundColor);
+    _backgroundColor = backgroundColor;
   }
   return self;
 }
 
 - (void)dealloc
 {
-  CGColorRelease(_backgroundColor);
-  
   // Destruction of the layout managers/containers/text storage is quite
   // expensive, and can take some time, so we dispatch onto a bg queue to
   // actually dealloc.
@@ -182,24 +180,11 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
   NSString *truncationString = [_composedTruncationString string];
   if (plainString.length > 50)
     plainString = [[plainString substringToIndex:50] stringByAppendingString:@"\u2026"];
-  return [NSString stringWithFormat:@"<%@: %p; text = \"%@\"; truncation string = \"%@\"; frame = %@>", self.class, self, plainString, truncationString, self.nodeLoaded ? NSStringFromCGRect(self.layer.frame) : nil];
+  return [NSString stringWithFormat:@"<%@: %p; text = \"%@\"; truncation string = \"%@\"; frame = %@; renderer = %p>", self.class, self, plainString, truncationString, self.nodeLoaded ? NSStringFromCGRect(self.layer.frame) : nil, _renderer];
 }
 
 #pragma mark - ASDisplayNode
 
-- (CGSize)calculateSizeThatFits:(CGSize)constrainedSize
-{
-  ASDisplayNodeAssert(constrainedSize.width >= 0, @"Constrained width for text (%f) is too  narrow", constrainedSize.width);
-  ASDisplayNodeAssert(constrainedSize.height >= 0, @"Constrained height for text (%f) is too short", constrainedSize.height);
-
-  _constrainedSize = constrainedSize;
-  [self _invalidateRenderer];
-  ASDisplayNodeRespectThreadAffinityOfNode(self, ^{
-    [self setNeedsDisplay];
-  });
-  return [[self _renderer] size];
-}
-
 // FIXME: Re-evaluate if it is still the right decision to clear the renderer at this stage.
 // This code was written before TextKit and when 512MB devices were still the overwhelming majority.
 - (void)displayDidFinish
@@ -240,13 +225,13 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
 - (void)setFrame:(CGRect)frame
 {
   [super setFrame:frame];
-  [self _invalidateRendererIfNeeded:frame.size];
+  [self _invalidateRendererIfNeededForBoundsSize:frame.size];
 }
 
 - (void)setBounds:(CGRect)bounds
 {
   [super setBounds:bounds];
-  [self _invalidateRendererIfNeeded:bounds.size];
+  [self _invalidateRendererIfNeededForBoundsSize:bounds.size];
 }
 
 #pragma mark - Renderer Management
@@ -291,12 +276,12 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
 
 - (void)_invalidateRendererIfNeeded
 {
-  [self _invalidateRendererIfNeeded:self.bounds.size];
+  [self _invalidateRendererIfNeededForBoundsSize:self.bounds.size];
 }
 
-- (void)_invalidateRendererIfNeeded:(CGSize)newSize
+- (void)_invalidateRendererIfNeededForBoundsSize:(CGSize)boundsSize
 {
-  if ([self _needInvalidateRenderer:newSize]) {
+  if ([self _needInvalidateRendererForBoundsSize:boundsSize]) {
     // Our bounds of frame have changed to a size that is not identical to our constraining size,
     // so our previous layout information is invalid, and TextKit may draw at the
     // incorrect origin.
@@ -305,7 +290,9 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
   }
 }
 
-- (BOOL)_needInvalidateRenderer:(CGSize)newSize
+#pragma mark - Layout and Sizing
+
+- (BOOL)_needInvalidateRendererForBoundsSize:(CGSize)boundsSize
 {
   if (!_renderer) {
     return YES;
@@ -313,9 +300,9 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
   
   // If the size is not the same as the constraint we provided to the renderer, start out assuming we need
   // a new one.  However, there are common cases where the constrained size doesn't need to be the same as calculated.
-  CGSize oldSize = _renderer.constrainedSize;
+  CGSize rendererConstrainedSize = _renderer.constrainedSize;
   
-  if (CGSizeEqualToSize(newSize, oldSize)) {
+  if (CGSizeEqualToSize(boundsSize, rendererConstrainedSize)) {
     return NO;
   } else {
     // It is very common to have a constrainedSize with a concrete, specific width but +Inf height.
@@ -324,7 +311,12 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
     // experience truncation and don't need to recreate the renderer with the size it already calculated,
     // as this would essentially serve to set its constrainedSize to be its calculatedSize (unnecessary).
     ASLayout *layout = self.calculatedLayout;
-    if (layout != nil && CGSizeEqualToSize(newSize, layout.size)) {
+    if (layout != nil && CGSizeEqualToSize(boundsSize, layout.size)) {
+      if (boundsSize.width != rendererConstrainedSize.width) {
+        // Don't bother changing _constrainedSize, as ASDisplayNode's -measure: method would have a cache miss
+        // and ask us to recalculate layout if it were called with the same calculatedSize that got us to this point!
+        _renderer.constrainedSize = boundsSize;
+      }
       return NO;
     } else {
       return YES;
@@ -332,6 +324,32 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
   }
 }
 
+- (void)calculatedLayoutDidChange
+{
+  ASLayout *layout = self.calculatedLayout;
+  if (layout != nil) {
+    _renderer.constrainedSize = layout.size;
+  }
+}
+
+- (CGSize)calculateSizeThatFits:(CGSize)constrainedSize
+{
+  ASDisplayNodeAssert(constrainedSize.width >= 0, @"Constrained width for text (%f) is too  narrow", constrainedSize.width);
+  ASDisplayNodeAssert(constrainedSize.height >= 0, @"Constrained height for text (%f) is too short", constrainedSize.height);
+  
+  _constrainedSize = constrainedSize;
+  
+  // Instead of invalidating the renderer, in case this is a new call with a different constrained size,
+  // just update the size of the NSTextContainer that is owned by the renderer's internal context object.
+  [self _renderer].constrainedSize = _constrainedSize;
+  
+  ASDisplayNodeRespectThreadAffinityOfNode(self, ^{
+    [self setNeedsDisplay];
+  });
+  
+  return [[self _renderer] size];
+}
+
 #pragma mark - Modifying User Text
 
 - (void)setAttributedString:(NSAttributedString *)attributedString
@@ -409,12 +427,10 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
 
   // Fill background
   if (!isRasterizing) {
-    CGColorRef backgroundColor = parameters.backgroundColor;
+    UIColor *backgroundColor = parameters.backgroundColor;
     if (backgroundColor) {
-      CGContextSetFillColorWithColor(context, backgroundColor);
+      [backgroundColor setFill];
-      CGContextSetBlendMode(context, kCGBlendModeCopy);
+      UIRectFillUsingBlendMode(CGContextGetClipBoundingBox(context), kCGBlendModeCopy);
-      CGContextFillRect(context, CGContextGetClipBoundingBox(context));
-      CGContextSetBlendMode(context, kCGBlendModeNormal);
     }
   }
 
@@ -430,14 +446,15 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
 
 - (NSObject *)drawParametersForAsyncLayer:(_ASDisplayLayer *)layer
 {
-  [self _invalidateRendererIfNeeded];
+  CGRect bounds = self.bounds;
+  [self _invalidateRendererIfNeededForBoundsSize:bounds.size];
 
   // Offset the text origin by any shadow padding
   UIEdgeInsets shadowPadding = [self shadowPadding];
-  CGPoint textOrigin = CGPointMake(self.bounds.origin.x - shadowPadding.left, self.bounds.origin.y - shadowPadding.top);
+  CGPoint textOrigin = CGPointMake(bounds.origin.x - shadowPadding.left, bounds.origin.y - shadowPadding.top);
   return [[ASTextNodeDrawParameters alloc] initWithRenderer:[self _renderer]
                                                  textOrigin:textOrigin
-                                            backgroundColor:self.backgroundColor.CGColor];
+                                            backgroundColor:self.backgroundColor];
 }
 
 #pragma mark - Attributes

AsyncDisplayKit/ASVideoNode.h

@@ -1,3 +1,10 @@
+/* Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
 
 #import <AsyncDisplayKit/AsyncDisplayKit.h>
 
@@ -9,6 +16,10 @@ typedef NS_ENUM(NSUInteger, ASVideoGravity) {
 
 @protocol ASVideoNodeDelegate;
 
+// If you need ASVideoNode, please use AsyncDisplayKit master until this comment is removed.
+// As of 1.9.6, ASVideoNode accidentally triggers creating the AVPlayerLayer even before playing
+// the video.  Using a lot of them intended to show static frame placeholders will be slow.
+
 @interface ASVideoNode : ASControlNode
 @property (atomic, strong, readwrite) AVAsset *asset;
 @property (atomic, strong, readonly) AVPlayer *player;

AsyncDisplayKit/ASVideoNode.mm

@@ -1,7 +1,12 @@
-
+/* Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
 
 #import "ASVideoNode.h"
-#import "ASDisplayNode+Beta.h"
 
 @interface ASVideoNode ()
 {
@@ -34,12 +39,18 @@
 
 - (instancetype)init
 {
-  if (!(self = [super init])) { return nil; }
+  if (!(self = [super init])) {
+    return nil;
+  }
   
   _previewQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
   
   [ASDisplayNode setShouldUseNewRenderingRange:YES];
 
+#if DEBUG
+  NSLog(@"*** Warning: ASVideoNode is a new component - the 1.9.6 version may cause performance hiccups.");
+#endif
+  
   self.gravity = AVLayerVideoGravityResizeAspect;
   
   [self addTarget:self action:@selector(tapped) forControlEvents:ASControlNodeEventTouchUpInside];

AsyncDisplayKit/Details/ASPhotosFrameworkImageRequest.h

@@ -5,7 +5,7 @@
 //  Created by Adlai Holler on 9/25/15.
 //  Copyright © 2015 Facebook. All rights reserved.
 //
-
+#if TARGET_OS_IOS
 #import <Foundation/Foundation.h>
 #import <Photos/Photos.h>
 
@@ -64,3 +64,4 @@ extern NSString *const ASPhotosURLScheme;
 @end
 
 // NS_ASSUME_NONNULL_END
+#endif

AsyncDisplayKit/Details/ASPhotosFrameworkImageRequest.m

@@ -5,7 +5,7 @@
 //  Created by Adlai Holler on 9/25/15.
 //  Copyright © 2015 Facebook. All rights reserved.
 //
-
+#if TARGET_OS_IOS
 #import "ASPhotosFrameworkImageRequest.h"
 #import "ASBaseDefines.h"
 #import "ASAvailability.h"
@@ -159,3 +159,4 @@ static NSString *const _ASPhotosURLQueryKeyCropHeight = @"crop_h";
 }
 
 @end
+#endif

AsyncDisplayKit/Details/ASRangeControllerBeta.mm

@@ -21,8 +21,9 @@
 {
   BOOL _rangeIsValid;
   BOOL _queuedRangeUpdate;
+  BOOL _layoutControllerImplementsSetVisibleIndexPaths;
   ASScrollDirection _scrollDirection;
-  NSSet *_allPreviousIndexPaths;
+  NSSet<NSIndexPath *> *_allPreviousIndexPaths;
 }
 
 @end
@@ -58,64 +59,84 @@
   });
 }
 
+- (void)setLayoutController:(id<ASLayoutController>)layoutController
+{
+  _layoutController = layoutController;
+  _layoutControllerImplementsSetVisibleIndexPaths = [_layoutController respondsToSelector:@selector(setVisibleNodeIndexPaths:)];
+}
+
 - (void)_updateVisibleNodeIndexPaths
 {
-  if (!_queuedRangeUpdate) {
+  ASDisplayNodeAssert(_layoutController, @"An ASLayoutController is required by ASRangeController");
+  if (!_queuedRangeUpdate || !_layoutController) {
     return;
   }
 
-  // FIXME: Consider if we need to check this separately from the range calculation below.
+  // TODO: Consider if we need to use this codepath, or can rely on something more similar to the data & display ranges
-  NSArray *visibleNodePaths = [_dataSource visibleNodeIndexPathsForRangeController:self];
+  // Example: ... = [_layoutController indexPathsForScrolling:_scrollDirection rangeType:ASLayoutRangeTypeVisible];
+  NSArray<NSIndexPath *> *visibleNodePaths = [_dataSource visibleNodeIndexPathsForRangeController:self];
 
   if (visibleNodePaths.count == 0) { // if we don't have any visibleNodes currently (scrolled before or after content)...
     _queuedRangeUpdate = NO;
     return; // don't do anything for this update, but leave _rangeIsValid == NO to make sure we update it later
   }
 
-  CGSize viewportSize = [_dataSource viewportSizeForRangeController:self];
+  [_layoutController setViewportSize:[_dataSource viewportSizeForRangeController:self]];
-  [_layoutController setViewportSize:viewportSize];
 
   // the layout controller needs to know what the current visible indices are to calculate range offsets
-  if ([_layoutController respondsToSelector:@selector(setVisibleNodeIndexPaths:)]) {
+  if (_layoutControllerImplementsSetVisibleIndexPaths) {
     [_layoutController setVisibleNodeIndexPaths:visibleNodePaths];
   }
   
-  NSArray *allNodes = [_dataSource completedNodes];
+  // allNodes is a 2D array: it contains arrays for each section, each containing nodes.
-  NSArray *currentSectionNodes = nil;
+  NSArray<NSArray *> *allNodes = [_dataSource completedNodes];
-  NSInteger currentSectionIndex = -1; // Will be unequal to any indexPath.section, so we set currentSectionNodes.
-  
   NSUInteger numberOfSections = [allNodes count];
+  
+  NSArray<ASDisplayNode *> *currentSectionNodes = nil;
+  NSInteger currentSectionIndex = -1; // Set to -1 so we don't match any indexPath.section on the first iteration.
   NSUInteger numberOfNodesInSection = 0;
   
-  NSSet *visibleIndexPaths  = [NSSet setWithArray:visibleNodePaths];
+  NSSet<NSIndexPath *> *visibleIndexPaths = [NSSet setWithArray:visibleNodePaths];
-                        //  = [_layoutController indexPathsForScrolling:_scrollDirection rangeType:ASLayoutRangeTypeVisible];
+  NSSet<NSIndexPath *> *displayIndexPaths = nil;
-  NSSet *displayIndexPaths = nil;
+  NSSet<NSIndexPath *> *fetchDataIndexPaths = nil;
-  NSSet *fetchDataIndexPaths = nil;
+  
-  NSMutableSet *allIndexPaths = nil;
+  // Prioritize the order in which we visit each.  Visible nodes should be updated first so they are enqueued on
-  NSMutableArray *modifiedIndexPaths = (RangeControllerLoggingEnabled ? [NSMutableArray array] : nil);
+  // the network or display queues before preloading (offscreen) nodes are enqueued.
+  NSMutableOrderedSet<NSIndexPath *> *allIndexPaths = [[NSMutableOrderedSet alloc] initWithSet:visibleIndexPaths];
   
   ASInterfaceState selfInterfaceState = [_dataSource interfaceStateForRangeController:self];
   
   if (ASInterfaceStateIncludesVisible(selfInterfaceState)) {
     // If we are already visible, get busy!  Better get started on preloading before the user scrolls more...
     fetchDataIndexPaths = [_layoutController indexPathsForScrolling:_scrollDirection rangeType:ASLayoutRangeTypeFetchData];
-    displayIndexPaths   = [_layoutController indexPathsForScrolling:_scrollDirection rangeType:ASLayoutRangeTypeDisplay];
 
-    // Typically the fetchDataIndexPaths will be the largest, and be a superset of the others, though it may be disjoint.
+    ASRangeTuningParameters parametersFetchData = [_layoutController tuningParametersForRangeType:ASLayoutRangeTypeFetchData];
-    allIndexPaths = [fetchDataIndexPaths mutableCopy];
+    ASRangeTuningParameters parametersDisplay = [_layoutController tuningParametersForRangeType:ASLayoutRangeTypeDisplay];
-    [allIndexPaths unionSet:displayIndexPaths];
+    if (parametersDisplay.leadingBufferScreenfuls == parametersFetchData.leadingBufferScreenfuls &&
-    [allIndexPaths unionSet:visibleIndexPaths];
+        parametersDisplay.trailingBufferScreenfuls == parametersFetchData.trailingBufferScreenfuls) {
+      displayIndexPaths = fetchDataIndexPaths;
     } else {
-    allIndexPaths = [visibleIndexPaths mutableCopy];
+      displayIndexPaths   = [_layoutController indexPathsForScrolling:_scrollDirection rangeType:ASLayoutRangeTypeDisplay];
     }
   
-  // Sets are magical.  Add anything we had applied interfaceState to in the last update, so we can clear any
+    // Typically the fetchDataIndexPaths will be the largest, and be a superset of the others, though it may be disjoint.
+    // Because allIndexPaths is an NSMutableOrderedSet, this adds the non-duplicate items /after/ the existing items.
+    // This means that during iteration, we will first visit visible, then display, then fetch data nodes.
+    [allIndexPaths unionSet:displayIndexPaths];
+    [allIndexPaths unionSet:fetchDataIndexPaths];
+  }
+  
+  // Add anything we had applied interfaceState to in the last update, but is no longer in range, so we can clear any
   // range flags it still has enabled.  Most of the time, all but a few elements are equal; a large programmatic
-  // scroll or major main thread stall could cause entirely disjoint sets, but we must visit all.
+  // scroll or major main thread stall could cause entirely disjoint sets.  In either case we must visit all.
-  NSSet *allCurrentIndexPaths = [allIndexPaths copy];
+  // Calling "-set" on NSMutableOrderedSet just references the underlying mutable data store, so we must copy it.
+  NSSet<NSIndexPath *> *allCurrentIndexPaths = [[allIndexPaths set] copy];
   [allIndexPaths unionSet:_allPreviousIndexPaths];
   _allPreviousIndexPaths = allCurrentIndexPaths;
   
+  // This array is only used if logging is enabled.
+  NSMutableArray<NSIndexPath *> *modifiedIndexPaths = (RangeControllerLoggingEnabled ? [NSMutableArray array] : nil);
+  
   for (NSIndexPath *indexPath in allIndexPaths) {
     // Before a node / indexPath is exposed to ASRangeController, ASDataController should have already measured it.
     // For consistency, make sure each node knows that it should measure itself if something changes.

AsyncDisplayKit/Details/_ASDisplayView.mm

@@ -331,4 +331,36 @@
   return _node;
 }
 
+#if TARGET_OS_TV
+#pragma mark - tvOS
+- (BOOL)canBecomeFocused
+{
+  return [_node canBecomeFocused];
+}
+
+- (void)didUpdateFocusInContext:(UIFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
+{
+  return [_node didUpdateFocusInContext:context withAnimationCoordinator:coordinator];
+}
+
+- (void)setNeedsFocusUpdate
+{
+  return [_node setNeedsFocusUpdate];
+}
+
+- (void)updateFocusIfNeeded
+{
+  return [_node updateFocusIfNeeded];
+}
+
+- (BOOL)shouldUpdateFocusInContext:(UIFocusUpdateContext *)context
+{
+  return [_node shouldUpdateFocusInContext:context];
+}
+
+- (UIView *)preferredFocusedView
+{
+  return [_node preferredFocusedView];
+}
+#endif
 @end

AsyncDisplayKit/Private/ASDisplayNode+UIViewBridge.mm

@@ -81,6 +81,46 @@
   return YES;
 }
 
+#if TARGET_OS_TV
+// Focus Engine
+- (BOOL)canBecomeFocused
+{
+  return YES;
+}
+
+- (void)setNeedsFocusUpdate
+{
+  ASDisplayNodeAssertMainThread();
+  [_view setNeedsFocusUpdate];
+}
+
+- (void)updateFocusIfNeeded
+{
+  ASDisplayNodeAssertMainThread();
+  [_view updateFocusIfNeeded];
+}
+
+- (BOOL)shouldUpdateFocusInContext:(UIFocusUpdateContext *)context
+{
+  return YES;
+}
+
+- (void)didUpdateFocusInContext:(UIFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
+{
+  
+}
+
+- (UIView *)preferredFocusedView
+{
+  if (self.nodeLoaded) {
+    return _view;
+  }
+  else {
+    return nil;
+  }
+}
+#endif
+
 - (BOOL)isFirstResponder
 {
   ASDisplayNodeAssertMainThread();
@@ -298,7 +338,7 @@
   _bridge_prologue;
   _setToViewOnly(userInteractionEnabled, enabled);
 }
-
+#if TARGET_OS_IOS
 - (BOOL)isExclusiveTouch
 {
   _bridge_prologue;
@@ -310,7 +350,7 @@
   _bridge_prologue;
   _setToViewOnly(exclusiveTouch, exclusiveTouch);
 }
-
+#endif
 - (BOOL)clipsToBounds
 {
   _bridge_prologue;

AsyncDisplayKit/Private/_ASPendingState.m

@@ -716,8 +716,10 @@ static UIColor *defaultTintColor = nil;
   if (_flags.setUserInteractionEnabled)
     view.userInteractionEnabled = userInteractionEnabled;
 
+  #if TARGET_OS_IOS
   if (_flags.setExclusiveTouch)
     view.exclusiveTouch = exclusiveTouch;
+  #endif
     
   if (_flags.setShadowColor)
     layer.shadowColor = shadowColor;
@@ -943,10 +945,10 @@ static UIColor *defaultTintColor = nil;
   
   pendingState.userInteractionEnabled = view.userInteractionEnabled;
   (pendingState->_flags).setUserInteractionEnabled = YES;
-  
+#if TARGET_OS_IOS
   pendingState.exclusiveTouch = view.exclusiveTouch;
   (pendingState->_flags).setExclusiveTouch = YES;
-  
+#endif
   pendingState.shadowColor = layer.shadowColor;
   (pendingState->_flags).setShadowColor = YES;
   

AsyncDisplayKit/TextKit/ASTextKitContext.h

@@ -30,6 +30,8 @@
                          constrainedSize:(CGSize)constrainedSize
                     layoutManagerFactory:(NSLayoutManager*(*)(void))layoutManagerFactory;
 
+@property (nonatomic, assign, readwrite) CGSize constrainedSize;
+
 /**
  All operations on TextKit values MUST occur within this locked context.  Simultaneous access (even non-mutative) to
  TextKit components may cause crashes.

AsyncDisplayKit/TextKit/ASTextKitContext.mm

@@ -49,6 +49,16 @@
   return self;
 }
 
+- (CGSize)constrainedSize
+{
+  return _textContainer.size;
+}
+
+- (void)setConstrainedSize:(CGSize)constrainedSize
+{
+  _textContainer.size = constrainedSize;
+}
+
 - (void)performBlockWithLockedTextKitComponents:(void (^)(NSLayoutManager *,
                                                           NSTextStorage *,
                                                           NSTextContainer *))block

AsyncDisplayKit/TextKit/ASTextKitRenderer.h

@@ -37,7 +37,6 @@
 
 /**
  Designated Initializer
-dvlkferufedgjnhjjfhldjedlunvtdtv
  @discussion Sizing will occur as a result of initialization, so be careful when/where you use this.
  */
 - (instancetype)initWithTextKitAttributes:(const ASTextKitAttributes &)textComponentAttributes
@@ -51,7 +50,7 @@ dvlkferufedgjnhjjfhldjedlunvtdtv
 
 @property (nonatomic, assign, readonly) ASTextKitAttributes attributes;
 
-@property (nonatomic, assign, readonly) CGSize constrainedSize;
+@property (nonatomic, assign, readwrite) CGSize constrainedSize;
 
 #pragma mark - Drawing
 /*

AsyncDisplayKit/TextKit/ASTextKitRenderer.mm

@@ -17,6 +17,9 @@
 #import "ASTextKitTailTruncater.h"
 #import "ASTextKitTruncating.h"
 
+//#define LOG(...) NSLog(__VA_ARGS__)
+#define LOG(...)
+
 static NSCharacterSet *_defaultAvoidTruncationCharacterSet()
 {
   static NSCharacterSet *truncationCharacterSet;
@@ -65,12 +68,10 @@ static NSCharacterSet *_defaultAvoidTruncationCharacterSet()
 {
   if (!_truncater) {
     ASTextKitAttributes attributes = _attributes;
-    // We must inset the constrained size by the size of the shadower.
+    NSCharacterSet *avoidTailTruncationSet = attributes.avoidTailTruncationSet ? : _defaultAvoidTruncationCharacterSet();
-    CGSize shadowConstrainedSize = [[self shadower] insetSizeWithConstrainedSize:_constrainedSize];
     _truncater = [[ASTextKitTailTruncater alloc] initWithContext:[self context]
                                       truncationAttributedString:attributes.truncationAttributedString
-                                          avoidTailTruncationSet:attributes.avoidTailTruncationSet ?: _defaultAvoidTruncationCharacterSet()
+                                          avoidTailTruncationSet:avoidTailTruncationSet];
-                                                 constrainedSize:shadowConstrainedSize];
   }
   return _truncater;
 }
@@ -79,6 +80,7 @@ static NSCharacterSet *_defaultAvoidTruncationCharacterSet()
 {
   if (!_context) {
     ASTextKitAttributes attributes = _attributes;
+    // We must inset the constrained size by the size of the shadower.
     CGSize shadowConstrainedSize = [[self shadower] insetSizeWithConstrainedSize:_constrainedSize];
     _context = [[ASTextKitContext alloc] initWithAttributedString:attributes.attributedString
                                                     lineBreakMode:attributes.lineBreakMode
@@ -92,6 +94,30 @@ static NSCharacterSet *_defaultAvoidTruncationCharacterSet()
 
 #pragma mark - Sizing
 
+- (CGSize)size
+{
+  if (!_sizeIsCalculated) {
+    [self _calculateSize];
+    _sizeIsCalculated = YES;
+  }
+  return _calculatedSize;
+}
+
+- (void)setConstrainedSize:(CGSize)constrainedSize
+{
+  if (!CGSizeEqualToSize(constrainedSize, _constrainedSize)) {
+    _sizeIsCalculated = NO;
+    _constrainedSize = constrainedSize;
+    // If the context isn't created yet, it will be initialized with the appropriate size when next accessed.
+    if (_context) {
+      // If we're updating an existing context, make sure to use the same inset logic used during initialization.
+      // This codepath allows us to reuse the
+      CGSize shadowConstrainedSize = [[self shadower] insetSizeWithConstrainedSize:constrainedSize];
+      _context.constrainedSize = shadowConstrainedSize;
+    }
+  }
+}
+
 - (void)_calculateSize
 {
   // Force glyph generation and layout, which may not have happened yet (and isn't triggered by
@@ -111,16 +137,7 @@ static NSCharacterSet *_defaultAvoidTruncationCharacterSet()
   // to make sure our width calculations aren't being offset by glyphs going beyond the constrained rect.
   boundingRect = CGRectIntersection(boundingRect, {.size = constrainedRect.size});
 
-  _calculatedSize = [_shadower outsetSizeWithInsetSize:CGSizeMake(boundingRect.size.width + boundingRect.origin.x, boundingRect.size.height + boundingRect.origin.y)];
+  _calculatedSize = [_shadower outsetSizeWithInsetSize:boundingRect.size];
-}
-
-- (CGSize)size
-{
-  if (!_sizeIsCalculated) {
-    [self _calculateSize];
-    _sizeIsCalculated = YES;
-  }
-  return _calculatedSize;
 }
 
 #pragma mark - Drawing
@@ -136,8 +153,12 @@ static NSCharacterSet *_defaultAvoidTruncationCharacterSet()
   [[self shadower] setShadowInContext:context];
   UIGraphicsPushContext(context);
 
+  LOG(@"%@, shadowInsetBounds = %@",self, NSStringFromCGRect(shadowInsetBounds));
+  
   [[self context] performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) {
+    LOG(@"usedRect: %@", NSStringFromCGRect([layoutManager usedRectForTextContainer:textContainer]));
     NSRange glyphRange = [layoutManager glyphRangeForTextContainer:textContainer];
+    LOG(@"boundingRect: %@", NSStringFromCGRect([layoutManager boundingRectForGlyphRange:glyphRange inTextContainer:textContainer]));
     [layoutManager drawBackgroundForGlyphRange:glyphRange atPoint:shadowInsetBounds.origin];
     [layoutManager drawGlyphsForGlyphRange:glyphRange atPoint:shadowInsetBounds.origin];
   }];

AsyncDisplayKit/TextKit/ASTextKitTailTruncater.mm

@@ -18,7 +18,6 @@
   __weak ASTextKitContext *_context;
   NSAttributedString *_truncationAttributedString;
   NSCharacterSet *_avoidTailTruncationSet;
-  CGSize _constrainedSize;
 }
 @synthesize visibleRanges = _visibleRanges;
 @synthesize truncationStringRect = _truncationStringRect;
@@ -26,13 +25,11 @@
 - (instancetype)initWithContext:(ASTextKitContext *)context
      truncationAttributedString:(NSAttributedString *)truncationAttributedString
          avoidTailTruncationSet:(NSCharacterSet *)avoidTailTruncationSet
-                constrainedSize:(CGSize)constrainedSize
 {
   if (self = [super init]) {
     _context = context;
     _truncationAttributedString = truncationAttributedString;
     _avoidTailTruncationSet = avoidTailTruncationSet;
-    _constrainedSize = constrainedSize;
 
     [self _truncate];
   }

AsyncDisplayKit/TextKit/ASTextKitTruncating.h

@@ -31,7 +31,6 @@
  */
 - (instancetype)initWithContext:(ASTextKitContext *)context
      truncationAttributedString:(NSAttributedString *)truncationAttributedString
-         avoidTailTruncationSet:(NSCharacterSet *)avoidTailTruncationSet
+         avoidTailTruncationSet:(NSCharacterSet *)avoidTailTruncationSet;
-                constrainedSize:(CGSize)constrainedSize;
 
 @end

AsyncDisplayKitTests/ASTextKitTruncationTests.mm

@@ -50,8 +50,7 @@
   }];
   ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context
                                                                truncationAttributedString:nil
-                                                                   avoidTailTruncationSet:nil
+                                                                   avoidTailTruncationSet:nil];
-                                                                          constrainedSize:constrainedSize];
   XCTAssert(NSEqualRanges(textKitVisibleRange, tailTruncater.visibleRanges[0]));
 }
 
@@ -67,8 +66,7 @@
                                                             layoutManagerFactory:nil];
   ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context
                                                                truncationAttributedString:[self _simpleTruncationAttributedString]
-                                                                   avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@""]
+                                                                   avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@""]];
-                                                                          constrainedSize:constrainedSize];
   __block NSString *drawnString;
   [context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) {
     drawnString = textStorage.string;
@@ -90,8 +88,7 @@
                                                             layoutManagerFactory:nil];
   ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context
                                                                truncationAttributedString:[self _simpleTruncationAttributedString]
-                                                                   avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."]
+                                                                   avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."]];
-                                                                          constrainedSize:constrainedSize];
   (void)tailTruncater;
   __block NSString *drawnString;
   [context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) {
@@ -114,8 +111,7 @@
                                                             layoutManagerFactory:nil];
   ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context
                                                                truncationAttributedString:[self _simpleTruncationAttributedString]
-                                                                   avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."]
+                                                                   avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."]];
-                                                                          constrainedSize:constrainedSize];
   // So Xcode doesn't yell at me for an unused var...
   (void)tailTruncater;
   __block NSString *drawnString;
@@ -139,8 +135,7 @@
                                                             layoutManagerFactory:nil];
   XCTAssertNoThrow([[ASTextKitTailTruncater alloc] initWithContext:context
                                         truncationAttributedString:[self _simpleTruncationAttributedString]
-                                            avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."]
+                                            avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."]]);
-                                                   constrainedSize:constrainedSize]);
 }
 
 @end

examples/CatDealsCollectionView/Podfile

@@ -0,0 +1,3 @@
+source 'https://github.com/CocoaPods/Specs.git'
+platform :ios, '8.0'
+pod 'AsyncDisplayKit', :path => '../..'

examples/CatDealsCollectionView/Sample.xcodeproj/project.pbxproj

@@ -0,0 +1,405 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 46;
+	objects = {
+
+/* Begin PBXBuildFile section */
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+		7A8384971C344057002CDD08 /* ItemStyles.m in Sources */ = {isa = PBXBuildFile; fileRef = 7A8384961C344057002CDD08 /* ItemStyles.m */; };
+		7ACD5F891C415B7500E7BE16 /* LoadingNode.m in Sources */ = {isa = PBXBuildFile; fileRef = 7ACD5F881C415B7500E7BE16 /* LoadingNode.m */; };
+		7ACD5F961C4847C000E7BE16 /* PlaceholderNetworkImageNode.m in Sources */ = {isa = PBXBuildFile; fileRef = 7ACD5F951C4847C000E7BE16 /* PlaceholderNetworkImageNode.m */; };
+		9BA2CEA11BB2579C00D18414 /* Launchboard.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 9BA2CEA01BB2579C00D18414 /* Launchboard.storyboard */; };
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+		AC3C4A671A11F47200143C57 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = AC3C4A661A11F47200143C57 /* AppDelegate.m */; };
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+/* End PBXBuildFile section */
+
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+		7A8384911C343680002CDD08 /* BlurbNode.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = BlurbNode.h; sourceTree = "<group>"; };
+		7A8384921C343680002CDD08 /* BlurbNode.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = BlurbNode.m; sourceTree = "<group>"; };
+		7A8384951C344057002CDD08 /* ItemStyles.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ItemStyles.h; sourceTree = "<group>"; };
+		7A8384961C344057002CDD08 /* ItemStyles.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ItemStyles.m; sourceTree = "<group>"; };
+		7ACD5F871C415B7500E7BE16 /* LoadingNode.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = LoadingNode.h; sourceTree = "<group>"; };
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+		AC3C4A621A11F47200143C57 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
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+		AC3C4A651A11F47200143C57 /* AppDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
+		AC3C4A661A11F47200143C57 /* AppDelegate.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
+		AC3C4A681A11F47200143C57 /* ViewController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = ViewController.h; sourceTree = "<group>"; };
+		AC3C4A691A11F47200143C57 /* ViewController.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = ViewController.m; sourceTree = "<group>"; };
+		AC3C4A8D1A11F80C00143C57 /* Images.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Images.xcassets; sourceTree = "<group>"; };
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+		FC3FCA7F1C2B1564009F6D6D /* PresentingViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PresentingViewController.m; sourceTree = "<group>"; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		AC3C4A5B1A11F47200143C57 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				FABD6D156A3EB118497E5CE6 /* libPods.a in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		90A2B9C5397C46134C8A793B /* Pods */ = {
+			isa = PBXGroup;
+			children = (
+				2DBAEE96397BB913350C4530 /* Pods.debug.xcconfig */,
+				CD1ABB23007FEDB31D8C1978 /* Pods.release.xcconfig */,
+			);
+			name = Pods;
+			sourceTree = "<group>";
+		};
+		AC3C4A551A11F47200143C57 = {
+			isa = PBXGroup;
+			children = (
+				AC3C4A601A11F47200143C57 /* Sample */,
+				AC3C4A5F1A11F47200143C57 /* Products */,
+				90A2B9C5397C46134C8A793B /* Pods */,
+				D6E38FF0CB18E3F55CF06437 /* Frameworks */,
+			);
+			sourceTree = "<group>";
+		};
+		AC3C4A5F1A11F47200143C57 /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				AC3C4A5E1A11F47200143C57 /* Sample.app */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		AC3C4A601A11F47200143C57 /* Sample */ = {
+			isa = PBXGroup;
+			children = (
+				AC3C4A651A11F47200143C57 /* AppDelegate.h */,
+				AC3C4A661A11F47200143C57 /* AppDelegate.m */,
+				AC3C4A681A11F47200143C57 /* ViewController.h */,
+				AC3C4A691A11F47200143C57 /* ViewController.m */,
+				7ACD5F941C4847C000E7BE16 /* PlaceholderNetworkImageNode.h */,
+				7ACD5F951C4847C000E7BE16 /* PlaceholderNetworkImageNode.m */,
+				FC3FCA7E1C2B1564009F6D6D /* PresentingViewController.h */,
+				FC3FCA7F1C2B1564009F6D6D /* PresentingViewController.m */,
+				AC3C4A8D1A11F80C00143C57 /* Images.xcassets */,
+				AC3C4A611A11F47200143C57 /* Supporting Files */,
+				25FDEC901BF31EE700CEB123 /* ItemNode.h */,
+				25FDEC911BF31EE700CEB123 /* ItemNode.m */,
+				7A8384951C344057002CDD08 /* ItemStyles.h */,
+				7A8384961C344057002CDD08 /* ItemStyles.m */,
+				7A83848C1C34359D002CDD08 /* ItemViewModel.h */,
+				7A83848D1C34359D002CDD08 /* ItemViewModel.m */,
+				7A8384911C343680002CDD08 /* BlurbNode.h */,
+				7A8384921C343680002CDD08 /* BlurbNode.m */,
+				7ACD5F871C415B7500E7BE16 /* LoadingNode.h */,
+				7ACD5F881C415B7500E7BE16 /* LoadingNode.m */,
+			);
+			indentWidth = 2;
+			path = Sample;
+			sourceTree = "<group>";
+			tabWidth = 2;
+			usesTabs = 0;
+		};
+		AC3C4A611A11F47200143C57 /* Supporting Files */ = {
+			isa = PBXGroup;
+			children = (
+				AC3C4A621A11F47200143C57 /* Info.plist */,
+				AC3C4A631A11F47200143C57 /* main.m */,
+				9BA2CEA01BB2579C00D18414 /* Launchboard.storyboard */,
+			);
+			name = "Supporting Files";
+			sourceTree = "<group>";
+		};
+		D6E38FF0CB18E3F55CF06437 /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				F02BAF78E68BC56FD8C161B7 /* libPods.a */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXNativeTarget section */
+		AC3C4A5D1A11F47200143C57 /* Sample */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = AC3C4A811A11F47200143C57 /* Build configuration list for PBXNativeTarget "Sample" */;
+			buildPhases = (
+				F868CFBB21824CC9521B6588 /* Check Pods Manifest.lock */,
+				AC3C4A5A1A11F47200143C57 /* Sources */,
+				AC3C4A5B1A11F47200143C57 /* Frameworks */,
+				AC3C4A5C1A11F47200143C57 /* Resources */,
+				A6902C454C7661D0D277AC62 /* Copy Pods Resources */,
+				B4CD33E927E6F4EE5DD6CCF0 /* Embed Pods Frameworks */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = Sample;
+			productName = Sample;
+			productReference = AC3C4A5E1A11F47200143C57 /* Sample.app */;
+			productType = "com.apple.product-type.application";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		AC3C4A561A11F47200143C57 /* Project object */ = {
+			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 0610;
+				ORGANIZATIONNAME = Facebook;
+				TargetAttributes = {
+					AC3C4A5D1A11F47200143C57 = {
+						CreatedOnToolsVersion = 6.1;
+					};
+				};
+			};
+			buildConfigurationList = AC3C4A591A11F47200143C57 /* Build configuration list for PBXProject "Sample" */;
+			compatibilityVersion = "Xcode 3.2";
+			developmentRegion = English;
+			hasScannedForEncodings = 0;
+			knownRegions = (
+				en,
+				Base,
+			);
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+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
+				AC3C4A5D1A11F47200143C57 /* Sample */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXResourcesBuildPhase section */
+		AC3C4A5C1A11F47200143C57 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
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+				AC3C4A8E1A11F80C00143C57 /* Images.xcassets in Resources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXResourcesBuildPhase section */
+
+/* Begin PBXShellScriptBuildPhase section */
+		A6902C454C7661D0D277AC62 /* Copy Pods Resources */ = {
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+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "Copy Pods Resources";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods/Pods-resources.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
+		B4CD33E927E6F4EE5DD6CCF0 /* Embed Pods Frameworks */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "Embed Pods Frameworks";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods/Pods-frameworks.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
+		F868CFBB21824CC9521B6588 /* Check Pods Manifest.lock */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
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+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			showEnvVarsInLog = 0;
+		};
+/* End PBXShellScriptBuildPhase section */
+
+/* Begin PBXSourcesBuildPhase section */
+		AC3C4A5A1A11F47200143C57 /* Sources */ = {
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+			buildActionMask = 2147483647;
+			files = (
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+				7A8384971C344057002CDD08 /* ItemStyles.m in Sources */,
+				FC3FCA801C2B1564009F6D6D /* PresentingViewController.m in Sources */,
+				7A8384941C343680002CDD08 /* BlurbNode.m in Sources */,
+				7A83848E1C34359D002CDD08 /* ItemViewModel.m in Sources */,
+				AC3C4A671A11F47200143C57 /* AppDelegate.m in Sources */,
+				7ACD5F961C4847C000E7BE16 /* PlaceholderNetworkImageNode.m in Sources */,
+				AC3C4A641A11F47200143C57 /* main.m in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin XCBuildConfiguration section */
+		AC3C4A7F1A11F47200143C57 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				COPY_PHASE_STRIP = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				GCC_SYMBOLS_PRIVATE_EXTERN = NO;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.1;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				SDKROOT = iphoneos;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
+		AC3C4A801A11F47200143C57 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				COPY_PHASE_STRIP = YES;
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.1;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = iphoneos;
+				TARGETED_DEVICE_FAMILY = "1,2";
+				VALIDATE_PRODUCT = YES;
+			};
+			name = Release;
+		};
+		AC3C4A821A11F47200143C57 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 2DBAEE96397BB913350C4530 /* Pods.debug.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME = LaunchImage;
+				INFOPLIST_FILE = Sample/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.1;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
+		AC3C4A831A11F47200143C57 /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = CD1ABB23007FEDB31D8C1978 /* Pods.release.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME = LaunchImage;
+				INFOPLIST_FILE = Sample/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.1;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		AC3C4A591A11F47200143C57 /* Build configuration list for PBXProject "Sample" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				AC3C4A7F1A11F47200143C57 /* Debug */,
+				AC3C4A801A11F47200143C57 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		AC3C4A811A11F47200143C57 /* Build configuration list for PBXNativeTarget "Sample" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				AC3C4A821A11F47200143C57 /* Debug */,
+				AC3C4A831A11F47200143C57 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = AC3C4A561A11F47200143C57 /* Project object */;
+}

examples/CatDealsCollectionView/Sample.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:Sample.xcodeproj">
+   </FileRef>
+</Workspace>

examples/CatDealsCollectionView/Sample.xcodeproj/xcshareddata/xcschemes/Sample.xcscheme

@@ -0,0 +1,88 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0620"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "AC3C4A5D1A11F47200143C57"
+               BuildableName = "Sample.app"
+               BlueprintName = "Sample"
+               ReferencedContainer = "container:Sample.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      buildConfiguration = "Debug">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "AC3C4A5D1A11F47200143C57"
+            BuildableName = "Sample.app"
+            BlueprintName = "Sample"
+            ReferencedContainer = "container:Sample.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </TestAction>
+   <LaunchAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Debug"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "AC3C4A5D1A11F47200143C57"
+            BuildableName = "Sample.app"
+            BlueprintName = "Sample"
+            ReferencedContainer = "container:Sample.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Release"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "AC3C4A5D1A11F47200143C57"
+            BuildableName = "Sample.app"
+            BlueprintName = "Sample"
+            ReferencedContainer = "container:Sample.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

examples/CatDealsCollectionView/Sample.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Sample.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

examples/CatDealsCollectionView/Sample/AppDelegate.h

@@ -0,0 +1,20 @@
+/* This file provided by Facebook is for non-commercial testing and evaluation
+ * purposes only.  Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#import <UIKit/UIKit.h>
+
+#define SIMULATE_WEB_RESPONSE 0
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+
+@property (strong, nonatomic) UIWindow *window;
+
+@end

examples/CatDealsCollectionView/Sample/AppDelegate.m

@@ -0,0 +1,51 @@
+/* This file provided by Facebook is for non-commercial testing and evaluation
+ * purposes only.  Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#import "AppDelegate.h"
+
+#import "PresentingViewController.h"
+#import "ViewController.h"
+
+@implementation AppDelegate
+
+- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
+{  
+  self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
+  self.window.backgroundColor = [UIColor whiteColor];
+  self.window.rootViewController = [[UINavigationController alloc] init];
+  
+  [self pushNewViewControllerAnimated:NO];
+  
+  [self.window makeKeyAndVisible];
+  
+  return YES;
+}
+
+- (void)pushNewViewControllerAnimated:(BOOL)animated
+{
+  UINavigationController *navController = (UINavigationController *)self.window.rootViewController;
+
+#if SIMULATE_WEB_RESPONSE
+  UIViewController *viewController = [[PresentingViewController alloc] init];
+#else
+  UIViewController *viewController = [[ViewController alloc] init];
+  viewController.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Push Another Copy" style:UIBarButtonItemStylePlain target:self action:@selector(pushNewViewController)];
+#endif
+  
+  [navController pushViewController:viewController animated:animated];
+}
+
+- (void)pushNewViewController
+{
+  [self pushNewViewControllerAnimated:YES];
+}
+
+@end

examples/CatDealsCollectionView/Sample/BlurbNode.h

@@ -0,0 +1,21 @@
+/* This file provided by Facebook is for non-commercial testing and evaluation
+ * purposes only.  Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#import <AsyncDisplayKit/AsyncDisplayKit.h>
+
+/**
+ * Simple node that displays a placekitten.com attribution.
+ */
+@interface BlurbNode : ASCellNode
+
++ (CGFloat)desiredHeightForWidth:(CGFloat)width;
+
+@end

examples/CatDealsCollectionView/Sample/BlurbNode.m

@@ -0,0 +1,112 @@
+/* This file provided by Facebook is for non-commercial testing and evaluation
+ * purposes only.  Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#import "BlurbNode.h"
+
+#import <AsyncDisplayKit/ASDisplayNode+Subclasses.h>
+#import <AsyncDisplayKit/ASHighlightOverlayLayer.h>
+
+#import <AsyncDisplayKit/ASInsetLayoutSpec.h>
+#import <AsyncDisplayKit/ASCenterLayoutSpec.h>
+
+static CGFloat kFixedHeight = 75.0f;
+static CGFloat kTextPadding = 10.0f;
+
+@interface BlurbNode () <ASTextNodeDelegate>
+{
+  ASTextNode *_textNode;
+}
+
+@end
+
+
+@implementation BlurbNode
+
+#pragma mark -
+#pragma mark ASCellNode.
+
++ (CGFloat)desiredHeightForWidth:(CGFloat)width {
+  return kFixedHeight;
+}
+
+- (instancetype)init
+{
+  if (!(self = [super init]))
+    return nil;
+
+  self.backgroundColor = [UIColor lightGrayColor];
+  // create a text node
+  _textNode = [[ASTextNode alloc] init];
+  _textNode.maximumNumberOfLines = 2;
+
+  // configure the node to support tappable links
+  _textNode.delegate = self;
+  _textNode.userInteractionEnabled = YES;
+
+  // generate an attributed string using the custom link attribute specified above
+  NSString *blurb = @"Kittens courtesy lorempixel.com \U0001F638 \nTitles courtesy of catipsum.com";
+  NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:blurb];
+  [string addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"HelveticaNeue-Light" size:16.0f] range:NSMakeRange(0, blurb.length)];
+  [string addAttributes:@{
+                          NSLinkAttributeName: [NSURL URLWithString:@"http://lorempixel.com/"],
+                          NSForegroundColorAttributeName: [UIColor blueColor],
+                          NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle | NSUnderlinePatternDot),
+                          }
+                  range:[blurb rangeOfString:@"lorempixel.com"]];
+  [string addAttributes:@{
+                          NSLinkAttributeName: [NSURL URLWithString:@"http://www.catipsum.com/"],
+                          NSForegroundColorAttributeName: [UIColor blueColor],
+                          NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle | NSUnderlinePatternDot),
+                          } range:[blurb rangeOfString:@"catipsum.com"]];
+  _textNode.attributedString = string;
+
+  // add it as a subnode, and we're done
+  [self addSubnode:_textNode];
+
+  return self;
+}
+
+- (void)didLoad
+{
+  // enable highlighting now that self.layer has loaded -- see ASHighlightOverlayLayer.h
+  self.layer.as_allowsHighlightDrawing = YES;
+
+  [super didLoad];
+}
+
+- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
+{
+  ASCenterLayoutSpec *centerSpec = [[ASCenterLayoutSpec alloc] init];
+  centerSpec.centeringOptions = ASCenterLayoutSpecCenteringX;
+  centerSpec.sizingOptions = ASCenterLayoutSpecSizingOptionMinimumY;
+  centerSpec.child = _textNode;
+  
+  UIEdgeInsets padding =UIEdgeInsetsMake(kTextPadding, kTextPadding, kTextPadding, kTextPadding);
+  return [ASInsetLayoutSpec insetLayoutSpecWithInsets:padding child:centerSpec];
+}
+
+
+#pragma mark -
+#pragma mark ASTextNodeDelegate methods.
+
+- (BOOL)textNode:(ASTextNode *)richTextNode shouldHighlightLinkAttribute:(NSString *)attribute value:(id)value atPoint:(CGPoint)point
+{
+  // opt into link highlighting -- tap and hold the link to try it!  must enable highlighting on a layer, see -didLoad
+  return YES;
+}
+
+- (void)textNode:(ASTextNode *)richTextNode tappedLinkAttribute:(NSString *)attribute value:(NSURL *)URL atPoint:(CGPoint)point textRange:(NSRange)textRange
+{
+  // the node tapped a link, open it
+  [[UIApplication sharedApplication] openURL:URL];
+}
+
+@end

examples/CatDealsCollectionView/Sample/Images.xcassets/LaunchImage.launchimage/Contents.json

@@ -0,0 +1,39 @@
+{
+  "images" : [
+    {
+      "orientation" : "portrait",
+      "idiom" : "iphone",
+      "filename" : "Default-568h@2x.png",
+      "minimum-system-version" : "7.0",
+      "subtype" : "retina4",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "1x",
+      "orientation" : "portrait"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "orientation" : "portrait"
+    },
+    {
+      "orientation" : "portrait",
+      "idiom" : "iphone",
+      "filename" : "Default-568h@2x.png",
+      "subtype" : "retina4",
+      "scale" : "2x"
+    },
+    {
+      "orientation" : "portrait",
+      "idiom" : "iphone",
+      "minimum-system-version" : "7.0",
+      "scale" : "2x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

examples/CatDealsCollectionView/Sample/Images.xcassets/cat_face.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "cat_face.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

examples/CatDealsCollectionView/Sample/Info.plist

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSAppTransportSecurity</key>
+	<dict>
+		<key>NSAllowsArbitraryLoads</key>
+		<true/>
+		<key>NSExceptionDomains</key>
+		<dict>
+			<key>http://lorempixel.com</key>
+			<string></string>
+		</dict>
+	</dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIcons</key>
+	<dict/>
+	<key>CFBundleIcons~ipad</key>
+	<dict/>
+	<key>CFBundleIdentifier</key>
+	<string>com.facebook.AsyncDisplayKit.$(PRODUCT_NAME:rfc1034identifier)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>Launchboard</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>

examples/CatDealsCollectionView/Sample/ItemNode.h

@@ -0,0 +1,21 @@
+/* This file provided by Facebook is for non-commercial testing and evaluation
+ * purposes only.  Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#import <AsyncDisplayKit/AsyncDisplayKit.h>
+#import "ItemViewModel.h"
+
+@interface ItemNode : ASCellNode
+
+- initWithViewModel:(ItemViewModel *)viewModel;
++ (CGSize)sizeForWidth:(CGFloat)width;
++ (CGSize)preferredViewSize;
+
+@end

examples/CatDealsCollectionView/Sample/ItemNode.m

@@ -0,0 +1,361 @@
+/* This file provided by Facebook is for non-commercial testing and evaluation
+ * purposes only.  Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#import "ItemNode.h"
+#import "ItemStyles.h"
+#import "PlaceholderNetworkImageNode.h"
+
+const CGFloat kFixedLabelsAreaHeight = 96.0;
+const CGFloat kDesignWidth = 320.0;
+const CGFloat kDesignHeight = 299.0;
+const CGFloat kBadgeHeight = 34.0;
+const CGFloat kSoldOutGBHeight = 50.0;
+
+@interface ItemNode() <ASNetworkImageNodeDelegate>
+
+@property (nonatomic, strong) ItemViewModel *viewModel;
+
+@property (nonatomic, strong) PlaceholderNetworkImageNode *dealImageView;
+
+@property (nonatomic, strong) ASTextNode *titleLabel;
+@property (nonatomic, strong) ASTextNode *firstInfoLabel;
+@property (nonatomic, strong) ASTextNode *distanceLabel;
+@property (nonatomic, strong) ASTextNode *secondInfoLabel;
+@property (nonatomic, strong) ASTextNode *originalPriceLabel;
+@property (nonatomic, strong) ASTextNode *finalPriceLabel;
+@property (nonatomic, strong) ASTextNode *soldOutLabelFlat;
+@property (nonatomic, strong) ASDisplayNode *soldOutLabelBackground;
+@property (nonatomic, strong) ASDisplayNode *soldOutOverlay;
+@property (nonatomic, strong) ASTextNode *badge;
+
+@end
+
+@implementation ItemNode
+
+- (instancetype)initWithViewModel:(ItemViewModel *)viewModel
+{
+  self = [super init];
+  if (self != nil) {
+    _viewModel = viewModel;
+    [self setup];
+    [self updateLabels];
+    [self updateBackgroundColor];
+    
+  }
+  return self;
+}
+
++ (BOOL)isRTL {
+  return [UIApplication sharedApplication].userInterfaceLayoutDirection == UIUserInterfaceLayoutDirectionRightToLeft;
+}
+
+- (void)setup {
+  self.dealImageView = [[PlaceholderNetworkImageNode alloc] init];
+  self.dealImageView.delegate = self;
+  self.dealImageView.placeholderEnabled = YES;
+  self.dealImageView.placeholderImageOverride = [ItemStyles placeholderImage];
+  self.dealImageView.defaultImage = [ItemStyles placeholderImage];
+  self.dealImageView.contentMode = UIViewContentModeScaleToFill;
+  self.dealImageView.placeholderFadeDuration = 0.0;
+  self.dealImageView.layerBacked = YES;
+  
+  self.titleLabel = [[ASTextNode alloc] init];
+  self.titleLabel.maximumNumberOfLines = 2;
+  self.titleLabel.alignSelf = ASStackLayoutAlignSelfStart;
+  self.titleLabel.flexGrow = YES;
+  self.titleLabel.layerBacked = YES;
+  
+  self.firstInfoLabel = [[ASTextNode alloc] init];
+  self.firstInfoLabel.maximumNumberOfLines = 1;
+  self.firstInfoLabel.layerBacked = YES;
+  
+  self.secondInfoLabel = [[ASTextNode alloc] init];
+  self.secondInfoLabel.maximumNumberOfLines = 1;
+  self.secondInfoLabel.layerBacked = YES;
+  
+  self.distanceLabel = [[ASTextNode alloc] init];
+  self.distanceLabel.maximumNumberOfLines = 1;
+  self.distanceLabel.layerBacked = YES;
+  
+  self.originalPriceLabel = [[ASTextNode alloc] init];
+  self.originalPriceLabel.maximumNumberOfLines = 1;
+  self.originalPriceLabel.layerBacked = YES;
+  
+  self.finalPriceLabel = [[ASTextNode alloc] init];
+  self.finalPriceLabel.maximumNumberOfLines = 1;
+  self.finalPriceLabel.layerBacked = YES;
+  
+  self.badge = [[ASTextNode alloc] init];
+  self.badge.hidden = YES;
+  self.badge.layerBacked = YES;
+  
+  self.soldOutLabelFlat = [[ASTextNode alloc] init];
+  self.soldOutLabelFlat.layerBacked = YES;
+
+  self.soldOutLabelBackground = [[ASDisplayNode alloc] init];
+  self.soldOutLabelBackground.sizeRange = ASRelativeSizeRangeMake(ASRelativeSizeMake(ASRelativeDimensionMakeWithPercent(1), ASRelativeDimensionMakeWithPoints(kSoldOutGBHeight)), ASRelativeSizeMake(ASRelativeDimensionMakeWithPercent(1), ASRelativeDimensionMakeWithPoints(kSoldOutGBHeight)));
+  self.soldOutLabelBackground.backgroundColor = [[UIColor whiteColor] colorWithAlphaComponent:0.9];
+  self.soldOutLabelBackground.flexGrow = YES;
+  self.soldOutLabelBackground.layerBacked = YES;
+  
+  self.soldOutOverlay = [[ASDisplayNode alloc] init];
+  self.soldOutOverlay.flexGrow = YES;
+  self.soldOutOverlay.backgroundColor = [[UIColor whiteColor] colorWithAlphaComponent:0.5];
+  self.soldOutOverlay.layerBacked = YES;
+  
+  [self addSubnode:self.dealImageView];
+  [self addSubnode:self.titleLabel];
+  [self addSubnode:self.firstInfoLabel];
+  [self addSubnode:self.secondInfoLabel];
+  [self addSubnode:self.originalPriceLabel];
+  [self addSubnode:self.finalPriceLabel];
+  [self addSubnode:self.distanceLabel];
+  [self addSubnode:self.badge];
+  
+  [self addSubnode:self.soldOutLabelBackground];
+  [self addSubnode:self.soldOutLabelFlat];
+  [self addSubnode:self.soldOutOverlay];
+  self.soldOutOverlay.hidden = YES;
+  self.soldOutLabelBackground.hidden = YES;
+  self.soldOutLabelFlat.hidden = YES;
+  
+  [self addSubnode:self.soldOutOverlay];
+  
+  if ([ItemNode isRTL]) {
+    self.titleLabel.alignSelf = ASStackLayoutAlignSelfEnd;
+    self.firstInfoLabel.alignSelf = ASStackLayoutAlignSelfEnd;
+    self.distanceLabel.alignSelf = ASStackLayoutAlignSelfEnd;
+    self.secondInfoLabel.alignSelf = ASStackLayoutAlignSelfEnd;
+    self.originalPriceLabel.alignSelf = ASStackLayoutAlignSelfStart;
+    self.finalPriceLabel.alignSelf = ASStackLayoutAlignSelfStart;
+  } else {
+    self.firstInfoLabel.alignSelf = ASStackLayoutAlignSelfStart;
+    self.distanceLabel.alignSelf = ASStackLayoutAlignSelfStart;
+    self.secondInfoLabel.alignSelf = ASStackLayoutAlignSelfStart;
+    self.originalPriceLabel.alignSelf = ASStackLayoutAlignSelfEnd;
+    self.finalPriceLabel.alignSelf = ASStackLayoutAlignSelfEnd;
+  }
+}
+
+- (void)updateLabels {
+  // Set Title text
+  if (self.viewModel.titleText) {
+    self.titleLabel.attributedString = [[NSAttributedString alloc] initWithString:self.viewModel.titleText attributes:[ItemStyles titleStyle]];
+  }
+  if (self.viewModel.firstInfoText) {
+    self.firstInfoLabel.attributedString = [[NSAttributedString alloc] initWithString:self.viewModel.firstInfoText attributes:[ItemStyles subtitleStyle]];
+  }
+  
+  if (self.viewModel.secondInfoText) {
+    self.secondInfoLabel.attributedString = [[NSAttributedString alloc] initWithString:self.viewModel.secondInfoText attributes:[ItemStyles secondInfoStyle]];
+  }
+  if (self.viewModel.originalPriceText) {
+    self.originalPriceLabel.attributedString = [[NSAttributedString alloc] initWithString:self.viewModel.originalPriceText attributes:[ItemStyles originalPriceStyle]];
+  }
+  if (self.viewModel.finalPriceText) {
+        self.finalPriceLabel.attributedString = [[NSAttributedString alloc] initWithString:self.viewModel.finalPriceText attributes:[ItemStyles finalPriceStyle]];
+  }
+  if (self.viewModel.distanceLabelText) {
+    NSString *format = [ItemNode isRTL] ? @"%@ •" : @"• %@";
+    NSString *distanceText = [NSString stringWithFormat:format, self.viewModel.distanceLabelText];
+    
+    self.distanceLabel.attributedString = [[NSAttributedString alloc] initWithString:distanceText attributes:[ItemStyles distanceStyle]];
+  }
+  
+  BOOL isSoldOut = self.viewModel.soldOutText != nil;
+  
+  if (isSoldOut) {
+    NSString *soldOutText = self.viewModel.soldOutText;
+    self.soldOutLabelFlat.attributedString = [[NSAttributedString alloc] initWithString:soldOutText attributes:[ItemStyles soldOutStyle]];
+  }
+  self.soldOutOverlay.hidden = !isSoldOut;
+  self.soldOutLabelFlat.hidden = !isSoldOut;
+  self.soldOutLabelBackground.hidden = !isSoldOut;
+  
+  BOOL hasBadge = self.viewModel.badgeText != nil;
+  if (hasBadge) {
+    self.badge.attributedString = [[NSAttributedString alloc] initWithString:self.viewModel.badgeText attributes:[ItemStyles badgeStyle]];
+    self.badge.backgroundColor = [ItemStyles badgeColor];
+  }
+  self.badge.hidden = !hasBadge;
+}
+
+- (void)updateBackgroundColor
+{
+  if (self.highlighted) {
+    self.backgroundColor = [[UIColor grayColor] colorWithAlphaComponent:0.3];
+  } else if (self.selected) {
+    self.backgroundColor = [UIColor lightGrayColor];
+  } else {
+    self.backgroundColor = [UIColor whiteColor];
+  }
+}
+
+- (void)imageNode:(ASNetworkImageNode *)imageNode didLoadImage:(UIImage *)image {
+}
+
+- (void)setSelected:(BOOL)selected
+{
+  [super setSelected:selected];
+  [self updateBackgroundColor];
+}
+
+- (void)setHighlighted:(BOOL)highlighted
+{
+  [super setHighlighted:highlighted];
+  [self updateBackgroundColor];
+}
+
+#pragma mark - superclass
+
+- (void)displayWillStart {
+  [super displayWillStart];
+  [self fetchData];
+}
+
+- (void)fetchData {
+  [super fetchData];
+  if (self.viewModel) {
+    [self loadImage];
+  }
+}
+
+
+- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize {
+
+  ASLayoutSpec *textSpec = [self textSpec];
+  ASLayoutSpec *imageSpec = [self imageSpecWithSize:constrainedSize];
+  ASOverlayLayoutSpec *soldOutOverImage = [ASOverlayLayoutSpec overlayLayoutSpecWithChild:imageSpec overlay:[self soldOutLabelSpec]];
+  
+  NSArray *stackChildren = @[soldOutOverImage, textSpec];
+  
+  ASStackLayoutSpec *mainStack = [ASStackLayoutSpec stackLayoutSpecWithDirection:ASStackLayoutDirectionVertical spacing:0.0 justifyContent:ASStackLayoutJustifyContentStart alignItems:ASStackLayoutAlignItemsStretch children:stackChildren];
+  
+  ASOverlayLayoutSpec *soldOutOverlay = [ASOverlayLayoutSpec overlayLayoutSpecWithChild:mainStack overlay:self.soldOutOverlay];
+  
+  return soldOutOverlay;
+}
+
+- (ASLayoutSpec *)textSpec {
+  CGFloat kInsetHorizontal = 16.0;
+  CGFloat kInsetTop = 6.0;
+  CGFloat kInsetBottom = 0.0;
+  
+  UIEdgeInsets textInsets = UIEdgeInsetsMake(kInsetTop, kInsetHorizontal, kInsetBottom, kInsetHorizontal);
+  
+  ASLayoutSpec *verticalSpacer = [[ASLayoutSpec alloc] init];
+  verticalSpacer.flexGrow = YES;
+  
+  ASLayoutSpec *horizontalSpacer1 = [[ASLayoutSpec alloc] init];
+  horizontalSpacer1.flexGrow = YES;
+  
+  ASLayoutSpec *horizontalSpacer2 = [[ASLayoutSpec alloc] init];
+  horizontalSpacer2.flexGrow = YES;
+  
+  NSArray *info1Children = @[self.firstInfoLabel, self.distanceLabel, horizontalSpacer1, self.originalPriceLabel];
+  NSArray *info2Children = @[self.secondInfoLabel, horizontalSpacer2, self.finalPriceLabel];
+  if ([ItemNode isRTL]) {
+    info1Children = [[info1Children reverseObjectEnumerator] allObjects];
+    info2Children = [[info2Children reverseObjectEnumerator] allObjects];
+  }
+  
+  ASStackLayoutSpec *info1Stack = [ASStackLayoutSpec stackLayoutSpecWithDirection:ASStackLayoutDirectionHorizontal spacing:1.0 justifyContent:ASStackLayoutJustifyContentStart alignItems:ASStackLayoutAlignItemsBaselineLast children:info1Children];
+  
+  ASStackLayoutSpec *info2Stack = [ASStackLayoutSpec stackLayoutSpecWithDirection:ASStackLayoutDirectionHorizontal spacing:0.0 justifyContent:ASStackLayoutJustifyContentCenter alignItems:ASStackLayoutAlignItemsBaselineLast children:info2Children];
+  
+  ASStackLayoutSpec *textStack = [ASStackLayoutSpec stackLayoutSpecWithDirection:ASStackLayoutDirectionVertical spacing:0.0 justifyContent:ASStackLayoutJustifyContentEnd alignItems:ASStackLayoutAlignItemsStretch children:@[self.titleLabel, verticalSpacer, info1Stack, info2Stack]];
+  
+  ASInsetLayoutSpec *textWrapper = [ASInsetLayoutSpec insetLayoutSpecWithInsets:textInsets child:textStack];
+  textWrapper.flexGrow = YES;
+  
+  return textWrapper;
+}
+
+- (ASLayoutSpec *)imageSpecWithSize:(ASSizeRange)constrainedSize {
+  CGFloat imageRatio = [self imageRatioFromSize:constrainedSize.max];
+  
+  ASRatioLayoutSpec *imagePlace = [ASRatioLayoutSpec ratioLayoutSpecWithRatio:imageRatio child:self.dealImageView];
+  
+  self.badge.layoutPosition = CGPointMake(0, constrainedSize.max.height - kFixedLabelsAreaHeight - kBadgeHeight);
+  self.badge.sizeRange = ASRelativeSizeRangeMake(ASRelativeSizeMake(ASRelativeDimensionMakeWithPercent(0), ASRelativeDimensionMakeWithPoints(kBadgeHeight)), ASRelativeSizeMake(ASRelativeDimensionMakeWithPercent(1), ASRelativeDimensionMakeWithPoints(kBadgeHeight)));
+  ASStaticLayoutSpec *badgePosition = [ASStaticLayoutSpec staticLayoutSpecWithChildren:@[self.badge]];
+  
+  ASOverlayLayoutSpec *badgeOverImage = [ASOverlayLayoutSpec overlayLayoutSpecWithChild:imagePlace overlay:badgePosition];
+  badgeOverImage.flexGrow = YES;
+  
+  return badgeOverImage;
+}
+
+- (ASLayoutSpec *)soldOutLabelSpec {
+  ASCenterLayoutSpec *centerSoldOutLabel = [ASCenterLayoutSpec centerLayoutSpecWithCenteringOptions:ASCenterLayoutSpecCenteringXY sizingOptions:ASCenterLayoutSpecSizingOptionMinimumXY child:self.soldOutLabelFlat];
+  ASStaticLayoutSpec *soldOutBG = [ASStaticLayoutSpec staticLayoutSpecWithChildren:@[self.soldOutLabelBackground]];
+  ASCenterLayoutSpec *centerSoldOut = [ASCenterLayoutSpec centerLayoutSpecWithCenteringOptions:ASCenterLayoutSpecCenteringXY sizingOptions:ASCenterLayoutSpecSizingOptionDefault child:soldOutBG];
+  ASBackgroundLayoutSpec *soldOutLabelOverBackground = [ASBackgroundLayoutSpec backgroundLayoutSpecWithChild:centerSoldOutLabel background:centerSoldOut];
+  return soldOutLabelOverBackground;
+}
+
+
++ (CGSize)sizeForWidth:(CGFloat)width {
+  CGFloat height = [self scaledHeightForPreferredSize:[self preferredViewSize] scaledWidth:width];
+  return CGSizeMake(width, height);
+}
+
+
++ (CGSize)preferredViewSize {
+  return CGSizeMake(kDesignWidth, kDesignHeight);
+}
+
++ (CGFloat)scaledHeightForPreferredSize:(CGSize)preferredSize scaledWidth:(CGFloat)scaledWidth {
+  CGFloat scale = scaledWidth / kDesignWidth;
+  CGFloat scaledHeight = ceilf(scale * (kDesignHeight - kFixedLabelsAreaHeight)) + kFixedLabelsAreaHeight;
+  
+  return scaledHeight;
+}
+
+#pragma mark - view operations
+
+- (CGFloat)imageRatioFromSize:(CGSize)size {
+  CGFloat imageHeight = size.height - kFixedLabelsAreaHeight;
+  CGFloat imageRatio = imageHeight / size.width;
+  
+  return imageRatio;
+}
+
+- (CGSize)imageSize {
+  if (!CGSizeEqualToSize(self.dealImageView.frame.size, CGSizeZero)) {
+    return self.dealImageView.frame.size;
+  } else if (!CGSizeEqualToSize(self.calculatedSize, CGSizeZero)) {
+    CGFloat imageRatio = [self imageRatioFromSize:self.calculatedSize];
+    CGFloat imageWidth = self.calculatedSize.width;
+    return CGSizeMake(imageWidth, imageRatio * imageWidth);
+  } else {
+    return CGSizeZero;
+  }
+}
+
+- (void)loadImage {
+  CGSize imageSize = [self imageSize];
+  if (CGSizeEqualToSize(CGSizeZero, imageSize)) {
+    return;
+  }
+  
+  NSURL *url = [self.viewModel imageURLWithSize:imageSize];
+  
+  // if we're trying to set the deal image to what it already was, skip the work
+  if ([[url absoluteString] isEqualToString:[self.dealImageView.URL absoluteString]]) {
+    return;
+  }
+  
+  // Clear the flag that says we've loaded our image
+  [self.dealImageView setURL:url];
+}
+
+@end

examples/CatDealsCollectionView/Sample/ItemStyles.h

@@ -0,0 +1,23 @@
+//
+//  ItemStyles.h
+//  Sample
+//
+//  Created by Samuel Stow on 12/30/15.
+//  Copyright © 2015 Facebook. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+@interface ItemStyles : NSObject
++ (NSDictionary *)titleStyle;
++ (NSDictionary *)subtitleStyle;
++ (NSDictionary *)distanceStyle;
++ (NSDictionary *)secondInfoStyle;
++ (NSDictionary *)originalPriceStyle;
++ (NSDictionary *)finalPriceStyle;
++ (NSDictionary *)soldOutStyle;
++ (NSDictionary *)badgeStyle;
++ (UIColor *)badgeColor;
++ (UIImage *)placeholderImage;
+@end

examples/CatDealsCollectionView/Sample/ItemStyles.m

@@ -0,0 +1,93 @@
+//
+//  ItemStyles.m
+//  Sample
+//
+//  Created by Samuel Stow on 12/30/15.
+//  Copyright © 2015 Facebook. All rights reserved.
+//
+
+#import "ItemStyles.h"
+
+const CGFloat kTitleFontSize = 20.0;
+const CGFloat kInfoFontSize = 14.0;
+
+UIColor *kTitleColor;
+UIColor *kInfoColor;
+UIColor *kFinalPriceColor;
+UIFont *kTitleFont;
+UIFont *kInfoFont;
+
+@implementation ItemStyles
+
++ (void)initialize {
+  if (self == [ItemStyles class]) {
+    kTitleColor = [UIColor darkGrayColor];
+    kInfoColor = [UIColor grayColor];
+    kFinalPriceColor = [UIColor greenColor];
+    kTitleFont = [UIFont boldSystemFontOfSize:kTitleFontSize];
+    kInfoFont = [UIFont systemFontOfSize:kInfoFontSize];
+  }
+}
+
++ (NSDictionary *)titleStyle {
+  // Title Label
+  return @{ NSFontAttributeName:kTitleFont,
+            NSForegroundColorAttributeName:kTitleColor };
+}
+
++ (NSDictionary *)subtitleStyle {
+  // First Subtitle
+  return @{ NSFontAttributeName:kInfoFont,
+            NSForegroundColorAttributeName:kInfoColor };
+}
+
++ (NSDictionary *)distanceStyle {
+  // Distance Label
+  return @{ NSFontAttributeName:kInfoFont,
+            NSForegroundColorAttributeName:kInfoColor};
+}
+
++ (NSDictionary *)secondInfoStyle {
+  // Second Subtitle
+  return @{ NSFontAttributeName:kInfoFont,
+            NSForegroundColorAttributeName:kInfoColor};
+}
+
++ (NSDictionary *)originalPriceStyle {
+  // Original price
+  return @{ NSFontAttributeName:kInfoFont,
+            NSForegroundColorAttributeName:kInfoColor,
+            NSStrikethroughStyleAttributeName:@(NSUnderlineStyleSingle)};
+}
+
++ (NSDictionary *)finalPriceStyle {
+  //     Discounted / Claimable price label
+  return @{ NSFontAttributeName:kTitleFont,
+            NSForegroundColorAttributeName:kFinalPriceColor};
+}
+
++ (NSDictionary *)soldOutStyle {
+  // Setup Sold Out Label
+  return @{ NSFontAttributeName:kTitleFont,
+            NSForegroundColorAttributeName:kTitleColor};
+}
+
++ (NSDictionary *)badgeStyle {
+  // Setup Sold Out Label
+  return @{ NSFontAttributeName:kTitleFont,
+            NSForegroundColorAttributeName:[UIColor whiteColor]};
+}
+
++ (UIColor *)badgeColor {
+  return [[UIColor purpleColor] colorWithAlphaComponent:0.4];
+}
+
++ (UIImage *)placeholderImage {
+  static UIImage *__catFace = nil;
+  if (!__catFace) {
+    __catFace = [UIImage imageNamed:@"cat_face"];
+  }
+  return __catFace;
+}
+
+@end

examples/CatDealsCollectionView/Sample/ItemViewModel.h

@@ -0,0 +1,27 @@
+//
+//  GPDealViewModel.h
+//  Groupon
+//
+//  Created by Samuel Stow on 12/29/15.
+//  Copyright © 2015 Groupon Inc. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+@interface ItemViewModel : NSObject
+
++ (instancetype)randomItem;
+
+@property (nonatomic, copy) NSString *titleText;
+@property (nonatomic, copy) NSString *firstInfoText;
+@property (nonatomic, copy) NSString *secondInfoText;
+@property (nonatomic, copy) NSString *originalPriceText;
+@property (nonatomic, copy) NSString *finalPriceText;
+@property (nonatomic, copy) NSString *soldOutText;
+@property (nonatomic, copy) NSString *distanceLabelText;
+@property (nonatomic, copy) NSString *badgeText;
+
+- (NSURL *)imageURLWithSize:(CGSize)size;
+
+@end

examples/CatDealsCollectionView/Sample/ItemViewModel.m

@@ -0,0 +1,99 @@
+//
+//  GPDealViewModel.m
+//  Groupon
+//
+//  Created by Samuel Stow on 12/29/15.
+//  Copyright © 2015 Groupon Inc. All rights reserved.
+//
+
+#import "ItemViewModel.h"
+
+NSArray *titles;
+NSArray *firstInfos;
+NSArray *badges;
+
+@interface ItemViewModel()
+
+@property (nonatomic, assign) NSInteger catNumber;
+@property (nonatomic, assign) NSInteger labelNumber;
+
+@end
+
+@implementation ItemViewModel
+
++ (instancetype)randomItem {
+  return [[ItemViewModel alloc] init];
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (self) {
+        _titleText = [self randomObjectFromArray:titles];
+        _firstInfoText = [self randomObjectFromArray:firstInfos];
+        _secondInfoText = [NSString stringWithFormat:@"%zd+ bought", [self randomNumberInRange:5 to:6000]];
+        _originalPriceText = [NSString stringWithFormat:@"$%zd", [self randomNumberInRange:40 to:90]];
+        _finalPriceText = [NSString stringWithFormat:@"$%zd", [self randomNumberInRange:5 to:30]];
+        BOOL isSoldOut = arc4random() % 5 == 0;
+        _soldOutText = isSoldOut ? @"SOLD OUT" : nil;
+        _distanceLabelText = [NSString stringWithFormat:@"%zd mi", [self randomNumberInRange:1 to:20]];
+        BOOL isBadged = arc4random() % 2 == 0;
+        if (isBadged) {
+            _badgeText = [self randomObjectFromArray:badges];
+        }
+        _catNumber = [self randomNumberInRange:1 to:10];
+        _labelNumber = [self randomNumberInRange:1 to:10000];
+        
+    }
+    return self;
+}
+
+- (NSURL *)imageURLWithSize:(CGSize)size {
+  NSString *imageText = [NSString stringWithFormat:@"Fun cat pic %zd", self.labelNumber];
+  NSString *urlString = [NSString stringWithFormat:@"http://lorempixel.com/%zd/%zd/cats/%zd/%@",
+                         (NSInteger)roundl(size.width),
+                         (NSInteger)roundl(size.height), self.catNumber, imageText];
+  urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
+  
+  return [NSURL URLWithString:urlString];
+}
+
+// titles courtesy of http://www.catipsum.com/
++ (void)initialize {
+  titles = @[@"Leave fur on owners clothes intrigued by the shower",
+             @"Meowwww",
+             @"Immediately regret falling into bathtub stare out the window",
+             @"Jump launch to pounce upon little yarn mouse, bare fangs at toy run hide in litter box until treats are fed",
+             @"Sleep nap",
+             @"Lick butt",
+             @"Chase laser lick arm hair present belly, scratch hand when stroked"];
+  firstInfos = @[@"Kitty Shop",
+                 @"Cat's r us",
+                 @"Fantastic Felines",
+                 @"The Cat Shop",
+                 @"Cat in a hat",
+                 @"Cat-tastic"
+                 ];
+  
+  badges = @[@"ADORABLE",
+             @"BOUNCES",
+             @"HATES CUCUMBERS",
+             @"SCRATCHY"
+             ];
+}
+
+
+- (id)randomObjectFromArray:(NSArray *)strings
+{
+  u_int32_t ipsumCount = (u_int32_t)[strings count];
+  u_int32_t location = arc4random_uniform(ipsumCount);
+  
+  return strings[location];
+}
+
+- (uint32_t)randomNumberInRange:(uint32_t)start to:(uint32_t)end {
+  
+  return start + arc4random_uniform(end - start);
+}
+
+
+@end

examples/CatDealsCollectionView/Sample/Launchboard.storyboard

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="6211" systemVersion="14A298i" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6204"/>
+    </dependencies>
+    <scenes/>
+</document>

examples/CatDealsCollectionView/Sample/LoadingNode.h

@@ -0,0 +1,15 @@
+//
+//  LoadingNode.h
+//  Sample
+//
+//  Created by Samuel Stow on 1/9/16.
+//  Copyright © 2016 Facebook. All rights reserved.
+//
+
+#import <AsyncDisplayKit/AsyncDisplayKit.h>
+
+@interface LoadingNode : ASCellNode
+
++ (CGFloat)desiredHeightForWidth:(CGFloat)width;
+
+@end

examples/CatDealsCollectionView/Sample/LoadingNode.m

@@ -0,0 +1,68 @@
+//
+//  LoadingNode.m
+//  Sample
+//
+//  Created by Samuel Stow on 1/9/16.
+//  Copyright © 2016 Facebook. All rights reserved.
+//
+
+#import "LoadingNode.h"
+#import <AsyncDisplayKit/ASDisplayNode+Subclasses.h>
+#import <AsyncDisplayKit/ASHighlightOverlayLayer.h>
+
+#import <AsyncDisplayKit/ASInsetLayoutSpec.h>
+#import <AsyncDisplayKit/ASCenterLayoutSpec.h>
+
+static CGFloat kFixedHeight = 200.0f;
+
+@interface LoadingNode ()
+{
+  ASDisplayNode *_loadingSpinner;
+}
+
+@end
+
+@implementation LoadingNode
+
+
+#pragma mark -
+#pragma mark ASCellNode.
+
++ (CGFloat)desiredHeightForWidth:(CGFloat)width {
+  return kFixedHeight;
+}
+
+- (instancetype)init
+{
+  if (!(self = [super init]))
+    return nil;
+  
+  _loadingSpinner = [[ASDisplayNode alloc] initWithViewBlock:^UIView * _Nonnull{
+    UIActivityIndicatorView *spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
+    [spinner startAnimating];
+    return spinner;
+  }];
+  _loadingSpinner.preferredFrameSize = CGSizeMake(50, 50);
+  
+  
+  // add it as a subnode, and we're done
+  [self addSubnode:_loadingSpinner];
+  
+  return self;
+}
+
+- (void)layout {
+  [super layout];
+}
+
+- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
+{
+  ASCenterLayoutSpec *centerSpec = [[ASCenterLayoutSpec alloc] init];
+  centerSpec.centeringOptions = ASCenterLayoutSpecCenteringXY;
+  centerSpec.sizingOptions = ASCenterLayoutSpecSizingOptionDefault;
+  centerSpec.child = _loadingSpinner;
+  
+  return centerSpec;
+}
+
+@end

examples/CatDealsCollectionView/Sample/PlaceholderNetworkImageNode.h

@@ -0,0 +1,15 @@
+//
+//  PlacholderNetworkImageNode.h
+//  Sample
+//
+//  Created by Samuel Stow on 1/14/16.
+//  Copyright © 2016 Facebook. All rights reserved.
+//
+
+#import <AsyncDisplayKit/AsyncDisplayKit.h>
+
+@interface PlaceholderNetworkImageNode : ASNetworkImageNode
+
+@property (nonatomic, strong) UIImage *placeholderImageOverride;
+
+@end

examples/CatDealsCollectionView/Sample/PlaceholderNetworkImageNode.m

@@ -0,0 +1,18 @@
+//
+//  PlacholderNetworkImageNode.m
+//  Sample
+//
+//  Created by Samuel Stow on 1/14/16.
+//  Copyright © 2016 Facebook. All rights reserved.
+//
+
+#import "PlaceholderNetworkImageNode.h"
+
+@implementation PlaceholderNetworkImageNode
+
+- (UIImage *)placeholderImage {
+  return self.placeholderImageOverride;
+}
+
+
+@end

examples/CatDealsCollectionView/Sample/PresentingViewController.h

@@ -0,0 +1,13 @@
+//
+//  PresentingViewController.h
+//  Sample
+//
+//  Created by Tom King on 12/23/15.
+//  Copyright © 2015 Facebook. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface PresentingViewController : UIViewController
+
+@end

examples/CatDealsCollectionView/Sample/PresentingViewController.m

@@ -0,0 +1,30 @@
+//
+//  PresentingViewController.m
+//  Sample
+//
+//  Created by Tom King on 12/23/15.
+//  Copyright © 2015 Facebook. All rights reserved.
+//
+
+#import "PresentingViewController.h"
+#import "ViewController.h"
+
+@interface PresentingViewController ()
+
+@end
+
+@implementation PresentingViewController
+
+- (void)viewDidLoad
+{
+  [super viewDidLoad];
+  self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Push Details" style:UIBarButtonItemStylePlain target:self action:@selector(pushNewViewController)];
+}
+
+- (void)pushNewViewController
+{
+  ViewController *controller = [[ViewController alloc] init];
+  [self.navigationController pushViewController:controller animated:true];
+}
+
+@end

examples/CatDealsCollectionView/Sample/ViewController.h

@@ -0,0 +1,16 @@
+/* This file provided by Facebook is for non-commercial testing and evaluation
+ * purposes only.  Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#import <UIKit/UIKit.h>
+
+@interface ViewController : UIViewController
+
+@end

examples/CatDealsCollectionView/Sample/ViewController.m

@@ -0,0 +1,244 @@
+/* This file provided by Facebook is for non-commercial testing and evaluation
+ * purposes only.  Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#import "ViewController.h"
+
+#import <AsyncDisplayKit/AsyncDisplayKit.h>
+#import "ItemNode.h"
+#import "BlurbNode.h"
+#import "LoadingNode.h"
+
+static const NSTimeInterval kWebResponseDelay = 1.0;
+static const BOOL kSimulateWebResponse = YES;
+static const NSInteger kBatchSize = 20;
+
+static const CGFloat kHorizontalSectionPadding = 10.0f;
+static const CGFloat kVerticalSectionPadding = 20.0f;
+
+@interface ViewController () <ASCollectionViewDataSource, ASCollectionViewDelegateFlowLayout>
+{
+  ASCollectionView *_collectionView;
+  NSMutableArray *_data;
+}
+
+@end
+
+
+@implementation ViewController
+
+#pragma mark -
+#pragma mark UIViewController.
+
+- (instancetype)init
+{
+  self = [super init];
+  
+  if (self) {
+    
+    self.title = @"Cat Deals";
+    
+    UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
+    
+    _collectionView = [[ASCollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
+    _collectionView.asyncDataSource = self;
+    _collectionView.asyncDelegate = self;
+    _collectionView.backgroundColor = [UIColor grayColor];
+    _collectionView.leadingScreensForBatching = 2;
+    
+    ASRangeTuningParameters fetchDataTuning;
+    fetchDataTuning.leadingBufferScreenfuls = 2;
+    fetchDataTuning.trailingBufferScreenfuls = 1;
+    [_collectionView setTuningParameters:fetchDataTuning forRangeType:ASLayoutRangeTypeFetchData];
+    
+    ASRangeTuningParameters preRenderTuning;
+    preRenderTuning.leadingBufferScreenfuls = 1;
+    preRenderTuning.trailingBufferScreenfuls = 0.5;
+    [_collectionView setTuningParameters:preRenderTuning forRangeType:ASLayoutRangeTypeDisplay];
+    
+    [_collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionHeader];
+    [_collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionFooter];
+    
+    _data = [[NSMutableArray alloc] init];
+    
+    self.navigationItem.leftItemsSupplementBackButton = YES;
+    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(reloadTapped)];
+  }
+  
+  return self;
+}
+
+- (void)viewDidLoad
+{
+  [super viewDidLoad];
+  
+  [self.view addSubview:_collectionView];
+  [self fetchMoreCatsWithCompletion:nil];
+}
+
+- (void)fetchMoreCatsWithCompletion:(void (^)(BOOL))completion {
+  if (kSimulateWebResponse) {
+    __weak typeof(self) weakSelf = self;
+    void(^mockWebService)() = ^{
+      NSLog(@"ViewController \"got data from a web service\"");
+      ViewController *strongSelf = weakSelf;
+      if (strongSelf != nil)
+      {
+        NSLog(@"ViewController is not nil");
+        [strongSelf appendMoreItems:kBatchSize completion:completion];
+        NSLog(@"ViewController finished updating collectionView");
+      }
+      else {
+        NSLog(@"ViewController is nil - won't update collectionView");
+      }
+    };
+    
+    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(kWebResponseDelay * NSEC_PER_SEC)), dispatch_get_main_queue(), mockWebService);
+  } else {
+    [self appendMoreItems:kBatchSize completion:completion];
+  }
+}
+
+- (void)appendMoreItems:(NSInteger)numberOfNewItems completion:(void (^)(BOOL))completion {
+  NSArray *newData = [self getMoreData:numberOfNewItems];
+  dispatch_async(dispatch_get_main_queue(), ^{
+    [_collectionView performBatchUpdates:^{
+      [_data addObjectsFromArray:newData];
+      NSArray *addedIndexPaths = [self indexPathsForObjects:newData];
+      [_collectionView insertItemsAtIndexPaths:addedIndexPaths];
+    } completion:completion];
+  });
+}
+
+- (NSArray *)getMoreData:(NSInteger)count {
+  NSMutableArray *data = [NSMutableArray array];
+  for (int i = 0; i < count; i++) {
+    [data addObject:[ItemViewModel randomItem]];
+  }
+  return data;
+}
+
+- (NSArray *)indexPathsForObjects:(NSArray *)data {
+  NSMutableArray *indexPaths = [NSMutableArray array];
+  NSInteger section = 0;
+  for (ItemViewModel *viewModel in data) {
+    NSInteger item = [_data indexOfObject:viewModel];
+    NSAssert(item < [_data count] && item != NSNotFound, @"Item should be in _data");
+    [indexPaths addObject:[NSIndexPath indexPathForItem:item inSection:section]];
+  }
+  return indexPaths;
+}
+
+- (void)viewWillLayoutSubviews
+{
+  _collectionView.frame = self.view.bounds;
+}
+
+
+- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator {
+  [_collectionView.collectionViewLayout invalidateLayout];
+}
+
+- (BOOL)prefersStatusBarHidden
+{
+  return YES;
+}
+
+- (void)reloadTapped
+{
+  [_collectionView reloadData];
+}
+
+#pragma mark -
+#pragma mark ASCollectionView data source.
+
+- (ASCellNode *)collectionView:(ASCollectionView *)collectionView nodeForItemAtIndexPath:(NSIndexPath *)indexPath
+{
+  ItemViewModel *viewModel = _data[indexPath.item];
+  return [[ItemNode alloc] initWithViewModel:viewModel];
+}
+
+- (ASCellNode *)collectionView:(UICollectionView *)collectionView nodeForSupplementaryElementOfKind:(nonnull NSString *)kind atIndexPath:(nonnull NSIndexPath *)indexPath {
+  if ([kind isEqualToString:UICollectionElementKindSectionHeader] && indexPath.section == 0) {
+    return [[BlurbNode alloc] init];
+  } else if ([kind isEqualToString:UICollectionElementKindSectionFooter] && indexPath.section == 0) {
+    return [[LoadingNode alloc] init];
+  }
+  return nil;
+}
+
+- (CGSize)collectionView:(ASCollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section {
+  if (section == 0) {
+    CGFloat width = CGRectGetWidth(self.view.frame) - 2 * kHorizontalSectionPadding;
+    return CGSizeMake(width, [BlurbNode desiredHeightForWidth:width]);
+  }
+  return CGSizeZero;
+}
+
+- (CGSize)collectionView:(ASCollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout referenceSizeForFooterInSection:(NSInteger)section {
+  if (section == 0) {
+    CGFloat width = CGRectGetWidth(self.view.frame);
+    return CGSizeMake(width, [LoadingNode desiredHeightForWidth:width]);
+  }
+  return CGSizeZero;
+}
+
+- (ASSizeRange)collectionView:(ASCollectionView *)collectionView constrainedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath {
+  CGFloat collectionViewWidth = CGRectGetWidth(self.view.frame) - 2 * kHorizontalSectionPadding;
+  CGFloat oneItemWidth = [ItemNode preferredViewSize].width;
+  NSInteger numColumns = floor(collectionViewWidth / oneItemWidth);
+  // Number of columns should be at least 1
+  numColumns = MAX(1, numColumns);
+  
+  CGFloat totalSpaceBetweenColumns = (numColumns - 1) * kHorizontalSectionPadding;
+  CGFloat itemWidth = ((collectionViewWidth - totalSpaceBetweenColumns) / numColumns);
+  CGSize itemSize = [ItemNode sizeForWidth:itemWidth];
+  return ASSizeRangeMake(itemSize, itemSize);
+}
+
+- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
+{
+  return [_data count];
+}
+
+- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
+{
+  return 1;
+}
+
+- (void)collectionViewLockDataSource:(ASCollectionView *)collectionView
+{
+  // lock the data source
+  // The data source should not be change until it is unlocked.
+}
+
+- (void)collectionViewUnlockDataSource:(ASCollectionView *)collectionView
+{
+  // unlock the data source to enable data source updating.
+}
+
+- (void)collectionView:(UICollectionView *)collectionView willBeginBatchFetchWithContext:(ASBatchContext *)context
+{
+  NSLog(@"fetch additional content");
+  [self fetchMoreCatsWithCompletion:^(BOOL finished){
+    [context completeBatchFetching:YES];
+  }];
+}
+
+- (UIEdgeInsets)collectionView:(ASCollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
+  return UIEdgeInsetsMake(kVerticalSectionPadding, kHorizontalSectionPadding, kVerticalSectionPadding, kHorizontalSectionPadding);
+}
+
+-(void)dealloc
+{
+  NSLog(@"ViewController is deallocing");
+}
+
+@end

examples/CatDealsCollectionView/Sample/main.m

@@ -0,0 +1,19 @@
+/* This file provided by Facebook is for non-commercial testing and evaluation
+ * purposes only.  Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char * argv[]) {
+  @autoreleasepool {
+      return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+  }
+}

examples/SynchronousKittens/Sample.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Sample.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

examples/VideoTableView/Sample.xcodeproj/project.pbxproj

@@ -128,7 +128,6 @@
 				05E2127E19D4DB510098F589 /* Frameworks */,
 				05E2127F19D4DB510098F589 /* Resources */,
 				F012A6F39E0149F18F564F50 /* Copy Pods Resources */,
-				A5C135CBCFD74D965DE0D799 /* Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
@@ -185,21 +184,6 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXShellScriptBuildPhase section */
-		A5C135CBCFD74D965DE0D799 /* Embed Pods Frameworks */ = {
-			isa = PBXShellScriptBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			inputPaths = (
-			);
-			name = "Embed Pods Frameworks";
-			outputPaths = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-			shellPath = /bin/sh;
-			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods/Pods-frameworks.sh\"\n";
-			showEnvVarsInLog = 0;
-		};
 		E080B80F89C34A25B3488E26 /* Check Pods Manifest.lock */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;