Update Layout Examples to ASDK 2.0 (#2551)

* Objective-c project updated to ASDK 2.0 * fix assets error * [LayoutSpecExamples] Renamed new example project to be easier to type / find. * [Bulid] Manually create Sample.xcscheme file to hopefully fix complaining bulid :). * clean up project * commentary on ASAbsoluteLayoutSpec * address @maicki's comments
2025-12-24 07:05:35 +00:00 · 2016-11-06 13:47:48 -08:00
parent 735d1411d2
commit 7a373ac638
18 changed files with 1251 additions and 0 deletions
--- a/examples/LayoutSpecExamples/Podfile
+++ b/examples/LayoutSpecExamples/Podfile
@@ -0,0 +1,6 @@
+source 'https://github.com/CocoaPods/Specs.git'
+platform :ios, '7.0'
+target 'Sample' do
+	pod 'AsyncDisplayKit', :path => '../..'
+end
+
--- a/examples/LayoutSpecExamples/Sample.xcodeproj/project.pbxproj
+++ b/examples/LayoutSpecExamples/Sample.xcodeproj/project.pbxproj
@@ -0,0 +1,391 @@
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+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "694993CC1C8B334F00491CA5"
+            BuildableName = "Sample.app"
+            BlueprintName = "Sample"
+            ReferencedContainer = "container:Sample.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "694993CC1C8B334F00491CA5"
+            BuildableName = "Sample.app"
+            BlueprintName = "Sample"
+            ReferencedContainer = "container:Sample.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
--- a/examples/LayoutSpecExamples/Sample/AppDelegate.h
+++ b/examples/LayoutSpecExamples/Sample/AppDelegate.h
@@ -0,0 +1,16 @@
+//
+//  AppDelegate.h
+//  Sample
+//
+//  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 <UIKit/UIKit.h>
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+@property (strong, nonatomic) UIWindow *window;
+@end
+
--- a/examples/LayoutSpecExamples/Sample/AppDelegate.m
+++ b/examples/LayoutSpecExamples/Sample/AppDelegate.m
@@ -0,0 +1,30 @@
+//
+//  AppDelegate.m
+//  Sample
+//
+//  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 "AppDelegate.h"
+#import "OverviewViewController.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] initWithRootViewController:[OverviewViewController new]];
+  [self.window makeKeyAndVisible];
+  
+  [[UINavigationBar appearance] setBarTintColor:[UIColor colorWithRed:47/255.0 green:184/255.0 blue:253/255.0 alpha:1.0]];
+  [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];
+  [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor whiteColor]}];;
+  
+  return YES;
+}
+
+@end
--- a/examples/LayoutSpecExamples/Sample/Base.lproj/LaunchScreen.storyboard
+++ b/examples/LayoutSpecExamples/Sample/Base.lproj/LaunchScreen.storyboard
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10116" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Llm-lL-Icb"/>
+                        <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>
--- a/examples/LayoutSpecExamples/Sample/Info.plist
+++ b/examples/LayoutSpecExamples/Sample/Info.plist
@@ -0,0 +1,43 @@
+<?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>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</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>NSAppTransportSecurity</key>
+	<dict>
+		<key>NSAllowsArbitraryLoads</key>
+		<true/>
+	</dict>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>
--- a/examples/LayoutSpecExamples/Sample/LayoutExampleNodes.h
+++ b/examples/LayoutSpecExamples/Sample/LayoutExampleNodes.h
@@ -0,0 +1,28 @@
+//
+//  LayoutExampleNodes.h
+//  Sample
+//
+//  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>
+
+@interface LayoutExampleNode : ASDisplayNode
+ (NSString *)title;
+ (NSString *)descriptionTitle;
+@end
+
+@interface HeaderWithRightAndLeftItems : LayoutExampleNode
+@end
+
+@interface PhotoWithInsetTextOverlay : LayoutExampleNode
+@end
+
+@interface PhotoWithOutsetIconOverlay : LayoutExampleNode
+@end
+
+@interface FlexibleSeparatorSurroundingContent : LayoutExampleNode
+@end
--- a/examples/LayoutSpecExamples/Sample/LayoutExampleNodes.m
+++ b/examples/LayoutSpecExamples/Sample/LayoutExampleNodes.m
@@ -0,0 +1,256 @@
+//
+//  LayoutExampleNodes.m
+//  Sample
+//
+//  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 "LayoutExampleNodes.h"
+#import "Utilities.h"
+#import "UIImage+ASConvenience.h"
+
+@interface HeaderWithRightAndLeftItems ()
+@property (nonatomic, strong) ASTextNode *usernameNode;
+@property (nonatomic, strong) ASTextNode *postLocationNode;
+@property (nonatomic, strong) ASTextNode *postTimeNode;
+@end
+
+@interface PhotoWithInsetTextOverlay ()
+@property (nonatomic, strong) ASNetworkImageNode *photoNode;
+@property (nonatomic, strong) ASTextNode *titleNode;
+@end
+
+@interface PhotoWithOutsetIconOverlay ()
+@property (nonatomic, strong) ASNetworkImageNode *photoNode;
+@property (nonatomic, strong) ASNetworkImageNode *iconNode;
+@end
+
+@interface FlexibleSeparatorSurroundingContent ()
+@property (nonatomic, strong) ASImageNode *topSeparator;
+@property (nonatomic, strong) ASImageNode *bottomSeparator;
+@property (nonatomic, strong) ASTextNode *textNode;
+@end
+
+@implementation HeaderWithRightAndLeftItems
+
+ (NSString *)title
+{
+  return @"Header with left and right justified text";
+}
+
+ (NSString *)descriptionTitle
+{
+  return @"try rotating me!";
+}
+
+- (instancetype)init
+{
+  self = [super init];
+  
+  if (self) {
+    _usernameNode = [[ASTextNode alloc] init];
+    _usernameNode.attributedText = [NSAttributedString attributedStringWithString:@"hannahmbanana"
+                                                                         fontSize:20
+                                                                            color:[UIColor darkBlueColor]];
+    _usernameNode.maximumNumberOfLines = 1;
+    _usernameNode.truncationMode = NSLineBreakByTruncatingTail;
+    
+    _postLocationNode = [[ASTextNode alloc] init];
+    _postLocationNode.maximumNumberOfLines = 1;
+    _postLocationNode.attributedText = [NSAttributedString attributedStringWithString:@"Sunset Beach, San Fransisco, CA"
+                                                                             fontSize:20
+                                                                                color:[UIColor lightBlueColor]];
+    _postLocationNode.maximumNumberOfLines = 1;
+    _postLocationNode.truncationMode = NSLineBreakByTruncatingTail;
+    
+    _postTimeNode = [[ASTextNode alloc] init];
+    _postTimeNode.attributedText = [NSAttributedString attributedStringWithString:@"30m"
+                                                                         fontSize:20
+                                                                            color:[UIColor lightGrayColor]];
+    _postLocationNode.maximumNumberOfLines = 1;
+    _postLocationNode.truncationMode = NSLineBreakByTruncatingTail;
+  }
+  
+  return self;
+}
+
+@end
+
+
+@implementation PhotoWithInsetTextOverlay
+
+ (NSString *)title
+{
+  return @"Photo with inset text overlay";
+}
+
+ (NSString *)descriptionTitle
+{
+  return @"try rotating me!";
+}
+
+- (instancetype)init
+{
+  self = [super init];
+  
+  if (self) {
+    self.backgroundColor = [UIColor clearColor];
+    
+    _photoNode = [[ASNetworkImageNode alloc] init];
+    _photoNode.URL = [NSURL URLWithString:@"http://asyncdisplaykit.org/static/images/layout-examples-photo-with-inset-text-overlay-photo.png"];
+    _photoNode.willDisplayNodeContentWithRenderingContext = ^(CGContextRef context) {
+      CGRect bounds = CGContextGetClipBoundingBox(context);
+      [[UIBezierPath bezierPathWithRoundedRect:bounds cornerRadius:10] addClip];
+    };
+    
+    _titleNode = [[ASTextNode alloc] init];
+    _titleNode.maximumNumberOfLines = 2;
+    _titleNode.truncationMode = NSLineBreakByTruncatingTail;
+    _titleNode.truncationAttributedText = [NSAttributedString attributedStringWithString:@"..." fontSize:16 color:[UIColor whiteColor]];
+    _titleNode.attributedText = [NSAttributedString attributedStringWithString:@"family fall hikes" fontSize:16 color:[UIColor whiteColor]];
+  }
+  
+  return self;
+}
+
+- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
+{
+  CGFloat photoDimension = constrainedSize.max.width / 4.0;
+  _photoNode.style.preferredSize = CGSizeMake(photoDimension, photoDimension);
+
+  // INFINITY is used to make the inset unbounded
+  UIEdgeInsets insets = UIEdgeInsetsMake(INFINITY, 12, 12, 12);
+  ASInsetLayoutSpec *textInsetSpec = [ASInsetLayoutSpec insetLayoutSpecWithInsets:insets child:_titleNode];
+  
+  return [ASOverlayLayoutSpec overlayLayoutSpecWithChild:_photoNode overlay:textInsetSpec];;
+}
+
+@end
+
+
+@implementation PhotoWithOutsetIconOverlay
+
+ (NSString *)title
+{
+  return @"Photo with outset icon overlay";
+}
+
+- (instancetype)init
+{
+  self = [super init];
+  
+  if (self) {
+    _photoNode = [[ASNetworkImageNode alloc] init];
+    _photoNode.URL = [NSURL URLWithString:@"http://asyncdisplaykit.org/static/images/layout-examples-photo-with-outset-icon-overlay-photo.png"];
+    
+    _iconNode = [[ASNetworkImageNode alloc] init];
+    _iconNode.URL = [NSURL URLWithString:@"http://asyncdisplaykit.org/static/images/layout-examples-photo-with-outset-icon-overlay-icon.png"];
+    
+    [_iconNode setImageModificationBlock:^UIImage *(UIImage *image) {   // FIXME: in framework autocomplete for setImageModificationBlock line seems broken
+      CGSize profileImageSize = CGSizeMake(60, 60);
+      return [image makeCircularImageWithSize:profileImageSize withBorderWidth:10];
+    }];
+  }
+  
+  return self;
+}
+
+- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
+{
+  _iconNode.style.preferredSize = CGSizeMake(40, 40);
+  _iconNode.style.layoutPosition = CGPointMake(150, 0);
+  
+  _photoNode.style.preferredSize = CGSizeMake(150, 150);
+  _photoNode.style.layoutPosition = CGPointMake(40 / 2.0, 40 / 2.0);
+  
+  ASAbsoluteLayoutSpec *absoluteSpec = [ASAbsoluteLayoutSpec absoluteLayoutSpecWithChildren:@[_photoNode, _iconNode]];
+  
+  // ASAbsoluteLayoutSpec's .sizing property recreates the behavior of ASDK Layout API 1.0's "ASStaticLayoutSpec"
+  absoluteSpec.sizing = ASAbsoluteLayoutSpecSizingSizeToFit;
+  
+  return absoluteSpec;
+}
+
+
+
+@end
+
+
+@implementation FlexibleSeparatorSurroundingContent
+
+ (NSString *)title
+{
+  return @"Top and bottom cell separator lines";
+}
+
+ (NSString *)descriptionTitle
+{
+  return @"try rotating me!";
+}
+
+- (instancetype)init
+{
+  self = [super init];
+  
+  if (self) {
+    self.backgroundColor = [UIColor whiteColor];
+
+    _topSeparator = [[ASImageNode alloc] init];
+    _topSeparator.image = [UIImage as_resizableRoundedImageWithCornerRadius:1.0 cornerColor:[UIColor blackColor] fillColor:[UIColor blackColor]];
+    
+    _textNode = [[ASTextNode alloc] init];
+    _textNode.attributedText = [NSAttributedString attributedStringWithString:@"this is a long text node"
+                                                                     fontSize:16
+                                                                        color:[UIColor blackColor]];
+    
+    _bottomSeparator = [[ASImageNode alloc] init];
+    _bottomSeparator.image = [UIImage as_resizableRoundedImageWithCornerRadius:1.0 cornerColor:[UIColor blackColor] fillColor:[UIColor blackColor]];
+  }
+  
+  return self;
+}
+
+- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
+{
+  _topSeparator.style.flexGrow = 1.0;
+  _bottomSeparator.style.flexGrow = 1.0;
+  _textNode.style.alignSelf = ASStackLayoutAlignSelfCenter;
+  
+  ASStackLayoutSpec *verticalStackSpec = [ASStackLayoutSpec verticalStackLayoutSpec];
+  verticalStackSpec.spacing = 20;
+  verticalStackSpec.justifyContent = ASStackLayoutJustifyContentCenter;
+  verticalStackSpec.children = @[_topSeparator, _textNode, _bottomSeparator];
+
+  return [ASInsetLayoutSpec insetLayoutSpecWithInsets:UIEdgeInsetsMake(60, 0, 60, 0) child:verticalStackSpec];
+}
+
+@end
+
+@implementation LayoutExampleNode
+
+ (NSString *)title
+{
+  NSAssert(NO, @"All layout example nodes must provide a title!");
+  return nil;
+}
+
+ (NSString *)descriptionTitle
+{
+  return nil;
+}
+
+- (instancetype)init
+{
+  self = [super init];
+  if (self) {
+    self.automaticallyManagesSubnodes = YES;
+    self.backgroundColor = [UIColor whiteColor];
+  }
+  return self;
+}
+
+@end
+
--- a/examples/LayoutSpecExamples/Sample/LayoutExampleViewController.h
+++ b/examples/LayoutSpecExamples/Sample/LayoutExampleViewController.h
@@ -0,0 +1,16 @@
+//
+//  LayoutExampleViewController.h
+//  Sample
+//
+//  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>
+
+@interface LayoutExampleViewController : ASViewController
+- (instancetype)initWithLayoutExampleClass:(Class)layoutExampleClass NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithNode:(ASDisplayNode *)node NS_UNAVAILABLE;
+@end
--- a/examples/LayoutSpecExamples/Sample/LayoutExampleViewController.m
+++ b/examples/LayoutSpecExamples/Sample/LayoutExampleViewController.m
@@ -0,0 +1,48 @@
+//
+//  LayoutExampleViewController.m
+//  Sample
+//
+//  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 "LayoutExampleViewController.h"
+#import "LayoutExampleNodes.h"
+
+@interface LayoutExampleViewController ()
+@property (nonatomic, strong) LayoutExampleNode *customNode;
+@end
+
+@implementation LayoutExampleViewController
+
+- (instancetype)initWithLayoutExampleClass:(Class)layoutExampleClass
+{
+  NSAssert([layoutExampleClass isSubclassOfClass:[LayoutExampleNode class]], @"Must pass a subclass of LayoutExampleNode.");
+  
+  self = [super initWithNode:[ASDisplayNode new]];
+  
+  if (self) {
+    self.title = @"Layout Example";
+    
+    _customNode = [layoutExampleClass new];
+    [self.node addSubnode:_customNode];
+    
+    BOOL needsOnlyYCentering = [layoutExampleClass isEqual:[HeaderWithRightAndLeftItems class]] ||
+                               [layoutExampleClass isEqual:[FlexibleSeparatorSurroundingContent class]];
+                               
+    self.node.backgroundColor = needsOnlyYCentering ? [UIColor lightGrayColor] : [UIColor whiteColor];
+    
+    __weak __typeof(self) weakself = self;
+    self.node.layoutSpecBlock = ^ASLayoutSpec*(__kindof ASDisplayNode * _Nonnull node, ASSizeRange constrainedSize) {
+      return [ASCenterLayoutSpec centerLayoutSpecWithCenteringOptions:needsOnlyYCentering ? ASCenterLayoutSpecCenteringY : ASCenterLayoutSpecCenteringXY
+                                                        sizingOptions:ASCenterLayoutSpecSizingOptionMinimumXY
+                                                                child:weakself.customNode];
+      };
+  }
+  
+  return self;
+}
+
+@end
--- a/examples/LayoutSpecExamples/Sample/OverviewCellNode.h
+++ b/examples/LayoutSpecExamples/Sample/OverviewCellNode.h
@@ -0,0 +1,20 @@
+//
+//  OverviewCellNode.h
+//  Sample
+//
+//  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>
+
+@interface OverviewCellNode : ASCellNode
+
+@property (nonatomic, strong) Class layoutExampleClass;
+
+- (instancetype)initWithLayoutExampleClass:(Class)layoutExampleClass NS_DESIGNATED_INITIALIZER;
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
--- a/examples/LayoutSpecExamples/Sample/OverviewCellNode.m
+++ b/examples/LayoutSpecExamples/Sample/OverviewCellNode.m
@@ -0,0 +1,53 @@
+//
+//  OverviewCellNode.m
+//  Sample
+//
+//  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 "OverviewCellNode.h"
+#import "LayoutExampleNodes.h"
+#import "Utilities.h"
+
+@interface OverviewCellNode ()
+@property (nonatomic, strong) ASTextNode *titleNode;
+@property (nonatomic, strong) ASTextNode *descriptionNode;
+@end
+
+@implementation OverviewCellNode
+
+- (instancetype)initWithLayoutExampleClass:(Class)layoutExampleClass
+{
+    self = [super init];
+    if (self) {
+      self.automaticallyManagesSubnodes = YES;
+      
+      _layoutExampleClass = layoutExampleClass;
+      
+      _titleNode = [[ASTextNode alloc] init];
+      _titleNode.attributedText = [NSAttributedString attributedStringWithString:[layoutExampleClass title]
+                                                                  fontSize:16
+                                                                     color:[UIColor blackColor]];
+  
+      _descriptionNode = [[ASTextNode alloc] init];
+      _descriptionNode.attributedText = [NSAttributedString attributedStringWithString:[layoutExampleClass descriptionTitle]
+                                                                              fontSize:12
+                                                                                 color:[UIColor lightGrayColor]];
+   }
+    return self;
+}
+
+- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
+{
+    ASStackLayoutSpec *verticalStackSpec = [ASStackLayoutSpec verticalStackLayoutSpec];
+    verticalStackSpec.alignItems = ASStackLayoutAlignItemsStart;
+    verticalStackSpec.spacing = 5.0;
+    verticalStackSpec.children = @[self.titleNode, self.descriptionNode];
+    
+    return [ASInsetLayoutSpec insetLayoutSpecWithInsets:UIEdgeInsetsMake(10, 16, 10, 10) child:verticalStackSpec];
+}
+
+@end
--- a/examples/LayoutSpecExamples/Sample/OverviewViewController.h
+++ b/examples/LayoutSpecExamples/Sample/OverviewViewController.h
@@ -0,0 +1,16 @@
+//
+//  OverviewViewController.h
+//  Sample
+//
+//  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>
+
+
+@interface OverviewViewController : ASViewController
+
+@end
--- a/examples/LayoutSpecExamples/Sample/OverviewViewController.m
+++ b/examples/LayoutSpecExamples/Sample/OverviewViewController.m
@@ -0,0 +1,75 @@
+//
+//  OverviewViewController.m
+//  Sample
+//
+//  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 "OverviewViewController.h"
+#import "LayoutExampleNodes.h"
+#import "LayoutExampleViewController.h"
+#import "OverviewCellNode.h"
+
+@interface OverviewViewController () <ASTableDelegate, ASTableDataSource>
+@property (nonatomic, strong) NSArray *layoutExamples;
+@property (nonatomic, strong) ASTableNode *tableNode;
+@end
+
+@implementation OverviewViewController
+
+#pragma mark - Lifecycle Methods
+
+- (instancetype)init
+{
+  _tableNode = [ASTableNode new];
+  self = [super initWithNode:_tableNode];
+  
+  if (self) {
+    self.title = @"Layout Examples";
+    self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];
+    
+    _tableNode.delegate = self;
+    _tableNode.dataSource = self;
+    
+    _layoutExamples = @[[HeaderWithRightAndLeftItems class],
+                        [PhotoWithInsetTextOverlay class],
+                        [PhotoWithOutsetIconOverlay class],
+                        [FlexibleSeparatorSurroundingContent class]];
+  }
+  
+  return self;
+}
+
+- (void)viewWillAppear:(BOOL)animated
+{
+  [super viewWillAppear:animated];
+  
+  NSIndexPath *indexPath = _tableNode.indexPathForSelectedRow;
+  if (indexPath != nil) {
+    [_tableNode deselectRowAtIndexPath:indexPath animated:YES];
+  }
+}
+
+#pragma mark - ASTableDelegate, ASTableDataSource
+
+- (NSInteger)tableNode:(ASTableNode *)tableNode numberOfRowsInSection:(NSInteger)section
+{
+  return [_layoutExamples count];
+}
+
+- (ASCellNode *)tableNode:(ASTableNode *)tableNode nodeForRowAtIndexPath:(NSIndexPath *)indexPath
+{
+  return [[OverviewCellNode alloc] initWithLayoutExampleClass:_layoutExamples[indexPath.row]];
+}
+
+- (void)tableNode:(ASTableNode *)tableNode didSelectRowAtIndexPath:(NSIndexPath *)indexPath
+{
+  Class layoutExampleClass = [[tableNode nodeForRowAtIndexPath:indexPath] layoutExampleClass];
+  LayoutExampleViewController *detail = [[LayoutExampleViewController alloc] initWithLayoutExampleClass:layoutExampleClass];
+  [self.navigationController pushViewController:detail animated:YES];
+}
+
+@end
--- a/examples/LayoutSpecExamples/Sample/Utilities.h
+++ b/examples/LayoutSpecExamples/Sample/Utilities.h
@@ -0,0 +1,25 @@
+//
+//  Utilities.h
+//  Sample
+//
+//  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 <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+@interface UIColor (Additions)
+ (UIColor *)darkBlueColor;
+ (UIColor *)lightBlueColor;
+@end
+
+@interface UIImage (Additions)
+- (UIImage *)makeCircularImageWithSize:(CGSize)size withBorderWidth:(CGFloat)width;
+@end
+
+@interface NSAttributedString (Additions)
+ (NSAttributedString *)attributedStringWithString:(NSString *)string fontSize:(CGFloat)size color:(UIColor *)color;
+@end
--- a/examples/LayoutSpecExamples/Sample/Utilities.m
+++ b/examples/LayoutSpecExamples/Sample/Utilities.m
@@ -0,0 +1,85 @@
+//
+//  Utilities.m
+//  Sample
+//
+//  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 "Utilities.h"
+
+#define StrokeRoundedImages 0
+
+@implementation UIColor (Additions)
+
+ (UIColor *)darkBlueColor
+{
+  return [UIColor colorWithRed:18.0/255.0 green:86.0/255.0 blue:136.0/255.0 alpha:1.0];
+}
+
+ (UIColor *)lightBlueColor
+{
+  return [UIColor colorWithRed:0.0 green:122.0/255.0 blue:1.0 alpha:1.0];
+}
+
+@end
+
+@implementation UIImage (Additions)
+
+- (UIImage *)makeCircularImageWithSize:(CGSize)size withBorderWidth:(CGFloat)width
+{
+  // make a CGRect with the image's size
+  CGRect circleRect = (CGRect) {CGPointZero, size};
+  
+  // begin the image context since we're not in a drawRect:
+  UIGraphicsBeginImageContextWithOptions(circleRect.size, NO, 0);
+  
+  // create a UIBezierPath circle
+  UIBezierPath *circle = [UIBezierPath bezierPathWithRoundedRect:circleRect cornerRadius:circleRect.size.width/2];
+  
+  // clip to the circle
+  [circle addClip];
+  
+  [[UIColor whiteColor] set];
+  [circle fill];
+  
+  // draw the image in the circleRect *AFTER* the context is clipped
+  [self drawInRect:circleRect];
+  
+  // create a border (for white background pictures)
+  if (width > 0) {
+    circle.lineWidth = width;
+    [[UIColor whiteColor] set];
+    [circle stroke];
+  }
+  
+  // get an image from the image context
+  UIImage *roundedImage = UIGraphicsGetImageFromCurrentImageContext();
+  
+  // end the image context since we're not in a drawRect:
+  UIGraphicsEndImageContext();
+  
+  return roundedImage;
+}
+
+@end
+
+@implementation NSAttributedString (Additions)
+
+ (NSAttributedString *)attributedStringWithString:(NSString *)string fontSize:(CGFloat)size color:(nullable UIColor *)color
+{
+  if (string == nil) {
+    return nil;
+  }
+  
+  NSDictionary *attributes = @{NSForegroundColorAttributeName: color ? : [UIColor blackColor],
+                               NSFontAttributeName: [UIFont boldSystemFontOfSize:size]};
+  NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:string];
+  [attributedString addAttributes:attributes range:NSMakeRange(0, string.length)];
+  
+  return attributedString;
+}
+
+@end
--- a/examples/LayoutSpecExamples/Sample/main.m
+++ b/examples/LayoutSpecExamples/Sample/main.m
@@ -0,0 +1,25 @@
+//
+//  main.m
+//  Sample
+//
+//  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.
+//
+//  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]));
+    }
+}