Add 'submodules/AsyncDisplayKit/' from commit '02bedc12816e251ad71777f9d2578329b6d2bef6'

git-subtree-dir: submodules/AsyncDisplayKit
git-subtree-mainline: d06f423e0e
git-subtree-split: 02bedc1281

submodules/AsyncDisplayKit/examples/ASViewController/Sample/ViewController.m

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+//
+//  ViewController.m
+//  Texture
+//
+//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
+//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
+//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
+//
+
+#import "ViewController.h"
+#import <AsyncDisplayKit/AsyncDisplayKit.h>
+
+#import "DetailViewController.h"
+
+
+@interface ViewController () <ASTableDataSource, ASTableDelegate>
+
+@property (nonatomic, copy) NSArray *imageCategories;
+@property (nonatomic, strong, readonly) ASTableNode *tableNode;
+
+@end
+
+
+@implementation ViewController
+
+#pragma mark - Lifecycle
+
+- (instancetype)init
+{
+    self = [super initWithNode:[ASTableNode new]];
+    if (self == nil) { return self; }
+    
+    _imageCategories = @[@"abstract", @"animals", @"business", @"cats", @"city", @"food", @"nightlife", @"fashion", @"people", @"nature", @"sports", @"technics", @"transport"];
+    
+    return self;
+}
+
+- (void)dealloc
+{
+    self.node.delegate = nil;
+    self.node.dataSource = nil;
+}
+
+
+#pragma mark - UIViewController
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+    
+    self.title = @"Image Categories";
+    
+    self.node.delegate = self;
+    self.node.dataSource = self;
+}
+
+- (void)viewWillAppear:(BOOL)animated
+{
+    [super viewWillAppear:animated];
+    
+    [self.node deselectRowAtIndexPath:self.node.indexPathForSelectedRow animated:YES];
+}
+
+
+#pragma mark - ASTableDataSource / ASTableDelegate
+
+- (NSInteger)tableNode:(ASTableNode *)tableNode numberOfRowsInSection:(NSInteger)section
+{
+    return self.imageCategories.count;
+}
+
+- (ASCellNodeBlock)tableNode:(ASTableNode *)tableNode nodeBlockForRowAtIndexPath:(NSIndexPath *)indexPath
+{
+    // As the block is executed on a background thread we need to cache the image category string outside
+    NSString *imageCategory = self.imageCategories[indexPath.row];
+    return ^{
+        ASTextCellNode *textCellNode = [ASTextCellNode new];
+        textCellNode.text = [imageCategory capitalizedString];
+        return textCellNode;
+    };
+}
+
+- (void)tableNode:(ASTableNode *)tableNode didSelectRowAtIndexPath:(NSIndexPath *)indexPath
+{
+    NSString *imageCategory = self.imageCategories[indexPath.row];
+    DetailRootNode *detailRootNode = [[DetailRootNode alloc] initWithImageCategory:imageCategory];
+    DetailViewController *detailViewController = [[DetailViewController alloc] initWithNode:detailRootNode];
+    detailViewController.title = [imageCategory capitalizedString];
+    [self.navigationController pushViewController:detailViewController animated:YES];
+}
+
+@end