Initial commit for AsyncDisplayKitOverview

examples/AsyncDisplayKitOverview/Sample/Node Containers/OverviewASCollectionNode.m

@@ -0,0 +1,63 @@
+//
+//  OverviewASCollectionViewNode.m
+//  AsyncDisplayKitOverview
+//
+//  Created by Michael Schneider on 4/17/16.
+//  Copyright © 2016 Facebook. All rights reserved.
+//
+
+#import "OverviewASCollectionNode.h"
+
+#import <AsyncDisplayKit/AsyncDisplayKit.h>
+
+@interface OverviewASCollectionNode () <ASCollectionDataSource, ASCollectionDelegate>
+@property (nonatomic, strong) ASCollectionNode *node;
+@end
+
+@implementation OverviewASCollectionNode
+
+#pragma mark - Lifecycle
+
+- (instancetype)init
+{
+    self = [super init];
+    if (self == nil) { return self; }
+    
+    UICollectionViewFlowLayout *flowLayout = [UICollectionViewFlowLayout new];
+    _node = [[ASCollectionNode alloc] initWithCollectionViewLayout:flowLayout];
+    _node.dataSource = self;
+    _node.delegate = self;
+    [self addSubnode:_node];;
+    
+    return self;
+}
+
+- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
+{
+    self.node.sizeRange = ASRelativeSizeRangeMakeWithExactCGSize(constrainedSize.max);
+    return [ASStaticLayoutSpec staticLayoutSpecWithChildren:@[self.node]];
+}
+
+#pragma mark - <ASCollectionDataSource, ASCollectionDelegate>
+
+- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
+{
+    return 100;
+}
+
+- (ASCellNodeBlock)collectionView:(ASCollectionView *)collectionView nodeBlockForItemAtIndexPath:(NSIndexPath *)indexPath
+{
+    return ^{
+        ASTextCellNode *cellNode = [ASTextCellNode new];
+        cellNode.backgroundColor = [UIColor lightGrayColor];
+        cellNode.text = [NSString stringWithFormat:@"Row: %ld", indexPath.row];
+        return cellNode;
+    };
+}
+
+- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
+{
+    return CGSizeMake(100, 100);
+}
+
+@end