clean up ASCollectionView example project (#2384)

examples/ASCollectionView/Sample/ItemNode.m

@@ -22,10 +22,12 @@
 - (instancetype)initWithString:(NSString *)string
 {
   self = [super init];
+  
   if (self != nil) {
     self.text = string;
     [self updateBackgroundColor];
   }
+  
   return self;
 }
 
@@ -43,12 +45,14 @@
 - (void)setSelected:(BOOL)selected
 {
   [super setSelected:selected];
+  
   [self updateBackgroundColor];
 }
 
 - (void)setHighlighted:(BOOL)highlighted
 {
   [super setHighlighted:highlighted];
+  
   [self updateBackgroundColor];
 }
 

examples/ASCollectionView/Sample/PresentingViewController.m

@@ -30,7 +30,10 @@
 {
   [super viewDidLoad];
   
-  self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Push Details" style:UIBarButtonItemStylePlain target:self action:@selector(pushNewViewController)];
+  self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Push Details"
+                                                                            style:UIBarButtonItemStylePlain
+                                                                           target:self
+                                                                           action:@selector(pushNewViewController)];
 }
 
 - (void)pushNewViewController

examples/ASCollectionView/Sample/SupplementaryNode.m

@@ -32,12 +32,14 @@ static CGFloat kInsets = 15.0;
 - (instancetype)initWithText:(NSString *)text
 {
   self = [super init];
+  
   if (self != nil) {
     _textNode = [[ASTextNode alloc] init];
     _textNode.attributedText = [[NSAttributedString alloc] initWithString:text
                                                                  attributes:[self textAttributes]];
     [self addSubnode:_textNode];
   }
+  
   return self;
 }
 
@@ -47,6 +49,7 @@ static CGFloat kInsets = 15.0;
   center.centeringOptions = ASCenterLayoutSpecCenteringXY;
   center.child = self.textNode;
   UIEdgeInsets insets = UIEdgeInsetsMake(kInsets, kInsets, kInsets, kInsets);
+  
   return [ASInsetLayoutSpec insetLayoutSpecWithInsets:insets child:center];
 }
 

examples/ASCollectionView/Sample/ViewController.m

@@ -21,18 +21,17 @@
 #import "SupplementaryNode.h"
 #import "ItemNode.h"
 
-@interface ViewController ()
-@property (nonatomic, strong) ASCollectionView *collectionView;
-@property (nonatomic, strong) NSArray *data;
-@end
-
 @interface ViewController () <ASCollectionDataSource, ASCollectionViewDelegateFlowLayout>
 
+@property (nonatomic, strong) ASCollectionView *collectionView;
+@property (nonatomic, strong) NSArray *data;
+
 @end
 
-
 @implementation ViewController
 
+#pragma mark - Lifecycle
+
 - (void)dealloc
 {
   self.collectionView.asyncDataSource = nil;
@@ -52,20 +51,24 @@
   // This method is deprecated because we reccommend using ASCollectionNode instead of ASCollectionView.
   // This functionality & example project remains for users who insist on using ASCollectionView.
   self.collectionView = [[ASCollectionView alloc] initWithFrame:self.view.bounds collectionViewLayout:layout];
-  self.collectionView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
   self.collectionView.asyncDataSource = self;
   self.collectionView.asyncDelegate = self;
+  
+  self.collectionView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
   self.collectionView.backgroundColor = [UIColor whiteColor];
   
   // This method is deprecated because we reccommend using ASCollectionNode instead of ASCollectionView.
   // This functionality & example project remains for users who insist on using ASCollectionView.
   [self.collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionHeader];
   [self.collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionFooter];
+  
   [self.view addSubview:self.collectionView];
   
 #if !SIMULATE_WEB_RESPONSE
   self.navigationItem.leftItemsSupplementBackButton = YES;
-  self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(reloadTapped)];
+  self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh
+                                                                                        target:self
+                                                                                        action:@selector(reloadTapped)];
 #endif
 
 #if SIMULATE_WEB_RESPONSE
@@ -94,6 +97,8 @@
 #endif
 }
 
+#pragma mark - Button Actions
+
 - (void)reloadTapped
 {
   // This method is deprecated because we reccommend using ASCollectionNode instead of ASCollectionView.
@@ -101,8 +106,7 @@
   [self.collectionView reloadData];
 }
 
-#pragma mark -
-#pragma mark ASCollectionView data source.
+#pragma mark - ASCollectionView Data Source
 
 - (ASCellNodeBlock)collectionView:(ASCollectionView *)collectionView nodeBlockForItemAtIndexPath:(NSIndexPath *)indexPath;
 {