Revert "Route setDelegate: to setAsyncDelegate: (#3007)" (#3023)

This reverts commit 5c8818d.

Author: Adlai Holler

AsyncDisplayKit/ASCollectionView.h

@@ -125,9 +125,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface ASCollectionView (Deprecated)
 
-@property (nonatomic, weak) id<UICollectionViewDelegate> delegate ASDISPLAYNODE_DEPRECATED_MSG("Use ASCollectionNode.delegate instead. If you REALLY want to use this, cast to a UICollectionView but don't rely on the return value.");
-@property (nonatomic, weak) id<UICollectionViewDataSource> dataSource ASDISPLAYNODE_DEPRECATED_MSG("Use ASCollectionNode.dataSource instead. If you REALLY want to use this, cast to a UICollectionView but don't rely on the return value.");
-
 /**
  * The object that acts as the asynchronous delegate of the collection view
  *

AsyncDisplayKit/ASCollectionView.mm

@@ -367,10 +367,8 @@ - (void)setDataSource:(id<UICollectionViewDataSource>)dataSource
 
 - (void)setDelegate:(id<UICollectionViewDelegate>)delegate
 {
-  // The compiler will prevent users from calling this,
-  // but we will automatically route to @c asyncDelegate
-  // to support interop with frameworks like TLYShyNavBar.
-  self.asyncDelegate = (id<ASCollectionDelegate>)delegate;
+  // Our UIScrollView superclass sets its delegate to nil on dealloc. Only assert if we get a non-nil value here. We also allow this when we're doing interop.
+  ASDisplayNodeAssert(_asyncDelegateFlags.interop || delegate == nil, @"ASCollectionView uses asyncDelegate, not UICollectionView's delegate property.");
 }
 
 - (void)proxyTargetHasDeallocated:(ASDelegateProxy *)proxy

AsyncDisplayKit/ASTableView.h

@@ -69,9 +69,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface ASTableView (Deprecated)
 
-@property (nonatomic, weak) id<UITableViewDelegate> delegate ASDISPLAYNODE_DEPRECATED_MSG("Use ASTableNode.delegate instead. If you REALLY want to use this, cast to UITableView but don't rely on the return value.");
-@property (nonatomic, weak) id<UITableViewDataSource> dataSource ASDISPLAYNODE_DEPRECATED_MSG("Use ASTableNode.dataSource instead. If you REALLY want to use this, cast to UITableView but don't rely on the return value.");
-
 @property (nonatomic, weak) id<ASTableDelegate>   asyncDelegate ASDISPLAYNODE_DEPRECATED_MSG("Use ASTableNode's .delegate property instead.");
 @property (nonatomic, weak) id<ASTableDataSource> asyncDataSource ASDISPLAYNODE_DEPRECATED_MSG("Use ASTableNode .dataSource property instead.");
 

AsyncDisplayKit/ASTableView.mm

@@ -337,10 +337,8 @@ - (void)setDataSource:(id<UITableViewDataSource>)dataSource
 
 - (void)setDelegate:(id<UITableViewDelegate>)delegate
 {
-  // The compiler will prevent users from calling this,
-  // but we will automatically route to @c asyncDelegate
-  // to support interop with frameworks like TLYShyNavBar.
-  self.asyncDelegate = (id<ASTableDelegate>)delegate;
+  // Our UIScrollView superclass sets its delegate to nil on dealloc. Only assert if we get a non-nil value here.
+  ASDisplayNodeAssert(delegate == nil, @"ASTableView uses asyncDelegate, not UITableView's delegate property.");
 }
 
 - (id<ASTableDataSource>)asyncDataSource
@@ -357,7 +355,7 @@ - (void)setAsyncDataSource:(id<ASTableDataSource>)asyncDataSource
   // the (common) case of nilling the asyncDataSource in the ViewController's dealloc. In this case our _asyncDataSource
   // will return as nil (ARC magic) even though the _proxyDataSource still exists. It's really important to hold a strong
   // reference to the old dataSource in this case because calls to ASTableViewProxy will start failing and cause crashes.
-  NS_VALID_UNTIL_END_OF_SCOPE id oldDataSource = super.dataSource;
+  NS_VALID_UNTIL_END_OF_SCOPE id oldDataSource = self.dataSource;
 
   if (asyncDataSource == nil) {
     _asyncDataSource = nil;

examples/CustomCollectionView-Swift/Sample/MosaicCollectionViewLayout.swift

@@ -228,6 +228,17 @@ class MosaicCollectionViewLayoutInspector: NSObject, ASCollectionViewLayoutInspe
     return ASSizeRange.init(min: CGSize.zero, max: layout._headerSizeForSection(section: atIndexPath.section))
   }
 
+  /**
+   * Asks the inspector for the number of supplementary sections in the collection view for the given kind.
+   */
+  func collectionView(_ collectionView: ASCollectionView, numberOfSectionsForSupplementaryNodeOfKind kind: String) -> UInt {
+    if (kind == UICollectionElementKindSectionHeader) {
+      return UInt((collectionView.dataSource?.numberOfSections!(in: collectionView))!)
+    } else {
+      return 0
+    }
+  }
+  
   /**
    * Asks the inspector for the number of supplementary views for the given kind in the specified section.
    */
@@ -240,6 +251,6 @@ class MosaicCollectionViewLayoutInspector: NSObject, ASCollectionViewLayoutInspe
   }
 
   func scrollableDirections() -> ASScrollDirection {
-    return ASScrollDirectionVerticalDirections
+    return ASScrollDirectionVerticalDirections;
   }
 }