Support editing in table view and collection view

AsyncDisplayKit/Details/ASLayoutController.h

@@ -0,0 +1,42 @@
+//  Copyright 2004-present Facebook. All Rights Reserved.
+
+#import <UIKit/UIKit.h>
+
+typedef struct {
+  CGFloat leadingBufferScreenfuls;
+  CGFloat trailingBufferScreenfuls;
+} ASRangeTuningParameters;
+
+typedef NS_ENUM(NSInteger, ASScrollDirection) {
+  ASScrollDirectionNone,
+  ASScrollDirectionRight,
+  ASScrollDirectionLeft,
+  ASScrollDirectionUp,
+  ASScrollDirectionDown,
+};
+
+@protocol ASLayoutController <NSObject>
+
+/**
+ * Tuning parameters for the working range.
+ *
+ * Defaults to a trailing buffer of one screenful and a leading buffer of two screenfuls.
+ */
+@property (nonatomic, assign) ASRangeTuningParameters tuningParameters;
+
+- (void)insertNodesAtIndexPaths:(NSArray *)indexPaths withSizes:(NSArray *)nodeSizes;
+
+- (void)deleteNodesAtIndexPaths:(NSArray *)indexPaths;
+
+- (void)insertSectionsAtIndexSet:(NSIndexSet *)indexSet;
+
+- (void)deleteSectionsAtIndexSet:(NSIndexSet *)indexSet;
+
+- (void)setVisibleNodeIndexPaths:(NSArray *)indexPaths;
+
+- (BOOL)shouldUpdateWorkingRangesForVisibleIndexPath:(NSArray *)indexPath
+                                        viewportSize:(CGSize)viewportSize;
+
+- (NSSet *)workingRangeIndexPathsForScrolling:(enum ASScrollDirection)scrollDirection
+                                 viewportSize:(CGSize)viewportSize;
+@end