From c42d41fb4c49d9fc5c36aa7120568d1a76d7b68c Mon Sep 17 00:00:00 2001
From: Huy Nguyen <allforone1511@gmail.com>
Date: Tue, 11 Nov 2014 19:53:10 +0200
Subject: [PATCH] Provide ASCollectionView::calculatedSizeForNodeAtIndexPath:,
 to be used in custom UICollectionViewLayouts.

---
 AsyncDisplayKit/ASCollectionView.h | 7 +++++++
 AsyncDisplayKit/ASCollectionView.m | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/AsyncDisplayKit/ASCollectionView.h b/AsyncDisplayKit/ASCollectionView.h
index 6314da2604..abf25ec809 100644
--- a/AsyncDisplayKit/ASCollectionView.h
+++ b/AsyncDisplayKit/ASCollectionView.h
@@ -67,6 +67,13 @@
  */
 - (void)appendNodesWithIndexPaths:(NSArray *)indexPaths;
 
+/**
+ * Query the sized node at `indexPath` for its calculatedSize.
+ *
+ * @param indexPath The index path for the node of interest.
+ */
+- (CGSize)calculatedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath;
+
 @end
 
 
diff --git a/AsyncDisplayKit/ASCollectionView.m b/AsyncDisplayKit/ASCollectionView.m
index 04ec601cdf..aa20fe36bd 100644
--- a/AsyncDisplayKit/ASCollectionView.m
+++ b/AsyncDisplayKit/ASCollectionView.m
@@ -170,6 +170,11 @@ static BOOL _isInterceptedSelector(SEL sel)
   [_rangeController appendNodesWithIndexPaths:indexPaths];
 }
 
+- (CGSize)calculatedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath
+{
+  return [_rangeController calculatedSizeForNodeAtIndexPath:indexPath];
+}
+
 #pragma mark Assertions.
 
 - (void)throwUnimplementedException