Merge pull request #177 from chiahsien/revert-175-master

Revert "separation footer and header "

CHTCollectionViewWaterfallLayout.m

@@ -428,8 +428,7 @@ - (NSArray *)layoutAttributesForElementsInRect:(CGRect)rect {
   NSInteger i;
   NSInteger begin = 0, end = self.unionRects.count;
   NSMutableDictionary *cellAttrDict = [NSMutableDictionary dictionary];
-  NSMutableDictionary *supplHeaderAttrDict = [NSMutableDictionary dictionary];
-  NSMutableDictionary *supplFooterAttrDict = [NSMutableDictionary dictionary];
+  NSMutableDictionary *supplAttrDict = [NSMutableDictionary dictionary];
   NSMutableDictionary *decorAttrDict = [NSMutableDictionary dictionary];
 
   for (i = 0; i < self.unionRects.count; i++) {
@@ -449,11 +448,7 @@ - (NSArray *)layoutAttributesForElementsInRect:(CGRect)rect {
     if (CGRectIntersectsRect(rect, attr.frame)) {
       switch (attr.representedElementCategory) {
         case UICollectionElementCategorySupplementaryView:
-          if ([attr.representedElementKind isEqualToString:CHTCollectionElementKindSectionHeader]) {
-            supplHeaderAttrDict[attr.indexPath] = attr;
-          } else if ([attr.representedElementKind isEqualToString:CHTCollectionElementKindSectionFooter]) {
-            supplFooterAttrDict[attr.indexPath] = attr;
-          }
+          supplAttrDict[attr.indexPath] = attr;
           break;
         case UICollectionElementCategoryDecorationView:
           decorAttrDict[attr.indexPath] = attr;
@@ -465,8 +460,7 @@ - (NSArray *)layoutAttributesForElementsInRect:(CGRect)rect {
     }
   }
 
-  NSArray *result = [cellAttrDict.allValues arrayByAddingObjectsFromArray:supplHeaderAttrDict.allValues];
-  result = [result arrayByAddingObjectsFromArray:supplFooterAttrDict.allValues];
+  NSArray *result = [cellAttrDict.allValues arrayByAddingObjectsFromArray:supplAttrDict.allValues];
   result = [result arrayByAddingObjectsFromArray:decorAttrDict.allValues];
   return result;
 }