declare namespace ObjC{
   namespace classes{
      
       export class UICollectionViewLayoutAttributes extends NSObject{ 
            static	layoutAttributesForCellWithIndexPath_(indexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            static	layoutAttributesForSupplementaryViewOfKind_withIndexPath_(elementKind:NSString|NativePointer,indexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            static	layoutAttributesForDecorationViewOfKind_withIndexPath_(decorationViewKind:NSString|NativePointer,indexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	frame():number;
            	setFrame_(frame:number|NativePointer):any;
            	center():number;
            	setCenter_(center:number|NativePointer):any;
            	size():number;
            	setSize_(size:number|NativePointer):any;
            	transform3D():number;
            	setTransform3D_(transform3D:number|NativePointer):any;
            	bounds():number;
            	setBounds_(bounds:number|NativePointer):any;
            	transform():number;
            	setTransform_(transform:number|NativePointer):any;
            	alpha():number;
            	setAlpha_(alpha:number|NativePointer):any;
            	zIndex():number;
            	setZIndex_(zIndex:number|NativePointer):any;
            	isHidden():number;
            	setHidden_(hidden:number|NativePointer):any;
            	indexPath():NSIndexPath;
            	setIndexPath_(indexPath:NSIndexPath|NativePointer):any;
            	representedElementCategory():any;
            	representedElementKind():NSString;
       }
      
       export class UICollectionViewLayoutInvalidationContext extends NSObject{ 
            	invalidateItemsAtIndexPaths_(indexPaths:NativePointer|NativePointer):any;
            	invalidateSupplementaryElementsOfKind_atIndexPaths_(elementKind:NSString|NativePointer,indexPaths:NativePointer|NativePointer):any;
            	invalidateDecorationElementsOfKind_atIndexPaths_(elementKind:NSString|NativePointer,indexPaths:NativePointer|NativePointer):any;
            	invalidateEverything():number;
            	invalidateDataSourceCounts():number;
            	invalidatedItemIndexPaths():NativePointer;
            	invalidatedSupplementaryIndexPaths():NativePointer;
            	invalidatedDecorationIndexPaths():NativePointer;
            	contentOffsetAdjustment():number;
            	setContentOffsetAdjustment_(contentOffsetAdjustment:number|NativePointer):any;
            	contentSizeAdjustment():number;
            	setContentSizeAdjustment_(contentSizeAdjustment:number|NativePointer):any;
            	previousIndexPathsForInteractivelyMovingItems():NativePointer;
            	targetIndexPathsForInteractivelyMovingItems():NativePointer;
            	interactiveMovementTarget():number;
       }
      
       export class UICollectionViewUpdateItem extends NSObject{ 
            	indexPathBeforeUpdate():NSIndexPath;
            	indexPathAfterUpdate():NSIndexPath;
            	updateAction():any;
       }
      
       export class UICollectionViewLayout extends NSObject{ 
            	init():UICollectionViewLayout;
            	initWithCoder_(aDecoder:NSCoder|NativePointer):UICollectionViewLayout;
            	invalidateLayout():any;
            	invalidateLayoutWithContext_(context:UICollectionViewLayoutInvalidationContext|NativePointer):any;
            	registerClass_forDecorationViewOfKind_(viewClass:ObjC.Object|NativePointer,elementKind:NSString|NativePointer):any;
            	registerNib_forDecorationViewOfKind_(nib:UINib|NativePointer,elementKind:NSString|NativePointer):any;
            	collectionView():UICollectionView;
            	targetIndexPathForInteractivelyMovingItem_withPosition_(previousIndexPath:NSIndexPath|NativePointer,position:NSObject|NativePointer):NSIndexPath;
            	layoutAttributesForInteractivelyMovingItemAtIndexPath_withTargetPosition_(indexPath:NSIndexPath|NativePointer,position:NSObject|NativePointer):UICollectionViewLayoutAttributes;
            	invalidationContextForInteractivelyMovingItems_withTargetPosition_previousIndexPaths_previousPosition_(targetIndexPaths:NativePointer|NativePointer,targetPosition:NSObject|NativePointer,previousIndexPaths:NativePointer|NativePointer,previousPosition:NSObject|NativePointer):UICollectionViewLayoutInvalidationContext;
            	invalidationContextForEndingInteractiveMovementOfItemsToFinalIndexPaths_previousIndexPaths_movementCancelled_(indexPaths:NativePointer|NativePointer,previousIndexPaths:NativePointer|NativePointer,movementCancelled:number|NativePointer):UICollectionViewLayoutInvalidationContext;
            	prepareForCollectionViewUpdates_(updateItems:NativePointer|NativePointer):any;
            	finalizeCollectionViewUpdates():any;
            	prepareForAnimatedBoundsChange_(oldBounds:NSObject|NativePointer):any;
            	finalizeAnimatedBoundsChange():any;
            	prepareForTransitionToLayout_(newLayout:UICollectionViewLayout|NativePointer):any;
            	prepareForTransitionFromLayout_(oldLayout:UICollectionViewLayout|NativePointer):any;
            	finalizeLayoutTransition():any;
            	initialLayoutAttributesForAppearingItemAtIndexPath_(itemIndexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	finalLayoutAttributesForDisappearingItemAtIndexPath_(itemIndexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	initialLayoutAttributesForAppearingSupplementaryElementOfKind_atIndexPath_(elementKind:NSString|NativePointer,elementIndexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	finalLayoutAttributesForDisappearingSupplementaryElementOfKind_atIndexPath_(elementKind:NSString|NativePointer,elementIndexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	initialLayoutAttributesForAppearingDecorationElementOfKind_atIndexPath_(elementKind:NSString|NativePointer,decorationIndexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	finalLayoutAttributesForDisappearingDecorationElementOfKind_atIndexPath_(elementKind:NSString|NativePointer,decorationIndexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	indexPathsToDeleteForSupplementaryViewOfKind_(elementKind:NSString|NativePointer):NativePointer;
            	indexPathsToDeleteForDecorationViewOfKind_(elementKind:NSString|NativePointer):NativePointer;
            	indexPathsToInsertForSupplementaryViewOfKind_(elementKind:NSString|NativePointer):NativePointer;
            	indexPathsToInsertForDecorationViewOfKind_(elementKind:NSString|NativePointer):NativePointer;
            	prepareLayout():any;
            	layoutAttributesForElementsInRect_(rect:NSObject|NativePointer):NativePointer;
            	layoutAttributesForItemAtIndexPath_(indexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	layoutAttributesForSupplementaryViewOfKind_atIndexPath_(elementKind:NSString|NativePointer,indexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	layoutAttributesForDecorationViewOfKind_atIndexPath_(elementKind:NSString|NativePointer,indexPath:NSIndexPath|NativePointer):UICollectionViewLayoutAttributes;
            	shouldInvalidateLayoutForBoundsChange_(newBounds:NSObject|NativePointer):number;
            	invalidationContextForBoundsChange_(newBounds:NSObject|NativePointer):UICollectionViewLayoutInvalidationContext;
            	shouldInvalidateLayoutForPreferredLayoutAttributes_withOriginalAttributes_(preferredAttributes:UICollectionViewLayoutAttributes|NativePointer,originalAttributes:UICollectionViewLayoutAttributes|NativePointer):number;
            	invalidationContextForPreferredLayoutAttributes_withOriginalAttributes_(preferredAttributes:UICollectionViewLayoutAttributes|NativePointer,originalAttributes:UICollectionViewLayoutAttributes|NativePointer):UICollectionViewLayoutInvalidationContext;
            	targetContentOffsetForProposedContentOffset_withScrollingVelocity_(proposedContentOffset:NSObject|NativePointer,velocity:NSObject|NativePointer):NSObject;
            	targetContentOffsetForProposedContentOffset_(proposedContentOffset:NSObject|NativePointer):NSObject;
            static	layoutAttributesClass():ObjC.Object;
            static	invalidationContextClass():ObjC.Object;
            	collectionViewContentSize():number;
            	developmentLayoutDirection():number;
            	flipsHorizontallyInOppositeLayoutDirection():number;
       }
    }
}