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# Conflicts: # AsyncDisplayKit.xcodeproj/project.pbxproj # AsyncDisplayKit.xcodeproj/xcshareddata/xcschemes/AsyncDisplayKit.xcscheme # Source/ASDisplayNode.mm # Source/ASEditableTextNode.h # Source/ASImageNode.mm # Source/ASMapNode.h # Source/ASMapNode.mm # Source/Base/ASAssert.m # Source/Details/ASPhotosFrameworkImageRequest.h # Source/Details/ASPhotosFrameworkImageRequest.m # Source/Layout/ASLayoutElement.mm
78 lines
3.6 KiB
Objective-C
78 lines
3.6 KiB
Objective-C
//
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// ASBatchFetching.h
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// Texture
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//
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// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
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// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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#ifndef MINIMAL_ASDK
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#import <UIKit/UIKit.h>
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#import <AsyncDisplayKit/ASScrollDirection.h>
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NS_ASSUME_NONNULL_BEGIN
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@class ASBatchContext;
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@protocol ASBatchFetchingDelegate;
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@protocol ASBatchFetchingScrollView <NSObject>
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- (BOOL)canBatchFetch;
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- (ASBatchContext *)batchContext;
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- (CGFloat)leadingScreensForBatching;
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- (nullable id<ASBatchFetchingDelegate>)batchFetchingDelegate;
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@end
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/**
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@abstract Determine if batch fetching should begin based on the state of the parameters.
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@discussion This method is broken into a category for unit testing purposes and should be used with the ASTableView and
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* ASCollectionView batch fetching API.
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@param scrollView The scroll view that in-flight fetches are happening.
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@param scrollDirection The current scrolling direction of the scroll view.
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@param scrollableDirections The possible scrolling directions of the scroll view.
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@param contentOffset The offset that the scrollview will scroll to.
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@param velocity The velocity of the scroll view (in points) at the moment the touch was released.
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@return Whether or not the current state should proceed with batch fetching.
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*/
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AS_EXTERN BOOL ASDisplayShouldFetchBatchForScrollView(UIScrollView<ASBatchFetchingScrollView> *scrollView,
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ASScrollDirection scrollDirection,
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ASScrollDirection scrollableDirections,
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CGPoint contentOffset,
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CGPoint velocity);
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/**
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@abstract Determine if batch fetching should begin based on the state of the parameters.
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@param context The batch fetching context that contains knowledge about in-flight fetches.
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@param scrollDirection The current scrolling direction of the scroll view.
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@param scrollableDirections The possible scrolling directions of the scroll view.
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@param bounds The bounds of the scrollview.
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@param contentSize The content size of the scrollview.
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@param targetOffset The offset that the scrollview will scroll to.
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@param leadingScreens How many screens in the remaining distance will trigger batch fetching.
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@param visible Whether the view is visible or not.
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@param velocity The velocity of the scroll view (in points) at the moment the touch was released.
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@param delegate The delegate to be consulted if needed.
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@return Whether or not the current state should proceed with batch fetching.
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@discussion This method is broken into a category for unit testing purposes and should be used with the ASTableView and
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* ASCollectionView batch fetching API.
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*/
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AS_EXTERN BOOL ASDisplayShouldFetchBatchForContext(ASBatchContext *context,
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ASScrollDirection scrollDirection,
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ASScrollDirection scrollableDirections,
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CGRect bounds,
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CGSize contentSize,
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CGPoint targetOffset,
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CGFloat leadingScreens,
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BOOL visible,
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CGPoint velocity,
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_Nullable id<ASBatchFetchingDelegate> delegate);
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NS_ASSUME_NONNULL_END
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#endif
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