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45 lines
1.4 KiB
Objective-C
45 lines
1.4 KiB
Objective-C
//
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// ASCellNode+Internal.h
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// AsyncDisplayKit
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//
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// Created by Max Gu on 2/19/16.
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#import "ASCellNode.h"
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@protocol ASCellNodeLayoutDelegate <NSObject>
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/**
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* Notifies the delegate that the specified cell node has done a relayout.
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* The notification is done on main thread.
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*
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* This will not be called due to measurement passes before the node has loaded
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* its view, even if triggered by -setNeedsLayout, as it is assumed these are
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* not relevant to UIKit. Indeed, these calls can cause consistency issues.
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*
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* @param node A node informing the delegate about the relayout.
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* @param sizeChanged `YES` if the node's `calculatedSize` changed during the relayout, `NO` otherwise.
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*/
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- (void)nodeDidRelayout:(ASCellNode *)node sizeChanged:(BOOL)sizeChanged;
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@end
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@interface ASCellNode ()
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/*
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* A delegate to be notified (on main thread) after a relayout.
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*/
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@property (nonatomic, weak) id<ASCellNodeLayoutDelegate> layoutDelegate;
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/*
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* Back-pointer to the containing scrollView instance, set only for visible cells. Used for Cell Visibility Event callbacks.
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*/
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@property (nonatomic, weak) UIScrollView *scrollView;
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@end
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