mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-21 16:28:26 +00:00
1717b2c904
Summary: References #842 We use -[UIScrollViewDelegate scrollViewDidEndDecelerating:] delegate callback in the app we are building to hide/show elements when motion has ended. Closes https://github.com/Instagram/IGListKit/pull/899 Differential Revision: D5689239 Pulled By: rnystrom fbshipit-source-id: ea17fe94ccacc5e4f0a9e085e61f8f77cfcea3b4
62 lines
2.2 KiB
Objective-C
62 lines
2.2 KiB
Objective-C
/**
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* Copyright (c) 2016-present, Facebook, Inc.
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* All rights reserved.
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*
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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 <UIKit/UIKit.h>
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@class IGListAdapter;
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@class IGListSectionController;
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NS_ASSUME_NONNULL_BEGIN
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/**
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Implement this protocol to receive display events for a section controller when it is on screen.
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*/
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NS_SWIFT_NAME(ListScrollDelegate)
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@protocol IGListScrollDelegate <NSObject>
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/**
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Tells the delegate that the section controller was scrolled on screen.
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@param listAdapter The list adapter whose collection view was scrolled.
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@param sectionController The visible section controller that was scrolled.
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*/
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- (void)listAdapter:(IGListAdapter *)listAdapter didScrollSectionController:(IGListSectionController *)sectionController;
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/**
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Tells the delegate that the section controller will be dragged on screen.
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@param listAdapter The list adapter whose collection view will drag.
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@param sectionController The visible section controller that will drag.
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*/
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- (void)listAdapter:(IGListAdapter *)listAdapter willBeginDraggingSectionController:(IGListSectionController *)sectionController;
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/**
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Tells the delegate that the section controller did end dragging on screen.
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@param listAdapter The list adapter whose collection view ended dragging.
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@param sectionController The visible section controller that ended dragging.
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*/
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- (void)listAdapter:(IGListAdapter *)listAdapter didEndDraggingSectionController:(IGListSectionController *)sectionController willDecelerate:(BOOL)decelerate;
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/**
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Tells the delegate that the section controller did end decelerating on screen.
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@param listAdapter The list adapter whose collection view ended decelerating.
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@param sectionController The visible section controller that ended decelerating.
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@note This method is `@optional` until the next breaking-change release.
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*/
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@optional
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- (void)listAdapter:(IGListAdapter *)listAdapter didEndDeceleratingSectionController:(IGListSectionController *)sectionController;
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@end
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NS_ASSUME_NONNULL_END
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