IGListKit/Source/IGListWorkingRangeDelegate.h
Ryan Nystrom 000bc36919 Relicense to MIT
Summary: Relicensing IGListKit under MIT

Reviewed By: calimarkus

Differential Revision: D7764125

fbshipit-source-id: 6c773195ef3184202725fe7f08de754f979cb83f
2018-05-01 14:50:56 -07:00

44 lines
1.3 KiB
Objective-C

/**
* Copyright (c) 2016-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import <UIKit/UIKit.h>
@class IGListAdapter;
@class IGListSectionController;
NS_ASSUME_NONNULL_BEGIN
/**
Implement this protocol to receive working range events for a list.
The working range is a range *near* the viewport in which you can begin preparing content for display. For example,
you could begin decoding images, or warming text caches.
*/
NS_SWIFT_NAME(ListWorkingRangeDelegate)
@protocol IGListWorkingRangeDelegate <NSObject>
/**
Notifies the delegate that an section controller will enter the working range.
@param listAdapter The adapter controlling the list.
@param sectionController The section controller entering the range.
*/
- (void)listAdapter:(IGListAdapter *)listAdapter sectionControllerWillEnterWorkingRange:(IGListSectionController *)sectionController;
/**
Notifies the delegate that an section controller exited the working range.
@param listAdapter The adapter controlling the list.
@param sectionController The section controller that exited the range.
*/
- (void)listAdapter:(IGListAdapter *)listAdapter sectionControllerDidExitWorkingRange:(IGListSectionController *)sectionController;
@end
NS_ASSUME_NONNULL_END