mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-15 05:18:18 +00:00
a15ea08614
Summary: We constantly have random bugs pop up when mutations are made outside of a batch update. This change restricts the mutation API to a batch context object (which is just an `IGListAdapter`) so they can only be done **inside an update block**. - Fixed open source project - Confirmed open source examples build - Updated all of Instagram.app to use this API - Changelog breaking changes entry Fixes #392 Reviewed By: jessesquires Differential Revision: D4754129 fbshipit-source-id: 11d32a0fac3e50c9edbb01e92a8a0c7b8a43cf2d
44 lines
1.8 KiB
Objective-C
44 lines
1.8 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 <IGListKit/IGListDisplayDelegate.h>
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#import "IGListStackedSectionController.h"
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@interface IGListStackedSectionController ()
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<
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IGListBatchContext,
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IGListCollectionContext,
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IGListDisplayDelegate,
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IGListScrollDelegate,
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IGListWorkingRangeDelegate
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>
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@property (nonatomic, strong, readonly) NSOrderedSet<__kindof IGListSectionController<IGListSectionType> *> *sectionControllers;
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/// An array the length of the total number of items in the stack, pointing to a section controller for the item index.
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@property (nonatomic, copy) NSArray<IGListSectionController<IGListSectionType> *> *sectionControllersForItems;
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/// An array of index offsets for each item in the flattened stack.
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@property (nonatomic, copy) NSArray<NSNumber *> *sectionControllerOffsets;
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/// A cached collection of the number of items summed from each section controller in the stack.
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@property (nonatomic, assign) NSInteger flattenedNumberOfItems;
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/// A counted set of the visible section controllers, used to forward granular display events to child section controllers
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@property (nonatomic, strong, readonly) NSCountedSet *visibleSectionControllers;
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/// Temporary batch context so the stack controller can transform child indices within the stack before updating.
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@property (nonatomic, strong) id<IGListBatchContext> forwardingBatchContext;
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- (IGListSectionController <IGListSectionType> *)sectionControllerForObjectIndex:(NSInteger)itemIndex;
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- (NSInteger)offsetForSectionController:(IGListSectionController<IGListSectionType> *)sectionController;
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- (void)reloadData;
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@end
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