mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-21 08:18:35 +00:00
b5aa5e3900
Summary: Replacing the move+update API with a batch-updates-safe API on the diff results object. This makes using the diff results w/out the rest of IGListKit infra much easier when working with `UITableView` or `UICollectionView`. - Added unit tests - Removed outdated unit tests Reviewed By: dshahidehpour Differential Revision: D4065798 fbshipit-source-id: 30da8a7b483d56d5acc497da9320dc07a6d0b7ad
76 lines
2 KiB
Objective-C
76 lines
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 <Foundation/Foundation.h>
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#import <IGListKit/IGListMoveIndex.h>
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NS_ASSUME_NONNULL_BEGIN
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/**
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Result object returned when diffing with indexes.
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*/
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@interface IGListIndexSetResult : NSObject
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/**
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Indexes inserted into the new collection.
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*/
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@property (nonatomic, strong, readonly) NSIndexSet *inserts;
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/**
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Indexes deleted from the old collection.
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*/
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@property (nonatomic, strong, readonly) NSIndexSet *deletes;
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/**
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Indexes in the new collection that need updated.
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*/
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@property (nonatomic, strong, readonly) NSIndexSet *updates;
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/**
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Moves from an index in the old collection to an index in the new collection.
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*/
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@property (nonatomic, copy, readonly) NSArray<IGListMoveIndex *> *moves;
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/**
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Convenience to query if the result has any changes.
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@return YES if the result has changes, NO otherwise.
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*/
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- (BOOL)hasChanges;
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/**
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Fetch the index of the object with identifier before the diff.
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@param identifier The diff identifier of the object. See -[IGListDiffable diffIdentifier].
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@return The index of the object before the diff, or NSNotFound.
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*/
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- (NSUInteger)oldIndexForIdentifier:(id<NSObject>)identifier;
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/**
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Fetch the index of the object with identifier after the diff.
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@param identifier The diff identifier of the object. See -[IGListDiffable diffIdentifier].
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@return The index of the object after the diff, or NSNotFound.
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*/
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- (NSUInteger)newIndexForIdentifier:(id<NSObject>)identifier;
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/**
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Create a new result object with operations safe for use in UITableView and UICollectionView batch updates.
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*/
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- (IGListIndexSetResult *)resultForBatchUpdates;
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- (instancetype)init NS_UNAVAILABLE;
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+ (instancetype)new NS_UNAVAILABLE;
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@end
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NS_ASSUME_NONNULL_END
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