IGListKit/Source/IGListDiffKit/IGListBatchUpdateData.h
Nate Stedman e4c60650f2 Split IGListKit and IGListDiffKit (#1377)
Summary:
Pull Request resolved: https://github.com/Instagram/IGListKit/pull/1377

This splits the diffing-only components from `IGListKit` out into a separate library, `IGListDiffKit`, allowing them to be used independently of the rest of `IGListKit`. We've found that the diffing components of the library are useful independently of the rest of the `UICollectionView` infrastructure, and separating the libraries allows apps to take advantage of those components without paying the full binary size cost of `IGListKit`. The diffing components are available as a subspec in Cocoapods, and as an independent framework in Carthage and direct Xcode project import (i.e. Git submodules).

This is a breaking change, necessitating a major version bump, although it should have only minor impact for projects using the umbrella header `IGListKit.h`, as that header continues to import the diffing utilities. In particular, for a project using Cocoapods and importing `IGListKit.h`, there should be no code changes required.

Reviewed By: calimarkus

Differential Revision: D18114249

fbshipit-source-id: 363b5a427e32800bbc6e82f897230963b4167245
2019-10-31 08:26:12 -07:00

106 lines
3.4 KiB
Objective-C

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import <Foundation/Foundation.h>
#import <IGListDiffKit/IGListMacros.h>
#import <IGListDiffKit/IGListMoveIndex.h>
#import <IGListDiffKit/IGListMoveIndexPath.h>
NS_ASSUME_NONNULL_BEGIN
/**
An instance of `IGListBatchUpdateData` takes section indexes and item index paths
and performs cleanup on init in order to perform a crash-free
update via `-[UICollectionView performBatchUpdates:completion:]`.
*/
IGLK_SUBCLASSING_RESTRICTED
NS_SWIFT_NAME(ListBatchUpdateData)
@interface IGListBatchUpdateData : NSObject
/**
Section insert indexes.
*/
@property (nonatomic, strong, readonly) NSIndexSet *insertSections;
/**
Section delete indexes.
*/
@property (nonatomic, strong, readonly) NSIndexSet *deleteSections;
/**
Section moves.
*/
@property (nonatomic, strong, readonly) NSSet<IGListMoveIndex *> *moveSections;
/**
Item insert index paths.
*/
@property (nonatomic, strong, readonly) NSArray<NSIndexPath *> *insertIndexPaths;
/**
Item delete index paths.
*/
@property (nonatomic, strong, readonly) NSArray<NSIndexPath *> *deleteIndexPaths;
/**
Item update index paths.
*/
@property (nonatomic, strong, readonly) NSArray<NSIndexPath *> *updateIndexPaths;
/**
Item moves.
*/
@property (nonatomic, strong, readonly) NSArray<IGListMoveIndexPath *> *moveIndexPaths;
/**
Creates a new batch update object with section and item operations.
@param insertSections Section indexes to insert.
@param deleteSections Section indexes to delete.
@param moveSections Section moves.
@param insertIndexPaths Item index paths to insert.
@param deleteIndexPaths Item index paths to delete.
@param updateIndexPaths Item index paths to update.
@param moveIndexPaths Item index paths to move.
@param fixIndexPathImbalance When enabled, we remove duplicate NSIndexPath inserts to avoid insert/delete imbalance and a crash.
@return A new batch update object.
*/
- (instancetype)initWithInsertSections:(NSIndexSet *)insertSections
deleteSections:(NSIndexSet *)deleteSections
moveSections:(NSSet<IGListMoveIndex *> *)moveSections
insertIndexPaths:(NSArray<NSIndexPath *> *)insertIndexPaths
deleteIndexPaths:(NSArray<NSIndexPath *> *)deleteIndexPaths
updateIndexPaths:(NSArray<NSIndexPath *> *)updateIndexPaths
moveIndexPaths:(NSArray<IGListMoveIndexPath *> *)moveIndexPaths
fixIndexPathImbalance:(BOOL)fixIndexPathImbalance NS_DESIGNATED_INITIALIZER;
/**
Convenience initializer with fixIndexPathImbalance disabled.
*/
- (instancetype)initWithInsertSections:(NSIndexSet *)insertSections
deleteSections:(NSIndexSet *)deleteSections
moveSections:(NSSet<IGListMoveIndex *> *)moveSections
insertIndexPaths:(NSArray<NSIndexPath *> *)insertIndexPaths
deleteIndexPaths:(NSArray<NSIndexPath *> *)deleteIndexPaths
updateIndexPaths:(NSArray<NSIndexPath *> *)updateIndexPaths
moveIndexPaths:(NSArray<IGListMoveIndexPath *> *)moveIndexPaths;
/**
:nodoc:
*/
- (instancetype)init NS_UNAVAILABLE;
/**
:nodoc:
*/
+ (instancetype)new NS_UNAVAILABLE;
@end
NS_ASSUME_NONNULL_END