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100 lines
3.7 KiB
Objective-C
100 lines
3.7 KiB
Objective-C
/* Copyright (c) 2015-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 "ASDataController.h"
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@interface ASDataController (Subclasses)
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/**
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* Queues the given operation until an `endUpdates` synchronize update is completed.
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*
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* If this method is called outside of a begin/endUpdates batch update, the block is
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* executed immediately.
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*/
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- (void)performEditCommandWithBlock:(void (^)(void))block;
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/**
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* Safely locks access to the data source and executes the given block, unlocking once complete.
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*
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* When `asyncDataFetching` is enabled, the block is executed on a background thread.
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*/
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- (void)accessDataSourceWithBlock:(dispatch_block_t)block;
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- (void)willPerformInitialDataLoading;
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/**
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* An opportunity for a subclass to access the data source before entering into the editing queue
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*/
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- (void)prepareForReloadData;
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/**
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* Subclasses can override this to reload data after the abstract data controller deletes its old data and before it reloads the new.
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*
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* @discussion Invoked on the editing transaction queue.
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*/
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- (void)willReloadData;
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- (void)prepareInsertSections:(NSIndexSet *)sections;
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- (void)willInsertSections:(NSIndexSet *)sections;
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- (void)willDeleteSections:(NSIndexSet *)sections;
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- (void)prepareForReloadSections:(NSIndexSet *)sections;
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- (void)willReloadSections:(NSIndexSet *)sections;
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- (void)willMoveSection:(NSInteger)section toSection:(NSInteger)newSection;
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/**
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* Provides a collection of index paths for nodes of the given kind that are currently in the editing store
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*/
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- (NSArray *)indexPathsForEditingNodesOfKind:(NSString *)kind;
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/**
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* Read-only access to the underlying editing nodes of the given kind
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*/
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- (NSArray *)editingNodesOfKind:(NSString *)kind;
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/**
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* Read only access to the underlying completed nodes of the given kind
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*/
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- (NSArray *)completedNodesOfKind:(NSString *)kind;
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/**
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* Measure and layout the given nodes in optimized batches, constraining each to a given size in `constrainedSizeForNodeOfKind:atIndexPath:`.
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*/
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- (void)batchLayoutNodes:(NSArray *)nodes ofKind:(NSString *)kind atIndexPaths:(NSArray *)indexPaths completion:(void (^)(NSArray *nodes, NSArray *indexPaths))completionBlock;
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/**
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* Provides the size range for a specific node during the layout process.
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*/
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- (ASSizeRange)constrainedSizeForNodeOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath;
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/**
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* Inserts the given nodes of the specified kind into the backing store, calling completion on the main thread when the write finishes.
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*/
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- (void)insertNodes:(NSArray *)nodes ofKind:(NSString *)kind atIndexPaths:(NSArray *)indexPaths completion:(void (^)(NSArray *nodes, NSArray *indexPaths))completionBlock;
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/**
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* Deletes the given nodes of the specified kind in the backing store, calling completion on the main thread when the deletion finishes.
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*/
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- (void)deleteNodesOfKind:(NSString *)kind atIndexPaths:(NSArray *)indexPaths completion:(void (^)(NSArray *nodes, NSArray *indexPaths))completionBlock;
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/**
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* Inserts the given sections of the specified kind in the backing store, calling completion on the main thread when finished.
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*/
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- (void)insertSections:(NSMutableArray *)sections ofKind:(NSString *)kind atIndexSet:(NSIndexSet *)indexSet completion:(void (^)(NSArray *sections, NSIndexSet *indexSet))completionBlock;
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/**
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* Deletes the given sections of the specified kind in the backing store, calling completion on the main thread when finished.
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*/
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- (void)deleteSectionsOfKind:(NSString *)kind atIndexSet:(NSIndexSet *)indexSet completion:(void (^)(NSIndexSet *indexSet))completionBlock;
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@end
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