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/* Copyright (c) 2014-present, Facebook, Inc.
 * All rights reserved.
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
#import <UIKit/UIKit.h>
#import <AsyncDisplayKit/ASRangeController.h>
#import <AsyncDisplayKit/ASTableViewProtocols.h>
#import <AsyncDisplayKit/ASBatchContext.h>
@class ASCellNode;
@protocol ASTableViewDataSource;
@protocol ASTableViewDelegate;
 * Node-based table view.
 * ASTableView is a version of UITableView that uses nodes -- specifically, ASCellNode subclasses -- with asynchronous
 * pre-rendering instead of synchronously loading UITableViewCells.
@interface ASTableView : UITableView
@property (nonatomic, weak) id<ASTableViewDataSource> asyncDataSource;
@property (nonatomic, weak) id<ASTableViewDelegate> asyncDelegate;
 * Tuning parameters for the working range.
 * Defaults to a trailing buffer of one screenful and a leading buffer of two screenfuls.
@property (nonatomic, assign) ASRangeTuningParameters rangeTuningParameters;
 * The number of screens left to scroll before the delegate -tableView:shouldBeginBatchFetchingWithContext: is called.
 * Defaults to one screenful.
@property (nonatomic, assign) CGFloat leadingScreensForBatching;
 * Reload everything from scratch, destroying the working range and all cached nodes.
 * @warning This method is substantially more expensive than UITableView's version.
- (void)reloadData;
 * We don't support the these methods for animation yet.
 * TODO: support animations.
- (void)beginUpdates;
- (void)endUpdates;
 * Section updating.
 * All operations are asynchronous and thread safe. You can call it from background thread (it is recommendated) and the UI collection
 * view will be updated asynchronously. The asyncDataSource must be updated to reflect the changes before these methods are called.
- (void)insertSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation;
- (void)deleteSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation;
- (void)reloadSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation;
- (void)moveSection:(NSInteger)section toSection:(NSInteger)newSection;
 * Row updating.
 * All operations are asynchronous and thread safe. You can call it from background thread (it is recommendated) and the UI collection
 * view will be updated asynchronously. The asyncDataSource must be updated to reflect the changes before these methods are called.
- (void)insertRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation;
- (void)deleteRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation;
- (void)reloadRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation;
- (void)moveRowAtIndexPath:(NSIndexPath *)indexPath toIndexPath:(NSIndexPath *)newIndexPath;
 * Similar to -cellForRowAtIndexPath:.
 * @param indexPath The index path of the requested node.
 * @returns a node for display at this indexpath.
- (ASCellNode *)nodeForRowAtIndexPath:(NSIndexPath *)indexPath;
 * Similar to -visibleCells.
 * @returns an array containing the nodes being displayed on screen.
- (NSArray *)visibleNodes;
 * This is a node-based UITableViewDataSource.
@protocol ASTableViewDataSource <ASCommonTableViewDataSource, NSObject>
 * Similar to -tableView:cellForRowAtIndexPath:.
 * @param tableView The sender.
 * @param indexPath The index path of the requested node.
 * @returns a node for display at this indexpath.  Must be thread-safe (can be called on the main thread or a background
 * queue) and should not implement reuse (it will be called once per row).  Unlike UITableView's version, this method
 * is not called when the row is about to display.
- (ASCellNode *)tableView:(ASTableView *)tableView nodeForRowAtIndexPath:(NSIndexPath *)indexPath;
 * This is a node-based UITableViewDelegate.
 * Note that -tableView:heightForRowAtIndexPath: has been removed; instead, your custom ASCellNode subclasses are
 * responsible for deciding their preferred onscreen height in -calculateSizeThatFits:.
@protocol ASTableViewDelegate <ASCommonTableViewDelegate, NSObject>
- (void)tableView:(UITableView *)tableView willDisplayNodeForRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableView:(UITableView *)tableView didEndDisplayingNodeForRowAtIndexPath:(NSIndexPath*)indexPath;
 * Tell the tableView if batch fetching should begin.
 * @param tableView The sender.
 * @discussion Use this method to conditionally fetch batches. Example use cases are: limiting the total number of
 * objects that can be fetched or no network connection.
 * If not implemented, the tableView assumes that it should notify its asyncDelegate when batch fetching
 * should occur.
- (BOOL)shouldBatchFetchForTableView:(UITableView *)tableView;
 * Receive a message that the tableView is near the end of its data set and more data should be fetched if necessary.
 * @param tableView The sender.
 * @param context A context object that must be notified when the batch fetch is completed.
 * @discussion You must eventually call -completeBatchFetching: with an argument of YES in order to receive future
 * notifications to do batch fetches.
 * ASTableView currently only supports batch events for tail loads. If you require a head load, consider implementing a
 * UIRefreshControl.
- (void)tableView:(UITableView *)tableView beginBatchFetchingWithContext:(ASBatchContext *)context;
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