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74c6cca0b6
* Refactor ASDataController Check optional methods in ASDataControllerSource * Reimplement reloadData * Refactor new code - No more new/inserted contexts flag - Encapsulate code shared between reloadData and updateWithChangeSet - Remove dataControllerWillDeleteAllData delegate method - Hierarchy changes no longer needs to conform to NSCopying - Reword TODOs * Forgot to call completion block of reloadData :P * Completion block of -[ASDataController reloadDataWithCompletion:] is nullable * Data queried from ASCollectionNode and ASTableNode should be in UIKit index space - This helps to avoid immature node allocation, especially when node virtualization is a thing - However, this means that -reloadDataInitiallyIfNeeded in ASCollectionNode and ASTableNode must wait until all updates are finished. * ASDataController shouldn't assume that allocated nodes were also laid out * Revert "Data queried from ASCollectionNode and ASTableNode should be in UIKit index space" This reverts commit 7bc977b3808a92f484b297781d0f5b30aa258e17. * -nodeAtIndexPath: of ASDataController now forces node allocation, with the assumption that clients absolutely need it. - Revisit this when node virtualization is implemented. * ASDataController only grab changeSet.completionHandler when needed because it'll be niled out * Fix ASTableViewTests related to reloadData * Fix testThatDeletedItemsAreMarkedInvisible in ASCollectionViewTests * Minor changes in ASCollectionView and ASTableView * ASCollectionView and ASTableView shouldn't call [super reloadData] before their data controller does anything * Address comments * Fuse reloadData into -updateWithChangeSet: of ASDataController * reloadData shouldn't be called as if it's inside a batch - It can't be used in conjuntion with other updates. - Calling it inside a batch update during the initial load can cause data inconsistency thrown by UICollectionView/UITableView * Refactor ASDataControllerDelegate and ASRangeControllerDelegate - Replace delegate methods in these protocols with -willUpdateWithChangeSet and -didUpdateWithChangeSet. - ASRangeController, ASCollectionView and ASTableView are simplified because of this. * Fix mismatch between sorting orders in ASDataController * Forgot to call completion handler of reload change sets * Make sure ASCollectionView is compatible with the behavior of UICollectionView's reloadData - Since UICollectionView's reloadData doesn't requery data source but defers until the next layout pass, we need to wait until then to update range controller and do batch fetching. - `-[ASCollectionView waitUntilAllUpdatesAreCommited]` needs to force a layout pass to make sure everything is ready after it returns. * testSectionIndexHandling of ASTableViewTests should only check visible nodes. Other nodes will be re-measured later. * ASTableView is not ready until the first layout pass finished * Address comments * Bug fixes
58 lines
2.0 KiB
Objective-C
58 lines
2.0 KiB
Objective-C
//
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// ASCollectionDataController.h
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// AsyncDisplayKit
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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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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#ifndef MINIMAL_ASDK
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#import <UIKit/UIKit.h>
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#import <AsyncDisplayKit/ASDataController.h>
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#import <AsyncDisplayKit/ASDimension.h>
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@class ASDisplayNode;
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@class ASCollectionDataController;
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@protocol ASSectionContext;
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NS_ASSUME_NONNULL_BEGIN
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@protocol ASCollectionDataControllerSource <ASDataControllerSource>
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/**
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The constrained size range for layout.
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*/
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- (ASSizeRange)dataController:(ASCollectionDataController *)dataController constrainedSizeForSupplementaryNodeOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath;
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- (NSArray<NSString *> *)supplementaryNodeKindsInDataController:(ASCollectionDataController *)dataController sections:(NSIndexSet *)sections;
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- (NSUInteger)dataController:(ASCollectionDataController *)dataController supplementaryNodesOfKind:(NSString *)kind inSection:(NSUInteger)section;
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- (nullable id<ASSectionContext>)dataController:(ASCollectionDataController *)dataController contextForSection:(NSInteger)section;
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@optional
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- (ASCellNode *)dataController:(ASCollectionDataController *)dataController supplementaryNodeOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath;
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- (ASCellNodeBlock)dataController:(ASCollectionDataController *)dataController supplementaryNodeBlockOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath;
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@end
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@interface ASCollectionDataController : ASDataController
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- (instancetype)initWithDataSource:(id<ASCollectionDataControllerSource>)dataSource eventLog:(nullable ASEventLog *)eventLog NS_DESIGNATED_INITIALIZER;
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- (nullable ASCellNode *)supplementaryNodeOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath;
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- (nullable id<ASSectionContext>)contextForSection:(NSInteger)section;
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@end
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NS_ASSUME_NONNULL_END
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#endif
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