IGListKit/Source/Internal/IGListStackedSectionControllerInternal.h
Ryan Nystrom 3102852ce2 Remove IGListSectionType
Summary:
Removing the `IGListSectionType` protocol and adding default implementations into `IGListSectionController`.

- `numberOfItems` returns 1
- `cellForItemAtIndex:` asserts (have to return a cell)
- `didUpdateToObject:` no-ops
- `didSelectItemAtIndex:` no-ops

Fixes #168

Reviewed By: jessesquires

Differential Revision: D4909585

fbshipit-source-id: 8816702504e3fc0683868914ff4dd20e4af7c166
2017-04-19 08:26:30 -07:00

44 lines
1.7 KiB
Objective-C

/**
* Copyright (c) 2016-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 <IGListKit/IGListDisplayDelegate.h>
#import "IGListStackedSectionController.h"
@interface IGListStackedSectionController ()
<
IGListBatchContext,
IGListCollectionContext,
IGListDisplayDelegate,
IGListScrollDelegate,
IGListWorkingRangeDelegate
>
@property (nonatomic, strong, readonly) NSOrderedSet<__kindof IGListSectionController *> *sectionControllers;
/// An array the length of the total number of items in the stack, pointing to a section controller for the item index.
@property (nonatomic, copy) NSArray<IGListSectionController *> *sectionControllersForItems;
/// An array of index offsets for each item in the flattened stack.
@property (nonatomic, copy) NSArray<NSNumber *> *sectionControllerOffsets;
/// A cached collection of the number of items summed from each section controller in the stack.
@property (nonatomic, assign) NSInteger flattenedNumberOfItems;
/// A counted set of the visible section controllers, used to forward granular display events to child section controllers
@property (nonatomic, strong, readonly) NSCountedSet *visibleSectionControllers;
/// Temporary batch context so the stack controller can transform child indices within the stack before updating.
@property (nonatomic, strong) id<IGListBatchContext> forwardingBatchContext;
- (IGListSectionController *)sectionControllerForObjectIndex:(NSInteger)itemIndex;
- (NSInteger)offsetForSectionController:(IGListSectionController *)sectionController;
- (void)reloadData;
@end