mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-09-08 21:49:41 +00:00
98 lines
4.0 KiB
Objective-C
98 lines
4.0 KiB
Objective-C
//
|
|
// _ASHierarchyChangeSet.h
|
|
// AsyncDisplayKit
|
|
//
|
|
// Created by Adlai Holler on 9/29/15.
|
|
//
|
|
// 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 <Foundation/Foundation.h>
|
|
#import <AsyncDisplayKit/ASInternalHelpers.h>
|
|
|
|
NS_ASSUME_NONNULL_BEGIN
|
|
|
|
typedef NSUInteger ASDataControllerAnimationOptions;
|
|
|
|
typedef NS_ENUM(NSInteger, _ASHierarchyChangeType) {
|
|
_ASHierarchyChangeTypeReload,
|
|
_ASHierarchyChangeTypeDelete,
|
|
_ASHierarchyChangeTypeInsert
|
|
};
|
|
|
|
NSString *NSStringFromASHierarchyChangeType(_ASHierarchyChangeType changeType);
|
|
|
|
@interface _ASHierarchySectionChange : NSObject
|
|
|
|
// FIXME: Generalize this to `changeMetadata` dict?
|
|
@property (nonatomic, readonly) ASDataControllerAnimationOptions animationOptions;
|
|
|
|
@property (nonatomic, strong, readonly) NSIndexSet *indexSet;
|
|
@property (nonatomic, readonly) _ASHierarchyChangeType changeType;
|
|
@end
|
|
|
|
@interface _ASHierarchyItemChange : NSObject
|
|
@property (nonatomic, readonly) ASDataControllerAnimationOptions animationOptions;
|
|
|
|
/// Index paths are sorted descending for changeType .Delete, ascending otherwise
|
|
@property (nonatomic, strong, readonly) NSArray<NSIndexPath *> *indexPaths;
|
|
|
|
@property (nonatomic, readonly) _ASHierarchyChangeType changeType;
|
|
|
|
+ (NSDictionary *)sectionToIndexSetMapFromChanges:(NSArray<_ASHierarchyItemChange *> *)changes ofType:(_ASHierarchyChangeType)changeType;
|
|
@end
|
|
|
|
@interface _ASHierarchyChangeSet : NSObject
|
|
|
|
/// @precondition The change set must be completed.
|
|
@property (nonatomic, strong, readonly) NSIndexSet *deletedSections;
|
|
/// @precondition The change set must be completed.
|
|
@property (nonatomic, strong, readonly) NSIndexSet *insertedSections;
|
|
|
|
/**
|
|
Get the section index after the update for the given section before the update.
|
|
|
|
@precondition The change set must be completed.
|
|
@returns The new section index, or NSNotFound if the given section was deleted.
|
|
*/
|
|
- (NSUInteger)newSectionForOldSection:(NSUInteger)oldSection;
|
|
|
|
@property (nonatomic, readonly) BOOL completed;
|
|
|
|
/// Call this once the change set has been constructed to prevent future modifications to the changeset. Calling this more than once is a programmer error.
|
|
/// NOTE: Calling this method will cause the changeset to convert all reloads into delete/insert pairs.
|
|
- (void)markCompleted;
|
|
|
|
/**
|
|
@abstract Return sorted changes of the given type, grouped by animation options.
|
|
|
|
Items deleted from deleted sections are not reported.
|
|
Items inserted into inserted sections are not reported.
|
|
Items reloaded in reloaded sections are not reported.
|
|
|
|
The safe order for processing change groups is:
|
|
- Reloaded sections & reloaded items
|
|
- Deleted items, descending order
|
|
- Deleted sections, descending order
|
|
- Inserted sections, ascending order
|
|
- Inserted items, ascending order
|
|
*/
|
|
- (nullable NSArray <_ASHierarchySectionChange *> *)sectionChangesOfType:(_ASHierarchyChangeType)changeType;
|
|
- (nullable NSArray <_ASHierarchyItemChange *> *)itemChangesOfType:(_ASHierarchyChangeType)changeType;
|
|
|
|
/// Returns all item indexes affected by changes of the given type in the given section.
|
|
- (NSIndexSet *)indexesForItemChangesOfType:(_ASHierarchyChangeType)changeType inSection:(NSUInteger)section;
|
|
|
|
- (void)deleteSections:(NSIndexSet *)sections animationOptions:(ASDataControllerAnimationOptions)options;
|
|
- (void)insertSections:(NSIndexSet *)sections animationOptions:(ASDataControllerAnimationOptions)options;
|
|
- (void)reloadSections:(NSIndexSet *)sections animationOptions:(ASDataControllerAnimationOptions)options;
|
|
- (void)insertItems:(NSArray<NSIndexPath *> *)indexPaths animationOptions:(ASDataControllerAnimationOptions)options;
|
|
- (void)deleteItems:(NSArray<NSIndexPath *> *)indexPaths animationOptions:(ASDataControllerAnimationOptions)options;
|
|
- (void)reloadItems:(NSArray<NSIndexPath *> *)indexPaths animationOptions:(ASDataControllerAnimationOptions)options;
|
|
@end
|
|
|
|
NS_ASSUME_NONNULL_END
|