mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-08 18:10:53 +00:00
3102852ce2
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
86 lines
2.8 KiB
Objective-C
86 lines
2.8 KiB
Objective-C
/**
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* Copyright (c) 2016-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 "IGListSectionControllerInternal.h"
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#import <IGListKit/IGListMacros.h>
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#import <IGListKit/IGListAssert.h>
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static NSString * const kIGListSectionControllerThreadKey = @"kIGListSectionControllerThreadKey";
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@interface IGListSectionControllerThreadContext : NSObject
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@property (nonatomic, weak) UIViewController *viewController;
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@property (nonatomic, weak) id<IGListCollectionContext> collectionContext;
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@end
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@implementation IGListSectionControllerThreadContext
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@end
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static NSMutableArray<IGListSectionControllerThreadContext *> *threadContextStack(void) {
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IGAssertMainThread();
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NSMutableDictionary *threadDictionary = [[NSThread currentThread] threadDictionary];
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NSMutableArray *stack = threadDictionary[kIGListSectionControllerThreadKey];
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if (stack == nil) {
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stack = [NSMutableArray new];
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threadDictionary[kIGListSectionControllerThreadKey] = stack;
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}
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return stack;
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}
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void IGListSectionControllerPushThread(UIViewController *viewController, id<IGListCollectionContext> collectionContext) {
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IGListSectionControllerThreadContext *context = [IGListSectionControllerThreadContext new];
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context.viewController = viewController;
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context.collectionContext = collectionContext;
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[threadContextStack() addObject:context];
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}
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void IGListSectionControllerPopThread(void) {
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NSMutableArray *stack = threadContextStack();
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IGAssert(stack.count > 0, @"IGListSectionController thread stack is empty");
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[stack removeLastObject];
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}
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@implementation IGListSectionController
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- (instancetype)init {
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if (self = [super init]) {
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IGListSectionControllerThreadContext *context = [threadContextStack() lastObject];
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_viewController = context.viewController;
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_collectionContext = context.collectionContext;
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if (_collectionContext == nil) {
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IGLKLog(@"Warning: Creating %@ outside of -[IGListAdapterDataSource listAdapter:sectionControllerForObject:]. Collection context and view controller will be set later.",
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NSStringFromClass([self class]));
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}
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_minimumInteritemSpacing = 0.0;
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_minimumLineSpacing = 0.0;
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_inset = UIEdgeInsetsZero;
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}
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return self;
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}
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- (NSInteger)numberOfItems {
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return 1;
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}
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- (CGSize)sizeForItemAtIndex:(NSInteger)index {
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return CGSizeZero;
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}
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- (__kindof UICollectionViewCell *)cellForItemAtIndex:(NSInteger)index {
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IGFailAssert(@"Section controller %@ must override %s:", self, __PRETTY_FUNCTION__);
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return nil;
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}
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- (void)didUpdateToObject:(id)object {}
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- (void)didSelectItemAtIndex:(NSInteger)index {}
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@end
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