IGListKit/Tests/Objects/IGListTestSection.h
Maxime Ollivier 6faddd99c9 avoid layout before IGListAdapter scrollToObject
Summary:
* Issue: `[IGListAdapter scrollToObject ...]` currently calls `[collectionView layoutIfNeeded]` before scrolling which creates the current visible cells that will no longer be visible after the scroll. This causes perf issues when we scroll immediately after creating the view controller.
* Fix: Instead of asking the layout object for the attributes, lets go throught the `UICollectionView`. So if the attributes are not ready, the `UICollectionView` will call `-prepareLayout`, return the attributes, but doesn't generate the cells just yet.

Differential Revision: D17326459

fbshipit-source-id: 745942225e0311fea7c3efb07ac1e8b8e0a82996
2019-09-13 14:57:52 -07:00

25 lines
793 B
Objective-C

/**
* Copyright (c) Facebook, Inc. and its affiliates.
* 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 <IGListKit/IGListSectionController.h>
@interface IGListTestSection : IGListSectionController
@property (nonatomic, assign) NSInteger items;
@property (nonatomic, assign) CGSize size;
@property (nonatomic, assign) BOOL wasSelected;
@property (nonatomic, assign) BOOL wasDeselected;
@property (nonatomic, assign) BOOL wasHighlighted;
@property (nonatomic, assign) BOOL wasUnhighlighted;
@property (nonatomic, assign) BOOL wasDisplayed;
@end