mirror of
https://github.com/Instagram/IGListKit
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01bd505d8b
Summary: ## Changes in this pull request This PR adds a new feed view controller demo to the IGListKit example app, showcasing how to implement a social media feed with IGListKit. The demo features infinite scrolling with pagination, post deletion, and interactive elements. Also, I've improved the UI testing infrastructure by adding helper methods for more reliable tests across different device types. The new helpers make the tests more resilient when dealing with iPad split views and ensure elements are properly visible before interacting with them. ### Checklist - [X] All tests pass. Demo project builds and runs. - [X] I added tests, an experiment, or detailed why my change isn't tested. - [X] I added an entry to the `CHANGELOG.md` for any breaking changes, enhancements, or bug fixes. - [x] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/main/.github/CONTRIBUTING.md) Pull Request resolved: https://github.com/Instagram/IGListKit/pull/1629 Reviewed By: fabiomassimo Differential Revision: D77482204 Pulled By: TimOliver fbshipit-source-id: 44ac86ed253e8452388aad50a1ed05bc6f3a31ab
54 lines
1.9 KiB
Swift
54 lines
1.9 KiB
Swift
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import IGListKit
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import UIKit
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final class GridComposableSectionController: ListSectionController, CompositionLayoutCapable {
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private var object: GridItem?
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override func numberOfItems() -> Int {
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return object?.itemCount ?? 0
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}
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override func sizeForItem(at index: Int) -> CGSize {
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// Size handled by cell
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return CGSize.zero
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}
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override func cellForItem(at index: Int) -> UICollectionViewCell {
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let cell: CompositionLayoutCell = collectionContext.dequeueReusableCell(for: self, at: index)
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cell.text = object?.items[index] ?? "undefined"
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cell.contentView.backgroundColor = object?.color
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return cell
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}
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override func didUpdate(to object: Any) {
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self.object = object as? GridItem
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}
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// MARK: CompositionLayoutCapable
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func collectionViewSectionLayout(layoutEnvironment: NSCollectionLayoutEnvironment) -> NSCollectionLayoutSection? {
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// Item
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let columnCount: CGFloat = 3
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let itemSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0 / columnCount),
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heightDimension: .fractionalHeight(1.0))
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let item = NSCollectionLayoutItem(layoutSize: itemSize)
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item.contentInsets = NSDirectionalEdgeInsets(top: 2, leading: 2, bottom: 2, trailing: 2)
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// Group
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let groupSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0),
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heightDimension: .fractionalWidth(1.0 / columnCount))
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let group = NSCollectionLayoutGroup.horizontal(layoutSize: groupSize,
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subitems: [item])
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// Section
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return NSCollectionLayoutSection(group: group)
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}
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}
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