mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-24 09:48:21 +00:00
305a7bce0a
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
58 lines
1.9 KiB
Swift
58 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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/// Like ExpandableSectionController, but supports UICollectionViewCompositionalLayout
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final class ExpandableComposableSectionController: ListSectionController, CompositionLayoutCapable {
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private var expanded = false
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private var object: String?
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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
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cell.expanded = expanded
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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? String
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}
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override func didSelectItem(at index: Int) {
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expanded = !expanded
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guard let cell = collectionContext.cellForItem(at: index, sectionController: self) as? CompositionLayoutCell else {
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return
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}
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cell.expanded = expanded
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UIView.animate(withDuration: 0.5,
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delay: 0,
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usingSpringWithDamping: 0.4,
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initialSpringVelocity: 0.6,
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options: [],
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animations: {
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self.collectionContext?.invalidateLayout(for: self)
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})
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}
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// MARK: CompositionLayoutCapable
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func collectionViewSectionLayout(layoutEnvironment: NSCollectionLayoutEnvironment) -> NSCollectionLayoutSection? {
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let config = UICollectionLayoutListConfiguration(appearance: .plain)
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return NSCollectionLayoutSection.list(using: config, layoutEnvironment: layoutEnvironment)
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}
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}
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