mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-05 06:28:22 +00:00
0af9178992
Summary: Using array initialisation instead of for loop. - [X] All tests pass. Demo project builds and runs. - [ ] I added tests, an experiment, or detailed why my change isn't tested. - [X] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/CONTRIBUTING.md) Closes https://github.com/Instagram/IGListKit/pull/81 Differential Revision: D4030872 Pulled By: jessesquires fbshipit-source-id: f61114d60bacfcb7a3722a6727aa0060a68ae35d
81 lines
3.2 KiB
Swift
81 lines
3.2 KiB
Swift
/**
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Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
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The examples provided by Facebook are for non-commercial testing and evaluation
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purposes only. Facebook reserves all rights not expressly granted.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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import UIKit
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import IGListKit
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final class SingleSectionViewController: UIViewController, IGListAdapterDataSource, IGListSingleSectionControllerDelegate {
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lazy var adapter: IGListAdapter = {
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return IGListAdapter(updater: IGListAdapterUpdater(), viewController: self, workingRangeSize: 0)
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}()
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let collectionView = IGListCollectionView(frame: CGRect.zero, collectionViewLayout: UICollectionViewFlowLayout())
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let data = Array(0..<20)
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// MARK: - Lifecycle
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override func viewDidLoad() {
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super.viewDidLoad()
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view.addSubview(collectionView)
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adapter.collectionView = collectionView
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adapter.dataSource = self
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}
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override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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collectionView.frame = view.bounds
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}
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//MARK: - IGListAdapterDataSource
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func objects(for listAdapter: IGListAdapter) -> [IGListDiffable] {
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return data as [IGListDiffable]
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}
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func listAdapter(_ listAdapter: IGListAdapter, sectionControllerFor object: Any) -> IGListSectionController {
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let configureBlock = { (data: Any, cell: UICollectionViewCell) in
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guard let cell = cell as? NibCell, let number = data as? Int else { return }
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cell.textLabel.text = "Cell: \(number + 1)"
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}
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let sizeBlock = { (context: IGListCollectionContext?) -> CGSize in
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guard let context = context else { return CGSize() }
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return CGSize(width: context.containerSize.width, height: 44)
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}
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let sectionController = IGListSingleSectionController(nibName: NibCell.nibName,
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bundle: nil,
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configureBlock: configureBlock,
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sizeBlock: sizeBlock)
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sectionController.selectionDelegate = self
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return sectionController
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}
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func emptyView(for listAdapter: IGListAdapter) -> UIView? {
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return nil
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}
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// MARK: - IGListSingleSectionControllerDelegate
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func didSelect(_ sectionController: IGListSingleSectionController) {
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let section = adapter.section(for: sectionController) + 1
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let alert = UIAlertController(title: "Section \(section) was selected 🎉", message: nil, preferredStyle: .alert)
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alert.addAction(UIAlertAction(title: "Dismiss", style: .default, handler: nil))
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present(alert, animated: true, completion: nil)
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}
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}
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