mirror of
https://github.com/tappollo/IGListKit.git
synced 2026-06-10 23:29:26 +08:00
49bf24693d
Summary: Created a new demo that shows off how to: - Inject dependencies to section controllers - Objects shared between section controllers - Things that aren't the core "object" - Announce changes from the VC that make their way to the section controllers - Without calling updates Closes https://github.com/Instagram/IGListKit/pull/612 Differential Revision: D4827188 Pulled By: rnystrom fbshipit-source-id: 9575df0e105fd06f9a59db49432b19e8b824e0e3
68 lines
2.4 KiB
Swift
68 lines
2.4 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 AnnouncingDepsViewController: UIViewController, IGListAdapterDataSource {
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lazy var adapter: IGListAdapter = {
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return IGListAdapter(updater: IGListAdapterUpdater(), viewController: self, workingRangeSize: 1)
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}()
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let collectionView = UICollectionView(frame: .zero, collectionViewLayout: UICollectionViewFlowLayout())
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let data: [NSNumber] = Array(0..<20).map { $0 as NSNumber }
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let announcer = IncrementAnnouncer()
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override func viewDidLoad() {
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super.viewDidLoad()
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collectionView.backgroundColor = UIColor(white: 0.95, alpha: 1)
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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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// disable prefetching so cells are configured as they come on screen
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if #available(iOS 10.0, *) {
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collectionView.isPrefetchingEnabled = false
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}
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navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .add,
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target: self,
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action: #selector(AnnouncingDepsViewController.onAdd))
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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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func onAdd() {
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announcer.increment()
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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
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}
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func listAdapter(_ listAdapter: IGListAdapter, sectionControllerFor object: Any) -> IGListSectionController {
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return ListeningSectionController(announcer: announcer)
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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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}
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