mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-01 10:27:19 +00:00
a7855d15ac
Summary: You are already using `final class` as the default swift declaration as I guess most people agree this is best practice for classes you are not planning to inherit from :) So I just made the example code more consistent. I will not add much more reasoning to why, other than open source projects like this is a _big_ inspirations and starting ground to play with swift for new develoeprs joining the iOS community. Nuding them to ask the right questions (composition vs inheritance) early could only be a good thing (?) - [X] All tests pass. Demo project builds and runs. - [X] No new tests. No new classes. - [X] No breaking changes. - [X] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md) Closes https://github.com/Instagram/IGListKit/pull/539 Differential Revision: D4696591 Pulled By: rnystrom fbshipit-source-id: 73539b907452ec0cb7a8e842a95cb4fd27138f2f
84 lines
2.7 KiB
Swift
84 lines
2.7 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 DemoItem: NSObject {
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let name: String
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let controllerClass: UIViewController.Type
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let controllerIdentifier: String?
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init(
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name: String,
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controllerClass: UIViewController.Type,
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controllerIdentifier: String? = nil
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) {
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self.name = name
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self.controllerClass = controllerClass
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self.controllerIdentifier = controllerIdentifier
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}
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}
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extension DemoItem: IGListDiffable {
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func diffIdentifier() -> NSObjectProtocol {
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return name as NSObjectProtocol
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}
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func isEqual(toDiffableObject object: IGListDiffable?) -> Bool {
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if self === object { return true }
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guard let object = object as? DemoItem else { return false }
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return controllerClass == object.controllerClass && controllerIdentifier == object.controllerIdentifier
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}
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}
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final class DemoSectionController: IGListSectionController, IGListSectionType {
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var object: DemoItem?
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func numberOfItems() -> Int {
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return 1
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}
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func sizeForItem(at index: Int) -> CGSize {
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return CGSize(width: collectionContext!.containerSize.width, height: 55)
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}
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func cellForItem(at index: Int) -> UICollectionViewCell {
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let cell = collectionContext!.dequeueReusableCell(of: LabelCell.self, for: self, at: index) as! LabelCell
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cell.label.text = object?.name
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return cell
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}
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func didUpdate(to object: Any) {
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self.object = object as? DemoItem
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}
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func didSelectItem(at index: Int) {
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if let identifier = object?.controllerIdentifier {
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let storyboard = UIStoryboard(name: "Demo", bundle: nil)
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let controller = storyboard.instantiateViewController(withIdentifier: identifier)
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controller.title = object?.name
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viewController?.navigationController?.pushViewController(controller, animated: true)
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} else if let controller = object?.controllerClass.init() {
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controller.title = object?.name
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viewController?.navigationController?.pushViewController(controller, animated: true)
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}
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}
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}
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