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Easy way to populate UIView properties with data.
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| // | |
| // ViewAdapter.swift | |
| // | |
| // Created by Valerio Mazzeo on 10/08/2016. | |
| // Copyright © 2016 Valerio Mazzeo. All rights reserved. | |
| // | |
| import UIKit | |
| /** | |
| Types adopting the `ViewAdapter` protocol provides a way to feed data from a `Model` to a `View`. | |
| This is particularly useful for `UITableViewCell` and `UICollectionViewCell` cells which have to be populated by a data source. | |
| Adapter as struct: | |
| ``` | |
| struct MyCellStoreAdapter: ViewAdapter { | |
| func configure(view: MyCell, with element: Store) -> Void { | |
| view.textLabel?.text = element.name | |
| } | |
| } | |
| ``` | |
| Adapter as nested struct in the cell | |
| ``` | |
| extension MyCell { | |
| public struct StoreAdapter: ViewAdapter { | |
| public func configure(view: MyCell, with element: Store) -> Void { | |
| view.textLabel?.text = element.name | |
| } | |
| } | |
| } | |
| ``` | |
| Adapter as computed cell static property using `AnyViewAdapter` | |
| ``` | |
| extension MyCell { | |
| public static var storeAdapter: AnyViewAdapter<MyCell, Store> { | |
| return AnyViewAdapter { view, element in | |
| view.textLabel?.text = element.name | |
| } | |
| } | |
| } | |
| ``` | |
| Adapter as nested computed cell static property using `AnyViewAdapter` | |
| ``` | |
| extension MyCell { | |
| public struct Adapter { | |
| public static var store: AnyViewAdapter<MyCell, Store> { | |
| return AnyViewAdapter { view, element in | |
| view.textLabel?.text = element.name | |
| } | |
| } | |
| } | |
| } | |
| ``` | |
| */ | |
| public protocol ViewAdapter { | |
| associatedtype ViewType: UIView | |
| associatedtype Model | |
| func configure(view: ViewType, with element: Model) -> Void | |
| } | |
| public struct AnyViewAdapter<V: UIView, M>: ViewAdapter { | |
| public typealias ViewType = V | |
| public typealias Model = M | |
| private let body: (view: ViewType, element: Model) -> Void | |
| /** | |
| Creates a `ViewAdapter` instance whose `configure` method invokes | |
| `body`. | |
| */ | |
| public init(body: (view: ViewType, element: Model) -> Void) { | |
| self.body = body | |
| } | |
| public func configure(view: ViewType, with element: Model) -> Void { | |
| self.body(view: view, element: element) | |
| } | |
| } |
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