92 lines
3.0 KiB
Swift
92 lines
3.0 KiB
Swift
import Meta
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public enum Backend2 {
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public struct TestWidget2: BackendWidget {
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public init() { }
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public func container<Storage>(modifiers: [(AnyView) -> AnyView], type: Storage.Type) -> ViewStorage where Storage: AppStorage {
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print("Init test widget 2")
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let storage = ViewStorage(nil)
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storage.fields["test"] = 0
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return storage
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}
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public func update<Storage>(_ storage: ViewStorage, modifiers: [(AnyView) -> AnyView], updateProperties: Bool, type: Storage.Type) {
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print("Update test widget 2 (#\(storage.fields["test"] ?? ""))")
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storage.fields["test"] = (storage.fields["test"] as? Int ?? 0) + 1
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}
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}
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public struct TestWidget4: BackendWidget {
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public init() { }
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public func container<Storage>(modifiers: [(AnyView) -> AnyView], type: Storage.Type) -> ViewStorage where Storage: AppStorage {
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print("Init test widget 4")
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let storage = ViewStorage(nil)
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storage.fields["test"] = 0
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return storage
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}
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public func update<Storage>(_ storage: ViewStorage, modifiers: [(AnyView) -> AnyView], updateProperties: Bool, type: Storage.Type) {
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print("Update test widget 4 (#\(storage.fields["test"] ?? ""))")
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storage.fields["test"] = (storage.fields["test"] as? Int ?? 0) + 1
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}
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}
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public struct Wrapper: BackendWidget, Meta.Wrapper {
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var content: Body
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public init(@ViewBuilder content: @escaping () -> Body) {
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self.content = content()
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}
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public func container<Storage>(modifiers: [(any Meta.AnyView) -> any Meta.AnyView], type: Storage.Type) -> Meta.ViewStorage where Storage : Meta.AppStorage {
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let storage = ViewStorage(nil)
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storage.content = [.mainContent: content.storages(modifiers: modifiers, type: type)]
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return storage
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}
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public func update<Storage>(_ storage: Meta.ViewStorage, modifiers: [(any Meta.AnyView) -> any Meta.AnyView], updateProperties: Bool, type: Storage.Type) where Storage : Meta.AppStorage {
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guard let storages = storage.content[.mainContent] else {
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return
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}
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content.update(storages, modifiers: modifiers, updateProperties: updateProperties, type: type)
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}
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}
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public protocol BackendWidget: Widget { }
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public protocol BackendSceneElement: SceneElement { }
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public class Backend2App: AppStorage {
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public typealias SceneElementType = BackendSceneElement
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public typealias WidgetType = BackendWidget
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public typealias WrapperType = Wrapper
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public var app: () -> any App
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public var storage: StandardAppStorage = .init()
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public required init(id: String, app: @escaping () -> any App) {
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self.app = app
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}
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public func run(setup: @escaping () -> Void) {
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setup()
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}
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public func quit() {
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fatalError("Quit")
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}
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}
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}
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