98 lines
3.0 KiB
Swift
98 lines
3.0 KiB
Swift
import Meta
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public enum Backend1 {
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public struct TestWidget1: BackendWidget {
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public init() { }
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public var debugTreeContent: [(String, body: Body)] {
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[]
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}
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public var debugTreeParameters: [(String, value: CustomStringConvertible)] {
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[]
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}
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public func container<WidgetType>(modifiers: [(AnyView) -> AnyView], type: WidgetType.Type) -> ViewStorage {
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print("Init test widget 1")
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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<WidgetType>(_ storage: ViewStorage, modifiers: [(AnyView) -> AnyView], updateProperties: Bool, type: WidgetType.Type) {
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print("Update test widget 1 (#\(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 TestWidget3: BackendWidget {
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public init() { }
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public var debugTreeContent: [(String, body: Body)] {
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[]
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}
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public var debugTreeParameters: [(String, value: CustomStringConvertible)] {
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[]
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}
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public func container<WidgetType>(modifiers: [(AnyView) -> AnyView], type: WidgetType.Type) -> ViewStorage {
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print("Init test widget 3")
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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<WidgetType>(_ storage: ViewStorage, modifiers: [(AnyView) -> AnyView], updateProperties: Bool, type: WidgetType.Type) {
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print("Update test widget 3 (#\(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 Button: BackendWidget {
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var label: String
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var action: () -> Void
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public init(_ label: String, action: @escaping () -> Void) {
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self.label = label
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self.action = action
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}
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public var debugTreeContent: [(String, body: Body)] {
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[]
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}
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public var debugTreeParameters: [(String, value: any CustomStringConvertible)] {
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_ = action
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return [("label", value: label), ("action", value: "() -> Void")]
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}
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public func container<WidgetType>(modifiers: [(any AnyView) -> any AnyView], type: WidgetType.Type) -> ViewStorage {
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print("Init button")
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Task {
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try await Task.sleep(nanoseconds: 1_000_000_000)
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action()
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}
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return .init(nil)
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}
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public func update<WidgetType>(_ storage: ViewStorage, modifiers: [(any AnyView) -> any AnyView], updateProperties: Bool, type: WidgetType.Type) {
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if updateProperties {
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print("Update button (label = \(label))")
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} else {
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print("Do not update button (label = \(label))")
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}
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}
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}
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public protocol BackendWidget: Widget { }
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}
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