Tokamak/Sources/TokamakCore/Styles/ButtonStyle.swift

49 lines
1.4 KiB
Swift

// Copyright 2020 Tokamak contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Created by Gene Z. Ragan on 07/22/2020.
public protocol ButtonStyle {
associatedtype Body: View
@ViewBuilder
func makeBody(configuration: Self.Configuration) -> Self.Body
typealias Configuration = ButtonStyleConfiguration
}
public struct ButtonStyleConfiguration {
public struct Label: View {
public let body: AnyView
}
public let role: ButtonRole?
public let label: ButtonStyleConfiguration.Label
public let isPressed: Bool
}
struct AnyButtonStyle: ButtonStyle {
let bodyClosure: (ButtonStyleConfiguration) -> AnyView
let type: Any.Type
init<S: ButtonStyle>(_ style: S) {
type = S.self
bodyClosure = {
AnyView(style.makeBody(configuration: $0))
}
}
func makeBody(configuration: Configuration) -> some View {
bodyClosure(configuration)
}
}