69 lines
1.6 KiB
Swift
69 lines
1.6 KiB
Swift
// Copyright 2019-2020 Tokamak contributors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Created by Carson Katri on 6/30/20.
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//
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import TokamakShim
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class TestEnvironment: ObservableObject {
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@Published
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var envTest = "Hello, world!"
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init() {}
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}
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struct EnvironmentObjectDemo: View {
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@EnvironmentObject
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var testEnv: TestEnvironment
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var body: some View {
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Button(testEnv.envTest) {
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testEnv.envTest = "EnvironmentObject modified."
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}
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}
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}
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extension ColorScheme: CustomStringConvertible {
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public var description: String {
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switch self {
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case .dark: return "dark"
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case .light: return "light"
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@unknown default: return "unknown"
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}
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}
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}
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struct EnvironmentDemo: View {
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@Environment(\.colorScheme)
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var colorScheme
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@Environment(\.font)
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var font
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@EnvironmentObject
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var testEnv: TestEnvironment
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var body: some View {
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VStack {
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Text("`colorScheme` is \(colorScheme.description)")
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if let font = font {
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Text("`font` environment is \(String(describing: font))")
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}
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Text(testEnv.envTest)
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EnvironmentObjectDemo()
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}
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}
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}
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