mirror of
https://github.com/vector-im/element-ios.git
synced 2024-10-01 16:52:40 +00:00
51 lines
1.8 KiB
Swift
51 lines
1.8 KiB
Swift
//
|
|
// Copyright 2021 New Vector Ltd
|
|
//
|
|
// 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.
|
|
//
|
|
|
|
import Foundation
|
|
import SwiftUI
|
|
|
|
/// An Environment Key for retrieving runtime dependencies.
|
|
///
|
|
/// Dependencies are to be injected into `ObservableObjects`
|
|
/// that are owned by a View (i.e. `@StateObject`'s, such as ViewModels owned by the View).
|
|
private struct DependencyContainerKey: EnvironmentKey {
|
|
static let defaultValue = DependencyContainer()
|
|
}
|
|
|
|
@available(iOS 14.0, *)
|
|
extension EnvironmentValues {
|
|
var dependencies: DependencyContainer {
|
|
get { self[DependencyContainerKey.self] }
|
|
set { self[DependencyContainerKey.self] = newValue }
|
|
}
|
|
}
|
|
|
|
@available(iOS 14.0, *)
|
|
extension View {
|
|
|
|
/// A modifier for adding a dependency to the SwiftUI view hierarchy's dependency container.
|
|
///
|
|
/// Important: When adding a dependency to cast it to the type in which it will be injected.
|
|
/// So if adding `MockDependency` but type at injection is `Dependency` remember to cast
|
|
/// to `Dependency` first.
|
|
/// - Parameter dependency: The dependency to add.
|
|
/// - Returns: The wrapped view that now includes the dependency.
|
|
func addDependency<T>(_ dependency: T) -> some View {
|
|
transformEnvironment(\.dependencies) { container in
|
|
container.register(dependency: dependency)
|
|
}
|
|
}
|
|
}
|