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Reimplementation of SwiftUI EditMode enum for macOS
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| // Documentation comments are copied from the official documentation for iOS. | |
| import SwiftUI | |
| #if os(macOS) | |
| /// Reimplemenation of [EditMode](https://developer.apple.com/documentation/swiftui/editmode) for macOS. | |
| public enum EditMode { | |
| /// The user can edit the view content. | |
| case active | |
| /// The user can’t edit the view content. | |
| case inactive | |
| /// The view is in a temporary edit mode. | |
| case transient | |
| } | |
| extension EditMode: Equatable {} | |
| extension EditMode: Hashable {} | |
| extension EditMode { | |
| /// Indicates whether a view is being edited. | |
| /// | |
| /// This property returns `true` if the mode is something other than inactive. | |
| public var isEditing: Bool { | |
| self != .inactive | |
| } | |
| } | |
| private struct EditModeEnvironmentKey: EnvironmentKey { | |
| static var defaultValue: Binding<EditMode>? | |
| } | |
| extension EnvironmentValues { | |
| /// An indication of whether the user can edit the contents of a view associated with this environment. | |
| public var editMode: Binding<EditMode>? { | |
| get { | |
| self[EditModeEnvironmentKey.self] | |
| } | |
| set { | |
| self[EditModeEnvironmentKey.self] = newValue | |
| } | |
| } | |
| } | |
| #endif | |
| // Below extension also don't exist on iOS, so keep them outside of the compiler directive block. | |
| extension EditMode { | |
| /// Toggles the edit mode between `.inactive` and `.active`. | |
| public mutating func toggle() { | |
| switch self { | |
| case .inactive: self = .active | |
| case .active: self = .inactive | |
| case .transient: break | |
| #if os(iOS) | |
| @unknown default: break | |
| #endif | |
| } | |
| } | |
| } | |
| extension Optional where Wrapped == Binding<EditMode> { | |
| /// Convenience property so call sites can use a clean `editMode.isEditing` instead of the | |
| /// ugly boilerplate `editMode?.wrappedValue.isEditing == true`. | |
| public var isEditing: Bool { | |
| self?.wrappedValue.isEditing == true | |
| } | |
| } |
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