40 lines
1.1 KiB
Swift
40 lines
1.1 KiB
Swift
//
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// Copyright 2021-2024 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only
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// Please see LICENSE in the repository root for full details.
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//
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import Combine
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import Foundation
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/// Provides the theme and theme updates to SwiftUI.
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///
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/// Replaces the old ThemeObserver. Riot app can push updates to this class
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/// removing the dependency of this class on the `ThemeService`.
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class ThemePublisher: ObservableObject {
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private static var _shared: ThemePublisher?
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static var shared: ThemePublisher {
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if _shared == nil {
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configure(themeId: .light)
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}
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return _shared!
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}
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@Published private(set) var theme: ThemeSwiftUI
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static func configure(themeId: ThemeIdentifier) {
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_shared = ThemePublisher(themeId: themeId)
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}
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init(themeId: ThemeIdentifier) {
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_theme = Published(initialValue: themeId.themeSwiftUI)
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}
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func republish(themeIdPublisher: AnyPublisher<ThemeIdentifier, Never>) {
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themeIdPublisher
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.map(\.themeSwiftUI)
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.assign(to: &$theme)
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}
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}
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