| 1 | import RastrilloNative |
| 2 | import SwiftUI |
| 3 | |
| 4 | /// A thin inset bar shown while `origin` is offline. Entering the offline |
| 5 | /// state is announced to assistive technologies; leaving it is not. |
| 6 | /// |
| 7 | /// Pass `summary` once the app's edits are kept in an `Outbox`: the banner |
| 8 | /// then says they are saved on this device, which is only true from then on. |
| 9 | public struct NativeOfflineBanner: View { |
| 10 | private let connectivity: NativeConnectivity |
| 11 | private let origin: URL |
| 12 | private let message: String |
| 13 | |
| 14 | @MainActor public init(connectivity: NativeConnectivity? = nil, origin: URL, message: String? = nil) { |
| 15 | self.connectivity = connectivity ?? .shared; self.origin = origin |
| 16 | self.message = message ?? NativeSyncStrings.kit.offlineWaiting |
| 17 | } |
| 18 | |
| 19 | /// The durable wording, for an app whose changes go through an outbox. |
| 20 | @MainActor public init(connectivity: NativeConnectivity? = nil, origin: URL, summary: OutboxSummary, |
| 21 | strings: NativeSyncStrings = .kit) { |
| 22 | self.init(connectivity: connectivity, origin: origin, message: strings.offlineDurable) |
| 23 | } |
| 24 | |
| 25 | public var body: some View { |
| 26 | let offline = connectivity.isOffline(origin) |
| 27 | Group { |
| 28 | if offline { |
| 29 | Label(message, systemImage: "wifi.slash") |
| 30 | .font(.callout) |
| 31 | .frame(maxWidth: .infinity) |
| 32 | .padding(.horizontal, 12).padding(.vertical, 6) |
| 33 | .background(.bar) |
| 34 | .accessibilityElement(children: .combine) |
| 35 | } |
| 36 | } |
| 37 | .onChange(of: offline) { _, now in |
| 38 | if now { AccessibilityNotification.Announcement(message).post() } |
| 39 | } |
| 40 | } |
| 41 | } |
| 42 | |
amadan