CryptoTrackerTickerTextRefreshView.swift

struct TickerTextView: View {
  let ticker: Ticker
  var body: some View {
    Group {
      Text(ticker.market.name)
      Text("""
        \(ticker.base.rawValue) <-> \(ticker.target)
        \(ticker.last)
        """)
        .font(.largeTitle)
        .multilineTextAlignment(.center)
      Text("Volume: \(ticker.volume)")
    }
  }
}

struct RefreshView: View {
  @EnvironmentObject var dataModel: DataModel
  var body: some View {
    Group {
      Button("↻ Refresh", action: dataModel.refresh)
      Text(dataModel.lastRefreshed)
    }
  }
}