taler-ios

iOS apps for GNU Taler (wallet)
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View+Notification.swift (2769B)

      1 //  MIT License
      2 //  Copyright © John Sundell
      3 //
      4 //  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
      5 //  and associated documentation files (the "Software"), to deal in the Software without restriction,
      6 //  including without limitation the rights to use, copy, modify, merge, publish, distribute,
      7 //  sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
      8 //  furnished to do so, subject to the following conditions:
      9 //
     10 //  The above copyright notice and this permission notice shall be included in all copies or
     11 //  substantial portions of the Software.
     12 //
     13 //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
     14 //  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     15 //  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
     16 //  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     17 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     18 //
     19 import SwiftUI
     20 
     21 extension View {
     22     func onNotification(
     23         _ notificationName: Notification.Name,
     24         perform action: @escaping () -> Void
     25     ) -> some View {
     26         onReceive(NotificationCenter.default
     27             .publisher(for: notificationName)
     28         ) { _ in
     29             action()
     30         }
     31     }
     32     func onNotification(
     33         _ notificationName: Notification.Name,
     34         perform action: @escaping (_ notification: Notification) -> Void
     35     ) -> some View {
     36         onReceive(NotificationCenter.default
     37             .publisher(for: notificationName)
     38         ) { notification in
     39             action(notification)
     40         }
     41     }
     42 
     43     func onNotificationM(       // M for main thread
     44         _ notificationName: Notification.Name,
     45         perform action: @escaping () -> Void
     46     ) -> some View {
     47         onReceive(NotificationCenter.default
     48             .publisher(for: notificationName)
     49             .receive(on: RunLoop.main)
     50         ) { _ in
     51             action()
     52         }
     53     }
     54 
     55     func onNotificationM(       // M for main thread
     56         _ notificationName: Notification.Name,
     57         perform action: @escaping (_ notification: Notification) -> Void
     58     ) -> some View {
     59         onReceive(NotificationCenter.default
     60             .publisher(for: notificationName)
     61             .receive(on: RunLoop.main)
     62         ) { notification in
     63             action(notification)
     64         }
     65     }
     66 
     67     @MainActor func onAppEnteredBackground(
     68         perform action: @escaping () -> Void
     69     ) -> some View {
     70         onNotification(
     71             UIApplication.didEnterBackgroundNotification,
     72             perform: action
     73         )
     74     }
     75 }