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Comments (4)

DevSrSouza avatar DevSrSouza commented on May 23, 2024

This won't work because it Navigator is only present inside the Navigator() {} declaration.

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MahmoudMabrok avatar MahmoudMabrok commented on May 23, 2024

@DevSrSouza so how can I handle on BAck

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DevSrSouza avatar DevSrSouza commented on May 23, 2024

You can create a custom BackPressureHandler for desktop.

object BackPressureHandler {
   private val callbacks = mutableSetOf<OnBackPress>()
  fun register(onBackPress: OnBackPress) { callbacks += onBackPress }
  fun unregister(onBackPress: OnBackPress) { callbacks.remove(onBackPress) }
  
  fun execute() { for(callback in callbacks) callback() }
}

fun interface OnBackPress {
   fun onBackPressed()
}

Your code:

Window(
        title = "GithubActivity",
        state = rememberWindowState(width = 800.dp, height = 600.dp),
        onCloseRequest = ::exitApplication,
        onKeyEvent = {
            if (it.key == Key.Escape){
+                BackPressureHandler.execute()
            }
            false
        }
    ) {
        window.minimumSize = Dimension(350, 600)
        AppWithCommonTheme()
    }

Navigator(
    ...
) { navigator ->
   DisposableEffect {
      val observer = OnBackPress {
           navigator.pop()
      }

      BackPressureHandler.register(observer)
      
      onDispose { BackPressureHandler.unregister(observer) }
   }
   ....
}

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