ViewLocator.fs

namespace Todo

open System
open Avalonia.Controls
open Avalonia.Controls.Templates

open Todo.ViewModels

type ViewLocator() =
    interface IDataTemplate with
        member _.SupportsRecycling = false
        
        member _.Build(data) =
            let name = data.GetType().FullName.Replace("ViewModel", "View")
            let typ = Type.GetType(name)
            match typ with
            | null -> upcast TextBlock(Text = sprintf "Not Found: %s" name)
            | _ -> downcast Activator.CreateInstance(typ)

        member _.Match(data) = data :? ViewModelBase