public static async Task <T> OpenAsyncQuery <T>(this IScreenOpener opener, IQuery <T> query, CancellationToken cancelToken = default(CancellationToken))
where T : class, IScreenViewModel
{
var viewModel = await opener.Send(query, cancelToken).ConfigureAwait(false);
await opener.OpenAsync(viewModel).ConfigureAwait(false);
return(viewModel);
}
public static async Task <T> OpenAsyncQueryCached <T>(this IScreenOpener opener, IQuery <T> query)
where T : class, IScreenViewModel
{
var t = typeof(T);
if (cached.ContainsKey(t))
{
var vm = cached[t];
if (vm.IsOpen)
{
await vm.Activate.ExecuteAsyncTask().ConfigureAwait(false);
return((T)vm);
}
}
var viewModel = await opener.Send(query).ConfigureAwait(false);
cached.Add(t, viewModel);
await opener.OpenAsync(viewModel).ConfigureAwait(false);
HandleClosing(viewModel, t);
return(viewModel);
}
