public ComposerViewModel(string title, Func <string, Task> saveFunc, IAlertDialogFactory alertDialogFactory)
{
Title = title;
SaveCommand = ReactiveCommand.CreateAsyncTask(
this.WhenAnyValue(x => x.Text).Select(x => !string.IsNullOrEmpty(x)),
t => saveFunc(Text));
SaveCommand.AlertExecuting(alertDialogFactory, "Saving...");
SaveCommand.Subscribe(x => Dismiss());
DismissCommand = ReactiveCommand.CreateAsyncTask(async t =>
{
if (string.IsNullOrEmpty(Text))
{
return(true);
}
return(await alertDialogFactory.PromptYesNo("Discard Comment?", "Are you sure you want to discard this comment?"));
});
DismissCommand.Where(x => x).Subscribe(_ => Dismiss());
}