### Description Need an option, like **IsActive**, to find out which `Window` is currently active in a multiwindow app. And it should dynamically get updated as soon as the Window change its state. ### Public API Changes ```cs var window = Application.Current?.Windows.FirstOrDefault(x => x.IsActive); var page = await window?.Page?.DisplayAlert("Title", "Message", "OK"); ``` ### Intended Use-Case For example, this info is necessary to route dialogs on top of that window.