using System; using Microsoft.UI.Xaml; using Microsoft.UI.Xaml.Controls; using Wino.Mail.ViewModels.Data; namespace Wino.Mail.WinUI.Controls.ListView; public partial class WinoMailItemTemplateSelector : DataTemplateSelector { public DataTemplate? SingleMailItemTemplate { get; set; } public DataTemplate? ThreadMailItemTemplate { get; set; } protected override DataTemplate SelectTemplateCore(object item, DependencyObject container) { if (item is MailItemViewModel) return SingleMailItemTemplate ?? throw new Exception($"Missing template for single mail items."); else if (item is ThreadMailItemViewModel) return ThreadMailItemTemplate ?? throw new Exception($"Missing template for thread mail items."); return base.SelectTemplateCore(item, container); } }