src/Tizen.NUI/src/public/Template/DataTemplateSelector.cs

   1 using System;
   2 using System.ComponentModel;
   3 using System.Collections.Generic;
   4
   5 namespace Tizen.NUI.Binding
   6 {
   7     [EditorBrowsable(EditorBrowsableState.Never)]
   8     public abstract class DataTemplateSelector : DataTemplate
   9     {
  10         Dictionary<Type, DataTemplate> _dataTemplates = new Dictionary<Type, DataTemplate>();
  11
  12         [EditorBrowsable(EditorBrowsableState.Never)]
  13         public DataTemplate SelectTemplate(object item, BindableObject container)
  14         {
  15             DataTemplate dataTemplate = null;
  16             if (_dataTemplates.TryGetValue(item.GetType(), out dataTemplate))
  17             {
  18                 return dataTemplate;
  19             }
  20
  21             dataTemplate = OnSelectTemplate(item, container);
  22             if (dataTemplate is DataTemplateSelector)
  23                 throw new NotSupportedException(
  24                     "DataTemplateSelector.OnSelectTemplate must not return another DataTemplateSelector");
  25
  26             return dataTemplate;
  27         }
  28
  29         [EditorBrowsable(EditorBrowsableState.Never)]
  30         protected abstract DataTemplate OnSelectTemplate(object item, BindableObject container);
  31     }
  32 }