src/Tizen.NUI/src/internal/XamlBinding/DataTemplateSelector.cs

   1 using System;
   2 using System.Collections.Generic;
   3
   4 namespace Tizen.NUI.Binding
   5 {
   6     internal abstract class DataTemplateSelector : DataTemplate
   7     {
   8         Dictionary<Type, DataTemplate> _dataTemplates = new Dictionary<Type, DataTemplate>();
   9
  10         public DataTemplate SelectTemplate(object item, BindableObject container)
  11         {
  12             // var listView = container as ListView;
  13
  14             // var recycle = listView == null ? false :
  15             //  (listView.CachingStrategy & ListViewCachingStrategy.RecycleElementAndDataTemplate) ==
  16             //          ListViewCachingStrategy.RecycleElementAndDataTemplate;
  17
  18             DataTemplate dataTemplate = null;
  19             // if (recycle && _dataTemplates.TryGetValue(item.GetType(), out dataTemplate))
  20                 // return dataTemplate;
  21
  22             dataTemplate = OnSelectTemplate(item, container);
  23             if (dataTemplate is DataTemplateSelector)
  24                 throw new NotSupportedException(
  25                     "DataTemplateSelector.OnSelectTemplate must not return another DataTemplateSelector");
  26
  27             // if (recycle)
  28             // {
  29             //  if (!dataTemplate.CanRecycle)
  30             //          throw new NotSupportedException(
  31             //                  "RecycleElementAndDataTemplate requires DataTemplate activated with ctor taking a type.");
  32
  33             //  _dataTemplates[item.GetType()] = dataTemplate;
  34             // }
  35
  36             return dataTemplate;
  37         }
  38
  39         protected abstract DataTemplate OnSelectTemplate(object item, BindableObject container);
  40     }
  41 }