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 }