mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/Base/Core/Internal/PropertyEditing/Editors/SubPropertyViewEditor.cs

   1 //----------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 //----------------------------------------------------------------
   4 namespace System.Activities.Presentation.Internal.PropertyEditing.Editors
   5 {
   6     using System;
   7     using System.Windows;
   8     using System.Activities.Presentation.PropertyEditing;
   9     using System.Activities.Presentation.Internal.PropertyEditing.Resources;
  10
  11     // <summary>
  12     // SubPropertyViewEditor is a "fake" value editor.  We only use it as a marker that exposes
  13     // MarkerSubPropertyTemplate as its editor DataTemplates.  The XAML code for PropertyContainer
  14     // specifically looks for these markers and it switches its InlineRowTemplate to a
  15     // sub-property-specific inline row template when found.
  16     // </summary>
  17     internal class SubPropertyViewEditor : ExtendedPropertyValueEditor
  18     {
  19
  20         private static SubPropertyViewEditor _instance;
  21
  22         // This class can have a private ctor because we instantiate it through code,
  23         // not through XAML or attributes
  24         private SubPropertyViewEditor()
  25             : base(
  26             PropertyInspectorResources.GetResources()["MarkerSubPropertyTemplate"] as DataTemplate,
  27             PropertyInspectorResources.GetResources()["MarkerSubPropertyTemplate"] as DataTemplate)
  28         {
  29         }
  30
  31         // <summary>
  32         // Gets the static instance of this class
  33         // </summary>
  34         public static SubPropertyViewEditor Instance
  35         {
  36             get {
  37                 if (_instance == null)
  38                 {
  39                     _instance = new SubPropertyViewEditor();
  40                 }
  41
  42                 return _instance;
  43             }
  44         }
  45     }
  46 }