mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/Base/Core/Internal/PropertyEditing/Editors/ImageSourceToImageConverter.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.Globalization;
   8     using System.Diagnostics.CodeAnalysis;
   9     using System.Windows.Controls;
  10     using System.Windows.Data;
  11     using System.Windows.Media;
  12
  13     using System.Activities.Presentation.Internal.PropertyEditing.FromExpression.Framework.PropertyInspector;
  14     using System.Activities.Presentation;
  15
  16     // <summary>
  17     // Converter that takes an object and either returns it
  18     // or wraps it in an Image control if the object is of type ImageSource.
  19     // This class gets instantiated from XAML.
  20     // </summary>
  21     [SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")]
  22     internal class ImageSourceToImageConverter : IValueConverter
  23     {
  24         // IValueConverter Members
  25
  26         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
  27         {
  28
  29             ImageSource imageSource = value as ImageSource;
  30
  31             if (imageSource == null)
  32             {
  33                 return value;
  34             }
  35
  36             Image image = new Image();
  37             image.Source = imageSource;
  38             return image;
  39         }
  40
  41         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
  42         {
  43             throw FxTrace.Exception.AsError(new InvalidOperationException());
  44         }
  45
  46     }
  47 }