mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/Base/Core/Internal/PropertyEditing/FromExpression/Framework/Data/ComposingConverter.cs

   1 // -------------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation. All Rights Reserved.
   3 // -------------------------------------------------------------------
   4 //From \\authoring\Sparkle\Source\1.0.1083.0\Common\Source\Framework\Data
   5 namespace System.Activities.Presentation.Internal.PropertyEditing.FromExpression.Framework.Data
   6 {
   7     using System;
   8     using System.Collections.Generic;
   9     using System.ComponentModel;
  10     using System.Globalization;
  11     using System.Windows;
  12     using System.Windows.Data;
  13     using System.Diagnostics.CodeAnalysis;
  14
  15     [SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")]
  16     internal sealed class ComposingConverter : IValueConverter
  17     {
  18         private List<IValueConverter> converters = new List<IValueConverter>();
  19         [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
  20
  21         public List<IValueConverter> Converters
  22         {
  23             get { return this.converters; }
  24         }
  25
  26         // IValueConverter Members
  27         public object Convert(object o, Type targetType, object parameter, CultureInfo culture)
  28         {
  29             for (int i = 0; i < this.converters.Count; i++)
  30             {
  31                 o = converters[i].Convert(o, targetType, parameter, culture);
  32             }
  33             return o;
  34         }
  35
  36         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
  37         {
  38             for (int i = this.converters.Count - 1; i >= 0; i--)
  39             {
  40                 value = converters[i].ConvertBack(value, targetType, parameter, culture);
  41             }
  42             return value;
  43         }
  44     }
  45 }