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

   1 //----------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 //----------------------------------------------------------------
   4 namespace System.Activities.Presentation.Internal.PropertyEditing.Editors
   5 {
   6
   7     using System;
   8     using System.Collections;
   9     using System.Diagnostics;
  10     using System.Diagnostics.CodeAnalysis;
  11     using System.Globalization;
  12     using System.Windows.Data;
  13     using System.Windows;
  14     using System.Activities.Presentation.Internal.PropertyEditing.Model;
  15     using System.Activities.Presentation.Internal.PropertyEditing.Resources;
  16     using System.Activities.Presentation.PropertyEditing;
  17     using System.Activities.Presentation;
  18     using System.Runtime;
  19
  20     // <summary>
  21     // Checks the property entry and converts it
  22     // to appropriate FlowDirection value which is returned back.
  23     // </summary>
  24     [SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")]
  25     internal class RTLValueConveter : IMultiValueConverter
  26     {
  27         public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture) {
  28             FlowDirection returnValue = FlowDirection.LeftToRight;
  29             Fx.Assert(values.Length == 3, "Incorrect values in the MultiValueConverter!");
  30             if (values.Length == 3)
  31             {
  32                 ModelPropertyEntry propertyEntry = values[1] as ModelPropertyEntry;
  33                 if (propertyEntry != null)
  34                 {
  35                     if (!propertyEntry.DisplayName.Equals("Name"))
  36                     {
  37                         if (targetType == typeof(FlowDirection))
  38                         {
  39                             object propertyValue = values[0];
  40                             if (propertyValue == null || propertyValue.GetType() == typeof(string))
  41                             {
  42                                 //customize it to controls FlowDirection Property
  43                                 returnValue = (FlowDirection)PropertyInspectorResources.GetResources()["SelectedControlFlowDirectionRTL"];
  44                             }
  45                         }
  46                     }
  47                 }
  48             }
  49             return returnValue;
  50         }
  51
  52
  53         public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture) {
  54             throw FxTrace.Exception.AsError(new NotImplementedException());
  55         }
  56
  57     }
  58 }