mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/Annotations/UIElementToAnnotationIndicatorAdapter.cs

   1 //----------------------------------------------------------------
   2 // <copyright company="Microsoft Corporation">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //----------------------------------------------------------------
   6
   7 namespace System.Activities.Presentation.Annotations
   8 {
   9     using System;
  10     using System.ComponentModel;
  11     using System.Windows;
  12
  13     internal class UIElementToAnnotationIndicatorAdapter : IAnnotationIndicator
  14     {
  15         private UIElement element;
  16
  17         public UIElementToAnnotationIndicatorAdapter(UIElement element)
  18         {
  19             if (element == null)
  20             {
  21                 throw FxTrace.Exception.AsError(new ArgumentNullException("element"));
  22             }
  23
  24             this.element = element;
  25         }
  26
  27         public event EventHandler IsMouseOverChanged
  28         {
  29             add
  30             {
  31                 DependencyPropertyDescriptor descriptor = DependencyPropertyDescriptor.FromProperty(UIElement.IsMouseOverProperty, typeof(UIElement));
  32                 descriptor.AddValueChanged(this.element, value);
  33             }
  34
  35             remove
  36             {
  37                 DependencyPropertyDescriptor descriptor = DependencyPropertyDescriptor.FromProperty(UIElement.IsMouseOverProperty, typeof(UIElement));
  38                 descriptor.RemoveValueChanged(this.element, value);
  39             }
  40         }
  41
  42         public bool IsMouseOver
  43         {
  44             get
  45             {
  46                 return this.element.IsMouseOver;
  47             }
  48         }
  49
  50         public Visibility Visibility
  51         {
  52             set
  53             {
  54                 this.element.Visibility = value;
  55             }
  56         }
  57     }
  58 }