mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/Model/AttachedPropertyDescriptor.cs

   1 //----------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 //----------------------------------------------------------------
   4
   5 namespace System.Activities.Presentation.Model
   6 {
   7     using System;
   8     using System.Collections.Generic;
   9     using System.Linq;
  10     using System.Text;
  11     using System.ComponentModel;
  12     using System.Activities.Presentation.Model;
  13
  14     class AttachedPropertyDescriptor : PropertyDescriptor
  15     {
  16         AttachedProperty AttachedProperty;
  17         ModelItem owner;
  18
  19         public AttachedPropertyDescriptor(AttachedProperty AttachedProperty, ModelItem owner)
  20             : base(AttachedProperty.Name, null)
  21         {
  22             this.AttachedProperty = AttachedProperty;
  23             this.owner = owner;
  24         }
  25
  26         public override AttributeCollection Attributes
  27         {
  28             get
  29             {
  30                 List<Attribute> attributeList = new List<Attribute>();
  31                 foreach (Attribute attr in TypeDescriptor.GetAttributes(this.PropertyType))
  32                 {
  33                     attributeList.Add(attr);
  34                 }
  35                 BrowsableAttribute browsableAttribute = new BrowsableAttribute(this.IsBrowsable);
  36                 attributeList.Add(browsableAttribute);
  37                 return new AttributeCollection(attributeList.ToArray());
  38             }
  39         }
  40
  41         public override Type ComponentType
  42         {
  43             get { return this.owner.ItemType; }
  44         }
  45
  46         public override bool IsReadOnly
  47         {
  48             get
  49             {
  50                 return this.AttachedProperty.IsReadOnly;
  51             }
  52         }
  53
  54         public override Type PropertyType
  55         {
  56             get
  57             {
  58                 return this.AttachedProperty.Type;
  59             }
  60         }
  61
  62         public override bool IsBrowsable
  63         {
  64             get
  65             {
  66                 return this.AttachedProperty.IsBrowsable;
  67             }
  68         }
  69         public override bool CanResetValue(object component)
  70         {
  71             return false;
  72         }
  73
  74         public override object GetValue(object component)
  75         {
  76
  77             return this.AttachedProperty.GetValue(owner);
  78         }
  79
  80         public override void ResetValue(object component)
  81         {
  82             this.AttachedProperty.ResetValue(owner);
  83         }
  84
  85         public override void SetValue(object component, object value)
  86         {
  87             this.AttachedProperty.SetValue(owner, value);
  88         }
  89
  90         public override bool ShouldSerializeValue(object component)
  91         {
  92             return false;
  93         }
  94     }
  95
  96 }