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comparison Source/ComponentModel/ObjectHolder.cs @ 0:f990fcb411a9

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Копия текущей версии из github
author cin
date Thu, 27 Mar 2014 21:46:09 +0400
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-1:000000000000 0:f990fcb411a9
1 using System;
2 using System.ComponentModel;
3
4 using BLToolkit.Reflection;
5
6 namespace BLToolkit.ComponentModel
7 {
8 public class ObjectHolder : ICustomTypeDescriptor
9 {
10 public ObjectHolder(object obj, ObjectBinder objectBinder)
11 {
12 _object = obj;
13 _originalProperties = ((ITypedList)objectBinder).GetItemProperties(null);
14 }
15
16 private readonly PropertyDescriptorCollection _originalProperties;
17 private PropertyDescriptorCollection _customProperties;
18
19 private readonly object _object;
20 public object Object
21 {
22 get { return _object; }
23 }
24
25 private ICustomTypeDescriptor _customTypeDescriptor;
26 private ICustomTypeDescriptor CustomTypeDescriptor
27 {
28 get
29 {
30 if (_customTypeDescriptor == null)
31 {
32 _customTypeDescriptor = _object is ICustomTypeDescriptor?
33 (ICustomTypeDescriptor)_object:
34 TypeAccessor.GetCustomTypeDescriptor(_object.GetType());
35 }
36
37 return _customTypeDescriptor;
38 }
39 }
40
41 #region ICustomTypeDescriptor Members
42
43 AttributeCollection ICustomTypeDescriptor.GetAttributes()
44 {
45 return CustomTypeDescriptor.GetAttributes();
46 }
47
48 string ICustomTypeDescriptor.GetClassName()
49 {
50 return CustomTypeDescriptor.GetClassName();
51 }
52
53 string ICustomTypeDescriptor.GetComponentName()
54 {
55 return CustomTypeDescriptor.GetComponentName();
56 }
57
58 TypeConverter ICustomTypeDescriptor.GetConverter()
59 {
60 return CustomTypeDescriptor.GetConverter();
61 }
62
63 EventDescriptor ICustomTypeDescriptor.GetDefaultEvent()
64 {
65 return CustomTypeDescriptor.GetDefaultEvent();
66 }
67
68 PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty()
69 {
70 return CustomTypeDescriptor.GetDefaultProperty();
71 }
72
73 object ICustomTypeDescriptor.GetEditor(Type editorBaseType)
74 {
75 return CustomTypeDescriptor.GetEditor(editorBaseType);
76 }
77
78 EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes)
79 {
80 return CustomTypeDescriptor.GetEvents(attributes);
81 }
82
83 EventDescriptorCollection ICustomTypeDescriptor.GetEvents()
84 {
85 return CustomTypeDescriptor.GetEvents();
86 }
87
88 PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes)
89 {
90 if (_customProperties == null)
91 {
92 PropertyDescriptor[] properties = new PropertyDescriptor[_originalProperties.Count];
93
94 for (int i = 0; i < properties.Length; i++)
95 {
96 properties[i] = new ObjectPropertyDescriptor(_originalProperties[i]);
97 }
98
99 _customProperties = new PropertyDescriptorCollection(properties);
100 }
101
102 return _customProperties;
103 }
104
105 PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties()
106 {
107 return ((ICustomTypeDescriptor)this).GetProperties(null);
108 }
109
110 object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd)
111 {
112 return CustomTypeDescriptor.GetPropertyOwner(pd);
113 }
114
115 #endregion
116
117 #region ObjectPropertyDescriptor
118
119 class ObjectPropertyDescriptor : PropertyDescriptorWrapper
120 {
121 public ObjectPropertyDescriptor(PropertyDescriptor pd)
122 : base(pd)
123 {
124 }
125
126 public override object GetValue(object component)
127 {
128 return base.GetValue(((ObjectHolder)component).Object);
129 }
130
131 public override void SetValue(object component, object value)
132 {
133 base.SetValue(((ObjectHolder)component).Object, value);
134 }
135 }
136
137 #endregion
138 }
139 }