1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
//
// System.ComponentModel.AttributeCollection.cs
//
// Authors:
// Rodrigo Moya (rodrigo@ximian.com)
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2002 Ximian, Inc. (http://www.ximian.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.Reflection;
using System.Runtime.InteropServices;
namespace System.ComponentModel
{
[ComVisible (true)]
public class AttributeCollection : ICollection
{
private ArrayList attrList = new ArrayList ();
public static readonly AttributeCollection Empty = new AttributeCollection ((ArrayList)null);
internal AttributeCollection (ArrayList attributes)
{
if (attributes != null)
attrList = attributes;
}
public AttributeCollection (params Attribute[] attributes)
{
if (attributes != null)
for (int i = 0; i < attributes.Length; i++)
attrList.Add (attributes[i]);
}
#if NET_4_0
protected AttributeCollection ()
{
}
#endif
public static AttributeCollection FromExisting (AttributeCollection existing, params Attribute [] newAttributes)
{
if (existing == null)
throw new ArgumentNullException ("existing");
AttributeCollection ret = new AttributeCollection ();
ret.attrList.AddRange (existing.attrList);
if (newAttributes != null)
ret.attrList.AddRange (newAttributes);
return ret;
}
public bool Contains (Attribute attr)
{
Attribute at = this [attr.GetType ()];
if (at != null)
return attr.Equals (at);
else
return false;
}
public bool Contains (Attribute [] attributes)
{
if (attributes == null)
return true;
foreach (Attribute attr in attributes)
if (!Contains (attr))
return false;
return true;
}
public void CopyTo (Array array, int index)
{
attrList.CopyTo (array, index);
}
IEnumerator IEnumerable.GetEnumerator () {
return GetEnumerator ();
}
public IEnumerator GetEnumerator ()
{
return attrList.GetEnumerator ();
}
public bool Matches (Attribute attr)
{
foreach (Attribute a in attrList)
if (a.Match (attr))
return true;
return false;
}
public bool Matches (Attribute [] attributes)
{
foreach (Attribute a in attributes)
if (!(Matches (a)))
return false;
return true;
}
protected Attribute GetDefaultAttribute (Type attributeType)
{
Attribute attr = null;
BindingFlags bf = BindingFlags.Public | BindingFlags.Static;
FieldInfo def = attributeType.GetField ("Default", bf);
if (def == null) {
ConstructorInfo constructorInfo = attributeType.GetConstructor (Type.EmptyTypes);
if (constructorInfo != null)
attr = constructorInfo.Invoke (null) as Attribute;
if (attr != null && !attr.IsDefaultAttribute ())
attr = null;
} else {
attr = (Attribute) def.GetValue (null);
}
return attr;
}
bool ICollection.IsSynchronized {
get {
return attrList.IsSynchronized;
}
}
object ICollection.SyncRoot {
get {
return attrList.SyncRoot;
}
}
int ICollection.Count {
get {
return Count;
}
}
public int Count {
get {
return attrList != null ? attrList.Count : 0;
}
}
public virtual Attribute this[Type type] {
get {
Attribute attr = null;
if (attrList != null) {
foreach (Attribute a in attrList) {
if (type.IsAssignableFrom (a.GetType ())) {
attr = a;
break;
}
}
}
if (attr == null)
attr = GetDefaultAttribute (type);
return attr;
}
}
public virtual Attribute this[int index] {
get {
return (Attribute) attrList [index];
}
}
#if NET_4_0
Attribute [] attributes_arr;
// MSDN doesn't mention it, but this property is returning the same instance always.
protected virtual Attribute [] Attributes {
get {
if (attrList == null || attrList.Count == 0)
return null;
if (attributes_arr == null)
attributes_arr = (Attribute[]) attrList.ToArray (typeof (Attribute));
return attributes_arr;
}
}
#endif
}
}
|
