blob: 5e7c22b880f9f685bf5ae06252d14cead4d3d1bf (
plain)
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
|
//-----------------------------------------------------------------------
// <copyright file="UriConverter.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.ComponentModel {
using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Diagnostics.Contracts;
using System.Linq;
using System.Reflection;
/// <summary>
/// A design-time helper to allow controls to have properties
/// of type <see cref="Uri"/>.
/// </summary>
public class UriConverter : ConverterBase<Uri> {
/// <summary>
/// Initializes a new instance of the UriConverter class.
/// </summary>
protected UriConverter() {
}
/// <summary>
/// Gets the type to reflect over to extract the well known values.
/// </summary>
protected virtual Type WellKnownValuesType {
get { return null; }
}
/// <summary>
/// Returns whether the given value object is valid for this type and for the specified context.
/// </summary>
/// <param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"/> that provides a format context.</param>
/// <param name="value">The <see cref="T:System.Object"/> to test for validity.</param>
/// <returns>
/// true if the specified value is valid for this object; otherwise, false.
/// </returns>
public override bool IsValid(ITypeDescriptorContext context, object value) {
Uri uriValue;
string stringValue;
if ((uriValue = value as Uri) != null) {
return uriValue.IsAbsoluteUri;
} else if ((stringValue = value as string) != null) {
Uri result;
return stringValue.Length == 0 || Uri.TryCreate(stringValue, UriKind.Absolute, out result);
} else {
return false;
}
}
/// <summary>
/// Converts a value from its string representation to its strongly-typed object.
/// </summary>
/// <param name="value">The value.</param>
/// <returns>The strongly-typed object.</returns>
[Pure]
protected override Uri ConvertFrom(string value) {
return string.IsNullOrEmpty(value) ? null : new Uri(value);
}
/// <summary>
/// Creates the reflection instructions for recreating an instance later.
/// </summary>
/// <param name="value">The value to recreate later.</param>
/// <returns>
/// The description of how to recreate an instance.
/// </returns>
[Pure]
protected override InstanceDescriptor CreateFrom(Uri value) {
if (value == null) {
return null;
}
MemberInfo uriCtor = typeof(Uri).GetConstructor(new Type[] { typeof(string) });
return CreateInstanceDescriptor(uriCtor, new object[] { value.AbsoluteUri });
}
/// <summary>
/// Converts the strongly-typed value to a string.
/// </summary>
/// <param name="value">The value to convert.</param>
/// <returns>The string representation of the object.</returns>
[Pure]
protected override string ConvertToString(Uri value) {
if (value == null) {
return null;
}
return value.AbsoluteUri;
}
/// <summary>
/// Gets the standard claim type URIs known to the library.
/// </summary>
/// <returns>An array of the standard claim types.</returns>
[Pure]
protected override ICollection GetStandardValuesForCache() {
if (this.WellKnownValuesType != null) {
var fields = from field in this.WellKnownValuesType.GetFields(BindingFlags.Static | BindingFlags.Public)
let value = (string)field.GetValue(null)
where value != null
select new Uri(value);
var properties = from prop in this.WellKnownValuesType.GetProperties(BindingFlags.Static | BindingFlags.Public)
let value = (string)prop.GetValue(null, null)
where value != null
select new Uri(value);
return (fields.Concat(properties)).ToArray();
} else {
return new Uri[0];
}
}
}
}
|
