blob: d6c972b5e89746f910d9ba885197f1c199571943 (
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
118
119
120
121
122
123
124
125
126
127
|
// --------------------------------------------------------------------------------------------------------------------
// <copyright file="EnumHelper.cs" company="HandBrake Project (http://handbrake.fr)">
// This file is part of the HandBrake source code - It may be used under the terms of the GNU General Public License.
// </copyright>
// <summary>
// Enum Helpers
// </summary>
// --------------------------------------------------------------------------------------------------------------------
namespace HandBrake.ApplicationServices.Utilities
{
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Reflection;
/// <summary>
/// Enum Helpers
/// </summary>
/// <typeparam name="T">
/// The Type Parameter
/// </typeparam>
public class EnumHelper<T>
{
/// <summary>
/// Get the description of an Enum
/// </summary>
/// <param name="value">
/// The value.
/// </param>
/// <returns>
/// The Description string
/// </returns>
public static string GetDescription(T value)
{
FieldInfo fieldInfo = value.GetType().GetField(value.ToString());
DescriptionAttribute[] attributes =
(DescriptionAttribute[])fieldInfo.GetCustomAttributes(
typeof(DescriptionAttribute), false);
return (attributes.Length > 0) ? attributes[0].Description : value.ToString();
}
/// <summary>
/// Get the Display Value of the Enum Model
/// </summary>
/// <param name="value">An Enum with Display Attributes</param>
/// <returns>A string name</returns>
public static string GetDisplay(T value)
{
FieldInfo fieldInfo = value.GetType().GetField(value.ToString());
DisplayAttribute[] attributes = (DisplayAttribute[])fieldInfo.GetCustomAttributes(typeof(DisplayAttribute), false);
return (attributes.Length > 0) ? attributes[0].Name : value.ToString();
}
/// <summary>
/// Get the Enumeration for a given Enum Description
/// </summary>
/// <param name="description">The String description</param>
/// <returns>The Enum Value</returns>
public static T GetValue(string description)
{
foreach (T val in Enum.GetValues(typeof(T)))
{
string currDescription = GetDescription(val);
string currDisplay = GetDisplay(val);
if (currDescription == description || currDisplay == description)
{
return val;
}
}
throw new ArgumentOutOfRangeException("The Description for the enum was not recognized.");
}
/// <summary>
/// Return a list of all the enum values.
/// </summary>
/// <returns>
/// An Enum Oject List
/// </returns>
public static IEnumerable<T> GetEnumList()
{
return Enum.GetValues(typeof(T)).Cast<T>().ToList();
}
/// <summary>
/// Get a list of string names for each enum value.
/// </summary>
/// <param name="enumType">
/// The enum type.
/// </param>
/// <typeparam name="T">
/// The type of the enum
/// </typeparam>
/// <returns>
/// A collection of strings that represent all the enum values
/// </returns>
public static IEnumerable<string> GetEnumDisplayValues(Type enumType)
{
var strings = new Collection<string>();
foreach (T e in Enum.GetValues(enumType))
strings.Add(GetDisplay(e));
return strings;
}
/// <summary>
/// Get a list of string names for each enum value passed in.
/// </summary>
/// <param name="items">
/// The items.
/// </param>
/// <typeparam name="T">
/// The type of the enum
/// </typeparam>
/// <returns>
/// A collection of strings that represent all the enum values
/// </returns>
public static IEnumerable<string> GetEnumDisplayValuesSubset(IEnumerable<T> items)
{
return items.Select(GetDisplay).ToList();
}
}
}
|
