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1 using System;
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2 using System.Collections;
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3 using System.ComponentModel;
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4 using System.Windows.Forms;
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5 using System.Drawing.Design;
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6
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7 using BLToolkit.ComponentModel;
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8 using System.Reflection;
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9
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10 namespace BLToolkit.Demo.Controls
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11 {
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12 public partial class EnumSelector : GroupBox
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13 {
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14 public EnumSelector()
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15 {
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16 InitializeComponent();
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17 }
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18
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19 public EnumSelector(IContainer container)
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20 {
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21 container.Add(this);
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22
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23 InitializeComponent();
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24 }
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25
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26 [RefreshProperties(RefreshProperties.Repaint)]
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27 [Category("Data")]
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28 [Bindable(true)]
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29 public object Value
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30 {
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31 get
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32 {
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33 foreach (RadioButton r in _controls.Keys)
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34 if (r.Checked)
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35 return Enum.Parse(_valueType, (string)_controls[r]);
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36
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37
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38 return -1;
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39 }
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40 set
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41 {
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42 if (value != null)
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43 {
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44 string s = value.ToString();
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45
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46 foreach (DictionaryEntry de in _controls)
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47 {
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48 RadioButton r = (RadioButton)de.Key;
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49
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50 if (r.Checked != (de.Value.ToString() == s))
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51 r.Checked = !r.Checked;
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52 }
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53 }
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54 }
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55 }
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56
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57 const FieldAttributes EnumField = FieldAttributes.Public | FieldAttributes.Static | FieldAttributes.Literal;
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58
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59 private Hashtable _controls = new Hashtable();
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60
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61 private Type _valueType;
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62 [RefreshProperties(RefreshProperties.Repaint)]
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63 [DefaultValue(null)]
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64 [Category("Data")]
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65 [TypeConverter(typeof(TypeTypeConverter))]
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66 [Editor(typeof(EnumEditor), typeof(UITypeEditor))]
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67 public Type ValueType
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68 {
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69 get { return _valueType; }
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70 set
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71 {
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72 _valueType = value;
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73
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74 foreach (Control c in _controls.Keys)
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75 Controls.Remove(c);
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76
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77 FieldInfo[] fields = _valueType.GetFields();
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78
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79 foreach (FieldInfo fi in fields)
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80 {
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81 if ((fi.Attributes & EnumField) == EnumField)
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82 {
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83 RadioButton r = new RadioButton();
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84
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85 Controls.Add(r);
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86 _controls.Add(r, fi.Name);
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87
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88 r.Text = fi.Name;
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89 r.Name = fi.Name + "RadioButton";
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90 r.TabIndex = _controls.Count;
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91 r.AutoSize = true;
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92 r.Location = new System.Drawing.Point(10, 23 * _controls.Count - 4);
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93 r.UseVisualStyleBackColor = true;
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94 }
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95 }
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96 }
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97 }
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98
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99 class EnumEditor : ComponentModel.Design.TypeEditor
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100 {
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101 protected override bool FilterTypeList(Type type)
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102 {
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103 return type.IsPublic && type.IsEnum;
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104 }
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105 }
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106 }
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107 }
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