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1 using System;
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2 using System.Collections;
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3 using System.Collections.Generic;
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4 using System.ComponentModel.Design;
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5 using System.Diagnostics;
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6 using System.Reflection;
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7 using System.Windows.Forms;
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8
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9 namespace BLToolkit.ComponentModel.Design
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10 {
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11 public partial class GetTypeDialog : Form
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12 {
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13 public GetTypeDialog(IServiceProvider serviceProvider, Type baseType, Predicate<Type> filter)
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14 {
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15 _serviceProvider = serviceProvider;
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16 _baseType = baseType;
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17 _filter = filter;
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18
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19 InitializeComponent();
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20
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21 LoadTypes();
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22 }
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23
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24 private readonly IServiceProvider _serviceProvider;
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25 private readonly Type _baseType;
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26 private readonly Predicate<Type> _filter;
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27
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28 private Type _resultType;
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29 public Type ResultType
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30 {
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31 get { return _resultType; }
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32 }
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33
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34 delegate TypePicker.TypeNode GetTypeNode(Type t);
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35
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36 private void LoadTypes()
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37 {
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38 Cursor = Cursors.WaitCursor;
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39
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40 try
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41 {
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42 _treeView.Nodes.Clear();
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43
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44 var assemblyNodes = new Dictionary<Assembly, TreeNode>();
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45 var namespaceNodes = new Dictionary<string, TreeNode>();
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46 var typeNodes = new Dictionary<Type, TypePicker.TypeNode>();
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47 var service = (ITypeDiscoveryService)_serviceProvider.GetService(typeof(ITypeDiscoveryService));
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48 var cTypes = service.GetTypes(_baseType, _systemCheckBox.Checked);
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49 var types = new List<Type>(cTypes.Count);
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50
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51 foreach (Type type in cTypes)
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52 types.Add(type);
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53
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54 types.Sort((a, b) =>
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55 a.Assembly == b.Assembly ?
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56 string.Compare(a.FullName, b.FullName) :
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57 string.Compare(a.Assembly.FullName, b.Assembly.FullName));
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58
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59 foreach (var type in types)
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60 {
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61 if (_filter != null && _filter(type) == false)
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62 continue;
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63
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64 var assembly = type.Assembly;
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65
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66 TreeNode assemblyNode;
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67
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68 if (!assemblyNodes.TryGetValue(assembly, out assemblyNode))
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69 {
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70 assemblyNodes[assembly] = assemblyNode =
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71 _treeView.Nodes.Add(assembly.FullName, assembly.GetName().Name, 1, 1);
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72 }
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73
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74 var @namespace = type.Namespace ?? string.Empty;
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75 var namespaceKey = assembly.FullName + ", " + @namespace;
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76
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77 TreeNode namespaceNode;
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78
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79 if (!namespaceNodes.TryGetValue(namespaceKey, out namespaceNode))
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80 {
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81 namespaceNodes[namespaceKey] = namespaceNode =
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82 assemblyNode.Nodes.Add(namespaceKey, @namespace, 2, 2);
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83 }
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84
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85 GetTypeNode getTypeNode = null; getTypeNode = t =>
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86 {
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87 TypePicker.TypeNode node;
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88
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89 if (typeNodes.TryGetValue(t, out node))
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90 return node;
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91
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92 if (t.DeclaringType == null)
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93 {
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94 namespaceNode.Nodes.Add(node = new TypePicker.TypeNode(t.Name, t, false));
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95 }
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96 else
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97 {
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98 TreeNode parent = getTypeNode(t.DeclaringType);
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99
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100 parent.Nodes.Add(node = new TypePicker.TypeNode(t.Name, t, false));
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101 }
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102
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103 typeNodes.Add(t, node);
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104
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105 return node;
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106 };
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107
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108 getTypeNode(type).IsSelectable = true;
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109 }
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110 }
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111 catch (Exception ex)
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112 {
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113 Debug.WriteLine(ex.Message);
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114 }
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115 finally
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116 {
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117 Cursor = Cursors.Default;
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118 }
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119 }
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120
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121 private void systemCheckBox_CheckedChanged(object sender, EventArgs e)
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122 {
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123 LoadTypes();
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124 }
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125
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126 private void treeView_AfterSelect(object sender, TreeViewEventArgs e)
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127 {
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128 var node = e.Node as TypePicker.TypeNode;
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129
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130 _resultType = node != null && node.IsSelectable? node.Type: null;
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131
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132 _okButton.Enabled = _resultType != null;
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133 }
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134
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135 private void treeView_DoubleClick(object sender, EventArgs e)
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136 {
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137 _okButton.PerformClick();
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138 }
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139
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140 }
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141 } |
