1 | 'Classes/ActiveBasic/Windows/UI/ListBox.ab
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2 | #require <Classes/ActiveBasic/Windows/UI/Control.ab>
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3 |
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4 | Namespace ActiveBasic
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5 | Namespace Windows
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6 | Namespace UI
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7 |
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8 | /*!
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9 | @brief リストボックスコントロールのクラス
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10 | @date 2008/07/21
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11 | @auther Egtra
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12 | */
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13 | Class ListBox
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14 | Inherits Control
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15 | Public
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16 | Sub ListBox()
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17 | items = New Detail.ListBoxItemList(This)
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18 | End Sub
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19 |
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20 | Function Items() As System.Collections.Generic.IList<String>
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21 | Items = items
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22 | End Function
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23 |
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24 | Sub SetSelected(i As Long, select As Boolean)
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25 | Dim now = SendMessage(LB_GETSEL, i As WPARAM, 0)
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26 | lrCheck(now, i, "ListBox.SetSelected")
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27 | If (now > 0) <> (select As Long <> 0) Then
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28 | '現状とselectが異なればLB_SETCURSELで反転させる。
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29 | lrCheck(SendMessage(LB_SETCURSEL, i As WPARAM, 0), i, "ListBox.SetSelected")
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30 | End If
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31 | End Sub
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32 | Protected
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33 | Override Sub GetCreateStruct(ByRef cs As CREATESTRUCT)
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34 | With cs
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35 | .lpszClass = "LISTBOX"
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36 | End With
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37 | End Sub
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38 |
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39 | Private
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40 | items As Detail.ListBoxItemList
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41 |
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42 | Sub lrCheck(lr As LRESULT, i As Long, s As String)
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43 | Detail.LRCheck(lr, i, items.Count, s)
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44 | End Sub
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45 |
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46 | Sub lrCheck(lr As LRESULT, s As String)
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47 | Detail.LRCheck(lr, s)
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48 | End Sub
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49 | End Class
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50 |
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51 | Namespace Detail
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52 |
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53 | Class ListBoxItemList
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54 | Implements System.Collections.Generic.IList<String>
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55 | Public
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56 | Sub ListBoxItemList(l As ListBox)
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57 | base = l
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58 | End Sub
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59 |
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60 | Function GetEnumerator() As System.Collections.Generic.IEnumerator<String>
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61 | End Function
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62 |
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63 | Function Count() As Long
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64 | Count = base.SendMessage(LB_GETCOUNT) As Long
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65 | lrCheck(Count, "ListBox.Item.Count")
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66 | End Function
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67 |
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68 | Function IsReadOnly() As Boolean
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69 | Return False
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70 | End Function
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71 |
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72 | Sub Add(s As String)
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73 | lrCheck(base.SendMessage(LB_ADDSTRING, 0, ToTCStr(s) As LPARAM), "ListBox.Item.Add")
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74 | End Sub
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75 |
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76 | Sub Clear()
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77 | Do : Loop Until removeAtImpl(0) = LB_ERR
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78 | End Sub
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79 |
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80 | Function Remove(s As String) As Boolean
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81 | Dim i = IndexOf(s)
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82 | If i = -1 Then
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83 | Remove = False
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84 | Else
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85 | removeAtImpl(i)
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86 | Remove = True
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87 | End If
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88 | End Function
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89 |
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90 | Sub Operator [](index As Long, item As String)
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91 | Item[index] = item
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92 | End Sub
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93 |
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94 | Function Operator [](index As Long) As String
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95 | Return Item[index]
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96 | End Function
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97 |
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98 | Virtual Sub Item(i As Long, s As String)
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99 | lrCheck(removeAtImpl(i), i, "ListBox.Item[] (set)")
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100 | lrCheck(base.SendMessage(LB_INSERTSTRING, 0, ToTCStr(s) As LPARAM), i, "ListBox.Item[] (set)")
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101 | End Sub
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102 |
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103 | Virtual Function Item(i As Long) As String
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104 | Dim len = base.SendMessage(LB_GETTEXTLEN, i As WPARAM, 0)
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105 | lrCheck(len, i, "ListBox.Item[] (get)")
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106 | Dim sb = New System.Text.StringBuilder(len)
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107 | sb.Length = len
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108 | len = base.SendMessage(LB_GETTEXT, i As WPARAM, StrPtr(sb) As LPARAM)
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109 | lrCheck(len, i, "ListBox.Item[] (get)")
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110 | sb.Length = len
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111 | Item = sb.ToString
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112 | End Function
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113 |
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114 | Virtual Function IndexOf(s As String) As Long
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115 | '見つからなかったときに返るLB_ERRはちょうど-1。
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116 | IndexOf = base.SendMessage(LB_FINDSTRINGEXACT, -1 As WPARAM, ToTCStr(s) As LPARAM) As Long
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117 | End Function
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118 |
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119 | Virtual Sub Insert(i As Long, s As String)
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120 | Dim lr = base.SendMessage(LB_INSERTSTRING, 0, ToTCStr(s) As LPARAM)
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121 | lrCheck(lr, i, "ListBox.Item.Insert")
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122 | End Sub
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123 |
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124 | Virtual Sub RemoveAt(i As Long)
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125 | Dim lr = removeAtImpl(i)
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126 | lrCheck(lr, i, "ListBox.Item.RemoveAt")
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127 | End Sub
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128 | Private
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129 | Function removeAtImpl(i As Long) As LRESULT
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130 | removeAtImpl = base.SendMessage(LB_DELETESTRING, i As WPARAM, 0)
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131 | End Function
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132 |
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133 | Sub lrCheck(lr As LRESULT, s As String)
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134 | LRCheck(lr, s)
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135 | End Sub
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136 |
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137 | Sub lrCheck(lr As LRESULT, i As Long, s As String)
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138 | LRCheck(lr, i, Count, s)
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139 | End Sub
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140 |
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141 | base As ListBox
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142 | End Class
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143 |
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144 | /*!
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145 | @brief List Boxからの戻り値がエラー値の場合に例外を投げる。
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146 | @param[in] lr SendMessageなどの戻り値
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147 | @param[in] s 例外を投げるときに添加するメッセージ
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148 | @throw SystemException lrがエラー値のとき
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149 | @date 2008/08/21
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150 | @auther Egtra
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151 | */
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152 | Sub LRCheck(lr As LRESULT, s As String)
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153 | If lr = LB_ERR Then
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154 | Throw New System.SystemException(s & " (LB_ERR)")
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155 | ElseIf lr = LB_ERRSPACE Then
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156 | Throw New System.SystemException(s & " (LB_ERRSPACE)")
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157 | End If
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158 | End Sub
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159 |
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160 | /*!
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161 | @brief List Boxからの戻り値がエラー値の場合に例外を投げる。
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162 | @param[in] lr SendMessageなどの戻り値
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163 | @param[in] i インデックス
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164 | @param[in] max インデックスの許容される最大値
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165 | @param[in] s 例外を投げるときに添加するメッセージ
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166 | @throw SystemException lrがエラー値のとき
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167 | @throw OutOfRangeException lrがLB_ERRで、なおかつiが範囲外のとき
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168 | @date 2008/08/21
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169 | @auther Egtra
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170 | こちらは、iが範囲外かならOutOfRangeExceptionを投げるのが特徴
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171 | */
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172 | Sub LRCheck(lr As LRESULT, i As Long, max As Long, s As String)
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173 | If lr = LB_ERR Then
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174 | If i < 0 Or i >= max Then
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175 | Throw New System.ArgumentOutOfRangeException(s)
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176 | Else
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177 | Throw New System.SystemException(s & " (LB_ERR)")
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178 | End If
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179 | ElseIf lr = LB_ERRSPACE Then
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180 | Throw New System.SystemException(s & " (LB_ERRSPACE)")
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181 | End If
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182 | End Sub
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183 |
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184 | End Namespace
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185 |
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186 | End Namespace 'UI
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187 | End Namespace 'Widnows
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188 | End Namespace 'ActiveBasic
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