[576] | 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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[611] | 10 | @date 2008/07/21
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[576] | 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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[611] | 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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[576] | 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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[611] | 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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[576] | 49 | End Class
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| 50 |
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[611] | 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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[576] | 186 | End Namespace 'UI
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| 187 | End Namespace 'Widnows
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| 188 | End Namespace 'ActiveBasic
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