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MultiLineButtonEdit.vb
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/
MultiLineButtonEdit.vb
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Imports Microsoft.VisualBasic
Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Drawing
Imports System.Reflection
Imports DevExpress.XtraEditors
Imports DevExpress.XtraEditors.Repository
Imports DevExpress.XtraEditors.Registrator
Imports DevExpress.XtraEditors.Drawing
Imports DevExpress.XtraEditors.ViewInfo
Imports DevExpress.XtraEditors.Controls
Imports System.ComponentModel
Imports DevExpress.Utils
Imports DevExpress.Utils.Drawing
Imports System.Windows.Forms
Namespace MultilineButtonEditExample
<UserRepositoryItem("RegisterMultiLineButtonEdit")> _
Public Class RepositoryItemMultiLineButtonEdit
Inherits RepositoryItemButtonEdit
Private _acceptsTab As Boolean
Private _acceptsReturn As Boolean
Private _linesCount As Integer
Private _scrollBars As ScrollBars
Public Const MultiLineButtonEditName As String = "MultiLineButtonEdit"
Shared Sub New()
RegisterMultiLineButtonEdit()
End Sub
Public Sub New()
Me._acceptsTab = False
Me._acceptsReturn = True
Me._linesCount = 0
Me._scrollBars = ScrollBars.None
End Sub
<Browsable(False)> _
Protected Overrides ReadOnly Property UseMaskBox() As Boolean
Get
Return False
End Get
End Property
Public Overrides Property AutoHeight As Boolean
Get
Return False
End Get
Set(value As Boolean)
MyBase.AutoHeight = value
End Set
End Property
Public Overrides ReadOnly Property EditorTypeName() As String
Get
Return MultiLineButtonEditName
End Get
End Property
Public Shared Sub RegisterMultiLineButtonEdit()
Dim img As Image = Nothing
Try
img = CType(Bitmap.FromStream(System.Reflection.Assembly.GetAssembly(GetType(MultiLineButtonEdit)).GetManifestResourceStream("MultiLineButtonEdit.bmp")), Image)
Catch
End Try
EditorRegistrationInfo.Default.Editors.Add(New EditorClassInfo(MultiLineButtonEditName, GetType(MultiLineButtonEdit), GetType(RepositoryItemMultiLineButtonEdit), GetType(MultiLineButtonEditViewInfo), New ButtonEditPainter(), True, img, GetType(DevExpress.Accessibility.ButtonEditAccessible)))
End Sub
<DefaultValue(False)> _
Public Property AcceptsTab() As Boolean
Get
Return _acceptsTab
End Get
Set(ByVal value As Boolean)
If AcceptsTab = value Then
Return
End If
_acceptsTab = value
OnPropertiesChanged()
End Set
End Property
<DefaultValue(True)> _
Public Property AcceptsReturn() As Boolean
Get
Return _acceptsReturn
End Get
Set(ByVal value As Boolean)
If AcceptsReturn = value Then
Return
End If
_acceptsReturn = value
OnPropertiesChanged()
End Set
End Property
<Browsable(False)> _
Public Property LinesCount() As Integer
Get
Return _linesCount
End Get
Set(ByVal value As Integer)
If value < 1 Then
value = 0
End If
If LinesCount = value Then
Return
End If
_linesCount = value
OnPropertiesChanged()
End Set
End Property
Public Property ScrollBars() As ScrollBars
Get
Return _scrollBars
End Get
Set(ByVal value As ScrollBars)
If ScrollBars = value Then
Return
End If
_scrollBars = value
OnPropertiesChanged()
End Set
End Property
Public Overrides Sub Assign(ByVal item As RepositoryItem)
Dim source As RepositoryItemMultiLineButtonEdit = TryCast(item, RepositoryItemMultiLineButtonEdit)
BeginUpdate()
Try
MyBase.Assign(item)
If source Is Nothing Then
Return
End If
Me._acceptsReturn = source.AcceptsReturn
Me._acceptsTab = source.AcceptsTab
Me._scrollBars = source.ScrollBars
Me._linesCount = source.LinesCount
Finally
EndUpdate()
End Try
End Sub
Protected Overrides Function NeededKeysContains(ByVal key As Keys) As Boolean
If AcceptsReturn AndAlso key = Keys.Enter Then
Return True
End If
If AcceptsTab AndAlso key = Keys.Tab Then
Return True
End If
If key = Keys.Up Then
Return True
End If
If key = Keys.Down Then
Return True
End If
Return MyBase.NeededKeysContains(key)
End Function
Protected Overrides Function IsNeededKeyCore(ByVal keyData As Keys) As Boolean
If keyData = (Keys.Enter Or Keys.Control) Then
Return False
End If
Dim res As Boolean = MyBase.IsNeededKeyCore(keyData)
If res Then
Return True
End If
If keyData = Keys.PageUp OrElse keyData = Keys.PageDown Then
Return True
End If
Return False
End Function
End Class
Public Class MultiLineButtonEditViewInfo
Inherits ButtonEditViewInfo
Implements IHeightAdaptable
Public Sub New(ByVal item As RepositoryItem)
MyBase.New(item)
End Sub
Public Shadows ReadOnly Property Item() As RepositoryItemMultiLineButtonEdit
Get
Return TryCast(MyBase.Item, RepositoryItemMultiLineButtonEdit)
End Get
End Property
Private Shared defaultEditTextOptions_Renamed As TextOptions
Private Shared ReadOnly Property DefaultEditTextOptions() As TextOptions
Get
If defaultEditTextOptions_Renamed Is Nothing Then
defaultEditTextOptions_Renamed = New TextOptions(HorzAlignment.Near, VertAlignment.Top, WordWrap.Wrap, Trimming.None)
End If
Return defaultEditTextOptions_Renamed
End Get
End Property
Public Overrides ReadOnly Property DefaultTextOptions() As TextOptions
Get
If OwnerEdit IsNot Nothing AndAlso OwnerEdit.InplaceType = InplaceType.Standalone Then
If Item.ScrollBars = ScrollBars.Horizontal OrElse Item.ScrollBars = ScrollBars.Both Then
Return New TextOptions(HorzAlignment.Near, VertAlignment.Top, WordWrap.NoWrap, Trimming.None)
End If
End If
Return DefaultEditTextOptions
End Get
End Property
Protected Overrides Sub CalcContentRect(ByVal bounds As Rectangle)
MyBase.CalcContentRect(bounds)
Me.fMaskBoxRect = ContentRect
If Not(TypeOf BorderPainter Is EmptyBorderPainter) Then
Me.fMaskBoxRect.Inflate(-1, -1)
End If
End Sub
Private Function CalcHeight(ByVal cache As GraphicsCache, ByVal width As Integer) As Integer Implements IHeightAdaptable.CalcHeight
Dim info As New BorderObjectInfoArgs(cache)
info.Bounds = New Rectangle(0, 0, ContentRect.Width, 100)
Dim textRect As Rectangle = BorderPainter.GetObjectClientRectangle(info)
If Not(TypeOf BorderPainter Is EmptyBorderPainter) AndAlso Not(TypeOf BorderPainter Is InplaceBorderPainter) Then
textRect.Inflate(-1, -1)
End If
Dim text As String = String.Empty
If Item.LinesCount = 0 Then
text = DisplayText
If text IsNot Nothing AndAlso text.Length > 0 Then
Dim lastChar As Char = text.Chars(text.Length - 1)
If AscW(lastChar) = 13 OrElse AscW(lastChar) = 10 Then
text &= "W"
End If
End If
Else
For i As Integer = 0 To Item.LinesCount - 1
text &= (If(String.IsNullOrEmpty(text), "", Environment.NewLine)) & "W"
Next i
End If
Dim height As Integer = CalcTextSizeCore(cache, text, textRect.Width).Height + 1
Return (height + 100 - textRect.Bottom) + 1
End Function
End Class
<ToolboxBitmapAttribute(GetType(MultiLineButtonEdit), "MultiLineButtonEdit.bmp"), ToolboxItem(True), Description("Custom ButtonEdit with multi line support.")> _
Public Class MultiLineButtonEdit
Inherits ButtonEdit
Shared Sub New()
RepositoryItemMultiLineButtonEdit.RegisterMultiLineButtonEdit()
End Sub
Public Sub New()
End Sub
Public Overrides ReadOnly Property EditorTypeName() As String
Get
Return RepositoryItemMultiLineButtonEdit.MultiLineButtonEditName
End Get
End Property
<DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _
Public Shadows ReadOnly Property Properties() As RepositoryItemMultiLineButtonEdit
Get
Return TryCast(MyBase.Properties, RepositoryItemMultiLineButtonEdit)
End Get
End Property
Protected Overrides ReadOnly Property AcceptsReturn() As Boolean
Get
Return Properties.AcceptsReturn
End Get
End Property
Protected Overrides ReadOnly Property AcceptsTab() As Boolean
Get
Return Properties.AcceptsTab
End Get
End Property
Protected Overrides Sub UpdateMaskBoxProperties(ByVal always As Boolean)
MyBase.UpdateMaskBoxProperties(always)
If MaskBox Is Nothing Then
Return
End If
If always OrElse (Not MaskBox.Multiline) Then
MaskBox.Multiline = True
End If
If always OrElse (Not MaskBox.WordWrap) Then
MaskBox.WordWrap = True
End If
If always OrElse Properties.AcceptsTab <> MaskBox.AcceptsTab Then
MaskBox.AcceptsTab = Properties.AcceptsTab
End If
If always OrElse Properties.AcceptsReturn <> MaskBox.AcceptsReturn Then
MaskBox.AcceptsReturn = Properties.AcceptsReturn
End If
If always OrElse Properties.ScrollBars <> MaskBox.ScrollBars Then
MaskBox.ScrollBars = Properties.ScrollBars
End If
End Sub
Protected Overrides Function IsInputKey(ByVal keyData As Keys) As Boolean
Dim result As Boolean = MyBase.IsInputKey(keyData)
If result Then
Return True
End If
If Properties.AcceptsReturn AndAlso keyData = Keys.Enter Then
Return True
End If
If Properties.AcceptsTab AndAlso keyData = Keys.Tab Then
Return True
End If
Return result
End Function
End Class
End Namespace