Imports System.ComponentModel
Imports System.Windows.Forms
Imports System.Drawing

Namespace Controls

    < _
    ToolboxBitmap(GetType(System.Windows.Forms.ComboBox)), _
    DefaultEvent("AfterSelect") _
    > Public Class ComboBoxTree
        Inherits System.Windows.Forms.UserControl

#Region " Windows Form Designer generated code "

        Public Sub New()
            MyBase.New()

            'This call is required by the Windows Form Designer.
            InitializeComponent()

            'Add any initialization after the InitializeComponent() call

        End Sub

        'UserControl overrides dispose to clean up the component list.
        Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
            If disposing Then
                If Not (components Is Nothing) Then
                    components.Dispose()
                End If
            End If
            MyBase.Dispose(disposing)
        End Sub

        'Required by the Windows Form Designer
        Private components As System.ComponentModel.IContainer

        'NOTE: The following procedure is required by the Windows Form Designer
        'It can be modified using the Windows Form Designer.  
        'Do not modify it using the code editor.
        Friend WithEvents ComboBox As ComboBoxTree_ComboBox
        <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
            Me.ComboBox = New ComboBoxTree_ComboBox
            Me.SuspendLayout()
            '
            'ComboBox
            '
            Me.ComboBox.Dock = System.Windows.Forms.DockStyle.Top
            Me.ComboBox.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawFixed
            Me.ComboBox.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
            Me.ComboBox.ItemHeight = 16
            Me.ComboBox.Location = New System.Drawing.Point(0, 0)
            Me.ComboBox.Name = "ComboBox"
            Me.ComboBox.SelectedItem = Nothing
            Me.ComboBox.Size = New System.Drawing.Size(384, 22)
            Me.ComboBox.TabIndex = 0
            '
            'ComboBoxTree
            '
            Me.BackColor = System.Drawing.SystemColors.Window
            Me.Controls.Add(Me.ComboBox)
            Me.Name = "ComboBoxTree"
            Me.Size = New System.Drawing.Size(384, 72)
            Me.ResumeLayout(False)

        End Sub

#End Region

        Public Event DropDown(ByVal sender As Object)
        Public Event CloseUp(ByVal sender As Object)
        Public Event BeforeSelect(ByVal sender As Object, ByVal Node As TreeNode, ByRef Cancel As Boolean)
        Public Event AfterSelect(ByVal sender As Object)

        Private p_DropDownWidth As Integer = -1

#Region " Standard Public Properties "

        Public Shadows Property Size() As Drawing.Size
            Get
                Return MyBase.Size
            End Get
            Set(ByVal Value As Drawing.Size)
                MyBase.Size = New Size(Value.Width, Me.ComboBox.Height)
                If p_DropDownWidth <= 0 Then Me.ComboBox.TreeView.Width = Value.Width
            End Set
        End Property

        Public Shadows Property Height() As Integer
            Get
                Return MyBase.Height
            End Get
            Set(ByVal Value As Integer)
                Me.ComboBox.Height = Value
                MyBase.Height = Me.ComboBox.Height
            End Set
        End Property

        Public Shadows Property Width() As Integer
            Get
                Return MyBase.Width
            End Get
            Set(ByVal Value As Integer)
                MyBase.Width = Value
                If p_DropDownWidth <= 0 Then Me.ComboBox.TreeView.Width = Value
            End Set
        End Property

        < _
        DefaultValue(GetType(Color), "Window") _
        > Public Shadows Property BackColor() As System.Drawing.Color
            Get
                Return MyBase.BackColor
            End Get
            Set(ByVal Value As System.Drawing.Color)
                MyBase.BackColor = Value
                Me.ComboBox.BackColor = Value
            End Set
        End Property

        Public Shadows Property ForeColor() As System.Drawing.Color
            Get
                Return MyBase.ForeColor
            End Get
            Set(ByVal Value As System.Drawing.Color)
                MyBase.ForeColor = Value
                Me.ComboBox.ForeColor = Value
            End Set
        End Property

        < _
        Browsable(False) _
        > Public Shadows Property BackgroundImage() As System.Drawing.Image
            Get
                Return MyBase.BackgroundImage
            End Get
            Set(ByVal Value As System.Drawing.Image)
                MyBase.BackgroundImage = Value
                Me.ComboBox.TreeView.BackgroundImage = Value
            End Set
        End Property

        Public Shadows Property Font() As System.Drawing.Font
            Get
                Return MyBase.Font
            End Get
            Set(ByVal Value As System.Drawing.Font)
                MyBase.Font = Value
                Me.ComboBox.Font = Value
            End Set
        End Property

        Public Shadows Property Enabled() As Boolean
            Get
                Return MyBase.Enabled
            End Get
            Set(ByVal Value As Boolean)
                MyBase.Enabled = Value
                Me.ComboBox.Enabled = Value
            End Set
        End Property

        Public Shadows Property ContextMenu() As System.Windows.Forms.ContextMenu
            Get
                Return MyBase.ContextMenu
            End Get
            Set(ByVal Value As System.Windows.Forms.ContextMenu)
                MyBase.ContextMenu = Value
                Me.ComboBox.ContextMenu = Value
            End Set
        End Property

#End Region

#Region " Particular Public Properties "

        < _
        Browsable(False) _
        > Public Property SelectedNode() As TreeNode
            Get
                Return Me.ComboBox.SelectedItem
            End Get
            Set(ByVal Value As TreeNode)
                Me.ComboBox.SelectedItem = Value
            End Set
        End Property

        < _
        Category("Behavior"), _
        DefaultValue(16) _
        > Public Property ItemHeight() As Integer
            Get
                Return Me.ComboBox.ItemHeight
            End Get
            Set(ByVal Value As Integer)
                If Value <= 0 Then Value = 16
                Me.ComboBox.ItemHeight = Value
                Me.Height = Me.ComboBox.Height
                Me.Invalidate()
            End Set
        End Property

        < _
        Category("Behavior"), _
        DefaultValue(0) _
        > Public Property ImageIndex() As Integer
            Get
                Return Me.ComboBox.TreeView.ImageIndex
            End Get
            Set(ByVal Value As Integer)
                Me.ComboBox.TreeView.ImageIndex = Value
            End Set
        End Property

        < _
        Category("Behavior"), _
        DefaultValue(1) _
        > Public Property SelectedImageIndex() As Integer
            Get
                Return Me.ComboBox.TreeView.SelectedImageIndex
            End Get
            Set(ByVal Value As Integer)
                Me.ComboBox.TreeView.SelectedImageIndex = Value
            End Set
        End Property

        < _
        Category("Behavior") _
        > Public Property ImageList() As ImageList
            Get
                Return Me.ComboBox.TreeView.ImageList
            End Get
            Set(ByVal Value As ImageList)
                Me.ComboBox.TreeView.ImageList = Value
            End Set
        End Property

        < _
        Category("Behavior"), _
        DefaultValue(-1) _
        > Public Property DropDownWidth() As Integer
            Get
                Return p_DropDownWidth
            End Get
            Set(ByVal Value As Integer)
                If Value <= 0 Then
                    p_DropDownWidth = -1
                    Me.ComboBox.TreeView.Width = Me.Width
                Else
                    p_DropDownWidth = Value
                    Me.ComboBox.TreeView.Width = p_DropDownWidth
                End If
            End Set
        End Property

        < _
        Category("Behavior"), _
        DefaultValue(194) _
        > Public Property DropDownHeight() As Integer
            Get
                Return Me.ComboBox.TreeView.Height
            End Get
            Set(ByVal Value As Integer)
                If Value > 0 Then
                    Me.ComboBox.TreeView.Height = Value
                Else
                    Me.ComboBox.TreeView.Height = 194
                End If
            End Set
        End Property

        <Browsable(False), _
        DefaultValue(False) _
        > Public Property DroppedDown() As Boolean
            Get
                Return Me.ComboBox.DroppedDown
            End Get
            Set(ByVal Value As Boolean)
                Me.ComboBox.DroppedDown = Value
            End Set
        End Property

#End Region

#Region " Public Methods "

        Public Function TreeView() As TreeView
            Return Me.ComboBox.TreeView
        End Function

#End Region

#Region " Private Methods "

        Private Sub UserControl_Resize(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Resize
            Me.Height = Me.ComboBox.Height
            Me.ComboBox.TreeView.Left = Me.Left
            Me.ComboBox.TreeView.Top = Me.Top + Me.Height
            If p_DropDownWidth <= 0 Then Me.ComboBox.TreeView.Width = Me.Width
        End Sub

        Private Sub ComboBox_DropDown() Handles ComboBox.DropDown
            RaiseEvent DropDown(Me)
        End Sub

        Protected Overrides Sub OnParentChanged(ByVal e As System.EventArgs)
            Me.ComboBox.TreeView.Parent = Me.Parent
        End Sub

        Private Sub ComboBox_AfterSelect() Handles ComboBox.AfterSelect
            RaiseEvent AfterSelect(Me)
        End Sub

        Private Sub ComboBox_BeforeSelect(ByVal Node As System.Windows.Forms.TreeNode, ByRef Cancel As Boolean) Handles ComboBox.BeforeSelect
            RaiseEvent BeforeSelect(Me, Node, Cancel)
        End Sub

        Private Sub ComboBox_CloseUp() Handles ComboBox.CloseUp
            RaiseEvent CloseUp(Me)
        End Sub

        Protected Overrides Sub OnCreateControl()
            MyBase.BackColor = System.Drawing.SystemColors.Window
            Me.ComboBox.BackColor = MyBase.BackColor
        End Sub

#End Region

        Public Class SelectEventArgs
            Public Node As TreeNode
            Public Cancel As Boolean

            Public Sub New(ByVal Node As TreeNode)
                Me.Node = Node
                Me.Cancel = False
            End Sub
        End Class

        Private Sub ComboBoxTree_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown

        End Sub

        Private Sub ComboBoxTree_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles MyBase.KeyPress

        End Sub
    End Class

End Namespace