Public Class FindForm
    Inherits System.Windows.Forms.Form

#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

    'Form 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
    Friend WithEvents bttnFind As System.Windows.Forms.Button
    Friend WithEvents bttnFindNext As System.Windows.Forms.Button
    Friend WithEvents bttnReplace As System.Windows.Forms.Button
    Friend WithEvents bttnReplaceAll As System.Windows.Forms.Button
    Friend WithEvents txtSearchWord As System.Windows.Forms.TextBox
    Friend WithEvents txtReplaceWord As System.Windows.Forms.TextBox
    Friend WithEvents chkCase As System.Windows.Forms.CheckBox
    Friend WithEvents chkWord As System.Windows.Forms.CheckBox

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

    '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.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.bttnReplace = New System.Windows.Forms.Button()
        Me.bttnFindNext = New System.Windows.Forms.Button()
        Me.chkWord = New System.Windows.Forms.CheckBox()
        Me.bttnFind = New System.Windows.Forms.Button()
        Me.txtSearchWord = New System.Windows.Forms.TextBox()
        Me.txtReplaceWord = New System.Windows.Forms.TextBox()
        Me.chkCase = New System.Windows.Forms.CheckBox()
        Me.bttnReplaceAll = New System.Windows.Forms.Button()
        Me.SuspendLayout()
        '
        'bttnReplace
        '
        Me.bttnReplace.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.bttnReplace.Location = New System.Drawing.Point(224, 40)
        Me.bttnReplace.Name = "bttnReplace"
        Me.bttnReplace.Size = New System.Drawing.Size(96, 23)
        Me.bttnReplace.TabIndex = 4
        Me.bttnReplace.Text = "Replace"
        '
        'bttnFindNext
        '
        Me.bttnFindNext.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.bttnFindNext.Location = New System.Drawing.Point(336, 8)
        Me.bttnFindNext.Name = "bttnFindNext"
        Me.bttnFindNext.Size = New System.Drawing.Size(96, 23)
        Me.bttnFindNext.TabIndex = 3
        Me.bttnFindNext.Text = "Find Next"
        '
        'chkWord
        '
        Me.chkWord.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.chkWord.Location = New System.Drawing.Point(8, 96)
        Me.chkWord.Name = "chkWord"
        Me.chkWord.Size = New System.Drawing.Size(152, 24)
        Me.chkWord.TabIndex = 7
        Me.chkWord.Text = "Whole Word Only"
        '
        'bttnFind
        '
        Me.bttnFind.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.bttnFind.Location = New System.Drawing.Point(224, 8)
        Me.bttnFind.Name = "bttnFind"
        Me.bttnFind.Size = New System.Drawing.Size(96, 23)
        Me.bttnFind.TabIndex = 2
        Me.bttnFind.Text = "Find"
        '
        'txtSearchWord
        '
        Me.txtSearchWord.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.txtSearchWord.Location = New System.Drawing.Point(8, 8)
        Me.txtSearchWord.Name = "txtSearchWord"
        Me.txtSearchWord.Size = New System.Drawing.Size(200, 22)
        Me.txtSearchWord.TabIndex = 0
        Me.txtSearchWord.Text = ""
        '
        'txtReplaceWord
        '
        Me.txtReplaceWord.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.txtReplaceWord.Location = New System.Drawing.Point(8, 40)
        Me.txtReplaceWord.Name = "txtReplaceWord"
        Me.txtReplaceWord.Size = New System.Drawing.Size(200, 22)
        Me.txtReplaceWord.TabIndex = 1
        Me.txtReplaceWord.Text = ""
        '
        'chkCase
        '
        Me.chkCase.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.chkCase.Location = New System.Drawing.Point(8, 72)
        Me.chkCase.Name = "chkCase"
        Me.chkCase.Size = New System.Drawing.Size(152, 24)
        Me.chkCase.TabIndex = 6
        Me.chkCase.Text = "Case Sensitive"
        '
        'bttnReplaceAll
        '
        Me.bttnReplaceAll.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.bttnReplaceAll.Location = New System.Drawing.Point(336, 40)
        Me.bttnReplaceAll.Name = "bttnReplaceAll"
        Me.bttnReplaceAll.Size = New System.Drawing.Size(96, 23)
        Me.bttnReplaceAll.TabIndex = 5
        Me.bttnReplaceAll.Text = "Replace All"
        '
        'FindForm
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(440, 125)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.chkWord, Me.chkCase, Me.bttnReplaceAll, Me.bttnReplace, Me.bttnFindNext, Me.bttnFind, Me.txtReplaceWord, Me.txtSearchWord})
        Me.Name = "FindForm"
        Me.Text = "Search & Replace"
        Me.TopMost = True
        Me.ResumeLayout(False)

    End Sub

#End Region

    Dim RTFForm As Form
    Private Sub txtSearchWord_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSearchWord.TextChanged
        If txtSearchWord.Text.Length > 0 Then
            bttnFind.Enabled = True
            bttnFindNext.Enabled = True
        Else
            bttnFind.Enabled = False
            bttnFindNext.Enabled = False
        End If
        If txtReplaceWord.Text.Length > 0 Then
            bttnReplace.Enabled = True
            bttnReplaceAll.Enabled = True
        Else
            bttnReplace.Enabled = False
            bttnReplaceAll.Enabled = False
        End If
    End Sub

    Private Sub bttnFind_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bttnFind.Click
        Dim wordAt As Integer
        Dim srchMode As RichTextBoxFinds

        srchMode = SetSearchMode()
        wordAt = EditorForm.RTFBox.Find(txtSearchWord.Text, 0, srchMode)
        If wordAt = -1 Then
            MsgBox("Can't find word")
            Exit Sub
        End If
        EditorForm.RTFBox.Select(wordAt, txtSearchWord.Text.Length)
        bttnFindNext.Enabled = True
        bttnReplace.Enabled = True
        bttnReplaceAll.Enabled = True
        EditorForm.RTFBox.ScrollToCaret()
    End Sub

    Private Sub bttnFindNext_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bttnFindNext.Click
        Dim selStart As Integer
        Dim srchMode As CompareMethod
        srchMode = SetSearchMode()

        selStart = InStr(EditorForm.RTFBox.SelectionStart + 2, EditorForm.RTFBox.Text, txtSearchWord.Text, srchMode)
        If selStart = 0 Then
            MsgBox("No more matches")
            Exit Sub
        End If
        EditorForm.RTFBox.Select(selStart - 1, txtSearchWord.Text.Length)
        EditorForm.RTFBox.ScrollToCaret()
    End Sub

    Private Sub bttnReplaceAll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bttnReplaceAll.Click
        Dim curPos, curSel As Integer
        curPos = EditorForm.RTFBox.SelectionStart
        curSel = EditorForm.RTFBox.SelectionLength
        EditorForm.RTFBox.Text = Replace(EditorForm.RTFBox.Text, Trim(txtSearchWord.Text), Trim(txtReplaceWord.Text))
        EditorForm.RTFBox.SelectionStart = curPos
        EditorForm.RTFBox.SelectionLength = curSel
    End Sub

    Private Sub bttnReplace_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bttnReplace.Click
        If EditorForm.RTFBox.SelectedText <> "" Then
            EditorForm.RTFBox.SelectedText = txtReplaceWord.Text
        End If
        bttnFindNext_Click(sender, e)
    End Sub

    Function SetSearchMode() As RichTextBoxFinds
        Dim mode As RichTextBoxFinds
        If chkCase.Checked = True Then
            mode = RichTextBoxFinds.MatchCase
        Else
            mode = RichTextBoxFinds.None
        End If
        If chkWord.Checked = True Then
            mode = mode Or RichTextBoxFinds.WholeWord
        Else
            mode = mode Or RichTextBoxFinds.None
        End If
        SetSearchMode = mode
    End Function
End Class