Code:
Imports System.Windows.Forms
Imports FastColoredTextBoxNS
Imports System.Drawing
Imports System.Linq
Imports System.Collections.Generic
Imports System.Text.RegularExpressions
Namespace Tester
Public Partial Class AutocompleteSample2
Inherits Form
Private popupMenu As AutocompleteMenu
Private keywords As String() = {"abstract", "as", "base", "bool", "break", "byte", _
"case", "catch", "char", "checked", "class", "const", _
"continue", "decimal", "default", "delegate", "do", "double", _
"else", "enum", "event", "explicit", "extern", "false", _
"finally", "fixed", "float", "for", "foreach", "goto", _
"if", "implicit", "in", "int", "interface", "internal", _
"is", "lock", "long", "namespace", "new", "null", _
"object", "operator", "out", "override", "params", "private", _
"protected", "public", "readonly", "ref", "return", "sbyte", _
"sealed", "short", "sizeof", "stackalloc", "static", "string", _
"struct", "switch", "this", "throw", "true", "try", _
"typeof", "uint", "ulong", "unchecked", "unsafe", "ushort", _
"using", "virtual", "void", "volatile", "while", "add", _
"alias", "ascending", "descending", "dynamic", "from", "get", _
"global", "group", "into", "join", "let", "orderby", _
"partial", "remove", "select", "set", "value", "var", _
"where", "yield"}
Private methods As String() = {"Equals()", "GetHashCode()", "GetType()", "ToString()"}
Private snippets As String() = {"if(^)" & vbLf & "{" & vbLf & ";" & vbLf & "}", "if(^)" & vbLf & "{" & vbLf & ";" & vbLf & "}" & vbLf & "else" & vbLf & "{" & vbLf & ";" & vbLf & "}", "for(^;;)${" & vbLf & ";" & vbLf & "}", "while(^)" & vbLf & "{" & vbLf & ";" & vbLf & "}", "do${" & vbLf & "^;" & vbLf & "}while();", "switch(^)" & vbLf & "{" & vbLf & "case : break;" & vbLf & "}"}
Private declarationSnippets As String() = {"public class ^" & vbLf & "{" & vbLf & "}", "private class ^" & vbLf & "{" & vbLf & "}", "internal class ^" & vbLf & "{" & vbLf & "}", "public struct ^" & vbLf & "{" & vbLf & ";" & vbLf & "}", "private struct ^" & vbLf & "{" & vbLf & ";" & vbLf & "}", "internal struct ^" & vbLf & "{" & vbLf & ";" & vbLf & "}", _
"public void ^()" & vbLf & "{" & vbLf & ";" & vbLf & "}", "private void ^()" & vbLf & "{" & vbLf & ";" & vbLf & "}", "internal void ^()" & vbLf & "{" & vbLf & ";" & vbLf & "}", "protected void ^()" & vbLf & "{" & vbLf & ";" & vbLf & "}", "public ^{ get; set; }", "private ^{ get; set; }", _
"internal ^{ get; set; }", "protected ^{ get; set; }"}
Public Sub New()
InitializeComponent()
'create autocomplete popup menu
popupMenu = New AutocompleteMenu(fastColoredTextBox1)
popupMenu.Items.ImageList = imageList1
popupMenu.SearchPattern = "[\w\.:=!<>]"
'
BuildAutocompleteMenu()
End Sub
Private Sub BuildAutocompleteMenu()
Dim items As New List(Of AutocompleteItem)()
For Each item As var In snippets
items.Add(New SnippetAutocompleteItem(item) With { _
Key .ImageIndex = 1 _
})
Next
For Each item As var In declarationSnippets
items.Add(New DeclarationSnippet(item) With { _
Key .ImageIndex = 0 _
})
Next
For Each item As var In methods
items.Add(New MethodAutocompleteItem(item) With { _
Key .ImageIndex = 2 _
})
Next
For Each item As var In keywords
items.Add(New AutocompleteItem(item))
Next
items.Add(New InsertSpaceSnippet())
items.Add(New InsertSpaceSnippet("^(\w+)([=<>!:]+)(\w+)$"))
items.Add(New InsertEnterSnippet())
'set as autocomplete source
popupMenu.Items.SetAutocompleteItems(items)
End Sub
''' <summary>
''' This item appears when any part of snippet text is typed
''' </summary>
Private Class DeclarationSnippet
Inherits SnippetAutocompleteItem
Public Sub New(snippet As String)
MyBase.New(snippet)
End Sub
Public Overrides Function Compare(fragmentText As String) As CompareResult
Dim pattern = Regex.Replace(fragmentText, FastColoredTextBoxNS.FindForm.RegexSpecSymbolsPattern, "\$0")
If Regex.IsMatch(Text, "\b" & pattern, RegexOptions.IgnoreCase) Then
Return CompareResult.Visible
End If
Return CompareResult.Hidden
End Function
End Class
''' <summary>
''' Divides numbers and words: "123AND456" -> "123 AND 456"
''' Or "i=2" -> "i = 2"
''' </summary>
Private Class InsertSpaceSnippet
Inherits AutocompleteItem
Private pattern As String
Public Sub New(pattern As String)
MyBase.New("")
Me.pattern = pattern
End Sub
Public Sub New()
Me.New("^(\d*)([a-zA-Z_]+)(\d*)$")
End Sub
Public Overrides Function Compare(fragmentText As String) As CompareResult
If Regex.IsMatch(fragmentText, pattern) Then
Text = InsertSpaces(fragmentText)
If Text <> fragmentText Then
Return CompareResult.Visible
End If
End If
Return CompareResult.Hidden
End Function
Public Function InsertSpaces(fragment As String) As String
Dim m = Regex.Match(fragment, pattern)
If m Is Nothing Then
Return fragment
End If
If m.Groups(1).Value = "" AndAlso m.Groups(3).Value = "" Then
Return fragment
End If
Return (m.Groups(1).Value & " " & m.Groups(2).Value & " " & m.Groups(3).Value).Trim()
End Function
Public Overrides ReadOnly Property ToolTipTitle() As String
Get
Return Text
End Get
End Property
End Class
''' <summary>
''' Inerts line break after '}'
''' </summary>
Private Class InsertEnterSnippet
Inherits AutocompleteItem
Private enterPlace As Place = Place.Empty
Public Sub New()
MyBase.New("[Line break]")
End Sub
Public Overrides Function Compare(fragmentText As String) As CompareResult
Dim r = Parent.Fragment.Clone()
While r.Start.iChar > 0
If r.CharBeforeStart = "}"C Then
enterPlace = r.Start
Return CompareResult.Visible
End If
r.GoLeftThroughFolded()
End While
Return CompareResult.Hidden
End Function
Public Overrides Function GetTextForReplace() As String
'extend range
Dim r As Range = Parent.Fragment
Dim [end] As Place = r.[End]
r.Start = enterPlace
r.[End] = r.[End]
'insert line break
Return Environment.NewLine + r.Text
End Function
Public Overrides Sub OnSelected(popupMenu As AutocompleteMenu, e As SelectedEventArgs)
MyBase.OnSelected(popupMenu, e)
If Parent.Fragment.tb.AutoIndent Then
Parent.Fragment.tb.DoAutoIndent()
End If
End Sub
Public Overrides ReadOnly Property ToolTipTitle() As String
Get
Return "Insert line break after '}'"
End Get
End Property
End Class
End Class
End Namespace
