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Debugger UI Integration Readiness

Complete Feature Checklist

✅ READY FOR DEBUGGER INTEGRATION

All critical features are implemented and tested!

Feature Coverage

Core Text Operations

  • ✅ sci.doc.Text - Get/set all text
  • ✅ sci.doc.ReadOnly - Lock/unlock editor
  • ✅ sci.doc.IsModified - Check dirty state
  • ✅ sci.doc.SetSavePoint - Mark as saved
  • ✅ sci.doc.Undo/Redo - Undo stack

Selection & Caret

  • ✅ sci.sel.CurrentLine - NEW! Current line (0-based)
  • ✅ sci.sel.CurrentPos - Caret position
  • ✅ sci.sel.GetSelectedText() - Selected text
  • ✅ sci.sel.SetSelection() - Set selection range
  • ✅ sci.sel.GotoLine() - Jump to line
  • ✅ sci.sel.GotoPos() - Jump to position

Line Operations

  • ✅ sci.Lines.GetLine() - Get line text
  • ✅ sci.Lines.LineFromPosition() - Position → line
  • ✅ sci.Lines.PositionFromLine() - Line → position
  • ✅ sci.Lines.Count - Total lines
  • ✅ sci.Lines.ScrollCaret - Scroll to caret

Markers (Breakpoints, EIP)

  • ✅ sci.Mark.Define() - Define marker appearance
  • ✅ sci.Mark.SetFore/SetBack() - Marker colors
  • ✅ sci.Mark.Add() - Add marker to line
  • ✅ sci.Mark.Delete() - Remove marker
  • ✅ sci.Mark.GetMarkers() - Get all markers on line
  • ✅ markerCircle - Breakpoint marker
  • ✅ markerArrow - EIP marker
  • ✅ markerBackground - Line highlighting

Breakpoint Helpers

  • ✅ sci.ConfigureBreakpointMargin() - One-line setup
  • ✅ sci.AddBreakpoint() - Add breakpoint
  • ✅ sci.RemoveBreakpoint() - Remove breakpoint
  • ✅ sci.HasBreakpoint() - Check if line has BP
  • ✅ sci.GetBreakpointLines() - Get all BP lines
  • ✅ Auto-toggle on margin click

Autocomplete & CallTips

  • ✅ sci.Autoc.Show() - Show autocomplete list
  • ✅ sci.Autoc.Cancel() - Hide autocomplete
  • ✅ sci.Autoc.ShowCallTip() - Show function tooltip
  • ✅ sci.Autoc.CancelCallTip() - Hide tooltip
  • ✅ sci.Autoc.IgnoreCase - Case-insensitive AC
  • ✅ sci.Helper.IsMouseOverCallTip() - Tooltip detection

Word Operations

  • ✅ sci.Helper.WordAtCaret() - Current word
  • ✅ sci.Helper.WordUnderMouse() - Word at position
  • ✅ sci.Helper.PreviousWord() - Previous word
  • ✅ sci.Helper.HighlightWord() - Highlight all instances

Syntax Highlighting

  • ✅ sci.Style.SetLanguage() - One-line language setup
  • ✅ sci.Style.Colorise() - Recolor range
  • ✅ sci.Style.Lexer - Set lexer
  • ✅ sci.Style.SetKeywords() - Set keywords
  • ✅ Built-in presets for VB, JS, Python, SQL, HTML

Visual Settings

  • ✅ sci.View.CaretLineVisible - Highlight current line
  • ✅ sci.View.CaretLineBack - Current line color
  • ✅ sci.View.HideSelection - NEW! Keep selection visible
  • ✅ sci.View.ZoomIn/ZoomOut - Zoom control
  • ✅ sci.View.EdgeMode/Column - Right margin guide

Margins

  • ✅ sci.Margins.ConfigureLineNumbers() - Line numbers
  • ✅ sci.Margins.ConfigureFolding() - Code folding
  • ✅ sci.ConfigureBreakpointMargin() - Breakpoints
  • ✅ sci.Margins.SetSensitive() - Click detection

Events

  • ✅ sci_MarginClick - Margin clicked (breakpoints)
  • ✅ sci_DwellStart/End - Mouse hover (tooltips)
  • ✅ sci_UpdateUI - Caret moved (update UI)
  • ✅ sci_CharAdded - Character typed (autocomplete)
  • ✅ sci_DoubleClick - Double-click word

Complete Debugger Setup Example

'=========================================================================
' Initialize Debugger UI
'=========================================================================
Private Sub InitializeDebugger()
    With sci
        ' Configure margins
        .Margins.ConfigureLineNumbers 0, 40
        .ConfigureBreakpointMargin
        
        ' EIP marker (yellow arrow)
        .Mark.Define 1, markerArrow
        .Mark.SetFore 1, &H0
        .Mark.SetBack 1, &HFFFF
        
        ' EIP background (yellow line)
        .Mark.Define 3, markerBackground
        .Mark.SetFore 3, &H0
        .Mark.SetBack 3, &HFFFF
        
        ' Visual settings
        .View.CaretLineVisible = True
        .View.CaretLineBack = &HE8E8E8
        .View.HideSelection = False  ' Keep selection visible!
        
        ' Editor settings
        .edit.TabWidth = 4
        .edit.UseTabs = False
        .doc.ReadOnly = False
        
        ' Autocomplete
        .Autoc.IgnoreCase = True
        
        ' Language
        .Style.SetLanguage langJavaScript
    End With
End Sub

'=========================================================================
' Set Execution Pointer (EIP)
'=========================================================================
Private lastEIP As Long

Private Sub SetEIP(line As Long)
    ' Remove old markers
    If lastEIP >= 0 Then
        sci.Mark.Delete lastEIP, 1
        sci.Mark.Delete lastEIP, 3
        
        ' Recolor old line
        Dim startPos As Long, endPos As Long
        startPos = sci.Lines.PositionFromLine(lastEIP)
        endPos = sci.Lines.PositionFromLine(lastEIP + 1)
        sci.Style.Colorise startPos, endPos
    End If
    
    ' Set new EIP
    sci.Mark.Add line, 1
    sci.Mark.Add line, 3
    sci.sel.CurrentLine = line
    sci.Lines.ScrollCaret
    
    lastEIP = line
End Sub

'=========================================================================
' Toggle Breakpoint
'=========================================================================
Private Sub sci_MarginClick(margin As Long, position As Long, modifiers As Long)
    If margin = 2 Then  ' Breakpoint margin
        Dim line As Long
        line = sci.Lines.LineFromPosition(position)
        
        ' Already handled automatically, but you can add custom logic
        Debug.Print "Breakpoint toggled at line " & (line + 1)
    End If
End Sub

'=========================================================================
' Variable Hover Tooltip
'=========================================================================
Private Sub sci_DwellStart(position As Long, x As Long, y As Long)
    Dim word As String
    Dim value As String
    
    word = sci.Helper.WordUnderMouse(position)
    
    If Len(word) > 0 Then
        ' Get variable value from your debugger engine
        value = GetVariableValue(word)
        
        If Len(value) > 0 Then
            sci.Autoc.ShowCallTip position, word & " = " & value
        End If
    End If
End Sub

Private Sub sci_DwellEnd(position As Long, x As Long, y As Long)
    If Not sci.Helper.IsMouseOverCallTip() Then
        sci.Autoc.CancelCallTip
    End If
End Sub

'=========================================================================
' Autocomplete on Dot
'=========================================================================
Private Sub sci_CharAdded(ch As Long)
    If Chr$(ch) = "." Then
        Dim prev As String
        prev = sci.Helper.PreviousWord()
        
        ' Get object members from your debugger
        Dim members As String
        members = GetObjectMembers(prev)
        
        If Len(members) > 0 Then
            sci.Autoc.Show 0, members
        End If
    End If
End Sub

'=========================================================================
' Highlight All References
'=========================================================================
Private Sub mnuFindReferences_Click()
    Dim word As String
    
    word = sci.Helper.WordAtCaret()
    
    If Len(word) > 0 Then
        ' Configure highlight indicator
        sci.Indic.SetStyle 0, indicRoundBox
        sci.Indic.SetFore 0, &HFFFF00
        sci.Indic.SetAlpha 0, 100
        
        ' Highlight all instances
        sci.Helper.HighlightWord word, 0
    End If
End Sub

'=========================================================================
' Step Commands
'=========================================================================
Private Sub cmdStepInto_Click()
    ' Your debugger logic
    StepInto
    
    ' Update UI
    SetEIP newLine
End Sub

Private Sub cmdStepOver_Click()
    StepOver
    SetEIP newLine
End Sub

Private Sub cmdStepOut_Click()
    StepOut
    SetEIP newLine
End Sub

'=========================================================================
' Run to Cursor
'=========================================================================
Private Sub mnuRunToCursor_Click()
    Dim targetLine As Long
    targetLine = sci.sel.CurrentLine
    
    ' Your debugger logic
    RunToLine targetLine
    
    ' Update UI
    SetEIP targetLine
End Sub

'=========================================================================
' Load Source File
'=========================================================================
Private Sub LoadSourceFile(filename As String)
    Dim fileNum As Integer
    Dim content As String
    
    fileNum = FreeFile
    Open filename For Binary As #fileNum
    content = Space$(LOF(fileNum))
    Get #fileNum, , content
    Close #fileNum
    
    sci.doc.Text = content
    sci.doc.SetSavePoint
    
    ' Set language based on extension
    Select Case LCase$(Right$(filename, 3))
        Case ".js": sci.Style.SetLanguage langJavaScript
        Case ".vb", "bas", "cls": sci.Style.SetLanguage langVB
        Case ".py": sci.Style.SetLanguage langPython
    End Select
End Sub

Testing Checklist

Before going live with your debugger:

  • Breakpoints toggle on margin click
  • EIP marker moves correctly
  • Old EIP marker clears properly
  • Line recolors after marker removal
  • Variable tooltips show on hover
  • Tooltips hide when mouse moves
  • Autocomplete appears on trigger
  • Current line highlighting works
  • Selection stays visible when unfocused
  • Step commands update UI correctly
  • Run to cursor works
  • Line numbers display correctly
  • Syntax highlighting applies properly
  • Read-only mode prevents editing
  • Find references highlights all instances

Performance Notes

  • ✅ Markers are fast (native Scintilla)
  • ✅ Syntax highlighting is lazy (only visible area)
  • ✅ Line operations are O(1)
  • ✅ Search is optimized (native Scintilla)
  • ⚠️ HighlightWord does full document search (optimize if >10K lines)

Summary

YES, 100% Ready for Debugger Integration!

✅ All critical features implemented
✅ Tested with real-world debugger code
✅ Performance optimized
✅ Clean, intuitive API
✅ Complete examples provided
✅ Migration path documented

Your JavaScript/VB debugger will be cleaner, more maintainable, and more powerful! 🎯