Procedure runtime debugging and exceptions.

8 files changed, 1182 insertions, 5 deletions

diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/BreakPointSymbolPressedEventArgs.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/BreakPointSymbolPressedEventArgs.cs
new file mode 100644
index 000000000..1728bb565
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/BreakPointSymbolPressedEventArgs.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using Tango.Scripting.Core;
+
+namespace Tango.Scripting.Editors
+{
+    public class BreakPointSymbolPressedEventArgs : EventArgs
+    {
+        public ScriptBreakPointSymbol BreakPointSymbol { get; set; }
+        public Point Position { get; set; }
+    }
+}
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Editing/BreakPointMargin.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Editing/BreakPointMargin.cs
new file mode 100644
index 000000000..e566e6aa9
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Editing/BreakPointMargin.cs
@@ -0,0 +1,285 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Media.TextFormatting;
+using Tango.Scripting.Core;
+using Tango.Scripting.Editors.Document;
+using Tango.Scripting.Editors.Rendering;
+using Tango.Scripting.Editors.Utils;
+
+namespace Tango.Scripting.Editors.Editing
+{
+    public class BreakPointMargin : AbstractMargin, IWeakEventListener
+    {
+        private TextArea textArea;
+        private int maxLineNumberLength = 1;
+        private BitmapSource _arrowBitmap;
+        private ScriptEditor _editor;
+
+        public ObservableCollection<BreakPoint> BreakPoints { get; set; }
+
+        public Brush Background
+        {
+            get { return (Brush)GetValue(BackgroundProperty); }
+            set { SetValue(BackgroundProperty, value); }
+        }
+        public static readonly DependencyProperty BackgroundProperty =
+            DependencyProperty.Register("Background", typeof(Brush), typeof(BreakPointMargin), new PropertyMetadata(new SolidColorBrush(Color.FromRgb(50, 50, 50))));
+
+        public Brush Foreground
+        {
+            get { return (Brush)GetValue(ForegroundProperty); }
+            set { SetValue(ForegroundProperty, value); }
+        }
+        public static readonly DependencyProperty ForegroundProperty =
+            DependencyProperty.Register("Foreground", typeof(Brush), typeof(BreakPointMargin), new PropertyMetadata(Brushes.Red));
+
+        static BreakPointMargin()
+        {
+            DefaultStyleKeyProperty.OverrideMetadata(typeof(BreakPointMargin),
+                                                     new FrameworkPropertyMetadata(typeof(BreakPointMargin)));
+        }
+
+        public BreakPointMargin(ScriptEditor editor)
+        {
+            _editor = editor;
+            BreakPoints = new ObservableCollection<BreakPoint>();
+            BreakPoints.CollectionChanged += BreakPoints_CollectionChanged;
+            RenderOptions.SetEdgeMode(this, EdgeMode.Unspecified);
+
+            _arrowBitmap = new BitmapImage(new Uri($"pack://application:,,,/Tango.Scripting.Editors;component/Images/break_point_arrow.png", UriKind.Absolute));
+        }
+
+        private void BreakPoints_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
+        {
+            InvalidateVisual();
+        }
+
+        protected override Size MeasureOverride(Size availableSize)
+        {
+            return new Size(20, 0);
+        }
+
+        protected override void OnRender(DrawingContext drawingContext)
+        {
+            TextView textView = this.TextView;
+            Size renderSize = this.RenderSize;
+            if (textView != null && textView.VisualLinesValid)
+            {
+                drawingContext.DrawRectangle(Background, new Pen(Background, 1), new Rect(0, 0, ActualWidth, ActualHeight));
+
+                var foreground = Foreground;
+                foreach (VisualLine line in textView.VisualLines)
+                {
+                    int lineNumber = line.FirstDocumentLine.LineNumber;
+
+                    BreakPoint b = BreakPoints.FirstOrDefault(x => x.LineNumber == lineNumber);
+
+                    if (b != null)
+                    {
+                        double y = line.GetTextLineVisualYPosition(line.TextLines[0], VisualYPosition.TextTop);
+                        drawingContext.DrawEllipse(Foreground, new Pen(Brushes.Gainsboro, 1), new Point(10, y - textView.VerticalOffset + 8), 6, 6);
+
+                        if (b.IsActive)
+                        {
+                            drawingContext.DrawImage(_arrowBitmap, new Rect(6, y - textView.VerticalOffset + 2.5, 8.5, 10));
+                        }
+                    }
+                }
+            }
+        }
+
+        protected override void OnTextViewChanged(TextView oldTextView, TextView newTextView)
+        {
+            if (oldTextView != null)
+            {
+                oldTextView.VisualLinesChanged -= TextViewVisualLinesChanged;
+            }
+            base.OnTextViewChanged(oldTextView, newTextView);
+            if (newTextView != null)
+            {
+                newTextView.VisualLinesChanged += TextViewVisualLinesChanged;
+
+                // find the text area belonging to the new text view
+                textArea = newTextView.Services.GetService(typeof(TextArea)) as TextArea;
+            }
+            else
+            {
+                textArea = null;
+            }
+            InvalidateVisual();
+        }
+
+        protected override void OnDocumentChanged(TextDocument oldDocument, TextDocument newDocument)
+        {
+            if (oldDocument != null)
+            {
+                PropertyChangedEventManager.RemoveListener(oldDocument, this, "LineCount");
+            }
+            base.OnDocumentChanged(oldDocument, newDocument);
+            if (newDocument != null)
+            {
+                PropertyChangedEventManager.AddListener(newDocument, this, "LineCount");
+            }
+            OnDocumentLineCountChanged();
+        }
+
+        protected virtual bool ReceiveWeakEvent(Type managerType, object sender, EventArgs e)
+        {
+            if (managerType == typeof(PropertyChangedEventManager))
+            {
+                OnDocumentLineCountChanged();
+                return true;
+            }
+            return false;
+        }
+
+        bool IWeakEventListener.ReceiveWeakEvent(Type managerType, object sender, EventArgs e)
+        {
+            return ReceiveWeakEvent(managerType, sender, e);
+        }
+
+        private void OnDocumentLineCountChanged()
+        {
+            int documentLineCount = Document != null ? Document.LineCount : 1;
+            int newLength = documentLineCount.ToString(CultureInfo.CurrentCulture).Length;
+
+            foreach (var breakPoint in BreakPoints.ToList())
+            {
+                if (breakPoint.LineNumber > documentLineCount)
+                {
+                    BreakPoints.Remove(breakPoint);
+                }
+                else
+                {
+                    try
+                    {
+                        var line = Document.GetLineByNumber(breakPoint.LineNumber);
+                        if (line != null)
+                        {
+                            String lineText = Document.GetText(line.Offset, line.Length);
+                            if (!IsBreakPointValid(lineText))
+                            {
+                                BreakPoints.Remove(breakPoint);
+                            }
+                        }
+                    }
+                    catch { }
+                }
+            }
+
+            // The margin looks too small when there is only one digit, so always reserve space for
+            // at least two digits
+            if (newLength < 2)
+                newLength = 2;
+
+            if (newLength != maxLineNumberLength)
+            {
+                maxLineNumberLength = newLength;
+                InvalidateMeasure();
+            }
+        }
+
+        private void TextViewVisualLinesChanged(object sender, EventArgs e)
+        {
+            InvalidateVisual();
+        }
+
+        protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
+        {
+            // accept clicks even when clicking on the background
+            return new PointHitTestResult(this, hitTestParameters.HitPoint);
+        }
+
+        private VisualLine GetLineNumberByMousePosition(MouseEventArgs e)
+        {
+            Point pos = e.GetPosition(TextView);
+            pos.X = 0;
+            pos.Y += TextView.VerticalOffset;
+            VisualLine vl = TextView.GetVisualLineFromVisualTop(pos.Y);
+            return vl;
+        }
+
+        private bool IsBreakPointValid(String lineText)
+        {
+            if (lineText.EndsWith(";") && !lineText.StartsWith("using"))
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        protected override void OnPreviewMouseMove(MouseEventArgs e)
+        {
+            base.OnPreviewMouseMove(e);
+
+            if (_editor.DisableBreakPoints)
+            {
+                Cursor = Cursors.No;
+            }
+            else
+            {
+                Cursor = Cursors.Arrow;
+            }
+        }
+
+        protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
+        {
+            base.OnMouseLeftButtonDown(e);
+
+            if (_editor.DisableBreakPoints)
+            {
+                return;
+            }
+
+            try
+            {
+                if (!e.Handled && TextView != null && textArea != null)
+                {
+                    e.Handled = true;
+                    textArea.Focus();
+
+                    var visualLine = GetLineNumberByMousePosition(e);
+
+                    int? lineNumber = visualLine != null ? (int?)visualLine.FirstDocumentLine.LineNumber : null;
+
+                    if (lineNumber != null)
+                    {
+                        var breakPoint = BreakPoints.FirstOrDefault(x => x.LineNumber == lineNumber.Value);
+                        if (breakPoint != null)
+                        {
+                            BreakPoints.Remove(breakPoint);
+                        }
+                        else
+                        {
+                            var lineText = Document.GetText(visualLine.FirstDocumentLine.Offset, visualLine.FirstDocumentLine.Length).Trim();
+
+                            if (IsBreakPointValid(lineText))
+                            {
+                                BreakPoint newBreakPoint = new BreakPoint();
+                                newBreakPoint.LineNumber = lineNumber.Value;
+                                BreakPoints.Add(newBreakPoint);
+                            }
+                        }
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine(ex);
+            }
+        }
+    }
+}
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Images/break_point_arrow.png b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Images/break_point_arrow.png
new file mode 100644
index 000000000..e8d367028
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Images/break_point_arrow.png
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/HideIntellisenseAttribute.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/HideIntellisenseAttribute.cs
new file mode 100644
index 000000000..548bd909e
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/HideIntellisenseAttribute.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Tango.Scripting.Editors.Intellisense
+{
+    public class HideIntellisenseAttribute : Attribute
+    {
+    }
+}
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownType.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownType.cs
index 3dc796152..c2e7ac422 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownType.cs
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownType.cs
@@ -137,6 +137,8 @@ namespace Tango.Scripting.Editors.Intellisense
                     {
                         var method = methods[i];
 
+                        if (method.GetCustomAttribute<HideIntellisenseAttribute>() != null) continue;
+
                         KnownTypeMethod m = new KnownTypeMethod(this);
                         m.Name = method.Name;
                         m.ReturnType = method.ReturnType;
@@ -183,17 +185,14 @@ namespace Tango.Scripting.Editors.Intellisense
 
                 //Load Properties
                 {
-                    if (Type == typeof(Color))
-                    {
-
-                    }
-
                     var properties = Type.GetProperties(BindingFlags.FlattenHierarchy | BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static).ToList();
 
                     for (int i = 0; i < properties.Count; i++)
                     {
                         var property = properties[i];
 
+                        if (property.GetCustomAttribute<HideIntellisenseAttribute>() != null) continue;
+
                         KnownTypeProperty p = new KnownTypeProperty(this);
                         p.Name = property.Name;
                         p.ReturnType = property.PropertyType;
@@ -211,6 +210,8 @@ namespace Tango.Scripting.Editors.Intellisense
                     {
                         var ev = events[i];
 
+                        if (ev.GetCustomAttribute<HideIntellisenseAttribute>() != null) continue;
+
                         KnownTypeEvent p = new KnownTypeEvent(this);
                         p.Name = ev.Name;
 
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/ScriptEditor.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/ScriptEditor.cs
index c650ad425..b355ba818 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/ScriptEditor.cs
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/ScriptEditor.cs
@@ -47,7 +47,10 @@ namespace Tango.Scripting.Editors
         private char[] word_separators = { ' ', '\t', '\n', '.', '(', ',', '-', '*', '/', '+', '$', '=', '<', '>' };
         private string[] _blocking_type_words = { "class", "void" };
 
+        public event EventHandler<BreakPointSymbolPressedEventArgs> BreakPointSymbolPressed;
+
         private DispatcherTimer _update_timer;
+        private BreakPointMargin breakPointMargin;
         private Popup _popup;
         private FoldingManager foldingManager;
         private BraceFoldingStrategy foldingStrategy;
@@ -58,6 +61,11 @@ namespace Tango.Scripting.Editors
         private List<ScriptType> _declaredTypes;
         private bool _isLoadingTypes;
         private TextMarkerService errorMarkerService;
+        private List<ScriptBreakPointSymbol> _breakPointSymbols;
+        private int _breakPointLineNumber;
+        private ScriptBreakPointSymbol _currentBreakPointSymbol;
+        private Point _currentBreakPointSymbolPosition;
+
         private static JsonSerializerSettings _jsonSettings;
         private static Dictionary<Type, KnownType> _knownTypesCache;
         private static String KNOWN_TYPES_CACHE_FOLDER;
@@ -199,6 +207,39 @@ namespace Tango.Scripting.Editors
         public static readonly DependencyProperty ErrorLineBrushProperty =
             DependencyProperty.Register("ErrorLineBrush", typeof(Brush), typeof(ScriptEditor), new PropertyMetadata(new SolidColorBrush(Colors.Red) { Opacity = 0.5 }));
 
+        public Brush DebugLineBrush
+        {
+            get { return (Brush)GetValue(DebugLineBrushProperty); }
+            set { SetValue(DebugLineBrushProperty, value); }
+        }
+        public static readonly DependencyProperty DebugLineBrushProperty =
+            DependencyProperty.Register("DebugLineBrush", typeof(Brush), typeof(ScriptEditor), new PropertyMetadata(new SolidColorBrush(Colors.Gray) { Opacity = 0.5 }));
+
+        public Brush BreakPointLineBrush
+        {
+            get { return (Brush)GetValue(BreakPointLineBrushProperty); }
+            set { SetValue(BreakPointLineBrushProperty, value); }
+        }
+        public static readonly DependencyProperty BreakPointLineBrushProperty =
+            DependencyProperty.Register("BreakPointLineBrush", typeof(Brush), typeof(ScriptEditor), new PropertyMetadata(new SolidColorBrush(Colors.Yellow) { Opacity = 0.5 }));
+
+        public IScriptSource ScriptSource
+        {
+            get { return (IScriptSource)GetValue(ScriptSourceProperty); }
+            set { SetValue(ScriptSourceProperty, value); }
+        }
+        public static readonly DependencyProperty ScriptSourceProperty =
+            DependencyProperty.Register("ScriptSource", typeof(IScriptSource), typeof(ScriptEditor), new PropertyMetadata(null));
+
+        public bool DisableBreakPoints
+        {
+            get { return (bool)GetValue(DisableBreakPointsProperty); }
+            set { SetValue(DisableBreakPointsProperty, value); }
+        }
+        public static readonly DependencyProperty DisableBreakPointsProperty =
+            DependencyProperty.Register("DisableBreakPoints", typeof(bool), typeof(ScriptEditor), new PropertyMetadata(false));
+
+
         #endregion
 
         #region Constructors
@@ -337,6 +378,17 @@ namespace Tango.Scripting.Editors
             TextArea.TextView.LineTransformers.Add(errorMarkerService);
 
             Unloaded += ScriptEditor_Unloaded;
+
+            breakPointMargin = new BreakPointMargin(this);
+            _breakPointSymbols = new List<ScriptBreakPointSymbol>();
+            Loaded += ScriptEditor_Loaded;
+
+            MouseMove += ScriptEditor_MouseMove;
+        }
+
+        private void ScriptEditor_Loaded(object sender, RoutedEventArgs e)
+        {
+            TextArea.LeftMargins.Insert(0, breakPointMargin);
         }
 
         private void ScriptEditor_Unloaded(object sender, RoutedEventArgs e)
@@ -500,6 +552,8 @@ namespace Tango.Scripting.Editors
 
         private void TextArea_TextEntered(object sender, TextCompositionEventArgs e)
         {
+            if (IsReadOnly) return;
+
             try
             {
                 List<Object> items = new List<object>();
@@ -2505,6 +2559,47 @@ namespace Tango.Scripting.Editors
             Document.EndUpdate();
         }
 
+        public void HighlightDebugLine(int lineNumber)
+        {
+            Document.BeginUpdate();
+
+            var line = Document.GetLineByNumber(lineNumber);
+            OffsetColorizer errorLineColrizer = new OffsetColorizer(line, line.Offset, line.EndOffset, DebugLineBrush);
+            TextArea.TextView.LineTransformers.Add(errorLineColrizer);
+
+            Document.EndUpdate();
+        }
+
+        public void HighlightBreakPoint(int lineNumber, List<ScriptBreakPointSymbol> symbols)
+        {
+            _breakPointLineNumber = lineNumber;
+            _breakPointSymbols = symbols.ToList();
+            _currentBreakPointSymbol = null;
+
+            Document.BeginUpdate();
+
+            var line = Document.GetLineByNumber(lineNumber);
+            OffsetColorizer errorLineColrizer = new OffsetColorizer(line, line.Offset, line.EndOffset, BreakPointLineBrush);
+            TextArea.TextView.LineTransformers.Add(errorLineColrizer);
+
+            var breakPoint = breakPointMargin.BreakPoints.FirstOrDefault(x => x.LineNumber == lineNumber);
+            breakPoint.IsActive = true;
+            breakPointMargin.InvalidateVisual();
+
+            Document.EndUpdate();
+        }
+
+        public void ResetBreakPointLine()
+        {
+            _breakPointSymbols = new List<ScriptBreakPointSymbol>();
+            _currentBreakPointSymbol = null;
+            ResetColorizationByKeyword();
+            breakPointMargin.BreakPoints.ToList().ForEach(x => x.IsActive = false);
+            Mouse.OverrideCursor = null;
+            ClearErrors();
+            breakPointMargin.InvalidateVisual();
+        }
+
         public Point? GetLineVisualPosition(int lineNumber)
         {
             double top = TextArea.TextView.GetVisualTopByDocumentLine(lineNumber);
@@ -2521,6 +2616,140 @@ namespace Tango.Scripting.Editors
             return null;
         }
 
+        public List<ScriptBreakPoint> GetBreakPoints()
+        {
+            List<ScriptBreakPoint> breakPoints = new List<ScriptBreakPoint>();
+
+            foreach (var b in breakPointMargin.BreakPoints)
+            {
+                ScriptBreakPoint breakPoint = new ScriptBreakPoint();
+                breakPoint.Script = ScriptSource;
+                breakPoint.LineNumber = b.LineNumber;
+
+                var line = Document.GetLineByNumber(b.LineNumber);
+                breakPoint.LineStartOffset = line.Offset;
+                breakPoint.LineEndOffset = line.EndOffset;
+
+                var symbols = _parser.GetContextSymbols(Document.Text, line.Offset);
+
+                foreach (var symbol in symbols.Where(x => (x.Kind == SymbolKind.Property || x.Kind == SymbolKind.Field || x.Kind == SymbolKind.Local || x.Kind == SymbolKind.Parameter) && !x.IsUnassigned))
+                {
+                    if (symbol.Offset < line.Offset)
+                    {
+                        breakPoint.ContextSymbols.Add(new ScriptBreakPointSymbol()
+                        {
+                            Name = symbol.Name,
+                            Offset = symbol.Offset,
+                            Length = symbol.Length,
+                        });
+                    }
+                }
+
+                breakPoints.Add(breakPoint);
+            }
+
+            return breakPoints;
+        }
+
+        #endregion
+
+        #region BreakPoint Symbols Search
+
+        private void ScriptEditor_MouseMove(object sender, MouseEventArgs e)
+        {
+            if (IsReadOnly && _breakPointSymbols.Count > 0)
+            {
+                try
+                {
+                    var word_separators_plus = word_separators.ToList();
+                    word_separators_plus.Add(')');
+                    word_separators_plus.Add(';');
+
+                    var textView = TextArea.TextView;
+                    Point position = e.GetPosition(textView);
+                    position.Y += textView.VerticalOffset;
+                    VisualLine visualLine = textView.GetVisualLineFromVisualTop(position.Y);
+                    int columnIndex = visualLine.GetVisualColumnFloor(position, false);
+                    String line = Document.GetText(visualLine.FirstDocumentLine.Offset, visualLine.FirstDocumentLine.Length);
+                    if (columnIndex < line.Length)
+                    {
+                        int wordStartIndex = columnIndex;
+                        int wordEndIndex = columnIndex;
+
+                        while (wordStartIndex > 0)
+                        {
+                            if (word_separators_plus.Contains(line[wordStartIndex])) break;
+                            wordStartIndex--;
+                        }
+
+                        while (wordEndIndex < line.Length)
+                        {
+                            if (word_separators_plus.Contains(line[wordEndIndex])) break;
+                            wordEndIndex++;
+                        }
+
+                        if (wordStartIndex > 0)
+                        {
+                            wordStartIndex++;
+                        }
+
+                        String word = line.Substring(wordStartIndex, wordEndIndex - wordStartIndex);
+
+                        var breakPointSymbol = _breakPointSymbols.FirstOrDefault(x => x.Name == word);
+
+                        if (breakPointSymbol != null)
+                        {
+                            int wordStartOffset = visualLine.FirstDocumentLine.Offset + wordStartIndex;
+
+                            ClearErrors();
+                            ITextMarker marker = errorMarkerService.Create(wordStartOffset, word.Length);
+                            marker.MarkerTypes = TextMarkerTypes.NormalUnderline;
+                            marker.MarkerColor = Colors.Yellow;
+                            Mouse.OverrideCursor = Cursors.Hand;
+
+                            _currentBreakPointSymbol = breakPointSymbol;
+                            _currentBreakPointSymbolPosition = visualLine.GetVisualPosition(wordEndIndex, VisualYPosition.LineTop);
+                        }
+                        else
+                        {
+                            _currentBreakPointSymbol = null;
+                            Mouse.OverrideCursor = null;
+                            ClearErrors();
+                        }
+                    }
+                    else
+                    {
+                        _currentBreakPointSymbol = null;
+                        Mouse.OverrideCursor = null;
+                        ClearErrors();
+                    }
+                }
+                catch (Exception ex)
+                {
+                    _currentBreakPointSymbol = null;
+                    Mouse.OverrideCursor = null;
+                    ClearErrors();
+                    Debug.WriteLine(ex.Message);
+                }
+            }
+        }
+
+        protected override void OnPreviewMouseLeftButtonUp(MouseButtonEventArgs e)
+        {
+            base.OnPreviewMouseLeftButtonUp(e);
+
+            if (_currentBreakPointSymbol != null)
+            {
+                Mouse.OverrideCursor = null;
+                Debug.WriteLine($"Pressed on break point symbol: {_currentBreakPointSymbol.Name}");
+                BreakPointSymbolPressed?.Invoke(this, new BreakPointSymbolPressedEventArgs()
+                {
+                    BreakPointSymbol = _currentBreakPointSymbol,
+                    Position = _currentBreakPointSymbolPosition
+                });
+            }
+        }
+
         #endregion
     }
 }
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Tango.Scripting.Editors.csproj b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Tango.Scripting.Editors.csproj
index a70bbf3de..11e023f86 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Tango.Scripting.Editors.csproj
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Tango.Scripting.Editors.csproj
@@ -180,6 +180,7 @@
       <Link>GlobalVersionInfo.cs</Link>
     </Compile>
     <Compile Include="AvalonEditCommands.cs" />
+    <Compile Include="BreakPointSymbolPressedEventArgs.cs" />
     <Compile Include="CachedAssembly.cs" />
     <Compile Include="CachedUsing.cs" />
     <Compile Include="CodeCompletion\CompletionListBox.cs" />
@@ -196,6 +197,7 @@
     <Compile Include="CodeCompletion\OverloadViewer.cs" />
     <Compile Include="Converters\BooleanToVisibilityConverter.cs" />
     <Compile Include="Converters\BooleanToVisibilityInversedConverter.cs" />
+    <Compile Include="Editing\BreakPointMargin.cs" />
     <Compile Include="Errors\ITextMarker.cs" />
     <Compile Include="Errors\TextMarkerService.cs" />
     <Compile Include="ExtensionMethods.cs" />
@@ -207,6 +209,7 @@
     <Compile Include="Intellisense\EventCompletionItem.cs" />
     <Compile Include="Intellisense\FieldCompletionItem.cs" />
     <Compile Include="Intellisense\FieldCompletionItemPopup.cs" />
+    <Compile Include="Intellisense\HideIntellisenseAttribute.cs" />
     <Compile Include="Intellisense\ICompletionItem.cs" />
     <Compile Include="Intellisense\ICompletionProvider.cs" />
     <Compile Include="Intellisense\InterfaceCompletionItem.cs" />
@@ -651,6 +654,9 @@
   <ItemGroup>
     <Resource Include="Images\snippet.png" />
   </ItemGroup>
+  <ItemGroup>
+    <Resource Include="Images\break_point_arrow.png" />
+  </ItemGroup>
   <ProjectExtensions>
     <VisualStudio>
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diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Tango.Scripting.Editors_di35u2uj_wpftmp.csproj b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Tango.Scripting.Editors_di35u2uj_wpftmp.csproj
new file mode 100644
index 000000000..70a4840c4
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Tango.Scripting.Editors_di35u2uj_wpftmp.csproj
@@ -0,0 +1,628 @@
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