From 499e0a03bb41e2330a47ccca83e6e6dfe7c5a634 Mon Sep 17 00:00:00 2001
From: Roy Ben Shabat <Roy.mail.net@gmail.com>
Date: Wed, 22 Apr 2020 02:08:25 +0300
Subject: Scripting.

---
 .../Tango.Scripting.Basic/GlobalObject.cs          |   4 +-
 .../Scripting/Tango.Scripting.Basic/Project.cs     |  23 +-
 .../Tango.Scripting.Basic/ProjectManager.cs        |  18 --
 .../Tango.Scripting.Basic/ProjectSession.cs        |   6 +-
 .../Tango.Scripting.Basic.csproj                   |   1 -
 .../Tango.Scripting.Editors/CachedUsing.cs         |  20 ++
 .../Tango.Scripting.Editors/Images/event.png       | Bin 0 -> 210 bytes
 .../Intellisense/EventCompletionItem.cs            |  22 ++
 .../Intellisense/KnownType.cs                      |  24 +-
 .../Intellisense/KnownTypeEvent.cs                 |  21 ++
 .../Tango.Scripting.Editors/ScriptEditor.cs        | 334 ++++++++++++++++-----
 .../Tango.Scripting.Editors.csproj                 |   8 +-
 .../Tango.Scripting.Editors/Themes/Generic.xaml    |   3 +
 .../Tango.Scripting.Test/MainWindow.xaml.cs        |   9 +-
 .../Scripting/Tango.Scripting.Test/MainWindowVM.cs |  13 +-
 15 files changed, 384 insertions(+), 122 deletions(-)
 delete mode 100644 Software/Visual_Studio/Scripting/Tango.Scripting.Basic/ProjectManager.cs
 create mode 100644 Software/Visual_Studio/Scripting/Tango.Scripting.Editors/CachedUsing.cs
 create mode 100644 Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Images/event.png
 create mode 100644 Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/EventCompletionItem.cs
 create mode 100644 Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownTypeEvent.cs

(limited to 'Software/Visual_Studio/Scripting')

diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/GlobalObject.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/GlobalObject.cs
index fc48bb2a2..c76fba8e2 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/GlobalObject.cs
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/GlobalObject.cs
@@ -6,8 +6,8 @@ using System.Threading.Tasks;
 
 namespace Tango.Scripting.Basic
 {
-    public class GlobalObject
+    public class GlobalObject<T> where T : IContext
     {
-        public IContext GlobalContext { get; set; }
+        public T GlobalContext { get; set; }
     }
 }
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/Project.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/Project.cs
index 31be3a714..85caf4706 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/Project.cs
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/Project.cs
@@ -18,7 +18,7 @@ using System.IO;
 
 namespace Tango.Scripting.Basic
 {
-    public class Project : ExtendedObject
+    public class Project<T> : ExtendedObject where T : IContext
     {
         private String _name;
         public String Name
@@ -43,6 +43,7 @@ namespace Tango.Scripting.Basic
 
         public ObservableCollection<Script> Scripts { get; set; }
 
+        [JsonIgnore]
         public ObservableCollection<IScriptSource> AdditionalScripts
         {
             get
@@ -78,16 +79,16 @@ namespace Tango.Scripting.Basic
             }
         }
 
-        public static Project New(String name)
+        public static Project<T> New(String name)
         {
-            Project p = new Project();
+            Project<T> p = new Project<T>();
 
             p.Name = name;
 
             p.ReferenceAssemblies.Add(new ReferenceAssembly() { FromType = typeof(String) });
             p.ReferenceAssemblies.Add(new ReferenceAssembly() { FromType = typeof(Enumerable) });
             p.ReferenceAssemblies.Add(new ReferenceAssembly() { FromType = typeof(Form) });
-            p.ReferenceAssemblies.Add(new ReferenceAssembly() { FromType = typeof(Project) });
+            p.ReferenceAssemblies.Add(new ReferenceAssembly() { FromType = typeof(Project<T>) });
             return p;
         }
 
@@ -140,14 +141,14 @@ namespace Tango.Scripting.Basic
                     }
                     else
                     {
-                        code += Environment.NewLine + Environment.NewLine + "return new Program().OnExecute(GlobalContext);";
+                        code += Environment.NewLine + Environment.NewLine + "new Program().OnExecute(GlobalContext);";
                         mainScriptCode = code;
                     }
                 }
 
                 var scriptOptions = ScriptOptions.Default.WithReferences(ReferenceAssembliesLoaded);
 
-                var s = CSharpScript.Create<object>(mainScriptCode, scriptOptions, typeof(GlobalObject));
+                var s = CSharpScript.Create<object>(mainScriptCode, scriptOptions, typeof(GlobalObject<T>));
                 result.Script = s;
 
                 var compileResults = s.Compile();
@@ -164,7 +165,7 @@ namespace Tango.Scripting.Basic
                     cError.Message = error.GetMessage();
                     cError.Severity = error.Severity;
                     var line = error.Location.GetMappedLineSpan();
-                    cError.Line = line.StartLinePosition.Line + 1 + (errorScript != null ? errorScript.LoadCount : 0);
+                    cError.Line = line.StartLinePosition.Line + 1 - (errorScript != null ? errorScript.LoadCount : 0);
                     cError.Column = line.StartLinePosition.Character + 1;
                     cError.Length = line.EndLinePosition.Character - line.StartLinePosition.Character;
                     result.Errors.Add(cError);
@@ -174,7 +175,7 @@ namespace Tango.Scripting.Basic
             });
         }
 
-        public async Task<ProjectSession> Run(IContext context)
+        public async Task<ProjectSession<T>> Run(T context)
         {
             var result = await Compile();
 
@@ -184,9 +185,9 @@ namespace Tango.Scripting.Basic
             }
 
             Thread scriptThread = null;
-            ProjectSession session = null;
+            ProjectSession<T> session = null;
 
-            session = new ProjectSession(this, () =>
+            session = new ProjectSession<T>(this, () =>
             {
                 scriptThread.Abort();
             });
@@ -195,7 +196,7 @@ namespace Tango.Scripting.Basic
             {
                 try
                 {
-                    var runResult = result.Script.RunAsync(globals: new GlobalObject() { GlobalContext = context }).Result;
+                    var runResult = result.Script.RunAsync(globals: new GlobalObject<T>() { GlobalContext = context }).Result;
                     session.Completed(runResult.ReturnValue);
                 }
                 catch (ThreadAbortException)
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/ProjectManager.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/ProjectManager.cs
deleted file mode 100644
index 3af7530bc..000000000
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/ProjectManager.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Tango.Scripting.Basic
-{
-    public class ProjectManager
-    {
-        public Project Project { get; set; }
-
-        public ProjectManager(Project project)
-        {
-            Project = project;
-        }
-    }
-}
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/ProjectSession.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/ProjectSession.cs
index 565949402..6bd3d44b9 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/ProjectSession.cs
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/ProjectSession.cs
@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace Tango.Scripting.Basic
 {
-    public class ProjectSession
+    public class ProjectSession<T> where T : IContext
     {
         private Action _abortAction;
         private TaskCompletionSource<object> _completion;
@@ -15,9 +15,9 @@ namespace Tango.Scripting.Basic
 
         public ProjectSessionState State { get; set; }
 
-        public Project Project { get; set; }
+        public Project<T> Project { get; set; }
 
-        public ProjectSession(Project project, Action abortAction)
+        public ProjectSession(Project<T> project, Action abortAction)
         {
             _completion = new TaskCompletionSource<object>();
             Project = project;
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/Tango.Scripting.Basic.csproj b/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/Tango.Scripting.Basic.csproj
index 8af52748a..be52ca57a 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/Tango.Scripting.Basic.csproj
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Basic/Tango.Scripting.Basic.csproj
@@ -136,7 +136,6 @@
     <Compile Include="CompilationResult.cs" />
     <Compile Include="GlobalObject.cs" />
     <Compile Include="Project.cs" />
-    <Compile Include="ProjectManager.cs" />
     <Compile Include="ReferenceAssembly.cs" />
     <Compile Include="Properties\AssemblyInfo.cs">
       <SubType>Code</SubType>
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/CachedUsing.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/CachedUsing.cs
new file mode 100644
index 000000000..4a663bee9
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/CachedUsing.cs
@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Tango.Scripting.Editors.Intellisense;
+
+namespace Tango.Scripting.Editors
+{
+    public class CachedUsing
+    {
+        public String Namespace { get; set; }
+        public List<KnownType> KnownTypes { get; set; }
+
+        public CachedUsing()
+        {
+            KnownTypes = new List<KnownType>();
+        }
+    }
+}
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Images/event.png b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Images/event.png
new file mode 100644
index 000000000..4566835c0
Binary files /dev/null and b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Images/event.png differ
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/EventCompletionItem.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/EventCompletionItem.cs
new file mode 100644
index 000000000..5c510c39f
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/EventCompletionItem.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Media.Imaging;
+
+namespace Tango.Scripting.Editors.Intellisense
+{
+    public class EventCompletionItem : CompletionItem
+    {
+        private static BitmapSource image = GetImage("event.png");
+
+        public override string Text => Name;
+        public override CompletionItemPopupControl PopupControl => new FieldCompletionItemPopup();
+        public override BitmapSource Image => image;
+
+        public String Name { get; set; }
+        public String Class { get; set; }
+        public String Type { get; set; }
+    }
+}
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 6675eb582..3dc465541 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownType.cs
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownType.cs
@@ -6,6 +6,7 @@ using System.Linq;
 using System.Reflection;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows.Forms;
 using System.Xml;
 using Tango.Core;
 
@@ -15,15 +16,17 @@ namespace Tango.Scripting.Editors.Intellisense
     {
         private bool _initialized;
 
+        public String Alias { get; set; }
         public bool DocumentationLoaded { get; set; }
         public Type Type { get; private set; }
-        public String Name { get; private set; }
+        public String Name { get; set; }
         public String TypeDefinition { get; private set; }
         public String FriendlyName { get; private set; }
         public String Summary { get; set; }
         public List<KnownTypeConstructor> Constructors { get; set; }
         public List<KnownTypeMethod> Methods { get; set; }
         public List<KnownTypeProperty> Properties { get; set; }
+        public List<KnownTypeEvent> Events { get; set; }
         public List<KnownTypeMember> Members
         {
             get
@@ -32,6 +35,7 @@ namespace Tango.Scripting.Editors.Intellisense
 
                 members.AddRange(Properties);
                 members.AddRange(Methods);
+                members.AddRange(Events);
 
                 return members.OrderBy(x => x.Name).ToList();
             }
@@ -45,6 +49,7 @@ namespace Tango.Scripting.Editors.Intellisense
             Methods = new List<KnownTypeMethod>();
             Properties = new List<KnownTypeProperty>();
             Fields = new List<KnownTypeField>();
+            Events = new List<KnownTypeEvent>();
             Type = type;
             Name = type.Name;
 
@@ -177,7 +182,7 @@ namespace Tango.Scripting.Editors.Intellisense
 
                 //Load Properties
                 {
-                    var properties = Type.GetProperties(BindingFlags.Public | BindingFlags.Instance).Where(x => x.PropertyType.IsPublic).ToList();
+                    var properties = Type.GetProperties(BindingFlags.FlattenHierarchy | BindingFlags.Public | BindingFlags.Instance).ToList();
 
                     for (int i = 0; i < properties.Count; i++)
                     {
@@ -192,6 +197,21 @@ namespace Tango.Scripting.Editors.Intellisense
                     }
                 }
 
+                //Load Events
+                {
+                    var events = Type.GetRuntimeEvents().ToList();
+
+                    for (int i = 0; i < events.Count; i++)
+                    {
+                        var ev = events[i];
+
+                        KnownTypeEvent p = new KnownTypeEvent(this);
+                        p.Name = ev.Name;
+
+                        Events.Add(p);
+                    }
+                }
+
                 //Load Enum Values
                 {
                     if (Type.IsEnum)
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownTypeEvent.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownTypeEvent.cs
new file mode 100644
index 000000000..7403d2cbd
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Intellisense/KnownTypeEvent.cs
@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Tango.Scripting.Editors.Intellisense
+{
+    public class KnownTypeEvent : KnownTypeMember
+    {
+        public KnownTypeEvent()
+        {
+            Summary = "Loading documentation...";
+        }
+
+        public KnownTypeEvent(KnownType knownType) : this()
+        {
+            Type = knownType;
+        }
+    }
+}
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/ScriptEditor.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/ScriptEditor.cs
index a4493d2c4..29af14ddc 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/ScriptEditor.cs
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/ScriptEditor.cs
@@ -59,10 +59,14 @@ namespace Tango.Scripting.Editors
         private static Dictionary<Type, KnownType> _knownTypesCache;
         private static String KNOWN_TYPES_CACHE_FOLDER;
         private static List<CachedAssembly> _cachedAssemblies;
+        private static List<CachedUsing> _cachedUsings;
         private static bool _isLoadingCachedAssemblies;
         private static bool _isCacheAssembliesLoaded;
+        private static object _loadUsingsLock = new object();
 
-        public static event EventHandler<TangoProgressChangedEventArgs<int>> AssemblyCacheProgress;
+        public static event EventHandler<TangoProgressChangedEventArgs<int>> LoadingSymbolsProgress;
+        public static event EventHandler LoadingSymbolsStarted;
+        public static event EventHandler LoadingSymbolsCompleted;
 
         #region Mini Classes
 
@@ -96,6 +100,8 @@ namespace Tango.Scripting.Editors
 
         #region Properties
 
+        public static List<String> BlockedUsingsCache { get; set; }
+
         /// <summary>
         /// Gets or sets a value indicating whether to enable folding.
         /// </summary>
@@ -164,6 +170,8 @@ namespace Tango.Scripting.Editors
         {
             DefaultStyleKeyProperty.OverrideMetadata(typeof(ScriptEditor), new FrameworkPropertyMetadata(typeof(ScriptEditor)));
 
+            BlockedUsingsCache = new List<string>();
+
             if (KNOWN_TYPES_CACHE_FOLDER == null)
             {
                 KNOWN_TYPES_CACHE_FOLDER = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Twine", "Tango", "Scripting", "Cache");
@@ -178,6 +186,7 @@ namespace Tango.Scripting.Editors
 
             _knownTypesCache = new Dictionary<Type, KnownType>();
             _cachedAssemblies = new List<CachedAssembly>();
+            _cachedUsings = new List<CachedUsing>();
         }
 
         /// <summary>
@@ -458,7 +467,17 @@ namespace Tango.Scripting.Editors
                                 });
                             }
 
-                            foreach (var methodGroup in typeMembers.Where(x => x.GetType() != typeof(KnownTypeMethod)).GroupBy(x => x.Name))
+                            foreach (var ev in typeMembers.OfType<KnownTypeEvent>())
+                            {
+                                data.Add(new EventCompletionItem()
+                                {
+                                    Class = knownType.FriendlyName,
+                                    Name = ev.Name,
+                                    Description = ev.Summary,
+                                });
+                            }
+
+                            foreach (var methodGroup in typeMembers.Where(x => x.GetType() != typeof(KnownTypeMethod) && x.GetType() != typeof(KnownTypeEvent)).GroupBy(x => x.Name))
                             {
                                 var member = methodGroup.First();
 
@@ -469,7 +488,6 @@ namespace Tango.Scripting.Editors
                                     Type = member.ReturnTypeFriendlyName,
                                     Description = member.Summary,
                                 });
-
                             }
                         }
                         else
@@ -558,7 +576,7 @@ namespace Tango.Scripting.Editors
                         {
                             //Maybe static ...
                             var typeText = GetPreviousWord();
-                            knownType = _knownTypes.FirstOrDefault(x => x.FriendlyName == typeText);
+                            knownType = _knownTypes.FirstOrDefault(x => x.FriendlyName == typeText || x.Alias == typeText);
 
                             if (knownType != null)
                             {
@@ -902,7 +920,7 @@ namespace Tango.Scripting.Editors
             IList<ICompletionData> data = completionWindow.CompletionList.CompletionData;
             data.Clear();
 
-            foreach (var item in suggestions)
+            foreach (var item in suggestions.DistinctBy(x => x.Text))
             {
                 data.Add(item);
             }
@@ -984,6 +1002,13 @@ namespace Tango.Scripting.Editors
         {
             if (expression != null)
             {
+                var insideMethodExp = expression.Split('(').LastOrDefault();
+
+                if (insideMethodExp != null)
+                {
+                    expression = insideMethodExp;
+                }
+
                 var tree = expression.Split('.').Select(x => x.Remove(@"\n|\t|\r|\(.*\)|\[.*\]|\s")).ToList();
                 var variableName = tree.FirstOrDefault();
 
@@ -1003,7 +1028,8 @@ namespace Tango.Scripting.Editors
 
                     if (variable != null)
                     {
-                        var knownType = _knownTypes.FirstOrDefault(x => x.FriendlyName == Regex.Replace(variable.Type, "<.+>", "<T>"));
+                        var name = Regex.Replace(variable.Type, "<.+>", "<T>");
+                        var knownType = _knownTypes.FirstOrDefault(x => name == x.FriendlyName || name == x.Alias);
 
                         if (knownType != null)
                         {
@@ -1036,6 +1062,13 @@ namespace Tango.Scripting.Editors
 
             if (expression != null)
             {
+                var insideMethodExp = expression.Split('(').LastOrDefault();
+
+                if (insideMethodExp != null)
+                {
+                    expression = insideMethodExp;
+                }
+
                 var tree = expression.Split('.').Select(x => x.Remove(@"\n|\t|\r|\(.*\)|\[.*\]|\s")).ToList();
                 var variableName = tree.FirstOrDefault();
 
@@ -1250,84 +1283,224 @@ namespace Tango.Scripting.Editors
             return popup;
         }
 
-        public static void LoadCachedAssemblies(List<Assembly> assemblies)
+        public static void LoadUsingsSymbols(List<Assembly> assemblies, List<String> usings)
         {
-            if (_isLoadingCachedAssemblies) return;
+            lock (_loadUsingsLock)
+            {
+                LoadingSymbolsStarted?.Invoke(null, new EventArgs());
 
-            _isLoadingCachedAssemblies = true;
+                var allTypes = assemblies.SelectMany(x => x.GetTypes());
 
-            if (!_isCacheAssembliesLoaded)
-            {
-                foreach (var file in System.IO.Directory.GetFiles(KNOWN_TYPES_CACHE_FOLDER))
+                foreach (var use in usings)
                 {
-                    try
+                    if (!_cachedUsings.Exists(x => x.Namespace == use))
                     {
-                        AssemblyCacheProgress?.Invoke(null, new TangoProgressChangedEventArgs<int>()
+                        var useFileName = System.IO.Path.Combine(KNOWN_TYPES_CACHE_FOLDER, use + ".json");
+
+                        if (File.Exists(useFileName))
                         {
-                            Progress = new TangoProgress<int>()
+                            LoadingSymbolsProgress?.Invoke(null, new TangoProgressChangedEventArgs<int>()
                             {
-                                IsIndeterminate = true,
-                                Maximum = 100,
-                                Message = $"Loading metadata cache for '{System.IO.Path.GetFileName(file)}'..."
-                            }
-                        });
+                                Progress = new TangoProgress<int>()
+                                {
+                                    IsIndeterminate = true,
+                                    Maximum = 100,
+                                    Message = $"Loading symbols for '{use}'..."
+                                }
+                            });
 
-                        var cachedAssembly = JsonConvert.DeserializeObject<CachedAssembly>(System.IO.File.ReadAllText(file), _jsonSettings);
+                            CachedUsing cached = JsonConvert.DeserializeObject<CachedUsing>(File.ReadAllText(useFileName), _jsonSettings);
+                            _cachedUsings.Add(cached);
+                            foreach (var knownType in cached.KnownTypes)
+                            {
+                                _knownTypesCache.Add(knownType.Type, knownType);
+                            }
 
-                        foreach (var knownType in cachedAssembly.KnownTypes)
-                        {
-                            _knownTypesCache.Add(knownType.Type, knownType);
+                            continue;
                         }
 
-                        _cachedAssemblies.Add(cachedAssembly);
-                    }
-                    catch { }
-                }
-
-                _isCacheAssembliesLoaded = true;
-            }
+                        var useTypes = allTypes.Where(x => x.IsVisible && x.IsPublic && x.Namespace == use).ToList();
 
-            foreach (var asm in assemblies)
-            {
-                if (!_cachedAssemblies.Exists(x => x.Name == asm.FullName))
-                {
-                    String asmFileName = System.IO.Path.GetFileName(asm.Location);
+                        CachedUsing cachedUsing = new CachedUsing();
+                        cachedUsing.Namespace = use;
+                        _cachedUsings.Add(cachedUsing);
 
-                    CachedAssembly cachedAssembly = new CachedAssembly();
-                    cachedAssembly.Name = asm.FullName;
-                    _cachedAssemblies.Add(cachedAssembly);
+                        int i = 1;
 
-                    var types = asm.GetTypes().Where(x => x.IsVisible && x.IsPublic && !x.IsPrimitive).ToList();
+                        foreach (var type in useTypes)
+                        {
+                            LoadingSymbolsProgress?.Invoke(null, new TangoProgressChangedEventArgs<int>()
+                            {
+                                Progress = new TangoProgress<int>()
+                                {
+                                    IsIndeterminate = false,
+                                    Maximum = useTypes.Count,
+                                    Value = i++,
+                                    Message = $"Loading symbols for '{use}'..."
+                                }
+                            });
 
-                    int i = 0;
+                            KnownType knownType = new KnownType(type);
 
-                    foreach (var type in types)
-                    {
-                        AssemblyCacheProgress?.Invoke(null, new TangoProgressChangedEventArgs<int>()
-                        {
-                            Progress = new TangoProgress<int>()
+                            if (type.IsPrimitive)
                             {
-                                IsIndeterminate = false,
-                                Maximum = types.Count,
-                                Value = i++,
-                                Message = $"Caching metadata for '{asmFileName}'..."
+                                if (type == typeof(Int32))
+                                {
+                                    knownType.Alias = "int";
+                                }
+                                else if (type == typeof(float))
+                                {
+                                    knownType.Alias = "float";
+                                }
+                                else if (type == typeof(Double))
+                                {
+                                    knownType.Alias = "double";
+                                }
+                                else if (type == typeof(long))
+                                {
+                                    knownType.Alias = "long";
+                                }
+                                else if (type == typeof(bool))
+                                {
+                                    knownType.Alias = "bool";
+                                }
+                                else if (type == typeof(uint))
+                                {
+                                    knownType.Alias = "uint";
+                                }
                             }
-                        });
 
-                        KnownType knownType = new KnownType(type);
-                        _knownTypesCache.Add(type, knownType);
-                        cachedAssembly.KnownTypes.Add(knownType);
-                        knownType.LoadDocumentation();
-                    }
+                            _knownTypesCache.Add(type, knownType);
+                            cachedUsing.KnownTypes.Add(knownType);
+                            knownType.LoadDocumentation();
+                        }
 
-                    String cachedAssemblyFile = System.IO.Path.Combine(KNOWN_TYPES_CACHE_FOLDER, asmFileName);
-                    File.WriteAllText(cachedAssemblyFile, JsonConvert.SerializeObject(cachedAssembly, _jsonSettings));
+                        if (!BlockedUsingsCache.Exists(x => x == use))
+                        {
+                            Task.Factory.StartNew(() =>
+                            {
+                                var json = JsonConvert.SerializeObject(cachedUsing, _jsonSettings);
+                                File.WriteAllText(useFileName, json);
+                            });
+                        }
+                    }
                 }
-            }
 
-            _isLoadingCachedAssemblies = false;
+                LoadingSymbolsCompleted?.Invoke(null, new EventArgs());
+            }
         }
 
+        //public static void LoadCachedAssemblies(List<Assembly> assemblies, List<String> usings = null)
+        //{
+        //    if (_isLoadingCachedAssemblies) return;
+
+        //    _isLoadingCachedAssemblies = true;
+
+        //    LoadingSymbolsStarted?.Invoke(null, new EventArgs());
+
+        //    if (!_isCacheAssembliesLoaded)
+        //    {
+        //        foreach (var file in System.IO.Directory.GetFiles(KNOWN_TYPES_CACHE_FOLDER))
+        //        {
+        //            try
+        //            {
+        //                LoadingSymbolsProgress?.Invoke(null, new TangoProgressChangedEventArgs<int>()
+        //                {
+        //                    Progress = new TangoProgress<int>()
+        //                    {
+        //                        IsIndeterminate = true,
+        //                        Maximum = 100,
+        //                        Message = $"Loading metadata cache for '{System.IO.Path.GetFileName(file)}'..."
+        //                    }
+        //                });
+
+        //                var cachedAssembly = JsonConvert.DeserializeObject<CachedAssembly>(System.IO.File.ReadAllText(file), _jsonSettings);
+
+        //                foreach (var knownType in cachedAssembly.KnownTypes)
+        //                {
+        //                    _knownTypesCache.Add(knownType.Type, knownType);
+        //                }
+
+        //                _cachedAssemblies.Add(cachedAssembly);
+        //            }
+        //            catch { }
+        //        }
+
+        //        _isCacheAssembliesLoaded = true;
+        //    }
+
+        //    foreach (var asm in assemblies)
+        //    {
+        //        if (!_cachedAssemblies.Exists(x => x.Name == asm.FullName))
+        //        {
+        //            String asmFileName = System.IO.Path.GetFileName(asm.Location);
+
+        //            CachedAssembly cachedAssembly = new CachedAssembly();
+        //            cachedAssembly.Name = asm.FullName;
+        //            _cachedAssemblies.Add(cachedAssembly);
+
+        //            var types = asm.GetTypes().Where(x => x.IsVisible && x.IsPublic).ToList();
+
+        //            int i = 0;
+
+        //            foreach (var type in types)
+        //            {
+        //                LoadingSymbolsProgress?.Invoke(null, new TangoProgressChangedEventArgs<int>()
+        //                {
+        //                    Progress = new TangoProgress<int>()
+        //                    {
+        //                        IsIndeterminate = false,
+        //                        Maximum = types.Count,
+        //                        Value = i++,
+        //                        Message = $"Caching metadata for '{asmFileName}'..."
+        //                    }
+        //                });
+
+        //                KnownType knownType = new KnownType(type);
+
+        //                if (type.IsPrimitive)
+        //                {
+        //                    if (type == typeof(Int32))
+        //                    {
+        //                        knownType.Alias = "int";
+        //                    }
+        //                    else if (type == typeof(float))
+        //                    {
+        //                        knownType.Alias = "float";
+        //                    }
+        //                    else if (type == typeof(Double))
+        //                    {
+        //                        knownType.Alias = "double";
+        //                    }
+        //                    else if (type == typeof(long))
+        //                    {
+        //                        knownType.Alias = "long";
+        //                    }
+        //                    else if (type == typeof(bool))
+        //                    {
+        //                        knownType.Alias = "bool";
+        //                    }
+        //                    else if (type == typeof(uint))
+        //                    {
+        //                        knownType.Alias = "uint";
+        //                    }
+        //                }
+
+        //                _knownTypesCache.Add(type, knownType);
+        //                cachedAssembly.KnownTypes.Add(knownType);
+        //                //knownType.LoadDocumentation();
+        //            }
+
+        //            String cachedAssemblyFile = System.IO.Path.Combine(KNOWN_TYPES_CACHE_FOLDER, asmFileName);
+        //            File.WriteAllText(cachedAssemblyFile, JsonConvert.SerializeObject(cachedAssembly, _jsonSettings));
+        //        }
+        //    }
+
+        //    LoadingSymbolsCompleted?.Invoke(null, new EventArgs());
+
+        //    _isLoadingCachedAssemblies = false;
+        //}
+
         private void InvalidateHighlighting(bool loadKnownTypes = true)
         {
             if (!_isLoadingTypes)
@@ -1339,22 +1512,19 @@ namespace Tango.Scripting.Editors
 
                 Thread t = new Thread(() =>
                 {
-                    LoadCachedAssemblies(assemblies);
+                    LoadUsingsSymbols(assemblies, usings);
 
                     if (loadKnownTypes)
                     {
                         _knownTypes.Clear();
 
-                        foreach (var asm in assemblies)
+                        foreach (var knownType in _knownTypesCache.ToList().Select(x => x.Value).ToList())
                         {
-                            foreach (var knownType in _knownTypesCache.ToList().Select(x => x.Value).ToList())
+                            if (usings.Exists(x => knownType.Type.Namespace == x))
                             {
-                                if (usings.Exists(x => knownType.Type.Namespace == x))
+                                lock (_knownTypes)
                                 {
-                                    lock (_knownTypes)
-                                    {
-                                        _knownTypes.Add(knownType);
-                                    }
+                                    _knownTypes.Add(knownType);
                                 }
                             }
                         }
@@ -1589,7 +1759,11 @@ namespace Tango.Scripting.Editors
 
         private ConstructionSession GetConstructionSession()
         {
-            var expression = _parser.GetCurrentConstructionExpression(GetCurrentLineText());
+            var currentLine = GetCurrentLineText();
+
+            //if (currentLine.Count(x => x == '(') > 1) return null;
+
+            var expression = _parser.GetCurrentConstructionExpression(currentLine);
 
             if (expression != null)
             {
@@ -1693,7 +1867,14 @@ namespace Tango.Scripting.Editors
 
         private MethodSession GetMethodSession()
         {
-            var words = GetCurrentLineText().Split(' ');
+            var currentLine = GetCurrentLineText();
+
+            if (currentLine.Count(x => x == '(') > 1)
+            {
+                currentLine = currentLine.Split('(')[currentLine.Split('(').Length - 2];
+            }
+
+            var words = currentLine.Split(' ');
 
             if (words.Count() > 0 && (words.First() == "private" || words.First() == "public" || words.First() == "void"))
             {
@@ -1811,14 +1992,21 @@ namespace Tango.Scripting.Editors
 
         private DeclaredMethodSession GetDeclaredMethodSession()
         {
-            var words = GetCurrentLineText().Split(' ');
+            var currentLine = GetCurrentLineText();
+
+            if (currentLine.Count(x => x == '(') > 1)
+            {
+                currentLine = currentLine.Split('(')[currentLine.Split('(').Length - 2];
+            }
+
+            var words = currentLine.Split(' ');
 
             if (words.Count() > 0 && (words.First() == "private" || words.First() == "public" || words.First() == "void"))
             {
                 return null;
             }
 
-            var expression = GetPreviousWords().LastOrDefault();
+            var expression = currentLine;
 
             if (expression != null)
             {
@@ -1833,7 +2021,7 @@ namespace Tango.Scripting.Editors
 
                     if (variable != null)
                     {
-                        var declaredType = _declaredTypes.FirstOrDefault(x => x.Name == Regex.Replace(variable.Class, "<.+>", "<T>"));
+                        var declaredType = _declaredTypes.FirstOrDefault(x => x.Name == Regex.Replace(variable.Type, "<.+>", "<T>"));
 
                         if (declaredType != null)
                         {
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 d6c89f0a4..cabacbc28 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
@@ -181,6 +181,7 @@
     </Compile>
     <Compile Include="AvalonEditCommands.cs" />
     <Compile Include="CachedAssembly.cs" />
+    <Compile Include="CachedUsing.cs" />
     <Compile Include="CodeCompletion\CompletionListBox.cs" />
     <Compile Include="CodeCompletion\CompletionListBoxItem.cs" />
     <Compile Include="CodeCompletion\CompletionWindowBase.cs" />
@@ -201,6 +202,7 @@
     <Compile Include="Intellisense\CompletionItemPopupControl.cs" />
     <Compile Include="Intellisense\EnumCompletionItem.cs" />
     <Compile Include="Intellisense\EnumCompletionItemPopup.cs" />
+    <Compile Include="Intellisense\EventCompletionItem.cs" />
     <Compile Include="Intellisense\FieldCompletionItem.cs" />
     <Compile Include="Intellisense\FieldCompletionItemPopup.cs" />
     <Compile Include="Intellisense\ICompletionItem.cs" />
@@ -340,6 +342,7 @@
     <Compile Include="Indentation\DefaultIndentationStrategy.cs" />
     <Compile Include="Indentation\IIndentationStrategy.cs" />
     <Compile Include="Intellisense\KnownTypeConstructor.cs" />
+    <Compile Include="Intellisense\KnownTypeEvent.cs" />
     <Compile Include="Intellisense\KnownTypeField.cs" />
     <Compile Include="Intellisense\KnownTypeMember.cs" />
     <Compile Include="Intellisense\KnownTypeMethodParameter.cs" />
@@ -634,9 +637,12 @@
     <Analyzer Include="..\..\packages\Microsoft.CodeAnalysis.Analyzers.1.1.0\analyzers\dotnet\cs\Microsoft.CodeAnalysis.Analyzers.dll" />
     <Analyzer Include="..\..\packages\Microsoft.CodeAnalysis.Analyzers.1.1.0\analyzers\dotnet\cs\Microsoft.CodeAnalysis.CSharp.Analyzers.dll" />
   </ItemGroup>
+  <ItemGroup>
+    <Resource Include="Images\event.png" />
+  </ItemGroup>
   <ProjectExtensions>
     <VisualStudio>
-      <UserProperties BuildVersion_StartDate="2000/1/1" BuildVersion_BuildVersioningStyle="None.None.Increment.TimeStamp" BuildVersion_UpdateAssemblyVersion="True" BuildVersion_AssemblyInfoFilename="Properties\AssemblyInfo.cs" BuildVersion_UseGlobalSettings="True" />
+      <UserProperties BuildVersion_UseGlobalSettings="True" BuildVersion_AssemblyInfoFilename="Properties\AssemblyInfo.cs" BuildVersion_UpdateAssemblyVersion="True" BuildVersion_BuildVersioningStyle="None.None.Increment.TimeStamp" BuildVersion_StartDate="2000/1/1" />
     </VisualStudio>
   </ProjectExtensions>
 </Project>
\ No newline at end of file
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Themes/Generic.xaml b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Themes/Generic.xaml
index ce5cb39e1..6455b8fcb 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Themes/Generic.xaml
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Themes/Generic.xaml
@@ -47,6 +47,7 @@
     <BitmapImage x:Key="namespace" UriSource="pack://application:,,,/Tango.Scripting.Editors;component/Images/namespace.png" />
     <BitmapImage x:Key="method" UriSource="pack://application:,,,/Tango.Scripting.Editors;component/Images/method.png" />
     <BitmapImage x:Key="property" UriSource="pack://application:,,,/Tango.Scripting.Editors;component/Images/property.png" />
+    <BitmapImage x:Key="event" UriSource="pack://application:,,,/Tango.Scripting.Editors;component/Images/event.png" />
 
     <!--Converters-->
     <converters:BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
@@ -567,4 +568,6 @@
             </Setter.Value>
         </Setter>
     </Style>
+    
+    
 </ResourceDictionary>
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Test/MainWindow.xaml.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Test/MainWindow.xaml.cs
index 07958493d..58a695c10 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Test/MainWindow.xaml.cs
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Test/MainWindow.xaml.cs
@@ -25,14 +25,7 @@ namespace Tango.Scripting.Test
     {
         public MainWindow()
         {
-            ScriptEditor.AssemblyCacheProgress += ScriptEditor_AssemblyCacheProgress;
-            ScriptEditor.LoadCachedAssemblies(new List<System.Reflection.Assembly>()
-            {
-                typeof(String).Assembly,
-                typeof(Enumerable).Assembly,
-                typeof(Form).Assembly,
-                typeof(System.Drawing.Point).Assembly
-            });
+            ScriptEditor.LoadingSymbolsProgress += ScriptEditor_AssemblyCacheProgress;
 
             InitializeComponent();
             DataContext = new MainWindowVM();
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Test/MainWindowVM.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Test/MainWindowVM.cs
index 203196fda..f57de886f 100644
--- a/Software/Visual_Studio/Scripting/Tango.Scripting.Test/MainWindowVM.cs
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Test/MainWindowVM.cs
@@ -12,13 +12,19 @@ using Tango.SharedUI;
 
 namespace Tango.Scripting.Test
 {
+    public class TestContext : IContext
+    {
+
+    }
+
     public class MainWindowVM : ViewModel
     {
+
         public RelayCommand AddScriptCommand { get; set; }
         public RelayCommand RunCommand { get; set; }
 
-        private Project _project;
-        public Project Project
+        private Project<TestContext> _project;
+        public Project<TestContext> Project
         {
             get { return _project; }
             set { _project = value; RaisePropertyChangedAuto(); }
@@ -26,7 +32,8 @@ namespace Tango.Scripting.Test
 
         public MainWindowVM()
         {
-            Project = Project.New("untitled", Encoding.Default.GetString(Properties.Resources.template));
+            Project = Project<TestContext>.New("untitled");
+            Project.Scripts.Add(Script.New("main.csx", Encoding.Default.GetString(Properties.Resources.template), true));
             AddScriptCommand = new RelayCommand(AddScriptFile);
             RunCommand = new RelayCommand(RunProject);
         }
-- 
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