public void Update(IDocument document, int offset)
        {
            var completionContext = new CSharpCompletionContext(document, offset, context.ProjectContent);

            if (completionContext == null)
            {
                RequestClose = true;
                return;
            }

            var completionFactory = new CSharpCompletionDataFactory(completionContext.TypeResolveContextAtCaret, completionContext);
            var pce = new CSharpParameterCompletionEngine(
                completionContext.Document,
                completionContext.CompletionContextProvider,
                completionFactory,
                completionContext.ProjectContent,
                completionContext.TypeResolveContextAtCaret
                );

            var completionChar = completionContext.Document.GetCharAt(completionContext.Offset);
            int parameterIndex = pce.GetCurrentParameterIndex(startOffset, completionContext.Offset);

            if (parameterIndex < 0)
            {
                RequestClose = true;
                return;
            }
            else
            {
                if (parameterIndex > items[selectedIndex].Method.Parameters.Count)
                {
                    var newItem = items.FirstOrDefault(i => parameterIndex <= i.Method.Parameters.Count);
                    SelectedIndex = items.IndexOf(newItem);
                }
                if (parameterIndex > 0)
                {
                    parameterIndex--; // NR returns 1-based parameter index
                }
                foreach (var item in items)
                {
                    item.HighlightParameter(parameterIndex);
                }
            }
        }
        public static CodeCompletionResult GetCompletions(IDocument document, int offset, bool controlSpace)
        {
            var result = new CodeCompletionResult();

            if (String.IsNullOrEmpty(document.FileName))
            {
                return(result);
            }

            var completionContext = new CSharpCompletionContext(document, offset, projectContent);

            var completionFactory = new CSharpCompletionDataFactory(completionContext.TypeResolveContextAtCaret, completionContext);
            var cce = new CSharpCompletionEngine(
                completionContext.Document,
                completionContext.CompletionContextProvider,
                completionFactory,
                completionContext.ProjectContent,
                completionContext.TypeResolveContextAtCaret
                );

            cce.EolMarker        = Environment.NewLine;
            cce.FormattingPolicy = FormattingOptionsFactory.CreateSharpDevelop();


            var completionChar = completionContext.Document.GetCharAt(completionContext.Offset - 1);
            int startPos, triggerWordLength;
            IEnumerable <ICSharpCode.NRefactory.Completion.ICompletionData> completionData;

            if (controlSpace)
            {
                if (!cce.TryGetCompletionWord(completionContext.Offset, out startPos, out triggerWordLength))
                {
                    startPos          = completionContext.Offset;
                    triggerWordLength = 0;
                }
                completionData = cce.GetCompletionData(startPos, true);
                if (triggerWordLength == 0)
                {
                    completionData = completionData.Concat(cce.GetImportCompletionData(startPos));
                }
            }
            else
            {
                startPos = completionContext.Offset;

                if (char.IsLetterOrDigit(completionChar) || completionChar == '_')
                {
                    if (startPos > 1 && char.IsLetterOrDigit(completionContext.Document.GetCharAt(startPos - 2)))
                    {
                        return(result);
                    }
                    completionData = cce.GetCompletionData(startPos, false);
                    startPos--;
                    triggerWordLength = 1;
                }
                else
                {
                    completionData    = cce.GetCompletionData(startPos, false);
                    triggerWordLength = 0;
                }
            }

            result.TriggerWordLength = triggerWordLength;
            result.TriggerWord       = completionContext.Document.GetText(completionContext.Offset - triggerWordLength, triggerWordLength);
            Debug.Print("Trigger word: '{0}'", result.TriggerWord);

            //cast to AvalonEdit completion data and add to results
            foreach (var completion in completionData)
            {
                var cshellCompletionData = completion as CompletionData;
                if (cshellCompletionData != null)
                {
                    cshellCompletionData.TriggerWord       = result.TriggerWord;
                    cshellCompletionData.TriggerWordLength = result.TriggerWordLength;
                    result.CompletionData.Add(cshellCompletionData);
                }
            }

            //method completions
            if (!controlSpace)
            {
                // Method Insight
                var pce = new CSharpParameterCompletionEngine(
                    completionContext.Document,
                    completionContext.CompletionContextProvider,
                    completionFactory,
                    completionContext.ProjectContent,
                    completionContext.TypeResolveContextAtCaret
                    );

                var parameterDataProvider = pce.GetParameterDataProvider(completionContext.Offset, completionChar);
                result.OverloadProvider = parameterDataProvider as IOverloadProvider;
            }

            return(result);
        }
        public static CodeCompletionResult GetCompletions(IDocument document, int offset, bool controlSpace)
        {
            var result = new CodeCompletionResult();

            if (String.IsNullOrEmpty(document.FileName))
                return result;

            var completionContext = new CSharpCompletionContext(document, offset, projectContent);

            var completionFactory = new CSharpCompletionDataFactory(completionContext.TypeResolveContextAtCaret, completionContext);
            var cce = new CSharpCompletionEngine(
                completionContext.Document,
                completionContext.CompletionContextProvider,
                completionFactory,
                completionContext.ProjectContent,
                completionContext.TypeResolveContextAtCaret
                );

            cce.EolMarker = Environment.NewLine;
            cce.FormattingPolicy = FormattingOptionsFactory.CreateSharpDevelop();

            var completionChar = completionContext.Document.GetCharAt(completionContext.Offset-1);
            int startPos, triggerWordLength;
            IEnumerable<ICSharpCode.NRefactory.Completion.ICompletionData> completionData;
            if (controlSpace)
            {
                if (!cce.TryGetCompletionWord(completionContext.Offset, out startPos, out triggerWordLength))
                {
                    startPos = completionContext.Offset;
                    triggerWordLength = 0;
                }
                completionData = cce.GetCompletionData(startPos, true);
                if (triggerWordLength == 0)
                    completionData = completionData.Concat(cce.GetImportCompletionData(startPos));
            }
            else
            {
                startPos = completionContext.Offset;

                if (char.IsLetterOrDigit(completionChar) || completionChar == '_')
                {
                    if (startPos > 1 && char.IsLetterOrDigit(completionContext.Document.GetCharAt(startPos - 2)))
                        return result;
                    completionData = cce.GetCompletionData(startPos, false);
                    startPos--;
                    triggerWordLength = 1;
                }
                else
                {
                    completionData = cce.GetCompletionData(startPos, false);
                    triggerWordLength = 0;
                }
            }

            result.TriggerWordLength = triggerWordLength;
            result.TriggerWord = completionContext.Document.GetText(completionContext.Offset - triggerWordLength, triggerWordLength);
            Debug.Print("Trigger word: '{0}'", result.TriggerWord);

            //cast to AvalonEdit completion data and add to results
            foreach (var completion in completionData)
            {
                var cshellCompletionData = completion as CompletionData;
                if (cshellCompletionData != null)
                {
                    cshellCompletionData.TriggerWord = result.TriggerWord;
                    cshellCompletionData.TriggerWordLength = result.TriggerWordLength;
                    result.CompletionData.Add(cshellCompletionData);
                }
            }

            //method completions
            if (!controlSpace)
            {
                // Method Insight
                var pce = new CSharpParameterCompletionEngine(
                    completionContext.Document,
                    completionContext.CompletionContextProvider,
                    completionFactory,
                    completionContext.ProjectContent,
                    completionContext.TypeResolveContextAtCaret
                );

                var parameterDataProvider = pce.GetParameterDataProvider(completionContext.Offset, completionChar);
                result.OverloadProvider = parameterDataProvider as IOverloadProvider;
            }

            return result;
        }
        public void Update(IDocument document, int offset)
        {
            var completionContext = new CSharpCompletionContext(document, offset, context.ProjectContent);
            if (completionContext == null)
            {
                RequestClose = true;
                return;
            }

            var completionFactory = new CSharpCompletionDataFactory(completionContext.TypeResolveContextAtCaret, completionContext);
            var pce = new CSharpParameterCompletionEngine(
                completionContext.Document,
                completionContext.CompletionContextProvider,
                completionFactory,
                completionContext.ProjectContent,
                completionContext.TypeResolveContextAtCaret
            );

            var completionChar = completionContext.Document.GetCharAt(completionContext.Offset);
            int parameterIndex = pce.GetCurrentParameterIndex(startOffset, completionContext.Offset);
            if (parameterIndex < 0)
            {
                RequestClose = true;
                return;
            }
            else
            {
                if (parameterIndex > items[selectedIndex].Method.Parameters.Count)
                {
                    var newItem = items.FirstOrDefault(i => parameterIndex <= i.Method.Parameters.Count);
                    SelectedIndex = items.IndexOf(newItem);
                }
                if (parameterIndex > 0)
                    parameterIndex--; // NR returns 1-based parameter index
                foreach (var item in items)
                {
                    item.HighlightParameter(parameterIndex);
                }
            }
        }