public CodeCompletionResult GetCompletions(IDocument document, int offset, bool controlSpace, string usings, string variables, string @namespace)
{
var result = new CodeCompletionResult();
if (String.IsNullOrEmpty(document.FileName))
{
return(result);
}
var completionContext = new CSharpCompletionContext(document, offset, projectContent, usings, variables, @namespace);
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);
//this outputs tons of available entities
//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 BotTimeICSharpCode.CodeCompletion.DataItems.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);
}
private void ShowCompletion(string enteredText, bool controlSpace)
{
if (!controlSpace)
{
Debug.WriteLine("Code Completion: TextEntered: " + enteredText);
}
else
{
Debug.WriteLine("Code Completion: Ctrl+Space");
}
//only process csharp files and if there is a code completion engine available
if (String.IsNullOrEmpty(Document.FileName))
{
Debug.WriteLine("No document file name, cannot run code completion");
return;
}
if (Completion == null)
{
Debug.WriteLine("Code completion is null, cannot run code completion");
return;
}
var fileExtension = Path.GetExtension(Document.FileName);
fileExtension = fileExtension != null?fileExtension.ToLower() : null;
//check file extension to be a c# file (.cs, .csx, etc.)
if (fileExtension == null || (!fileExtension.StartsWith(".cs")))
{
Debug.WriteLine("Wrong file extension, cannot run code completion");
return;
}
if (completionWindow == null)
{
CodeCompletionResult results = null;
try
{
var offset = 0;
var doc = GetCompletionDocument(out offset);
results = Completion.GetCompletions(doc, offset, controlSpace);
}
catch (Exception exception)
{
Debug.WriteLine("Error in getting completion: " + exception);
}
if (results == null)
{
return;
}
if (insightWindow == null && results.OverloadProvider != null)
{
insightWindow = new OverloadInsightWindow(TextArea);
insightWindow.Provider = results.OverloadProvider;
insightWindow.Show();
insightWindow.Closed += (o, args) => insightWindow = null;
return;
}
if (completionWindow == null && results != null && results.CompletionData.Any())
{
// Open code completion after the user has pressed dot:
completionWindow = new CompletionWindow(TextArea);
completionWindow.CloseWhenCaretAtBeginning = controlSpace;
completionWindow.StartOffset -= results.TriggerWordLength;
//completionWindow.EndOffset -= results.TriggerWordLength;
IList <ICompletionData> data = completionWindow.CompletionList.CompletionData;
foreach (var completion in results.CompletionData.OrderBy(item => item.Text))
{
data.Add(completion);
}
if (results.TriggerWordLength > 0)
{
//completionWindow.CompletionList.IsFiltering = false;
completionWindow.CompletionList.SelectItem(results.TriggerWord);
}
completionWindow.Show();
completionWindow.Closed += (o, args) => completionWindow = null;
}
}//end if
//update the insight window
if (!string.IsNullOrEmpty(enteredText) && insightWindow != null)
{
//whenver text is entered update the provider
var provider = insightWindow.Provider as CSharpOverloadProvider;
if (provider != null)
{
//since the text has not been added yet we need to tread it as if the char has already been inserted
var offset = 0;
var doc = GetCompletionDocument(out offset);
provider.Update(doc, offset);
//if the windows is requested to be closed we do it here
if (provider.RequestClose)
{
insightWindow.Close();
insightWindow = null;
}
}
}
}//end method
