//private bool isHelpContextSet = false;
public override void UpdateLanguageContext(LanguageContextHint hint, IVsTextLines buffer, TextSpan[] ptsSelection, Microsoft.VisualStudio.Shell.Interop.IVsUserContext context)
{
// WOULD HAVE BEEN NICE TO HAVE HELP, BUT SEEMS TO BE A LONG WAY TO CREATE AN HXS HELP FILE
//if (isHelpContextSet)
//{
// context.RemoveAttribute("keyword", "mov");
// isHelpContextSet = false;
//}
//else
//{
// context.AddAttribute(VSUSERCONTEXTATTRIBUTEUSAGE.VSUC_Usage_LookupF1, "keyword", "mov");
// isHelpContextSet = true;
//}
}
// Help for functions and keywords. Initiated by pressing F1.
public override void UpdateLanguageContext(LanguageContextHint hint, IVsTextLines buffer, TextSpan[] ptsSelection, IVsUserContext context)
{
string searchingKeyword = null;
// Search keyword as the function that presented where cursor stays or just before it
Source source = (Source)this.GetSource(buffer);
Debug.Assert(ptsSelection.Length > 0);
int line = ptsSelection[0].iStartLine;
int endPosition = ptsSelection[0].iEndIndex;
var colorState = new DaxEditor.DaxFormatter.DummyColorState();
TokenInfo[] lineInfos = source.GetColorizer().GetLineInfo(buffer, line, colorState);
foreach (var tokenInfo in lineInfos)
{
if (!(tokenInfo.Type == TokenType.Identifier || tokenInfo.Type == TokenType.Keyword))
{
continue;
}
var span = new TextSpan();
span.iStartLine = line;
span.iEndLine = line;
span.iStartIndex = tokenInfo.StartIndex;
span.iEndIndex = tokenInfo.EndIndex + 1;
searchingKeyword = source.GetText(span);
if (span.iEndIndex >= endPosition)
{
break;
}
}
if (!string.IsNullOrEmpty(searchingKeyword))
{
ErrorHandler.ThrowOnFailure(context.RemoveAttribute(null, null));
ErrorHandler.ThrowOnFailure(context.AddAttribute(VSUSERCONTEXTATTRIBUTEUSAGE.VSUC_Usage_Lookup, "keyword", "SQL11.AS.DAXREF." + searchingKeyword + ".F1"));
}
}
/// <include file='doc\LanguageService.uex' path='docs/doc[@for="LanguageService.UpdateLanguageContext"]/*' />
public virtual void UpdateLanguageContext(LanguageContextHint hint, IVsTextLines buffer, TextSpan[] ptsSelection, IVsUserContext context) {
}
internal virtual int UpdateLanguageContext(LanguageContextHint hint, IVsTextLines buffer, TextSpan[] ptsSelection, IVsUserContext context)
{
// From the docs: Any failure code: means the implementer is "passing" on this opportunity to provide context and the text editor will fall back to other mechanisms.
if (ptsSelection == null || ptsSelection.Length != 1) return NativeMethods.E_FAIL;
context.RemoveAttribute(null, null);
TextSpan span = ptsSelection[0];
IVsTextLines lastActiveBuffer;
IVsTextView lastAciveView = this.LastActiveTextView;
if (lastActiveView == null) return NativeMethods.E_FAIL;
NativeMethods.ThrowOnFailure(lastActiveView.GetBuffer(out lastActiveBuffer));
if (lastActiveBuffer != buffer) return NativeMethods.E_FAIL;
ISource source = GetSource(buffer);
if (source == null) return NativeMethods.E_FAIL;
var req = source.BeginBackgroundRequest(span.iStartLine, span.iStartIndex, new TokenInfo(), BackgroundRequestReason.FullTypeCheck, lastActiveView, RequireFreshResults.No, new BackgroundRequestResultHandler(this.HandleUpdateLanguageContextResponse));
if (req == null || req.Result == null) return NativeMethods.E_FAIL;
if ((req.IsSynchronous ||
((req.Result != null) && req.Result.TryWaitForBackgroundRequestCompletion(1000))))
{
if (req.IsAborted) return NativeMethods.E_FAIL;
if (req.ResultScope != null)
{
req.ResultScope.GetF1KeywordString(span, context);
return NativeMethods.S_OK;
}
}
else // result is asynchronous and have not completed within 1000 ms
{
context.AddAttribute(VSUSERCONTEXTATTRIBUTEUSAGE.VSUC_Usage_Filter, "devlang", "fsharp");
context.AddAttribute(VSUSERCONTEXTATTRIBUTEUSAGE.VSUC_Usage_LookupF1_CaseSensitive, "keyword", "fsharp.typechecking.incomplete");
return NativeMethods.S_OK;
}
return NativeMethods.E_FAIL;
}
//private bool isHelpContextSet = false;
public override void UpdateLanguageContext(LanguageContextHint hint, IVsTextLines buffer, TextSpan[] ptsSelection, Microsoft.VisualStudio.Shell.Interop.IVsUserContext context)
{
// WOULD HAVE BEEN NICE TO HAVE HELP, BUT SEEMS TO BE A LONG WAY TO CREATE AN HXS HELP FILE
//if (isHelpContextSet)
//{
// context.RemoveAttribute("keyword", "mov");
// isHelpContextSet = false;
//}
//else
//{
// context.AddAttribute(VSUSERCONTEXTATTRIBUTEUSAGE.VSUC_Usage_LookupF1, "keyword", "mov");
// isHelpContextSet = true;
//}
}
public virtual void UpdateLanguageContext(LanguageContextHint hint, IVsTextLines buffer, TextSpan[] ptsSelection, IVsUserContext context);
