private ITrackingSpan FindTokenSpanAtPosition(ICompletionSession session)
{
SnapshotPoint currentPoint = session.TextView.Caret.Position.BufferPosition - 1;
TextExtent extent = _textStructureNavigator.GetExtentOfWord(currentPoint);
var prev = _textStructureNavigator.GetSpanOfPreviousSibling(extent.Span);
if (prev != null && !prev.Contains(extent.Span))
{
string text = prev.GetText();
if (!string.IsNullOrEmpty(text) && text.Last() != '%' && !char.IsLetter(text[0]))
{
return(null);
}
if (text.First() != '%' && CmdLanguage.Keywords.ContainsKey(text.ToLowerInvariant()))
{
text = text.ToLowerInvariant();
if (text != "if" && text != "not")
{
return(null);
}
}
}
return(currentPoint.Snapshot.CreateTrackingSpan(extent.Span, SpanTrackingMode.EdgeInclusive));
}
public void AugmentQuickInfoSession(IQuickInfoSession session, IList <object> qiContent, out ITrackingSpan applicableToSpan)
{
// Map the trigger point down to our buffer.
SnapshotPoint?subjectTriggerPoint = session.GetTriggerPoint(_mSubjectBuffer.CurrentSnapshot);
if (!subjectTriggerPoint.HasValue)
{
applicableToSpan = null;
return;
}
ITextSnapshot currentSnapshot = subjectTriggerPoint.Value.Snapshot;
//look for occurrences of our QuickInfo words in the span
ITextStructureNavigator navigator = _mProvider.NavigatorService.GetTextStructureNavigator(_mSubjectBuffer);
TextExtent extent = navigator.GetExtentOfWord(subjectTriggerPoint.Value);
if (extent.IsSignificant)
{
var tt1 = navigator.GetSpanOfNextSibling(extent.Span);
var tt2 = navigator.GetSpanOfFirstChild(extent.Span);
var tt3 = navigator.GetSpanOfPreviousSibling(extent.Span);
var tt4 = navigator.GetSpanOfEnclosing(extent.Span);
var t1 = tt1.GetText();
var t2 = tt2.GetText();
var t3 = tt3.GetText();
}
string searchText = extent.Span.GetText();
foreach (string key in _mDictionary.Keys)
{
int foundIndex = searchText.IndexOf(key, StringComparison.CurrentCultureIgnoreCase);
if (foundIndex > -1)
{
applicableToSpan = currentSnapshot.CreateTrackingSpan
(
//querySpan.Start.Add(foundIndex).Position, 9, SpanTrackingMode.EdgeInclusive
extent.Span.Start + foundIndex, key.Length, SpanTrackingMode.EdgeInclusive
);
string value;
_mDictionary.TryGetValue(key, out value);
qiContent.Add(value ?? "");
return;
}
}
applicableToSpan = null;
}
public static int?GetSubwordBoundary(this ITextStructureNavigator navigator, SnapshotPoint point, bool forward)
{
var wordSpan = navigator.GetExtentOfWord(point).Span;
wordSpan = new SnapshotSpan(navigator.GetSpanOfPreviousSibling(wordSpan).Start,
navigator.GetSpanOfNextSibling(wordSpan).End);
if (wordSpan.Length == 0)
{
return(null);
}
int step = forward ? 1 : -1;
SnapshotSpan wordSpanPrev;
do
{
var word = wordSpan.GetText();
int i = point.Position - wordSpan.Start;
while (0 < i && i < word.Length)
{
if (IsSubwordBoundary(word, i, forward))
{
return(wordSpan.Start + i);
}
i += step;
}
point = wordSpan.Start + i;
wordSpanPrev = wordSpan;
wordSpan = navigator.GetSpanOfEnclosing(wordSpan);
} while (wordSpan != wordSpanPrev);
return(null);
}
public SnapshotSpan GetSpanOfPreviousSibling(SnapshotSpan activeSpan)
{
return(_delegateNavigator.GetSpanOfPreviousSibling(activeSpan));
}
public SnapshotSpan GetSpanOfPreviousSibling(SnapshotSpan activeSpan)
{
return(_plainTextNavigator.GetSpanOfPreviousSibling(activeSpan));
}
public SnapshotSpan GetSpanOfPreviousSibling(SnapshotSpan activeSpan) => xmlNavigator.GetSpanOfPreviousSibling(activeSpan);
void IQuickInfoSource.AugmentQuickInfoSession(IQuickInfoSession session, IList <object> quickInfoContent, out ITrackingSpan applicableToSpan)
{
// Map the trigger point down to our buffer.
SnapshotPoint?subjectTriggerPoint = session.GetTriggerPoint(m_subjectBuffer.CurrentSnapshot);
if (!subjectTriggerPoint.HasValue)
{
applicableToSpan = null;
return;
}
ITextSnapshot currentSnapshot = subjectTriggerPoint.Value.Snapshot;
SnapshotSpan querySpan = new SnapshotSpan(subjectTriggerPoint.Value, 0);
//look for occurrences of our QuickInfo words in the span
ITextStructureNavigator navigator = m_provider.NavigatorService.GetTextStructureNavigator(m_subjectBuffer);
TextExtent extent = navigator.GetExtentOfWord(subjectTriggerPoint.Value);
string searchText = extent.Span.GetText();
if (searchText.Length < 2)//一般都是一个符号
{
applicableToSpan = null;
return;
}
SnapshotSpan ssPrevious = navigator.GetSpanOfPreviousSibling(extent.Span);
SnapshotSpan ssEnclosing = navigator.GetSpanOfEnclosing(extent.Span);
string strPreText = ssPrevious.GetText();
string strEnclosing = ssEnclosing.GetText();
string desText, strCtrlName;
if (strPreText == "<" || strPreText == "</" || strEnclosing.StartsWith("</"))//控件名
{
SouiData.GetInstance().GetKeyInf(searchText, out desText, currentSnapshot, out applicableToSpan, querySpan);
if (desText != null)
{
quickInfoContent.Add(desText);
}
else
{
applicableToSpan = null;
}
return;
}
else if (strPreText == "=\"")//属性值
{
applicableToSpan = null;
return;
}
//属性名
else if (strEnclosing.StartsWith("<"))
{
strCtrlName = navigator.GetExtentOfWord(ssEnclosing.Start + 1).Span.GetText();
if (strCtrlName == null || strCtrlName.Length == 0)
{
applicableToSpan = null;
return;
}
SouiData.GetInstance().GetProInf(strCtrlName, searchText, out desText, currentSnapshot, out applicableToSpan, querySpan);
if (desText != null)
{
quickInfoContent.Add(desText);
return;
}
}
else if (strPreText.StartsWith("<"))
{
strCtrlName = navigator.GetExtentOfWord(ssPrevious.Start + 1).Span.GetText();
if (strCtrlName == null || strCtrlName.Length == 0)
{
applicableToSpan = null;
return;
}
SouiData.GetInstance().GetProInf(strCtrlName, searchText, out desText, currentSnapshot, out applicableToSpan, querySpan);
if (desText != null)
{
quickInfoContent.Add(desText);
return;
}
}
strCtrlName = strPreText;
while (ssPrevious.Start > 0)
{
if (strPreText == "<")
{
SouiData.GetInstance().GetProInf(strCtrlName, searchText, out desText, currentSnapshot, out applicableToSpan, querySpan);
if (desText != null)
{
quickInfoContent.Add(desText);
return;
}
break;
}
strCtrlName = strPreText;
ssPrevious = navigator.GetExtentOfWord(ssPrevious.Start - 1).Span;
strPreText = ssPrevious.GetText();
}
applicableToSpan = null;
}