public override TextRange GetNextWord()
{
TextExtent currentWord = GetTextExtent(CurrentPosition);
if (currentWord.Span.End < _textBuffer.AdvancedTextBuffer.CurrentSnapshot.Length)
{
// If the current point is at the end of the line, look for the next word on the next line
if ((CurrentPosition == EndOfLine) && (CurrentPosition != _textBuffer.AdvancedTextBuffer.CurrentSnapshot.Length))
{
TextPoint textPoint = Clone();
textPoint.MoveToBeginningOfNextLine();
textPoint.MoveTo(textPoint.StartOfLine);
TextExtent wordOnNextLine = GetTextExtent(textPoint.CurrentPosition);
if (wordOnNextLine.IsSignificant)
{
return(textPoint.GetCurrentWord());
}
else if (wordOnNextLine.Span.End >= textPoint.EndOfLine)
{
return(textPoint.GetTextRange(textPoint.EndOfLine));
}
return(textPoint.GetNextWord());
}
// By default, VS stops at line breaks when determing word
// boundaries.
else if (ShouldStopAtEndOfLine(currentWord.Span.End) || IsCurrentWordABlankLine(currentWord))
{
return(GetTextRange(currentWord.Span.End));
}
TextExtent nextWord = GetTextExtent(currentWord.Span.End);
if (!nextWord.IsSignificant)
{
nextWord = GetTextExtent(nextWord.Span.End);
}
int start = nextWord.Span.Start;
int end = nextWord.Span.End;
// The text structure navigator can return a word with whitespace attached at the end.
// Handle that case here.
start = Math.Max(start, currentWord.Span.End);
TextPoint startPoint = Clone();
TextPoint endPoint = Clone();
startPoint.MoveTo(start);
endPoint.MoveTo(end);
return(_bufferPrimitivesFactory.CreateTextRange(_textBuffer, startPoint, endPoint));
}
return(_bufferPrimitivesFactory.CreateTextRange(_textBuffer, TextBuffer.GetEndPoint(), TextBuffer.GetEndPoint()));
}
public override bool ToggleCase()
{
if (IsEmpty)
{
TextPoint nextPoint = _startPoint.Clone();
nextPoint.MoveToNextCharacter();
TextRange nextCharacter = _startPoint.GetTextRange(nextPoint);
string nextCharacterString = nextCharacter.GetText();
if (char.IsUpper(nextCharacterString, 0))
{
nextCharacterString = nextCharacterString.ToLower(CultureInfo.CurrentCulture);
}
else
{
nextCharacterString = nextCharacterString.ToUpper(CultureInfo.CurrentCulture);
}
return(nextCharacter.ReplaceText(nextCharacterString));
}
else
{
int startPosition = _startPoint.CurrentPosition;
using (ITextEdit textEdit = TextBuffer.AdvancedTextBuffer.CreateEdit())
{
for (int i = _startPoint.CurrentPosition; i < _endPoint.CurrentPosition; i++)
{
char newChar = textEdit.Snapshot[i];
if (char.IsUpper(newChar))
{
newChar = char.ToLower(newChar, CultureInfo.CurrentCulture);
}
else
{
newChar = char.ToUpper(newChar, CultureInfo.CurrentCulture);
}
if (!textEdit.Replace(i, 1, newChar.ToString(CultureInfo.CurrentCulture)))
{
textEdit.Cancel();
return(false); // break out early if any edit fails to reduce the time of the failure case
}
}
textEdit.Apply();
if (textEdit.Canceled)
{
return(false);
}
}
_startPoint.MoveTo(startPosition);
}
return(true);
}
public override TextRange GetTextRange(TextPoint otherPoint)
{
return(_bufferPoint.GetTextRange(otherPoint));
}