public override bool Capitalize()
{
int startPosition = _startPoint.CurrentPosition;
if (IsEmpty)
{
int endPosition = _endPoint.CurrentPosition;
TextRange currentWord = _startPoint.GetCurrentWord();
string nextCharacter = _startPoint.GetNextCharacter();
if (_startPoint.CurrentPosition == currentWord.GetStartPoint().CurrentPosition)
{
nextCharacter = nextCharacter.ToUpper(CultureInfo.CurrentCulture);
}
else
{
nextCharacter = nextCharacter.ToLower(CultureInfo.CurrentCulture);
}
if (!PrimitivesUtilities.Replace(TextBuffer.AdvancedTextBuffer, new Span(_startPoint.CurrentPosition, nextCharacter.Length), nextCharacter))
{
return(false);
}
_endPoint.MoveTo(endPosition);
}
else
{
using (ITextEdit edit = TextBuffer.AdvancedTextBuffer.CreateEdit())
{
TextRange currentWord = _startPoint.GetCurrentWord();
// If the current word extends past this range, go to the next word
if (currentWord.GetStartPoint().CurrentPosition < _startPoint.CurrentPosition)
{
currentWord = currentWord.GetEndPoint().GetNextWord();
}
while (currentWord.GetStartPoint().CurrentPosition < _endPoint.CurrentPosition)
{
string wordText = currentWord.GetText();
string startElement = StringInfo.GetNextTextElement(wordText);
wordText = startElement.ToUpper(CultureInfo.CurrentCulture) + wordText.Substring(startElement.Length).ToLower(CultureInfo.CurrentCulture);
if (!edit.Replace(currentWord.AdvancedTextRange.Span, wordText))
{
edit.Cancel();
return(false);
}
currentWord = currentWord.GetEndPoint().GetNextWord();
}
edit.Apply();
if (edit.Canceled)
{
return(false);
}
}
}
_startPoint.MoveTo(startPosition);
return(true);
}
/// <summary>
/// Determine if this text point's current word is a blank line on the next line.
/// </summary>
/// <param name="currentWord">The current word to check.</param>
private bool IsCurrentWordABlankLine(TextExtent currentWord)
{
TextPoint endOfCurrentWord = Clone();
endOfCurrentWord.MoveTo(currentWord.Span.End);
return((EndOfLine == CurrentPosition) && (currentWord.Span.End == endOfCurrentWord.EndOfLine));
}
protected override IEnumerator <TextPoint> GetEnumeratorInternal()
{
for (int position = _startPoint.CurrentPosition; position <= _endPoint.CurrentPosition; position++)
{
TextPoint enumeratedPoint = _startPoint.Clone();
enumeratedPoint.MoveTo(position);
yield return(enumeratedPoint);
}
}
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 TextRange GetPreviousWord()
{
TextRange currentWord = GetCurrentWord();
if (currentWord.GetStartPoint().CurrentPosition > 0)
{
// By default, VS stops at line breaks when determing word
// boundaries.
if ((currentWord.GetStartPoint().CurrentPosition == StartOfLine) &&
(CurrentPosition != StartOfLine))
{
return(GetTextRange(currentWord.GetStartPoint()));
}
// If the point is at the end of a word that is not whitespace, it is possible
// that the "current word" is also the previous word in standard VS.
if ((currentWord.GetEndPoint().CurrentPosition == CurrentPosition) &&
(!currentWord.IsEmpty))
{
return(currentWord);
}
TextPoint pointInPreviousWord = currentWord.GetStartPoint();
pointInPreviousWord.MoveTo(pointInPreviousWord.CurrentPosition - 1);
TextRange previousWord = pointInPreviousWord.GetCurrentWord();
if (previousWord.GetStartPoint().CurrentPosition > 0)
{
if (ShouldContinuePastPreviousWord(previousWord))
{
pointInPreviousWord.MoveTo(previousWord.GetStartPoint().CurrentPosition - 1);
previousWord = pointInPreviousWord.GetCurrentWord();
}
}
return(previousWord);
}
return(_bufferPrimitivesFactory.CreateTextRange(_textBuffer, TextBuffer.GetStartPoint(), TextBuffer.GetStartPoint()));
}
public override TextRange GetTextRange(int otherPosition)
{
if ((otherPosition < 0) || (otherPosition > TextBuffer.AdvancedTextBuffer.CurrentSnapshot.Length))
{
throw new ArgumentOutOfRangeException(nameof(otherPosition));
}
TextPoint otherPoint = this.Clone();
otherPoint.MoveTo(otherPosition);
return(_bufferPrimitivesFactory.CreateTextRange(_textBuffer, this.Clone(), otherPoint));
}
public override TextRange GetCurrentWord()
{
// If the line is blank, just return a blank range for the line
SnapshotPoint currentPoint = AdvancedTextPoint;
ITextSnapshotLine line = currentPoint.GetContainingLine();
if (currentPoint == line.Start && line.Length == 0)
{
return(_bufferPrimitivesFactory.CreateTextRange(_textBuffer, this, this));
}
TextExtent textExtent = GetTextExtent(CurrentPosition);
// If the word is not significant, then see if there is a significant word right before this one,
// and return that instead to mimic VS 9 behavior.
if (!textExtent.IsSignificant)
{
if ((textExtent.Span.Start > 0) && (textExtent.Span.Length > 0))
{
if (textExtent.Span.Start == CurrentPosition)
{
if (!char.IsWhiteSpace(_textBuffer.AdvancedTextBuffer.CurrentSnapshot[textExtent.Span.Start - 1]))
{
textExtent = GetTextExtent(textExtent.Span.Start - 1);
}
}
else if (CurrentPosition == EndOfLine)
{
// If this text point is on the end of the line, then check to see if there is a word
// just before the whitespace.
if (!char.IsWhiteSpace(_textBuffer.AdvancedTextBuffer.CurrentSnapshot[textExtent.Span.Start - 1]))
{
TextExtent newExtent = new TextExtent(GetTextExtent(textExtent.Span.Start - 1));
textExtent = new TextExtent(new SnapshotSpan(newExtent.Span.Start, textExtent.Span.End), true);
}
}
}
}
TextPoint startPoint = Clone();
startPoint.MoveTo(textExtent.Span.Start);
TextPoint endPoint = Clone();
endPoint.MoveTo(textExtent.Span.End);
return(_bufferPrimitivesFactory.CreateTextRange(_textBuffer, startPoint, endPoint));
}
public override bool RemovePreviousIndent()
{
if (Column > 0)
{
int tabSize = _editorOptions.GetTabSize();
int previousTabStop = Column - tabSize;
if (Column % tabSize > 0)
{
previousTabStop = (Column / tabSize) * tabSize;
}
int positionToDeleteTo = CurrentPosition;
TextPoint newPoint = Clone();
for (int i = CurrentPosition - 1; newPoint.Column >= previousTabStop; i--)
{
newPoint.MoveTo(i);
string character = newPoint.GetNextCharacter();
if (!string.Equals(character, " ", StringComparison.Ordinal) && !string.Equals(character, "\t", StringComparison.Ordinal))
{
break;
}
positionToDeleteTo = i;
if (newPoint.Column == previousTabStop)
{
break;
}
}
return(PrimitivesUtilities.Delete(_textBuffer.AdvancedTextBuffer, Span.FromBounds(positionToDeleteTo, CurrentPosition)));
}
else
{
return(true);
}
}
public override void MoveTo(int position)
{
SnapshotPoint point = new SnapshotPoint(TextView.AdvancedTextView.TextSnapshot, position);
_bufferPoint.MoveTo(TextView.AdvancedTextView.GetTextElementSpan(point).Start);
}