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);
}
public override bool TransposeCharacter()
{
int insertionIndex = CurrentPosition;
ITextSnapshotLine line = _textBuffer.AdvancedTextBuffer.CurrentSnapshot.GetLineFromPosition(insertionIndex);
string lineText = line.GetText();
if (StringInfo.ParseCombiningCharacters(lineText).Length < 2)
{
return(true);
}
Span textElementLeftSpan, textElementRightSpan;
string textElementLeft, textElementRight;
int linePosition = CurrentPosition - StartOfLine;
// We're at the start of a line
if (insertionIndex == line.Start)
{
textElementLeft = StringInfo.GetNextTextElement(lineText, linePosition);
textElementLeftSpan = new Span(linePosition + line.Start, textElementLeft.Length);
textElementRight = StringInfo.GetNextTextElement(lineText, linePosition + textElementLeft.Length);
textElementRightSpan = new Span(textElementLeftSpan.End, textElementRight.Length);
}
// We're at the end of a line
else if (insertionIndex == line.End)
{
textElementRight = StringInfo.GetNextTextElement(lineText, linePosition - 1);
textElementRightSpan = new Span(linePosition - 1 + line.Start, textElementRight.Length);
textElementLeft = StringInfo.GetNextTextElement(lineText, textElementRightSpan.Start - line.Start - 1);
textElementLeftSpan = new Span(textElementRightSpan.Start - 1, textElementRight.Length);
}
// We're at the middle of a line
else
{
textElementRight = StringInfo.GetNextTextElement(lineText, linePosition);
textElementRightSpan = new Span(linePosition + line.Start, textElementRight.Length);
textElementLeft = StringInfo.GetNextTextElement(lineText, textElementRightSpan.Start - line.Start - 1);
textElementLeftSpan = new Span(textElementRightSpan.Start - 1, textElementRight.Length);
}
string transposedText = textElementRight + textElementLeft;
return(PrimitivesUtilities.Replace(_textBuffer.AdvancedTextBuffer, new Span(textElementLeftSpan.Start, transposedText.Length), transposedText));
}
public override bool ReplaceText(string newText)
{
if (string.IsNullOrEmpty(newText))
{
throw new ArgumentNullException(nameof(newText));
}
int startPoint = _startPoint.CurrentPosition;
if (!PrimitivesUtilities.Replace(TextBuffer.AdvancedTextBuffer, Span.FromBounds(_startPoint.CurrentPosition, _endPoint.CurrentPosition), newText))
{
return(false);
}
_startPoint.MoveTo(startPoint);
return(true);
}
public override bool TransposeCharacter()
{
SnapshotPoint insertionPoint = AdvancedTextPoint;
ITextSnapshotLine line = _textView.AdvancedTextView.TextSnapshot.GetLineFromPosition(insertionPoint);
string lineText = line.GetText();
if (StringInfo.ParseCombiningCharacters(lineText).Length < 2)
{
return(true);
}
SnapshotSpan textElementLeftSpan, textElementRightSpan;
// We're at the start of a line
if (insertionPoint == line.Start)
{
textElementLeftSpan = TextView.AdvancedTextView.GetTextElementSpan(insertionPoint);
textElementRightSpan = TextView.AdvancedTextView.GetTextElementSpan(textElementLeftSpan.End);
}
// We're at the end of a line
else if (insertionPoint == line.End)
{
textElementRightSpan = TextView.AdvancedTextView.GetTextElementSpan(insertionPoint - 1);
textElementLeftSpan = TextView.AdvancedTextView.GetTextElementSpan(textElementRightSpan.Start - 1);
}
// We're at the middle of a line
else
{
textElementRightSpan = TextView.AdvancedTextView.GetTextElementSpan(insertionPoint);
textElementLeftSpan = TextView.AdvancedTextView.GetTextElementSpan(textElementRightSpan.Start - 1);
}
string transposedText = _textView.AdvancedTextView.TextSnapshot.GetText(textElementRightSpan)
+ _textView.AdvancedTextView.TextSnapshot.GetText(textElementLeftSpan);
return(PrimitivesUtilities.Replace(TextBuffer.AdvancedTextBuffer, new Span(textElementLeftSpan.Start, transposedText.Length), transposedText));
}
