private void MovePrevious(bool extendSelection)
{
if (!extendSelection && !textView.Selection.IsEmpty)
{
textView.Selection.Select(textView.Selection.ActivePoint, textView.Selection.ActivePoint);
}
var caret = textView.Caret;
if (caret.InVirtualSpace)
{
operations.MoveToEndOfLine(extendSelection);
return;
}
var point = caret.Position.BufferPosition;
if (point.Position == 0)
{
return;
}
if (point == caret.ContainingTextViewLine.Start)
{
operations.MoveLineUp(extendSelection);
operations.MoveToLastNonWhiteSpaceCharacter(extendSelection);
if (navigator.GetExtentOfWord(caret.Position.BufferPosition).IsSignificant)
{
operations.MoveToNextCharacter(extendSelection);
}
return;
}
var extent = navigator.GetExtentOfSubword(point - 1);
if (extent == null)
{
return;
}
for (int i = point; i > extent.Value.Span.Start; i--)
{
operations.MoveToPreviousCharacter(extendSelection);
}
}