public override bool DeletePrevious()
{
SnapshotSpan previousElementSpan = GetPreviousTextElementSpan();
if ((previousElementSpan.Length > 0) &&
(_textView.AdvancedTextView.TextViewModel.IsPointInVisualBuffer(AdvancedTextPoint, PositionAffinity.Successor)) &&
(!_textView.AdvancedTextView.TextViewModel.IsPointInVisualBuffer(previousElementSpan.End - 1, PositionAffinity.Successor)))
{
// Since the previous character is not visible but the current one is, delete
// the entire previous text element span.
return(PrimitivesUtilities.Delete(previousElementSpan));
}
else
{
// Delegate to the buffer point's DeletePrevious implementation to handle deleting single
// characters. A single character should be deleted if this point and the previous one
// are both visible or both not visible.
return(_bufferPoint.DeletePrevious());
}
}
