void ITextWatcher.BeforeTextChanged(ICharSequence s, int start, int count, int after)
{
if (Mask != null)
{
if (!_editingBefore)
{
_editingBefore = true;
if (start > _lastValidMaskPosition)
{
_ignore = true;
}
int rangeStart = start;
if (after == 0)
{
rangeStart = ErasingStart(start);
}
Range range = calculateRange(rangeStart, start + count);
if (range.Start != -1)
{
_rawText.SubtractFromString(range);
}
if (count > 0)
{
_selection = PreviousValidPosition(start);
}
}
}
}
public void BeforeTextChanged(Java.Lang.ICharSequence s, int start, int count, int after)
{
if (string.IsNullOrEmpty(mask))
{
return;
}
if (!editingBefore)
{
editingBefore = true;
ignore |= start > lastValidMaskPosition;
int rangeStart = start;
if (after == 0)
{
rangeStart = erasingStart(start);
}
var range = calculateRange(rangeStart, start + count);
if (range.Start != -1)
{
rawText.SubtractFromString(range);
}
if (count > 0)
{
selection = previousValidPosition(start);
}
}
}
