| public RemoveAt ( int startPosition, int endPosition, int &testPosition, MaskedTextResultHint &resultHint ) : bool | ||
| startPosition | int | |
| endPosition | int | |
| testPosition | int | |
| resultHint | MaskedTextResultHint | |
| Результат | bool | |
public bool RemoveAt(int startPosition, int endPosition, out int testPosition, out MaskedTextResultHint resultHint)
{
if (endPosition >= _testString.Length)
{
testPosition = endPosition;
resultHint = MaskedTextResultHint.PositionOutOfRange;
return false;
//throw new ArgumentOutOfRangeException("endPosition");
}
if (startPosition < 0 || startPosition > endPosition)
{
testPosition = startPosition;
resultHint = MaskedTextResultHint.PositionOutOfRange;
return false;
//throw new ArgumentOutOfRangeException("startPosition");
}
return RemoveAtInt(startPosition, endPosition, out testPosition, out resultHint, /*testOnly*/ false);
}
private bool CanDelete( int startPosition, int selectionLength, bool deleteForward, MaskedTextProvider provider )
{
if( this.IsReadOnly )
return false;
if( selectionLength == 0 )
{
if( !deleteForward )
{
if( startPosition == 0 )
return false;
startPosition--;
}
else if( ( startPosition + selectionLength ) == provider.Length )
{
return false;
}
}
MaskedTextResultHint notUsed;
int tentativeCaretPosition = startPosition;
int endPosition = ( selectionLength > 0 ) ? ( ( startPosition + selectionLength ) - 1 ) : startPosition;
bool success = provider.RemoveAt( startPosition, endPosition, out tentativeCaretPosition, out notUsed );
return success;
}