private void TextBox_arabic_KeyUp(object sender, KeyEventArgs e)
{
if (NumeralConverter.IsValidArabicValue(textBox_arabic.Text))
{
textBox_roman.Text = NumeralConverter.ArabicToRoman(textBox_arabic.Text);
}
else
{
var insertionPoint = textBox_arabic.SelectionStart - 1;
textBox_arabic.Text = NumeralConverter.Arabic;
PlayErrorSound();
if (insertionPoint > textBox_arabic.Text.Length)
{
insertionPoint = textBox_arabic.Text.Length;
}
textBox_arabic.SelectionStart = insertionPoint;
}
}
private void TextBox_roman_KeyUp(object sender, KeyEventArgs e)
{
var insertionPoint = textBox_roman.SelectionStart;
var currentLength = textBox_roman.Text.Length;
if (NumeralConverter.IsValidRomanValue(textBox_roman.Text, checkBox_strictMode.Checked))
{
textBox_arabic.Text = NumeralConverter.RomanToArabic(textBox_roman.Text);
if (!checkBox_strictMode.Checked)
{
textBox_roman.Text = NumeralConverter.Roman;
}
var newInsertionPoint = insertionPoint - (textBox_roman.Text.Length - currentLength);
if (!checkBox_strictMode.Checked)
{
newInsertionPoint--;
}
if (newInsertionPoint < 0)
{
newInsertionPoint += insertionPoint;
}
textBox_roman.SelectionStart = insertionPoint;
}
else
{
textBox_roman.Text = NumeralConverter.Roman;
PlayErrorSound();
var newInsertionPoint = insertionPoint - (textBox_roman.Text.Length - currentLength) - 2;
if (newInsertionPoint < 0)
{
newInsertionPoint += insertionPoint;
}
if (newInsertionPoint > textBox_roman.Text.Length)
{
newInsertionPoint = textBox_roman.Text.Length;
}
textBox_roman.SelectionStart = newInsertionPoint;
}
}