protected override object Convert(string fullText, object parameter, CultureInfo culture)
{
char ch1 = Accelerator.AccessKeySpecifierFromObject(parameter);
var span = new Span();
while (!string.IsNullOrEmpty(fullText))
{
int length = fullText.IndexOf(ch1);
if (length == -1)
{
span.Inlines.Add(new Run(fullText));
fullText = string.Empty;
}
else
{
if (length > 0)
{
span.Inlines.Add(new Run(fullText.Substring(0, length)));
}
if (length < fullText.Length - 1)
{
char ch2 = fullText[length + 1];
Run run = new Run(ch2.ToString());
if (ch2 == ch1)
{
span.Inlines.Add(run);
}
else
{
span.Inlines.Add(new Underline(run));
}
fullText = fullText.Substring(length + 2);
}
else
{
fullText = string.Empty;
}
}
}
return(span);
}