protected override bool AllowTextChange(string currentText, NSRange changedRange, string replacementText, string result)
{
if (result.Length == 0)
{
return(true);
}
// If the user backspaced, allow the change to go through.
if (replacementText.Length == 0)
{
if (autocompleted)
{
// If we've auto-completed and the user backspaces, then he/she is probably entering a name we haven't seen before.
backspaced = true;
}
return(true);
}
for (int i = 0; i < replacementText.Length; i++)
{
if (replacementText[i] == '%' || replacementText[i] == '*')
{
return(false);
}
}
if (AutoComplete && result.Length > 0 && !backspaced)
{
// Try to auto-complete the safety pilot from the list of known safety pilots matching the provided text
var matches = LogBook.GetMatchingSafetyPilots(result);
if (matches != null)
{
// If we've only got 1 match, auto-complete for the user.
if (matches.Count == 1)
{
autocompleted = true;
Value = matches[0];
return(false);
}
// Figure out the maximum amount of matching text so that we can complete up to that far...
int maxLength = matches[0].Length;
for (int i = 1; i < matches.Count; i++)
{
int n;
for (n = 0; n < Math.Min(matches[i].Length, maxLength); n++)
{
if (matches[0][n] != matches[i][n])
{
break;
}
}
if (n < maxLength)
{
maxLength = n;
}
}
Value = matches[0].Substring(0, maxLength);
autocompleted = true;
return(false);
}
}
return(base.AllowTextChange(currentText, changedRange, replacementText, result));
}