def validatePrice_error_(self, value, error):
if value >= 0:
return True, value, None
errorString = "Price cannot be negative"
userInfoDict = {NSLocalizedDescriptionKey: errorString}
error = NSError.alloc().initWithDomain_code_userInfo_(
ITEM_ERROR_DOMAIN, ITEM_NEGATIVE_PRICE, userInfoDict
)
return False, value, error
def validateMaxOffset_error_(self, ioValue, error):
if ioValue is None:
# trap this in setNilValueForKey
# alternative might be to create new NSNumber with value 0 here
return True
if ioValue <= 0.0:
errorString = NSLocalizedStringFromTable(
"Maximum Offset must be greater than zero",
"Joystick",
"validation: zero maxOffset error",
)
userInfoDict = {NSLocalizedDescriptionKey: errorString}
error = NSError.alloc().initWithDomain_code_userInfo_(
"JoystickView", 1, userInfoDict)
return False, error
return True, None