/**
* Validates a color value. According to the W3C this field should ALWAYS have a value.
*
* @param string $value The value to validate.
*
* @return bool|string Returns boolean TRUE upon successfull validation, and an error message string upon failure.
*/
public function validate(&$value)
{
$return = parent::validate($value);
if ($return !== true) {
return $return;
}
if (!isset($value) || strlen(trim($value)) < 1) {
$value = '#000000';
}
if (isset($value) && strlen(trim($value)) > 0) {
$valid = is::color($value);
if ($valid === false) {
$msglbl = get::array_def($this->attributes, 'msglbl', get::array_def($this->attributes, 'name', $this->getId()));
return sprintf('"%s" has an invalid color (ex. #FFFFFF).', $msglbl);
}
$value = $valid;
}
return true;
}
