<?php

class Qs_Validate_StringLength extends Zend_Validate_StringLength
{
    protected $_elementLabel;
    protected $_actualLength;

    public function __construct($options = array())
    {
        $this->setMessage(
            "'%elementLabel%' is less than %min% characters long. (%actualLength% character(s) entered)",
            self::TOO_SHORT
        );
        $this->setMessage(
            "'%elementLabel%' is more than %max% characters long. (%actualLength% characters entered)",
            self::TOO_LONG
        );

        $this->_messageVariables['elementLabel'] = '_elementLabel';
        $this->_messageVariables['actualLength'] = '_actualLength';

        if (array_key_exists('elementLabel', $options)) {
            $this->setElementLabel($options['elementLabel']);
            unset($options['elementLabel']);
        } else {
            $this->setElementLabel('NOT DEFINED');
        }

        parent::__construct($options);
    }

    public function setElementLabel($label)
    {
        $this->_elementLabel = $label;
        return $this;
    }

    public function getElementLabel()
    {
        return $this->_elementLabel;
    }

    public function isValid($value)
    {
        if (!is_string($value)) {
            $this->_error(self::INVALID);
            return false;
        }

        if (null !== $this->_encoding) {
            $this->_actualLength = iconv_strlen($value, $this->_encoding);
        } else {
            $this->_actualLength = iconv_strlen($value);
        }

        return parent::isValid($value);
    }
}