<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_View

 * @subpackage Helper

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: FormElement.php 22290 2010-05-25 14:27:12Z matthew $

 */

/**

 * @see Zend_View_Helper_HtmlElement

 */

require_once 'Zend/View/Helper/HtmlElement.php';

/**

 * Base helper for form elements.  Extend this, don't use it on its own.

 *

 * @category   Zend

 * @package    Zend_View

 * @subpackage Helper

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

abstract class Zend_View_Helper_FormElement extends Zend_View_Helper_HtmlElement

{

    /**

     * @var Zend_Translate

     */

    protected $_translator;

    /**

     * Get translator

     *

     * @return Zend_Translate

     */

    public function getTranslator()

    {

         return $this->_translator;

    }

    /**

     * Set translator

     *

     * @param  $translator|null Zend_Translate

     * @return Zend_View_Helper_FormElement

     */

    public function setTranslator($translator = null)

    {

        if (null === $translator) {

            $this->_translator = null;

        } elseif ($translator instanceof Zend_Translate_Adapter) {

            $this->_translator = $translator;

        } elseif ($translator instanceof Zend_Translate) {

            $this->_translator = $translator->getAdapter();

        } else {

            require_once 'Zend/View/Exception.php';

            $e = new Zend_View_Exception('Invalid translator specified');

            $e->setView($this->view);

            throw $e;

        }

         return $this;

    }

    /**

     * Converts parameter arguments to an element info array.

     *

     * E.g, formExample($name, $value, $attribs, $options, $listsep) is

     * the same thing as formExample(array('name' => ...)).

     *

     * Note that you cannot pass a 'disable' param; you need to pass

     * it as an 'attribs' key.

     *

     * @access protected

     *

     * @return array An element info array with keys for name, value,

     * attribs, options, listsep, disable, and escape.

     */

    protected function _getInfo($name, $value = null, $attribs = null,

        $options = null, $listsep = null

    ) {

        // the baseline info.  note that $name serves a dual purpose;

        // if an array, it's an element info array that will override

        // these baseline values.  as such, ignore it for the 'name'

        // if it's an array.

        $info = array(

            'name'    => is_array($name) ? '' : $name,

            'id'      => is_array($name) ? '' : $name,

            'value'   => $value,

            'attribs' => $attribs,

            'options' => $options,

            'listsep' => $listsep,

            'disable' => false,

            'escape'  => true,

        );

        // override with named args

        if (is_array($name)) {

            // only set keys that are already in info

            foreach ($info as $key => $val) {

                if (isset($name[$key])) {

                    $info[$key] = $name[$key];

                }

            }

            // If all helper options are passed as an array, attribs may have 

            // been as well

            if (null === $attribs) {

                $attribs = $info['attribs'];

            }

        }

        $attribs = (array)$attribs;

        // Normalize readonly tag

        if (array_key_exists('readonly', $attribs)) {

            $attribs['readonly'] = 'readonly';

        }

        // Disable attribute

        if (array_key_exists('disable', $attribs)) {

           if (is_scalar($attribs['disable'])) {

                // disable the element

                $info['disable'] = (bool)$attribs['disable'];

            } else if (is_array($attribs['disable'])) {

                $info['disable'] = $attribs['disable'];

            }

        }

        // Set ID for element

        if (array_key_exists('id', $attribs)) {

            $info['id'] = (string)$attribs['id'];

        } else if ('' !== $info['name']) {

            $info['id'] = trim(strtr($info['name'],

                                     array('[' => '-', ']' => '')), '-');

        }

        // Determine escaping from attributes

        if (array_key_exists('escape', $attribs)) {

            $info['escape'] = (bool)$attribs['escape'];

        }

        // Determine listsetp from attributes

        if (array_key_exists('listsep', $attribs)) {

            $info['listsep'] = (string)$attribs['listsep'];

        }

        // Remove attribs that might overwrite the other keys. We do this LAST

        // because we needed the other attribs values earlier.

        foreach ($info as $key => $val) {

            if (array_key_exists($key, $attribs)) {

                unset($attribs[$key]);

            }

        }

        $info['attribs'] = $attribs;

        // done!

        return $info;

    }

    /**

     * Creates a hidden element.

     *

     * We have this as a common method because other elements often

     * need hidden elements for their operation.

     *

     * @access protected

     *

     * @param $name The element name.

     *

     * @param $value The element value.

     *

     * @param $attribs Attributes for the element.

     *

     * @return string A hidden element.

     */

    protected function _hidden($name, $value = null, $attribs = null)

    {

        return '<input type="hidden"'

             . ' name="' . $this->view->escape($name) . '"'

             . ' value="' . $this->view->escape($value) . '"'

             . $this->_htmlAttribs($attribs) . $this->getClosingBracket();

    }

}