<?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_Form

 * @subpackage Decorator

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

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

 */

/** Zend_Form_Decorator_Abstract */

require_once 'Zend/Form/Decorator/Abstract.php';

/** Zend_Form_Decorator_Marker_File_Interface */

require_once 'Zend/Form/Decorator/Marker/File/Interface.php';

/** Zend_File_Transfer_Adapter_Http */

require_once 'Zend/File/Transfer/Adapter/Http.php';

/**

 * Zend_Form_Decorator_File

 *

 * Fixes the rendering for all subform and multi file elements

 *

 * @category   Zend

 * @package    Zend_Form

 * @subpackage Decorator

 * @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: File.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

class Zend_Form_Decorator_File

    extends Zend_Form_Decorator_Abstract

    implements Zend_Form_Decorator_Marker_File_Interface

{

    /**

     * Attributes that should not be passed to helper

     * @var array

     */

    protected $_attribBlacklist = array('helper', 'placement', 'separator', 'value');

    /**

     * Default placement: append

     * @var string

     */

    protected $_placement = 'APPEND';

    /**

     * Get attributes to pass to file helper

     *

     * @return array

     */

    public function getAttribs()

    {

        $attribs   = $this->getOptions();

        if (null !== ($element = $this->getElement())) {

            $attribs = array_merge($attribs, $element->getAttribs());

        }

        foreach ($this->_attribBlacklist as $key) {

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

                unset($attribs[$key]);

            }

        }

        return $attribs;

    }

    /**

     * Render a form file

     *

     * @param  string $content

     * @return string

     */

    public function render($content)

    {

        $element = $this->getElement();

        if (!$element instanceof Zend_Form_Element) {

            return $content;

        }

        $view = $element->getView();

        if (!$view instanceof Zend_View_Interface) {

            return $content;

        }

        $name      = $element->getName();

        $attribs   = $this->getAttribs();

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

            $attribs['id'] = $name;

        }

        $separator = $this->getSeparator();

        $placement = $this->getPlacement();

        $markup    = array();

        $size      = $element->getMaxFileSize();

        if ($size > 0) {

            $element->setMaxFileSize(0);

            $markup[] = $view->formHidden('MAX_FILE_SIZE', $size);

        }

        if (Zend_File_Transfer_Adapter_Http::isApcAvailable()) {

            $markup[] = $view->formHidden(ini_get('apc.rfc1867_name'), uniqid(), array('id' => 'progress_key'));

        } else if (Zend_File_Transfer_Adapter_Http::isUploadProgressAvailable()) {

            $markup[] = $view->formHidden('UPLOAD_IDENTIFIER', uniqid(), array('id' => 'progress_key'));

        }

        if ($element->isArray()) {

            $name .= "[]";

            $count = $element->getMultiFile();

            for ($i = 0; $i < $count; ++$i) {

                $htmlAttribs        = $attribs;

                $htmlAttribs['id'] .= '-' . $i;

                $markup[] = $view->formFile($name, $htmlAttribs);

            }

        } else {

            $markup[] = $view->formFile($name, $attribs);

        }

        $markup = implode($separator, $markup);

        switch ($placement) {

            case self::PREPEND:

                return $markup . $separator . $content;

            case self::APPEND:

            default:

                return $content . $separator . $markup;

        }

    }

}