<?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_Feed_Writer

 * @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: Entry.php 22662 2010-07-24 17:37:36Z mabe $

 */

/**

 * @see Zend_Feed_Writer_Extension_RendererAbstract

 */

require_once 'Zend/Feed/Writer/Extension/RendererAbstract.php';

/**

 * @category   Zend

 * @package    Zend_Feed_Writer

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

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

 */

class Zend_Feed_Writer_Extension_ITunes_Renderer_Entry

    extends Zend_Feed_Writer_Extension_RendererAbstract

{

    /**

     * Set to TRUE if a rendering method actually renders something. This

     * is used to prevent premature appending of a XML namespace declaration

     * until an element which requires it is actually appended.

     *

     * @var bool

     */

    protected $_called = false;

    /**

     * Render entry

     * 

     * @return void

     */

    public function render()

    {

        $this->_setAuthors($this->_dom, $this->_base);

        $this->_setBlock($this->_dom, $this->_base);

        $this->_setDuration($this->_dom, $this->_base);

        $this->_setExplicit($this->_dom, $this->_base);

        $this->_setKeywords($this->_dom, $this->_base);

        $this->_setSubtitle($this->_dom, $this->_base);

        $this->_setSummary($this->_dom, $this->_base);

        if ($this->_called) {

            $this->_appendNamespaces();

        }

    }

    /**

     * Append namespaces to entry root

     * 

     * @return void

     */

    protected function _appendNamespaces()

    {

        $this->getRootElement()->setAttribute('xmlns:itunes',

            'http://www.itunes.com/dtds/podcast-1.0.dtd');  

    }

    /**

     * Set entry authors

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setAuthors(DOMDocument $dom, DOMElement $root)

    {

        $authors = $this->getDataContainer()->getItunesAuthors();

        if (!$authors || empty($authors)) {

            return;

        }

        foreach ($authors as $author) {

            $el = $dom->createElement('itunes:author');

            $text = $dom->createTextNode($author);

            $el->appendChild($text);

            $root->appendChild($el);

            $this->_called = true;

        }

    }

    /**

     * Set itunes block

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setBlock(DOMDocument $dom, DOMElement $root)

    {

        $block = $this->getDataContainer()->getItunesBlock();

        if ($block === null) {

            return;

        }

        $el = $dom->createElement('itunes:block');

        $text = $dom->createTextNode($block);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set entry duration

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setDuration(DOMDocument $dom, DOMElement $root)

    {

        $duration = $this->getDataContainer()->getItunesDuration();

        if (!$duration) {

            return;

        }

        $el = $dom->createElement('itunes:duration');

        $text = $dom->createTextNode($duration);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set explicit flag

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setExplicit(DOMDocument $dom, DOMElement $root)

    {

        $explicit = $this->getDataContainer()->getItunesExplicit();

        if ($explicit === null) {

            return;

        }

        $el = $dom->createElement('itunes:explicit');

        $text = $dom->createTextNode($explicit);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set entry keywords

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setKeywords(DOMDocument $dom, DOMElement $root)

    {

        $keywords = $this->getDataContainer()->getItunesKeywords();

        if (!$keywords || empty($keywords)) {

            return;

        }

        $el = $dom->createElement('itunes:keywords');

        $text = $dom->createTextNode(implode(',', $keywords));

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set entry subtitle

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setSubtitle(DOMDocument $dom, DOMElement $root)

    {

        $subtitle = $this->getDataContainer()->getItunesSubtitle();

        if (!$subtitle) {

            return;

        }

        $el = $dom->createElement('itunes:subtitle');

        $text = $dom->createTextNode($subtitle);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

    /**

     * Set entry summary

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

    protected function _setSummary(DOMDocument $dom, DOMElement $root)

    {

        $summary = $this->getDataContainer()->getItunesSummary();

        if (!$summary) {

            return;

        }

        $el = $dom->createElement('itunes:summary');

        $text = $dom->createTextNode($summary);

        $el->appendChild($text);

        $root->appendChild($el);

        $this->_called = true;

    }

}