<?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_Threading_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()

    {

        if (strtolower($this->getType()) == 'rss') {

            return; // Atom 1.0 only

        }

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

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

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

        if ($this->_called) {

            $this->_appendNamespaces();

        }

    }

    /**

     * Append entry namespaces

     * 

     * @return void

     */

    protected function _appendNamespaces()

    {

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

            'http://purl.org/syndication/thread/1.0');  

    }

    /**

     * Set comment link

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

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

    {

        $link = $this->getDataContainer()->getCommentLink();

        if (!$link) {

            return;

        }

        $clink = $this->_dom->createElement('link');

        $clink->setAttribute('rel', 'replies');

        $clink->setAttribute('type', 'text/html');

        $clink->setAttribute('href', $link);

        $count = $this->getDataContainer()->getCommentCount();

        if ($count !== null) {

            $clink->setAttribute('thr:count', $count);

        }

        $root->appendChild($clink);

        $this->_called = true;

    }

    /**

     * Set comment feed links

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

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

    {

        $links = $this->getDataContainer()->getCommentFeedLinks();

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

            return;

        }

        foreach ($links as $link) {

            $flink = $this->_dom->createElement('link');

            $flink->setAttribute('rel', 'replies');

            $flink->setAttribute('type', 'application/'. $link['type'] .'+xml');

            $flink->setAttribute('href', $link['uri']);

            $count = $this->getDataContainer()->getCommentCount();

            if ($count !== null) {

                $flink->setAttribute('thr:count', $count);

            }

            $root->appendChild($flink);

            $this->_called = true;

        }

    }

    /**

     * Set entry comment count

     * 

     * @param  DOMDocument $dom 

     * @param  DOMElement $root 

     * @return void

     */

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

    {

        $count = $this->getDataContainer()->getCommentCount();

        if ($count === null) {

            return;

        }

        $tcount = $this->_dom->createElement('thr:total');

        $tcount->nodeValue = $count;

        $root->appendChild($tcount);

        $this->_called = true;

    }

}