<?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: RendererInterface.php 20096 2010-01-06 02:05:09Z bkarwin $
 */

/**
 * @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
 */
interface Zend_Feed_Writer_Renderer_RendererInterface
{
    /**
     * Render feed/entry
     * 
     * @return void
     */
    public function render();

    /**
     * Save feed and/or entry to XML and return string
     * 
     * @return string
     */
    public function saveXml();

    /**
     * Get DOM document
     * 
     * @return DOMDocument
     */
    public function getDomDocument();

    /**
     * Get document element from DOM
     * 
     * @return DOMElement
     */
    public function getElement();

    /**
     * Get data container containing feed items
     * 
     * @return mixed
     */
    public function getDataContainer();

    /**
     * Should exceptions be ignored?
     * 
     * @return mixed
     */
    public function ignoreExceptions();
    
    /**
     * Get list of thrown exceptions
     * 
     * @return array
     */
    public function getExceptions();
    
    /**
     * Set the current feed type being exported to "rss" or "atom". This allows
     * other objects to gracefully choose whether to execute or not, depending
     * on their appropriateness for the current type, e.g. renderers.
     *
     * @param string $type
     */
    public function setType($type);
    
    /**
     * Retrieve the current or last feed type exported.
     *
     * @return string Value will be "rss" or "atom"
     */
    public function getType();
    
    /**
     * Sets the absolute root element for the XML feed being generated. This
     * helps simplify the appending of namespace declarations, but also ensures
     * namespaces are added to the root element - not scattered across the entire
     * XML file - may assist namespace unsafe parsers and looks pretty ;).
     *
     * @param DOMElement $root
     */
    public function setRootElement(DOMElement $root);
    
    /**
     * Retrieve the absolute root element for the XML feed being generated.
     *
     * @return DOMElement
     */
    public function getRootElement();
}
