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<?php
/**
 * @version		$Id: category.php 14401 2010-01-26 14:10:00Z louis $
 * @package		Joomla
 * @subpackage	Content
 * @copyright	Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
 * @license		GNU/GPL, see LICENSE.php
 * Joomla! is free software. This version may have been modified pursuant to the
 * GNU General Public License, and as distributed it includes or is derivative
 * of works licensed under the GNU General Public License or other free or open
 * source software licenses. See COPYRIGHT.php for copyright notices and
 * details.
 */

// Check to ensure this file is included in Joomla!
defined('_JEXEC') or die( 'Restricted access' );

jimport('joomla.application.component.model');

/**
 * Newsfeeds Component Category Model
 *
 * @package		Joomla
 * @subpackage	Newsfeeds
 * @since 1.5
 */
class NewsfeedsModelCategory extends JModel
{
	/**
	 * Category id
	 *
	 * @var int
	 */
	var $_id = null;

	/**
	 * Category data array
	 *
	 * @var array
	 */
	var $_data = null;

	/**
	 * Category total
	 *
	 * @var integer
	 */
	var $_total = null;

	/**
	 * Category data
	 *
	 * @var object
	 */
	var $_category = null;

	/**
	 * Constructor
	 *
	 * @since 1.5
	 */
	function __construct()
	{
		global $mainframe;

		parent::__construct();

		$config = JFactory::getConfig();

		// Get the pagination request variables
		$this->setState('limit', $mainframe->getUserStateFromRequest('com_newsfeeds.limit', 'limit', $config->getValue('config.list_limit'), 'int'));
		$this->setState('limitstart', JRequest::getVar('limitstart', 0, '', 'int'));

		$id = JRequest::getVar('id', 0, '', 'int');
		$this->setId((int)$id);

	}

	/**
	 * Method to set the category id
	 *
	 * @access	public
	 * @param	int	Category ID number
	 */
	function setId($id)
	{
		// Set category ID and wipe data
		$this->_id			= $id;
		$this->_category	= null;
	}

	/**
	 * Method to get newsfeed item data for the category
	 *
	 * @access public
	 * @return array
	 */
	function getData()
	{
		// Lets load the content if it doesn't already exist
		if (empty($this->_data))
		{
			$query = $this->_buildQuery();

			$this->_data = $this->_getList($query, $this->getState('limitstart'), $this->getState('limit'));

			$total = count($this->_data);
			for($i = 0; $i < $total; $i++)
			{
				$item =& $this->_data[$i];
				$item->slug = $item->id.'-'.$item->alias;
			}
		}

		return $this->_data;
	}

	/**
	 * Method to get the total number of newsfeed items for the category
	 *
	 * @access public
	 * @return integer
	 */
	function getTotal()
	{
		// Lets load the content if it doesn't already exist
		if (empty($this->_total))
		{
			$query = $this->_buildQuery();
			$this->_total = $this->_getListCount($query);
		}

		return $this->_total;
	}

	/**
	 * Method to get a pagination object of the newsfeeds items for the category
	 *
	 * @access public
	 * @return integer
	 */
	function getPagination()
	{
		// Lets load the content if it doesn't already exist
		if (empty($this->_pagination))
		{
			jimport('joomla.html.pagination');
			$this->_pagination = new JPagination( $this->getTotal(), $this->getState('limitstart'), $this->getState('limit') );
		}

		return $this->_pagination;
	}

	/**
	 * Method to get category data for the current category
	 *
	 * @since 1.5
	 */
	function getCategory()
	{
		// Load the Category data
		if ($this->_loadCategory())
		{
			// Initialize some variables
			$user = &JFactory::getUser();

			// Make sure the category is published
			if (!$this->_category->published) {
				JError::raiseError(404, JText::_("Resource Not Found"));
				return false;
			}
			// check whether category access level allows access
			if ($this->_category->access > $user->get('aid', 0)) {
				JError::raiseError(403, JText::_("ALERTNOTAUTH"));
				return false;
			}
		}
		return $this->_category;
	}

	/**
	 * Method to load category data if it doesn't exist.
	 *
	 * @access	private
	 * @return	boolean	True on success
	 */
	function _loadCategory()
	{
		if (empty($this->_category))
		{
			// current category info
			$query = 'SELECT c.*,' .
				' CASE WHEN CHAR_LENGTH(c.alias) THEN CONCAT_WS(\':\', c.id, c.alias) ELSE c.id END as slug '.
				' FROM #__categories AS c' .
				' WHERE c.id = '. (int) $this->_id .
				' AND c.section = "com_newsfeeds"';
			$this->_db->setQuery($query, 0, 1);
			$this->_category = $this->_db->loadObject();
		}
		return true;
	}

	function _buildQuery()
	{
		// We need to get a list of all weblinks in the given category
		$query = 'SELECT *' .
			' FROM #__newsfeeds' .
			' WHERE catid = '.(int) $this->_id.
			' AND published = 1' .
			' ORDER BY ordering';

		return $query;
	}
}
?>

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