/plugins/system/t3/includes/core/t3.php

<?php

/**

 *------------------------------------------------------------------------------

 * @package       T3 Framework for Joomla!

 *------------------------------------------------------------------------------

 * @copyright     Copyright (C) 2004-2013 JoomlArt.com. All Rights Reserved.

 * @license       GNU General Public License version 2 or later; see LICENSE.txt

 * @authors       JoomlArt, JoomlaBamboo, (contribute to this project at github

 *                & Google group to become co-author)

 * @Google group: https://groups.google.com/forum/#!forum/t3fw

 * @Link:         http://t3-framework.org

 *------------------------------------------------------------------------------

 */



// no direct access

defined('_JEXEC') or die('Restricted access');



/**

 * T3 class

 * Singleton class for T3

 * @package		T3

 */



class T3 {



	protected static $t3app = null;



	protected static $tmpl  = null;

	/**

	 * Import T3 Library

	 *

	 * @param string  $package  Object path that seperate by backslash (/)

	 *

	 * @return void

	 */

	public static function import($package){

		$path = T3_ADMIN_PATH . DIRECTORY_SEPARATOR . 'includes' . DIRECTORY_SEPARATOR . strtolower($package) . '.php';

		if (file_exists($path)) {

			include_once $path;

		} else {

			trigger_error('T3::import not found object: ' . $package, E_USER_ERROR);

		}

	}



	/**

	 * Register class with Joomla Loader. Override joomla core if $import_key avaiable

	 *

	 * @return void

	 */

  public static function register ($class, $path, $import_key = null) {

    if (!empty($import_key)) jimport($import_key);

    JLoader::register ($class, $path);

  }



	/**

	 * @param   object  $tpl  template object to initialize if needed

	 * @return  bool|null|T3Admin

	 */

	public static function getApp($tpl = null){

		if(empty(self::$t3app)){

			$japp = JFactory::getApplication();

			self::$t3app = $japp->isAdmin() ? self::getAdmin() : self::getSite($tpl);

		}



		return self::$t3app;

	}



	/**

	 * initialize T3

	 */

	public static function init ($xml) {

		$app       = JFactory::getApplication();

		$input     = $app->input;

		$coretheme = isset($xml->t3) && isset($xml->t3->base) ? trim((string)$xml->t3->base) : 'base';



		// check coretheme in media/t3/themes folder

		// if not exists, use default base theme in T3

		if (!$coretheme){

			$coretheme = 'base';

		}



		foreach(array(T3_EX_BASE_PATH, T3_ADMIN_PATH) as $basedir){

			if(is_dir($basedir . '/' . $coretheme)){



				if(is_file($basedir . '/' . $coretheme . '/define.php')){

					include_once ($basedir . '/' . $coretheme . '/define.php');

				}



				break;

			}

		}



		if(!defined('T3')){

			// get ready for the t3 core base theme

			include_once (T3_CORE_BASE_PATH . '/define.php');

		}



		if(!defined('T3')){

			T3::error(JText::sprintf('T3_MSG_FAILED_INIT_BASE', $coretheme));

			exit;

		}



		define ('T3_TEMPLATE', (String)$xml->tplname);

		define ('T3_TEMPLATE_URL', JURI::root(true).'/templates/'.T3_TEMPLATE);

		define ('T3_TEMPLATE_PATH', str_replace ('\\', '/', JPATH_ROOT) . '/templates/' . T3_TEMPLATE);

		define ('T3_TEMPLATE_REL', 'templates/' . T3_TEMPLATE);



		define ('T3_LOCAL_URL', T3_TEMPLATE_URL . '/' . T3_LOCAL_DIR);

		define ('T3_LOCAL_PATH', T3_TEMPLATE_PATH . '/' . T3_LOCAL_DIR);

		define ('T3_LOCAL_REL', T3_TEMPLATE_REL . '/' . T3_LOCAL_DIR);



		if ($input->getCmd('themer', 0)){

			define ('T3_THEMER', 1);

		}



		if (!$app->isAdmin()) {

			$params = $app->getTemplate(true)->params;

			define ('T3_DEV_FOLDER', $params->get ('t3-assets', 't3-assets') . '/dev');

			define ('T3_DEV_MODE', $params->get ('devmode', 0));

		} else {

			$params = self::getTemplate()->params;

			define ('T3_DEV_FOLDER', $params->get ('t3-assets', 't3-assets') . '/dev');

		}

		if (!is_dir(JPATH_ROOT.'/'.T3_DEV_FOLDER)) {

			jimport('joomla.filesystem.folder');

			JFolder::create(JPATH_ROOT.'/'.T3_DEV_FOLDER);

		}



		if($input->getCmd('t3lock', '')){

			JFactory::getSession()->set('T3.t3lock', $input->getCmd('t3lock', ''));

			$input->set('t3lock', null);

		}



		// load core library

		T3::import ('core/path');

		T3::import ('core/t3j');



		if (!$app->isAdmin()) {

			if(version_compare(JVERSION, '3.0', 'ge')){

				// override core joomla class

				// JViewLegacy

        T3::register('JViewLegacy',   T3_ADMIN_PATH . '/includes/joomla30/viewlegacy.php');

        T3::register('JViewHtml',   T3_ADMIN_PATH . '/includes/joomla30/viewhtml.php');

				// JModuleHelper

        T3::register('JModuleHelper',   T3_ADMIN_PATH . '/includes/joomla30/modulehelper.php');

				// JPagination

        T3::register('JPagination',   T3_ADMIN_PATH . '/includes/joomla30/pagination.php');

        // Register T3 Layout File to put a t3 base layer for layout files

        T3::register('JLayoutFile',   T3_ADMIN_PATH . '/includes/joomla25/layout/file.php');

			} else {

				// override core joomla class

				// JView

				T3::register('JView',       T3_ADMIN_PATH . '/includes/joomla25/view.php', 'joomla.application.component.view');

				// JModuleHelper

				T3::register('JModuleHelper',       T3_ADMIN_PATH . '/includes/joomla25/modulehelper.php', 'joomla.application.module.helper');

				// JPagination

				T3::register('JPagination',       T3_ADMIN_PATH . '/includes/joomla25/pagination.php', 'joomla.html.pagination');



				//register layout

				T3::register('JLayout',       T3_ADMIN_PATH . '/includes/joomla25/layout/layout.php');

				T3::register('JLayoutBase',   T3_ADMIN_PATH . '/includes/joomla25/layout/base.php');

				T3::register('JLayoutFile',   T3_ADMIN_PATH . '/includes/joomla25/layout/file.php');

				T3::register('JLayoutHelper', T3_ADMIN_PATH . '/includes/joomla25/layout/helper.php');

				T3::register('JHtmlBootstrap', T3_ADMIN_PATH . '/includes/joomla25/html/bootstrap.php');

				T3::register('JHtmlBehavior', T3_ADMIN_PATH . '/includes/joomla25/html/behavior.php');

        T3::register('JHtmlString', T3_ADMIN_PATH . '/includes/joomla25/html/string.php');

        T3::register('JHtmlJquery', T3_ADMIN_PATH . '/includes/joomla25/html/jquery.php');



        // load j25 compat language

        JFactory::getLanguage()->load('plg_system_t3.j25.compat', JPATH_ADMINISTRATOR);

			}



			// import renderer

			T3::import('renderer/pageclass');

			T3::import('renderer/megamenu');

			T3::import('renderer/t3bootstrap');

		} else {



		}



		// capture for tm=1 => show theme magic

		if ($input->getCmd('tm') == 1) {

			$input->set('t3action', 'theme');

			$input->set('t3task', 'thememagic');

		}

	}



	public static function checkAction () {

		// excute action by T3

		if ($action = JFactory::getApplication()->input->getCmd ('t3action')) {

			T3::import ('core/action');

			T3Action::run ($action);

		}

	}



	/**

	 * check for t3ajax action

	 */

	public static function checkAjax () {

		// excute action by T3

		$input = JFactory::getApplication()->input;



		if ($input->getCmd ('t3ajax')) {

			T3::import('core/ajax');

			T3::import('renderer/t3ajax');



			//T3Ajax::processAjaxRule();



			JFactory::getApplication()->getTemplate(true)->params->set('mainlayout', 'ajax.' . $input->getCmd('f', 'html'));

		}

	}



	/**

	 * get T3Admin object

	 * @return T3Admin

	 */

	public static function getAdmin(){

		T3::import ('core/admin');

		return new T3Admin();

	}



	/**

	 * get T3Template object for frontend

	 * @param $tpl

	 * @return bool

	 */

	public static function getSite($tpl){

		//when on site, the JDocumentHTML parameter must be pass

		if(empty($tpl)){

			return false;

		}



		$type = 'Template'. JFactory::getApplication()->input->getCmd ('t3tp', '');

		T3::import ('core/' . $type);



		// create global t3 template object

		$class = 'T3' . $type;

		return new $class($tpl);

	}



	/**

	 * @param $msg

	 * @param int $code

	 * @throws Exception

	 */

	public static function error($msg, $code = 500){

		if (JError::$legacy) {

			JError::setErrorHandling(E_ERROR, 'die');

			JError::raiseError($code, $msg);



			exit;

		} else {

			throw new Exception($msg, $code);

		}

	}



	/**

	 * detect function to check a current template is T3 template

	 * @return bool|SimpleXMLElement

	 */

	public static function detect(){

		static $t3;



		if (!isset($t3)) {

			$t3 = false; // set false

			$app = JFactory::getApplication();

			$input = $app->input;



			// get template name

			$tplname = '';



			if($input->getCmd ('t3action') && $input->getInt('styleid', '')) {



				$tplname = self::getTemplate(true);



			} elseif ($app->isAdmin()) {

				// if not login, do nothing

				$user = JFactory::getUser();

				if (!$user->id){

					return false;

				}



				if($input->getCmd('option') == 'com_templates' &&

					(preg_match('/style\./', $input->getCmd('task')) ||

						$input->getCmd('view') == 'style' ||

						$input->getCmd('view') == 'template')){



					$db    = JFactory::getDBO();

					$query = $db->getQuery(true);

					$id    = $input->getInt('id');



					//when in POST the view parameter does not set

					if ($input->getCmd('view') == 'template') {

						$query

							->select('element')

							->from('#__extensions')

							->where('extension_id='.(int)$id . ' AND type=' . $db->quote('template'));

					} else {

						$query

							->select('template')

							->from('#__template_styles')

							->where('id='.(int)$id);

					}



					$db->setQuery($query);

					$tplname = $db->loadResult();

				}



			} else {

				$tplname = $app->getTemplate(false);

			}



			if ($tplname) {

					// parse xml

				$filePath = JPath::clean(JPATH_ROOT.'/templates/'.$tplname.'/templateDetails.xml');

				if (is_file ($filePath)) {

					$xml = $xml = simplexml_load_file($filePath);

					// check t3 or group=t3 (compatible with previous definition)

					if (isset($xml->t3) || (isset($xml->group) && strtolower($xml->group) == 't3')) {

						$xml->tplname = $tplname;

						$t3 = $xml;

					}

				}

			}

		}

		return $t3;

	}



	/**

	 * get default template style

	 */

	public static function getDefaultTemplate($name = false){

		static $template;



		if (!isset($template)) {



			$db = JFactory::getDbo();

			$query = $db->getQuery(true);

			$query

				->select('id, home, template, s.params')

				->from('#__template_styles as s')

				->where('s.client_id = 0')

				->where('s.home = \'1\'')

				->where('e.enabled = 1')

				->leftJoin('#__extensions as e ON e.element=s.template AND e.type='.$db->quote('template').' AND e.client_id=s.client_id');



			$db->setQuery($query);

			$result = $db->loadObject();



			$template = !empty($result) ? $result : false;

		}



		if($name && $template){

			return $template->template;

		}



		return $template;

	}



	/**

	 * get the template object or template name

	 * @param bool $name

	 * @return mixed template object or template name

	 */

	public static function getTemplate($name = false)

	{

		if(!isset(self::$tmpl) || !self::$tmpl){



			$app   = JFactory::getApplication();

			$input = $app->input;

			$id    = $input->getInt('styleid', $input->getInt('id'));



			if($id){

				$db    = JFactory::getDbo();

				$query = $db->getQuery(true);

				$query

					->select('template, params')

					->from('#__template_styles')

					->where('client_id = 0');



				if($app->isAdmin() && $input->get('view') == 'template' && defined('T3_TEMPLATE')){

					$query->where('template='. $db->quote(T3_TEMPLATE));

				} else {

					$query->where('id='. $id);

				}



				$db->setQuery($query);

				$template = $db->loadObject();



				if ($template) {

					$registry = new JRegistry;

					$registry->loadString($template->params);

					$template->params = $registry;

				}



				self::$tmpl = $template;

			}

		}



		if($name && self::$tmpl){

			return self::$tmpl->template;

		}



		return self::$tmpl;

	}



	/**

	 * set caching template and its parameters

	 * @param string $name

	 * @param string $params

	 */

	public static function setTemplate($name = '', $params = ''){

		if(!self::$tmpl){

			self::$tmpl = new stdClass;

		}



		if($name && $params){

			self::$tmpl->template = $name;

			self::$tmpl->params = $params;

		}

	}



	/**

	 * get template parameters

	 * @return JRegistry

	 */

	public static function getTplParams()

	{

		$tmpl = self::getTemplate();

		return $tmpl ? $tmpl->params : new JRegistry; //empty registry ? or throw error

	}



	/**

	 * check if current page is homepage

	 */

	public static function isHome(){

		$active = JFactory::getApplication()->getMenu()->getActive();

		return (!$active || $active->home);

	}



	/**

	 * fix ja back link

	 * @param $buffer

	 * @return mixed

	 */

	public static function fixJALink($buffer){



		if(!self::isHome()){

			$buffer = preg_replace_callback('@<a[^>]*>JoomlArt.com</a>@i', array('T3', 'removeBacklink'), $buffer);

		}



		return $buffer;

	}



	/**

	 * fix t3-framework.org back link

	 * @param $buffer

	 * @return mixed

	 */

	public static function fixT3Link($buffer){

		if(!self::isHome()){

			$buffer = preg_replace_callback('@<a[^>]*>([^>]*)>T3 Framework</strong></a>@mi', array('T3', 'removeBacklink'), $buffer);

		}



		return $buffer;

	}



	/**

	 * check nofollow attribute

	 * @param $match

	 * @return mixed

	 */

	public static function removeBacklink($match){



		if($match && isset($match[0]) && strpos($match[0], 'rel="nofollow"') === false){

			$match[0] = str_replace('<a ', '<a rel="nofollow" ', $match[0]);

		}



		return $match[0];

	}



}