primo commit

libraries/fof30/View/Compiler/CompilerInterface.php

@@ -0,0 +1,40 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Compiler;
+
+defined('_JEXEC') || die;
+
+interface CompilerInterface
+{
+	/**
+	 * Are the results of this compiler engine cacheable? If the engine makes use of the forcedParams it must return
+	 * false.
+	 *
+	 * @return  mixed
+	 */
+	public function isCacheable();
+
+	/**
+	 * Compile a view template into PHP and HTML
+	 *
+	 * @param   string  $path         The absolute filesystem path of the view template
+	 * @param   array   $forceParams  Any parameters to force (only for engines returning raw HTML)
+	 *
+	 * @return mixed
+	 */
+	public function compile($path, array $forceParams = []);
+
+	/**
+	 * Returns the file extension supported by this compiler
+	 *
+	 * @return  string
+	 *
+	 * @since   3.3.1
+	 */
+	public function getFileExtension();
+}

libraries/fof30/View/DataView/Csv.php

@@ -0,0 +1,276 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\DataView;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use FOF30\Container\Container;
+use FOF30\Model\DataModel;
+use FOF30\View\Exception\AccessForbidden;
+use Joomla\CMS\Document\Document;
+
+class Csv extends Html implements DataViewInterface
+{
+	/**
+	 *  Should I produce a CSV header row.
+	 *
+	 * @var  boolean
+	 */
+	protected $csvHeader = true;
+
+	/**
+	 * The filename of the downloaded CSV file.
+	 *
+	 * @var  string
+	 */
+	protected $csvFilename = null;
+
+	/**
+	 * The columns to include in the CSV output. If it's empty it will be ignored.
+	 *
+	 * @var  array
+	 */
+	protected $csvFields = [];
+
+
+	/**
+	 * Public constructor. Instantiates a F0FViewCsv object.
+	 *
+	 *
+	 * @param   Container  $container  The container we belong to
+	 * @param   array      $config     The configuration overrides for the view
+	 */
+	public function __construct(Container $container, array $config = [])
+	{
+		parent::__construct($container, $config);
+
+		if (array_key_exists('csv_header', $config))
+		{
+			$this->csvHeader = $config['csv_header'];
+		}
+		else
+		{
+			$this->csvHeader = $this->input->getBool('csv_header', true);
+		}
+
+		if (array_key_exists('csv_filename', $config))
+		{
+			$this->csvFilename = $config['csv_filename'];
+		}
+		else
+		{
+			$this->csvFilename = $this->input->getString('csv_filename', '');
+		}
+
+		if (empty($this->csvFilename))
+		{
+			$view              = $this->input->getCmd('view', 'cpanel');
+			$view              = $this->container->inflector->pluralize($view);
+			$this->csvFilename = strtolower($view) . '.csv';
+		}
+
+		if (array_key_exists('csv_fields', $config))
+		{
+			$this->csvFields = $config['csv_fields'];
+		}
+	}
+
+	/**
+	 * Overrides the default method to execute and display a template script.
+	 * Instead of loadTemplate is uses loadAnyTemplate.
+	 *
+	 * @param   string  $tpl  The name of the template file to parse
+	 *
+	 * @return  boolean  True on success
+	 *
+	 * @throws  Exception  When the layout file is not found
+	 */
+	public function display($tpl = null)
+	{
+		$eventName = 'onBefore' . ucfirst($this->doTask);
+		$this->triggerEvent($eventName, [$tpl]);
+
+		// Load the model
+		/** @var DataModel $model */
+		$model = $this->getModel();
+
+		$items       = $model->get();
+		$this->items = $items;
+
+		$platform = $this->container->platform;
+		$document = $platform->getDocument();
+
+		if ($document instanceof Document)
+		{
+			$document->setMimeEncoding('text/csv');
+		}
+
+		$platform->setHeader('Pragma', 'public');
+		$platform->setHeader('Expires', '0');
+
+		/**
+		 * This construct is required to work around bad quality hosts who blacklist files based on broken malware
+		 * scanners. The only way to beat them is... wait for it... write our software using the same obscure constructs
+		 * actual malware is using to evade these broken malware scanners. The irony is not lost on me.
+		 */
+		$xo   = substr("revenge", 0, 3);
+		$xoxo = substr("calibrate", 1, 2);
+		$platform->setHeader('Cache-Control', 'must-' . $xo . $xoxo . 'idate, post-check=0, pre-check=0');
+
+		$platform->setHeader('Cache-Control', 'public', false);
+		$platform->setHeader('Content-Description', 'File Transfer');
+		$platform->setHeader('Content-Disposition', 'attachment; filename="' . $this->csvFilename . '"');
+
+		if (is_null($tpl))
+		{
+			$tpl = 'csv';
+		}
+
+		$hasFailed = false;
+
+		try
+		{
+			$result = $this->loadTemplate($tpl, true);
+
+			if ($result instanceof Exception)
+			{
+				$hasFailed = true;
+			}
+		}
+		catch (Exception $e)
+		{
+			$hasFailed = true;
+		}
+
+		if (!$hasFailed)
+		{
+			echo $result;
+		}
+		else
+		{
+			// Default CSV behaviour in case the template isn't there!
+			if (count($items) === 0)
+			{
+				throw new AccessForbidden;
+			}
+
+			$item = $items->last();
+			$keys = $item->getData();
+			$keys = array_keys($keys);
+
+			reset($items);
+
+			if (!empty($this->csvFields))
+			{
+				$temp = [];
+
+				foreach ($this->csvFields as $f)
+				{
+					$exist = false;
+
+					// If we have a dot and it isn't part of the field name, we are dealing with relations
+					if (!$model->hasField($f) && strpos($f, '.'))
+					{
+						$methods = explode('.', $f);
+						$object  = $item;
+						// Let's see if the relation exists
+						foreach ($methods as $method)
+						{
+							if (isset($object->$method) || property_exists($object, $method))
+							{
+								$exist  = true;
+								$object = $object->$method;
+							}
+							else
+							{
+								$exist = false;
+								break;
+							}
+						}
+					}
+
+					if (in_array($f, $keys))
+					{
+						$temp[] = $f;
+					}
+					elseif ($exist)
+					{
+						$temp[] = $f;
+					}
+				}
+
+				$keys = $temp;
+			}
+
+			if ($this->csvHeader)
+			{
+				$csv = [];
+
+				foreach ($keys as $k)
+				{
+					$k = str_replace('"', '""', $k);
+					$k = str_replace("\r", '\\r', $k);
+					$k = str_replace("\n", '\\n', $k);
+					$k = '"' . $k . '"';
+
+					$csv[] = $k;
+				}
+
+				echo implode(",", $csv) . "\r\n";
+			}
+
+			foreach ($items as $item)
+			{
+				$csv = [];
+
+				foreach ($keys as $k)
+				{
+					// If our key contains a dot and it isn't part of the field name, we are dealing with relations
+					if (!$model->hasField($k) && strpos($k, '.'))
+					{
+						$methods = explode('.', $k);
+						$v       = $item;
+
+						foreach ($methods as $method)
+						{
+							$v = $v->$method;
+						}
+					}
+					else
+					{
+						$v = $item->$k;
+					}
+
+					if (is_array($v))
+					{
+						$v = 'Array';
+					}
+					elseif (is_object($v))
+					{
+						$v = 'Object';
+					}
+
+					$v = str_replace('"', '""', $v);
+					$v = str_replace("\r", '\\r', $v);
+					$v = str_replace("\n", '\\n', $v);
+					$v = '"' . $v . '"';
+
+					$csv[] = $v;
+				}
+
+				echo implode(",", $csv) . "\r\n";
+			}
+		}
+
+		$eventName = 'onAfter' . ucfirst($this->doTask);
+		$this->triggerEvent($eventName, [$tpl]);
+
+		return true;
+	}
+}

libraries/fof30/View/DataView/DataViewInterface.php

@@ -0,0 +1,146 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\DataView;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use FOF30\Container\Container;
+use Joomla\CMS\Pagination\Pagination;
+use stdClass;
+
+interface DataViewInterface
+{
+	/**
+	 * Determines if the current Joomla! version and your current table support AJAX-powered drag and drop reordering.
+	 * If they do, it will set up the drag & drop reordering feature.
+	 *
+	 * @return  boolean|array  False if not supported, otherwise a table with necessary information (saveOrder: should
+	 *                           you enable DnD reordering; orderingColumn: which column has the ordering information).
+	 */
+	public function hasAjaxOrderingSupport();
+
+	/**
+	 * Returns the internal list of useful variables to the benefit of header fields.
+	 *
+	 * @return stdClass
+	 */
+	public function getLists();
+
+	/**
+	 * Returns a reference to the permissions object of this view
+	 *
+	 * @return stdClass
+	 */
+	public function getPerms();
+
+	/**
+	 * Returns a reference to the pagination object of this view
+	 *
+	 * @return Pagination
+	 */
+	public function getPagination();
+
+	/**
+	 * Method to get the view name
+	 *
+	 * The model name by default parsed using the classname, or it can be set
+	 * by passing a $config['name'] in the class constructor
+	 *
+	 * @return  string  The name of the model
+	 *
+	 * @throws  Exception
+	 */
+	public function getName();
+
+	/**
+	 * Returns a reference to the container attached to this View
+	 *
+	 * @return  Container
+	 */
+	public function &getContainer();
+
+	/**
+	 * Escapes a value for output in a view script.
+	 *
+	 * @param   mixed  $var  The output to escape.
+	 *
+	 * @return  string  The escaped value.
+	 */
+	public function escape($var);
+
+	/**
+	 * Returns the task being rendered by the view
+	 *
+	 * @return  string
+	 */
+	public function getTask();
+
+	/**
+	 * Get the layout.
+	 *
+	 * @return  string  The layout name
+	 */
+	public function getLayout();
+
+	/**
+	 * Add a JS script file to the page generated by the CMS.
+	 *
+	 * There are three combinations of defer and async (see http://www.w3schools.com/tags/att_script_defer.asp):
+	 * * $defer false, $async true: The script is executed asynchronously with the rest of the page
+	 *   (the script will be executed while the page continues the parsing)
+	 * * $defer true, $async false: The script is executed when the page has finished parsing.
+	 * * $defer false, $async false. (default) The script is loaded and executed immediately. When it finishes
+	 *   loading the browser continues parsing the rest of the page.
+	 *
+	 * When you are using $defer = true there is no guarantee about the load order of the scripts. Whichever
+	 * script loads first will be executed first. The order they appear on the page is completely irrelevant.
+	 *
+	 * @param   string   $uri      A path definition understood by parsePath, e.g. media://com_example/js/foo.js
+	 * @param   string   $version  (optional) Version string to be added to the URL
+	 * @param   string   $type     MIME type of the script
+	 * @param   boolean  $defer    Adds the defer attribute, see above
+	 * @param   boolean  $async    Adds the async attribute, see above
+	 *
+	 * @return  $this  Self, for chaining
+	 */
+	public function addJavascriptFile($uri, $version = null, $type = 'text/javascript', $defer = false, $async = false);
+
+	/**
+	 * Adds an inline JavaScript script to the page header
+	 *
+	 * @param   string  $script  The script content to add
+	 * @param   string  $type    The MIME type of the script
+	 *
+	 * @return  $this  Self, for chaining
+	 */
+	public function addJavascriptInline($script, $type = 'text/javascript');
+
+	/**
+	 * Add a CSS file to the page generated by the CMS
+	 *
+	 * @param   string  $uri      A path definition understood by parsePath, e.g. media://com_example/css/foo.css
+	 * @param   string  $version  (optional) Version string to be added to the URL
+	 * @param   string  $type     MIME type of the stylesheeet
+	 * @param   string  $media    Media target definition of the style sheet, e.g. "screen"
+	 * @param   array   $attribs  Array of attributes
+	 *
+	 * @return  $this  Self, for chaining
+	 */
+	public function addCssFile($uri, $version = null, $type = 'text/css', $media = null, $attribs = []);
+
+	/**
+	 * Adds an inline stylesheet (inline CSS) to the page header
+	 *
+	 * @param   string  $css   The stylesheet content to add
+	 * @param   string  $type  The MIME type of the script
+	 *
+	 * @return  $this  Self, for chaining
+	 */
+	public function addCssInline($css, $type = 'text/css');
+}

libraries/fof30/View/DataView/Html.php

@@ -0,0 +1,176 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\DataView;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use FOF30\Render\RenderInterface;
+use Joomla\CMS\Application\SiteApplication;
+use Joomla\CMS\Factory;
+use Joomla\CMS\Language\Text;
+
+class Html extends Raw implements DataViewInterface
+{
+	/** @var bool Should I set the page title in the front-end of the site? */
+	public $setFrontendPageTitle = false;
+
+	/** @var string The translation key for the default page title */
+	public $defaultPageTitle = null;
+
+	public function setPageTitle()
+	{
+		if (!$this->container->platform->isFrontend())
+		{
+			return '';
+		}
+
+		/** @var SiteApplication $app */
+		$app      = Factory::getApplication();
+		$document = Factory::getDocument();
+		$menus    = $app->getMenu();
+		$menu     = $menus->getActive();
+		$title    = null;
+
+		// Get the option and view name
+		$option = $this->container->componentName;
+		$view   = $this->getName();
+
+		// Get the default page title translation key
+		$default = empty($this->defaultPageTitle) ? $option . '_TITLE_' . $view : $this->defaultPageTitle;
+
+		$params = $app->getParams($option);
+
+		// Set the default value for page_heading
+		if ($menu)
+		{
+			$params->def('page_heading', $params->get('page_title', $menu->title));
+		}
+		else
+		{
+			$params->def('page_heading', Text::_($default));
+		}
+
+		// Set the document title
+		$title    = $params->get('page_title', '');
+		$sitename = $app->get('sitename');
+
+		if ($title == $sitename)
+		{
+			$title = Text::_($default);
+		}
+
+		if (empty($title))
+		{
+			$title = $sitename;
+		}
+		elseif ($app->get('sitename_pagetitles', 0) == 1)
+		{
+			$title = Text::sprintf('JPAGETITLE', $app->get('sitename'), $title);
+		}
+		elseif ($app->get('sitename_pagetitles', 0) == 2)
+		{
+			$title = Text::sprintf('JPAGETITLE', $title, $app->get('sitename'));
+		}
+
+		$document->setTitle($title);
+
+		// Set meta
+		if ($params->get('menu-meta_description'))
+		{
+			$document->setDescription($params->get('menu-meta_description'));
+		}
+
+		if ($params->get('menu-meta_keywords'))
+		{
+			$document->setMetadata('keywords', $params->get('menu-meta_keywords'));
+		}
+
+		if ($params->get('robots'))
+		{
+			$document->setMetadata('robots', $params->get('robots'));
+		}
+
+		return $title;
+	}
+
+	/**
+	 * Runs before rendering the view template, echoing HTML to put before the
+	 * view template's generated HTML
+	 *
+	 * @return  void
+	 *
+	 * @throws Exception
+	 */
+	protected function preRender()
+	{
+		$view = $this->getName();
+		$task = $this->task;
+
+		// Don't load the toolbar on CLI
+		$platform = $this->container->platform;
+
+		if (!$platform->isCli())
+		{
+			$toolbar        = $this->container->toolbar;
+			$toolbar->perms = $this->permissions;
+			$toolbar->renderToolbar($view, $task);
+		}
+
+		if ($platform->isFrontend() && $this->setFrontendPageTitle)
+		{
+			$this->setPageTitle();
+		}
+
+		$renderer = $this->container->renderer;
+		$renderer->preRender($view, $task);
+	}
+
+	/**
+	 * Runs after rendering the view template, echoing HTML to put after the
+	 * view template's generated HTML
+	 *
+	 * @return  void
+	 *
+	 * @throws Exception
+	 */
+	protected function postRender()
+	{
+		$view = $this->getName();
+		$task = $this->task;
+
+		$renderer = $this->container->renderer;
+
+		if ($renderer instanceof RenderInterface)
+		{
+			$renderer->postRender($view, $task);
+		}
+	}
+
+	/**
+	 * Executes before rendering the page for the Add task.
+	 */
+	protected function onBeforeAdd()
+	{
+		// Hide main menu
+		Factory::getApplication()->input->set('hidemainmenu', true);
+
+		parent::onBeforeAdd();
+	}
+
+	/**
+	 * Executes before rendering the page for the Edit task.
+	 */
+	protected function onBeforeEdit()
+	{
+		// Hide main menu
+		Factory::getApplication()->input->set('hidemainmenu', true);
+
+		parent::onBeforeEdit();
+	}
+}

libraries/fof30/View/DataView/Json.php

@@ -0,0 +1,271 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\DataView;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use FOF30\Model\DataModel;
+use Joomla\CMS\Document\Document;
+use Joomla\CMS\Document\JsonDocument as JDocumentJSON;
+
+class Json extends Raw implements DataViewInterface
+{
+	/**
+	 * Set to true if your onBefore* methods have already populated the item, items, limitstart etc properties used to
+	 * render a JSON document.
+	 *
+	 * @var bool
+	 */
+	public $alreadyLoaded = false;
+
+	/**
+	 * Record listing offset (how many records to skip before starting showing some)
+	 *
+	 * @var   int
+	 */
+	protected $limitStart = 0;
+
+	/**
+	 * Record listing limit (how many records to show)
+	 *
+	 * @var   int
+	 */
+	protected $limit = 10;
+
+	/**
+	 * Total number of records in the result set
+	 *
+	 * @var   int
+	 */
+	protected $total = 0;
+
+	/**
+	 * The record being displayed
+	 *
+	 * @var   DataModel
+	 */
+	protected $item = null;
+
+	/**
+	 * Overrides the default method to execute and display a template script.
+	 * Instead of loadTemplate is uses loadAnyTemplate.
+	 *
+	 * @param   string  $tpl  The name of the template file to parse
+	 *
+	 * @return  boolean  True on success
+	 *
+	 * @throws  Exception  When the layout file is not found
+	 */
+	public function display($tpl = null)
+	{
+		$eventName = 'onBefore' . ucfirst($this->doTask);
+		$this->triggerEvent($eventName, [$tpl]);
+
+		$eventName = 'onAfter' . ucfirst($this->doTask);
+		$this->triggerEvent($eventName, [$tpl]);
+
+		return true;
+	}
+
+	/**
+	 * The event which runs when we are displaying the record list JSON view
+	 *
+	 * @param   string  $tpl  The sub-template to use
+	 */
+	public function onBeforeBrowse($tpl = null)
+	{
+		// Load the model
+		/** @var DataModel $model */
+		$model = $this->getModel();
+
+		$result = '';
+
+		if (!$this->alreadyLoaded)
+		{
+			$this->limitStart = $model->getState('limitstart', 0);
+			$this->limit      = $model->getState('limit', 0);
+			$this->items      = $model->get(true, $this->limitStart, $this->limit);
+			$this->total      = $model->count();
+		}
+
+		$document = $this->container->platform->getDocument();
+
+		/** @var JDocumentJSON $document */
+		if ($document instanceof Document)
+		{
+			$document->setMimeEncoding('application/json');
+		}
+
+		if (is_null($tpl))
+		{
+			$tpl = 'json';
+		}
+
+		$hasFailed = false;
+
+		try
+		{
+			$result = $this->loadTemplate($tpl, true);
+
+			if ($result instanceof Exception)
+			{
+				$hasFailed = true;
+			}
+		}
+		catch (Exception $e)
+		{
+			$hasFailed = true;
+		}
+
+		if ($hasFailed)
+		{
+			// Default JSON behaviour in case the template isn't there!
+			$result = [];
+
+			foreach ($this->items as $item)
+			{
+				if (is_object($item) && method_exists($item, 'toArray'))
+				{
+					$result[] = $item->toArray();
+				}
+				else
+				{
+					$result[] = $item;
+				}
+			}
+
+			$json = json_encode($result, JSON_PRETTY_PRINT);
+
+			// JSONP support
+			$callback = $this->input->get('callback', null, 'raw');
+
+			if (!empty($callback))
+			{
+				echo $callback . '(' . $json . ')';
+			}
+			else
+			{
+				$defaultName = $this->input->get('view', 'main', 'cmd');
+				$filename    = $this->input->get('basename', $defaultName, 'cmd');
+
+				$document->setName($filename);
+				echo $json;
+			}
+		}
+		else
+		{
+			echo $result;
+		}
+	}
+
+	/**
+	 * The event which runs when we are displaying a single item JSON view
+	 *
+	 * @param   string  $tpl  The view sub-template to use
+	 */
+	protected function onBeforeRead($tpl = null)
+	{
+		self::renderSingleItem($tpl);
+	}
+
+	/**
+	 * The event which runs when we are displaying a single item JSON view
+	 *
+	 * @param   string  $tpl  The view sub-template to use
+	 */
+	protected function onAfterSave($tpl = null)
+	{
+		self::renderSingleItem($tpl);
+	}
+
+	/**
+	 * Renders a single item JSON view
+	 *
+	 * @param   string  $tpl  The view sub-template to use
+	 */
+	protected function renderSingleItem($tpl)
+	{
+		// Load the model
+		/** @var DataModel $model */
+		$model = $this->getModel();
+
+		$result = '';
+
+		if (!$this->alreadyLoaded)
+		{
+			$this->item = $model->find();
+		}
+
+
+		$document = $this->container->platform->getDocument();
+
+		/** @var JDocumentJSON $document */
+		if ($document instanceof Document)
+		{
+			$document->setMimeEncoding('application/json');
+		}
+
+		if (is_null($tpl))
+		{
+			$tpl = 'json';
+		}
+
+		$hasFailed = false;
+
+		try
+		{
+			$result = $this->loadTemplate($tpl, true);
+
+			if ($result instanceof Exception)
+			{
+				$hasFailed = true;
+			}
+		}
+		catch (Exception $e)
+		{
+			$hasFailed = true;
+		}
+
+		if ($hasFailed)
+		{
+			// Default JSON behaviour in case the template isn't there!
+
+			if (is_object($this->item) && method_exists($this->item, 'toArray'))
+			{
+				$data = $this->item->toArray();
+			}
+			else
+			{
+				$data = $this->item;
+			}
+
+			$json = json_encode($data, JSON_PRETTY_PRINT);
+
+			// JSONP support
+			$callback = $this->input->get('callback', null);
+
+			if (!empty($callback))
+			{
+				echo $callback . '(' . $json . ')';
+			}
+			else
+			{
+				$defaultName = $this->input->get('view', 'main', 'cmd');
+				$filename    = $this->input->get('basename', $defaultName, 'cmd');
+				$document->setName($filename);
+
+				echo $json;
+			}
+		}
+		else
+		{
+			echo $result;
+		}
+	}
+}

libraries/fof30/View/DataView/Raw.php

@@ -0,0 +1,379 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\DataView;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use FOF30\Container\Container;
+use FOF30\Model\DataModel;
+use FOF30\Model\DataModel\Collection;
+use FOF30\View\View;
+use Joomla\CMS\Application\SiteApplication;
+use Joomla\CMS\Factory;
+use Joomla\CMS\HTML\HTMLHelper;
+use Joomla\CMS\Pagination\Pagination;
+use Joomla\Registry\Registry;
+use stdClass;
+
+/**
+ * View for a raw data-driven view
+ */
+class Raw extends View implements DataViewInterface
+{
+	/** @var   stdClass  Data lists */
+	protected $lists = null;
+
+	/** @var Pagination The pagination object */
+	protected $pagination = null;
+
+	/** @var Registry|Registry Page parameters object, for front-end views */
+	protected $pageParams = null;
+
+	/** @var Collection The records loaded (browse views) */
+	protected $items = null;
+
+	/** @var DataModel The record loaded (read, edit, add views) */
+	protected $item = null;
+
+	/** @var int The total number of items in the model (more than those loaded) */
+	protected $itemCount = 0;
+
+	/** @var stdClass ACL permissions map */
+	protected $permissions = null;
+
+	/** @var array Additional permissions to fetch on object creation, see getPermissions() */
+	protected $additionalPermissions = [];
+
+	/**
+	 * Overrides the constructor to apply Joomla! ACL permissions
+	 *
+	 * @param   Container  $container  The container we belong to
+	 * @param   array      $config     The configuration overrides for the view
+	 */
+	public function __construct(Container $container, array $config = [])
+	{
+		parent::__construct($container, $config);
+
+		$this->permissions = $this->getPermissions(null, $this->additionalPermissions);
+	}
+
+	/**
+	 * Determines if the current Joomla! version and your current table support AJAX-powered drag and drop reordering.
+	 * If they do, it will set up the drag & drop reordering feature.
+	 *
+	 * @return  boolean|array  False if not supported, otherwise a table with necessary information (saveOrder: should
+	 *                           you enable DnD reordering; orderingColumn: which column has the ordering information).
+	 */
+	public function hasAjaxOrderingSupport()
+	{
+		/** @var DataModel $model */
+		$model = $this->getModel();
+
+		if (!$model->hasField('ordering'))
+		{
+			return false;
+		}
+
+		$listOrder       = $this->escape($model->getState('filter_order', null, 'cmd'));
+		$listDirn        = $this->escape($model->getState('filter_order_Dir', null, 'cmd'));
+		$saveOrder       = $listOrder == $model->getFieldAlias('ordering');
+		$saveOrderingUrl = '';
+
+		if ($saveOrder)
+		{
+			$saveOrderingUrl = 'index.php?option=' . $this->container->componentName . '&view=' . $this->getName() . '&task=saveorder&format=json';
+			$helper          = version_compare(JVERSION, '3.999.999', 'le') ? 'sortablelist.sortable' : 'draggablelist.draggable';
+
+			HtmlHelper::_($helper, 'itemsList', 'adminForm', strtolower($listDirn), $saveOrderingUrl);
+		}
+
+		return [
+			'saveOrder'      => $saveOrder,
+			'saveOrderURL'   => $saveOrderingUrl . '&' . $this->container->platform->getToken() . '=1',
+			'orderingColumn' => $model->getFieldAlias('ordering'),
+		];
+	}
+
+	/**
+	 * Returns the internal list of useful variables to the benefit of header fields.
+	 *
+	 * @return stdClass
+	 */
+	public function getLists()
+	{
+		return $this->lists;
+	}
+
+	/**
+	 * Returns a reference to the permissions object of this view
+	 *
+	 * @return stdClass
+	 */
+	public function getPerms()
+	{
+		return $this->permissions;
+	}
+
+	/**
+	 * Returns a reference to the pagination object of this view
+	 *
+	 * @return Pagination
+	 */
+	public function getPagination()
+	{
+		return $this->pagination;
+	}
+
+	/**
+	 * Get the items collection for browse views
+	 *
+	 * @return Collection
+	 */
+	public function getItems()
+	{
+		return $this->items;
+	}
+
+	/**
+	 * Get the item for read, edit, add views
+	 *
+	 * @return DataModel
+	 */
+	public function getItem()
+	{
+		return $this->item;
+	}
+
+	/**
+	 * Get the items count for browse views
+	 *
+	 * @return int
+	 */
+	public function getItemCount()
+	{
+		return $this->itemCount;
+	}
+
+	/**
+	 * Get the Joomla! page parameters
+	 *
+	 * @return Registry|Registry
+	 */
+	public function getPageParams()
+	{
+		return $this->pageParams;
+	}
+
+	/**
+	 * Returns a permissions object.
+	 *
+	 * The additionalPermissions array is a hashed array of local key => Joomla! ACL key value pairs. Local key is the
+	 * name of the permission in the permissions object, whereas Joomla! ACL key is the name of the ACL permission
+	 * known to Joomla! e.g. "core.manage", "foobar.something" and so on.
+	 *
+	 * Note: on CLI applications all permissions are set to TRUE. There is no ACL check there.
+	 *
+	 * @param   null|string  $component              The name of the component. Leave empty for automatic detection.
+	 * @param   array        $additionalPermissions  Any additional permissions you want to add to the object.
+	 *
+	 * @return  object
+	 */
+	protected function getPermissions($component = null, array $additionalPermissions = [])
+	{
+		// Make sure we have a component
+		if (empty($component))
+		{
+			$component = $this->container->componentName;
+		}
+
+		// Initialise with all true
+		$permissions = [
+			'create'    => true,
+			'edit'      => true,
+			'editown'   => true,
+			'editstate' => true,
+			'delete'    => true,
+		];
+
+		if (!empty($additionalPermissions))
+		{
+			foreach ($additionalPermissions as $localKey => $joomlaPermission)
+			{
+				$permissions[$localKey] = true;
+			}
+		}
+
+		$platform = $this->container->platform;
+
+		// If this is a CLI application we don't make any ACL checks
+		if ($platform->isCli())
+		{
+			return (object) $permissions;
+		}
+
+		// Get the core permissions
+		$permissions = [
+			'create'    => $platform->authorise('core.create', $component),
+			'edit'      => $platform->authorise('core.edit', $component),
+			'editown'   => $platform->authorise('core.edit.own', $component),
+			'editstate' => $platform->authorise('core.edit.state', $component),
+			'delete'    => $platform->authorise('core.delete', $component),
+		];
+
+		if (!empty($additionalPermissions))
+		{
+			foreach ($additionalPermissions as $localKey => $joomlaPermission)
+			{
+				$permissions[$localKey] = $platform->authorise($joomlaPermission, $component);
+			}
+		}
+
+		return (object) $permissions;
+	}
+
+	/**
+	 * Executes before rendering the page for the Browse task.
+	 */
+	protected function onBeforeBrowse()
+	{
+		// Create the lists object
+		$this->lists = new stdClass();
+
+		// Load the model
+		/** @var DataModel $model */
+		$model = $this->getModel();
+
+		// We want to persist the state in the session
+		$model->savestate(1);
+
+		// Display limits
+		$defaultLimit = 20;
+
+		if (!$this->container->platform->isCli() && class_exists('JFactory'))
+		{
+			$app = Factory::getApplication();
+
+			if (method_exists($app, 'get'))
+			{
+				$defaultLimit = $app->get('list_limit');
+			}
+			else
+			{
+				$defaultLimit = 20;
+			}
+		}
+
+		$this->lists->limitStart = $model->getState('limitstart', 0, 'int');
+		$this->lists->limit      = $model->getState('limit', $defaultLimit, 'int');
+
+		$model->limitstart = $this->lists->limitStart;
+		$model->limit      = $this->lists->limit;
+
+		// Assign items to the view
+		$this->items     = $model->get(false);
+		$this->itemCount = $model->count();
+
+		// Ordering information
+		$this->lists->order     = $model->getState('filter_order', $model->getIdFieldName(), 'cmd');
+		$this->lists->order_Dir = $model->getState('filter_order_Dir', null, 'cmd');
+
+		if ($this->lists->order_Dir)
+		{
+			$this->lists->order_Dir = strtolower($this->lists->order_Dir);
+		}
+
+		// Pagination
+		$this->pagination = new Pagination($this->itemCount, $this->lists->limitStart, $this->lists->limit);
+
+		// Pass page params on frontend only
+		if ($this->container->platform->isFrontend())
+		{
+			/** @var SiteApplication $app */
+			$app              = Factory::getApplication();
+			$params           = $app->getParams();
+			$this->pageParams = $params;
+		}
+	}
+
+	/**
+	 * Executes before rendering the page for the add task.
+	 */
+	protected function onBeforeAdd()
+	{
+		/** @var DataModel $model */
+		$model = $this->getModel();
+
+		/**
+		 * The model is pushed into the View by the Controller. As you can see in DataController::add() it is possible
+		 * to push both default values (defaultsForAdd) as well as data from the state (e.g. when saving a new record
+		 * failed for some reason and the user needs to edit it). That's why we populate defaultFields from $model. We
+		 * still do a full reset on a clone of the Model to get a clean object and merge default values (instead of null
+		 * values) with the data pushed by the controller.
+		 */
+		$defaultFields = $model->getData();
+		$this->item    = $model->getClone()->reset(true, true);
+
+		foreach ($defaultFields as $k => $v)
+		{
+			try
+			{
+				$this->item->setFieldValue($k, $v);
+			}
+			catch (Exception $e)
+			{
+				// Suppress errors in field assignments at this stage
+			}
+		}
+	}
+
+	/**
+	 * Executes before rendering the page for the Edit task.
+	 */
+	protected function onBeforeEdit()
+	{
+		/** @var DataModel $model */
+		$model = $this->getModel();
+
+		// It seems that I can't edit records, maybe I can edit only this one due asset tracking?
+		if (!$this->permissions->edit || !$this->permissions->editown)
+		{
+			if ($model)
+			{
+				// Ok, record is tracked, let's see if I can this record
+				if ($model->isAssetsTracked())
+				{
+					$platform = $this->container->platform;
+
+					if (!$this->permissions->edit)
+					{
+						$this->permissions->edit = $platform->authorise('core.edit', $model->getAssetName());
+					}
+
+					if (!$this->permissions->editown)
+					{
+						$this->permissions->editown = $platform->authorise('core.edit.own', $model->getAssetName());
+					}
+				}
+			}
+		}
+
+		$this->item = $model->findOrFail();
+	}
+
+	/**
+	 * Executes before rendering the page for the Read task.
+	 */
+	protected function onBeforeRead()
+	{
+		/** @var DataModel $model */
+		$model = $this->getModel();
+
+		$this->item = $model->findOrFail();
+	}
+}

libraries/fof30/View/Engine/AbstractEngine.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Engine;
+
+defined('_JEXEC') || die;
+
+use FOF30\View\View;
+
+abstract class AbstractEngine implements EngineInterface
+{
+	/** @var   View  The view we belong to */
+	protected $view = null;
+
+	/**
+	 * Public constructor
+	 *
+	 * @param   View  $view  The view we belong to
+	 */
+	public function __construct(View $view)
+	{
+		$this->view = $view;
+	}
+
+	/**
+	 * Get the include path for a parsed view template
+	 *
+	 * @param   string  $path         The path to the view template
+	 * @param   array   $forceParams  Any additional information to pass to the view template engine
+	 *
+	 * @return  array  Content 3ναlυα+ιοη information (I use leetspeak here because of bad quality hosts with broken
+	 *                 scanners)
+	 */
+	public function get($path, array $forceParams = [])
+	{
+		return [
+			'type'    => 'raw',
+			'content' => '',
+		];
+	}
+}

libraries/fof30/View/Engine/BladeEngine.php

@@ -0,0 +1,26 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Engine;
+
+defined('_JEXEC') || die;
+
+use FOF30\View\View;
+
+/**
+ * View engine for compiling PHP template files.
+ */
+class BladeEngine extends CompilingEngine implements EngineInterface
+{
+	public function __construct(View $view)
+	{
+		parent::__construct($view);
+
+		// Assign the Blade compiler to this engine
+		$this->compiler = $view->getContainer()->blade;
+	}
+}

libraries/fof30/View/Engine/CompilingEngine.php

@@ -0,0 +1,273 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Engine;
+
+defined('_JEXEC') || die;
+
+use FOF30\Utils\Buffer;
+use FOF30\View\Compiler\CompilerInterface;
+use FOF30\View\Exception\PossiblySuhosin;
+use JLoader;
+use Joomla\CMS\Filesystem\File;
+
+/**
+ * View engine for compiling PHP template files.
+ */
+abstract class CompilingEngine extends AbstractEngine implements EngineInterface
+{
+	/** @var  CompilerInterface  The compiler used by this engine */
+	protected $compiler = null;
+
+	/**
+	 * Get the 3ναlυa+3d contents of the view template. (I use leetspeak here because of bad quality hosts with broken
+	 * scanners)
+	 *
+	 * @param   string  $path         The path to the view template
+	 * @param   array   $forceParams  Any additional information to pass to the view template engine
+	 *
+	 * @return  array  Content evaluation information
+	 */
+	public function get($path, array $forceParams = [])
+	{
+		// If it's cached return the path to the cached file's path
+		if ($this->isCached($path))
+		{
+			return [
+				'type'    => 'path',
+				'content' => $this->getCachePath($path),
+			];
+		}
+
+		/**
+		 * Compile and cache the file. We also add the file path in a comment at the top of the file so phpStorm can
+		 * debug it.
+		 *
+		 * @see https://blog.jetbrains.com/phpstorm/2019/02/phpstorm-2019-1-eap-191-5849-26/
+		 * @see https://laravel-news.com/laravel-5-8-blade-template-file-path
+		 */
+		$content   = "<?php /* $path */ ?>\n";
+		$content   .= $this->compile($path, $forceParams);
+		$cachePath = $this->putToCache($path, $content);
+		$isPHPFile = substr($path, -4) == '.php';
+
+		// If we could cache it, return the cached file's path
+		if ($cachePath !== false)
+		{
+			// Bust the opcode cache for .php files
+			if ($isPHPFile)
+			{
+				$this->bustOpCache($path);
+			}
+
+			return [
+				'type'    => 'path',
+				'content' => $cachePath,
+			];
+		}
+
+		// We could not write to the cache. Hm, can I use a stream wrapper?
+		$canUseStreams = Buffer::canRegisterWrapper();
+
+		if ($canUseStreams)
+		{
+			$id         = $this->getIdentifier($path);
+			$streamPath = 'fof://' . $this->view->getContainer()->componentName . '/compiled_templates/' . $id . '.php';
+			file_put_contents($streamPath, $content);
+
+			// Bust the opcode cache for .php files
+			if ($isPHPFile)
+			{
+				$this->bustOpCache($path);
+			}
+
+			return [
+				'type'    => 'path',
+				'content' => $streamPath,
+			];
+		}
+
+		// I couldn't use a stream wrapper. I have to give up.
+		throw new PossiblySuhosin;
+	}
+
+	/**
+	 * Returns the path where I can find a precompiled version of the unprocessed view template which lives in $path
+	 *
+	 * @param   string  $path  The path to the uncompiled view template
+	 *
+	 * @return  bool|string  False if the view template is outside the component's front- or backend.
+	 *
+	 * @since   3.3.1
+	 */
+	public function getPrecompiledPath($path)
+	{
+		// Normalize the path to the file
+		$path = realpath($path);
+
+		if ($path === false)
+		{
+			// The file doesn't exist
+			return false;
+		}
+
+		// Is this path under the component's front- or backend?
+		$frontendPath = realpath($this->view->getContainer()->frontEndPath);
+		$backendPath  = realpath($this->view->getContainer()->backEndPath);
+
+		$backPos  = strpos($path, $backendPath);
+		$frontPos = strpos($path, $frontendPath);
+
+		if (($backPos !== 0) && ($frontPos !== 0))
+		{
+			// This is not a view template shipped with the component, i.e. it can't be precompiled
+			return false;
+		}
+
+		// Eliminate the component path from $path to get the relative path to the file
+		$componentPath = $frontendPath;
+
+		if ($backPos === 0)
+		{
+			$componentPath = $backendPath;
+		}
+
+		$relativePath = ltrim(substr($path, strlen($componentPath)), '\\/');
+
+		// Break down the relative path to its parts
+		$relativePath = str_replace('\\', '/', $relativePath);
+		$pathParts    = explode('/', $relativePath);
+
+		// Remove the prefix
+		$prefix = array_shift($pathParts);
+
+		// If it's a legacy view, View, Views, or views prefix remove the 'tmpl' part
+		if ($prefix != 'ViewTemplates')
+		{
+			unset($pathParts[1]);
+		}
+
+		// Get the last part and process the extension
+		$viewFile            = array_pop($pathParts);
+		$extensionWithoutDot = $this->compiler->getFileExtension();
+		$pathParts[]         = substr($viewFile, 0, -strlen($extensionWithoutDot)) . 'php';
+
+		$precompiledRelativePath = implode(DIRECTORY_SEPARATOR, $pathParts);
+
+		return $componentPath . DIRECTORY_SEPARATOR . 'PrecompiledTemplates' . DIRECTORY_SEPARATOR . $precompiledRelativePath;
+	}
+
+	/**
+	 * A method to compile the raw view template into valid PHP
+	 *
+	 * @param   string  $path         The path to the view template
+	 * @param   array   $forceParams  Any additional information to pass to the view template compiler
+	 *
+	 * @return  string  The template compiled to executable PHP
+	 */
+	protected function compile($path, array $forceParams = [])
+	{
+		return $this->compiler->compile($path, $forceParams);
+	}
+
+	protected function getIdentifier($path)
+	{
+		if (function_exists('sha1'))
+		{
+			return sha1($path);
+		}
+
+		return md5($path);
+	}
+
+	protected function getCachePath($path)
+	{
+		$id = $this->getIdentifier($path);
+
+		return JPATH_CACHE . '/' . $this->view->getContainer()->componentName . '/compiled_templates/' . $id . '.php';
+	}
+
+	protected function isCached($path)
+	{
+		if (!$this->compiler->isCacheable())
+		{
+			return false;
+		}
+
+		$cachePath = $this->getCachePath($path);
+
+		if (!file_exists($cachePath))
+		{
+			return false;
+		}
+
+		$cacheTime = filemtime($cachePath);
+		$fileTime  = filemtime($path);
+
+		return $fileTime <= $cacheTime;
+	}
+
+	protected function getCached($path)
+	{
+		$cachePath = $this->getCachePath($path);
+
+		return file_get_contents($cachePath);
+	}
+
+	protected function putToCache($path, $content)
+	{
+		$cachePath = $this->getCachePath($path);
+
+		if (@file_put_contents($cachePath, $content))
+		{
+			return $cachePath;
+		}
+
+		if (File::write($cachePath, $content))
+		{
+			return $cachePath;
+		}
+
+		return false;
+	}
+
+	/**
+	 * Bust the opcode cache for a given .php file
+	 *
+	 * This method can address opcode caching with:
+	 * - Zend OPcache
+	 * - Alternative PHP Cache (now defunct)
+	 * - Windows Cache Extension for PHP (versions lower than 2.0.0)
+	 * - XCache (now defunct)
+	 *
+	 * @param   string  $path  The file to bus the cache for
+	 *
+	 * @return  void
+	 */
+	private function bustOpCache($path)
+	{
+		if (function_exists('opcache_invalidate'))
+		{
+			opcache_invalidate($path);
+		}
+
+		if (function_exists('apc_compile_file'))
+		{
+			apc_compile_file($path);
+		}
+
+		if (function_exists('wincache_refresh_if_changed'))
+		{
+			wincache_refresh_if_changed([$path]);
+		}
+
+		if (function_exists('xcache_asm'))
+		{
+			xcache_asm($path);
+		}
+	}
+}

libraries/fof30/View/Engine/EngineInterface.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Engine;
+
+defined('_JEXEC') || die;
+
+use FOF30\View\View;
+
+interface EngineInterface
+{
+	/**
+	 * Public constructor
+	 *
+	 * @param   View  $view  The view we belong to
+	 */
+	public function __construct(View $view);
+
+	/**
+	 * Get the include path for a parsed view template
+	 *
+	 * @param   string  $path         The path to the view template
+	 * @param   array   $forceParams  Any additional information to pass to the view template engine
+	 *
+	 * @return  array  Content 3ναlυα+ιοη information ['type' => 'raw|path', 'content' => 'path or raw content'] (I use
+	 *                 leetspeak here because of bad quality hosts with broken scanners)
+	 */
+	public function get($path, array $forceParams = []);
+}

libraries/fof30/View/Engine/PhpEngine.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Engine;
+
+defined('_JEXEC') || die;
+
+/**
+ * View engine for plain PHP template files (no translation).
+ */
+class PhpEngine extends AbstractEngine implements EngineInterface
+{
+	/**
+	 * Get the 3ναluα+3d contents of the view template. (I use leetspeak here because of bad quality hosts with broken
+	 * scanners)
+	 *
+	 * @param   string  $path         The path to the view template
+	 * @param   array   $forceParams  Any additional information to pass to the view template engine
+	 *
+	 * @return  array  Content 3ναlυα+ιοη information (I use leetspeak here because of asshole hosts with broken
+	 *                 scanners)
+	 */
+	public function get($path, array $forceParams = [])
+	{
+		return [
+			'type'    => 'path',
+			'content' => $path,
+		];
+	}
+}

libraries/fof30/View/Exception/AccessForbidden.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Exception;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use Joomla\CMS\Language\Text;
+use RuntimeException;
+
+/**
+ * Exception thrown when the access to the requested resource is forbidden under the current execution context
+ */
+class AccessForbidden extends RuntimeException
+{
+	public function __construct($message = "", $code = 403, Exception $previous = null)
+	{
+		if (empty($message))
+		{
+			$message = Text::_('JLIB_APPLICATION_ERROR_ACCESS_FORBIDDEN');
+		}
+
+		parent::__construct($message, $code, $previous);
+	}
+
+}

libraries/fof30/View/Exception/CannotGetName.php

@@ -0,0 +1,30 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Exception;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use Joomla\CMS\Language\Text;
+use RuntimeException;
+
+/**
+ * Exception thrown when we can't get a Controller's name
+ */
+class CannotGetName extends RuntimeException
+{
+	public function __construct($message = "", $code = 500, Exception $previous = null)
+	{
+		if (empty($message))
+		{
+			$message = Text::_('LIB_FOF_VIEW_ERR_GET_NAME');
+		}
+
+		parent::__construct($message, $code, $previous);
+	}
+}

libraries/fof30/View/Exception/EmptyStack.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Exception;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use Joomla\CMS\Language\Text;
+use RuntimeException;
+
+/**
+ * Exception thrown when we are trying to operate on an empty section stack
+ */
+class EmptyStack extends RuntimeException
+{
+	public function __construct($message = "", $code = 500, Exception $previous = null)
+	{
+		$message = Text::_('LIB_FOF_VIEW_EMPTYSECTIONSTACK');
+
+		parent::__construct($message, $code, $previous);
+	}
+}

libraries/fof30/View/Exception/ModelNotFound.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Exception;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use Joomla\CMS\Language\Text;
+use RuntimeException;
+
+/**
+ * Exception thrown when we can't get a Controller's name
+ */
+class ModelNotFound extends RuntimeException
+{
+	public function __construct($path, $viewName, $code = 500, Exception $previous = null)
+	{
+		$message = Text::sprintf('LIB_FOF_VIEW_MODELNOTINVIEW', $path, $viewName);
+
+		parent::__construct($message, $code, $previous);
+	}
+}

libraries/fof30/View/Exception/PossiblySuhosin.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Exception;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use Joomla\CMS\Language\Text;
+use RuntimeException;
+
+/**
+ * Exception thrown when the access to the requested resource is forbidden under the current execution context
+ */
+class PossiblySuhosin extends RuntimeException
+{
+	public function __construct($message = "", $code = 403, Exception $previous = null)
+	{
+		if (empty($message))
+		{
+			$message = Text::_('LIB_FOF_VIEW_POSSIBLYSUHOSIN');
+		}
+
+		parent::__construct($message, $code, $previous);
+	}
+
+}

libraries/fof30/View/Exception/UnrecognisedExtension.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View\Exception;
+
+defined('_JEXEC') || die;
+
+use Exception;
+use InvalidArgumentException;
+use Joomla\CMS\Language\Text;
+
+/**
+ * Exception thrown when we can't figure out which engine to use for a view template
+ */
+class UnrecognisedExtension extends InvalidArgumentException
+{
+	public function __construct($path, $code = 500, Exception $previous = null)
+	{
+		$message = Text::sprintf('LIB_FOF_VIEW_UNRECOGNISEDEXTENSION', $path);
+
+		parent::__construct($message, $code, $previous);
+	}
+}

libraries/fof30/View/ViewTemplateFinder.php

@@ -0,0 +1,603 @@
+<?php
+/**
+ * @package   FOF
+ * @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 2, or later
+ */
+
+namespace FOF30\View;
+
+defined('_JEXEC') || die;
+
+use FOF30\Container\Container;
+use Joomla\CMS\Language\Text;
+use RuntimeException;
+
+/**
+ * Locates the appropriate template file for a view
+ */
+class ViewTemplateFinder
+{
+	/** @var  View  The view we are attached to */
+	protected $view;
+
+	/** @var  Container  The container of the view, for quick reference */
+	protected $container;
+
+	/** @var  array  The layout template extensions to look for */
+	protected $extensions = ['.blade.php', '.php'];
+
+	/** @var  string  Default layout's name (default: "default") */
+	protected $defaultLayout = 'default';
+
+	/** @var  string  Default subtemplate name (default: empty) */
+	protected $defaultTpl = '';
+
+	/** @var  bool  Should I only look in the specified view (true) or also the pluralised/singularised (false) */
+	protected $strictView = true;
+
+	/** @var  bool  Should I only look for the defined subtemplate or also no subtemplate? */
+	protected $strictTpl = true;
+
+	/** @var  bool  Should  Should I only look for this layout or also the default layout? */
+	protected $strictLayout = true;
+
+	/** @var  string  Which application side prefix should I use by default (site, admin, auto, any) */
+	protected $sidePrefix = 'auto';
+
+	/**
+	 * Public constructor. The config array can contain the following keys
+	 * extensions       array
+	 * defaultLayout    string
+	 * defaultTpl       string
+	 * strictView       bool
+	 * strictTpl        bool
+	 * strictLayout     bool
+	 * sidePrefix       string
+	 * For the descriptions of each key please see the same-named property of this class
+	 *
+	 * @param   View   $view    The view we are attached to
+	 * @param   array  $config  The configuration for this view template finder
+	 */
+	function __construct(View $view, array $config = [])
+	{
+		$this->view      = $view;
+		$this->container = $view->getContainer();
+
+		if (isset($config['extensions']))
+		{
+			if (!is_array($config['extensions']))
+			{
+				$config['extensions'] = trim($config['extensions']);
+				$config['extensions'] = explode(',', $config['extensions']);
+				$config['extensions'] = array_map(function ($x) {
+					return trim($x);
+				}, $config['extensions']);
+			}
+
+			$this->setExtensions($config['extensions']);
+		}
+
+		if (isset($config['defaultLayout']))
+		{
+			$this->setDefaultLayout($config['defaultLayout']);
+		}
+
+		if (isset($config['defaultTpl']))
+		{
+			$this->setDefaultTpl($config['defaultTpl']);
+		}
+
+		if (isset($config['strictView']))
+		{
+			$config['strictView'] = in_array($config['strictView'], [true, 'true', 'yes', 'on', 1]);
+
+			$this->setStrictView($config['strictView']);
+		}
+
+		if (isset($config['strictTpl']))
+		{
+			$config['strictTpl'] = in_array($config['strictTpl'], [true, 'true', 'yes', 'on', 1]);
+
+			$this->setStrictTpl($config['strictTpl']);
+		}
+
+		if (isset($config['strictLayout']))
+		{
+			$config['strictLayout'] = in_array($config['strictLayout'], [true, 'true', 'yes', 'on', 1]);
+
+			$this->setStrictLayout($config['strictLayout']);
+		}
+
+		if (isset($config['sidePrefix']))
+		{
+			$this->setSidePrefix($config['sidePrefix']);
+		}
+	}
+
+	/**
+	 * Returns a list of template URIs for a specific component, view, template and sub-template. The $parameters array
+	 * can have any of the following keys:
+	 * component        string  The name of the component, e.g. com_something
+	 * view             string  The name of the view
+	 * layout           string  The name of the layout
+	 * tpl              string  The name of the subtemplate
+	 * strictView       bool    Should I only look in the specified view, or should I look in the
+	 * pluralised/singularised view as well? strictLayout     bool    Should I only look for this layout, or also for
+	 * the default layout? strictTpl        bool    Should I only look for this subtemplate or also for no subtemplate?
+	 * sidePrefix       string  The application side prefix (site, admin, auto, any)
+	 *
+	 * @param   array  $parameters  See above
+	 *
+	 * @return  array
+	 */
+	public function getViewTemplateUris(array $parameters)
+	{
+		// Merge the default parameters with the parameters given
+		$parameters = array_merge([
+			'component'    => $this->container->componentName,
+			'view'         => $this->view->getName(),
+			'layout'       => $this->defaultLayout,
+			'tpl'          => $this->defaultTpl,
+			'strictView'   => $this->strictView,
+			'strictLayout' => $this->strictLayout,
+			'strictTpl'    => $this->strictTpl,
+			'sidePrefix'   => $this->sidePrefix,
+		], $parameters);
+
+		$uris = [];
+
+		$component    = $parameters['component'];
+		$view         = $parameters['view'];
+		$layout       = $parameters['layout'];
+		$tpl          = $parameters['tpl'];
+		$strictView   = $parameters['strictView'];
+		$strictLayout = $parameters['strictLayout'];
+		$strictTpl    = $parameters['strictTpl'];
+		$sidePrefix   = $parameters['sidePrefix'];
+
+		$basePath = $sidePrefix . ':' . $component . '/' . $view . '/';
+
+		$uris[] = $basePath . $layout . ($tpl ? "_$tpl" : '');
+
+		if (!$strictTpl)
+		{
+			$uris[] = $basePath . $layout;
+		}
+
+		if (!$strictLayout)
+		{
+			$uris[] = $basePath . 'default' . ($tpl ? "_$tpl" : '');
+
+			if (!$strictTpl)
+			{
+				$uris[] = $basePath . 'default';
+			}
+		}
+
+		if (!$strictView)
+		{
+			$parameters['view']       = $this->container->inflector->isSingular($view) ? $this->container->inflector->pluralize($view) : $this->container->inflector->singularize($view);
+			$parameters['strictView'] = true;
+
+			$extraUris = $this->getViewTemplateUris($parameters);
+			$uris      = array_merge($uris, $extraUris);
+			unset ($extraUris);
+		}
+
+		return array_unique($uris);
+	}
+
+	/**
+	 * Parses a template URI in the form of admin:component/view/layout to an array listing the application section
+	 * (admin, site), component, view and template referenced therein.
+	 *
+	 * @param   string  $uri  The template path to parse
+	 *
+	 * @return  array  A hash array with the parsed path parts. Keys: admin, component, view, template
+	 */
+	public function parseTemplateUri($uri = '')
+	{
+		$parts = [
+			'admin'     => 0,
+			'component' => $this->container->componentName,
+			'view'      => $this->view->getName(),
+			'template'  => 'default',
+		];
+
+		if (substr($uri, 0, 5) == 'auto:')
+		{
+			$replacement = $this->container->platform->isBackend() ? 'admin:' : 'site:';
+			$uri         = $replacement . substr($uri, 5);
+		}
+
+		if (substr($uri, 0, 6) == 'admin:')
+		{
+			$parts['admin'] = 1;
+			$uri            = substr($uri, 6);
+		}
+		elseif (substr($uri, 0, 5) == 'site:')
+		{
+			$uri = substr($uri, 5);
+		}
+		elseif (substr($uri, 0, 4) == 'any:')
+		{
+			$parts['admin'] = -1;
+			$uri            = substr($uri, 4);
+		}
+
+		if (empty($uri))
+		{
+			return $parts;
+		}
+
+		$uriParts  = explode('/', $uri, 3);
+		$partCount = count($uriParts);
+
+		if ($partCount >= 1)
+		{
+			$parts['component'] = $uriParts[0];
+		}
+
+		if ($partCount >= 2)
+		{
+			$parts['view'] = $uriParts[1];
+		}
+
+		if ($partCount >= 3)
+		{
+			$parts['template'] = $uriParts[2];
+		}
+
+		return $parts;
+	}
+
+	/**
+	 * Resolves a view template URI (e.g. any:com_foobar/Items/cheese) to an absolute filesystem path
+	 * (e.g. /var/www/html/administrator/components/com_foobar/View/Items/tmpl/cheese.php)
+	 *
+	 * @param   string  $uri             The view template URI to parse
+	 * @param   string  $layoutTemplate  The layout template override of the View class
+	 * @param   array   $extraPaths      Any extra lookup paths where we'll be looking for this view template
+	 * @param   bool    $noOverride      If true we will not load Joomla! template overrides
+	 *
+	 * @return  string
+	 *
+	 * @throws RuntimeException
+	 */
+	public function resolveUriToPath($uri, $layoutTemplate = '', array $extraPaths = [], $noOverride = false)
+	{
+		// Parse the URI into its parts
+		$parts = $this->parseTemplateUri($uri);
+
+		// Get some useful values
+		$isAdmin        = $this->container->platform->isBackend() ? 1 : 0;
+		$componentPaths = $this->container->platform->getComponentBaseDirs($parts['component']);
+		$templatePath   = $this->container->platform->getTemplateOverridePath($parts['component']);
+
+		// Get the lookup paths
+		$paths = [];
+
+		// If we are on the correct side of the application or we have an "any:" URI look for a template override
+		if (!$noOverride && (($parts['admin'] == -1) || ($parts['admin'] == $isAdmin)))
+		{
+			$paths[] = $templatePath . '/' . $parts['view'];
+		}
+
+		// Add the requested side of the application
+		$requestedAdmin = ($parts['admin'] == -1) ? $isAdmin : $parts['admin'];
+
+		$paths[] = ($requestedAdmin ? $componentPaths['admin'] : $componentPaths['site']) . '/ViewTemplates/' . $parts['view'];
+		$paths[] = ($requestedAdmin ? $componentPaths['admin'] : $componentPaths['site']) . '/View/' . $parts['view'] . '/tmpl';
+
+		// Add the other side of the application for "any:" URIs
+		if ($parts['admin'] == -1)
+		{
+			$paths[] = ($requestedAdmin ? $componentPaths['site'] : $componentPaths['admin']) . '/ViewTemplates/' . $parts['view'];
+			$paths[] = ($requestedAdmin ? $componentPaths['site'] : $componentPaths['admin']) . '/View/' . $parts['view'] . '/tmpl';
+		}
+
+		// Add extra paths
+		if (!empty($extraPaths))
+		{
+			$paths = array_merge($paths, $extraPaths);
+		}
+
+		// Remove duplicate paths
+		$paths = array_unique($paths);
+
+		// Look for a template layout override
+		if (!empty($layoutTemplate) && ($layoutTemplate != '_') && ($layoutTemplate != $parts['template']))
+		{
+			$apath = array_shift($paths);
+			array_unshift($paths, str_replace($parts['template'], $layoutTemplate, $apath));
+		}
+
+		// Get the Joomla! version template suffixes
+		$jVersionSuffixes = array_merge($this->container->platform->getTemplateSuffixes(), ['']);
+
+		// Get the renderer name suffixes
+		$rendererNameSuffixes = [
+			'.' . $this->container->renderer->getInformation()->name,
+			'',
+		];
+
+		$filesystem = $this->container->filesystem;
+
+		foreach ($this->extensions as $extension)
+		{
+			foreach ($jVersionSuffixes as $JVersionSuffix)
+			{
+				foreach ($rendererNameSuffixes as $rendererNameSuffix)
+				{
+					$filenameToFind = $parts['template'] . $JVersionSuffix . $rendererNameSuffix . $extension;
+
+					$fileName = $filesystem->pathFind($paths, $filenameToFind);
+
+					if ($fileName)
+					{
+						return $fileName;
+					}
+				}
+			}
+		}
+
+		/**
+		 * If no view template was found for the component fall back to FOF's core Blade templates -- located in
+		 * <libdir>/ViewTemplates/<viewName>/<templateName> -- and their template overrides.
+		 */
+		$paths   = [];
+		$paths[] = $this->container->platform->getTemplateOverridePath('lib_fof30') . '/' . $parts['view'];
+		$paths[] = realpath(__DIR__ . '/..') . '/ViewTemplates/' . $parts['view'];
+
+		foreach ($jVersionSuffixes as $JVersionSuffix)
+		{
+			foreach ($rendererNameSuffixes as $rendererNameSuffix)
+			{
+				$filenameToFind = $parts['template'] . $JVersionSuffix . $rendererNameSuffix . '.blade.php';
+
+				$fileName = $filesystem->pathFind($paths, $filenameToFind);
+
+				if (!empty($fileName))
+				{
+					return $fileName;
+				}
+			}
+		}
+
+		throw new RuntimeException(Text::sprintf('JLIB_APPLICATION_ERROR_LAYOUTFILE_NOT_FOUND', $uri), 500);
+	}
+
+	/**
+	 * Get the list of view template extensions
+	 *
+	 * @return  array
+	 */
+	public function getExtensions()
+	{
+		return $this->extensions;
+	}
+
+	/**
+	 * Set the list of view template extensions
+	 *
+	 * @param   array  $extensions
+	 *
+	 * @return  void
+	 */
+	public function setExtensions(array $extensions)
+	{
+		$this->extensions = $extensions;
+	}
+
+	/**
+	 * Add an extension to the list of view template extensions
+	 *
+	 * @param   string  $extension
+	 *
+	 * @return  void
+	 */
+	public function addExtension($extension)
+	{
+		if (empty($extension))
+		{
+			return;
+		}
+
+		if (substr($extension, 0, 1) != '.')
+		{
+			$extension = '.' . $extension;
+		}
+
+		if (!in_array($extension, $this->extensions))
+		{
+			$this->extensions[] = $extension;
+		}
+	}
+
+	/**
+	 * Remove an extension from the list of view template extensions
+	 *
+	 * @param   string  $extension
+	 *
+	 * @return  void
+	 */
+	public function removeExtension($extension)
+	{
+		if (empty($extension))
+		{
+			return;
+		}
+
+		if (substr($extension, 0, 1) != '.')
+		{
+			$extension = '.' . $extension;
+		}
+
+		if (!in_array($extension, $this->extensions))
+		{
+			return;
+		}
+
+		$pos = array_search($extension, $this->extensions);
+		unset ($this->extensions[$pos]);
+	}
+
+	/**
+	 * Returns the default layout name
+	 *
+	 * @return  string
+	 */
+	public function getDefaultLayout()
+	{
+		return $this->defaultLayout;
+	}
+
+	/**
+	 * Sets the default layout name
+	 *
+	 * @param   string  $defaultLayout
+	 *
+	 * @return  void
+	 */
+	public function setDefaultLayout($defaultLayout)
+	{
+		$this->defaultLayout = $defaultLayout;
+	}
+
+	/**
+	 * Returns the default subtemplate name
+	 *
+	 * @return  string
+	 */
+	public function getDefaultTpl()
+	{
+		return $this->defaultTpl;
+	}
+
+	/**
+	 * Sets the default subtemplate name
+	 *
+	 * @param   string  $defaultTpl
+	 */
+	public function setDefaultTpl($defaultTpl)
+	{
+		$this->defaultTpl = $defaultTpl;
+	}
+
+	/**
+	 * Returns the "strict view" flag. When the flag is false we will look for the view template in both the
+	 * singularised and pluralised view. If it's true we will only look for the view template in the view
+	 * specified in getViewTemplateUris.
+	 *
+	 * @return  boolean
+	 */
+	public function isStrictView()
+	{
+		return $this->strictView;
+	}
+
+	/**
+	 * Sets the "strict view" flag. When the flag is false we will look for the view template in both the
+	 * singularised and pluralised view. If it's true we will only look for the view template in the view
+	 * specified in getViewTemplateUris.
+	 *
+	 * @param   boolean  $strictView
+	 *
+	 * @return  void
+	 */
+	public function setStrictView($strictView)
+	{
+		$this->strictView = $strictView;
+	}
+
+	/**
+	 * Returns the "strict template" flag. When the flag is false we will look for a view template with or without the
+	 * subtemplate defined in getViewTemplateUris. If it's true we will only look for the subtemplate specified.
+	 *
+	 * @return boolean
+	 */
+	public function isStrictTpl()
+	{
+		return $this->strictTpl;
+	}
+
+	/**
+	 * Sets the "strict template" flag. When the flag is false we will look for a view template with or without the
+	 * subtemplate defined in getViewTemplateUris. If it's true we will only look for the subtemplate specified.
+	 *
+	 * @param   boolean  $strictTpl
+	 *
+	 * @return  void
+	 */
+	public function setStrictTpl($strictTpl)
+	{
+		$this->strictTpl = $strictTpl;
+	}
+
+	/**
+	 * Returns the "strict layout" flag. When the flag is false we will look for a view template with both the specified
+	 * and the default template name in getViewTemplateUris. When true we will only look for the specified view
+	 * template.
+	 *
+	 * @return  boolean
+	 */
+	public function isStrictLayout()
+	{
+		return $this->strictLayout;
+	}
+
+	/**
+	 * Sets the "strict layout" flag. When the flag is false we will look for a view template with both the specified
+	 * and the default template name in getViewTemplateUris. When true we will only look for the specified view
+	 * template.
+	 *
+	 * @param   boolean  $strictLayout
+	 *
+	 * @return  void
+	 */
+	public function setStrictLayout($strictLayout)
+	{
+		$this->strictLayout = $strictLayout;
+	}
+
+	/**
+	 * Returns the application side prefix which will be used by default in getViewTemplateUris. It can be one of:
+	 * site     Public front-end
+	 * admin    Administrator back-end
+	 * auto     Automatically figure out if it should be site or admin
+	 * any      First look in the current application side, then look on the other side of the application
+	 *
+	 * @return  string
+	 */
+	public function getSidePrefix()
+	{
+		return $this->sidePrefix;
+	}
+
+	/**
+	 * Sets the application side prefix which will be used by default in getViewTemplateUris. It can be one of:
+	 * site     Public front-end
+	 * admin    Administrator back-end
+	 * auto     Automatically figure out if it should be site or admin
+	 * any      First look in the current application side, then look on the other side of the application
+	 *
+	 * @param   string  $sidePrefix
+	 *
+	 * @return  void
+	 */
+	public function setSidePrefix($sidePrefix)
+	{
+		$sidePrefix = strtolower($sidePrefix);
+		$sidePrefix = trim($sidePrefix);
+
+		if (!in_array($sidePrefix, ['site', 'admin', 'auto', 'any']))
+		{
+			$sidePrefix = 'auto';
+		}
+
+		$this->sidePrefix = $sidePrefix;
+	}
+
+
+}