WebSVN – Moodle – Diff – /lib/outputlib.php

  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  * @package core
  * @category output
  */
+/** General rendering target, usually normal browser page */
+define('RENDERER_TARGET_GENERAL', 'general');
-defined('MOODLE_INTERNAL') || die();
+/** General rendering target, usually normal browser page, but with limited capacity to avoid API use */
+define('RENDERER_TARGET_MAINTENANCE', 'maintenance');
+/** Plain text rendering for CLI scripts and cron */
+define('RENDERER_TARGET_CLI', 'cli');
+/** Plain text rendering for Ajax scripts*/
+define('RENDERER_TARGET_AJAX', 'ajax');
-require_once($CFG->libdir.'/outputcomponents.php');
+/** Plain text rendering intended for sending via email */
-require_once($CFG->libdir.'/outputactions.php');
+define('RENDERER_TARGET_TEXTEMAIL', 'textemail');
-require_once($CFG->libdir.'/outputfactories.php');
-require_once($CFG->libdir.'/outputrenderers.php');
+/** Rich text html rendering intended for sending via email */
-require_once($CFG->libdir.'/outputrequirementslib.php');
+define('RENDERER_TARGET_HTMLEMAIL', 'htmlemail');
 /**
             // This only happens during install. It doesn't matter what themerev we use as long as it's positive.
             return 1;
         } else {
             return $CFG->themerev;
+        }
     } else {
         return -1;
+    }
+}
  */
 function theme_get_next_revision() {
     global $CFG;
     $next = time();
-    if (isset($CFG->themerev) and $next <= $CFG->themerev and $CFG->themerev - $next < 60*60) {
+    if (isset($CFG->themerev) && ($next <= $CFG->themerev) && (($CFG->themerev - $next) < 60 * 60)) {
         // This resolves problems when reset is requested repeatedly within 1s,
         // the < 1h condition prevents accidental switching to future dates
         // because we might not recover from it.
-        $next = $CFG->themerev+1;
+        $next = $CFG->themerev + 1;
+    }
 function theme_get_next_sub_revision_for_theme($themename) {
     global $CFG;
     $next = time();
     $current = theme_get_sub_revision_for_theme($themename);
-    if ($next <= $current and $current - $next < 60 * 60) {
+    if ($next <= $current && $current - $next < 60 * 60) {
         // This resolves problems when reset is requested repeatedly within 1s,
         // the < 1h condition prevents accidental switching to future dates
         // because we might not recover from it.
         $next = $current + 1;
 function theme_get_config_file_path($themename) {
     global $CFG;
     if (file_exists("{$CFG->dirroot}/theme/{$themename}/config.php")) {
         return "{$CFG->dirroot}/theme/{$themename}/config.php";
-    } else if (!empty($CFG->themedir) and file_exists("{$CFG->themedir}/{$themename}/config.php")) {
+    } else if (!empty($CFG->themedir) && file_exists("{$CFG->themedir}/{$themename}/config.php")) {
         return "{$CFG->themedir}/{$themename}/config.php";
     } else {
         return null;
+    }
  * @param theme_config[] $themeconfigs An array of theme_config instances.
  * @param array          $directions   Must be a subset of ['rtl', 'ltr'].
  * @param bool           $cache        Should the generated files be stored in local cache.
  * @return array         The built theme content in a multi-dimensional array of name => direction => content
  */
-function theme_build_css_for_themes($themeconfigs = [], $directions = ['rtl', 'ltr'],
+function theme_build_css_for_themes(
+    $themeconfigs = [],
+    $directions = ['rtl', 'ltr'],
+    $cache = true,
-        $cache = true, $mtraceprogress = false): array {
+    $mtraceprogress = false
+): array {
     global $CFG;
     if (empty($themeconfigs)) {
         return [];
         \cache::make('core', 'theme_usedincontext')->delete($newtheme . $oldtheme);
+    }
+}
-/**
- * This class represents the configuration variables of a Moodle theme.
- *
- * All the variables with access: public below (with a few exceptions that are marked)
- * are the properties you can set in your themes config.php file.
- *
- * There are also some methods and protected variables that are part of the inner
- * workings of Moodle's themes system. If you are just editing a themes config.php
- * file, you can just ignore those, and the following information for developers.
- *
- * Normally, to create an instance of this class, you should use the
- * {@link theme_config::load()} factory method to load a themes config.php file.
- * However, normally you don't need to bother, because moodle_page (that is, $PAGE)
+/**
- * will create one for you, accessible as $PAGE->theme.
- *
- * @copyright 2009 Tim Hunt
- * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @since Moodle 2.0
- * @package core
- * @category output
+ * Invalidate all server and client side template caches.
- */
-class theme_config {
-    /**
-     * @var string Default theme, used when requested theme not found.
-     */
-    const DEFAULT_THEME = 'boost';
-    /** The key under which the SCSS file is stored amongst the CSS files. */
-    const SCSS_KEY = '__SCSS__';
-    /**
-     * @var array You can base your theme on other themes by linking to the other theme as
-     * parents. This lets you use the CSS and layouts from the other themes
-     * (see {@link theme_config::$layouts}).
-     * That makes it easy to create a new theme that is similar to another one
-     * but with a few changes. In this themes CSS you only need to override
-     * those rules you want to change.
-     */
-    public $parents;
-    /**
-     * @var array The names of all the stylesheets from this theme that you would
-     * like included, in order. Give the names of the files without .css.
-     */
-    public $sheets = array();
-    /**
-     * @var array The names of all the stylesheets from parents that should be excluded.
-     * true value may be used to specify all parents or all themes from one parent.
-     * If no value specified value from parent theme used.
-     */
-    public $parents_exclude_sheets = null;
-    /**
-     * @var array List of plugin sheets to be excluded.
-     * If no value specified value from parent theme used.
-     */
-    public $plugins_exclude_sheets = null;
-    /**
-     * @var array List of style sheets that are included in the text editor bodies.
-     * Sheets from parent themes are used automatically and can not be excluded.
-     */
-    public $editor_sheets = array();
-    /**
-     * @var bool Whether a fallback version of the stylesheet will be used
-     * whilst the final version is generated.
-     */
-    public $usefallback = false;
-    /**
-     * @var array The names of all the javascript files this theme that you would
-     * like included from head, in order. Give the names of the files without .js.
-     */
-    public $javascripts = array();
-    /**
-     * @var array The names of all the javascript files this theme that you would
-     * like included from footer, in order. Give the names of the files without .js.
-     */
-    public $javascripts_footer = array();
-    /**
-     * @var array The names of all the javascript files from parents that should
-     * be excluded. true value may be used to specify all parents or all themes
-     * from one parent.
-     * If no value specified value from parent theme used.
-     */
-    public $parents_exclude_javascripts = null;
-    /**
-     * @var array Which file to use for each page layout.
-     *
-     * This is an array of arrays. The keys of the outer array are the different layouts.
-     * Pages in Moodle are using several different layouts like 'normal', 'course', 'home',
-     * 'popup', 'form', .... The most reliable way to get a complete list is to look at
-     * {@link http://cvs.moodle.org/moodle/theme/base/config.php?view=markup the base theme config.php file}.
-     * That file also has a good example of how to set this setting.
-     *
-     * For each layout, the value in the outer array is an array that describes
-     * how you want that type of page to look. For example
-     * <pre>
-     *   $THEME->layouts = array(
-     *       // Most pages - if we encounter an unknown or a missing page type, this one is used.
-     *       'standard' => array(
-     *           'theme' = 'mytheme',
-     *           'file' => 'normal.php',
-     *           'regions' => array('side-pre', 'side-post'),
-     *           'defaultregion' => 'side-post'
-     *       ),
-     *       // The site home page.
-     *       'home' => array(
-     *           'theme' = 'mytheme',
-     *           'file' => 'home.php',
-     *           'regions' => array('side-pre', 'side-post'),
-     *           'defaultregion' => 'side-post'
-     *       ),
-     *       // ...
-     *   );
-     * </pre>
-     *
-     * 'theme' name of the theme where is the layout located
-     * 'file' is the layout file to use for this type of page.
-     * layout files are stored in layout subfolder
-     * 'regions' This lists the regions on the page where blocks may appear. For
-     * each region you list here, your layout file must include a call to
-     * <pre>
-     *   echo $OUTPUT->blocks_for_region($regionname);
-     * </pre>
-     * or equivalent so that the blocks are actually visible.
-     *
-     * 'defaultregion' If the list of regions is non-empty, then you must pick
-     * one of the one of them as 'default'. This has two meanings. First, this is
-     * where new blocks are added. Second, if there are any blocks associated with
-     * the page, but in non-existent regions, they appear here. (Imaging, for example,
-     * that someone added blocks using a different theme that used different region
-     * names, and then switched to this theme.)
-     */
-    public $layouts = array();
-    /**
-     * @var string Name of the renderer factory class to use. Must implement the
-     * {@link renderer_factory} interface.
-     *
-     * This is an advanced feature. Moodle output is generated by 'renderers',
-     * you can customise the HTML that is output by writing custom renderers,
-     * and then you need to specify 'renderer factory' so that Moodle can find
-     * your renderers.
-     *
-     * There are some renderer factories supplied with Moodle. Please follow these
-     * links to see what they do.
-     * <ul>
-     * <li>{@link standard_renderer_factory} - the default.</li>
-     * <li>{@link theme_overridden_renderer_factory} - use this if you want to write
-     *      your own custom renderers in a lib.php file in this theme (or the parent theme).</li>
-     * </ul>
-     */
-    public $rendererfactory = 'standard_renderer_factory';
-    /**
-     * @var string Function to do custom CSS post-processing.
-     *
-     * This is an advanced feature. If you want to do custom post-processing on the
-     * CSS before it is output (for example, to replace certain variable names
-     * with particular values) you can give the name of a function here.
-     */
-    public $csspostprocess = null;
-    /**
-     * @var string Function to do custom CSS post-processing on a parsed CSS tree.
-     *
-     * This is an advanced feature. If you want to do custom post-processing on the
-     * CSS before it is output, you can provide the name of the function here. The
-     * function will receive a CSS tree document as first parameter, and the theme_config
-     * object as second parameter. A return value is not required, the tree can
-     * be edited in place.
-     */
-    public $csstreepostprocessor = null;
-    /**
-     * @var string Accessibility: Right arrow-like character is
-     * used in the breadcrumb trail, course navigation menu
-     * (previous/next activity), calendar, and search forum block.
-     * If the theme does not set characters, appropriate defaults
-     * are set automatically. Please DO NOT
-     * use &lt; &gt; &raquo; - these are confusing for blind users.
-     */
-    public $rarrow = null;
-    /**
-     * @var string Accessibility: Left arrow-like character is
-     * used in the breadcrumb trail, course navigation menu
-     * (previous/next activity), calendar, and search forum block.
-     * If the theme does not set characters, appropriate defaults
-     * are set automatically. Please DO NOT
-     * use &lt; &gt; &raquo; - these are confusing for blind users.
-     */
-    public $larrow = null;
-    /**
-     * @var string Accessibility: Up arrow-like character is used in
-     * the book heirarchical navigation.
-     * If the theme does not set characters, appropriate defaults
-     * are set automatically. Please DO NOT
-     * use ^ - this is confusing for blind users.
-     */
-    public $uarrow = null;
-    /**
-     * @var string Accessibility: Down arrow-like character.
-     * If the theme does not set characters, appropriate defaults
-     * are set automatically.
-     */
-    public $darrow = null;
-    /**
-     * @var bool Some themes may want to disable ajax course editing.
-     */
-    public $enablecourseajax = true;
-    /**
-     * @var string Determines served document types
-     *  - 'html5' the only officially supported doctype in Moodle
-     *  - 'xhtml5' may be used in development for validation (not intended for production servers!)
-     *  - 'xhtml' XHTML 1.0 Strict for legacy themes only
-     */
-    public $doctype = 'html5';
-    /**
-     * @var string|false requiredblocks If set to a string, will list the block types that cannot be deleted. Defaults to
-     *                                   navigation and settings.
-     */
-    public $requiredblocks = false;
-    //==Following properties are not configurable from theme config.php==
-    /**
-     * @var string The name of this theme. Set automatically when this theme is
-     * loaded. This can not be set in theme config.php
-     */
-    public $name;
-    /**
-     * @var string The folder where this themes files are stored. This is set
-     * automatically. This can not be set in theme config.php
-     */
-    public $dir;
-    /**
-     * @var stdClass Theme settings stored in config_plugins table.
-     * This can not be set in theme config.php
-     */
-    public $settings = null;
-    /**
-     * @var bool If set to true and the theme enables the dock then  blocks will be able
-     * to be moved to the special dock
-     */
-    public $enable_dock = false;
-    /**
-     * @var bool If set to true then this theme will not be shown in the theme selector unless
-     * theme designer mode is turned on.
-     */
-    public $hidefromselector = false;
-    /**
-     * @var array list of YUI CSS modules to be included on each page. This may be used
-     * to remove cssreset and use cssnormalise module instead.
-     */
-    public $yuicssmodules = array('cssreset', 'cssfonts', 'cssgrids', 'cssbase');
-    /**
-     * An associative array of block manipulations that should be made if the user is using an rtl language.
-     * The key is the original block region, and the value is the block region to change to.
-     * This is used when displaying blocks for regions only.
-     * @var array
-     */
-    public $blockrtlmanipulations = array();
-    /**
-     * @var renderer_factory Instance of the renderer_factory implementation
-     * we are using. Implementation detail.
-     */
-    protected $rf = null;
-    /**
-     * @var array List of parent config objects.
-     **/
-    protected $parent_configs = array();
-    /**
-     * Used to determine whether we can serve SVG images or not.
-     * @var bool
-     */
-    private $usesvg = null;
-    /**
-     * Whether in RTL mode or not.
-     * @var bool
-     */
-    protected $rtlmode = false;
-    /**
-     * The SCSS file to compile (without .scss), located in the scss/ folder of the theme.
-     * Or a Closure, which receives the theme_config as argument and must
-     * return the SCSS content.
-     * @var string|Closure
-     */
-    public $scss = false;
-    /**
-     * Local cache of the SCSS property.
-     * @var false|array
-     */
-    protected $scsscache = null;
-    /**
-     * The name of the function to call to get the SCSS code to inject.
-     * @var string
-     */
-    public $extrascsscallback = null;
-    /**
-     * The name of the function to call to get SCSS to prepend.
-     * @var string
-     */
-    public $prescsscallback = null;
-    /**
-     * Sets the render method that should be used for rendering custom block regions by scripts such as my/index.php
-     * Defaults to {@link core_renderer::blocks_for_region()}
-     * @var string
-     */
-    public $blockrendermethod = null;
-    /**
-     * Remember the results of icon remapping for the current page.
-     * @var array
-     */
-    public $remapiconcache = [];
-    /**
-     * The name of the function to call to get precompiled CSS.
-     * @var string
-     */
-    public $precompiledcsscallback = null;
-    /**
-     * Whether the theme uses course index.
-     * @var bool
-     */
-    public $usescourseindex = false;
-    /**
-     * Configuration for the page activity header
-     * @var array
-     */
-    public $activityheaderconfig = [];
-    /**
-     * For backward compatibility with old themes.
-     * BLOCK_ADDBLOCK_POSITION_DEFAULT, BLOCK_ADDBLOCK_POSITION_FLATNAV.
-     * @var int
-     */
-    public $addblockposition;
-    /**
-     * editor_scss file(s) provided by this theme.
-     * @var array
-     */
-    public $editor_scss;
-    /**
-     * Name of the class extending \core\output\icon_system.
-     * @var string
-     */
-    public $iconsystem;
-    /**
-     * Theme defines its own editing mode switch.
-     * @var bool
-     */
-    public $haseditswitch = false;
-    /**
-     * Allows a theme to customise primary navigation by specifying the list of items to remove.
-     * @var array
-     */
-    public $removedprimarynavitems = [];
-    /**
-     * Load the config.php file for a particular theme, and return an instance
-     * of this class. (That is, this is a factory method.)
-     *
-     * @param string $themename the name of the theme.
-     * @return theme_config an instance of this class.
-     */
-    public static function load($themename) {
-        global $CFG;
-        // load theme settings from db
-        try {
-            $settings = get_config('theme_'.$themename);
-        } catch (dml_exception $e) {
-            // most probably moodle tables not created yet
-            $settings = new stdClass();
-        }
-        if ($config = theme_config::find_theme_config($themename, $settings)) {
-            return new theme_config($config);
-        } else if ($themename == theme_config::DEFAULT_THEME) {
-            throw new coding_exception('Default theme '.theme_config::DEFAULT_THEME.' not available or broken!');
-        } else if ($config = theme_config::find_theme_config($CFG->theme, $settings)) {
-            debugging('This page should be using theme ' . $themename .
-                    ' which cannot be initialised. Falling back to the site theme ' . $CFG->theme, DEBUG_NORMAL);
-            return new theme_config($config);
-        } else {
-            // bad luck, the requested theme has some problems - admin see details in theme config
-            debugging('This page should be using theme ' . $themename .
-                    ' which cannot be initialised. Nor can the site theme ' . $CFG->theme .
-                    '. Falling back to ' . theme_config::DEFAULT_THEME, DEBUG_NORMAL);
-            return new theme_config(theme_config::find_theme_config(theme_config::DEFAULT_THEME, $settings));
-        }
-    }
-    /**
-     * Theme diagnostic code. It is very problematic to send debug output
-     * to the actual CSS file, instead this functions is supposed to
-     * diagnose given theme and highlights all potential problems.
-     * This information should be available from the theme selection page
-     * or some other debug page for theme designers.
-     *
-     * @param string $themename
-     * @return array description of problems
-     */
-    public static function diagnose($themename) {
-        //TODO: MDL-21108
-        return array();
-    }
-    /**
-     * Private constructor, can be called only from the factory method.
-     * @param stdClass $config
-     */
-    private function __construct($config) {
-        global $CFG; //needed for included lib.php files
-        $this->settings = $config->settings;
-        $this->name     = $config->name;
-        $this->dir      = $config->dir;
-        if ($this->name != self::DEFAULT_THEME) {
-            $baseconfig = self::find_theme_config(self::DEFAULT_THEME, $this->settings);
-        } else {
-            $baseconfig = $config;
-        }
-        // Ensure that each of the configurable properties defined below are also defined at the class level.
-        $configurable = [
-            'parents', 'sheets', 'parents_exclude_sheets', 'plugins_exclude_sheets', 'usefallback',
-            'javascripts', 'javascripts_footer', 'parents_exclude_javascripts',
-            'layouts', 'enablecourseajax', 'requiredblocks',
-            'rendererfactory', 'csspostprocess', 'editor_sheets', 'editor_scss', 'rarrow', 'larrow', 'uarrow', 'darrow',
-            'hidefromselector', 'doctype', 'yuicssmodules', 'blockrtlmanipulations', 'blockrendermethod',
-            'scss', 'extrascsscallback', 'prescsscallback', 'csstreepostprocessor', 'addblockposition',
-            'iconsystem', 'precompiledcsscallback', 'haseditswitch', 'usescourseindex', 'activityheaderconfig',
-            'removedprimarynavitems',
-        ];
-        foreach ($config as $key=>$value) {
-            if (in_array($key, $configurable)) {
-                $this->$key = $value;
-            }
-        }
-        // verify all parents and load configs and renderers
-        foreach ($this->parents as $parent) {
-            if (!$parent_config = theme_config::find_theme_config($parent, $this->settings)) {
-                // this is not good - better exclude faulty parents
-                continue;
-            }
-            $libfile = $parent_config->dir.'/lib.php';
-            if (is_readable($libfile)) {
-                // theme may store various function here
-                include_once($libfile);
-            }
-            $renderersfile = $parent_config->dir.'/renderers.php';
-            if (is_readable($renderersfile)) {
-                // may contain core and plugin renderers and renderer factory
-                include_once($renderersfile);
-            }
-            $this->parent_configs[$parent] = $parent_config;
-        }
-        $libfile = $this->dir.'/lib.php';
-        if (is_readable($libfile)) {
-            // theme may store various function here
-            include_once($libfile);
-        }
-        $rendererfile = $this->dir.'/renderers.php';
-        if (is_readable($rendererfile)) {
-            // may contain core and plugin renderers and renderer factory
-            include_once($rendererfile);
-        } else {
-            // check if renderers.php file is missnamed renderer.php
-            if (is_readable($this->dir.'/renderer.php')) {
-                debugging('Developer hint: '.$this->dir.'/renderer.php should be renamed to ' . $this->dir."/renderers.php.
-                    See: http://docs.moodle.org/dev/Output_renderers#Theme_renderers.", DEBUG_DEVELOPER);
-            }
-        }
-        // cascade all layouts properly
-        foreach ($baseconfig->layouts as $layout=>$value) {
-            if (!isset($this->layouts[$layout])) {
-                foreach ($this->parent_configs as $parent_config) {
-                    if (isset($parent_config->layouts[$layout])) {
-                        $this->layouts[$layout] = $parent_config->layouts[$layout];
-                        continue 2;
-                    }
-                }
-                $this->layouts[$layout] = $value;
-            }
-        }
-        //fix arrows if needed
-        $this->check_theme_arrows();
-    }
-    /**
-     * Let the theme initialise the page object (usually $PAGE).
-     *
-     * This may be used for example to request jQuery in add-ons.
-     *
-     * @param moodle_page $page
-     */
-    public function init_page(moodle_page $page) {
-        $themeinitfunction = 'theme_'.$this->name.'_page_init';
-        if (function_exists($themeinitfunction)) {
-            $themeinitfunction($page);
-        }
-    }
-    /**
-     * Checks if arrows $THEME->rarrow, $THEME->larrow, $THEME->uarrow, $THEME->darrow have been set (theme/-/config.php).
-     * If not it applies sensible defaults.
-     *
-     * Accessibility: right and left arrow Unicode characters for breadcrumb, calendar,
-     * search forum block, etc. Important: these are 'silent' in a screen-reader
-     * (unlike &gt; &raquo;), and must be accompanied by text.
-     */
-    private function check_theme_arrows() {
-        if (!isset($this->rarrow) and !isset($this->larrow)) {
-            // Default, looks good in Win XP/IE 6, Win/Firefox 1.5, Win/Netscape 8...
-            // Also OK in Win 9x/2K/IE 5.x
-            $this->rarrow = '&#x25BA;';
-            $this->larrow = '&#x25C4;';
-            $this->uarrow = '&#x25B2;';
-            $this->darrow = '&#x25BC;';
-            if (empty($_SERVER['HTTP_USER_AGENT'])) {
-                $uagent = '';
-            } else {
-                $uagent = $_SERVER['HTTP_USER_AGENT'];
-            }
-            if (false !== strpos($uagent, 'Opera')
-                || false !== strpos($uagent, 'Mac')) {
-                // Looks good in Win XP/Mac/Opera 8/9, Mac/Firefox 2, Camino, Safari.
-                // Not broken in Mac/IE 5, Mac/Netscape 7 (?).
-                $this->rarrow = '&#x25B6;&#xFE0E;';
-                $this->larrow = '&#x25C0;&#xFE0E;';
-            }
-            elseif ((false !== strpos($uagent, 'Konqueror'))
-                || (false !== strpos($uagent, 'Android')))  {
-                // The fonts on Android don't include the characters required for this to work as expected.
-                // So we use the same ones Konqueror uses.
-                $this->rarrow = '&rarr;';
-                $this->larrow = '&larr;';
-                $this->uarrow = '&uarr;';
-                $this->darrow = '&darr;';
-            }
-            elseif (isset($_SERVER['HTTP_ACCEPT_CHARSET'])
-                && false === stripos($_SERVER['HTTP_ACCEPT_CHARSET'], 'utf-8')) {
-                // (Win/IE 5 doesn't set ACCEPT_CHARSET, but handles Unicode.)
-                // To be safe, non-Unicode browsers!
-                $this->rarrow = '&gt;';
-                $this->larrow = '&lt;';
-                $this->uarrow = '^';
-                $this->darrow = 'v';
-            }
-            // RTL support - in RTL languages, swap r and l arrows
-            if (right_to_left()) {
-                $t = $this->rarrow;
-                $this->rarrow = $this->larrow;
-                $this->larrow = $t;
-            }
-        }
-    }
-    /**
-     * Returns output renderer prefixes, these are used when looking
-     * for the overridden renderers in themes.
-     *
-     * @return array
-     */
-    public function renderer_prefixes() {
-        global $CFG; // just in case the included files need it
-        $prefixes = array('theme_'.$this->name);
-        foreach ($this->parent_configs as $parent) {
-            $prefixes[] = 'theme_'.$parent->name;
-        }
-        return $prefixes;
-    }
-    /**
-     * Returns the stylesheet URL of this editor content
-     *
-     * @param bool $encoded false means use & and true use &amp; in URLs
-     * @return moodle_url
-     */
-    public function editor_css_url($encoded=true) {
-        global $CFG;
-        $rev = theme_get_revision();
-        $type = 'editor';
-        if (right_to_left()) {
-            $type .= '-rtl';
-        }
-        if ($rev > -1) {
-            $themesubrevision = theme_get_sub_revision_for_theme($this->name);
-            // Provide the sub revision to allow us to invalidate cached theme CSS
-            // on a per theme basis, rather than globally.
-            if ($themesubrevision && $themesubrevision > 0) {
-                $rev .= "_{$themesubrevision}";
-            }
-            $url = new moodle_url("/theme/styles.php");
-            if (!empty($CFG->slasharguments)) {
-                $url->set_slashargument("/{$this->name}/{$rev}/{$type}", 'noparam', true);
-            } else {
-                $url->params([
-                    'theme' => $this->name,
-                    'rev' => $rev,
-                    'type' => $type,
-                ]);
-            }
-        } else {
-            $url = new moodle_url('/theme/styles_debug.php', [
-                'theme' => $this->name,
-                'type' => $type,
-            ]);
-        }
-        return $url;
-    }
-    /**
-     * Returns the content of the CSS to be used in editor content
-     *
-     * @return array
-     */
-    public function editor_css_files() {
-        $files = array();
-        // First editor plugins.
-        $plugins = core_component::get_plugin_list('editor');
-        foreach ($plugins as $plugin => $fulldir) {
-            $sheetfile = "$fulldir/editor_styles.css";
-            if (is_readable($sheetfile)) {
-                $files['plugin_'.$plugin] = $sheetfile;
-            }
-            $subplugintypes = core_component::get_subplugins("editor_{$plugin}") ?? [];
-            // Fetch sheets for any editor subplugins.
-            foreach ($subplugintypes as $plugintype => $subplugins) {
-                foreach ($subplugins as $subplugin) {
-                    $plugindir = core_component::get_plugin_directory($plugintype, $subplugin);
-                    $sheetfile = "{$plugindir}/editor_styles.css";
-                    if (is_readable($sheetfile)) {
-                        $files["{$plugintype}_{$subplugin}"] = $sheetfile;
-                    }
-                }
-            }
-        }
-        // Then parent themes - base first, the immediate parent last.
-        foreach (array_reverse($this->parent_configs) as $parent_config) {
-            if (empty($parent_config->editor_sheets)) {
-                continue;
-            }
-            foreach ($parent_config->editor_sheets as $sheet) {
-                $sheetfile = "$parent_config->dir/style/$sheet.css";
-                if (is_readable($sheetfile)) {
-                    $files['parent_'.$parent_config->name.'_'.$sheet] = $sheetfile;
-                }
-            }
-        }
-        // Finally this theme.
-        if (!empty($this->editor_sheets)) {
-            foreach ($this->editor_sheets as $sheet) {
-                $sheetfile = "$this->dir/style/$sheet.css";
-                if (is_readable($sheetfile)) {
-                    $files['theme_'.$sheet] = $sheetfile;
-                }
-            }
-        }
-        return $files;
-    }
-    /**
-     * Compiles and returns the content of the SCSS to be used in editor content
-     *
-     * @return string Compiled CSS from the editor SCSS
-     */
-    public function editor_scss_to_css() {
-        $css = '';
-        $dir = $this->dir;
-        $filenames = [];
-        // Use editor_scss file(s) provided by this theme if set.
-        if (!empty($this->editor_scss)) {
-            $filenames = $this->editor_scss;
-        } else {
-            // If no editor_scss set, move up theme hierarchy until one is found (if at all).
-            // This is so child themes only need to set editor_scss if an override is required.
-            foreach (array_reverse($this->parent_configs) as $parentconfig) {
-                if (!empty($parentconfig->editor_scss)) {
-                    $dir = $parentconfig->dir;
-                    $filenames = $parentconfig->editor_scss;
-                    // Config found, stop looking.
-                    break;
-                }
-            }
-        }
-        if (!empty($filenames)) {
-            $compiler = new core_scss();
-            foreach ($filenames as $filename) {
-                $compiler->set_file("{$dir}/scss/{$filename}.scss");
-                try {
-                    $css .= $compiler->to_css();
-                } catch (\Exception $e) {
-                    debugging('Error while compiling editor SCSS: ' . $e->getMessage(), DEBUG_DEVELOPER);
-                }
-            }
-        }
-        return $css;
-    }
-    /**
-     * Get the stylesheet URL of this theme.
-     *
-     * @param moodle_page $page Not used... deprecated?
-     * @return moodle_url[]
-     */
-    public function css_urls(moodle_page $page) {
-        global $CFG;
-        $rev = theme_get_revision();
-        $urls = array();
-        $svg = $this->use_svg_icons();
-        $separate = (core_useragent::is_ie() && !core_useragent::check_ie_version('10'));
-        if ($rev > -1) {
-            $filename = right_to_left() ? 'all-rtl' : 'all';
-            $url = new moodle_url("/theme/styles.php");
-            $themesubrevision = theme_get_sub_revision_for_theme($this->name);
-            // Provide the sub revision to allow us to invalidate cached theme CSS
-            // on a per theme basis, rather than globally.
-            if ($themesubrevision && $themesubrevision > 0) {
-                $rev .= "_{$themesubrevision}";
-            }
-            if (!empty($CFG->slasharguments)) {
-                $slashargs = '';
-                if (!$svg) {
-                    // We add a simple /_s to the start of the path.
-                    // The underscore is used to ensure that it isn't a valid theme name.
-                    $slashargs .= '/_s'.$slashargs;
-                }
-                $slashargs .= '/'.$this->name.'/'.$rev.'/'.$filename;
-                if ($separate) {
-                    $slashargs .= '/chunk0';
-                }
-                $url->set_slashargument($slashargs, 'noparam', true);
-            } else {
-                $params = array('theme' => $this->name, 'rev' => $rev, 'type' => $filename);
-                if (!$svg) {
-                    // We add an SVG param so that we know not to serve SVG images.
-                    // We do this because all modern browsers support SVG and this param will one day be removed.
-                    $params['svg'] = '0';
-                }
-                if ($separate) {
-                    $params['chunk'] = '0';
-                }
-                $url->params($params);
-            }
-            $urls[] = $url;
-        } else {
-            $baseurl = new moodle_url('/theme/styles_debug.php');
-            $css = $this->get_css_files(true);
-            if (!$svg) {
-                // We add an SVG param so that we know not to serve SVG images.
-                // We do this because all modern browsers support SVG and this param will one day be removed.
-                $baseurl->param('svg', '0');
-            }
-            if (right_to_left()) {
-                $baseurl->param('rtl', 1);
-            }
-            if ($separate) {
-                // We might need to chunk long files.
-                $baseurl->param('chunk', '0');
-            }
-            if (core_useragent::is_ie()) {
-                // Lalala, IE does not allow more than 31 linked CSS files from main document.
-                $urls[] = new moodle_url($baseurl, array('theme'=>$this->name, 'type'=>'ie', 'subtype'=>'plugins'));
-                foreach ($css['parents'] as $parent=>$sheets) {
-                    // We need to serve parents individually otherwise we may easily exceed the style limit IE imposes (4096).
-                    $urls[] = new moodle_url($baseurl, array('theme'=>$this->name,'type'=>'ie', 'subtype'=>'parents', 'sheet'=>$parent));
-                }
-                if ($this->get_scss_property()) {
-                    // No need to define the type as IE here.
-                    $urls[] = new moodle_url($baseurl, array('theme' => $this->name, 'type' => 'scss'));
-                }
-                $urls[] = new moodle_url($baseurl, array('theme'=>$this->name, 'type'=>'ie', 'subtype'=>'theme'));
-            } else {
-                foreach ($css['plugins'] as $plugin=>$unused) {
-                    $urls[] = new moodle_url($baseurl, array('theme'=>$this->name,'type'=>'plugin', 'subtype'=>$plugin));
-                }
-                foreach ($css['parents'] as $parent=>$sheets) {
-                    foreach ($sheets as $sheet=>$unused2) {
-                        $urls[] = new moodle_url($baseurl, array('theme'=>$this->name,'type'=>'parent', 'subtype'=>$parent, 'sheet'=>$sheet));
-                    }
-                }
-                foreach ($css['theme'] as $sheet => $filename) {
-                    if ($sheet === self::SCSS_KEY) {
-                        // This is the theme SCSS file.
-                        $urls[] = new moodle_url($baseurl, array('theme' => $this->name, 'type' => 'scss'));
-                    } else {
-                        // Sheet first in order to make long urls easier to read.
-                        $urls[] = new moodle_url($baseurl, array('sheet'=>$sheet, 'theme'=>$this->name, 'type'=>'theme'));
-                    }
-                }
-            }
-        }
-        // Allow themes to change the css url to something like theme/mytheme/mycss.php.
-        component_callback('theme_' . $this->name, 'alter_css_urls', [&$urls]);
-        return $urls;
-    }
-    /**
-     * Get the whole css stylesheet for production mode.
-     *
-     * NOTE: this method is not expected to be used from any addons.
-     *
-     * @return string CSS markup compressed
-     */
-    public function get_css_content() {
-        $csscontent = '';
-        foreach ($this->get_css_files(false) as $type => $value) {
-            foreach ($value as $identifier => $val) {
-                if (is_array($val)) {
-                    foreach ($val as $v) {
-                        $csscontent .= file_get_contents($v) . "\n";
-                    }
-                } else {
-                    if ($type === 'theme' && $identifier === self::SCSS_KEY) {
-                        // We need the content from SCSS because this is the SCSS file from the theme.
-                        if ($compiled = $this->get_css_content_from_scss(false)) {
-                            $csscontent .= $compiled;
-                        } else {
-                            // The compiler failed so default back to any precompiled css that might
-                            // exist.
-                            $csscontent .= $this->get_precompiled_css_content();
-                        }
-                    } else {
-                        $csscontent .= file_get_contents($val) . "\n";
-                    }
-                }
-            }
-        }
-        $csscontent = $this->post_process($csscontent);
-        $csscontent = core_minify::css($csscontent);
-        return $csscontent;
-    }
-    /**
-     * Set post processed CSS content cache.
-     *
-     * @param string $csscontent The post processed CSS content.
-     * @return bool True if the content was successfully cached.
-     */
-    public function set_css_content_cache($csscontent) {
-        $cache = cache::make('core', 'postprocessedcss');
-        $key = $this->get_css_cache_key();
-        return $cache->set($key, $csscontent);
-    }
-    /**
-     * Return whether the post processed CSS content has been cached.
-     *
-     * @return bool Whether the post-processed CSS is available in the cache.
-     */
-    public function has_css_cached_content() {
-        $key = $this->get_css_cache_key();
-        $cache = cache::make('core', 'postprocessedcss');
-        return $cache->has($key);
-    }
-    /**
-     * Return cached post processed CSS content.
-     *
-     * @return bool|string The cached css content or false if not found.
-     */
-    public function get_css_cached_content() {
-        $key = $this->get_css_cache_key();
-        $cache = cache::make('core', 'postprocessedcss');
-        return $cache->get($key);
-    }
-    /**
-     * Generate the css content cache key.
-     *
-     * @return string The post processed css cache key.
-     */
+ */
-    public function get_css_cache_key() {
-        $nosvg = (!$this->use_svg_icons()) ? 'nosvg_' : '';
-        $rtlmode = ($this->rtlmode == true) ? 'rtl' : 'ltr';
-        return $nosvg . $this->name . '_' . $rtlmode;
-    }
-    /**
-     * Get the theme designer css markup,
-     * the parameters are coming from css_urls().
-     *
-     * NOTE: this method is not expected to be used from any addons.
-     *
-     * @param string $type
-     * @param string $subtype
-     * @param string $sheet
-     * @return string CSS markup
-     */
-    public function get_css_content_debug($type, $subtype, $sheet) {
-        if ($type === 'scss') {
-            // The SCSS file of the theme is requested.
-            $csscontent = $this->get_css_content_from_scss(true);
-            if ($csscontent !== false) {
-                return $this->post_process($csscontent);
-            }
-            return '';
-        }
-        $cssfiles = array();
-        $css = $this->get_css_files(true);
-        if ($type === 'ie') {
-            // IE is a sloppy browser with weird limits, sorry.
-            if ($subtype === 'plugins') {
-                $cssfiles = $css['plugins'];
-            } else if ($subtype === 'parents') {
-                if (empty($sheet)) {
-                    // Do not bother with the empty parent here.
-                } else {
-                    // Build up the CSS for that parent so we can serve it as one file.
-                    foreach ($css[$subtype][$sheet] as $parent => $css) {
-                        $cssfiles[] = $css;
-                    }
-                }
-            } else if ($subtype === 'theme') {
-                $cssfiles = $css['theme'];
-                foreach ($cssfiles as $key => $value) {
-                    if (in_array($key, [self::SCSS_KEY])) {
-                        // Remove the SCSS file from the theme CSS files.
-                        // The SCSS files use the type 'scss', not 'ie'.
-                        unset($cssfiles[$key]);
-                    }
-                }
-            }
-        } else if ($type === 'plugin') {
-            if (isset($css['plugins'][$subtype])) {
-                $cssfiles[] = $css['plugins'][$subtype];
-            }
-        } else if ($type === 'parent') {
-            if (isset($css['parents'][$subtype][$sheet])) {
-                $cssfiles[] = $css['parents'][$subtype][$sheet];
-            }
-        } else if ($type === 'theme') {
-            if (isset($css['theme'][$sheet])) {
-                $cssfiles[] = $css['theme'][$sheet];
-            }
-        }
-        $csscontent = '';
-        foreach ($cssfiles as $file) {
-            $contents = file_get_contents($file);
-            $contents = $this->post_process($contents);
-            $comment = "/** Path: $type $subtype $sheet.' **/\n";
-            $stats = '';
-            $csscontent .= $comment.$stats.$contents."\n\n";
-        }
-        return $csscontent;
-    }
-    /**
-     * Get the whole css stylesheet for editor iframe.
-     *
-     * NOTE: this method is not expected to be used from any addons.
-     *
-     * @return string CSS markup
-     */
-    public function get_css_content_editor() {
-        $css = '';
-        $cssfiles = $this->editor_css_files();
-        // If editor has static CSS, include it.
-        foreach ($cssfiles as $file) {
-            $css .= file_get_contents($file)."\n";
-        }
-        // If editor has SCSS, compile and include it.
-        if (($convertedscss = $this->editor_scss_to_css())) {
-            $css .= $convertedscss;
-        }
-        $output = $this->post_process($css);
-        return $output;
-    }
-    /**
-     * Returns an array of organised CSS files required for this output.
-     *
-     * @param bool $themedesigner
-     * @return array nested array of file paths
-     */
-    protected function get_css_files($themedesigner) {
-        global $CFG;
-        $cache = null;
-        $cachekey = 'cssfiles';
-        if ($themedesigner) {
-            require_once($CFG->dirroot.'/lib/csslib.php');
-            // We need some kind of caching here because otherwise the page navigation becomes
-            // way too slow in theme designer mode. Feel free to create full cache definition later...
-            $cache = cache::make_from_params(cache_store::MODE_APPLICATION, 'core', 'themedesigner', array('theme' => $this->name));
-            if ($files = $cache->get($cachekey)) {
-                if ($files['created'] > time() - THEME_DESIGNER_CACHE_LIFETIME) {
-                    unset($files['created']);
-                    return $files;
-                }
-            }
-        }
-        $cssfiles = array('plugins'=>array(), 'parents'=>array(), 'theme'=>array());
-        // Get all plugin sheets.
-        $excludes = $this->resolve_excludes('plugins_exclude_sheets');
-        if ($excludes !== true) {
-            foreach (core_component::get_plugin_types() as $type=>$unused) {
-                if ($type === 'theme' || (!empty($excludes[$type]) and $excludes[$type] === true)) {
-                    continue;
-                }
-                $plugins = core_component::get_plugin_list($type);
-                foreach ($plugins as $plugin=>$fulldir) {
-                    if (!empty($excludes[$type]) and is_array($excludes[$type])
-                            and in_array($plugin, $excludes[$type])) {
-                        continue;
-                    }
-                    // Get the CSS from the plugin.
-                    $sheetfile = "$fulldir/styles.css";
-                    if (is_readable($sheetfile)) {
-                        $cssfiles['plugins'][$type.'_'.$plugin] = $sheetfile;
-                    }
-                    // Create a list of candidate sheets from parents (direct parent last) and current theme.
-                    $candidates = array();
-                    foreach (array_reverse($this->parent_configs) as $parent_config) {
-                        $candidates[] = $parent_config->name;
-                    }
-                    $candidates[] = $this->name;
-                    // Add the sheets found.
-                    foreach ($candidates as $candidate) {
-                        $sheetthemefile = "$fulldir/styles_{$candidate}.css";
-                        if (is_readable($sheetthemefile)) {
-                            $cssfiles['plugins'][$type.'_'.$plugin.'_'.$candidate] = $sheetthemefile;
-                        }
-                    }
-                }
-            }
-        }
-        // Find out wanted parent sheets.
-        $excludes = $this->resolve_excludes('parents_exclude_sheets');
-        if ($excludes !== true) {
-            foreach (array_reverse($this->parent_configs) as $parent_config) { // Base first, the immediate parent last.
-                $parent = $parent_config->name;
-                if (empty($parent_config->sheets) || (!empty($excludes[$parent]) and $excludes[$parent] === true)) {
-                    continue;
-                }
-                foreach ($parent_config->sheets as $sheet) {
-                    if (!empty($excludes[$parent]) && is_array($excludes[$parent])
-                            && in_array($sheet, $excludes[$parent])) {
-                        continue;
-                    }
-                    // We never refer to the parent LESS files.
-                    $sheetfile = "$parent_config->dir/style/$sheet.css";
-                    if (is_readable($sheetfile)) {
-                        $cssfiles['parents'][$parent][$sheet] = $sheetfile;
-                    }
-                }
-            }
-        }
-        // Current theme sheets.
-        // We first add the SCSS file because we want the CSS ones to
-        // be included after the SCSS code.
-        if ($this->get_scss_property()) {
-            $cssfiles['theme'][self::SCSS_KEY] = true;
-        }
-        if (is_array($this->sheets)) {
-            foreach ($this->sheets as $sheet) {
-                $sheetfile = "$this->dir/style/$sheet.css";
-                if (is_readable($sheetfile) && !isset($cssfiles['theme'][$sheet])) {
-                    $cssfiles['theme'][$sheet] = $sheetfile;
-                }
-            }
-        }
-        if ($cache) {
-            $files = $cssfiles;
-            $files['created'] = time();
-            $cache->set($cachekey, $files);
-        }
-        return $cssfiles;
-    }
-    /**
-     * Return the CSS content generated from the SCSS file.
-     *
-     * @param bool $themedesigner True if theme designer is enabled.
-     * @return bool|string Return false when the compilation failed. Else the compiled string.
-     */
-    protected function get_css_content_from_scss($themedesigner) {
-        global $CFG;
-        list($paths, $scss) = $this->get_scss_property();
-        if (!$scss) {
-            throw new coding_exception('The theme did not define a SCSS file, or it is not readable.');
-        }
-        // We might need more memory/time to do this, so let's play safe.
-        raise_memory_limit(MEMORY_EXTRA);
-        core_php_time_limit::raise(300);
-        // TODO: MDL-62757 When changing anything in this method please do not forget to check
-        // if the validate() method in class admin_setting_configthemepreset needs updating too.
-        $cachedir = make_localcache_directory('scsscache-' . $this->name, false);
-        $cacheoptions = [];
-        if ($themedesigner) {
-            $cacheoptions = array(
-                  'cacheDir' => $cachedir,
-                  'prefix' => 'scssphp_',
-                  'forceRefresh' => false,
-            );
-        } else {
-            if (file_exists($cachedir)) {
-                remove_dir($cachedir);
-            }
-        }
-        // Set-up the compiler.
-        $compiler = new core_scss($cacheoptions);
-        if ($this->supports_source_maps($themedesigner)) {
-            // Enable source maps.
-            $compiler->setSourceMapOptions([
-                'sourceMapBasepath' => str_replace('\\', '/', $CFG->dirroot),
-                'sourceMapRootpath' => $CFG->wwwroot . '/'
-            ]);
-            $compiler->setSourceMap($compiler::SOURCE_MAP_INLINE);
-        }
-        $compiler->prepend_raw_scss($this->get_pre_scss_code());
-        if (is_string($scss)) {
-            $compiler->set_file($scss);
-        } else {
-            $compiler->append_raw_scss($scss($this));
-            $compiler->setImportPaths($paths);
-        }
-        $compiler->append_raw_scss($this->get_extra_scss_code());
-        try {
-            // Compile!
-            $compiled = $compiler->to_css();
-        } catch (\Exception $e) {
-            $compiled = false;
-            debugging('Error while compiling SCSS: ' . $e->getMessage(), DEBUG_DEVELOPER);
-        }
-        // Try to save memory.
-        $compiler = null;
-        unset($compiler);
-        return $compiled;
-    }
-    /**
-     * Return the precompiled CSS if the precompiledcsscallback exists.
-     *
-     * @return string Return compiled css.
-     */
-    public function get_precompiled_css_content() {
-        $configs = array_reverse($this->parent_configs) + [$this];
-        $css = '';
-        foreach ($configs as $config) {
-            if (isset($config->precompiledcsscallback)) {
-                $function = $config->precompiledcsscallback;
-                if (function_exists($function)) {
-                    $css .= $function($this);
-                }
-            }
-        }
-        return $css;
-    }
-    /**
-     * Get the icon system to use.
-     *
-     * @return string
-     */
-    public function get_icon_system() {
-        // Getting all the candidate functions.
-        $system = false;
-        if (isset($this->iconsystem) && \core\output\icon_system::is_valid_system($this->iconsystem)) {
-            return $this->iconsystem;
-        }
-        foreach ($this->parent_configs as $parent_config) {
-            if (isset($parent_config->iconsystem) && \core\output\icon_system::is_valid_system($parent_config->iconsystem)) {
-                return $parent_config->iconsystem;
-            }
-        }
-        return \core\output\icon_system::STANDARD;
-    }
-    /**
-     * Return extra SCSS code to add when compiling.
-     *
-     * This is intended to be used by themes to inject some SCSS code
-     * before it gets compiled. If you want to inject variables you
-     * should use {@link self::get_scss_variables()}.
-     *
-     * @return string The SCSS code to inject.
-     */
-    public function get_extra_scss_code() {
-        $content = '';
-        // Getting all the candidate functions.
-        $candidates = array();
-        foreach (array_reverse($this->parent_configs) as $parent_config) {
-            if (!isset($parent_config->extrascsscallback)) {
-                continue;
-            }
-            $candidates[] = $parent_config->extrascsscallback;
-        }
-        if (isset($this->extrascsscallback)) {
-            $candidates[] = $this->extrascsscallback;
-        }
-        // Calling the functions.
-        foreach ($candidates as $function) {
-            if (function_exists($function)) {
-                $content .= "\n/** Extra SCSS from $function **/\n" . $function($this) . "\n";
-            }
-        }
-        return $content;
-    }
-    /**
-     * SCSS code to prepend when compiling.
-     *
-     * This is intended to be used by themes to inject SCSS code before it gets compiled.
-     *
-     * @return string The SCSS code to inject.
-     */
-    public function get_pre_scss_code() {
-        $content = '';
-        // Getting all the candidate functions.
-        $candidates = array();
-        foreach (array_reverse($this->parent_configs) as $parent_config) {
-            if (!isset($parent_config->prescsscallback)) {
-                continue;
-            }
-            $candidates[] = $parent_config->prescsscallback;
-        }
-        if (isset($this->prescsscallback)) {
-            $candidates[] = $this->prescsscallback;
-        }
-        // Calling the functions.
-        foreach ($candidates as $function) {
-            if (function_exists($function)) {
-                $content .= "\n/** Pre-SCSS from $function **/\n" . $function($this) . "\n";
-            }
-        }
-        return $content;
-    }
-    /**
-     * Get the SCSS property.
-     *
-     * This resolves whether a SCSS file (or content) has to be used when generating
-     * the stylesheet for the theme. It will look at parents themes and check the
-     * SCSS properties there.
-     *
-     * @return array|false False when SCSS is not used.
-     *         An array with the import paths, and the path to the SCSS file or Closure as second.
-     */
-    public function get_scss_property() {
-        if ($this->scsscache === null) {
-            $configs = [$this] + $this->parent_configs;
-            $scss = null;
-            foreach ($configs as $config) {
-                $path = "{$config->dir}/scss";
-                // We collect the SCSS property until we've found one.
-                if (empty($scss) && !empty($config->scss)) {
-                    $candidate = is_string($config->scss) ? "{$path}/{$config->scss}.scss" : $config->scss;
-                    if ($candidate instanceof Closure) {
-                        $scss = $candidate;
-                    } else if (is_string($candidate) && is_readable($candidate)) {
-                        $scss = $candidate;
-                    }
-                }
-                // We collect the import paths once we've found a SCSS property.
-                if ($scss && is_dir($path)) {
-                    $paths[] = $path;
-                }
-            }
-            $this->scsscache = $scss !== null ? [$paths, $scss] : false;
-        }
-        return $this->scsscache;
-    }
-    /**
-     * Generate a URL to the file that serves theme JavaScript files.
-     *
-     * If we determine that the theme has no relevant files, then we return
-     * early with a null value.
-     *
-     * @param bool $inhead true means head url, false means footer
-     * @return moodle_url|null
-     */
-    public function javascript_url($inhead) {
-        global $CFG;
-        $rev = theme_get_revision();
-        $params = array('theme'=>$this->name,'rev'=>$rev);
-        $params['type'] = $inhead ? 'head' : 'footer';
-        // Return early if there are no files to serve
-        if (count($this->javascript_files($params['type'])) === 0) {
-            return null;
-        }
-        if (!empty($CFG->slasharguments) and $rev > 0) {
-            $url = new moodle_url("/theme/javascript.php");
-            $url->set_slashargument('/'.$this->name.'/'.$rev.'/'.$params['type'], 'noparam', true);
-            return $url;
-        } else {
-            return new moodle_url('/theme/javascript.php', $params);
-        }
-    }
-    /**
-     * Get the URL's for the JavaScript files used by this theme.
-     * They won't be served directly, instead they'll be mediated through
-     * theme/javascript.php.
-     *
-     * @param string $type Either javascripts_footer, or javascripts
-     * @return array
-     */
-    public function javascript_files($type) {
-        if ($type === 'footer') {
-            $type = 'javascripts_footer';
-        } else {
-            $type = 'javascripts';
-        }
-        $js = array();
-        // find out wanted parent javascripts
-        $excludes = $this->resolve_excludes('parents_exclude_javascripts');
-        if ($excludes !== true) {
-            foreach (array_reverse($this->parent_configs) as $parent_config) { // base first, the immediate parent last
-                $parent = $parent_config->name;
-                if (empty($parent_config->$type)) {
-                    continue;
-                }
-                if (!empty($excludes[$parent]) and $excludes[$parent] === true) {
-                    continue;
-                }
-                foreach ($parent_config->$type as $javascript) {
-                    if (!empty($excludes[$parent]) and is_array($excludes[$parent])
-                        and in_array($javascript, $excludes[$parent])) {
-                        continue;
-                    }
-                    $javascriptfile = "$parent_config->dir/javascript/$javascript.js";
-                    if (is_readable($javascriptfile)) {
-                        $js[] = $javascriptfile;
-                    }
-                }
-            }
-        }
-        // current theme javascripts
-        if (is_array($this->$type)) {
-            foreach ($this->$type as $javascript) {
-                $javascriptfile = "$this->dir/javascript/$javascript.js";
-                if (is_readable($javascriptfile)) {
-                    $js[] = $javascriptfile;
-                }
-            }
-        }
-        return $js;
-    }
-    /**
-     * Resolves an exclude setting to the themes setting is applicable or the
-     * setting of its closest parent.
-     *
-     * @param string $variable The name of the setting the exclude setting to resolve
-     * @param string $default
-     * @return mixed
-     */
-    protected function resolve_excludes($variable, $default = null) {
-        $setting = $default;
-        if (is_array($this->{$variable}) or $this->{$variable} === true) {
-            $setting = $this->{$variable};
-        } else {
-            foreach ($this->parent_configs as $parent_config) { // the immediate parent first, base last
-                if (!isset($parent_config->{$variable})) {
-                    continue;
-                }
-                if (is_array($parent_config->{$variable}) or $parent_config->{$variable} === true) {
-                    $setting = $parent_config->{$variable};
-                    break;
-                }
-            }
-        }
-        return $setting;
-    }
-    /**
-     * Returns the content of the one huge javascript file merged from all theme javascript files.
-     *
-     * @param bool $type
-     * @return string
-     */
-    public function javascript_content($type) {
-        $jsfiles = $this->javascript_files($type);
-        $js = '';
-        foreach ($jsfiles as $jsfile) {
-            $js .= file_get_contents($jsfile)."\n";
-        }
-        return $js;
-    }
-    /**
-     * Post processes CSS.
-     *
-     * This method post processes all of the CSS before it is served for this theme.
-     * This is done so that things such as image URL's can be swapped in and to
-     * run any specific CSS post process method the theme has requested.
-     * This allows themes to use CSS settings.
-     *
-     * @param string $css The CSS to process.
-     * @return string The processed CSS.
-     */
-    public function post_process($css) {
-        // now resolve all image locations
-        if (preg_match_all('/\[\[pix:([a-z0-9_]+\|)?([^\]]+)\]\]/', $css, $matches, PREG_SET_ORDER)) {
-            $replaced = array();
-            foreach ($matches as $match) {
-                if (isset($replaced[$match[0]])) {
-                    continue;
-                }
-                $replaced[$match[0]] = true;
-                $imagename = $match[2];
-                $component = rtrim($match[1], '|');
-                $imageurl = $this->image_url($imagename, $component)->out(false);
-                 // we do not need full url because the image.php is always in the same dir
-                $imageurl = preg_replace('|^http.?://[^/]+|', '', $imageurl);
-                $css = str_replace($match[0], $imageurl, $css);
-            }
-        }
-        // Now resolve all font locations.
-        if (preg_match_all('/\[\[font:([a-z0-9_]+\|)?([^\]]+)\]\]/', $css, $matches, PREG_SET_ORDER)) {
-            $replaced = array();
-            foreach ($matches as $match) {
-                if (isset($replaced[$match[0]])) {
-                    continue;
-                }
-                $replaced[$match[0]] = true;
-                $fontname = $match[2];
-                $component = rtrim($match[1], '|');
-                $fonturl = $this->font_url($fontname, $component)->out(false);
-                // We do not need full url because the font.php is always in the same dir.
-                $fonturl = preg_replace('|^http.?://[^/]+|', '', $fonturl);
-                $css = str_replace($match[0], $fonturl, $css);
-            }
-        }
-        // Now resolve all theme settings or do any other postprocessing.
-        // This needs to be done before calling core parser, since the parser strips [[settings]] tags.
-        $csspostprocess = $this->csspostprocess;
-        if ($csspostprocess && function_exists($csspostprocess)) {
-            $css = $csspostprocess($css, $this);
-        }
-        // Post processing using an object representation of CSS.
-        $treeprocessor = $this->get_css_tree_post_processor();
-        $needsparsing = !empty($treeprocessor) || !empty($this->rtlmode);
-        if ($needsparsing) {
-            // We might need more memory/time to do this, so let's play safe.
-            raise_memory_limit(MEMORY_EXTRA);
-            core_php_time_limit::raise(300);
-            $parser = new core_cssparser($css);
-            $csstree = $parser->parse();
-            unset($parser);
-            if ($this->rtlmode) {
-                $this->rtlize($csstree);
-            }
-            if ($treeprocessor) {
-                $treeprocessor($csstree, $this);
-            }
-            $css = $csstree->render();
-            unset($csstree);
-        }
-        return $css;
-    }
-    /**
-     * Flip a stylesheet to RTL.
-     *
-     * @param mixed $csstree The parsed CSS tree structure to flip.
-     * @return void
-     */
-    protected function rtlize($csstree) {
-        $rtlcss = new core_rtlcss($csstree);
-        $rtlcss->flip();
-    }
-    /**
-     * Return the direct URL for an image from the pix folder.
-     *
-     * Use this function sparingly and never for icons. For icons use pix_icon or the pix helper in a mustache template.
-     *
-     * @deprecated since Moodle 3.3
-     * @param string $imagename the name of the icon.
-     * @param string $component specification of one plugin like in get_string()
-     * @return moodle_url
-     */
-    public function pix_url($imagename, $component) {
-        debugging('pix_url is deprecated. Use image_url for images and pix_icon for icons.', DEBUG_DEVELOPER);
-        return $this->image_url($imagename, $component);
-    }
-    /**
-     * Return the direct URL for an image from the pix folder.
-     *
-     * Use this function sparingly and never for icons. For icons use pix_icon or the pix helper in a mustache template.
-     *
-     * @param string $imagename the name of the icon.
-     * @param string $component specification of one plugin like in get_string()
-     * @return moodle_url
-     */
-    public function image_url($imagename, $component) {
-        global $CFG;
-        $params = array('theme'=>$this->name);
-        $svg = $this->use_svg_icons();
-        if (empty($component) or $component === 'moodle' or $component === 'core') {
-            $params['component'] = 'core';
-        } else {
-            $params['component'] = $component;
-        }
-        $rev = theme_get_revision();
-        if ($rev != -1) {
-            $params['rev'] = $rev;
-        }
-        $params['image'] = $imagename;
-        $url = new moodle_url("/theme/image.php");
-        if (!empty($CFG->slasharguments) and $rev > 0) {
-            $path = '/'.$params['theme'].'/'.$params['component'].'/'.$params['rev'].'/'.$params['image'];
-            if (!$svg) {
-                // We add a simple /_s to the start of the path.
-                // The underscore is used to ensure that it isn't a valid theme name.
-                $path = '/_s'.$path;
-            }
-            $url->set_slashargument($path, 'noparam', true);
-        } else {
-            if (!$svg) {
-                // We add an SVG param so that we know not to serve SVG images.
-                // We do this because all modern browsers support SVG and this param will one day be removed.
-                $params['svg'] = '0';
-            }
-            $url->params($params);
-        }
-        return $url;
-    }
-    /**
-     * Return the URL for a font
-     *
-     * @param string $font the name of the font (including extension).
-     * @param string $component specification of one plugin like in get_string()
-     * @return moodle_url
-     */
-    public function font_url($font, $component) {
-        global $CFG;
-        $params = array('theme'=>$this->name);
-        if (empty($component) or $component === 'moodle' or $component === 'core') {
-            $params['component'] = 'core';
-        } else {
-            $params['component'] = $component;
-        }
-        $rev = theme_get_revision();
-        if ($rev != -1) {
-            $params['rev'] = $rev;
-        }
-        $params['font'] = $font;
-        $url = new moodle_url("/theme/font.php");
-        if (!empty($CFG->slasharguments) and $rev > 0) {
-            $path = '/'.$params['theme'].'/'.$params['component'].'/'.$params['rev'].'/'.$params['font'];
-            $url->set_slashargument($path, 'noparam', true);
-        } else {
-            $url->params($params);
-        }
-        return $url;
-    }
-    /**
-     * Returns URL to the stored file via pluginfile.php.
-     *
-     * Note the theme must also implement pluginfile.php handler,
-     * theme revision is used instead of the itemid.
-     *
-     * @param string $setting
-     * @param string $filearea
-     * @return string protocol relative URL or null if not present
-     */
-    public function setting_file_url($setting, $filearea) {
-        global $CFG;
-        if (empty($this->settings->$setting)) {
-            return null;
-        }
-        $component = 'theme_'.$this->name;
-        $itemid = theme_get_revision();
-        $filepath = $this->settings->$setting;
-        $syscontext = context_system::instance();
-        $url = moodle_url::make_file_url("$CFG->wwwroot/pluginfile.php", "/$syscontext->id/$component/$filearea/$itemid".$filepath);
-        // Now this is tricky because the we can not hardcode http or https here, lets use the relative link.
-        // Note: unfortunately moodle_url does not support //urls yet.
-        $url = preg_replace('|^https?://|i', '//', $url->out(false));
-        return $url;
-    }
-    /**
-     * Serve the theme setting file.
-     *
-     * @param string $filearea
-     * @param array $args
-     * @param bool $forcedownload
-     * @param array $options
-     * @return bool may terminate if file not found or donotdie not specified
-     */
-    public function setting_file_serve($filearea, $args, $forcedownload, $options) {
-        global $CFG;
-        require_once("$CFG->libdir/filelib.php");
-        $syscontext = context_system::instance();
-        $component = 'theme_'.$this->name;
-        $revision = array_shift($args);
-        if ($revision < 0) {
-            $lifetime = 0;
-        } else {
-            $lifetime = 60*60*24*60;
-            // By default, theme files must be cache-able by both browsers and proxies.
-            if (!array_key_exists('cacheability', $options)) {
-                $options['cacheability'] = 'public';
-            }
-        }
-        $fs = get_file_storage();
-        $relativepath = implode('/', $args);
-        $fullpath = "/{$syscontext->id}/{$component}/{$filearea}/0/{$relativepath}";
-        $fullpath = rtrim($fullpath, '/');
-        if ($file = $fs->get_file_by_hash(sha1($fullpath))) {
-            send_stored_file($file, $lifetime, 0, $forcedownload, $options);
-            return true;
-        } else {
-            send_file_not_found();
-        }
-    }
-    /**
-     * Resolves the real image location.
-     *
-     * $svg was introduced as an arg in 2.4. It is important because not all supported browsers support the use of SVG
-     * and we need a way in which to turn it off.
-     * By default SVG won't be used unless asked for. This is done for two reasons:
-     *   1. It ensures that we don't serve svg images unless we really want to. The admin has selected to force them, of the users
-     *      browser supports SVG.
-     *   2. We only serve SVG images from locations we trust. This must NOT include any areas where the image may have been uploaded
-     *      by the user due to security concerns.
-     *
-     * @param string $image name of image, may contain relative path
-     * @param string $component
-     * @param bool|null $svg Should SVG images also be looked for? If null, falls back to auto-detection of browser support
-     * @return string full file path
-     */
-    public function resolve_image_location($image, $component, $svg = false) {
-        global $CFG;
-        if (!is_bool($svg)) {
-            // If $svg isn't a bool then we need to decide for ourselves.
-            $svg = $this->use_svg_icons();
-        }
-        if ($component === 'moodle' or $component === 'core' or empty($component)) {
-            if ($imagefile = $this->image_exists("$this->dir/pix_core/$image", $svg)) {
-                return $imagefile;
-            }
-            foreach (array_reverse($this->parent_configs) as $parent_config) { // base first, the immediate parent last
-                if ($imagefile = $this->image_exists("$parent_config->dir/pix_core/$image", $svg)) {
-                    return $imagefile;
-                }
-            }
-            if ($imagefile = $this->image_exists("$CFG->dataroot/pix/$image", $svg)) {
-                return $imagefile;
-            }
-            if ($imagefile = $this->image_exists("$CFG->dirroot/pix/$image", $svg)) {
-                return $imagefile;
-            }
-            return null;
-        } else if ($component === 'theme') { //exception
-            if ($image === 'favicon') {
-                return "$this->dir/pix/favicon.ico";
-            }
-            if ($imagefile = $this->image_exists("$this->dir/pix/$image", $svg)) {
-                return $imagefile;
-            }
-            foreach (array_reverse($this->parent_configs) as $parent_config) { // base first, the immediate parent last
-                if ($imagefile = $this->image_exists("$parent_config->dir/pix/$image", $svg)) {
-                    return $imagefile;
-                }
-            }
-            return null;
-        } else {
-            if (strpos($component, '_') === false) {
-                $component = "mod_{$component}";
-            }
-            list($type, $plugin) = explode('_', $component, 2);
-            // In Moodle 4.0 we introduced a new image format.
-            // Support that image format here.
-            $candidates = [$image];
-            if ($type === 'mod') {
-                if ($image === 'icon' || $image === 'monologo') {
-                    $candidates = ['monologo', 'icon'];
-                    if ($image === 'icon') {
-                        debugging(
-                            "The 'icon' image for activity modules has been replaced with a new 'monologo'. " .
-                                "Please update your calling code to fetch the new icon where possible. " .
-                                "Called for component {$component}.",
-                            DEBUG_DEVELOPER
-                        );
-                    }
-                }
-            }
-            foreach ($candidates as $image) {
-                if ($imagefile = $this->image_exists("$this->dir/pix_plugins/$type/$plugin/$image", $svg)) {
-                    return $imagefile;
-                }
-                // Base first, the immediate parent last.
-                foreach (array_reverse($this->parent_configs) as $parentconfig) {
-                    if ($imagefile = $this->image_exists("$parentconfig->dir/pix_plugins/$type/$plugin/$image", $svg)) {
-                        return $imagefile;
-                    }
-                }
-                if ($imagefile = $this->image_exists("$CFG->dataroot/pix_plugins/$type/$plugin/$image", $svg)) {
-                    return $imagefile;
-                }
-                $dir = core_component::get_plugin_directory($type, $plugin);
-                if ($imagefile = $this->image_exists("$dir/pix/$image", $svg)) {
-                    return $imagefile;
-                }
-            }
-            return null;
-        }
-    }
-    /**
-     * Resolves the real font location.
-     *
-     * @param string $font name of font file
-     * @param string $component
-     * @return string full file path
-     */
-    public function resolve_font_location($font, $component) {
-        global $CFG;
-        if ($component === 'moodle' or $component === 'core' or empty($component)) {
-            if (file_exists("$this->dir/fonts_core/$font")) {
-                return "$this->dir/fonts_core/$font";
-            }
-            foreach (array_reverse($this->parent_configs) as $parent_config) { // Base first, the immediate parent last.
-                if (file_exists("$parent_config->dir/fonts_core/$font")) {
-                    return "$parent_config->dir/fonts_core/$font";
-                }
-            }
-            if (file_exists("$CFG->dataroot/fonts/$font")) {
-                return "$CFG->dataroot/fonts/$font";
-            }
-            if (file_exists("$CFG->dirroot/lib/fonts/$font")) {
-                return "$CFG->dirroot/lib/fonts/$font";
-            }
-            return null;
-        } else if ($component === 'theme') { // Exception.
-            if (file_exists("$this->dir/fonts/$font")) {
-                return "$this->dir/fonts/$font";
-            }
-            foreach (array_reverse($this->parent_configs) as $parent_config) { // Base first, the immediate parent last.
-                if (file_exists("$parent_config->dir/fonts/$font")) {
-                    return "$parent_config->dir/fonts/$font";
-                }
-            }
-            return null;
-        } else {
-            if (strpos($component, '_') === false) {
-                $component = 'mod_'.$component;
-            }
-            list($type, $plugin) = explode('_', $component, 2);
-            if (file_exists("$this->dir/fonts_plugins/$type/$plugin/$font")) {
-                return "$this->dir/fonts_plugins/$type/$plugin/$font";
-            }
-            foreach (array_reverse($this->parent_configs) as $parent_config) { // Base first, the immediate parent last.
-                if (file_exists("$parent_config->dir/fonts_plugins/$type/$plugin/$font")) {
-                    return "$parent_config->dir/fonts_plugins/$type/$plugin/$font";
-                }
-            }
-            if (file_exists("$CFG->dataroot/fonts_plugins/$type/$plugin/$font")) {
-                return "$CFG->dataroot/fonts_plugins/$type/$plugin/$font";
-            }
-            $dir = core_component::get_plugin_directory($type, $plugin);
-            if (file_exists("$dir/fonts/$font")) {
-                return "$dir/fonts/$font";
-            }
-            return null;
-        }
-    }
-    /**
-     * Return true if we should look for SVG images as well.
-     *
-     * @return bool
-     */
-    public function use_svg_icons() {
-        if ($this->usesvg === null) {
-            $this->usesvg = core_useragent::supports_svg();
-        }
-        return $this->usesvg;
-    }
-    /**
-     * Forces the usesvg setting to either true or false, avoiding any decision making.
-     *
-     * This function should only ever be used when absolutely required, and before any generation of image URL's has occurred.
-     * DO NOT ABUSE THIS FUNCTION... not that you'd want to right ;)
-     *
-     * @param bool $setting True to force the use of svg when available, null otherwise.
-     */
-    public function force_svg_use($setting) {
-        $this->usesvg = (bool)$setting;
-    }
-    /**
-     * Set to be in RTL mode.
-     *
-     * This will likely be used when post processing the CSS before serving it.
-     *
-     * @param bool $inrtl True when in RTL mode.
-     */
-    public function set_rtl_mode($inrtl = true) {
-        $this->rtlmode = $inrtl;
-    }
-    /**
-     * Checks if source maps are supported
-     *
-     * @param bool $themedesigner True if theme designer is enabled.
-     * @return boolean True if source maps are supported.
-     */
-    public function supports_source_maps($themedesigner): bool {
-        if (empty($this->rtlmode) && $themedesigner) {
-            return true;
-        }
-        return false;
-    }
-    /**
-     * Whether the theme is being served in RTL mode.
-     *
-     * @return bool True when in RTL mode.
-     */
-    public function get_rtl_mode() {
-        return $this->rtlmode;
-    }
-    /**
-     * Checks if file with any image extension exists.
-     *
-     * The order to these images was adjusted prior to the release of 2.4
-     * At that point the were the following image counts in Moodle core:
-     *
-     *     - png = 667 in pix dirs (1499 total)
-     *     - gif = 385 in pix dirs (606 total)
-     *     - jpg = 62  in pix dirs (74 total)
-     *     - jpeg = 0  in pix dirs (1 total)
-     *
-     * There is work in progress to move towards SVG presently hence that has been prioritiesed.
-     *
-     * @param string $filepath
-     * @param bool $svg If set to true SVG images will also be looked for.
-     * @return string image name with extension
-     */
-    private static function image_exists($filepath, $svg = false) {
-        if ($svg && file_exists("$filepath.svg")) {
-            return "$filepath.svg";
-        } else  if (file_exists("$filepath.png")) {
-            return "$filepath.png";
-        } else if (file_exists("$filepath.gif")) {
-            return "$filepath.gif";
-        } else  if (file_exists("$filepath.jpg")) {
-            return "$filepath.jpg";
-        } else  if (file_exists("$filepath.jpeg")) {
-            return "$filepath.jpeg";
-        } else {
-            return false;
-        }
-    }
-    /**
-     * Loads the theme config from config.php file.
-     *
-     * @param string $themename
-     * @param stdClass $settings from config_plugins table
-     * @param boolean $parentscheck true to also check the parents.    .
-     * @return ?stdClass The theme configuration
-     */
-    private static function find_theme_config($themename, $settings, $parentscheck = true) {
-        // We have to use the variable name $THEME (upper case) because that
-        // is what is used in theme config.php files.
-        if (!$dir = theme_config::find_theme_location($themename)) {
-            return null;
-        }
-        $THEME = new stdClass();
-        $THEME->name     = $themename;
-        $THEME->dir      = $dir;
-        $THEME->settings = $settings;
-        global $CFG; // just in case somebody tries to use $CFG in theme config
-        include("$THEME->dir/config.php");
-        // verify the theme configuration is OK
-        if (!is_array($THEME->parents)) {
-            // parents option is mandatory now
-            return null;
-        } else {
-            // We use $parentscheck to only check the direct parents (avoid infinite loop).
-            if ($parentscheck) {
-                // Find all parent theme configs.
-                foreach ($THEME->parents as $parent) {
-                    $parentconfig = theme_config::find_theme_config($parent, $settings, false);
-                    if (empty($parentconfig)) {
-                        return null;
-                    }
-                }
-            }
-        }
-        return $THEME;
-    }
-    /**
-     * Finds the theme location and verifies the theme has all needed files
-     * and is not obsoleted.
-     *
-     * @param string $themename
-     * @return string full dir path or null if not found
-     */
-    private static function find_theme_location($themename) {
-        global $CFG;
-        if (file_exists("$CFG->dirroot/theme/$themename/config.php")) {
-            $dir = "$CFG->dirroot/theme/$themename";
-        } else if (!empty($CFG->themedir) and file_exists("$CFG->themedir/$themename/config.php")) {
-            $dir = "$CFG->themedir/$themename";
-        } else {
-            return null;
-        }
-        if (file_exists("$dir/styles.php")) {
-            //legacy theme - needs to be upgraded - upgrade info is displayed on the admin settings page
-            return null;
-        }
-        return $dir;
-    }
-    /**
-     * Get the renderer for a part of Moodle for this theme.
-     *
-     * @param moodle_page $page the page we are rendering
-     * @param string $component the name of part of moodle. E.g. 'core', 'quiz', 'qtype_multichoice'.
-     * @param string $subtype optional subtype such as 'news' resulting to 'mod_forum_news'
-     * @param string $target one of rendering target constants
-     * @return renderer_base the requested renderer.
-     */
-    public function get_renderer(moodle_page $page, $component, $subtype = null, $target = null) {
-        if (is_null($this->rf)) {
-            $classname = $this->rendererfactory;
-            $this->rf = new $classname($this);
-        }
-        return $this->rf->get_renderer($page, $component, $subtype, $target);
-    }
-    /**
-     * Get the information from {@link $layouts} for this type of page.
-     *
-     * @param string $pagelayout the the page layout name.
-     * @return array the appropriate part of {@link $layouts}.
-     */
-    protected function layout_info_for_page($pagelayout) {
-        if (array_key_exists($pagelayout, $this->layouts)) {
-            return $this->layouts[$pagelayout];
-        } else {
-            debugging('Invalid page layout specified: ' . $pagelayout);
-            return $this->layouts['standard'];
-        }
-    }
-    /**
-     * Given the settings of this theme, and the page pagelayout, return the
-     * full path of the page layout file to use.
-     *
-     * Used by {@link core_renderer::header()}.
-     *
-     * @param string $pagelayout the the page layout name.
-     * @return string Full path to the lyout file to use
-     */
-    public function layout_file($pagelayout) {
+function template_reset_all_caches() {
-        global $CFG;
-        $layoutinfo = $this->layout_info_for_page($pagelayout);
-        $layoutfile = $layoutinfo['file'];
-        if (array_key_exists('theme', $layoutinfo)) {
-            $themes = array($layoutinfo['theme']);
-        } else {
-            $themes = array_merge(array($this->name),$this->parents);
-        }
-        foreach ($themes as $theme) {
-            if ($dir = $this->find_theme_location($theme)) {
-                $path = "$dir/layout/$layoutfile";
-                // Check the template exists, return general base theme template if not.
-                if (is_readable($path)) {
-                    return $path;
-                }
-            }
-        }
-        throw new coding_exception('Can not find layout file for: ' . $pagelayout . ' (' . $layoutfile . ')');
-    }
-    /**
-     * Returns auxiliary page layout options specified in layout configuration array.
-     *
-     * @param string $pagelayout
-     * @return array
-     */
-    public function pagelayout_options($pagelayout) {
-        $info = $this->layout_info_for_page($pagelayout);
-        if (!empty($info['options'])) {
-            return $info['options'];
-        }
-        return array();
-    }
-    /**
-     * Inform a block_manager about the block regions this theme wants on this
-     * page layout.
-     *
-     * @param string $pagelayout the general type of the page.
-     * @param block_manager $blockmanager the block_manger to set up.
-     */
-    public function setup_blocks($pagelayout, $blockmanager) {
-        $layoutinfo = $this->layout_info_for_page($pagelayout);
-        if (!empty($layoutinfo['regions'])) {
-            $blockmanager->add_regions($layoutinfo['regions'], false);
-            $blockmanager->set_default_region($layoutinfo['defaultregion']);
-        }
-    }
-    /**
-     * Gets the visible name for the requested block region.
-     *
-     * @param string $region The region name to get
-     * @param string $theme The theme the region belongs to (may come from the parent theme)
-     * @return string
-     */
-    protected function get_region_name($region, $theme) {
-        $stringman = get_string_manager();
-        // Check if the name is defined in the theme.
-        if ($stringman->string_exists('region-' . $region, 'theme_' . $theme)) {
-            return get_string('region-' . $region, 'theme_' . $theme);
-        }
-        // Check the theme parents.
-        foreach ($this->parents as $parentthemename) {
-            if ($stringman->string_exists('region-' . $region, 'theme_' . $parentthemename)) {
-                return get_string('region-' . $region, 'theme_' . $parentthemename);
-            }
-        }
-        // Last resort, try the boost theme for names.
-        return get_string('region-' . $region, 'theme_boost');
-    }
-    /**
-     * Get the list of all block regions known to this theme in all templates.
-     *
-     * @return array internal region name => human readable name.
-     */
-    public function get_all_block_regions() {
-        $regions = array();
-        foreach ($this->layouts as $layoutinfo) {
-            foreach ($layoutinfo['regions'] as $region) {
-                $regions[$region] = $this->get_region_name($region, $this->name);
-            }
-        }
-        return $regions;
-    }
-    /**
-     * Returns the human readable name of the theme
-     *
-     * @return string
-     */
-    public function get_theme_name() {
-        return get_string('pluginname', 'theme_'.$this->name);
-    }
-    /**
-     * Returns the block render method.
-     *
-     * It is set by the theme via:
-     *     $THEME->blockrendermethod = '...';
-     *
-     * It can be one of two values, blocks or blocks_for_region.
-     * It should be set to the method being used by the theme layouts.
-     *
-     * @return string
-     */
-    public function get_block_render_method() {
-        if ($this->blockrendermethod) {
-            // Return the specified block render method.
-            return $this->blockrendermethod;
-        }
-        // Its not explicitly set, check the parent theme configs.
-        foreach ($this->parent_configs as $config) {
-            if (isset($config->blockrendermethod)) {
-                return $config->blockrendermethod;
-            }
-        }
-        // Default it to blocks.
-        return 'blocks';
-    }
-    /**
-     * Get the callable for CSS tree post processing.
+    global $CFG;
-     *
-     * @return string|null
-     */
+    $next = time();
-    public function get_css_tree_post_processor() {
-        $configs = [$this] + $this->parent_configs;
+    if (isset($CFG->templaterev) && $next <= $CFG->templaterev && $CFG->templaterev - $next < 60 * 60) {
-        foreach ($configs as $config) {
+        // This resolves problems when reset is requested repeatedly within 1s,
-            if (!empty($config->csstreepostprocessor) && is_callable($config->csstreepostprocessor)) {
-                return $config->csstreepostprocessor;
-            }
+        // the < 1h condition prevents accidental switching to future dates
         // because we might not recover from it.
+        $next = $CFG->templaterev + 1;
         return null;
+    set_config('templaterev', $next);
-}
-/**
- * This class keeps track of which HTML tags are currently open.
- *
- * This makes it much easier to always generate well formed XHTML output, even
- * if execution terminates abruptly. Any time you output some opening HTML
- * without the matching closing HTML, you should push the necessary close tags
- * onto the stack.
- *
- * @copyright 2009 Tim Hunt
  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @since Moodle 2.0
- * @package core
- * @category output
- */
-class xhtml_container_stack {
-    /**
-     * @var array Stores the list of open containers.
-     */
-    protected $opencontainers = array();
-    /**
-     * @var array In developer debug mode, stores a stack trace of all opens and
-     * closes, so we can output helpful error messages when there is a mismatch.
-     */
-    protected $log = array();
-    /**
-     * @var boolean Store whether we are developer debug mode. We need this in
-     * several places including in the destructor where we may not have access to $CFG.
-     */
-    protected $isdebugging;
-    /**
+/**
-     * Constructor
-     */
-    public function __construct() {
-        global $CFG;
-        $this->isdebugging = $CFG->debugdeveloper;
-    }
-    /**
-     * Push the close HTML for a recently opened container onto the stack.
-     *
-     * @param string $type The type of container. This is checked when {@link pop()}
-     *      is called and must match, otherwise a developer debug warning is output.
-     * @param string $closehtml The HTML required to close the container.
-     */
-    public function push($type, $closehtml) {
-        $container = new stdClass;
-        $container->type = $type;
-        $container->closehtml = $closehtml;
-        if ($this->isdebugging) {
-            $this->log('Open', $type);
-        }
-        array_push($this->opencontainers, $container);
-    }
-    /**
-     * Pop the HTML for the next closing container from the stack. The $type
-     * must match the type passed when the container was opened, otherwise a
-     * warning will be output.
-     *
-     * @param string $type The type of container.
-     * @return ?string the HTML required to close the container.
-     */
-    public function pop($type) {
-        if (empty($this->opencontainers)) {
-            debugging('<p>There are no more open containers. This suggests there is a nesting problem.</p>' .
-                    $this->output_log(), DEBUG_DEVELOPER);
-            return;
-        }
-        $container = array_pop($this->opencontainers);
-        if ($container->type != $type) {
-            debugging('<p>The type of container to be closed (' . $container->type .
-                    ') does not match the type of the next open container (' . $type .
-                    '). This suggests there is a nesting problem.</p>' .
-                    $this->output_log(), DEBUG_DEVELOPER);
-        }
-        if ($this->isdebugging) {
-            $this->log('Close', $type);
-        }
-        return $container->closehtml;
-    }
-    /**
-     * Close all but the last open container. This is useful in places like error
-     * handling, where you want to close all the open containers (apart from <body>)
-     * before outputting the error message.
-     *
-     * @param bool $shouldbenone assert that the stack should be empty now - causes a
-     *      developer debug warning if it isn't.
-     * @return string the HTML required to close any open containers inside <body>.
-     */
-    public function pop_all_but_last($shouldbenone = false) {
-        if ($shouldbenone && count($this->opencontainers) != 1) {
-            debugging('<p>Some HTML tags were opened in the body of the page but not closed.</p>' .
-                    $this->output_log(), DEBUG_DEVELOPER);
-        }
-        $output = '';
-        while (count($this->opencontainers) > 1) {
-            $container = array_pop($this->opencontainers);
-            $output .= $container->closehtml;
-        }
-        return $output;
-    }
-    /**
-     * You can call this function if you want to throw away an instance of this
-     * class without properly emptying the stack (for example, in a unit test).
-     * Calling this method stops the destruct method from outputting a developer
-     * debug warning. After calling this method, the instance can no longer be used.
-     */
-    public function discard() {
+ * Invalidate all server and client side JS caches.
-        $this->opencontainers = null;
-    }
+ */
+function js_reset_all_caches() {
-    /**
-     * Adds an entry to the log.
+    global $CFG;
-     *
-     * @param string $action The name of the action
+    $next = time();
-     * @param string $type The type of action
+    if (isset($CFG->jsrev) && $next <= $CFG->jsrev && $CFG->jsrev - $next < 60 * 60) {
-     */
-    protected function log($action, $type) {
-        $this->log[] = '<li>' . $action . ' ' . $type . ' at:' .
-                format_backtrace(debug_backtrace()) . '</li>';
-    }
+        // This resolves problems when reset is requested repeatedly within 1s,
-    /**
-     * Outputs the log's contents as a HTML list.
         // the < 1h condition prevents accidental switching to future dates

Proyectos de Subversion Moodle

(root)/lib/outputlib.php – Rev 1 → 1441