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2765 lines
98 KiB
2765 lines
98 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Functions for generating the HTML that Moodle should output.
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*
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* Please see http://docs.moodle.org/en/Developement:How_Moodle_outputs_HTML
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* for an overview.
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*
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* @copyright 2009 Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @package core
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* @category output
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*/
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defined('MOODLE_INTERNAL') || die();
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require_once($CFG->libdir.'/outputcomponents.php');
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require_once($CFG->libdir.'/outputactions.php');
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require_once($CFG->libdir.'/outputfactories.php');
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require_once($CFG->libdir.'/outputrenderers.php');
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require_once($CFG->libdir.'/outputrequirementslib.php');
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/**
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* Returns current theme revision number.
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*
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* @return int
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*/
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function theme_get_revision() {
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global $CFG;
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if (empty($CFG->themedesignermode)) {
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if (empty($CFG->themerev)) {
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// This only happens during install. It doesn't matter what themerev we use as long as it's positive.
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return 1;
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} else {
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return $CFG->themerev;
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}
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} else {
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return -1;
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}
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}
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/**
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* Returns current theme sub revision number. This is the revision for
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* this theme exclusively, not the global theme revision.
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*
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* @param string $themename The non-frankenstyle name of the theme
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* @return int
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*/
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function theme_get_sub_revision_for_theme($themename) {
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global $CFG;
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if (empty($CFG->themedesignermode)) {
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$pluginname = "theme_{$themename}";
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$revision = during_initial_install() ? null : get_config($pluginname, 'themerev');
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if (empty($revision)) {
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// This only happens during install. It doesn't matter what themerev we use as long as it's positive.
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return 1;
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} else {
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return $revision;
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}
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} else {
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return -1;
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}
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}
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/**
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* Calculates and returns the next theme revision number.
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*
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* @return int
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*/
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function theme_get_next_revision() {
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global $CFG;
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$next = time();
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if (isset($CFG->themerev) and $next <= $CFG->themerev and $CFG->themerev - $next < 60*60) {
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// This resolves problems when reset is requested repeatedly within 1s,
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// the < 1h condition prevents accidental switching to future dates
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// because we might not recover from it.
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$next = $CFG->themerev+1;
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}
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return $next;
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}
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/**
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* Calculates and returns the next theme revision number.
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*
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* @param string $themename The non-frankenstyle name of the theme
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* @return int
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*/
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function theme_get_next_sub_revision_for_theme($themename) {
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global $CFG;
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$next = time();
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$current = theme_get_sub_revision_for_theme($themename);
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if ($next <= $current and $current - $next < 60 * 60) {
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// This resolves problems when reset is requested repeatedly within 1s,
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// the < 1h condition prevents accidental switching to future dates
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// because we might not recover from it.
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$next = $current + 1;
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}
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return $next;
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}
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/**
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* Sets the current theme revision number.
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*
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* @param int $revision The new theme revision number
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*/
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function theme_set_revision($revision) {
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set_config('themerev', $revision);
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}
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/**
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* Sets the current theme revision number for a specific theme.
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* This does not affect the global themerev value.
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*
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* @param string $themename The non-frankenstyle name of the theme
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* @param int $revision The new theme revision number
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*/
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function theme_set_sub_revision_for_theme($themename, $revision) {
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set_config('themerev', $revision, "theme_{$themename}");
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}
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/**
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* Get the path to a theme config.php file.
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*
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* @param string $themename The non-frankenstyle name of the theme to check
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*/
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function theme_get_config_file_path($themename) {
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global $CFG;
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if (file_exists("{$CFG->dirroot}/theme/{$themename}/config.php")) {
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return "{$CFG->dirroot}/theme/{$themename}/config.php";
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} else if (!empty($CFG->themedir) and file_exists("{$CFG->themedir}/{$themename}/config.php")) {
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return "{$CFG->themedir}/{$themename}/config.php";
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} else {
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return null;
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}
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}
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/**
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* Get the path to the local cached CSS file.
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*
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* @param string $themename The non-frankenstyle theme name.
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* @param int $globalrevision The global theme revision.
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* @param int $themerevision The theme specific revision.
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* @param string $direction Either 'ltr' or 'rtl' (case sensitive).
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*/
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function theme_get_css_filename($themename, $globalrevision, $themerevision, $direction) {
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global $CFG;
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$path = "{$CFG->localcachedir}/theme/{$globalrevision}/{$themename}/css";
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$filename = $direction == 'rtl' ? "all-rtl_{$themerevision}" : "all_{$themerevision}";
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return "{$path}/{$filename}.css";
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}
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/**
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* Generates and saves the CSS files for the given theme configs.
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*
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* @param theme_config[] $themeconfigs An array of theme_config instances.
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* @param array $directions Must be a subset of ['rtl', 'ltr'].
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* @param bool $cache Should the generated files be stored in local cache.
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*/
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function theme_build_css_for_themes($themeconfigs = [], $directions = ['rtl', 'ltr'], $cache = true) {
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global $CFG;
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if (empty($themeconfigs)) {
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return;
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}
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require_once("{$CFG->libdir}/csslib.php");
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$themescss = [];
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$themerev = theme_get_revision();
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// Make sure the local cache directory exists.
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make_localcache_directory('theme');
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foreach ($themeconfigs as $themeconfig) {
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$themecss = [];
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$oldrevision = theme_get_sub_revision_for_theme($themeconfig->name);
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$newrevision = theme_get_next_sub_revision_for_theme($themeconfig->name);
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// First generate all the new css.
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foreach ($directions as $direction) {
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// Lock it on. Technically we should build all themes for SVG and no SVG - but ie9 is out of support.
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$themeconfig->force_svg_use(true);
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$themeconfig->set_rtl_mode(($direction === 'rtl'));
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$themecss[$direction] = $themeconfig->get_css_content();
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if ($cache) {
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$themeconfig->set_css_content_cache($themecss[$direction]);
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$filename = theme_get_css_filename($themeconfig->name, $themerev, $newrevision, $direction);
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css_store_css($themeconfig, $filename, $themecss[$direction]);
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}
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}
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$themescss[] = $themecss;
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if ($cache) {
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// Only update the theme revision after we've successfully created the
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// new CSS cache.
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theme_set_sub_revision_for_theme($themeconfig->name, $newrevision);
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// Now purge old files. We must purge all old files in the local cache
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// because we've incremented the theme sub revision. This will leave any
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// files with the old revision inaccessbile so we might as well removed
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// them from disk.
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foreach (['ltr', 'rtl'] as $direction) {
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$oldcss = theme_get_css_filename($themeconfig->name, $themerev, $oldrevision, $direction);
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if (file_exists($oldcss)) {
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unlink($oldcss);
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}
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}
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}
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}
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return $themescss;
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}
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/**
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* Invalidate all server and client side caches.
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*
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* This method deletes the physical directory that is used to cache the theme
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* files used for serving.
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* Because it deletes the main theme cache directory all themes are reset by
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* this function.
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*/
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function theme_reset_all_caches() {
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global $CFG, $PAGE;
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require_once("{$CFG->libdir}/filelib.php");
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$next = theme_get_next_revision();
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theme_set_revision($next);
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if (!empty($CFG->themedesignermode)) {
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$cache = cache::make_from_params(cache_store::MODE_APPLICATION, 'core', 'themedesigner');
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$cache->purge();
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}
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// Purge compiled post processed css.
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cache::make('core', 'postprocessedcss')->purge();
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// Delete all old theme localcaches.
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$themecachedirs = glob("{$CFG->localcachedir}/theme/*", GLOB_ONLYDIR);
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foreach ($themecachedirs as $localcachedir) {
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fulldelete($localcachedir);
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}
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if ($PAGE) {
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$PAGE->reload_theme();
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}
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}
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/**
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* Enable or disable theme designer mode.
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*
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* @param bool $state
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*/
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function theme_set_designer_mod($state) {
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set_config('themedesignermode', (int)!empty($state));
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// Reset caches after switching mode so that any designer mode caches get purged too.
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theme_reset_all_caches();
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}
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/**
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* Checks if the given device has a theme defined in config.php.
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*
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* @return bool
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*/
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function theme_is_device_locked($device) {
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global $CFG;
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$themeconfigname = core_useragent::get_device_type_cfg_var_name($device);
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return isset($CFG->config_php_settings[$themeconfigname]);
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}
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/**
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* Returns the theme named defined in config.php for the given device.
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*
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* @return string or null
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*/
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function theme_get_locked_theme_for_device($device) {
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global $CFG;
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if (!theme_is_device_locked($device)) {
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return null;
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}
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$themeconfigname = core_useragent::get_device_type_cfg_var_name($device);
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return $CFG->config_php_settings[$themeconfigname];
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}
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/**
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* This class represents the configuration variables of a Moodle theme.
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*
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* All the variables with access: public below (with a few exceptions that are marked)
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* are the properties you can set in your themes config.php file.
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*
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* There are also some methods and protected variables that are part of the inner
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* workings of Moodle's themes system. If you are just editing a themes config.php
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* file, you can just ignore those, and the following information for developers.
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*
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* Normally, to create an instance of this class, you should use the
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* {@link theme_config::load()} factory method to load a themes config.php file.
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* However, normally you don't need to bother, because moodle_page (that is, $PAGE)
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* will create one for you, accessible as $PAGE->theme.
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*
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* @copyright 2009 Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @since Moodle 2.0
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* @package core
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* @category output
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*/
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class theme_config {
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/**
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* @var string Default theme, used when requested theme not found.
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*/
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const DEFAULT_THEME = 'boost';
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/** The key under which the SCSS file is stored amongst the CSS files. */
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const SCSS_KEY = '__SCSS__';
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/**
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* @var array You can base your theme on other themes by linking to the other theme as
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* parents. This lets you use the CSS and layouts from the other themes
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* (see {@link theme_config::$layouts}).
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* That makes it easy to create a new theme that is similar to another one
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* but with a few changes. In this themes CSS you only need to override
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* those rules you want to change.
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*/
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public $parents;
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/**
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* @var array The names of all the stylesheets from this theme that you would
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* like included, in order. Give the names of the files without .css.
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*/
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public $sheets = array();
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/**
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* @var array The names of all the stylesheets from parents that should be excluded.
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* true value may be used to specify all parents or all themes from one parent.
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* If no value specified value from parent theme used.
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*/
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public $parents_exclude_sheets = null;
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/**
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* @var array List of plugin sheets to be excluded.
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* If no value specified value from parent theme used.
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*/
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public $plugins_exclude_sheets = null;
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/**
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* @var array List of style sheets that are included in the text editor bodies.
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* Sheets from parent themes are used automatically and can not be excluded.
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*/
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public $editor_sheets = array();
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/**
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* @var bool Whether a fallback version of the stylesheet will be used
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* whilst the final version is generated.
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*/
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public $usefallback = false;
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/**
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* @var array The names of all the javascript files this theme that you would
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* like included from head, in order. Give the names of the files without .js.
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*/
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public $javascripts = array();
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/**
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* @var array The names of all the javascript files this theme that you would
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* like included from footer, in order. Give the names of the files without .js.
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*/
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public $javascripts_footer = array();
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/**
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* @var array The names of all the javascript files from parents that should
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* be excluded. true value may be used to specify all parents or all themes
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* from one parent.
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* If no value specified value from parent theme used.
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*/
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public $parents_exclude_javascripts = null;
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/**
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* @var array Which file to use for each page layout.
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*
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* This is an array of arrays. The keys of the outer array are the different layouts.
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* Pages in Moodle are using several different layouts like 'normal', 'course', 'home',
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* 'popup', 'form', .... The most reliable way to get a complete list is to look at
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* {@link http://cvs.moodle.org/moodle/theme/base/config.php?view=markup the base theme config.php file}.
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* That file also has a good example of how to set this setting.
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*
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* For each layout, the value in the outer array is an array that describes
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* how you want that type of page to look. For example
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* <pre>
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* $THEME->layouts = array(
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* // Most pages - if we encounter an unknown or a missing page type, this one is used.
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* 'standard' => array(
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* 'theme' = 'mytheme',
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* 'file' => 'normal.php',
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* 'regions' => array('side-pre', 'side-post'),
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* 'defaultregion' => 'side-post'
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* ),
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* // The site home page.
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* 'home' => array(
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* 'theme' = 'mytheme',
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* 'file' => 'home.php',
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* 'regions' => array('side-pre', 'side-post'),
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* 'defaultregion' => 'side-post'
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* ),
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* // ...
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* );
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* </pre>
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*
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* 'theme' name of the theme where is the layout located
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* 'file' is the layout file to use for this type of page.
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* layout files are stored in layout subfolder
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* 'regions' This lists the regions on the page where blocks may appear. For
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* each region you list here, your layout file must include a call to
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* <pre>
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* echo $OUTPUT->blocks_for_region($regionname);
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* </pre>
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* or equivalent so that the blocks are actually visible.
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*
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* 'defaultregion' If the list of regions is non-empty, then you must pick
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* one of the one of them as 'default'. This has two meanings. First, this is
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* where new blocks are added. Second, if there are any blocks associated with
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* the page, but in non-existent regions, they appear here. (Imaging, for example,
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* that someone added blocks using a different theme that used different region
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* names, and then switched to this theme.)
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*/
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public $layouts = array();
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/**
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* @var string Name of the renderer factory class to use. Must implement the
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* {@link renderer_factory} interface.
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*
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* This is an advanced feature. Moodle output is generated by 'renderers',
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* you can customise the HTML that is output by writing custom renderers,
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* and then you need to specify 'renderer factory' so that Moodle can find
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* your renderers.
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*
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* There are some renderer factories supplied with Moodle. Please follow these
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* links to see what they do.
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* <ul>
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* <li>{@link standard_renderer_factory} - the default.</li>
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* <li>{@link theme_overridden_renderer_factory} - use this if you want to write
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* your own custom renderers in a lib.php file in this theme (or the parent theme).</li>
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* </ul>
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*/
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public $rendererfactory = 'standard_renderer_factory';
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/**
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* @var string Function to do custom CSS post-processing.
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*
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* This is an advanced feature. If you want to do custom post-processing on the
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* CSS before it is output (for example, to replace certain variable names
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* with particular values) you can give the name of a function here.
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*/
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public $csspostprocess = null;
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/**
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* @var string Function to do custom CSS post-processing on a parsed CSS tree.
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*
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* This is an advanced feature. If you want to do custom post-processing on the
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* CSS before it is output, you can provide the name of the function here. The
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* function will receive a CSS tree document as first parameter, and the theme_config
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* object as second parameter. A return value is not required, the tree can
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* be edited in place.
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*/
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public $csstreepostprocessor = null;
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/**
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* @var string Accessibility: Right arrow-like character is
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* used in the breadcrumb trail, course navigation menu
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* (previous/next activity), calendar, and search forum block.
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* If the theme does not set characters, appropriate defaults
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* are set automatically. Please DO NOT
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* use < > » - these are confusing for blind users.
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*/
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public $rarrow = null;
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/**
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* @var string Accessibility: Left arrow-like character is
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* used in the breadcrumb trail, course navigation menu
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* (previous/next activity), calendar, and search forum block.
|
|
* If the theme does not set characters, appropriate defaults
|
|
* are set automatically. Please DO NOT
|
|
* use < > » - 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 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 LESS file to compile. When set, the theme will attempt to compile the file itself.
|
|
* @var bool
|
|
*/
|
|
public $lessfile = false;
|
|
|
|
/**
|
|
* The SCSS file to compile (without .scss), located in the scss/ folder of the theme.
|
|
* Or a Closure, which receives the theme_config as argument and must
|
|
* return the SCSS content. This setting takes precedence over self::$lessfile.
|
|
* @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 LESS code to inject.
|
|
* @var string
|
|
*/
|
|
public $extralesscallback = 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 extra LESS variables.
|
|
* @var string
|
|
*/
|
|
public $lessvariablescallback = 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;
|
|
|
|
/**
|
|
* 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;
|
|
|
|
$baseconfig = $config;
|
|
|
|
$configurable = array(
|
|
'parents', 'sheets', 'parents_exclude_sheets', 'plugins_exclude_sheets', 'usefallback',
|
|
'javascripts', 'javascripts_footer', 'parents_exclude_javascripts',
|
|
'layouts', 'enablecourseajax', 'requiredblocks',
|
|
'rendererfactory', 'csspostprocess', 'editor_sheets', 'editor_scss', 'rarrow', 'larrow', 'uarrow', 'darrow',
|
|
'hidefromselector', 'doctype', 'yuicssmodules', 'blockrtlmanipulations',
|
|
'lessfile', 'extralesscallback', 'lessvariablescallback', 'blockrendermethod',
|
|
'scss', 'extrascsscallback', 'prescsscallback', 'csstreepostprocessor', 'addblockposition',
|
|
'iconsystem', 'precompiledcsscallback');
|
|
|
|
foreach ($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, $THEME->darrow have been set (theme/-/config.php).
|
|
* If not it applies sensible defaults.
|
|
*
|
|
* Accessibility: right and left arrow Unicode characters for breadcrumb, calendar,
|
|
* search forum block, etc. Important: these are 'silent' in a screen-reader
|
|
* (unlike > »), and must be accompanied by text.
|
|
*/
|
|
private function check_theme_arrows() {
|
|
if (!isset($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 = '►';
|
|
$this->larrow = '◄';
|
|
$this->uarrow = '▲';
|
|
$this->darrow = '▼';
|
|
if (empty($_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 = '▶︎';
|
|
$this->larrow = '◀︎';
|
|
}
|
|
elseif ((false !== strpos($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 = '→';
|
|
$this->larrow = '←';
|
|
$this->uarrow = '↑';
|
|
$this->darrow = '↓';
|
|
}
|
|
elseif (isset($_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 = '>';
|
|
$this->larrow = '<';
|
|
$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 $encoded false means use & and true use & in URLs
|
|
* @return moodle_url
|
|
*/
|
|
public function editor_css_url($encoded=true) {
|
|
global $CFG;
|
|
$rev = theme_get_revision();
|
|
if ($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.'/editor', 'noparam', true);
|
|
} else {
|
|
$url->params(array('theme'=>$this->name,'rev'=>$rev, 'type'=>'editor'));
|
|
}
|
|
} else {
|
|
$params = array('theme'=>$this->name, 'type'=>'editor');
|
|
$url = new moodle_url('/theme/styles_debug.php', $params);
|
|
}
|
|
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] = $sheetfile;
|
|
}
|
|
}
|
|
// Then parent themes - base first, the immediate parent last.
|
|
foreach (array_reverse($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() {
|
|
$css = '';
|
|
|
|
if (!empty($this->editor_scss)) {
|
|
$compiler = new core_scss();
|
|
|
|
foreach ($this->editor_scss as $filename) {
|
|
$compiler->set_file("{$this->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' => $this->name, 'type' => 'scss'));
|
|
} else if (!empty($this->lessfile)) {
|
|
// No need to define the type as IE here.
|
|
$urls[] = new moodle_url($baseurl, array('theme' => $this->name, 'type' => 'less'));
|
|
}
|
|
$urls[] = new moodle_url($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' => $this->name, 'type' => 'scss'));
|
|
} else if ($sheet === $this->lessfile) {
|
|
// This is the theme LESS file.
|
|
$urls[] = new moodle_url($baseurl, array('theme' => $this->name, 'type' => 'less'));
|
|
} 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'));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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 .= $this->get_precompiled_css_content();
|
|
}
|
|
} else if ($type === 'theme' && $identifier === $this->lessfile) {
|
|
// We need the content from LESS because this is the LESS file from the theme.
|
|
$csscontent .= $this->get_css_content_from_less(false);
|
|
} 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 '';
|
|
} else if ($type === 'less') {
|
|
// The LESS file of the theme is requested.
|
|
$csscontent = $this->get_css_content_from_less(true);
|
|
if ($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, [$this->lessfile, self::SCSS_KEY])) {
|
|
// Remove the LESS/SCSS file from the theme CSS files.
|
|
// The LESS/SCSS files use the type 'less' or 'scss', not 'ie'.
|
|
unset($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] = $sheetfile;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// Current theme sheets and less file.
|
|
// We first add the SCSS, or LESS file because we want the CSS ones to
|
|
// be included after the SCSS/LESS code. However, if both the LESS file
|
|
// and a CSS file share the same name, the CSS file is ignored.
|
|
if ($this->get_scss_property()) {
|
|
$cssfiles['theme'][self::SCSS_KEY] = true;
|
|
} else if (!empty($this->lessfile)) {
|
|
$sheetfile = "{$this->dir}/less/{$this->lessfile}.less";
|
|
if (is_readable($sheetfile)) {
|
|
$cssfiles['theme'][$this->lessfile] = $sheetfile;
|
|
}
|
|
}
|
|
if (is_array($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 LESS the file.
|
|
*
|
|
* @param bool $themedesigner True if theme designer is enabled.
|
|
* @return bool|string Return false when the compilation failed. Else the compiled string.
|
|
*/
|
|
protected function get_css_content_from_less($themedesigner) {
|
|
global $CFG;
|
|
|
|
$lessfile = $this->lessfile;
|
|
if (!$lessfile || !is_readable($this->dir . '/less/' . $lessfile . '.less')) {
|
|
throw new coding_exception('The theme did not define a LESS 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);
|
|
|
|
// Files list.
|
|
$files = $this->get_css_files($themedesigner);
|
|
|
|
// Get the LESS file path.
|
|
$themelessfile = $files['theme'][$lessfile];
|
|
|
|
// Setup compiler options.
|
|
$options = array(
|
|
// We need to set the import directory to where $lessfile is.
|
|
'import_dirs' => array(dirname($themelessfile) => '/'),
|
|
// Always disable default caching.
|
|
'cache_method' => false,
|
|
// Disable the relative URLs, we have post_process() to handle that.
|
|
'relativeUrls' => false,
|
|
);
|
|
|
|
if ($themedesigner) {
|
|
// Add the sourceMap inline to ensure that it is atomically generated.
|
|
$options['sourceMap'] = true;
|
|
$options['sourceMapBasepath'] = $CFG->dirroot;
|
|
$options['sourceMapRootpath'] = $CFG->wwwroot;
|
|
}
|
|
|
|
// Instantiate the compiler.
|
|
$compiler = new core_lessc($options);
|
|
|
|
try {
|
|
$compiler->parse_file_content($themelessfile);
|
|
|
|
// Get the callbacks.
|
|
$compiler->parse($this->get_extra_less_code());
|
|
$compiler->ModifyVars($this->get_less_variables());
|
|
|
|
// Compile the CSS.
|
|
$compiled = $compiler->getCss();
|
|
|
|
} catch (Less_Exception_Parser $e) {
|
|
$compiled = false;
|
|
debugging('Error while compiling LESS ' . $lessfile . ' file: ' . $e->getMessage(), DEBUG_DEVELOPER);
|
|
}
|
|
|
|
// Try to save memory.
|
|
$compiler = null;
|
|
unset($compiler);
|
|
|
|
return $compiled;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
|
|
// Set-up the compiler.
|
|
$compiler = new core_scss();
|
|
$compiler->prepend_raw_scss($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() {
|
|
$configs = [$this] + $this->parent_configs;
|
|
$css = '';
|
|
|
|
foreach ($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 LESS variables to use when compiling.
|
|
*
|
|
* @return array Where keys are the variable names (omitting the @), and the values are the value.
|
|
*/
|
|
protected function get_less_variables() {
|
|
$variables = array();
|
|
|
|
// Getting all the candidate functions.
|
|
$candidates = array();
|
|
foreach ($this->parent_configs as $parent_config) {
|
|
if (!isset($parent_config->lessvariablescallback)) {
|
|
continue;
|
|
}
|
|
$candidates[] = $parent_config->lessvariablescallback;
|
|
}
|
|
$candidates[] = $this->lessvariablescallback;
|
|
|
|
// Calling the functions.
|
|
foreach ($candidates as $function) {
|
|
if (function_exists($function)) {
|
|
$vars = $function($this);
|
|
if (!is_array($vars)) {
|
|
debugging('Callback ' . $function . ' did not return an array() as expected', DEBUG_DEVELOPER);
|
|
continue;
|
|
}
|
|
$variables = array_merge($variables, $vars);
|
|
}
|
|
}
|
|
|
|
return $variables;
|
|
}
|
|
|
|
/**
|
|
* Return extra LESS code to add when compiling.
|
|
*
|
|
* This is intended to be used by themes to inject some LESS code
|
|
* before it gets compiled. If you want to inject variables you
|
|
* should use {@link self::get_less_variables()}.
|
|
*
|
|
* @return string The LESS code to inject.
|
|
*/
|
|
protected function get_extra_less_code() {
|
|
$content = '';
|
|
|
|
// Getting all the candidate functions.
|
|
$candidates = array();
|
|
foreach ($this->parent_configs as $parent_config) {
|
|
if (!isset($parent_config->extralesscallback)) {
|
|
continue;
|
|
}
|
|
$candidates[] = $parent_config->extralesscallback;
|
|
}
|
|
$candidates[] = $this->extralesscallback;
|
|
|
|
// Calling the functions.
|
|
foreach ($candidates as $function) {
|
|
if (function_exists($function)) {
|
|
$content .= "\n/** Extra LESS from $function **/\n" . $function($this) . "\n";
|
|
}
|
|
}
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
protected function get_extra_scss_code() {
|
|
$content = '';
|
|
|
|
// Getting all the candidate functions.
|
|
$candidates = array();
|
|
foreach ($this->parent_configs as $parent_config) {
|
|
if (!isset($parent_config->extrascsscallback)) {
|
|
continue;
|
|
}
|
|
$candidates[] = $parent_config->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.
|
|
*/
|
|
protected function get_pre_scss_code() {
|
|
$content = '';
|
|
|
|
// Getting all the candidate functions.
|
|
$candidates = array();
|
|
foreach ($this->parent_configs as $parent_config) {
|
|
if (!isset($parent_config->prescsscallback)) {
|
|
continue;
|
|
}
|
|
$candidates[] = $parent_config->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 $content;
|
|
}
|
|
|
|
/**
|
|
* Get the SCSS property.
|
|
*
|
|
* This resolves whether a SCSS file (or content) has to be used when generating
|
|
* the stylesheet for the theme. It will look at parents themes and check the
|
|
* SCSS properties there.
|
|
*
|
|
* @return False when SCSS is not used.
|
|
* An array with the import paths, and the path to the SCSS file or Closure as second.
|
|
*/
|
|
public function get_scss_property() {
|
|
if ($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 = $this->csspostprocess;
|
|
if (function_exists($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 Object $csstree The parsed CSS tree structure to flip.
|
|
* @return void
|
|
*/
|
|
protected function rtlize($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 $svg|null Should SVG images also be looked for? If null, resorts to $CFG->svgicons if that is set; falls back to
|
|
* auto-detection of browser support otherwise
|
|
* @return string full file path
|
|
*/
|
|
public function resolve_image_location($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('_', $component, 2);
|
|
|
|
if ($imagefile = $this->image_exists("$this->dir/pix_plugins/$type/$plugin/$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_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() {
|
|
global $CFG;
|
|
if ($this->usesvg === null) {
|
|
|
|
if (!isset($CFG->svgicons)) {
|
|
$this->usesvg = core_useragent::supports_svg();
|
|
} else {
|
|
// Force them on/off depending upon the setting.
|
|
$this->usesvg = (bool)$CFG->svgicons;
|
|
}
|
|
}
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
debugging('Can not find layout file for: ' . $pagelayout);
|
|
// fallback to standard normal layout
|
|
return "$CFG->dirroot/theme/base/layout/general.php";
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
$regionstring = get_string('region-' . $region, 'theme_' . $theme);
|
|
// A name exists in this theme, so use it
|
|
if (substr($regionstring, 0, 1) != '[') {
|
|
return $regionstring;
|
|
}
|
|
|
|
// Otherwise, try to find one elsewhere
|
|
// Check parents, if any
|
|
foreach ($this->parents as $parentthemename) {
|
|
$regionstring = get_string('region-' . $region, 'theme_' . $parentthemename);
|
|
if (substr($regionstring, 0, 1) != '[') {
|
|
return $regionstring;
|
|
}
|
|
}
|
|
|
|
// 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.
|
|
*
|
|
* @return string|null
|
|
*/
|
|
public function get_css_tree_post_processor() {
|
|
$configs = [$this] + $this->parent_configs;
|
|
foreach ($configs as $config) {
|
|
if (!empty($config->csstreepostprocessor) && is_callable($config->csstreepostprocessor)) {
|
|
return $config->csstreepostprocessor;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* 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() {
|
|
$this->opencontainers = null;
|
|
}
|
|
|
|
/**
|
|
* Adds an entry to the log.
|
|
*
|
|
* @param string $action The name of the action
|
|
* @param string $type The type of action
|
|
*/
|
|
protected function log($action, $type) {
|
|
$this->log[] = '<li>' . $action . ' ' . $type . ' at:' .
|
|
format_backtrace(debug_backtrace()) . '</li>';
|
|
}
|
|
|
|
/**
|
|
* Outputs the log's contents as a HTML list.
|
|
*
|
|
* @return string HTML list of the log
|
|
*/
|
|
protected function output_log() {
|
|
return '<ul>' . implode("\n", $this->log) . '</ul>';
|
|
}
|
|
}
|
|
|