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   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * This file is responsible for serving of individual style sheets in designer mode.
  19   *
  20   * @package   core
  21   * @copyright 2009 Petr Skoda (skodak)  {@link http://skodak.org}
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  // Disable moodle specific debug messages and any errors in output,
  26  // comment out when debugging or better look into error log!
  27  define('NO_DEBUG_DISPLAY', true);
  28  define('NO_UPGRADE_CHECK', true);
  29  define('NO_MOODLE_COOKIES', true);
  30  
  31  require('../config.php');
  32  require_once($CFG->dirroot.'/lib/csslib.php');
  33  
  34  $themename = optional_param('theme', 'standard', PARAM_SAFEDIR);
  35  $type      = optional_param('type', '', PARAM_SAFEDIR);
  36  $subtype   = optional_param('subtype', '', PARAM_SAFEDIR);
  37  $sheet     = optional_param('sheet', '', PARAM_SAFEDIR);
  38  $usesvg    = optional_param('svg', 1, PARAM_BOOL);
  39  $rtl       = optional_param('rtl', false, PARAM_BOOL);
  40  
  41  if (file_exists("$CFG->dirroot/theme/$themename/config.php")) {
  42      // The theme exists in standard location - ok.
  43  } else if (!empty($CFG->themedir) and file_exists("$CFG->themedir/$themename/config.php")) {
  44      // Alternative theme location contains this theme - ok.
  45  } else {
  46      css_send_css_not_found();
  47  }
  48  
  49  $theme = theme_config::load($themename);
  50  $theme->force_svg_use($usesvg);
  51  $theme->set_rtl_mode($rtl);
  52  
  53  if ($type === 'editor') {
  54      $csscontent = $theme->get_css_content_editor();
  55      css_send_uncached_css($csscontent);
  56  }
  57  
  58  // We need some kind of caching here because otherwise the page navigation becomes
  59  // way too slow in theme designer mode. Feel free to create full cache definition later...
  60  $key = "$type $subtype $sheet $usesvg $rtl";
  61  $cache = cache::make_from_params(cache_store::MODE_APPLICATION, 'core', 'themedesigner', array('theme' => $themename));
  62  if ($content = $cache->get($key)) {
  63      if ($content['created'] > time() - THEME_DESIGNER_CACHE_LIFETIME) {
  64          $csscontent = $content['data'];
  65          css_send_uncached_css($csscontent);
  66      }
  67  }
  68  
  69  $csscontent = $theme->get_css_content_debug($type, $subtype, $sheet);
  70  $cache->set($key, array('data' => $csscontent, 'created' => time()));
  71  
  72  css_send_uncached_css($csscontent);