3 // This file is part of Moodle - http://moodle.org/
5 // Moodle is free software: you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation, either version 3 of the License, or
8 // (at your option) any later version.
10 // Moodle is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
19 * This file is responsible for serving of individual style sheets in designer mode.
22 * @copyright 2009 Petr Skoda (skodak) {@link http://skodak.org}
23 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
27 define('ABORT_AFTER_CONFIG', true);
28 require('../config.php'); // this stops immediately at the beginning of lib/setup.php
30 $themename = min_optional_param('theme', 'standard', 'SAFEDIR');
31 $type = min_optional_param('type', 'all', 'SAFEDIR');
32 $subtype = min_optional_param('subtype', '', 'SAFEDIR');
33 $sheet = min_optional_param('sheet', '', 'SAFEDIR');
35 if (!defined('THEME_DESIGNER_CACHE_LIFETIME')) {
36 define('THEME_DESIGNER_CACHE_LIFETIME', 4); // this can be also set in config.php
39 if (file_exists("$CFG->dirroot/theme/$themename/config.php")) {
41 } else if (!empty($CFG->themedir) and file_exists("$CFG->themedir/$themename/config.php")) {
47 // no gzip compression when debugging
49 $candidatesheet = "$CFG->dataroot/cache/theme/$themename/designer.ser";
51 if (!file_exists($candidatesheet)) {
55 if (!$css = file_get_contents($candidatesheet)) {
59 $css = unserialize($css);
62 send_ie_css($themename, $css);
64 } else if ($type === 'plugin') {
65 if (isset($css['plugins'][$subtype])) {
66 send_uncached_css($css['plugins'][$subtype]);
69 } else if ($type === 'parent') {
70 if (isset($css['parents'][$subtype][$sheet])) {
71 send_uncached_css($css['parents'][$subtype][$sheet], 30); // parent sheets are not supposed to change much, right?
74 } else if ($type === 'theme') {
75 if (isset($css['theme'][$sheet])) {
76 send_uncached_css($css['theme'][$sheet]);
81 //=================================================================================
82 //=== utility functions ==
83 // we are not using filelib because we need to fine tune all header
84 // parameters to get the best performance.
86 function send_uncached_css($css) {
87 header('Content-Disposition: inline; filename="styles_debug.php"');
88 header('Last-Modified: '. gmdate('D, d M Y H:i:s', time()) .' GMT');
89 header('Expires: '. gmdate('D, d M Y H:i:s', time() + THEME_DESIGNER_CACHE_LIFETIME) .' GMT');
91 header('Accept-Ranges: none');
92 header('Content-Type: text/css');
93 //header('Content-Length: '.strlen($css));
99 function css_not_found() {
100 header('HTTP/1.0 404 not found');
101 die('CSS was not found, sorry.');
104 function send_ie_css($themename, $css) {
105 $output = "/** Unfortunately IE6/7/8 does not support more than 31 CSS files, which means we have to use some ugly hacks :-( **/\n";
106 foreach ($css['plugins'] as $plugin=>$unused) {
107 $output .= "@import url(styles_debug.php?theme=$themename&type=plugin&subtype=$plugin);\n";
109 foreach ($css['parents'] as $parent=>$sheets) {
110 foreach ($sheets as $sheet=>$unused2) {
111 $output .= "@import url(styles_debug.php?theme=$themename&type=parent&subtype=$parent&sheet=$sheet);\n";
114 foreach ($css['theme'] as $sheet=>$unused) {
115 $output .= "@import url(styles_debug.php?theme=$themename&type=theme&sheet=$sheet);\n";
118 header('Content-Disposition: inline; filename="styles_debug.php"');
119 header('Last-Modified: '. gmdate('D, d M Y H:i:s', time()) .' GMT');
120 header('Expires: '. gmdate('D, d M Y H:i:s', time() + THEME_DESIGNER_CACHE_LIFETIME) .' GMT');
122 header('Accept-Ranges: none');
123 header('Content-Type: text/css');
124 //header('Content-Length: '.strlen($output));