MDL-55224 core: Import PHP-CSS-Parser into core
[moodle.git] / theme / styles_debug.php
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78946b9b 1<?php
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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 *
574909ef 20 * @package core
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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
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25// Disable moodle specific debug messages and any errors in output,
26// comment out when debugging or better look into error log!
27define('NO_DEBUG_DISPLAY', true);
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28define('NO_UPGRADE_CHECK', true);
29define('NO_MOODLE_COOKIES', true);
73e504bc 30
98245a84 31require('../config.php');
0e641c74 32require_once($CFG->dirroot.'/lib/csslib.php');
78946b9b 33
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34$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);
29d73d27 39$chunk = optional_param('chunk', null, PARAM_INT);
d6b64d15 40
73e504bc 41if (file_exists("$CFG->dirroot/theme/$themename/config.php")) {
98245a84 42 // The theme exists in standard location - ok.
73e504bc 43} else if (!empty($CFG->themedir) and file_exists("$CFG->themedir/$themename/config.php")) {
98245a84 44 // Alternative theme location contains this theme - ok.
73e504bc 45} else {
0e641c74 46 css_send_css_not_found();
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47}
48
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49$theme = theme_config::load($themename);
50$theme->force_svg_use($usesvg);
78946b9b 51
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52if ($type === 'editor') {
53 $csscontent = $theme->get_css_content_editor();
54 css_send_uncached_css($csscontent);
2428de82 55}
78946b9b 56
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57$chunkurl = new moodle_url($CFG->httpswwwroot . '/theme/styles_debug.php', array('theme' => $themename,
58 'type' => $type, 'subtype' => $subtype, 'sheet' => $sheet, 'usesvg' => $usesvg));
59
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60// We need some kind of caching here because otherwise the page navigation becomes
61// way too slow in theme designer mode. Feel free to create full cache definition later...
62$key = "$type $subtype $sheet $usesvg";
63$cache = cache::make_from_params(cache_store::MODE_APPLICATION, 'core', 'themedesigner', array('theme' => $themename));
64if ($content = $cache->get($key)) {
65 if ($content['created'] > time() - THEME_DESIGNER_CACHE_LIFETIME) {
66 $csscontent = $content['data'];
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67
68 // We need to chunk the content.
69 if ($chunk !== null) {
70 $chunks = css_chunk_by_selector_count($csscontent, $chunkurl->out(false));
71 $csscontent = ($chunk === 0) ? end($chunks) : $chunks[$chunk - 1];
72 }
73
98245a84 74 css_send_uncached_css($csscontent);
71be124d 75 }
98245a84 76}
4399b9d5 77
98245a84 78$csscontent = $theme->get_css_content_debug($type, $subtype, $sheet);
98245a84 79$cache->set($key, array('data' => $csscontent, 'created' => time()));
78946b9b 80
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81// We need to chunk the content.
82if ($chunk !== null) {
83 // The chunks are ordered so that the last chunk is the one containing the @import, and so
84 // the first one to be included. All the other chunks are set in the array before that one.
85 // See {@link css_chunk_by_selector_count()} for more details.
86 $chunks = css_chunk_by_selector_count($csscontent, $chunkurl->out(false));
87 $csscontent = ($chunk === 0) ? end($chunks) : $chunks[$chunk - 1];
88}
89
98245a84 90css_send_uncached_css($csscontent);