theme/index.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   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.
   9 //
  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.
  14 //
  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/>.
  17
  18 /**
  19  * This page prvides the Administration -> ... -> Theme selector UI.
  20  */
  21
  22 require_once(dirname(__FILE__) . '/../config.php');
  23 require_once($CFG->libdir . '/adminlib.php');
  24
  25 $choose = optional_param('choose', '', PARAM_PLUGIN);
  26 $reset  = optional_param('reset', 0, PARAM_BOOL);
  27 $device = optional_param('device', '', PARAM_TEXT);
  28
  29 admin_externalpage_setup('themeselector');
  30
  31 if (!empty($device)) {
  32     // Make sure the device requested is valid
  33     $devices = get_device_type_list();
  34     if (!in_array($device, $devices)) {
  35         // The provided device isn't a valid device throw an error
  36         print_error('invaliddevicetype');
  37     }
  38 }
  39
  40 unset($SESSION->theme);
  41
  42 if ($reset and confirm_sesskey()) {
  43     theme_reset_all_caches();
  44
  45 } else if ($choose && $device && confirm_sesskey()) {
  46
  47     // Load the theme to make sure it is valid.
  48     $theme = theme_config::load($choose);
  49     // Get the config argument for the chosen device.
  50     $themename = get_device_cfg_var_name($device);
  51     set_config($themename, $theme->name);
  52
  53     // Create a new page for the display of the themes readme.
  54     // This ensures that the readme page is shown using the new theme.
  55     $confirmpage = new moodle_page();
  56     $confirmpage->set_context($PAGE->context);
  57     $confirmpage->set_url($PAGE->url);
  58     $confirmpage->set_pagelayout($PAGE->pagelayout);
  59     $confirmpage->set_pagetype($PAGE->pagetype);
  60     $confirmpage->set_title($PAGE->title);
  61     $confirmpage->set_heading($PAGE->heading);
  62
  63     // Get the core renderer for the new theme.
  64     $output = $confirmpage->get_renderer('core');
  65
  66     echo $output->header();
  67     echo $output->heading(get_string('themesaved'));
  68     echo $output->box_start();
  69     echo format_text(get_string('choosereadme', 'theme_'.$theme->name), FORMAT_MOODLE);
  70     echo $output->box_end();
  71     echo $output->continue_button($CFG->wwwroot . '/theme/index.php');
  72     echo $output->footer();
  73     exit;
  74 }
  75
  76 // Otherwise, show either a list of devices, or is enabledevicedetection set to no or a
  77 // device is specified show a list of themes.
  78
  79 echo $OUTPUT->header('themeselector');
  80 echo $OUTPUT->heading(get_string('themes'));
  81
  82 echo $OUTPUT->single_button(new moodle_url('index.php', array('sesskey' => sesskey(), 'reset' => 1)), get_string('themeresetcaches', 'admin'));
  83
  84 $table = new html_table();
  85 $table->data = array();
  86 if (!empty($CFG->enabledevicedetection) && empty($device)) {
  87     // Display a list of devices that a user can select a theme for.
  88
  89     $strthemenotselected = get_string('themenoselected', 'admin');
  90     $strthemeselect = get_string('themeselect', 'admin');
  91
  92     // Display the device selection screen
  93     $table->id = 'admindeviceselector';
  94     $table->head = array(get_string('devicetype', 'admin'), get_string('theme'), get_string('info'));
  95
  96     $devices = get_device_type_list();
  97     foreach ($devices as $device) {
  98
  99         $headingthemename = ''; // To output the picked theme name when needed
 100         $themename = get_selected_theme_for_device_type($device);
 101         if (!$themename && $device == 'default') {
 102             $themename = theme_config::DEFAULT_THEME;
 103         }
 104
 105         $screenshotcell = $strthemenotselected;
 106         if ($themename) {
 107             // Check the theme exists
 108             $themename = clean_param($themename, PARAM_THEME);
 109             if (empty($themename)) {
 110                 // Likely the theme has been deleted
 111                 unset_config(get_device_cfg_var_name($device));
 112             } else {
 113                 $strthemename = get_string('pluginname', 'theme_'.$themename);
 114                 // link to the screenshot, now mandatory - the image path is hardcoded because we need image from other themes, not the current one
 115                 $screenshoturl = new moodle_url('/theme/image.php', array('theme' => $themename, 'image' => 'screenshot', 'component' => 'theme'));
 116                 // Contents of the screenshot/preview cell.
 117                 $screenshotcell = html_writer::empty_tag('img', array('src' => $screenshoturl, 'alt' => $strthemename));
 118                 // Show the name of the picked theme
 119                 $headingthemename = $OUTPUT->heading($strthemename, 3);
 120             }
 121         }
 122
 123         $deviceurl = new moodle_url('/theme/index.php', array('device' => $device, 'sesskey' => sesskey()));
 124         $select = new single_button($deviceurl, $strthemeselect, 'get');
 125
 126         $table->data[] = array(
 127             $device,
 128             $screenshotcell,
 129             $headingthemename . $OUTPUT->render($select)
 130         );
 131     }
 132 } else {
 133     // Either a device has been selected of $CFG->enabledevicedetection is off so display a list
 134     // of themes to select.
 135
 136     if (empty($device)) {
 137         // if $CFG->enabledevicedetection is off this will return 'default'
 138         $device = get_device_type();
 139     }
 140
 141     $table->id = 'adminthemeselector';
 142     $table->head = array(get_string('theme'), get_string('info'));
 143
 144     $themes = get_plugin_list('theme');
 145
 146     foreach ($themes as $themename => $themedir) {
 147
 148         // Load the theme config.
 149         try {
 150             $theme = theme_config::load($themename);
 151         } catch (Exception $e) {
 152             // Bad theme, just skip it for now.
 153             continue;
 154         }
 155         if ($themename !== $theme->name) {
 156             //obsoleted or broken theme, just skip for now
 157             continue;
 158         }
 159         if (empty($CFG->themedesignermode) && $theme->hidefromselector) {
 160             // The theme doesn't want to be shown in the theme selector and as theme
 161             // designer mode is switched off we will respect that decision.
 162             continue;
 163         }
 164         $strthemename = get_string('pluginname', 'theme_'.$themename);
 165
 166         // Build the table row, and also a list of items to go in the second cell.
 167         $row = array();
 168         $infoitems = array();
 169         $rowclasses = array();
 170
 171         // Set up bools whether this theme is chosen either main or legacy
 172         $ischosentheme = ($themename == get_selected_theme_for_device_type($device));
 173
 174         if ($ischosentheme) {
 175             // Is the chosen main theme
 176             $rowclasses[] = 'selectedtheme';
 177         }
 178
 179         // link to the screenshot, now mandatory - the image path is hardcoded because we need image from other themes, not the current one
 180         $screenshotpath = new moodle_url('/theme/image.php', array('theme'=>$themename, 'image'=>'screenshot', 'component'=>'theme'));
 181         // Contents of the first screenshot/preview cell.
 182         $row[] = html_writer::empty_tag('img', array('src'=>$screenshotpath, 'alt'=>$strthemename));
 183         // Contents of the second cell.
 184         $infocell = $OUTPUT->heading($strthemename, 3);
 185
 186         // Button to choose this as the main theme
 187         $maintheme = new single_button(new moodle_url('/theme/index.php', array('device' => $device, 'choose' => $themename, 'sesskey' => sesskey())), get_string('usetheme'), 'get');
 188         $maintheme->disabled = $ischosentheme;
 189         $infocell .= $OUTPUT->render($maintheme);
 190
 191         $row[] = $infocell;
 192
 193         $table->data[$themename] = $row;
 194         $table->rowclasses[$themename] = join(' ', $rowclasses);
 195     }
 196 }
 197
 198 echo html_writer::table($table);
 199
 200 echo $OUTPUT->footer();