/**
* Work out the theme this page should use.
*
* This depends on numerous $CFG settings, and the properties of this page.
*
* @return string the name of the theme that should be used on this page.
*/
protected function resolve_theme()
{
global $CFG, $USER, $SESSION;
if (empty($CFG->themeorder)) {
$themeorder = array('course', 'category', 'session', 'user', 'site');
} else {
$themeorder = $CFG->themeorder;
// Just in case, make sure we always use the site theme if nothing else matched.
$themeorder[] = 'site';
}
$mnetpeertheme = '';
if (isloggedin() and isset($CFG->mnet_localhost_id) and $USER->mnethostid != $CFG->mnet_localhost_id) {
require_once $CFG->dirroot . '/mnet/peer.php';
$mnetpeer = new mnet_peer();
$mnetpeer->set_id($USER->mnethostid);
if ($mnetpeer->force_theme == 1 && $mnetpeer->theme != '') {
$mnetpeertheme = $mnetpeer->theme;
}
}
$devicetheme = core_useragent::get_device_type_theme($this->devicetypeinuse);
// The user is using another device than default, and we have a theme for that, we should use it.
$hascustomdevicetheme = core_useragent::DEVICETYPE_DEFAULT != $this->devicetypeinuse && !empty($devicetheme);
foreach ($themeorder as $themetype) {
switch ($themetype) {
case 'course':
if (!empty($CFG->allowcoursethemes) && !empty($this->_course->theme) && !$hascustomdevicetheme) {
return $this->_course->theme;
}
break;
case 'category':
if (!empty($CFG->allowcategorythemes) && !$hascustomdevicetheme) {
$categories = $this->categories;
foreach ($categories as $category) {
if (!empty($category->theme)) {
return $category->theme;
}
}
}
break;
case 'session':
if (!empty($SESSION->theme)) {
return $SESSION->theme;
}
break;
case 'user':
if (!empty($CFG->allowuserthemes) && !empty($USER->theme) && !$hascustomdevicetheme) {
if ($mnetpeertheme) {
return $mnetpeertheme;
} else {
return $USER->theme;
}
}
break;
case 'site':
if ($mnetpeertheme) {
return $mnetpeertheme;
}
// First try for the device the user is using.
if (!empty($devicetheme)) {
return $devicetheme;
}
// Next try for the default device (as a fallback).
$devicetheme = core_useragent::get_device_type_theme(core_useragent::DEVICETYPE_DEFAULT);
if (!empty($devicetheme)) {
return $devicetheme;
}
// The default device theme isn't set up - use the overall default theme.
return theme_config::DEFAULT_THEME;
}
}
// We should most certainly have resolved a theme by now. Something has gone wrong.
debugging('Error resolving the theme to use for this page.', DEBUG_DEVELOPER);
return theme_config::DEFAULT_THEME;
}
if ($themename !== $theme->name) {
// Obsoleted or broken theme, just skip for now.
continue;
}
if (empty($CFG->themedesignermode) && $theme->hidefromselector) {
// The theme doesn't want to be shown in the theme selector and as theme
// designer mode is switched off we will respect that decision.
continue;
}
$strthemename = get_string('pluginname', 'theme_' . $themename);
// Build the table row, and also a list of items to go in the second cell.
$row = array();
$infoitems = array();
$rowclasses = array();
// Set up bools whether this theme is chosen either main or legacy.
$ischosentheme = $themename == core_useragent::get_device_type_theme($device);
if ($ischosentheme) {
// Is the chosen main theme.
$rowclasses[] = 'selectedtheme';
}
// Link to the screenshot, now mandatory - the image path is hardcoded because we need image from other themes,
// not the current one.
$screenshotpath = new moodle_url('/theme/image.php', array('theme' => $themename, 'image' => 'screenshot', 'component' => 'theme'));
// Contents of the first screenshot/preview cell.
$row[] = html_writer::empty_tag('img', array('src' => $screenshotpath, 'alt' => $strthemename));
// Contents of the second cell.
$infocell = $OUTPUT->heading($strthemename, 3);
if ($themelocked) {
$infocell .= html_writer::div(get_string('configoverride', 'admin'), 'alert alert-info');
}
// Button to choose this as the main theme or unset this theme for devices other then default.
/**
* Returns the theme selected for a particular device or false if none selected.
*
* @deprecated since 2.6
* @param string $devicetype
* @return string|false The name of the theme to use for the device or the false if not set
*/
function get_selected_theme_for_device_type($devicetype = null)
{
debugging('get_selected_theme_for_device_type has been deprecated, please update your code to use core_useragent instead.', DEBUG_DEVELOPER);
return core_useragent::get_device_type_theme($devicetype);
}
