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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
namespace theme_ilb\output;
use coding_exception;
use html_writer;
use tabobject;
use tabtree;
use custom_menu_item;
use custom_menu;
use block_contents;
use navigation_node;
use action_link;
use stdClass;
use moodle_url;
use preferences_groups;
use action_menu;
use help_icon;
use single_button;
use context_course;
use pix_icon;
defined('MOODLE_INTERNAL') || die;
/**
* Renderers to align Moodle's HTML with that expected by Bootstrap
*
* @package theme_ilb
* @copyright 2012 Bas Brands, www.basbrands.nl
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class core_renderer extends \core_renderer {
/** @var custom_menu_item language The language menu if created */
protected $language = null;
/**
* Outputs the opening section of a box.
*
* @param string $classes A space-separated list of CSS classes
* @param string $id An optional ID
* @param array $attributes An array of other attributes to give the box.
* @return string the HTML to output.
*/
public function box_start($classes = 'generalbox', $id = null, $attributes = array()) {
if (is_array($classes)) {
$classes = implode(' ', $classes);
}
return parent::box_start($classes . ' py-3', $id, $attributes);
}
/**
* Wrapper for header elements.
*
* @return string HTML to display the main header.
*/
public function full_header() {
global $PAGE;
$header = new stdClass();
$header->settingsmenu = $this->context_header_settings_menu();
$header->contextheader = $this->context_header();
$header->hasnavbar = empty($PAGE->layout_options['nonavbar']);
$header->navbar = $this->navbar();
$header->pageheadingbutton = $this->page_heading_button();
$header->courseheader = $this->course_header();
return $this->render_from_template('theme_ilb/header', $header);
}
/**
* The standard tags that should be included in the <head> tag
* including a meta description for the front page
*
* @return string HTML fragment.
*/
public function standard_head_html() {
global $SITE, $PAGE;
$output = parent::standard_head_html();
if ($PAGE->pagelayout == 'frontpage') {
$summary = s(strip_tags(format_text($SITE->summary, FORMAT_HTML)));
if (!empty($summary)) {
$output .= "<meta name=\"description\" content=\"$summary\" />\n";
}
}
return $output;
}
/*
* This renders the navbar.
* Uses bootstrap compatible html.
*/
public function navbar() {
return $this->render_from_template('core/navbar', $this->page->navbar);
}
/**
* We don't like these...
*
*/
public function edit_button(moodle_url $url) {
return '';
}
/**
* Override to inject the logo.
*
* @param array $headerinfo The header info.
* @param int $headinglevel What level the 'h' tag will be.
* @return string HTML for the header bar.
*/
public function context_header($headerinfo = null, $headinglevel = 1) {
global $SITE;
if ($this->should_display_main_logo($headinglevel)) {
$sitename = format_string($SITE->fullname, true, array('context' => context_course::instance(SITEID)));
return html_writer::div(html_writer::empty_tag('img', [
'src' => $this->get_logo_url(null, 150), 'alt' => $sitename, 'class' => 'img-fluid']), 'logo');
}
return parent::context_header($headerinfo, $headinglevel);
}
/**
* Get the compact logo URL.
*
* @return string
*/
public function get_compact_logo_url($maxwidth = 100, $maxheight = 100) {
return parent::get_compact_logo_url(null, 70);
}
/**
* Whether we should display the main logo.
*
* @return bool
*/
public function should_display_main_logo($headinglevel = 1) {
global $PAGE;
// Only render the logo if we're on the front page or login page and the we have a logo.
$logo = $this->get_logo_url();
if ($headinglevel == 1 && !empty($logo)) {
if ($PAGE->pagelayout == 'frontpage' || $PAGE->pagelayout == 'login') {
return true;
}
}
return false;
}
/**
* Whether we should display the logo in the navbar.
*
* We will when there are no main logos, and we have compact logo.
*
* @return bool
*/
public function should_display_navbar_logo() {
$logo = $this->get_compact_logo_url();
return !empty($logo) && !$this->should_display_main_logo();
}
/*
* Overriding the custom_menu function ensures the custom menu is
* always shown, even if no menu items are configured in the global
* theme settings page.
*/
public function custom_menu($custommenuitems = '') {
global $CFG;
if (empty($custommenuitems) && !empty($CFG->custommenuitems)) {
$custommenuitems = $CFG->custommenuitems;
}
$custommenu = new custom_menu($custommenuitems, current_language());
return $this->render_custom_menu($custommenu);
}
/**
* We want to show the custom menus as a list of links in the footer on small screens.
* Just return the menu object exported so we can render it differently.
*/
public function custom_menu_flat() {
global $CFG;
$custommenuitems = '';
if (empty($custommenuitems) && !empty($CFG->custommenuitems)) {
$custommenuitems = $CFG->custommenuitems;
}
$custommenu = new custom_menu($custommenuitems, current_language());
$langs = get_string_manager()->get_list_of_translations();
$haslangmenu = $this->lang_menu() != '';
if ($haslangmenu) {
$strlang = get_string('language');
$currentlang = current_language();
if (isset($langs[$currentlang])) {
$currentlang = $langs[$currentlang];
} else {
$currentlang = $strlang;
}
$this->language = $custommenu->add($currentlang, new moodle_url('#'), $strlang, 10000);
foreach ($langs as $langtype => $langname) {
$this->language->add($langname, new moodle_url($this->page->url, array('lang' => $langtype)), $langname);
}
}
return $custommenu->export_for_template($this);
}
/*
* This renders the bootstrap top menu.
*
* This renderer is needed to enable the Bootstrap style navigation.
*/
protected function render_custom_menu(custom_menu $menu) {
global $CFG;
$langs = get_string_manager()->get_list_of_translations();
$haslangmenu = $this->lang_menu() != '';
if (!$menu->has_children() && !$haslangmenu) {
return '';
}
if ($haslangmenu) {
$strlang = get_string('language');
$currentlang = current_language();
if (isset($langs[$currentlang])) {
$currentlang = $langs[$currentlang];
} else {
$currentlang = $strlang;
}
$this->language = $menu->add($currentlang, new moodle_url('#'), $strlang, 10000);
foreach ($langs as $langtype => $langname) {
$this->language->add($langname, new moodle_url($this->page->url, array('lang' => $langtype)), $langname);
}
}
$content = '';
foreach ($menu->get_children() as $item) {
$context = $item->export_for_template($this);
$content .= $this->render_from_template('core/custom_menu_item', $context);
}
return $content;
}
/**
* This code renders the navbar button to control the display of the custom menu
* on smaller screens.
*
* Do not display the button if the menu is empty.
*
* @return string HTML fragment
*/
public function navbar_button() {
global $CFG;
if (empty($CFG->custommenuitems) && $this->lang_menu() == '') {
return '';
}
$iconbar = html_writer::tag('span', '', array('class' => 'icon-bar'));
$button = html_writer::tag('a', $iconbar . "\n" . $iconbar. "\n" . $iconbar, array(
'class' => 'btn btn-navbar',
'data-toggle' => 'collapse',
'data-target' => '.nav-collapse'
));
return $button;
}
/**
* Renders tabtree
*
* @param tabtree $tabtree
* @return string
*/
protected function render_tabtree(tabtree $tabtree) {
if (empty($tabtree->subtree)) {
return '';
}
$data = $tabtree->export_for_template($this);
return $this->render_from_template('core/tabtree', $data);
}
/**
* Renders tabobject (part of tabtree)
*
* This function is called from {@link core_renderer::render_tabtree()}
* and also it calls itself when printing the $tabobject subtree recursively.
*
* @param tabobject $tabobject
* @return string HTML fragment
*/
protected function render_tabobject(tabobject $tab) {
throw new coding_exception('Tab objects should not be directly rendered.');
}
/**
* Prints a nice side block with an optional header.
*
* @param block_contents $bc HTML for the content
* @param string $region the region the block is appearing in.
* @return string the HTML to be output.
*/
public function block(block_contents $bc, $region) {
$bc = clone($bc); // Avoid messing up the object passed in.
if (empty($bc->blockinstanceid) || !strip_tags($bc->title)) {
$bc->collapsible = block_contents::NOT_HIDEABLE;
}
$id = !empty($bc->attributes['id']) ? $bc->attributes['id'] : uniqid('block-');
$context = new stdClass();
$context->skipid = $bc->skipid;
$context->blockinstanceid = $bc->blockinstanceid;
$context->dockable = $bc->dockable;
$context->id = $id;
$context->hidden = $bc->collapsible == block_contents::HIDDEN;
$context->skiptitle = strip_tags($bc->title);
$context->showskiplink = !empty($context->skiptitle);
$context->arialabel = $bc->arialabel;
$context->ariarole = !empty($bc->attributes['role']) ? $bc->attributes['role'] : 'complementary';
$context->type = $bc->attributes['data-block'];
$context->title = $bc->title;
$context->content = $bc->content;
$context->annotation = $bc->annotation;
$context->footer = $bc->footer;
$context->hascontrols = !empty($bc->controls);
if ($context->hascontrols) {
$context->controls = $this->block_controls($bc->controls, $id);
}
return $this->render_from_template('core/block', $context);
}
/**
* Returns the CSS classes to apply to the body tag.
*
* @since Moodle 2.5.1 2.6
* @param array $additionalclasses Any additional classes to apply.
* @return string
*/
public function body_css_classes(array $additionalclasses = array()) {
return $this->page->bodyclasses . ' ' . implode(' ', $additionalclasses);
}
/**
* Renders preferences groups.
*
* @param preferences_groups $renderable The renderable
* @return string The output.
*/
public function render_preferences_groups(preferences_groups $renderable) {
return $this->render_from_template('core/preferences_groups', $renderable);
}
/**
* Renders an action menu component.
*
* @param action_menu $menu
* @return string HTML
*/
public function render_action_menu(action_menu $menu) {
// We don't want the class icon there!
foreach ($menu->get_secondary_actions() as $action) {
if ($action instanceof \action_menu_link && $action->has_class('icon')) {
$action->attributes['class'] = preg_replace('/(^|\s+)icon(\s+|$)/i', '', $action->attributes['class']);
}
}
if ($menu->is_empty()) {
return '';
}
$context = $menu->export_for_template($this);
return $this->render_from_template('core/action_menu', $context);
}
/**
* Implementation of user image rendering.
*
* @param help_icon $helpicon A help icon instance
* @return string HTML fragment
*/
protected function render_help_icon(help_icon $helpicon) {
$context = $helpicon->export_for_template($this);
return $this->render_from_template('core/help_icon', $context);
}
/**
* Renders a single button widget.
*
* This will return HTML to display a form containing a single button.
*
* @param single_button $button
* @return string HTML fragment
*/
protected function render_single_button(single_button $button) {
return $this->render_from_template('core/single_button', $button->export_for_template($this));
}
/**
* Renders the login form.
*
* @param \core_auth\output\login $form The renderable.
* @return string
*/
public function render_login(\core_auth\output\login $form) {
global $CFG, $SITE;
$context = $form->export_for_template($this);
// Override because rendering is not supported in template yet.
if ($CFG->rememberusername == 0) {
$context->cookieshelpiconformatted = $this->help_icon('cookiesenabledonlysession');
} else {
$context->cookieshelpiconformatted = $this->help_icon('cookiesenabled');
}
$context->errorformatted = $this->error_text($context->error);
$url = $this->get_logo_url();
if ($url) {
$url = $url->out(false);
}
$context->logourl = $url;
$context->sitename = format_string($SITE->fullname, true,
['context' => context_course::instance(SITEID), "escape" => false]);
return $this->render_from_template('core/loginform', $context);
}
/**
* Render the login signup form into a nice template for the theme.
*
* @param mform $form
* @return string
*/
public function render_login_signup_form($form) {
global $SITE;
$context = $form->export_for_template($this);
$url = $this->get_logo_url();
if ($url) {
$url = $url->out(false);
}
$context['logourl'] = $url;
$context['sitename'] = format_string($SITE->fullname, true,
['context' => context_course::instance(SITEID), "escape" => false]);
return $this->render_from_template('core/signup_form_layout', $context);
}
/**
* This is an optional menu that can be added to a layout by a theme. It contains the
* menu for the course administration, only on the course main page.
*
* @return string
*/
public function context_header_settings_menu() {
$context = $this->page->context;
$menu = new action_menu();
$items = $this->page->navbar->get_items();
$currentnode = end($items);
$showcoursemenu = false;
$showfrontpagemenu = false;
$showusermenu = false;
// We are on the course home page.
if (($context->contextlevel == CONTEXT_COURSE) &&
!empty($currentnode) &&
($currentnode->type == navigation_node::TYPE_COURSE || $currentnode->type == navigation_node::TYPE_SECTION)) {
$showcoursemenu = true;
}
$courseformat = course_get_format($this->page->course);
// This is a single activity course format, always show the course menu on the activity main page.
if ($context->contextlevel == CONTEXT_MODULE &&
!$courseformat->has_view_page()) {
$this->page->navigation->initialise();
$activenode = $this->page->navigation->find_active_node();
// If the settings menu has been forced then show the menu.
if ($this->page->is_settings_menu_forced()) {
$showcoursemenu = true;
} else if (!empty($activenode) && ($activenode->type == navigation_node::TYPE_ACTIVITY ||
$activenode->type == navigation_node::TYPE_RESOURCE)) {
// We only want to show the menu on the first page of the activity. This means
// the breadcrumb has no additional nodes.
if ($currentnode && ($currentnode->key == $activenode->key && $currentnode->type == $activenode->type)) {
$showcoursemenu = true;
}
}
}
// This is the site front page.
if ($context->contextlevel == CONTEXT_COURSE &&
!empty($currentnode) &&
$currentnode->key === 'home') {
$showfrontpagemenu = true;
}
// This is the user profile page.
if ($context->contextlevel == CONTEXT_USER &&
!empty($currentnode) &&
($currentnode->key === 'myprofile')) {
$showusermenu = true;
}
if ($showfrontpagemenu) {
$settingsnode = $this->page->settingsnav->find('frontpage', navigation_node::TYPE_SETTING);
if ($settingsnode) {
// Build an action menu based on the visible nodes from this navigation tree.
$skipped = $this->build_action_menu_from_navigation($menu, $settingsnode, false, true);
// We only add a list to the full settings menu if we didn't include every node in the short menu.
if ($skipped) {
$text = get_string('morenavigationlinks');
$url = new moodle_url('/course/admin.php', array('courseid' => $this->page->course->id));
$link = new action_link($url, $text, null, null, new pix_icon('t/edit', ''));
$menu->add_secondary_action($link);
}
}
} else if ($showcoursemenu) {
$settingsnode = $this->page->settingsnav->find('courseadmin', navigation_node::TYPE_COURSE);
if ($settingsnode) {
// Build an action menu based on the visible nodes from this navigation tree.
$skipped = $this->build_action_menu_from_navigation($menu, $settingsnode, false, true);
// We only add a list to the full settings menu if we didn't include every node in the short menu.
if ($skipped) {
$text = get_string('morenavigationlinks');
$url = new moodle_url('/course/admin.php', array('courseid' => $this->page->course->id));
$link = new action_link($url, $text, null, null, new pix_icon('t/edit', ''));
$menu->add_secondary_action($link);
}
}
} else if ($showusermenu) {
// Get the course admin node from the settings navigation.
$settingsnode = $this->page->settingsnav->find('useraccount', navigation_node::TYPE_CONTAINER);
if ($settingsnode) {
// Build an action menu based on the visible nodes from this navigation tree.
$this->build_action_menu_from_navigation($menu, $settingsnode);
}
}
return $this->render($menu);
}
/**
* This is an optional menu that can be added to a layout by a theme. It contains the
* menu for the most specific thing from the settings block. E.g. Module administration.
*
* @return string
*/
public function region_main_settings_menu() {
$context = $this->page->context;
$menu = new action_menu();
if ($context->contextlevel == CONTEXT_MODULE) {
$this->page->navigation->initialise();
$node = $this->page->navigation->find_active_node();
$buildmenu = false;
// If the settings menu has been forced then show the menu.
if ($this->page->is_settings_menu_forced()) {
$buildmenu = true;
} else if (!empty($node) && ($node->type == navigation_node::TYPE_ACTIVITY ||
$node->type == navigation_node::TYPE_RESOURCE)) {
$items = $this->page->navbar->get_items();
$navbarnode = end($items);
// We only want to show the menu on the first page of the activity. This means
// the breadcrumb has no additional nodes.
if ($navbarnode && ($navbarnode->key === $node->key && $navbarnode->type == $node->type)) {
$buildmenu = true;
}
}
if ($buildmenu) {
// Get the course admin node from the settings navigation.
$node = $this->page->settingsnav->find('modulesettings', navigation_node::TYPE_SETTING);
if ($node) {
// Build an action menu based on the visible nodes from this navigation tree.
$this->build_action_menu_from_navigation($menu, $node);
}
}
} else if ($context->contextlevel == CONTEXT_COURSECAT) {
// For course category context, show category settings menu, if we're on the course category page.
if ($this->page->pagetype === 'course-index-category') {
$node = $this->page->settingsnav->find('categorysettings', navigation_node::TYPE_CONTAINER);
if ($node) {
// Build an action menu based on the visible nodes from this navigation tree.
$this->build_action_menu_from_navigation($menu, $node);
}
}
} else {
$items = $this->page->navbar->get_items();
$navbarnode = end($items);
if ($navbarnode && ($navbarnode->key === 'participants')) {
$node = $this->page->settingsnav->find('users', navigation_node::TYPE_CONTAINER);
if ($node) {
// Build an action menu based on the visible nodes from this navigation tree.
$this->build_action_menu_from_navigation($menu, $node);
}
}
}
return $this->render($menu);
}
/**
* Take a node in the nav tree and make an action menu out of it.
* The links are injected in the action menu.
*
* @param action_menu $menu
* @param navigation_node $node
* @param boolean $indent
* @param boolean $onlytopleafnodes
* @return boolean nodesskipped - True if nodes were skipped in building the menu
*/
protected function build_action_menu_from_navigation(action_menu $menu,
navigation_node $node,
$indent = false,
$onlytopleafnodes = false) {
$skipped = false;
// Build an action menu based on the visible nodes from this navigation tree.
foreach ($node->children as $menuitem) {
if ($menuitem->display) {
if ($onlytopleafnodes && $menuitem->children->count()) {
$skipped = true;
continue;
}
if ($menuitem->action) {
if ($menuitem->action instanceof action_link) {
$link = $menuitem->action;
// Give preference to setting icon over action icon.
if (!empty($menuitem->icon)) {
$link->icon = $menuitem->icon;
}
} else {
$link = new action_link($menuitem->action, $menuitem->text, null, null, $menuitem->icon);
}
} else {
if ($onlytopleafnodes) {
$skipped = true;
continue;
}
$link = new action_link(new moodle_url('#'), $menuitem->text, null, ['disabled' => true], $menuitem->icon);
}
if ($indent) {
$link->add_class('ml-4');
}
if (!empty($menuitem->classes)) {
$link->add_class(implode(" ", $menuitem->classes));
}
$menu->add_secondary_action($link);
$skipped = $skipped || $this->build_action_menu_from_navigation($menu, $menuitem, true);
}
}
return $skipped;
}
/**
* Secure login info.
*
* @return string
*/
public function secure_login_info() {
return $this->login_info(false);
}
}