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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/>.
/**
* Classes representing HTML elements, used by $OUTPUT methods
*
* Please see http://docs.moodle.org/en/Developement:How_Moodle_outputs_HTML
* for an overview.
*
* @package core
* @category output
* @copyright 2009 Tim Hunt
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Interface marking other classes as suitable for renderer_base::render()
*
* @copyright 2010 Petr Skoda (skodak) info@skodak.org
* @package core
* @category output
*/
interface renderable {
// intentionally empty
}
/**
* Interface marking other classes having the ability to export their data for use by templates.
*
* @copyright 2015 Damyon Wiese
* @package core
* @category output
* @since 2.9
*/
interface templatable {
/**
* Function to export the renderer data in a format that is suitable for a
* mustache template. This means:
* 1. No complex types - only stdClass, array, int, string, float, bool
* 2. Any additional info that is required for the template is pre-calculated (e.g. capability checks).
*
* @param renderer_base $output Used to do a final render of any components that need to be rendered for export.
* @return stdClass|array
*/
public function export_for_template(renderer_base $output);
}
/**
* Data structure representing a file picker.
*
* @copyright 2010 Dongsheng Cai
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class file_picker implements renderable {
/**
* @var stdClass An object containing options for the file picker
*/
public $options;
/**
* Constructs a file picker object.
*
* The following are possible options for the filepicker:
* - accepted_types (*)
* - return_types (FILE_INTERNAL)
* - env (filepicker)
* - client_id (uniqid)
* - itemid (0)
* - maxbytes (-1)
* - maxfiles (1)
* - buttonname (false)
*
* @param stdClass $options An object containing options for the file picker.
*/
public function __construct(stdClass $options) {
global $CFG, $USER, $PAGE;
require_once($CFG->dirroot. '/repository/lib.php');
$defaults = array(
'accepted_types'=>'*',
'return_types'=>FILE_INTERNAL,
'env' => 'filepicker',
'client_id' => uniqid(),
'itemid' => 0,
'maxbytes'=>-1,
'maxfiles'=>1,
'buttonname'=>false
);
foreach ($defaults as $key=>$value) {
if (empty($options->$key)) {
$options->$key = $value;
}
}
$options->currentfile = '';
if (!empty($options->itemid)) {
$fs = get_file_storage();
$usercontext = context_user::instance($USER->id);
if (empty($options->filename)) {
if ($files = $fs->get_area_files($usercontext->id, 'user', 'draft', $options->itemid, 'id DESC', false)) {
$file = reset($files);
}
} else {
$file = $fs->get_file($usercontext->id, 'user', 'draft', $options->itemid, $options->filepath, $options->filename);
}
if (!empty($file)) {
$options->currentfile = html_writer::link(moodle_url::make_draftfile_url($file->get_itemid(), $file->get_filepath(), $file->get_filename()), $file->get_filename());
}
}
// initilise options, getting files in root path
$this->options = initialise_filepicker($options);
// copying other options
foreach ($options as $name=>$value) {
if (!isset($this->options->$name)) {
$this->options->$name = $value;
}
}
}
}
/**
* Data structure representing a user picture.
*
* @copyright 2009 Nicolas Connault, 2010 Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Modle 2.0
* @package core
* @category output
*/
class user_picture implements renderable {
/**
* @var array List of mandatory fields in user record here. (do not include
* TEXT columns because it would break SELECT DISTINCT in MSSQL and ORACLE)
*/
protected static $fields = array('id', 'picture', 'firstname', 'lastname', 'firstnamephonetic', 'lastnamephonetic',
'middlename', 'alternatename', 'imagealt', 'email');
/**
* @var stdClass A user object with at least fields all columns specified
* in $fields array constant set.
*/
public $user;
/**
* @var int The course id. Used when constructing the link to the user's
* profile, page course id used if not specified.
*/
public $courseid;
/**
* @var bool Add course profile link to image
*/
public $link = true;
/**
* @var int Size in pixels. Special values are (true/1 = 100px) and
* (false/0 = 35px)
* for backward compatibility.
*/
public $size = 35;
/**
* @var bool Add non-blank alt-text to the image.
* Default true, set to false when image alt just duplicates text in screenreaders.
*/
public $alttext = true;
/**
* @var bool Whether or not to open the link in a popup window.
*/
public $popup = false;
/**
* @var string Image class attribute
*/
public $class = 'userpicture';
/**
* @var bool Whether to be visible to screen readers.
*/
public $visibletoscreenreaders = true;
/**
* @var bool Whether to include the fullname in the user picture link.
*/
public $includefullname = false;
/**
* @var mixed Include user authentication token. True indicates to generate a token for current user, and integer value
* indicates to generate a token for the user whose id is the value indicated.
*/
public $includetoken = false;
/**
* User picture constructor.
*
* @param stdClass $user user record with at least id, picture, imagealt, firstname and lastname set.
* It is recommended to add also contextid of the user for performance reasons.
*/
public function __construct(stdClass $user) {
global $DB;
if (empty($user->id)) {
throw new coding_exception('User id is required when printing user avatar image.');
}
// only touch the DB if we are missing data and complain loudly...
$needrec = false;
foreach (self::$fields as $field) {
if (!property_exists($user, $field)) {
$needrec = true;
debugging('Missing '.$field.' property in $user object, this is a performance problem that needs to be fixed by a developer. '
.'Please use user_picture::fields() to get the full list of required fields.', DEBUG_DEVELOPER);
break;
}
}
if ($needrec) {
$this->user = $DB->get_record('user', array('id'=>$user->id), self::fields(), MUST_EXIST);
} else {
$this->user = clone($user);
}
}
/**
* Returns a list of required user fields, useful when fetching required user info from db.
*
* In some cases we have to fetch the user data together with some other information,
* the idalias is useful there because the id would otherwise override the main
* id of the result record. Please note it has to be converted back to id before rendering.
*
* @param string $tableprefix name of database table prefix in query
* @param array $extrafields extra fields to be included in result (do not include TEXT columns because it would break SELECT DISTINCT in MSSQL and ORACLE)
* @param string $idalias alias of id field
* @param string $fieldprefix prefix to add to all columns in their aliases, does not apply to 'id'
* @return string
*/
public static function fields($tableprefix = '', array $extrafields = NULL, $idalias = 'id', $fieldprefix = '') {
if (!$tableprefix and !$extrafields and !$idalias) {
return implode(',', self::$fields);
}
if ($tableprefix) {
$tableprefix .= '.';
}
foreach (self::$fields as $field) {
if ($field === 'id' and $idalias and $idalias !== 'id') {
$fields[$field] = "$tableprefix$field AS $idalias";
} else {
if ($fieldprefix and $field !== 'id') {
$fields[$field] = "$tableprefix$field AS $fieldprefix$field";
} else {
$fields[$field] = "$tableprefix$field";
}
}
}
// add extra fields if not already there
if ($extrafields) {
foreach ($extrafields as $e) {
if ($e === 'id' or isset($fields[$e])) {
continue;
}
if ($fieldprefix) {
$fields[$e] = "$tableprefix$e AS $fieldprefix$e";
} else {
$fields[$e] = "$tableprefix$e";
}
}
}
return implode(',', $fields);
}
/**
* Extract the aliased user fields from a given record
*
* Given a record that was previously obtained using {@link self::fields()} with aliases,
* this method extracts user related unaliased fields.
*
* @param stdClass $record containing user picture fields
* @param array $extrafields extra fields included in the $record
* @param string $idalias alias of the id field
* @param string $fieldprefix prefix added to all columns in their aliases, does not apply to 'id'
* @return stdClass object with unaliased user fields
*/
public static function unalias(stdClass $record, array $extrafields = null, $idalias = 'id', $fieldprefix = '') {
if (empty($idalias)) {
$idalias = 'id';
}
$return = new stdClass();
foreach (self::$fields as $field) {
if ($field === 'id') {
if (property_exists($record, $idalias)) {
$return->id = $record->{$idalias};
}
} else {
if (property_exists($record, $fieldprefix.$field)) {
$return->{$field} = $record->{$fieldprefix.$field};
}
}
}
// add extra fields if not already there
if ($extrafields) {
foreach ($extrafields as $e) {
if ($e === 'id' or property_exists($return, $e)) {
continue;
}
$return->{$e} = $record->{$fieldprefix.$e};
}
}
return $return;
}
/**
* Works out the URL for the users picture.
*
* This method is recommended as it avoids costly redirects of user pictures
* if requests are made for non-existent files etc.
*
* @param moodle_page $page
* @param renderer_base $renderer
* @return moodle_url
*/
public function get_url(moodle_page $page, renderer_base $renderer = null) {
global $CFG;
if (is_null($renderer)) {
$renderer = $page->get_renderer('core');
}
// Sort out the filename and size. Size is only required for the gravatar
// implementation presently.
if (empty($this->size)) {
$filename = 'f2';
$size = 35;
} else if ($this->size === true or $this->size == 1) {
$filename = 'f1';
$size = 100;
} else if ($this->size > 100) {
$filename = 'f3';
$size = (int)$this->size;
} else if ($this->size >= 50) {
$filename = 'f1';
$size = (int)$this->size;
} else {
$filename = 'f2';
$size = (int)$this->size;
}
$defaulturl = $renderer->image_url('u/'.$filename); // default image
if ((!empty($CFG->forcelogin) and !isloggedin()) ||
(!empty($CFG->forceloginforprofileimage) && (!isloggedin() || isguestuser()))) {
// Protect images if login required and not logged in;
// also if login is required for profile images and is not logged in or guest
// do not use require_login() because it is expensive and not suitable here anyway.
return $defaulturl;
}
// First try to detect deleted users - but do not read from database for performance reasons!
if (!empty($this->user->deleted) or strpos($this->user->email, '@') === false) {
// All deleted users should have email replaced by md5 hash,
// all active users are expected to have valid email.
return $defaulturl;
}
// Did the user upload a picture?
if ($this->user->picture > 0) {
if (!empty($this->user->contextid)) {
$contextid = $this->user->contextid;
} else {
$context = context_user::instance($this->user->id, IGNORE_MISSING);
if (!$context) {
// This must be an incorrectly deleted user, all other users have context.
return $defaulturl;
}
$contextid = $context->id;
}
$path = '/';
if (clean_param($page->theme->name, PARAM_THEME) == $page->theme->name) {
// We append the theme name to the file path if we have it so that
// in the circumstance that the profile picture is not available
// when the user actually requests it they still get the profile
// picture for the correct theme.
$path .= $page->theme->name.'/';
}
// Set the image URL to the URL for the uploaded file and return.
$url = moodle_url::make_pluginfile_url(
$contextid, 'user', 'icon', null, $path, $filename, false, $this->includetoken);
$url->param('rev', $this->user->picture);
return $url;
}
if ($this->user->picture == 0 and !empty($CFG->enablegravatar)) {
// Normalise the size variable to acceptable bounds
if ($size < 1 || $size > 512) {
$size = 35;
}
// Hash the users email address
$md5 = md5(strtolower(trim($this->user->email)));
// Build a gravatar URL with what we know.
// Find the best default image URL we can (MDL-35669)
if (empty($CFG->gravatardefaulturl)) {
$absoluteimagepath = $page->theme->resolve_image_location('u/'.$filename, 'core');
if (strpos($absoluteimagepath, $CFG->dirroot) === 0) {
$gravatardefault = $CFG->wwwroot . substr($absoluteimagepath, strlen($CFG->dirroot));
} else {
$gravatardefault = $CFG->wwwroot . '/pix/u/' . $filename . '.png';
}
} else {
$gravatardefault = $CFG->gravatardefaulturl;
}
// If the currently requested page is https then we'll return an
// https gravatar page.
if (is_https()) {
return new moodle_url("https://secure.gravatar.com/avatar/{$md5}", array('s' => $size, 'd' => $gravatardefault));
} else {
return new moodle_url("http://www.gravatar.com/avatar/{$md5}", array('s' => $size, 'd' => $gravatardefault));
}
}
return $defaulturl;
}
}
/**
* Data structure representing a help icon.
*
* @copyright 2010 Petr Skoda (info@skodak.org)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class help_icon implements renderable, templatable {
/**
* @var string lang pack identifier (without the "_help" suffix),
* both get_string($identifier, $component) and get_string($identifier.'_help', $component)
* must exist.
*/
public $identifier;
/**
* @var string Component name, the same as in get_string()
*/
public $component;
/**
* @var string Extra descriptive text next to the icon
*/
public $linktext = null;
/**
* Constructor
*
* @param string $identifier string for help page title,
* string with _help suffix is used for the actual help text.
* string with _link suffix is used to create a link to further info (if it exists)
* @param string $component
*/
public function __construct($identifier, $component) {
$this->identifier = $identifier;
$this->component = $component;
}
/**
* Verifies that both help strings exists, shows debug warnings if not
*/
public function diag_strings() {
$sm = get_string_manager();
if (!$sm->string_exists($this->identifier, $this->component)) {
debugging("Help title string does not exist: [$this->identifier, $this->component]");
}
if (!$sm->string_exists($this->identifier.'_help', $this->component)) {
debugging("Help contents string does not exist: [{$this->identifier}_help, $this->component]");
}
}
/**
* Export this data so it can be used as the context for a mustache template.
*
* @param renderer_base $output Used to do a final render of any components that need to be rendered for export.
* @return array
*/
public function export_for_template(renderer_base $output) {
global $CFG;
$title = get_string($this->identifier, $this->component);
if (empty($this->linktext)) {
$alt = get_string('helpprefix2', '', trim($title, ". \t"));
} else {
$alt = get_string('helpwiththis');
}
$data = get_formatted_help_string($this->identifier, $this->component, false);
$data->alt = $alt;
$data->icon = (new pix_icon('help', $alt, 'core', ['class' => 'iconhelp']))->export_for_template($output);
$data->linktext = $this->linktext;
$data->title = get_string('helpprefix2', '', trim($title, ". \t"));
$options = [
'component' => $this->component,
'identifier' => $this->identifier,
'lang' => current_language()
];
// Debugging feature lets you display string identifier and component.
if (isset($CFG->debugstringids) && $CFG->debugstringids && optional_param('strings', 0, PARAM_INT)) {
$options['strings'] = 1;
}
$data->url = (new moodle_url('/help.php', $options))->out(false);
$data->ltr = !right_to_left();
return $data;
}
}
/**
* Data structure representing an icon font.
*
* @copyright 2016 Damyon Wiese
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core
* @category output
*/
class pix_icon_font implements templatable {
/**
* @var pix_icon $pixicon The original icon.
*/
private $pixicon = null;
/**
* @var string $key The mapped key.
*/
private $key;
/**
* @var bool $mapped The icon could not be mapped.
*/
private $mapped;
/**
* Constructor
*
* @param pix_icon $pixicon The original icon
*/
public function __construct(pix_icon $pixicon) {
global $PAGE;
$this->pixicon = $pixicon;
$this->mapped = false;
$iconsystem = \core\output\icon_system::instance();
$this->key = $iconsystem->remap_icon_name($pixicon->pix, $pixicon->component);
if (!empty($this->key)) {
$this->mapped = true;
}
}
/**
* Return true if this pix_icon was successfully mapped to an icon font.
*
* @return bool
*/
public function is_mapped() {
return $this->mapped;
}
/**
* Export this data so it can be used as the context for a mustache template.
*
* @param renderer_base $output Used to do a final render of any components that need to be rendered for export.
* @return array
*/
public function export_for_template(renderer_base $output) {
$pixdata = $this->pixicon->export_for_template($output);
$title = isset($this->pixicon->attributes['title']) ? $this->pixicon->attributes['title'] : '';
$alt = isset($this->pixicon->attributes['alt']) ? $this->pixicon->attributes['alt'] : '';
if (empty($title)) {
$title = $alt;
}
$data = array(
'extraclasses' => $pixdata['extraclasses'],
'title' => $title,
'alt' => $alt,
'key' => $this->key
);
return $data;
}
}
/**
* Data structure representing an icon subtype.
*
* @copyright 2016 Damyon Wiese
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core
* @category output
*/
class pix_icon_fontawesome extends pix_icon_font {
}
/**
* Data structure representing an icon.
*
* @copyright 2010 Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class pix_icon implements renderable, templatable {
/**
* @var string The icon name
*/
var $pix;
/**
* @var string The component the icon belongs to.
*/
var $component;
/**
* @var array An array of attributes to use on the icon
*/
var $attributes = array();
/**
* Constructor
*
* @param string $pix short icon name
* @param string $alt The alt text to use for the icon
* @param string $component component name
* @param array $attributes html attributes
*/
public function __construct($pix, $alt, $component='moodle', array $attributes = null) {
global $PAGE;
$this->pix = $pix;
$this->component = $component;
$this->attributes = (array)$attributes;
if (empty($this->attributes['class'])) {
$this->attributes['class'] = '';
}
// Set an additional class for big icons so that they can be styled properly.
if (substr($pix, 0, 2) === 'b/') {
$this->attributes['class'] .= ' iconsize-big';
}
// If the alt is empty, don't place it in the attributes, otherwise it will override parent alt text.
if (!is_null($alt)) {
$this->attributes['alt'] = $alt;
// If there is no title, set it to the attribute.
if (!isset($this->attributes['title'])) {
$this->attributes['title'] = $this->attributes['alt'];
}
} else {
unset($this->attributes['alt']);
}
if (empty($this->attributes['title'])) {
// Remove the title attribute if empty, we probably want to use the parent node's title
// and some browsers might overwrite it with an empty title.
unset($this->attributes['title']);
}
// Hide icons from screen readers that have no alt.
if (empty($this->attributes['alt'])) {
$this->attributes['aria-hidden'] = 'true';
}
}
/**
* Export this data so it can be used as the context for a mustache template.
*
* @param renderer_base $output Used to do a final render of any components that need to be rendered for export.
* @return array
*/
public function export_for_template(renderer_base $output) {
$attributes = $this->attributes;
$extraclasses = '';
foreach ($attributes as $key => $item) {
if ($key == 'class') {
$extraclasses = $item;
unset($attributes[$key]);
break;
}
}
$attributes['src'] = $output->image_url($this->pix, $this->component)->out(false);
$templatecontext = array();
foreach ($attributes as $name => $value) {
$templatecontext[] = array('name' => $name, 'value' => $value);
}
$title = isset($attributes['title']) ? $attributes['title'] : '';
if (empty($title)) {
$title = isset($attributes['alt']) ? $attributes['alt'] : '';
}
$data = array(
'attributes' => $templatecontext,
'extraclasses' => $extraclasses
);
return $data;
}
/**
* Much simpler version of export that will produce the data required to render this pix with the
* pix helper in a mustache tag.
*
* @return array
*/
public function export_for_pix() {
$title = isset($this->attributes['title']) ? $this->attributes['title'] : '';
if (empty($title)) {
$title = isset($this->attributes['alt']) ? $this->attributes['alt'] : '';
}
return [
'key' => $this->pix,
'component' => $this->component,
'title' => $title
];
}
}
/**
* Data structure representing an activity icon.
*
* The difference is that activity icons will always render with the standard icon system (no font icons).
*
* @copyright 2017 Damyon Wiese
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core
*/
class image_icon extends pix_icon {
}
/**
* Data structure representing an emoticon image
*
* @copyright 2010 David Mudrak
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class pix_emoticon extends pix_icon implements renderable {
/**
* Constructor
* @param string $pix short icon name
* @param string $alt alternative text
* @param string $component emoticon image provider
* @param array $attributes explicit HTML attributes
*/
public function __construct($pix, $alt, $component = 'moodle', array $attributes = array()) {
if (empty($attributes['class'])) {
$attributes['class'] = 'emoticon';
}
parent::__construct($pix, $alt, $component, $attributes);
}
}
/**
* Data structure representing a simple form with only one button.
*
* @copyright 2009 Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class single_button implements renderable {
/**
* @var moodle_url Target url
*/
public $url;
/**
* @var string Button label
*/
public $label;
/**
* @var string Form submit method post or get
*/
public $method = 'post';
/**
* @var string Wrapping div class
*/
public $class = 'singlebutton';
/**
* @var bool True if button is primary button. Used for styling.
*/
public $primary = false;
/**
* @var bool True if button disabled, false if normal
*/
public $disabled = false;
/**
* @var string Button tooltip
*/
public $tooltip = null;
/**
* @var string Form id
*/
public $formid;
/**
* @var array List of attached actions
*/
public $actions = array();
/**
* @var array $params URL Params
*/
public $params;
/**
* @var string Action id
*/
public $actionid;
/**
* @var array
*/
protected $attributes = [];
/**
* Constructor
* @param moodle_url $url
* @param string $label button text
* @param string $method get or post submit method
* @param array $attributes Attributes for the HTML button tag
*/
public function __construct(moodle_url $url, $label, $method='post', $primary=false, $attributes = []) {
$this->url = clone($url);
$this->label = $label;
$this->method = $method;
$this->primary = $primary;
$this->attributes = $attributes;
}
/**
* Shortcut for adding a JS confirm dialog when the button is clicked.
* The message must be a yes/no question.
*
* @param string $confirmmessage The yes/no confirmation question. If "Yes" is clicked, the original action will occur.
*/
public function add_confirm_action($confirmmessage) {
$this->add_action(new confirm_action($confirmmessage));
}
/**
* Add action to the button.
* @param component_action $action
*/
public function add_action(component_action $action) {
$this->actions[] = $action;
}
/**
* Sets an attribute for the HTML button tag.
*
* @param string $name The attribute name
* @param mixed $value The value
* @return null
*/
public function set_attribute($name, $value) {
$this->attributes[$name] = $value;
}
/**
* Export data.
*
* @param renderer_base $output Renderer.
* @return stdClass
*/
public function export_for_template(renderer_base $output) {
$url = $this->method === 'get' ? $this->url->out_omit_querystring(true) : $this->url->out_omit_querystring();
$data = new stdClass();
$data->id = html_writer::random_id('single_button');
$data->formid = $this->formid;
$data->method = $this->method;
$data->url = $url === '' ? '#' : $url;
$data->label = $this->label;
$data->classes = $this->class;
$data->disabled = $this->disabled;
$data->tooltip = $this->tooltip;
$data->primary = $this->primary;
$data->attributes = [];
foreach ($this->attributes as $key => $value) {
$data->attributes[] = ['name' => $key, 'value' => $value];
}
// Form parameters.
$params = $this->url->params();
if ($this->method === 'post') {
$params['sesskey'] = sesskey();
}
$data->params = array_map(function($key) use ($params) {
return ['name' => $key, 'value' => $params[$key]];
}, array_keys($params));
// Button actions.
$actions = $this->actions;
$data->actions = array_map(function($action) use ($output) {
return $action->export_for_template($output);
}, $actions);
$data->hasactions = !empty($data->actions);
return $data;
}
}
/**
* Simple form with just one select field that gets submitted automatically.
*
* If JS not enabled small go button is printed too.
*
* @copyright 2009 Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class single_select implements renderable, templatable {
/**
* @var moodle_url Target url - includes hidden fields
*/
var $url;
/**
* @var string Name of the select element.
*/
var $name;
/**
* @var array $options associative array value=>label ex.: array(1=>'One, 2=>Two)
* it is also possible to specify optgroup as complex label array ex.:
* array(array('Odd'=>array(1=>'One', 3=>'Three)), array('Even'=>array(2=>'Two')))
* array(1=>'One', '--1uniquekey'=>array('More'=>array(2=>'Two', 3=>'Three')))
*/
var $options;
/**
* @var string Selected option
*/
var $selected;
/**
* @var array Nothing selected
*/
var $nothing;
/**
* @var array Extra select field attributes
*/
var $attributes = array();
/**
* @var string Button label
*/
var $label = '';
/**
* @var array Button label's attributes
*/
var $labelattributes = array();
/**
* @var string Form submit method post or get
*/
var $method = 'get';
/**
* @var string Wrapping div class
*/
var $class = 'singleselect';
/**
* @var bool True if button disabled, false if normal
*/
var $disabled = false;
/**
* @var string Button tooltip
*/
var $tooltip = null;
/**
* @var string Form id
*/
var $formid = null;
/**
* @var help_icon The help icon for this element.
*/
var $helpicon = null;
/**
* Constructor
* @param moodle_url $url form action target, includes hidden fields
* @param string $name name of selection field - the changing parameter in url
* @param array $options list of options
* @param string $selected selected element
* @param array $nothing
* @param string $formid
*/
public function __construct(moodle_url $url, $name, array $options, $selected = '', $nothing = array('' => 'choosedots'), $formid = null) {
$this->url = $url;
$this->name = $name;
$this->options = $options;
$this->selected = $selected;
$this->nothing = $nothing;
$this->formid = $formid;
}
/**
* Shortcut for adding a JS confirm dialog when the button is clicked.
* The message must be a yes/no question.
*
* @param string $confirmmessage The yes/no confirmation question. If "Yes" is clicked, the original action will occur.
*/
public function add_confirm_action($confirmmessage) {
$this->add_action(new component_action('submit', 'M.util.show_confirm_dialog', array('message' => $confirmmessage)));
}
/**
* Add action to the button.
*
* @param component_action $action
*/
public function add_action(component_action $action) {
$this->actions[] = $action;
}
/**
* Adds help icon.
*
* @deprecated since Moodle 2.0
*/
public function set_old_help_icon($helppage, $title, $component = 'moodle') {
throw new coding_exception('set_old_help_icon() can not be used any more, please see set_help_icon().');
}
/**
* Adds help icon.
*
* @param string $identifier The keyword that defines a help page
* @param string $component
*/
public function set_help_icon($identifier, $component = 'moodle') {
$this->helpicon = new help_icon($identifier, $component);
}
/**
* Sets select's label
*
* @param string $label
* @param array $attributes (optional)
*/
public function set_label($label, $attributes = array()) {
$this->label = $label;
$this->labelattributes = $attributes;
}
/**
* Export data.
*
* @param renderer_base $output Renderer.
* @return stdClass
*/
public function export_for_template(renderer_base $output) {
$attributes = $this->attributes;
$data = new stdClass();
$data->name = $this->name;
$data->method = $this->method;
$data->action = $this->method === 'get' ? $this->url->out_omit_querystring(true) : $this->url->out_omit_querystring();
$data->classes = $this->class;
$data->label = $this->label;
$data->disabled = $this->disabled;
$data->title = $this->tooltip;
$data->formid = !empty($this->formid) ? $this->formid : html_writer::random_id('single_select_f');
$data->id = !empty($attributes['id']) ? $attributes['id'] : html_writer::random_id('single_select');
// Select element attributes.
// Unset attributes that are already predefined in the template.
unset($attributes['id']);
unset($attributes['class']);
unset($attributes['name']);
unset($attributes['title']);
unset($attributes['disabled']);
// Map the attributes.
$data->attributes = array_map(function($key) use ($attributes) {
return ['name' => $key, 'value' => $attributes[$key]];
}, array_keys($attributes));
// Form parameters.
$params = $this->url->params();
if ($this->method === 'post') {
$params['sesskey'] = sesskey();
}
$data->params = array_map(function($key) use ($params) {
return ['name' => $key, 'value' => $params[$key]];
}, array_keys($params));
// Select options.
$hasnothing = false;
if (is_string($this->nothing) && $this->nothing !== '') {
$nothing = ['' => $this->nothing];
$hasnothing = true;
$nothingkey = '';
} else if (is_array($this->nothing)) {
$nothingvalue = reset($this->nothing);
if ($nothingvalue === 'choose' || $nothingvalue === 'choosedots') {
$nothing = [key($this->nothing) => get_string('choosedots')];
} else {
$nothing = $this->nothing;
}
$hasnothing = true;
$nothingkey = key($this->nothing);
}
if ($hasnothing) {
$options = $nothing + $this->options;
} else {
$options = $this->options;
}
foreach ($options as $value => $name) {
if (is_array($options[$value])) {
foreach ($options[$value] as $optgroupname => $optgroupvalues) {
$sublist = [];
foreach ($optgroupvalues as $optvalue => $optname) {
$option = [
'value' => $optvalue,
'name' => $optname,
'selected' => strval($this->selected) === strval($optvalue),
];
if ($hasnothing && $nothingkey === $optvalue) {
$option['ignore'] = 'data-ignore';
}
$sublist[] = $option;
}
$data->options[] = [
'name' => $optgroupname,
'optgroup' => true,
'options' => $sublist
];
}
} else {
$option = [
'value' => $value,
'name' => $options[$value],
'selected' => strval($this->selected) === strval($value),
'optgroup' => false
];
if ($hasnothing && $nothingkey === $value) {
$option['ignore'] = 'data-ignore';
}
$data->options[] = $option;
}
}
// Label attributes.
$data->labelattributes = [];
// Unset label attributes that are already in the template.
unset($this->labelattributes['for']);
// Map the label attributes.
foreach ($this->labelattributes as $key => $value) {
$data->labelattributes[] = ['name' => $key, 'value' => $value];
}
// Help icon.
$data->helpicon = !empty($this->helpicon) ? $this->helpicon->export_for_template($output) : false;
return $data;
}
}
/**
* Simple URL selection widget description.
*
* @copyright 2009 Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class url_select implements renderable, templatable {
/**
* @var array $urls associative array value=>label ex.: array(1=>'One, 2=>Two)
* it is also possible to specify optgroup as complex label array ex.:
* array(array('Odd'=>array(1=>'One', 3=>'Three)), array('Even'=>array(2=>'Two')))
* array(1=>'One', '--1uniquekey'=>array('More'=>array(2=>'Two', 3=>'Three')))
*/
var $urls;
/**
* @var string Selected option
*/
var $selected;
/**
* @var array Nothing selected
*/
var $nothing;
/**
* @var array Extra select field attributes
*/
var $attributes = array();
/**
* @var string Button label
*/
var $label = '';
/**
* @var array Button label's attributes
*/
var $labelattributes = array();
/**
* @var string Wrapping div class
*/
var $class = 'urlselect';
/**
* @var bool True if button disabled, false if normal
*/
var $disabled = false;
/**
* @var string Button tooltip
*/
var $tooltip = null;
/**
* @var string Form id
*/
var $formid = null;
/**
* @var help_icon The help icon for this element.
*/
var $helpicon = null;
/**
* @var string If set, makes button visible with given name for button
*/
var $showbutton = null;
/**
* Constructor
* @param array $urls list of options
* @param string $selected selected element
* @param array $nothing
* @param string $formid
* @param string $showbutton Set to text of button if it should be visible
* or null if it should be hidden (hidden version always has text 'go')
*/
public function __construct(array $urls, $selected = '', $nothing = array('' => 'choosedots'), $formid = null, $showbutton = null) {
$this->urls = $urls;
$this->selected = $selected;
$this->nothing = $nothing;
$this->formid = $formid;
$this->showbutton = $showbutton;
}
/**
* Adds help icon.
*
* @deprecated since Moodle 2.0
*/
public function set_old_help_icon($helppage, $title, $component = 'moodle') {
throw new coding_exception('set_old_help_icon() can not be used any more, please see set_help_icon().');
}
/**
* Adds help icon.
*
* @param string $identifier The keyword that defines a help page
* @param string $component
*/
public function set_help_icon($identifier, $component = 'moodle') {
$this->helpicon = new help_icon($identifier, $component);
}
/**
* Sets select's label
*
* @param string $label
* @param array $attributes (optional)
*/
public function set_label($label, $attributes = array()) {
$this->label = $label;
$this->labelattributes = $attributes;
}
/**
* Clean a URL.
*
* @param string $value The URL.
* @return The cleaned URL.
*/
protected function clean_url($value) {
global $CFG;
if (empty($value)) {
// Nothing.
} else if (strpos($value, $CFG->wwwroot . '/') === 0) {
$value = str_replace($CFG->wwwroot, '', $value);
} else if (strpos($value, '/') !== 0) {
debugging("Invalid url_select urls parameter: url '$value' is not local relative url!", DEBUG_DEVELOPER);
}
return $value;
}
/**
* Flatten the options for Mustache.
*
* This also cleans the URLs.
*
* @param array $options The options.
* @param array $nothing The nothing option.
* @return array
*/
protected function flatten_options($options, $nothing) {
$flattened = [];
foreach ($options as $value => $option) {
if (is_array($option)) {
foreach ($option as $groupname => $optoptions) {
if (!isset($flattened[$groupname])) {
$flattened[$groupname] = [
'name' => $groupname,
'isgroup' => true,
'options' => []
];
}
foreach ($optoptions as $optvalue => $optoption) {
$cleanedvalue = $this->clean_url($optvalue);
$flattened[$groupname]['options'][$cleanedvalue] = [
'name' => $optoption,
'value' => $cleanedvalue,
'selected' => $this->selected == $optvalue,
];
}
}
} else {
$cleanedvalue = $this->clean_url($value);
$flattened[$cleanedvalue] = [
'name' => $option,
'value' => $cleanedvalue,
'selected' => $this->selected == $value,
];
}
}
if (!empty($nothing)) {
$value = key($nothing);
$name = reset($nothing);
$flattened = [
$value => ['name' => $name, 'value' => $value, 'selected' => $this->selected == $value]
] + $flattened;
}
// Make non-associative array.
foreach ($flattened as $key => $value) {
if (!empty($value['options'])) {
$flattened[$key]['options'] = array_values($value['options']);
}
}
$flattened = array_values($flattened);
return $flattened;
}
/**
* Export for template.
*
* @param renderer_base $output Renderer.
* @return stdClass
*/
public function export_for_template(renderer_base $output) {
$attributes = $this->attributes;
$data = new stdClass();
$data->formid = !empty($this->formid) ? $this->formid : html_writer::random_id('url_select_f');
$data->classes = $this->class;
$data->label = $this->label;
$data->disabled = $this->disabled;
$data->title = $this->tooltip;
$data->id = !empty($attributes['id']) ? $attributes['id'] : html_writer::random_id('url_select');
$data->sesskey = sesskey();
$data->action = (new moodle_url('/course/jumpto.php'))->out(false);
// Remove attributes passed as property directly.
unset($attributes['class']);
unset($attributes['id']);
unset($attributes['name']);
unset($attributes['title']);
unset($attributes['disabled']);
$data->showbutton = $this->showbutton;
// Select options.
$nothing = false;
if (is_string($this->nothing) && $this->nothing !== '') {
$nothing = ['' => $this->nothing];
} else if (is_array($this->nothing)) {
$nothingvalue = reset($this->nothing);
if ($nothingvalue === 'choose' || $nothingvalue === 'choosedots') {
$nothing = [key($this->nothing) => get_string('choosedots')];
} else {
$nothing = $this->nothing;
}
}
$data->options = $this->flatten_options($this->urls, $nothing);
// Label attributes.
$data->labelattributes = [];
// Unset label attributes that are already in the template.
unset($this->labelattributes['for']);
// Map the label attributes.
foreach ($this->labelattributes as $key => $value) {
$data->labelattributes[] = ['name' => $key, 'value' => $value];
}
// Help icon.
$data->helpicon = !empty($this->helpicon) ? $this->helpicon->export_for_template($output) : false;
// Finally all the remaining attributes.
$data->attributes = [];
foreach ($attributes as $key => $value) {
$data->attributes[] = ['name' => $key, 'value' => $value];
}
return $data;
}
}
/**
* Data structure describing html link with special action attached.
*
* @copyright 2010 Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class action_link implements renderable {
/**
* @var moodle_url Href url
*/
public $url;
/**
* @var string Link text HTML fragment
*/
public $text;
/**
* @var array HTML attributes
*/
public $attributes;
/**
* @var array List of actions attached to link
*/
public $actions;
/**
* @var pix_icon Optional pix icon to render with the link
*/
public $icon;
/**
* Constructor
* @param moodle_url $url
* @param string $text HTML fragment
* @param component_action $action
* @param array $attributes associative array of html link attributes + disabled
* @param pix_icon $icon optional pix_icon to render with the link text
*/
public function __construct(moodle_url $url,
$text,
component_action $action=null,
array $attributes=null,
pix_icon $icon=null) {
$this->url = clone($url);
$this->text = $text;
$this->attributes = (array)$attributes;
if ($action) {
$this->add_action($action);
}
$this->icon = $icon;
}
/**
* Add action to the link.
*
* @param component_action $action
*/
public function add_action(component_action $action) {
$this->actions[] = $action;
}
/**
* Adds a CSS class to this action link object
* @param string $class
*/
public function add_class($class) {
if (empty($this->attributes['class'])) {
$this->attributes['class'] = $class;
} else {
$this->attributes['class'] .= ' ' . $class;
}
}
/**
* Returns true if the specified class has been added to this link.
* @param string $class
* @return bool
*/
public function has_class($class) {
return strpos(' ' . $this->attributes['class'] . ' ', ' ' . $class . ' ') !== false;
}
/**
* Return the rendered HTML for the icon. Useful for rendering action links in a template.
* @return string
*/
public function get_icon_html() {
global $OUTPUT;
if (!$this->icon) {
return '';
}
return $OUTPUT->render($this->icon);
}
/**
* Export for template.
*
* @param renderer_base $output The renderer.
* @return stdClass
*/
public function export_for_template(renderer_base $output) {
$data = new stdClass();
$attributes = $this->attributes;
if (empty($attributes['id'])) {
$attributes['id'] = html_writer::random_id('action_link');
}
$data->id = $attributes['id'];
unset($attributes['id']);
$data->disabled = !empty($attributes['disabled']);
unset($attributes['disabled']);
$data->text = $this->text instanceof renderable ? $output->render($this->text) : (string) $this->text;
$data->url = $this->url ? $this->url->out(false) : '';
$data->icon = $this->icon ? $this->icon->export_for_pix() : null;
$data->classes = isset($attributes['class']) ? $attributes['class'] : '';
unset($attributes['class']);
$data->attributes = array_map(function($key, $value) {
return [
'name' => $key,
'value' => $value
];
}, array_keys($attributes), $attributes);
$data->actions = array_map(function($action) use ($output) {
return $action->export_for_template($output);
}, !empty($this->actions) ? $this->actions : []);
$data->hasactions = !empty($this->actions);
return $data;
}
}
/**
* Simple html output class
*
* @copyright 2009 Tim Hunt, 2010 Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class html_writer {
/**
* Outputs a tag with attributes and contents
*
* @param string $tagname The name of tag ('a', 'img', 'span' etc.)
* @param string $contents What goes between the opening and closing tags
* @param array $attributes The tag attributes (array('src' => $url, 'class' => 'class1') etc.)
* @return string HTML fragment
*/
public static function tag($tagname, $contents, array $attributes = null) {
return self::start_tag($tagname, $attributes) . $contents . self::end_tag($tagname);
}
/**
* Outputs an opening tag with attributes
*
* @param string $tagname The name of tag ('a', 'img', 'span' etc.)
* @param array $attributes The tag attributes (array('src' => $url, 'class' => 'class1') etc.)
* @return string HTML fragment
*/
public static function start_tag($tagname, array $attributes = null) {
return '<' . $tagname . self::attributes($attributes) . '>';
}
/**
* Outputs a closing tag
*
* @param string $tagname The name of tag ('a', 'img', 'span' etc.)
* @return string HTML fragment
*/
public static function end_tag($tagname) {
return '</' . $tagname . '>';
}
/**
* Outputs an empty tag with attributes
*
* @param string $tagname The name of tag ('input', 'img', 'br' etc.)
* @param array $attributes The tag attributes (array('src' => $url, 'class' => 'class1') etc.)
* @return string HTML fragment
*/
public static function empty_tag($tagname, array $attributes = null) {
return '<' . $tagname . self::attributes($attributes) . ' />';
}
/**
* Outputs a tag, but only if the contents are not empty
*
* @param string $tagname The name of tag ('a', 'img', 'span' etc.)
* @param string $contents What goes between the opening and closing tags
* @param array $attributes The tag attributes (array('src' => $url, 'class' => 'class1') etc.)
* @return string HTML fragment
*/
public static function nonempty_tag($tagname, $contents, array $attributes = null) {
if ($contents === '' || is_null($contents)) {
return '';
}
return self::tag($tagname, $contents, $attributes);
}
/**
* Outputs a HTML attribute and value
*
* @param string $name The name of the attribute ('src', 'href', 'class' etc.)
* @param string $value The value of the attribute. The value will be escaped with {@link s()}
* @return string HTML fragment
*/
public static function attribute($name, $value) {
if ($value instanceof moodle_url) {
return ' ' . $name . '="' . $value->out() . '"';
}
// special case, we do not want these in output
if ($value === null) {
return '';
}
// no sloppy trimming here!
return ' ' . $name . '="' . s($value) . '"';
}
/**
* Outputs a list of HTML attributes and values
*
* @param array $attributes The tag attributes (array('src' => $url, 'class' => 'class1') etc.)
* The values will be escaped with {@link s()}
* @return string HTML fragment
*/
public static function attributes(array $attributes = null) {
$attributes = (array)$attributes;
$output = '';
foreach ($attributes as $name => $value) {
$output .= self::attribute($name, $value);
}
return $output;
}
/**
* Generates a simple image tag with attributes.
*
* @param string $src The source of image
* @param string $alt The alternate text for image
* @param array $attributes The tag attributes (array('height' => $max_height, 'class' => 'class1') etc.)
* @return string HTML fragment
*/
public static function img($src, $alt, array $attributes = null) {
$attributes = (array)$attributes;
$attributes['src'] = $src;
$attributes['alt'] = $alt;
return self::empty_tag('img', $attributes);
}
/**
* Generates random html element id.
*
* @staticvar int $counter
* @staticvar type $uniq
* @param string $base A string fragment that will be included in the random ID.
* @return string A unique ID
*/
public static function random_id($base='random') {
static $counter = 0;
static $uniq;
if (!isset($uniq)) {
$uniq = uniqid();
}
$counter++;
return $base.$uniq.$counter;
}
/**
* Generates a simple html link
*
* @param string|moodle_url $url The URL
* @param string $text The text
* @param array $attributes HTML attributes
* @return string HTML fragment
*/
public static function link($url, $text, array $attributes = null) {
$attributes = (array)$attributes;
$attributes['href'] = $url;
return self::tag('a', $text, $attributes);
}
/**
* Generates a simple checkbox with optional label
*
* @param string $name The name of the checkbox
* @param string $value The value of the checkbox
* @param bool $checked Whether the checkbox is checked
* @param string $label The label for the checkbox
* @param array $attributes Any attributes to apply to the checkbox
* @param array $labelattributes Any attributes to apply to the label, if present
* @return string html fragment
*/
public static function checkbox($name, $value, $checked = true, $label = '',
array $attributes = null, array $labelattributes = null) {
$attributes = (array) $attributes;
$output = '';
if ($label !== '' and !is_null($label)) {
if (empty($attributes['id'])) {
$attributes['id'] = self::random_id('checkbox_');
}
}
$attributes['type'] = 'checkbox';
$attributes['value'] = $value;
$attributes['name'] = $name;
$attributes['checked'] = $checked ? 'checked' : null;
$output .= self::empty_tag('input', $attributes);
if ($label !== '' and !is_null($label)) {
$labelattributes = (array) $labelattributes;
$labelattributes['for'] = $attributes['id'];
$output .= self::tag('label', $label, $labelattributes);
}
return $output;
}
/**
* Generates a simple select yes/no form field
*
* @param string $name name of select element
* @param bool $selected
* @param array $attributes - html select element attributes
* @return string HTML fragment
*/
public static function select_yes_no($name, $selected=true, array $attributes = null) {
$options = array('1'=>get_string('yes'), '0'=>get_string('no'));
return self::select($options, $name, $selected, null, $attributes);
}
/**
* Generates a simple select form field
*
* @param array $options associative array value=>label ex.:
* array(1=>'One, 2=>Two)
* it is also possible to specify optgroup as complex label array ex.:
* array(array('Odd'=>array(1=>'One', 3=>'Three)), array('Even'=>array(2=>'Two')))
* array(1=>'One', '--1uniquekey'=>array('More'=>array(2=>'Two', 3=>'Three')))
* @param string $name name of select element
* @param string|array $selected value or array of values depending on multiple attribute
* @param array|bool $nothing add nothing selected option, or false of not added
* @param array $attributes html select element attributes
* @return string HTML fragment
*/
public static function select(array $options, $name, $selected = '', $nothing = array('' => 'choosedots'), array $attributes = null) {
$attributes = (array)$attributes;
if (is_array($nothing)) {
foreach ($nothing as $k=>$v) {
if ($v === 'choose' or $v === 'choosedots') {
$nothing[$k] = get_string('choosedots');
}
}
$options = $nothing + $options; // keep keys, do not override
} else if (is_string($nothing) and $nothing !== '') {
// BC
$options = array(''=>$nothing) + $options;
}
// we may accept more values if multiple attribute specified
$selected = (array)$selected;
foreach ($selected as $k=>$v) {
$selected[$k] = (string)$v;
}
if (!isset($attributes['id'])) {
$id = 'menu'.$name;
// name may contaion [], which would make an invalid id. e.g. numeric question type editing form, assignment quickgrading
$id = str_replace('[', '', $id);
$id = str_replace(']', '', $id);
$attributes['id'] = $id;
}
if (!isset($attributes['class'])) {
$class = 'menu'.$name;
// name may contaion [], which would make an invalid class. e.g. numeric question type editing form, assignment quickgrading
$class = str_replace('[', '', $class);
$class = str_replace(']', '', $class);
$attributes['class'] = $class;
}
$attributes['class'] = 'select custom-select ' . $attributes['class']; // Add 'select' selector always.
$attributes['name'] = $name;
if (!empty($attributes['disabled'])) {
$attributes['disabled'] = 'disabled';
} else {
unset($attributes['disabled']);
}
$output = '';
foreach ($options as $value=>$label) {
if (is_array($label)) {
// ignore key, it just has to be unique
$output .= self::select_optgroup(key($label), current($label), $selected);
} else {
$output .= self::select_option($label, $value, $selected);
}
}
return self::tag('select', $output, $attributes);
}
/**
* Returns HTML to display a select box option.
*
* @param string $label The label to display as the option.
* @param string|int $value The value the option represents
* @param array $selected An array of selected options
* @return string HTML fragment
*/
private static function select_option($label, $value, array $selected) {
$attributes = array();
$value = (string)$value;
if (in_array($value, $selected, true)) {
$attributes['selected'] = 'selected';
}
$attributes['value'] = $value;
return self::tag('option', $label, $attributes);
}
/**
* Returns HTML to display a select box option group.
*
* @param string $groupname The label to use for the group
* @param array $options The options in the group
* @param array $selected An array of selected values.
* @return string HTML fragment.
*/
private static function select_optgroup($groupname, $options, array $selected) {
if (empty($options)) {
return '';
}
$attributes = array('label'=>$groupname);
$output = '';
foreach ($options as $value=>$label) {
$output .= self::select_option($label, $value, $selected);
}
return self::tag('optgroup', $output, $attributes);
}
/**
* This is a shortcut for making an hour selector menu.
*
* @param string $type The type of selector (years, months, days, hours, minutes)
* @param string $name fieldname
* @param int $currenttime A default timestamp in GMT
* @param int $step minute spacing
* @param array $attributes - html select element attributes
* @return HTML fragment
*/
public static function select_time($type, $name, $currenttime = 0, $step = 5, array $attributes = null) {
global $OUTPUT;
if (!$currenttime) {
$currenttime = time();
}
$calendartype = \core_calendar\type_factory::get_calendar_instance();
$currentdate = $calendartype->timestamp_to_date_array($currenttime);
$userdatetype = $type;
$timeunits = array();
switch ($type) {
case 'years':
$timeunits = $calendartype->get_years();
$userdatetype = 'year';
break;
case 'months':
$timeunits = $calendartype->get_months();
$userdatetype = 'month';
$currentdate['month'] = (int)$currentdate['mon'];
break;
case 'days':
$timeunits = $calendartype->get_days();
$userdatetype = 'mday';
break;
case 'hours':
for ($i=0; $i<=23; $i++) {
$timeunits[$i] = sprintf("%02d",$i);
}
break;
case 'minutes':
if ($step != 1) {
$currentdate['minutes'] = ceil($currentdate['minutes']/$step)*$step;
}
for ($i=0; $i<=59; $i+=$step) {
$timeunits[$i] = sprintf("%02d",$i);
}
break;
default:
throw new coding_exception("Time type $type is not supported by html_writer::select_time().");
}
$attributes = (array) $attributes;
$data = (object) [
'name' => $name,
'id' => !empty($attributes['id']) ? $attributes['id'] : self::random_id('ts_'),
'label' => get_string(substr($type, 0, -1), 'form'),
'options' => array_map(function($value) use ($timeunits, $currentdate, $userdatetype) {
return [
'name' => $timeunits[$value],
'value' => $value,
'selected' => $currentdate[$userdatetype] == $value
];
}, array_keys($timeunits)),
];
unset($attributes['id']);
unset($attributes['name']);
$data->attributes = array_map(function($name) use ($attributes) {
return [
'name' => $name,
'value' => $attributes[$name]
];
}, array_keys($attributes));
return $OUTPUT->render_from_template('core/select_time', $data);
}
/**
* Shortcut for quick making of lists
*
* Note: 'list' is a reserved keyword ;-)
*
* @param array $items
* @param array $attributes
* @param string $tag ul or ol
* @return string
*/
public static function alist(array $items, array $attributes = null, $tag = 'ul') {
$output = html_writer::start_tag($tag, $attributes)."\n";
foreach ($items as $item) {
$output .= html_writer::tag('li', $item)."\n";
}
$output .= html_writer::end_tag($tag);
return $output;
}
/**
* Returns hidden input fields created from url parameters.
*
* @param moodle_url $url
* @param array $exclude list of excluded parameters
* @return string HTML fragment
*/
public static function input_hidden_params(moodle_url $url, array $exclude = null) {
$exclude = (array)$exclude;
$params = $url->params();
foreach ($exclude as $key) {
unset($params[$key]);
}
$output = '';
foreach ($params as $key => $value) {
$attributes = array('type'=>'hidden', 'name'=>$key, 'value'=>$value);
$output .= self::empty_tag('input', $attributes)."\n";
}
return $output;
}
/**
* Generate a script tag containing the the specified code.
*
* @param string $jscode the JavaScript code
* @param moodle_url|string $url optional url of the external script, $code ignored if specified
* @return string HTML, the code wrapped in <script> tags.
*/
public static function script($jscode, $url=null) {
if ($jscode) {
return self::tag('script', "\n//<![CDATA[\n$jscode\n//]]>\n") . "\n";
} else if ($url) {
return self::tag('script', '', ['src' => $url]) . "\n";
} else {
return '';
}
}
/**
* Renders HTML table
*
* This method may modify the passed instance by adding some default properties if they are not set yet.
* If this is not what you want, you should make a full clone of your data before passing them to this
* method. In most cases this is not an issue at all so we do not clone by default for performance
* and memory consumption reasons.
*
* @param html_table $table data to be rendered
* @return string HTML code
*/
public static function table(html_table $table) {
// prepare table data and populate missing properties with reasonable defaults
if (!empty($table->align)) {
foreach ($table->align as $key => $aa) {
if ($aa) {
$table->align[$key] = 'text-align:'. fix_align_rtl($aa) .';'; // Fix for RTL languages
} else {
$table->align[$key] = null;
}
}
}
if (!empty($table->size)) {
foreach ($table->size as $key => $ss) {
if ($ss) {
$table->size[$key] = 'width:'. $ss .';';
} else {
$table->size[$key] = null;
}
}
}
if (!empty($table->wrap)) {
foreach ($table->wrap as $key => $ww) {
if ($ww) {
$table->wrap[$key] = 'white-space:nowrap;';
} else {
$table->wrap[$key] = '';
}
}
}
if (!empty($table->head)) {
foreach ($table->head as $key => $val) {
if (!isset($table->align[$key])) {
$table->align[$key] = null;
}
if (!isset($table->size[$key])) {
$table->size[$key] = null;
}
if (!isset($table->wrap[$key])) {
$table->wrap[$key] = null;
}
}
}
if (empty($table->attributes['class'])) {
$table->attributes['class'] = 'generaltable';
}
if (!empty($table->tablealign)) {
$table->attributes['class'] .= ' boxalign' . $table->tablealign;
}
// explicitly assigned properties override those defined via $table->attributes
$table->attributes['class'] = trim($table->attributes['class']);
$attributes = array_merge($table->attributes, array(
'id' => $table->id,
'width' => $table->width,
'summary' => $table->summary,
'cellpadding' => $table->cellpadding,
'cellspacing' => $table->cellspacing,
));
$output = html_writer::start_tag('table', $attributes) . "\n";
$countcols = 0;
// Output a caption if present.
if (!empty($table->caption)) {
$captionattributes = array();
if ($table->captionhide) {
$captionattributes['class'] = 'accesshide';
}
$output .= html_writer::tag(
'caption',
$table->caption,
$captionattributes
);
}
if (!empty($table->head)) {
$countcols = count($table->head);
$output .= html_writer::start_tag('thead', array()) . "\n";
$output .= html_writer::start_tag('tr', array()) . "\n";
$keys = array_keys($table->head);
$lastkey = end($keys);
foreach ($table->head as $key => $heading) {
// Convert plain string headings into html_table_cell objects
if (!($heading instanceof html_table_cell)) {
$headingtext = $heading;
$heading = new html_table_cell();
$heading->text = $headingtext;
$heading->header = true;
}
if ($heading->header !== false) {
$heading->header = true;
}
$tagtype = 'td';
if ($heading->header && (string)$heading->text != '') {
$tagtype = 'th';
}
$heading->attributes['class'] .= ' header c' . $key;
if (isset($table->headspan[$key]) && $table->headspan[$key] > 1) {
$heading->colspan = $table->headspan[$key];
$countcols += $table->headspan[$key] - 1;
}
if ($key == $lastkey) {
$heading->attributes['class'] .= ' lastcol';
}
if (isset($table->colclasses[$key])) {
$heading->attributes['class'] .= ' ' . $table->colclasses[$key];
}
$heading->attributes['class'] = trim($heading->attributes['class']);
$attributes = array_merge($heading->attributes, [
'style' => $table->align[$key] . $table->size[$key] . $heading->style,
'colspan' => $heading->colspan,
]);
if ($tagtype == 'th') {
$attributes['scope'] = !empty($heading->scope) ? $heading->scope : 'col';
}
$output .= html_writer::tag($tagtype, $heading->text, $attributes) . "\n";
}
$output .= html_writer::end_tag('tr') . "\n";
$output .= html_writer::end_tag('thead') . "\n";
if (empty($table->data)) {
// For valid XHTML strict every table must contain either a valid tr
// or a valid tbody... both of which must contain a valid td
$output .= html_writer::start_tag('tbody', array('class' => 'empty'));
$output .= html_writer::tag('tr', html_writer::tag('td', '', array('colspan'=>count($table->head))));
$output .= html_writer::end_tag('tbody');
}
}
if (!empty($table->data)) {
$keys = array_keys($table->data);
$lastrowkey = end($keys);
$output .= html_writer::start_tag('tbody', array());
foreach ($table->data as $key => $row) {
if (($row === 'hr') && ($countcols)) {
$output .= html_writer::tag('td', html_writer::tag('div', '', array('class' => 'tabledivider')), array('colspan' => $countcols));
} else {
// Convert array rows to html_table_rows and cell strings to html_table_cell objects
if (!($row instanceof html_table_row)) {
$newrow = new html_table_row();
foreach ($row as $cell) {
if (!($cell instanceof html_table_cell)) {
$cell = new html_table_cell($cell);
}
$newrow->cells[] = $cell;
}
$row = $newrow;
}
if (isset($table->rowclasses[$key])) {
$row->attributes['class'] .= ' ' . $table->rowclasses[$key];
}
if ($key == $lastrowkey) {
$row->attributes['class'] .= ' lastrow';
}
// Explicitly assigned properties should override those defined in the attributes.
$row->attributes['class'] = trim($row->attributes['class']);
$trattributes = array_merge($row->attributes, array(
'id' => $row->id,
'style' => $row->style,
));
$output .= html_writer::start_tag('tr', $trattributes) . "\n";
$keys2 = array_keys($row->cells);
$lastkey = end($keys2);
$gotlastkey = false; //flag for sanity checking
foreach ($row->cells as $key => $cell) {
if ($gotlastkey) {
//This should never happen. Why do we have a cell after the last cell?
mtrace("A cell with key ($key) was found after the last key ($lastkey)");
}
if (!($cell instanceof html_table_cell)) {
$mycell = new html_table_cell();
$mycell->text = $cell;
$cell = $mycell;
}
if (($cell->header === true) && empty($cell->scope)) {
$cell->scope = 'row';
}
if (isset($table->colclasses[$key])) {
$cell->attributes['class'] .= ' ' . $table->colclasses[$key];
}
$cell->attributes['class'] .= ' cell c' . $key;
if ($key == $lastkey) {
$cell->attributes['class'] .= ' lastcol';
$gotlastkey = true;
}
$tdstyle = '';
$tdstyle .= isset($table->align[$key]) ? $table->align[$key] : '';
$tdstyle .= isset($table->size[$key]) ? $table->size[$key] : '';
$tdstyle .= isset($table->wrap[$key]) ? $table->wrap[$key] : '';
$cell->attributes['class'] = trim($cell->attributes['class']);
$tdattributes = array_merge($cell->attributes, array(
'style' => $tdstyle . $cell->style,
'colspan' => $cell->colspan,
'rowspan' => $cell->rowspan,
'id' => $cell->id,
'abbr' => $cell->abbr,
'scope' => $cell->scope,
));
$tagtype = 'td';
if ($cell->header === true) {
$tagtype = 'th';
}
$output .= html_writer::tag($tagtype, $cell->text, $tdattributes) . "\n";
}
}
$output .= html_writer::end_tag('tr') . "\n";
}
$output .= html_writer::end_tag('tbody') . "\n";
}
$output .= html_writer::end_tag('table') . "\n";
return $output;
}
/**
* Renders form element label
*
* By default, the label is suffixed with a label separator defined in the
* current language pack (colon by default in the English lang pack).
* Adding the colon can be explicitly disabled if needed. Label separators
* are put outside the label tag itself so they are not read by
* screenreaders (accessibility).
*
* Parameter $for explicitly associates the label with a form control. When
* set, the value of this attribute must be the same as the value of
* the id attribute of the form control in the same document. When null,
* the label being defined is associated with the control inside the label
* element.
*
* @param string $text content of the label tag
* @param string|null $for id of the element this label is associated with, null for no association
* @param bool $colonize add label separator (colon) to the label text, if it is not there yet
* @param array $attributes to be inserted in the tab, for example array('accesskey' => 'a')
* @return string HTML of the label element
*/
public static function label($text, $for, $colonize = true, array $attributes=array()) {
if (!is_null($for)) {
$attributes = array_merge($attributes, array('for' => $for));
}
$text = trim($text);
$label = self::tag('label', $text, $attributes);
// TODO MDL-12192 $colonize disabled for now yet
// if (!empty($text) and $colonize) {
// // the $text may end with the colon already, though it is bad string definition style
// $colon = get_string('labelsep', 'langconfig');
// if (!empty($colon)) {
// $trimmed = trim($colon);
// if ((substr($text, -strlen($trimmed)) == $trimmed) or (substr($text, -1) == ':')) {
// //debugging('The label text should not end with colon or other label separator,
// // please fix the string definition.', DEBUG_DEVELOPER);
// } else {
// $label .= $colon;
// }
// }
// }
return $label;
}
/**
* Combines a class parameter with other attributes. Aids in code reduction
* because the class parameter is very frequently used.
*
* If the class attribute is specified both in the attributes and in the
* class parameter, the two values are combined with a space between.
*
* @param string $class Optional CSS class (or classes as space-separated list)
* @param array $attributes Optional other attributes as array
* @return array Attributes (or null if still none)
*/
private static function add_class($class = '', array $attributes = null) {
if ($class !== '') {
$classattribute = array('class' => $class);
if ($attributes) {
if (array_key_exists('class', $attributes)) {
$attributes['class'] = trim($attributes['class'] . ' ' . $class);
} else {
$attributes = $classattribute + $attributes;
}
} else {
$attributes = $classattribute;
}
}
return $attributes;
}
/**
* Creates a <div> tag. (Shortcut function.)
*
* @param string $content HTML content of tag
* @param string $class Optional CSS class (or classes as space-separated list)
* @param array $attributes Optional other attributes as array
* @return string HTML code for div
*/
public static function div($content, $class = '', array $attributes = null) {
return self::tag('div', $content, self::add_class($class, $attributes));
}
/**
* Starts a <div> tag. (Shortcut function.)
*
* @param string $class Optional CSS class (or classes as space-separated list)
* @param array $attributes Optional other attributes as array
* @return string HTML code for open div tag
*/
public static function start_div($class = '', array $attributes = null) {
return self::start_tag('div', self::add_class($class, $attributes));
}
/**
* Ends a <div> tag. (Shortcut function.)
*
* @return string HTML code for close div tag
*/
public static function end_div() {
return self::end_tag('div');
}
/**
* Creates a <span> tag. (Shortcut function.)
*
* @param string $content HTML content of tag
* @param string $class Optional CSS class (or classes as space-separated list)
* @param array $attributes Optional other attributes as array
* @return string HTML code for span
*/
public static function span($content, $class = '', array $attributes = null) {
return self::tag('span', $content, self::add_class($class, $attributes));
}
/**
* Starts a <span> tag. (Shortcut function.)
*
* @param string $class Optional CSS class (or classes as space-separated list)
* @param array $attributes Optional other attributes as array
* @return string HTML code for open span tag
*/
public static function start_span($class = '', array $attributes = null) {
return self::start_tag('span', self::add_class($class, $attributes));
}
/**
* Ends a <span> tag. (Shortcut function.)
*
* @return string HTML code for close span tag
*/
public static function end_span() {
return self::end_tag('span');
}
}
/**
* Simple javascript output class
*
* @copyright 2010 Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class js_writer {
/**
* Returns javascript code calling the function
*
* @param string $function function name, can be complex like Y.Event.purgeElement
* @param array $arguments parameters
* @param int $delay execution delay in seconds
* @return string JS code fragment
*/
public static function function_call($function, array $arguments = null, $delay=0) {
if ($arguments) {
$arguments = array_map('json_encode', convert_to_array($arguments));
$arguments = implode(', ', $arguments);
} else {
$arguments = '';
}
$js = "$function($arguments);";
if ($delay) {
$delay = $delay * 1000; // in miliseconds
$js = "setTimeout(function() { $js }, $delay);";
}
return $js . "\n";
}
/**
* Special function which adds Y as first argument of function call.
*
* @param string $function The function to call
* @param array $extraarguments Any arguments to pass to it
* @return string Some JS code
*/
public static function function_call_with_Y($function, array $extraarguments = null) {
if ($extraarguments) {
$extraarguments = array_map('json_encode', convert_to_array($extraarguments));
$arguments = 'Y, ' . implode(', ', $extraarguments);
} else {
$arguments = 'Y';
}
return "$function($arguments);\n";
}
/**
* Returns JavaScript code to initialise a new object
*
* @param string $var If it is null then no var is assigned the new object.
* @param string $class The class to initialise an object for.
* @param array $arguments An array of args to pass to the init method.
* @param array $requirements Any modules required for this class.
* @param int $delay The delay before initialisation. 0 = no delay.
* @return string Some JS code
*/
public static function object_init($var, $class, array $arguments = null, array $requirements = null, $delay=0) {
if (is_array($arguments)) {
$arguments = array_map('json_encode', convert_to_array($arguments));
$arguments = implode(', ', $arguments);
}
if ($var === null) {
$js = "new $class(Y, $arguments);";
} else if (strpos($var, '.')!==false) {
$js = "$var = new $class(Y, $arguments);";
} else {
$js = "var $var = new $class(Y, $arguments);";
}
if ($delay) {
$delay = $delay * 1000; // in miliseconds
$js = "setTimeout(function() { $js }, $delay);";
}
if (count($requirements) > 0) {
$requirements = implode("', '", $requirements);
$js = "Y.use('$requirements', function(Y){ $js });";
}
return $js."\n";
}
/**
* Returns code setting value to variable
*
* @param string $name
* @param mixed $value json serialised value
* @param bool $usevar add var definition, ignored for nested properties
* @return string JS code fragment
*/
public static function set_variable($name, $value, $usevar = true) {
$output = '';
if ($usevar) {
if (strpos($name, '.')) {
$output .= '';
} else {
$output .= 'var ';
}
}
$output .= "$name = ".json_encode($value).";";
return $output;
}
/**
* Writes event handler attaching code
*
* @param array|string $selector standard YUI selector for elements, may be
* array or string, element id is in the form "#idvalue"
* @param string $event A valid DOM event (click, mousedown, change etc.)
* @param string $function The name of the function to call
* @param array $arguments An optional array of argument parameters to pass to the function
* @return string JS code fragment
*/
public static function event_handler($selector, $event, $function, array $arguments = null) {
$selector = json_encode($selector);
$output = "Y.on('$event', $function, $selector, null";
if (!empty($arguments)) {
$output .= ', ' . json_encode($arguments);
}
return $output . ");\n";
}
}
/**
* Holds all the information required to render a <table> by {@link core_renderer::table()}
*
* Example of usage:
* $t = new html_table();
* ... // set various properties of the object $t as described below
* echo html_writer::table($t);
*
* @copyright 2009 David Mudrak <david.mudrak@gmail.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class html_table {
/**
* @var string Value to use for the id attribute of the table
*/
public $id = null;
/**
* @var array Attributes of HTML attributes for the <table> element
*/
public $attributes = array();
/**
* @var array An array of headings. The n-th array item is used as a heading of the n-th column.
* For more control over the rendering of the headers, an array of html_table_cell objects
* can be passed instead of an array of strings.
*
* Example of usage:
* $t->head = array('Student', 'Grade');
*/
public $head;
/**
* @var array An array that can be used to make a heading span multiple columns.
* In this example, {@link html_table:$data} is supposed to have three columns. For the first two columns,
* the same heading is used. Therefore, {@link html_table::$head} should consist of two items.
*
* Example of usage:
* $t->headspan = array(2,1);
*/
public $headspan;
/**
* @var array An array of column alignments.
* The value is used as CSS 'text-align' property. Therefore, possible
* values are 'left', 'right', 'center' and 'justify'. Specify 'right' or 'left' from the perspective
* of a left-to-right (LTR) language. For RTL, the values are flipped automatically.
*
* Examples of usage:
* $t->align = array(null, 'right');
* or
* $t->align[1] = 'right';
*/
public $align;
/**
* @var array The value is used as CSS 'size' property.
*
* Examples of usage:
* $t->size = array('50%', '50%');
* or
* $t->size[1] = '120px';
*/
public $size;
/**
* @var array An array of wrapping information.
* The only possible value is 'nowrap' that sets the
* CSS property 'white-space' to the value 'nowrap' in the given column.
*
* Example of usage:
* $t->wrap = array(null, 'nowrap');
*/
public $wrap;
/**
* @var array Array of arrays or html_table_row objects containing the data. Alternatively, if you have
* $head specified, the string 'hr' (for horizontal ruler) can be used
* instead of an array of cells data resulting in a divider rendered.
*
* Example of usage with array of arrays:
* $row1 = array('Harry Potter', '76 %');
* $row2 = array('Hermione Granger', '100 %');
* $t->data = array($row1, $row2);
*
* Example with array of html_table_row objects: (used for more fine-grained control)
* $cell1 = new html_table_cell();
* $cell1->text = 'Harry Potter';
* $cell1->colspan = 2;
* $row1 = new html_table_row();
* $row1->cells[] = $cell1;
* $cell2 = new html_table_cell();
* $cell2->text = 'Hermione Granger';
* $cell3 = new html_table_cell();
* $cell3->text = '100 %';
* $row2 = new html_table_row();
* $row2->cells = array($cell2, $cell3);
* $t->data = array($row1, $row2);
*/
public $data = [];
/**
* @deprecated since Moodle 2.0. Styling should be in the CSS.
* @var string Width of the table, percentage of the page preferred.
*/
public $width = null;
/**
* @deprecated since Moodle 2.0. Styling should be in the CSS.
* @var string Alignment for the whole table. Can be 'right', 'left' or 'center' (default).
*/
public $tablealign = null;
/**
* @deprecated since Moodle 2.0. Styling should be in the CSS.
* @var int Padding on each cell, in pixels
*/
public $cellpadding = null;
/**
* @var int Spacing between cells, in pixels
* @deprecated since Moodle 2.0. Styling should be in the CSS.
*/
public $cellspacing = null;
/**
* @var array Array of classes to add to particular rows, space-separated string.
* Class 'lastrow' is added automatically for the last row in the table.
*
* Example of usage:
* $t->rowclasses[9] = 'tenth'
*/
public $rowclasses;
/**
* @var array An array of classes to add to every cell in a particular column,
* space-separated string. Class 'cell' is added automatically by the renderer.
* Classes 'c0' or 'c1' are added automatically for every odd or even column,
* respectively. Class 'lastcol' is added automatically for all last cells
* in a row.
*
* Example of usage:
* $t->colclasses = array(null, 'grade');
*/
public $colclasses;
/**
* @var string Description of the contents for screen readers.
*
* The "summary" attribute on the "table" element is not supported in HTML5.
* Consider describing the structure of the table in a "caption" element or in a "figure" element containing the table;
* or, simplify the structure of the table so that no description is needed.
*
* @deprecated since Moodle 3.9.
*/
public $summary;
/**
* @var string Caption for the table, typically a title.
*
* Example of usage:
* $t->caption = "TV Guide";
*/
public $caption;
/**
* @var bool Whether to hide the table's caption from sighted users.
*
* Example of usage:
* $t->caption = "TV Guide";
* $t->captionhide = true;
*/
public $captionhide = false;
/**
* Constructor
*/
public function __construct() {
$this->attributes['class'] = '';
}
}
/**
* Component representing a table row.
*
* @copyright 2009 Nicolas Connault
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class html_table_row {
/**
* @var string Value to use for the id attribute of the row.
*/
public $id = null;
/**
* @var array Array of html_table_cell objects
*/
public $cells = array();
/**
* @var string Value to use for the style attribute of the table row
*/
public $style = null;
/**
* @var array Attributes of additional HTML attributes for the <tr> element
*/
public $attributes = array();
/**
* Constructor
* @param array $cells
*/
public function __construct(array $cells=null) {
$this->attributes['class'] = '';
$cells = (array)$cells;
foreach ($cells as $cell) {
if ($cell instanceof html_table_cell) {
$this->cells[] = $cell;
} else {
$this->cells[] = new html_table_cell($cell);
}
}
}
}
/**
* Component representing a table cell.
*
* @copyright 2009 Nicolas Connault
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class html_table_cell {
/**
* @var string Value to use for the id attribute of the cell.
*/
public $id = null;
/**
* @var string The contents of the cell.
*/
public $text;
/**
* @var string Abbreviated version of the contents of the cell.
*/
public $abbr = null;
/**
* @var int Number of columns this cell should span.
*/
public $colspan = null;
/**
* @var int Number of rows this cell should span.
*/
public $rowspan = null;
/**
* @var string Defines a way to associate header cells and data cells in a table.
*/
public $scope = null;
/**
* @var bool Whether or not this cell is a header cell.
*/
public $header = null;
/**
* @var string Value to use for the style attribute of the table cell
*/
public $style = null;
/**
* @var array Attributes of additional HTML attributes for the <td> element
*/
public $attributes = array();
/**
* Constructs a table cell
*
* @param string $text
*/
public function __construct($text = null) {
$this->text = $text;
$this->attributes['class'] = '';
}
}
/**
* Component representing a paging bar.
*
* @copyright 2009 Nicolas Connault
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class paging_bar implements renderable, templatable {
/**
* @var int The maximum number of pagelinks to display.
*/
public $maxdisplay = 18;
/**
* @var int The total number of entries to be pages through..
*/
public $totalcount;
/**
* @var int The page you are currently viewing.
*/
public $page;
/**
* @var int The number of entries that should be shown per page.
*/
public $perpage;
/**
* @var string|moodle_url If this is a string then it is the url which will be appended with $pagevar,
* an equals sign and the page number.
* If this is a moodle_url object then the pagevar param will be replaced by
* the page no, for each page.
*/
public $baseurl;
/**
* @var string This is the variable name that you use for the pagenumber in your
* code (ie. 'tablepage', 'blogpage', etc)
*/
public $pagevar;
/**
* @var string A HTML link representing the "previous" page.
*/
public $previouslink = null;
/**
* @var string A HTML link representing the "next" page.
*/
public $nextlink = null;
/**
* @var string A HTML link representing the first page.
*/
public $firstlink = null;
/**
* @var string A HTML link representing the last page.
*/
public $lastlink = null;
/**
* @var array An array of strings. One of them is just a string: the current page
*/
public $pagelinks = array();
/**
* Constructor paging_bar with only the required params.
*
* @param int $totalcount The total number of entries available to be paged through
* @param int $page The page you are currently viewing
* @param int $perpage The number of entries that should be shown per page
* @param string|moodle_url $baseurl url of the current page, the $pagevar parameter is added
* @param string $pagevar name of page parameter that holds the page number
*/
public function __construct($totalcount, $page, $perpage, $baseurl, $pagevar = 'page') {
$this->totalcount = $totalcount;
$this->page = $page;
$this->perpage = $perpage;
$this->baseurl = $baseurl;
$this->pagevar = $pagevar;
}
/**
* Prepares the paging bar for output.
*
* This method validates the arguments set up for the paging bar and then
* produces fragments of HTML to assist display later on.
*
* @param renderer_base $output
* @param moodle_page $page
* @param string $target
* @throws coding_exception
*/
public function prepare(renderer_base $output, moodle_page $page, $target) {
if (!isset($this->totalcount) || is_null($this->totalcount)) {
throw new coding_exception('paging_bar requires a totalcount value.');
}
if (!isset($this->page) || is_null($this->page)) {
throw new coding_exception('paging_bar requires a page value.');
}
if (empty($this->perpage)) {
throw new coding_exception('paging_bar requires a perpage value.');
}
if (empty($this->baseurl)) {
throw new coding_exception('paging_bar requires a baseurl value.');
}
if ($this->totalcount > $this->perpage) {
$pagenum = $this->page - 1;
if ($this->page > 0) {
$this->previouslink = html_writer::link(new moodle_url($this->baseurl, array($this->pagevar=>$pagenum)), get_string('previous'), array('class'=>'previous'));
}
if ($this->perpage > 0) {
$lastpage = ceil($this->totalcount / $this->perpage);
} else {
$lastpage = 1;
}
if ($this->page > round(($this->maxdisplay/3)*2)) {
$currpage = $this->page - round($this->maxdisplay/3);
$this->firstlink = html_writer::link(new moodle_url($this->baseurl, array($this->pagevar=>0)), '1', array('class'=>'first'));
} else {
$currpage = 0;
}
$displaycount = $displaypage = 0;
while ($displaycount < $this->maxdisplay and $currpage < $lastpage) {
$displaypage = $currpage + 1;
if ($this->page == $currpage) {
$this->pagelinks[] = html_writer::span($displaypage, 'current-page');
} else {
$pagelink = html_writer::link(new moodle_url($this->baseurl, array($this->pagevar=>$currpage)), $displaypage);
$this->pagelinks[] = $pagelink;
}
$displaycount++;
$currpage++;
}
if ($currpage < $lastpage) {
$lastpageactual = $lastpage - 1;
$this->lastlink = html_writer::link(new moodle_url($this->baseurl, array($this->pagevar=>$lastpageactual)), $lastpage, array('class'=>'last'));
}
$pagenum = $this->page + 1;
if ($pagenum != $lastpage) {
$this->nextlink = html_writer::link(new moodle_url($this->baseurl, array($this->pagevar=>$pagenum)), get_string('next'), array('class'=>'next'));
}
}
}
/**
* Export for template.
*
* @param renderer_base $output The renderer.
* @return stdClass
*/
public function export_for_template(renderer_base $output) {
$data = new stdClass();
$data->previous = null;
$data->next = null;
$data->first = null;
$data->last = null;
$data->label = get_string('page');
$data->pages = [];
$data->haspages = $this->totalcount > $this->perpage;
$data->pagesize = $this->perpage;
if (!$data->haspages) {
return $data;
}
if ($this->page > 0) {
$data->previous = [
'page' => $this->page,
'url' => (new moodle_url($this->baseurl, [$this->pagevar => $this->page - 1]))->out(false)
];
}
$currpage = 0;
if ($this->page > round(($this->maxdisplay / 3) * 2)) {
$currpage = $this->page - round($this->maxdisplay / 3);
$data->first = [
'page' => 1,
'url' => (new moodle_url($this->baseurl, [$this->pagevar => 0]))->out(false)
];
}
$lastpage = 1;
if ($this->perpage > 0) {
$lastpage = ceil($this->totalcount / $this->perpage);
}
$displaycount = 0;
$displaypage = 0;
while ($displaycount < $this->maxdisplay and $currpage < $lastpage) {
$displaypage = $currpage + 1;
$iscurrent = $this->page == $currpage;
$link = new moodle_url($this->baseurl, [$this->pagevar => $currpage]);
$data->pages[] = [
'page' => $displaypage,
'active' => $iscurrent,
'url' => $iscurrent ? null : $link->out(false)
];
$displaycount++;
$currpage++;
}
if ($currpage < $lastpage) {
$data->last = [
'page' => $lastpage,
'url' => (new moodle_url($this->baseurl, [$this->pagevar => $lastpage - 1]))->out(false)
];
}
if ($this->page + 1 != $lastpage) {
$data->next = [
'page' => $this->page + 2,
'url' => (new moodle_url($this->baseurl, [$this->pagevar => $this->page + 1]))->out(false)
];
}
return $data;
}
}
/**
* Component representing initials bar.
*
* @copyright 2017 Ilya Tregubov
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 3.3
* @package core
* @category output
*/
class initials_bar implements renderable, templatable {
/**
* @var string Currently selected letter.
*/
public $current;
/**
* @var string Class name to add to this initial bar.
*/
public $class;
/**
* @var string The name to put in front of this initial bar.
*/
public $title;
/**
* @var string URL parameter name for this initial.
*/
public $urlvar;
/**
* @var string URL object.
*/
public $url;
/**
* @var array An array of letters in the alphabet.
*/
public $alpha;
/**
* Constructor initials_bar with only the required params.
*
* @param string $current the currently selected letter.
* @param string $class class name to add to this initial bar.
* @param string $title the name to put in front of this initial bar.
* @param string $urlvar URL parameter name for this initial.
* @param string $url URL object.
* @param array $alpha of letters in the alphabet.
*/
public function __construct($current, $class, $title, $urlvar, $url, $alpha = null) {
$this->current = $current;
$this->class = $class;
$this->title = $title;
$this->urlvar = $urlvar;
$this->url = $url;
$this->alpha = $alpha;
}
/**
* Export for template.
*
* @param renderer_base $output The renderer.
* @return stdClass
*/
public function export_for_template(renderer_base $output) {
$data = new stdClass();
if ($this->alpha == null) {
$this->alpha = explode(',', get_string('alphabet', 'langconfig'));
}
if ($this->current == 'all') {
$this->current = '';
}
// We want to find a letter grouping size which suits the language so
// find the largest group size which is less than 15 chars.
// The choice of 15 chars is the largest number of chars that reasonably
// fits on the smallest supported screen size. By always using a max number
// of groups which is a factor of 2, we always get nice wrapping, and the
// last row is always the shortest.
$groupsize = count($this->alpha);
$groups = 1;
while ($groupsize > 15) {
$groups *= 2;
$groupsize = ceil(count($this->alpha) / $groups);
}
$groupsizelimit = 0;
$groupnumber = 0;
foreach ($this->alpha as $letter) {
if ($groupsizelimit++ > 0 && $groupsizelimit % $groupsize == 1) {
$groupnumber++;
}
$groupletter = new stdClass();
$groupletter->name = $letter;
$groupletter->url = $this->url->out(false, array($this->urlvar => $letter));
if ($letter == $this->current) {
$groupletter->selected = $this->current;
}
if (!isset($data->group[$groupnumber])) {
$data->group[$groupnumber] = new stdClass();
}
$data->group[$groupnumber]->letter[] = $groupletter;
}
$data->class = $this->class;
$data->title = $this->title;
$data->url = $this->url->out(false, array($this->urlvar => ''));
$data->current = $this->current;
$data->all = get_string('all');
return $data;
}
}
/**
* This class represents how a block appears on a page.
*
* During output, each block instance is asked to return a block_contents object,
* those are then passed to the $OUTPUT->block function for display.
*
* contents should probably be generated using a moodle_block_..._renderer.
*
* Other block-like things that need to appear on the page, for example the
* add new block UI, are also represented as block_contents objects.
*
* @copyright 2009 Tim Hunt
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class block_contents {
/** Used when the block cannot be collapsed **/
const NOT_HIDEABLE = 0;
/** Used when the block can be collapsed but currently is not **/
const VISIBLE = 1;
/** Used when the block has been collapsed **/
const HIDDEN = 2;
/**
* @var int Used to set $skipid.
*/
protected static $idcounter = 1;
/**
* @var int All the blocks (or things that look like blocks) printed on
* a page are given a unique number that can be used to construct id="" attributes.
* This is set automatically be the {@link prepare()} method.
* Do not try to set it manually.
*/
public $skipid;
/**
* @var int If this is the contents of a real block, this should be set
* to the block_instance.id. Otherwise this should be set to 0.
*/
public $blockinstanceid = 0;
/**
* @var int If this is a real block instance, and there is a corresponding
* block_position.id for the block on this page, this should be set to that id.
* Otherwise it should be 0.
*/
public $blockpositionid = 0;
/**
* @var array An array of attribute => value pairs that are put on the outer div of this
* block. {@link $id} and {@link $classes} attributes should be set separately.
*/
public $attributes;
/**
* @var string The title of this block. If this came from user input, it should already
* have had format_string() processing done on it. This will be output inside
* <h2> tags. Please do not cause invalid XHTML.
*/
public $title = '';
/**
* @var string The label to use when the block does not, or will not have a visible title.
* You should never set this as well as title... it will just be ignored.
*/
public $arialabel = '';
/**
* @var string HTML for the content
*/
public $content = '';
/**
* @var array An alternative to $content, it you want a list of things with optional icons.
*/
public $footer = '';
/**
* @var string Any small print that should appear under the block to explain
* to the teacher about the block, for example 'This is a sticky block that was
* added in the system context.'
*/
public $annotation = '';
/**
* @var int One of the constants NOT_HIDEABLE, VISIBLE, HIDDEN. Whether
* the user can toggle whether this block is visible.
*/
public $collapsible = self::NOT_HIDEABLE;
/**
* Set this to true if the block is dockable.
* @var bool
*/
public $dockable = false;
/**
* @var array A (possibly empty) array of editing controls. Each element of
* this array should be an array('url' => $url, 'icon' => $icon, 'caption' => $caption).
* $icon is the icon name. Fed to $OUTPUT->image_url.
*/
public $controls = array();
/**
* Create new instance of block content
* @param array $attributes
*/
public function __construct(array $attributes = null) {
$this->skipid = self::$idcounter;
self::$idcounter += 1;
if ($attributes) {
// standard block
$this->attributes = $attributes;
} else {
// simple "fake" blocks used in some modules and "Add new block" block
$this->attributes = array('class'=>'block');
}
}
/**
* Add html class to block
*
* @param string $class
*/
public function add_class($class) {
$this->attributes['class'] .= ' '.$class;
}
}
/**
* This class represents a target for where a block can go when it is being moved.
*
* This needs to be rendered as a form with the given hidden from fields, and
* clicking anywhere in the form should submit it. The form action should be
* $PAGE->url.
*
* @copyright 2009 Tim Hunt
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class block_move_target {
/**
* @var moodle_url Move url
*/
public $url;
/**
* Constructor
* @param moodle_url $url
*/
public function __construct(moodle_url $url) {
$this->url = $url;
}
}
/**
* Custom menu item
*
* This class is used to represent one item within a custom menu that may or may
* not have children.
*
* @copyright 2010 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class custom_menu_item implements renderable, templatable {
/**
* @var string The text to show for the item
*/
protected $text;
/**
* @var moodle_url The link to give the icon if it has no children
*/
protected $url;
/**
* @var string A title to apply to the item. By default the text
*/
protected $title;
/**
* @var int A sort order for the item, not necessary if you order things in
* the CFG var.
*/
protected $sort;
/**
* @var custom_menu_item A reference to the parent for this item or NULL if
* it is a top level item
*/
protected $parent;
/**
* @var array A array in which to store children this item has.
*/
protected $children = array();
/**
* @var int A reference to the sort var of the last child that was added
*/
protected $lastsort = 0;
/**
* Constructs the new custom menu item
*
* @param string $text
* @param moodle_url $url A moodle url to apply as the link for this item [Optional]
* @param string $title A title to apply to this item [Optional]
* @param int $sort A sort or to use if we need to sort differently [Optional]
* @param custom_menu_item $parent A reference to the parent custom_menu_item this child
* belongs to, only if the child has a parent. [Optional]
*/
public function __construct($text, moodle_url $url=null, $title=null, $sort = null, custom_menu_item $parent = null) {
$this->text = $text;
$this->url = $url;
$this->title = $title;
$this->sort = (int)$sort;
$this->parent = $parent;
}
/**
* Adds a custom menu item as a child of this node given its properties.
*
* @param string $text
* @param moodle_url $url
* @param string $title
* @param int $sort
* @return custom_menu_item
*/
public function add($text, moodle_url $url = null, $title = null, $sort = null) {
$key = count($this->children);
if (empty($sort)) {
$sort = $this->lastsort + 1;
}
$this->children[$key] = new custom_menu_item($text, $url, $title, $sort, $this);
$this->lastsort = (int)$sort;
return $this->children[$key];
}
/**
* Removes a custom menu item that is a child or descendant to the current menu.
*
* Returns true if child was found and removed.
*
* @param custom_menu_item $menuitem
* @return bool
*/
public function remove_child(custom_menu_item $menuitem) {
$removed = false;
if (($key = array_search($menuitem, $this->children)) !== false) {
unset($this->children[$key]);
$this->children = array_values($this->children);
$removed = true;
} else {
foreach ($this->children as $child) {
if ($removed = $child->remove_child($menuitem)) {
break;
}
}
}
return $removed;
}
/**
* Returns the text for this item
* @return string
*/
public function get_text() {
return $this->text;
}
/**
* Returns the url for this item
* @return moodle_url
*/
public function get_url() {
return $this->url;
}
/**
* Returns the title for this item
* @return string
*/
public function get_title() {
return $this->title;
}
/**
* Sorts and returns the children for this item
* @return array
*/
public function get_children() {
$this->sort();
return $this->children;
}
/**
* Gets the sort order for this child
* @return int
*/
public function get_sort_order() {
return $this->sort;
}
/**
* Gets the parent this child belong to
* @return custom_menu_item
*/
public function get_parent() {
return $this->parent;
}
/**
* Sorts the children this item has
*/
public function sort() {
usort($this->children, array('custom_menu','sort_custom_menu_items'));
}
/**
* Returns true if this item has any children
* @return bool
*/
public function has_children() {
return (count($this->children) > 0);
}
/**
* Sets the text for the node
* @param string $text
*/
public function set_text($text) {
$this->text = (string)$text;
}
/**
* Sets the title for the node
* @param string $title
*/
public function set_title($title) {
$this->title = (string)$title;
}
/**
* Sets the url for the node
* @param moodle_url $url
*/
public function set_url(moodle_url $url) {
$this->url = $url;
}
/**
* Export this data so it can be used as the context for a mustache template.
*
* @param renderer_base $output Used to do a final render of any components that need to be rendered for export.
* @return array
*/
public function export_for_template(renderer_base $output) {
global $CFG;
require_once($CFG->libdir . '/externallib.php');
$syscontext = context_system::instance();
$context = new stdClass();
$context->text = external_format_string($this->text, $syscontext->id);
$context->url = $this->url ? $this->url->out() : null;
$context->title = external_format_string($this->title, $syscontext->id);
$context->sort = $this->sort;
$context->children = array();
if (preg_match("/^#+$/", $this->text)) {
$context->divider = true;
}
$context->haschildren = !empty($this->children) && (count($this->children) > 0);
foreach ($this->children as $child) {
$child = $child->export_for_template($output);
array_push($context->children, $child);
}
return $context;
}
}
/**
* Custom menu class
*
* This class is used to operate a custom menu that can be rendered for the page.
* The custom menu is built using $CFG->custommenuitems and is a structured collection
* of custom_menu_item nodes that can be rendered by the core renderer.
*
* To configure the custom menu:
* Settings: Administration > Appearance > Themes > Theme settings
*
* @copyright 2010 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @package core
* @category output
*/
class custom_menu extends custom_menu_item {
/**
* @var string The language we should render for, null disables multilang support.
*/
protected $currentlanguage = null;
/**
* Creates the custom menu
*
* @param string $definition the menu items definition in syntax required by {@link convert_text_to_menu_nodes()}
* @param string $currentlanguage the current language code, null disables multilang support
*/
public function __construct($definition = '', $currentlanguage = null) {
$this->currentlanguage = $currentlanguage;
parent::__construct('root'); // create virtual root element of the menu
if (!empty($definition)) {
$this->override_children(self::convert_text_to_menu_nodes($definition, $currentlanguage));
}
}
/**
* Overrides the children of this custom menu. Useful when getting children
* from $CFG->custommenuitems
*
* @param array $children
*/
public function override_children(array $children) {
$this->children = array();
foreach ($children as $child) {
if ($child instanceof custom_menu_item) {
$this->children[] = $child;
}
}
}
/**
* Converts a string into a structured array of custom_menu_items which can
* then be added to a custom menu.
*
* Structure:
* text|url|title|langs
* The number of hyphens at the start determines the depth of the item. The
* languages are optional, comma separated list of languages the line is for.
*
* Example structure:
* First level first item|http://www.moodle.com/
* -Second level first item|http://www.moodle.com/partners/
* -Second level second item|http://www.moodle.com/hq/
* --Third level first item|http://www.moodle.com/jobs/
* -Second level third item|http://www.moodle.com/development/
* First level second item|http://www.moodle.com/feedback/
* First level third item
* English only|http://moodle.com|English only item|en
* German only|http://moodle.de|Deutsch|de,de_du,de_kids
*
*
* @static
* @param string $text the menu items definition
* @param string $language the language code, null disables multilang support
* @return array
*/
public static function convert_text_to_menu_nodes($text, $language = null) {
$root = new custom_menu();
$lastitem = $root;
$lastdepth = 0;
$hiddenitems = array();
$lines = explode("\n", $text);
foreach ($lines as $linenumber => $line) {
$line = trim($line);
if (strlen($line) == 0) {
continue;
}
// Parse item settings.
$itemtext = null;
$itemurl = null;
$itemtitle = null;
$itemvisible = true;
$settings = explode('|', $line);
foreach ($settings as $i => $setting) {
$setting = trim($setting);
if (!empty($setting)) {
switch ($i) {
case 0: // Menu text.
$itemtext = ltrim($setting, '-');
break;
case 1: // URL.
try {
$itemurl = new moodle_url($setting);
} catch (moodle_exception $exception) {
// We're not actually worried about this, we don't want to mess up the display
// just for a wrongly entered URL.
$itemurl = null;
}
break;
case 2: // Title attribute.
$itemtitle = $setting;
break;
case 3: // Language.
if (!empty($language)) {
$itemlanguages = array_map('trim', explode(',', $setting));
$itemvisible &= in_array($language, $itemlanguages);
}
break;
}
}
}
// Get depth of new item.
preg_match('/^(\-*)/', $line, $match);
$itemdepth = strlen($match[1]) + 1;
// Find parent item for new item.
while (($lastdepth - $itemdepth) >= 0) {
$lastitem = $lastitem->get_parent();
$lastdepth--;
}
$lastitem = $lastitem->add($itemtext, $itemurl, $itemtitle, $linenumber + 1);
$lastdepth++;
if (!$itemvisible) {
$hiddenitems[] = $lastitem;
}
}
foreach ($hiddenitems as $item) {
$item->parent->remove_child($item);
}
return $root->get_children();
}
/**
* Sorts two custom menu items
*
* This function is designed to be used with the usort method
* usort($this->children, array('custom_menu','sort_custom_menu_items'));
*
* @static
* @param custom_menu_item $itema
* @param custom_menu_item $itemb
* @return int
*/
public static function sort_custom_menu_items(custom_menu_item $itema, custom_menu_item $itemb) {
$itema = $itema->get_sort_order();
$itemb = $itemb->get_sort_order();
if ($itema == $itemb) {
return 0;
}
return ($itema > $itemb) ? +1 : -1;
}
}
/**
* Stores one tab
*
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core
*/
class tabobject implements renderable, templatable {
/** @var string unique id of the tab in this tree, it is used to find selected and/or inactive tabs */
var $id;
/** @var moodle_url|string link */
var $link;
/** @var string text on the tab */
var $text;
/** @var string title under the link, by defaul equals to text */
var $title;
/** @var bool whether to display a link under the tab name when it's selected */
var $linkedwhenselected = false;
/** @var bool whether the tab is inactive */
var $inactive = false;
/** @var bool indicates that this tab's child is selected */
var $activated = false;
/** @var bool indicates that this tab is selected */
var $selected = false;
/** @var array stores children tabobjects */
var $subtree = array();
/** @var int level of tab in the tree, 0 for root (instance of tabtree), 1 for the first row of tabs */
var $level = 1;
/**
* Constructor
*
* @param string $id unique id of the tab in this tree, it is used to find selected and/or inactive tabs
* @param string|moodle_url $link
* @param string $text text on the tab
* @param string $title title under the link, by defaul equals to text
* @param bool $linkedwhenselected whether to display a link under the tab name when it's selected
*/
public function __construct($id, $link = null, $text = '', $title = '', $linkedwhenselected = false) {
$this->id = $id;
$this->link = $link;
$this->text = $text;
$this->title = $title ? $title : $text;
$this->linkedwhenselected = $linkedwhenselected;
}
/**
* Travels through tree and finds the tab to mark as selected, all parents are automatically marked as activated
*
* @param string $selected the id of the selected tab (whatever row it's on),
* if null marks all tabs as unselected
* @return bool whether this tab is selected or contains selected tab in its subtree
*/
protected function set_selected($selected) {
if ((string)$selected === (string)$this->id) {
$this->selected = true;
// This tab is selected. No need to travel through subtree.
return true;
}
foreach ($this->subtree as $subitem) {
if ($subitem->set_selected($selected)) {
// This tab has child that is selected. Mark it as activated. No need to check other children.
$this->activated = true;
return true;
}
}
return false;
}
/**
* Travels through tree and finds a tab with specified id
*
* @param string $id
* @return tabtree|null
*/
public function find($id) {
if ((string)$this->id === (string)$id) {
return $this;
}
foreach ($this->subtree as $tab) {
if ($obj = $tab->find($id)) {
return $obj;
}
}
return null;
}
/**
* Allows to mark each tab's level in the tree before rendering.
*
* @param int $level
*/
protected function set_level($level) {
$this->level = $level;
foreach ($this->subtree as $tab) {
$tab->set_level($level + 1);
}
}
/**
* Export for template.
*
* @param renderer_base $output Renderer.
* @return object
*/
public function export_for_template(renderer_base $output) {
if ($this->inactive || ($this->selected && !$this->linkedwhenselected) || $this->activated) {
$link = null;
} else {
$link = $this->link;
}
$active = $this->activated || $this->selected;
return (object) [
'id' => $this->id,
'link' => is_object($link) ? $link->out(false) : $link,
'text' => $this->text,
'title' => $this->title,
'inactive' => !$active && $this->inactive,
'active' => $active,
'level' => $this->level,
];
}
}
/**
* Renderable for the main page header.
*
* @package core
* @category output
* @since 2.9
* @copyright 2015 Adrian Greeve <adrian@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class context_header implements renderable {
/**
* @var string $heading Main heading.
*/
public $heading;
/**
* @var int $headinglevel Main heading 'h' tag level.
*/
public $headinglevel;
/**
* @var string|null $imagedata HTML code for the picture in the page header.
*/
public $imagedata;
/**
* @var array $additionalbuttons Additional buttons for the header e.g. Messaging button for the user header.
* array elements - title => alternate text for the image, or if no image is available the button text.
* url => Link for the button to head to. Should be a moodle_url.
* image => location to the image, or name of the image in /pix/t/{image name}.
* linkattributes => additional attributes for the <a href> element.
* page => page object. Don't include if the image is an external image.
*/
public $additionalbuttons;
/**
* Constructor.
*
* @param string $heading Main heading data.
* @param int $headinglevel Main heading 'h' tag level.
* @param string|null $imagedata HTML code for the picture in the page header.
* @param string $additionalbuttons Buttons for the header e.g. Messaging button for the user header.
*/
public function __construct($heading = null, $headinglevel = 1, $imagedata = null, $additionalbuttons = null) {
$this->heading = $heading;
$this->headinglevel = $headinglevel;
$this->imagedata = $imagedata;
$this->additionalbuttons = $additionalbuttons;
// If we have buttons then format them.
if (isset($this->additionalbuttons)) {
$this->format_button_images();
}
}
/**
* Adds an array element for a formatted image.
*/
protected function format_button_images() {
foreach ($this->additionalbuttons as $buttontype => $button) {
$page = $button['page'];
// If no image is provided then just use the title.
if (!isset($button['image'])) {
$this->additionalbuttons[$buttontype]['formattedimage'] = $button['title'];
} else {
// Check to see if this is an internal Moodle icon.
$internalimage = $page->theme->resolve_image_location('t/' . $button['image'], 'moodle');
if ($internalimage) {
$this->additionalbuttons[$buttontype]['formattedimage'] = 't/' . $button['image'];
} else {
// Treat as an external image.
$this->additionalbuttons[$buttontype]['formattedimage'] = $button['image'];
}
}
if (isset($button['linkattributes']['class'])) {
$class = $button['linkattributes']['class'] . ' btn';
} else {
$class = 'btn';
}
// Add the bootstrap 'btn' class for formatting.
$this->additionalbuttons[$buttontype]['linkattributes'] = array_merge($button['linkattributes'],
array('class' => $class));
}
}
}
/**
* Stores tabs list
*
* Example how to print a single line tabs:
* $rows = array(
* new tabobject(...),
* new tabobject(...)
* );
* echo $OUTPUT->tabtree($rows, $selectedid);
*
* Multiple row tabs may not look good on some devices but if you want to use them
* you can specify ->subtree for the active tabobject.
*
* @copyright 2013 Marina Glancy
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.5
* @package core
* @category output
*/
class tabtree extends tabobject {
/**
* Constuctor
*
* It is highly recommended to call constructor when list of tabs is already
* populated, this way you ensure that selected and inactive tabs are located
* and attribute level is set correctly.
*
* @param array $tabs array of tabs, each of them may have it's own ->subtree
* @param string|null $selected which tab to mark as selected, all parent tabs will
* automatically be marked as activated
* @param array|string|null $inactive list of ids of inactive tabs, regardless of
* their level. Note that you can as weel specify tabobject::$inactive for separate instances
*/
public function __construct($tabs, $selected = null, $inactive = null) {
$this->subtree = $tabs;
if ($selected !== null) {
$this->set_selected($selected);
}
if ($inactive !== null) {
if (is_array($inactive)) {
foreach ($inactive as $id) {
if ($tab = $this->find($id)) {
$tab->inactive = true;
}
}
} else if ($tab = $this->find($inactive)) {
$tab->inactive = true;
}
}
$this->set_level(0);
}
/**
* Export for template.
*
* @param renderer_base $output Renderer.
* @return object
*/
public function export_for_template(renderer_base $output) {
$tabs = [];
$secondrow = false;
foreach ($this->subtree as $tab) {
$tabs[] = $tab->export_for_template($output);
if (!empty($tab->subtree) && ($tab->level == 0 || $tab->selected || $tab->activated)) {
$secondrow = new tabtree($tab->subtree);
}
}
return (object) [
'tabs' => $tabs,
'secondrow' => $secondrow ? $secondrow->export_for_template($output) : false
];
}
}
/**
* An action menu.
*
* This action menu component takes a series of primary and secondary actions.
* The primary actions are displayed permanently and the secondary attributes are displayed within a drop
* down menu.
*
* @package core
* @category output
* @copyright 2013 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class action_menu implements renderable, templatable {
/**
* Top right alignment.
*/
const TL = 1;
/**
* Top right alignment.
*/
const TR = 2;
/**
* Top right alignment.
*/
const BL = 3;
/**
* Top right alignment.
*/
const BR = 4;
/**
* The instance number. This is unique to this instance of the action menu.
* @var int
*/
protected $instance = 0;
/**
* An array of primary actions. Please use {@link action_menu::add_primary_action()} to add actions.
* @var array
*/
protected $primaryactions = array();
/**
* An array of secondary actions. Please use {@link action_menu::add_secondary_action()} to add actions.
* @var array
*/
protected $secondaryactions = array();
/**
* An array of attributes added to the container of the action menu.
* Initialised with defaults during construction.
* @var array
*/
public $attributes = array();
/**
* An array of attributes added to the container of the primary actions.
* Initialised with defaults during construction.
* @var array
*/
public $attributesprimary = array();
/**
* An array of attributes added to the container of the secondary actions.
* Initialised with defaults during construction.
* @var array
*/
public $attributessecondary = array();
/**
* The string to use next to the icon for the action icon relating to the secondary (dropdown) menu.
* @var array
*/
public $actiontext = null;
/**
* The string to use for the accessible label for the menu.
* @var array
*/
public $actionlabel = null;
/**
* An icon to use for the toggling the secondary menu (dropdown).
* @var pix_icon
*/
public $actionicon;
/**
* Any text to use for the toggling the secondary menu (dropdown).
* @var string
*/
public $menutrigger = '';
/**
* Any extra classes for toggling to the secondary menu.
* @var string
*/
public $triggerextraclasses = '';
/**
* Place the action menu before all other actions.
* @var bool
*/
public $prioritise = false;
/**
* Constructs the action menu with the given items.
*
* @param array $actions An array of actions (action_menu_link|pix_icon|string).
*/
public function __construct(array $actions = array()) {
static $initialised = 0;
$this->instance = $initialised;
$initialised++;
$this->attributes = array(
'id' => 'action-menu-'.$this->instance,
'class' => 'moodle-actionmenu',
'data-enhance' => 'moodle-core-actionmenu'
);
$this->attributesprimary = array(
'id' => 'action-menu-'.$this->instance.'-menubar',
'class' => 'menubar',
'role' => 'menubar'
);
$this->attributessecondary = array(
'id' => 'action-menu-'.$this->instance.'-menu',
'class' => 'menu',
'data-rel' => 'menu-content',
'aria-labelledby' => 'action-menu-toggle-'.$this->instance,
'role' => 'menu'
);
$this->set_alignment(self::TR, self::BR);
foreach ($actions as $action) {
$this->add($action);
}
}
/**
* Sets the label for the menu trigger.
*
* @param string $label The text
*/
public function set_action_label($label) {
$this->actionlabel = $label;
}
/**
* Sets the menu trigger text.
*
* @param string $trigger The text
* @param string $extraclasses Extra classes to style the secondary menu toggle.
*/
public function set_menu_trigger($trigger, $extraclasses = '') {
$this->menutrigger = $trigger;
$this->triggerextraclasses = $extraclasses;
}
/**
* Return true if there is at least one visible link in the menu.
*
* @return bool
*/
public function is_empty() {
return !count($this->primaryactions) && !count($this->secondaryactions);
}
/**
* Initialises JS required fore the action menu.
* The JS is only required once as it manages all action menu's on the page.
*
* @param moodle_page $page
*/
public function initialise_js(moodle_page $page) {
static $initialised = false;
if (!$initialised) {
$page->requires->yui_module('moodle-core-actionmenu', 'M.core.actionmenu.init');
$initialised = true;
}
}
/**
* Adds an action to this action menu.
*
* @param action_menu_link|pix_icon|string $action
*/
public function add($action) {
if ($action instanceof action_link) {
if ($action->primary) {
$this->add_primary_action($action);
} else {
$this->add_secondary_action($action);
}
} else if ($action instanceof pix_icon) {
$this->add_primary_action($action);
} else {
$this->add_secondary_action($action);
}
}
/**
* Adds a primary action to the action menu.
*
* @param action_menu_link|action_link|pix_icon|string $action
*/
public function add_primary_action($action) {
if ($action instanceof action_link || $action instanceof pix_icon) {
$action->attributes['role'] = 'menuitem';
if ($action instanceof action_menu_link) {
$action->actionmenu = $this;
}
}
$this->primaryactions[] = $action;
}
/**
* Adds a secondary action to the action menu.
*
* @param action_link|pix_icon|string $action
*/
public function add_secondary_action($action) {
if ($action instanceof action_link || $action instanceof pix_icon) {
$action->attributes['role'] = 'menuitem';
if ($action instanceof action_menu_link) {
$action->actionmenu = $this;
}
}
$this->secondaryactions[] = $action;
}
/**
* Returns the primary actions ready to be rendered.
*
* @param core_renderer $output The renderer to use for getting icons.
* @return array
*/
public function get_primary_actions(core_renderer $output = null) {
global $OUTPUT;
if ($output === null) {
$output = $OUTPUT;
}
$pixicon = $this->actionicon;
$linkclasses = array('toggle-display');
$title = '';
if (!empty($this->menutrigger)) {
$pixicon = '<b class="caret"></b>';
$linkclasses[] = 'textmenu';
} else {
$title = new lang_string('actionsmenu', 'moodle');
$this->actionicon = new pix_icon(
't/edit_menu',
'',
'moodle',
array('class' => 'iconsmall actionmenu', 'title' => '')
);
$pixicon = $this->actionicon;
}
if ($pixicon instanceof renderable) {
$pixicon = $output->render($pixicon);
if ($pixicon instanceof pix_icon && isset($pixicon->attributes['alt'])) {
$title = $pixicon->attributes['alt'];
}
}
$string = '';
if ($this->actiontext) {
$string = $this->actiontext;
}
$label = '';
if ($this->actionlabel) {
$label = $this->actionlabel;
} else {
$label = $title;
}
$actions = $this->primaryactions;
$attributes = array(
'class' => implode(' ', $linkclasses),
'title' => $title,
'aria-label' => $label,
'id' => 'action-menu-toggle-'.$this->instance,
'role' => 'menuitem'
);
$link = html_writer::link('#', $string . $this->menutrigger . $pixicon, $attributes);
if ($this->prioritise) {
array_unshift($actions, $link);
} else {
$actions[] = $link;
}
return $actions;
}
/**
* Returns the secondary actions ready to be rendered.
* @return array
*/
public function get_secondary_actions() {
return $this->secondaryactions;
}
/**
* Sets the selector that should be used to find the owning node of this menu.
* @param string $selector A CSS/YUI selector to identify the owner of the menu.
*/
public function set_owner_selector($selector) {
$this->attributes['data-owner'] = $selector;
}
/**
* Sets the alignment of the dialogue in relation to button used to toggle it.
*
* @param int $dialogue One of action_menu::TL, action_menu::TR, action_menu::BL, action_menu::BR.
* @param int $button One of action_menu::TL, action_menu::TR, action_menu::BL, action_menu::BR.
*/
public function set_alignment($dialogue, $button) {
if (isset($this->attributessecondary['data-align'])) {
// We've already got one set, lets remove the old class so as to avoid troubles.
$class = $this->attributessecondary['class'];
$search = 'align-'.$this->attributessecondary['data-align'];
$this->attributessecondary['class'] = str_replace($search, '', $class);
}
$align = $this->get_align_string($dialogue) . '-' . $this->get_align_string($button);
$this->attributessecondary['data-align'] = $align;
$this->attributessecondary['class'] .= ' align-'.$align;
}
/**
* Returns a string to describe the alignment.
*
* @param int $align One of action_menu::TL, action_menu::TR, action_menu::BL, action_menu::BR.
* @return string
*/
protected function get_align_string($align) {
switch ($align) {
case self::TL :
return 'tl';
case self::TR :
return 'tr';
case self::BL :
return 'bl';
case self::BR :
return 'br';
default :
return 'tl';
}
}
/**
* Sets a constraint for the dialogue.
*
* The constraint is applied when the dialogue is shown and limits the display of the dialogue to within the
* element the constraint identifies.
*
* This is required whenever the action menu is displayed inside any CSS element with the .no-overflow class
* (flexible_table and any of it's child classes are a likely candidate).
*
* @param string $ancestorselector A snippet of CSS used to identify the ancestor to contrain the dialogue to.
*/
public function set_constraint($ancestorselector) {
$this->attributessecondary['data-constraint'] = $ancestorselector;
}
/**
* If you call this method the action menu will be displayed but will not be enhanced.
*
* By not displaying the menu enhanced all items will be displayed in a single row.
*
* @deprecated since Moodle 3.2
*/
public function do_not_enhance() {
debugging('The method action_menu::do_not_enhance() is deprecated, use a list of action_icon instead.', DEBUG_DEVELOPER);
}
/**
* Returns true if this action menu will be enhanced.
*
* @return bool
*/
public function will_be_enhanced() {
return isset($this->attributes['data-enhance']);
}
/**
* Sets nowrap on items. If true menu items should not wrap lines if they are longer than the available space.
*
* This property can be useful when the action menu is displayed within a parent element that is either floated
* or relatively positioned.
* In that situation the width of the menu is determined by the width of the parent element which may not be large
* enough for the menu items without them wrapping.
* This disables the wrapping so that the menu takes on the width of the longest item.
*
* @param bool $value If true nowrap gets set, if false it gets removed. Defaults to true.
*/
public function set_nowrap_on_items($value = true) {
$class = 'nowrap-items';
if (!empty($this->attributes['class'])) {
$pos = strpos($this->attributes['class'], $class);
if ($value === true && $pos === false) {
// The value is true and the class has not been set yet. Add it.
$this->attributes['class'] .= ' '.$class;
} else if ($value === false && $pos !== false) {
// The value is false and the class has been set. Remove it.
$this->attributes['class'] = substr($this->attributes['class'], $pos, strlen($class));
}
} else if ($value) {
// The value is true and the class has not been set yet. Add it.
$this->attributes['class'] = $class;
}
}
/**
* Export for template.
*
* @param renderer_base $output The renderer.
* @return stdClass
*/
public function export_for_template(renderer_base $output) {
$data = new stdClass();
$attributes = $this->attributes;
$attributesprimary = $this->attributesprimary;
$attributessecondary = $this->attributessecondary;
$data->instance = $this->instance;
$data->classes = isset($attributes['class']) ? $attributes['class'] : '';
unset($attributes['class']);
$data->attributes = array_map(function($key, $value) {
return [ 'name' => $key, 'value' => $value ];
}, array_keys($attributes), $attributes);
$primary = new stdClass();
$primary->title = '';
$primary->prioritise = $this->prioritise;
$primary->classes = isset($attributesprimary['class']) ? $attributesprimary['class'] : '';
unset($attributesprimary['class']);
$primary->attributes = array_map(function($key, $value) {
return [ 'name' => $key, 'value' => $value ];
}, array_keys($attributesprimary), $attributesprimary);
$actionicon = $this->actionicon;
if (!empty($this->menutrigger)) {
$primary->menutrigger = $this->menutrigger;
$primary->triggerextraclasses = $this->triggerextraclasses;
if ($this->actionlabel) {
$primary->title = $this->actionlabel;
} else if ($this->actiontext) {
$primary->title = $this->actiontext;
} else {
$primary->title = strip_tags($this->menutrigger);
}
} else {
$primary->title = get_string('actionsmenu');
$iconattributes = ['class' => 'iconsmall actionmenu', 'title' => $primary->title];
$actionicon = new pix_icon('t/edit_menu', '', 'moodle', $iconattributes);
}
if ($actionicon instanceof pix_icon) {
$primary->icon = $actionicon->export_for_pix();
if (!empty($actionicon->attributes['alt'])) {
$primary->title = $actionicon->attributes['alt'];
}
} else {
$primary->iconraw = $actionicon ? $output->render($actionicon) : '';
}
$primary->actiontext = $this->actiontext ? (string) $this->actiontext : '';
$primary->items = array_map(function($item) use ($output) {
$data = (object) [];
if ($item instanceof action_menu_link) {
$data->actionmenulink = $item->export_for_template($output);
} else if ($item instanceof action_menu_filler) {
$data->actionmenufiller = $item->export_for_template($output);
} else if ($item instanceof action_link) {
$data->actionlink = $item->export_for_template($output);
} else if ($item instanceof pix_icon) {
$data->pixicon = $item->export_for_template($output);
} else {
$data->rawhtml = ($item instanceof renderable) ? $output->render($item) : $item;
}
return $data;
}, $this->primaryactions);
$secondary = new stdClass();
$secondary->classes = isset($attributessecondary['class']) ? $attributessecondary['class'] : '';
unset($attributessecondary['class']);
$secondary->attributes = array_map(function($key, $value) {
return [ 'name' => $key, 'value' => $value ];
}, array_keys($attributessecondary), $attributessecondary);
$secondary->items = array_map(function($item) use ($output) {
$data = (object) [];
if ($item instanceof action_menu_link) {
$data->actionmenulink = $item->export_for_template($output);
} else if ($item instanceof action_menu_filler) {
$data->actionmenufiller = $item->export_for_template($output);
} else if ($item instanceof action_link) {
$data->actionlink = $item->export_for_template($output);
} else if ($item instanceof pix_icon) {
$data->pixicon = $item->export_for_template($output);
} else {
$data->rawhtml = ($item instanceof renderable) ? $output->render($item) : $item;
}
return $data;
}, $this->secondaryactions);
$data->primary = $primary;
$data->secondary = $secondary;
return $data;
}
}
/**
* An action menu filler
*
* @package core
* @category output
* @copyright 2013 Andrew Nicols
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class action_menu_filler extends action_link implements renderable {
/**
* True if this is a primary action. False if not.
* @var bool
*/
public $primary = true;
/**
* Constructs the object.
*/
public function __construct() {
}
}
/**
* An action menu action
*
* @package core
* @category output
* @copyright 2013 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class action_menu_link extends action_link implements renderable {
/**
* True if this is a primary action. False if not.
* @var bool
*/
public $primary = true;
/**
* The action menu this link has been added to.
* @var action_menu
*/
public $actionmenu = null;
/**
* Constructs the object.
*
* @param moodle_url $url The URL for the action.
* @param pix_icon $icon The icon to represent the action.
* @param string $text The text to represent the action.
* @param bool $primary Whether this is a primary action or not.
* @param array $attributes Any attribtues associated with the action.
*/
public function __construct(moodle_url $url, pix_icon $icon = null, $text, $primary = true, array $attributes = array()) {
parent::__construct($url, $text, null, $attributes, $icon);
$this->primary = (bool)$primary;
$this->add_class('menu-action');
$this->attributes['role'] = 'menuitem';
}
/**
* Export for template.
*
* @param renderer_base $output The renderer.
* @return stdClass
*/
public function export_for_template(renderer_base $output) {
static $instance = 1;
$data = parent::export_for_template($output);
$data->instance = $instance++;
// Ignore what the parent did with the attributes, except for ID and class.
$data->attributes = [];
$attributes = $this->attributes;
unset($attributes['id']);
unset($attributes['class']);
// Handle text being a renderable.
if ($this->text instanceof renderable) {
$data->text = $this->render($this->text);
}
$data->showtext = (!$this->icon || $this->primary === false);
$data->icon = null;
if ($this->icon) {
$icon = $this->icon;
if ($this->primary || !$this->actionmenu->will_be_enhanced()) {
$attributes['title'] = $data->text;
}
$data->icon = $icon ? $icon->export_for_pix() : null;
}
$data->disabled = !empty($attributes['disabled']);
unset($attributes['disabled']);
$data->attributes = array_map(function($key, $value) {
return [
'name' => $key,
'value' => $value
];
}, array_keys($attributes), $attributes);
return $data;
}
}
/**
* A primary action menu action
*
* @package core
* @category output
* @copyright 2013 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class action_menu_link_primary extends action_menu_link {
/**
* Constructs the object.
*
* @param moodle_url $url
* @param pix_icon $icon
* @param string $text
* @param array $attributes
*/
public function __construct(moodle_url $url, pix_icon $icon = null, $text, array $attributes = array()) {
parent::__construct($url, $icon, $text, true, $attributes);
}
}
/**
* A secondary action menu action
*
* @package core
* @category output
* @copyright 2013 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class action_menu_link_secondary extends action_menu_link {
/**
* Constructs the object.
*
* @param moodle_url $url
* @param pix_icon $icon
* @param string $text
* @param array $attributes
*/
public function __construct(moodle_url $url, pix_icon $icon = null, $text, array $attributes = array()) {
parent::__construct($url, $icon, $text, false, $attributes);
}
}
/**
* Represents a set of preferences groups.
*
* @package core
* @category output
* @copyright 2015 Frédéric Massart - FMCorz.net
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class preferences_groups implements renderable {
/**
* Array of preferences_group.
* @var array
*/
public $groups;
/**
* Constructor.
* @param array $groups of preferences_group
*/
public function __construct($groups) {
$this->groups = $groups;
}
}
/**
* Represents a group of preferences page link.
*
* @package core
* @category output
* @copyright 2015 Frédéric Massart - FMCorz.net
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class preferences_group implements renderable {
/**
* Title of the group.
* @var string
*/
public $title;
/**
* Array of navigation_node.
* @var array
*/
public $nodes;
/**
* Constructor.
* @param string $title The title.
* @param array $nodes of navigation_node.
*/
public function __construct($title, $nodes) {
$this->title = $title;
$this->nodes = $nodes;
}
}
/**
* Progress bar class.
*
* Manages the display of a progress bar.
*
* To use this class.
* - construct
* - call create (or use the 3rd param to the constructor)
* - call update or update_full() or update() repeatedly
*
* @copyright 2008 jamiesensei
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core
* @category output
*/
class progress_bar implements renderable, templatable {
/** @var string html id */
private $html_id;
/** @var int total width */
private $width;
/** @var int last percentage printed */
private $percent = 0;
/** @var int time when last printed */
private $lastupdate = 0;
/** @var int when did we start printing this */
private $time_start = 0;
/**
* Constructor
*
* Prints JS code if $autostart true.
*
* @param string $htmlid The container ID.
* @param int $width The suggested width.
* @param bool $autostart Whether to start the progress bar right away.
*/
public function __construct($htmlid = '', $width = 500, $autostart = false) {
if (!CLI_SCRIPT && !NO_OUTPUT_BUFFERING) {
debugging('progress_bar used in a non-CLI script without setting NO_OUTPUT_BUFFERING.', DEBUG_DEVELOPER);
}
if (!empty($htmlid)) {
$this->html_id = $htmlid;
} else {
$this->html_id = 'pbar_'.uniqid();
}
$this->width = $width;
if ($autostart) {
$this->create();
}
}
/**
* Create a new progress bar, this function will output html.
*
* @return void Echo's output
*/
public function create() {
global $OUTPUT;
$this->time_start = microtime(true);
if (CLI_SCRIPT) {
return; // Temporary solution for cli scripts.
}
flush();
echo $OUTPUT->render($this);
flush();
}
/**
* Update the progress bar.
*
* @param int $percent From 1-100.
* @param string $msg The message.
* @return void Echo's output
* @throws coding_exception
*/
private function _update($percent, $msg) {
if (empty($this->time_start)) {
throw new coding_exception('You must call create() (or use the $autostart ' .
'argument to the constructor) before you try updating the progress bar.');
}
if (CLI_SCRIPT) {
return; // Temporary solution for cli scripts.
}
$estimate = $this->estimate($percent);
if ($estimate === null) {
// Always do the first and last updates.
} else if ($estimate == 0) {
// Always do the last updates.
} else if ($this->lastupdate + 20 < time()) {
// We must update otherwise browser would time out.
} else if (round($this->percent, 2) === round($percent, 2)) {
// No significant change, no need to update anything.
return;
}
$estimatemsg = null;
if (is_numeric($estimate)) {
$estimatemsg = get_string('secondsleft', 'moodle', round($estimate, 2));
}
$this->percent = round($percent, 2);
$this->lastupdate = microtime(true);
echo html_writer::script(js_writer::function_call('updateProgressBar',
array($this->html_id, $this->percent, $msg, $estimatemsg)));
flush();
}
/**
* Estimate how much time it is going to take.
*
* @param int $pt From 1-100.
* @return mixed Null (unknown), or int.
*/
private function estimate($pt) {
if ($this->lastupdate == 0) {
return null;
}
if ($pt < 0.00001) {
return null; // We do not know yet how long it will take.
}
if ($pt > 99.99999) {
return 0; // Nearly done, right?
}
$consumed = microtime(true) - $this->time_start;
if ($consumed < 0.001) {
return null;
}
return (100 - $pt) * ($consumed / $pt);
}
/**
* Update progress bar according percent.
*
* @param int $percent From 1-100.
* @param string $msg The message needed to be shown.
*/
public function update_full($percent, $msg) {
$percent = max(min($percent, 100), 0);
$this->_update($percent, $msg);
}
/**
* Update progress bar according the number of tasks.
*
* @param int $cur Current task number.
* @param int $total Total task number.
* @param string $msg The message needed to be shown.
*/
public function update($cur, $total, $msg) {
$percent = ($cur / $total) * 100;
$this->update_full($percent, $msg);
}
/**
* Restart the progress bar.
*/
public function restart() {
$this->percent = 0;
$this->lastupdate = 0;
$this->time_start = 0;
}
/**
* Export for template.
*
* @param renderer_base $output The renderer.
* @return array
*/
public function export_for_template(renderer_base $output) {
return [
'id' => $this->html_id,
'width' => $this->width,
];
}
}