<?php
/**
* @file
* The theme system, which controls the output of Drupal.
*
* The theme system allows for nearly all output of the Drupal system to be
* customized by user themes.
*/
use Drupal\Component\Serialization\Json;
use Drupal\Component\Utility\Crypt;
use Drupal\Component\Utility\Html;
use Drupal\Component\Utility\SafeMarkup;
use Drupal\Component\Utility\Unicode;
use Drupal\Component\Utility\Xss;
use Drupal\Core\Config\Config;
use Drupal\Core\Config\StorageException;
use Drupal\Core\Template\Attribute;
use Drupal\Core\Theme\ThemeSettings;
use Drupal\Component\Utility\NestedArray;
use Drupal\Core\Render\Element;
use Drupal\Core\Render\SafeString;
/**
* @defgroup content_flags Content markers
* @{
* Markers used by mark.html.twig and node_mark() to designate content.
*
* @see mark.html.twig
* @see node_mark()
*/
/**
* Mark content as read.
*/
const MARK_READ = 0;
/**
* Mark content as being new.
*/
const MARK_NEW = 1;
/**
* Mark content as being updated.
*/
const MARK_UPDATED = 2;
/**
* A responsive table class; hide table cell on narrow devices.
*
* Indicates that a column has medium priority and thus can be hidden on narrow
* width devices and shown on medium+ width devices (i.e. tablets and desktops).
*/
const RESPONSIVE_PRIORITY_MEDIUM = 'priority-medium';
/**
* A responsive table class; only show table cell on wide devices.
*
* Indicates that a column has low priority and thus can be hidden on narrow
* and medium viewports and shown on wide devices (i.e. desktops).
*/
const RESPONSIVE_PRIORITY_LOW = 'priority-low';
/**
* @} End of "defgroup content_flags".
*/
/**
* Gets the theme registry.
*
* @param bool $complete
* Optional boolean to indicate whether to return the complete theme registry
* array or an instance of the Drupal\Core\Utility\ThemeRegistry class.
* If TRUE, the complete theme registry array will be returned. This is useful
* if you want to foreach over the whole registry, use array_* functions or
* inspect it in a debugger. If FALSE, an instance of the
* Drupal\Core\Utility\ThemeRegistry class will be returned, this provides an
* ArrayObject which allows it to be accessed with array syntax and isset(),
* and should be more lightweight than the full registry. Defaults to TRUE.
*
* @return
* The complete theme registry array, or an instance of the
* Drupal\Core\Utility\ThemeRegistry class.
*/
function theme_get_registry($complete = TRUE) {
$theme_registry = \Drupal::service('theme.registry');
if ($complete) {
return $theme_registry->get();
}
else {
return $theme_registry->getRuntime();
}
}
/**
* Forces the system to rebuild the theme registry.
*
* This function should be called when modules are added to the system, or when
* a dynamic system needs to add more theme hooks.
*/
function drupal_theme_rebuild() {
\Drupal::service('theme.registry')->reset();
}
/**
* Allows themes and/or theme engines to discover overridden theme functions.
*
* @param array $cache
* The existing cache of theme hooks to test against.
* @param array $prefixes
* An array of prefixes to test, in reverse order of importance.
*
* @return array
* The functions found, suitable for returning from hook_theme;
*/
function drupal_find_theme_functions($cache, $prefixes) {
$implementations = [];
$grouped_functions = \Drupal::service('theme.registry')->getPrefixGroupedUserFunctions();
foreach ($cache as $hook => $info) {
foreach ($prefixes as $prefix) {
// Find theme functions that implement possible "suggestion" variants of
// registered theme hooks and add those as new registered theme hooks.
// The 'pattern' key defines a common prefix that all suggestions must
// start with. The default is the name of the hook followed by '__'. An
// 'base hook' key is added to each entry made for a found suggestion,
// so that common functionality can be implemented for all suggestions of
// the same base hook. To keep things simple, deep hierarchy of
// suggestions is not supported: each suggestion's 'base hook' key
// refers to a base hook, not to another suggestion, and all suggestions
// are found using the base hook's pattern, not a pattern from an
// intermediary suggestion.
$pattern = isset($info['pattern']) ? $info['pattern'] : ($hook . '__');
// Grep only the functions which are within the prefix group.
list($first_prefix,) = explode('_', $prefix, 2);
if (!isset($info['base hook']) && !empty($pattern) && isset($grouped_functions[$first_prefix])) {
$matches = preg_grep('/^' . $prefix . '_' . $pattern . '/', $grouped_functions[$first_prefix]);
if ($matches) {
foreach ($matches as $match) {
$new_hook = substr($match, strlen($prefix) + 1);
$arg_name = isset($info['variables']) ? 'variables' : 'render element';
$implementations[$new_hook] = array(
'function' => $match,
$arg_name => $info[$arg_name],
'base hook' => $hook,
);
}
}
}
// Find theme functions that implement registered theme hooks and include
// that in what is returned so that the registry knows that the theme has
// this implementation.
if (function_exists($prefix . '_' . $hook)) {
$implementations[$hook] = array(
'function' => $prefix . '_' . $hook,
);
}
}
}
return $implementations;
}
/**
* Allows themes and/or theme engines to easily discover overridden templates.
*
* @param $cache
* The existing cache of theme hooks to test against.
* @param $extension
* The extension that these templates will have.
* @param $path
* The path to search.
*/
function drupal_find_theme_templates($cache, $extension, $path) {
$implementations = array();
// Collect paths to all sub-themes grouped by base themes. These will be
// used for filtering. This allows base themes to have sub-themes in its
// folder hierarchy without affecting the base themes template discovery.
$theme_paths = array();
foreach (\Drupal::service('theme_handler')->listInfo() as $theme_info) {
if (!empty($theme_info->base_theme)) {
$theme_paths[$theme_info->base_theme][$theme_info->getName()] = $theme_info->getPath();
}
}
foreach ($theme_paths as $basetheme => $subthemes) {
foreach ($subthemes as $subtheme => $subtheme_path) {
if (isset($theme_paths[$subtheme])) {
$theme_paths[$basetheme] = array_merge($theme_paths[$basetheme], $theme_paths[$subtheme]);
}
}
}
$theme = \Drupal::theme()->getActiveTheme()->getName();
$subtheme_paths = isset($theme_paths[$theme]) ? $theme_paths[$theme] : array();
// Escape the periods in the extension.
$regex = '/' . str_replace('.', '\.', $extension) . '$/';
// Get a listing of all template files in the path to search.
$files = file_scan_directory($path, $regex, array('key' => 'filename'));
// Find templates that implement registered theme hooks and include that in
// what is returned so that the registry knows that the theme has this
// implementation.
foreach ($files as $template => $file) {
// Ignore sub-theme templates for the current theme.
if (strpos($file->uri, str_replace($subtheme_paths, '', $file->uri)) !== 0) {
continue;
}
// Remove the extension from the filename.
$template = str_replace($extension, '', $template);
// Transform - in filenames to _ to match function naming scheme
// for the purposes of searching.
$hook = strtr($template, '-', '_');
if (isset($cache[$hook])) {
$implementations[$hook] = array(
'template' => $template,
'path' => dirname($file->uri),
);
}
// Match templates based on the 'template' filename.
foreach ($cache as $hook => $info) {
if (isset($info['template'])) {
$template_candidates = array($info['template'], str_replace($info['theme path'] . '/templates/', '', $info['template']));
if (in_array($template, $template_candidates)) {
$implementations[$hook] = array(
'template' => $template,
'path' => dirname($file->uri),
);
}
}
}
}
// Find templates that implement possible "suggestion" variants of registered
// theme hooks and add those as new registered theme hooks. See
// drupal_find_theme_functions() for more information about suggestions and
// the use of 'pattern' and 'base hook'.
$patterns = array_keys($files);
foreach ($cache as $hook => $info) {
$pattern = isset($info['pattern']) ? $info['pattern'] : ($hook . '__');
if (!isset($info['base hook']) && !empty($pattern)) {
// Transform _ in pattern to - to match file naming scheme
// for the purposes of searching.
$pattern = strtr($pattern, '_', '-');
$matches = preg_grep('/^' . $pattern . '/', $patterns);
if ($matches) {
foreach ($matches as $match) {
$file = $match;
// Remove the extension from the filename.
$file = str_replace($extension, '', $file);
// Put the underscores back in for the hook name and register this
// pattern.
$arg_name = isset($info['variables']) ? 'variables' : 'render element';
$implementations[strtr($file, '-', '_')] = array(
'template' => $file,
'path' => dirname($files[$match]->uri),
$arg_name => $info[$arg_name],
'base hook' => $hook,
);
}
}
}
}
return $implementations;
}
/**
* Retrieves a setting for the current theme or for a given theme.
*
* The final setting is obtained from the last value found in the following
* sources:
* - the saved values from the global theme settings form
* - the saved values from the theme's settings form
* To only retrieve the default global theme setting, an empty string should be
* given for $theme.
*
* @param $setting_name
* The name of the setting to be retrieved.
* @param $theme
* The name of a given theme; defaults to the current theme.
*
* @return
* The value of the requested setting, NULL if the setting does not exist.
*/
function theme_get_setting($setting_name, $theme = NULL) {
/** @var \Drupal\Core\Theme\ThemeSettings[] $cache */
$cache = &drupal_static(__FUNCTION__, array());
// If no key is given, use the current theme if we can determine it.
if (!isset($theme)) {
$theme = \Drupal::theme()->getActiveTheme()->getName();
}
if (empty($cache[$theme])) {
// Create a theme settings object.
$cache[$theme] = new ThemeSettings($theme);
// Get the global settings from configuration.
$cache[$theme]->setData(\Drupal::config('system.theme.global')->get());
// Get the values for the theme-specific settings from the .info.yml files
// of the theme and all its base themes.
$themes = \Drupal::service('theme_handler')->listInfo();
if (isset($themes[$theme])) {
$theme_object = $themes[$theme];
// Retrieve configured theme-specific settings, if any.
try {
if ($theme_settings = \Drupal::config($theme . '.settings')->get()) {
$cache[$theme]->merge($theme_settings);
}
}
catch (StorageException $e) {
}
// If the theme does not support a particular feature, override the global
// setting and set the value to NULL.
if (!empty($theme_object->info['features'])) {
foreach (_system_default_theme_features() as $feature) {
if (!in_array($feature, $theme_object->info['features'])) {
$cache[$theme]->set('features.' . $feature, NULL);
}
}
}
// Generate the path to the logo image.
if ($cache[$theme]->get('features.logo')) {
$logo_path = $cache[$theme]->get('logo.path');
if ($cache[$theme]->get('logo.use_default')) {
$cache[$theme]->set('logo.url', file_create_url($theme_object->getPath() . '/logo.svg'));
}
elseif ($logo_path) {
$cache[$theme]->set('logo.url', file_create_url($logo_path));
}
}
// Generate the path to the favicon.
if ($cache[$theme]->get('features.favicon')) {
$favicon_path = $cache[$theme]->get('favicon.path');
if ($cache[$theme]->get('favicon.use_default')) {
if (file_exists($favicon = $theme_object->getPath() . '/favicon.ico')) {
$cache[$theme]->set('favicon.url', file_create_url($favicon));
}
else {
$cache[$theme]->set('favicon.url', file_create_url('core/misc/favicon.ico'));
}
}
elseif ($favicon_path) {
$cache[$theme]->set('favicon.url', file_create_url($favicon_path));
}
else {
$cache[$theme]->set('features.favicon', FALSE);
}
}
}
}
return $cache[$theme]->get($setting_name);
}
/**
* Converts theme settings to configuration.
*
* @see system_theme_settings_submit()
*
* @param array $theme_settings
* An array of theme settings from system setting form or a Drupal 7 variable.
* @param Config $config
* The configuration object to update.
*
* @return
* The Config object with updated data.
*/
function theme_settings_convert_to_config(array $theme_settings, Config $config) {
foreach ($theme_settings as $key => $value) {
if ($key == 'default_logo') {
$config->set('logo.use_default', $value);
}
else if ($key == 'logo_path') {
$config->set('logo.path', $value);
}
else if ($key == 'default_favicon') {
$config->set('favicon.use_default', $value);
}
else if ($key == 'favicon_path') {
$config->set('favicon.path', $value);
}
else if ($key == 'favicon_mimetype') {
$config->set('favicon.mimetype', $value);
}
else if (substr($key, 0, 7) == 'toggle_') {
$config->set('features.' . Unicode::substr($key, 7), $value);
}
else if (!in_array($key, array('theme', 'logo_upload'))) {
$config->set($key, $value);
}
}
return $config;
}
/**
* Prepares variables for time templates.
*
* Default template: time.html.twig.
*
* @param array $variables
* An associative array possibly containing:
* - attributes['timestamp']:
* - timestamp:
* - text:
*/
function template_preprocess_time(&$variables) {
// Format the 'datetime' attribute based on the timestamp.
// @see http://www.w3.org/TR/html5-author/the-time-element.html#attr-time-datetime
if (!isset($variables['attributes']['datetime']) && isset($variables['timestamp'])) {
$variables['attributes']['datetime'] = format_date($variables['timestamp'], 'html_datetime', '', 'UTC');
}
// If no text was provided, try to auto-generate it.
if (!isset($variables['text'])) {
// Format and use a human-readable version of the timestamp, if any.
if (isset($variables['timestamp'])) {
$variables['text'] = format_date($variables['timestamp']);
}
// Otherwise, use the literal datetime attribute.
elseif (isset($variables['attributes']['datetime'])) {
$variables['text'] = $variables['attributes']['datetime'];
}
}
}
/**
* Prepares variables for datetime form element templates.
*
* The datetime form element serves as a wrapper around the date element type,
* which creates a date and a time component for a date.
*
* Default template: datetime-form.html.twig.
*
* @param array $variables
* An associative array containing:
* - element: An associative array containing the properties of the element.
* Properties used: #title, #value, #options, #description, #required,
* #attributes.
*
* @see form_process_datetime()
*/
function template_preprocess_datetime_form(&$variables) {
$element = $variables['element'];
$variables['attributes'] = array();
if (isset($element['#id'])) {
$variables['attributes']['id'] = $element['#id'];
}
if (!empty($element['#attributes']['class'])) {
$variables['attributes']['class'] = (array) $element['#attributes']['class'];
}
$variables['content'] = $element;
}
/**
* Prepares variables for datetime form wrapper templates.
*
* Default template: datetime-wrapper.html.twig.
*
* @param array $variables
* An associative array containing:
* - element: An associative array containing the properties of the element.
* Properties used: #title, #children, #required, #attributes.
*/
function template_preprocess_datetime_wrapper(&$variables) {
$element = $variables['element'];
if (!empty($element['#title'])) {
$variables['title'] = $element['#title'];
}
// Display any error messages.
$variables['errors'] = NULL;
if (!empty($element['#errors']) && empty($element['#error_no_message'])) {
$variables['errors'] = $element['#errors'];
}
if (!empty($element['#description'])) {
$variables['description'] = $element['#description'];
}
$variables['required'] = FALSE;
// For required datetime fields 'form-required' & 'js-form-required' classes
// are appended to the label attributes.
if (!empty($element['#required'])) {
$variables['required'] = TRUE;
}
$variables['content'] = $element['#children'];
}
/**
* Prepares variables for links templates.
*
* Default template: links.html.twig.
*
* @param array $variables
* An associative array containing:
* - links: An associative array of links to be themed. The key for each link
* is used as its CSS class. Each link should be itself an array, with the
* following elements:
* - title: The link text.
* - url: (optional) The url object to link to. If omitted, no a tag is
* printed out.
* - attributes: (optional) Attributes for the anchor, or for the <span>
* tag used in its place if no 'href' is supplied. If element 'class' is
* included, it must be an array of one or more class names.
* If the 'href' element is supplied, the entire link array is passed to
* l() as its $options parameter.
* - attributes: A keyed array of attributes for the UL containing the
* list of links.
* - set_active_class: (optional) Whether each link should compare the
* route_name + route_parameters or href (path), language and query options
* to the current URL, to determine whether the link is "active". If so, an
* "active" class will be applied to the list item containing the link, as
* well as the link itself. It is important to use this sparingly since it
* is usually unnecessary and requires extra processing.
* For anonymous users, the "active" class will be calculated on the server,
* because most sites serve each anonymous user the same cached page anyway.
* For authenticated users, the "active" class will be calculated on the
* client (through JavaScript), only data- attributes are added to list
* items and contained links, to prevent breaking the render cache. The
* JavaScript is added in system_page_attachments().
* - heading: (optional) A heading to precede the links. May be an
* associative array or a string. If it's an array, it can have the
* following elements:
* - text: The heading text.
* - level: The heading level (e.g. 'h2', 'h3').
* - attributes: (optional) An array of the CSS attributes for the heading.
* When using a string it will be used as the text of the heading and the
* level will default to 'h2'. Headings should be used on navigation menus
* and any list of links that consistently appears on multiple pages. To
* make the heading invisible use the 'visually-hidden' CSS class. Do not
* use 'display:none', which removes it from screen readers and assistive
* technology. Headings allow screen reader and keyboard only users to
* navigate to or skip the links. See
* http://juicystudio.com/article/screen-readers-display-none.php and
* http://www.w3.org/TR/WCAG-TECHS/H42.html for more information.
*
* Unfortunately links templates duplicate the "active" class handling of l()
* and LinkGenerator::generate() because it needs to be able to set the "active"
* class not on the links themselves ("a" tags), but on the list items ("li"
* tags) that contain the links. This is necessary for CSS to be able to style
* list items differently when the link is active, since CSS does not yet allow
* one to style list items only if it contains a certain element with a certain
* class. I.e. we cannot yet convert this jQuery selector to a CSS selector:
* jQuery('li:has("a.is-active")')
*
* @see \Drupal\Core\Utility\LinkGenerator
* @see \Drupal\Core\Utility\LinkGenerator::generate()
* @see system_page_attachments()
*/
function template_preprocess_links(&$variables) {
$links = $variables['links'];
$heading = &$variables['heading'];
if (!empty($links)) {
// Prepend the heading to the list, if any.
if (!empty($heading)) {
// Convert a string heading into an array, using a H2 tag by default.
if (is_string($heading)) {
$heading = array('text' => $heading);
}
// Merge in default array properties into $heading.
$heading += array(
'level' => 'h2',
'attributes' => array(),
);
// Convert the attributes array into an Attribute object.
$heading['attributes'] = new Attribute($heading['attributes']);
}
$variables['links'] = array();
foreach ($links as $key => $link) {
$item = array();
$link += array(
'ajax' => NULL,
'url' => NULL,
);
$li_attributes = array();
$keys = ['title', 'url'];
$link_element = array(
'#type' => 'link',
'#title' => $link['title'],
'#options' => array_diff_key($link, array_combine($keys, $keys)),
'#url' => $link['url'],
'#ajax' => $link['ajax'],
);
// Handle links and ensure that the active class is added on the LIs, but
// only if the 'set_active_class' option is not empty.
if (isset($link['url'])) {
if (!empty($variables['set_active_class'])) {
// Also enable set_active_class for the contained link.
$link_element['#options']['set_active_class'] = TRUE;
if (!empty($link['language'])) {
$li_attributes['hreflang'] = $link['language']->getId();
}
// Add a "data-drupal-link-query" attribute to let the
// drupal.active-link library know the query in a standardized manner.
if (!empty($link['query'])) {
$query = $link['query'];
ksort($query);
$li_attributes['data-drupal-link-query'] = Json::encode($query);
}
/** @var \Drupal\Core\Url $url */
$url = $link['url'];
if ($url->isRouted()) {
// Add a "data-drupal-link-system-path" attribute to let the
// drupal.active-link library know the path in a standardized manner.
$system_path = $url->getInternalPath();
// @todo System path is deprecated - use the route name and parameters.
// Special case for the front page.
$li_attributes['data-drupal-link-system-path'] = $system_path == '' ? '<front>' : $system_path;
}
}
$item['link'] = $link_element;
}
// Handle title-only text items.
$item['text'] = $link['title'];
if (isset($link['attributes'])) {
$item['text_attributes'] = new Attribute($link['attributes']);
}
// Handle list item attributes.
$item['attributes'] = new Attribute($li_attributes);
// Add the item to the list of links.
$variables['links'][$key] = $item;
}
}
}
/**
* Prepares variables for image templates.
*
* Default template: image.html.twig.
*
* @param array $variables
* An associative array containing:
* - uri: Either the path of the image file (relative to base_path()) or a
* full URL.
* - width: The width of the image (if known).
* - height: The height of the image (if known).
* - alt: The alternative text for text-based browsers. HTML 4 and XHTML 1.0
* always require an alt attribute. The HTML 5 draft allows the alt
* attribute to be omitted in some cases. Therefore, this variable defaults
* to an empty string, but can be set to NULL for the attribute to be
* omitted. Usually, neither omission nor an empty string satisfies
* accessibility requirements, so it is strongly encouraged for code
* calling _theme('image') to pass a meaningful value for this variable.
* - http://www.w3.org/TR/REC-html40/struct/objects.html#h-13.8
* - http://www.w3.org/TR/xhtml1/dtds.html
* - http://dev.w3.org/html5/spec/Overview.html#alt
* - title: The title text is displayed when the image is hovered in some
* popular browsers.
* - attributes: Associative array of attributes to be placed in the img tag.
* - srcset: Array of multiple URIs and sizes/multipliers.
* - sizes: The sizes attribute for viewport-based selection of images.
* - http://www.whatwg.org/specs/web-apps/current-work/multipage/embedded-content.html#introduction-3:viewport-based-selection-2
*/
function template_preprocess_image(&$variables) {
if (!empty($variables['uri'])) {
$variables['attributes']['src'] = file_create_url($variables['uri']);
}
// Generate a srcset attribute conforming to the spec at
// http://www.w3.org/html/wg/drafts/html/master/embedded-content.html#attr-img-srcset
if (!empty($variables['srcset'])) {
$srcset = array();
foreach ($variables['srcset'] as $src) {
// URI is mandatory.
$source = file_create_url($src['uri']);
if (isset($src['width']) && !empty($src['width'])) {
$source .= ' ' . $src['width'];
}
elseif (isset($src['multiplier']) && !empty($src['multiplier'])) {
$source .= ' ' . $src['multiplier'];
}
$srcset[] = $source;
}
$variables['attributes']['srcset'] = implode(', ', $srcset);
}
foreach (array('width', 'height', 'alt', 'title', 'sizes') as $key) {
if (isset($variables[$key])) {
// If the property has already been defined in the attributes,
// do not override, including NULL.
if (array_key_exists($key, $variables['attributes'])) {
continue;
}
$variables['attributes'][$key] = $variables[$key];
}
}
}
/**
* Prepares variables for table templates.
*
* Default template: table.html.twig.
*
* @param array $variables
* An associative array containing:
* - header: An array containing the table headers. Each element of the array
* can be either a localized string or an associative array with the
* following keys:
* - data: The localized title of the table column, as a string or render
* array.
* - field: The database field represented in the table column (required
* if user is to be able to sort on this column).
* - sort: A default sort order for this column ("asc" or "desc"). Only
* one column should be given a default sort order because table sorting
* only applies to one column at a time.
* - class: An array of values for the 'class' attribute. In particular,
* the least important columns that can be hidden on narrow and medium
* width screens should have a 'priority-low' class, referenced with the
* RESPONSIVE_PRIORITY_LOW constant. Columns that should be shown on
* medium+ wide screens should be marked up with a class of
* 'priority-medium', referenced by with the RESPONSIVE_PRIORITY_MEDIUM
* constant. Themes may hide columns with one of these two classes on
* narrow viewports to save horizontal space.
* - Any HTML attributes, such as "colspan", to apply to the column header
* cell.
* - rows: An array of table rows. Every row is an array of cells, or an
* associative array with the following keys:
* - data: An array of cells.
* - Any HTML attributes, such as "class", to apply to the table row.
* - no_striping: A Boolean indicating that the row should receive no
* 'even / odd' styling. Defaults to FALSE.
* Each cell can be either a string or an associative array with the
* following keys:
* - data: The string or render array to display in the table cell.
* - header: Indicates this cell is a header.
* - Any HTML attributes, such as "colspan", to apply to the table cell.
* Here's an example for $rows:
* @code
* $rows = array(
* // Simple row
* array(
* 'Cell 1', 'Cell 2', 'Cell 3'
* ),
* // Row with attributes on the row and some of its cells.
* array(
* 'data' => array('Cell 1', array('data' => 'Cell 2', 'colspan' => 2)), 'class' => array('funky')
* ),
* );
* @endcode
* - footer: An array of table rows which will be printed within a <tfoot>
* tag, in the same format as the rows element (see above).
* - attributes: An array of HTML attributes to apply to the table tag.
* - caption: A localized string to use for the <caption> tag.
* - colgroups: An array of column groups. Each element of the array can be
* either:
* - An array of columns, each of which is an associative array of HTML
* attributes applied to the COL element.
* - An array of attributes applied to the COLGROUP element, which must
* include a "data" attribute. To add attributes to COL elements, set the
* "data" attribute with an array of columns, each of which is an
* associative array of HTML attributes.
* Here's an example for $colgroup:
* @code
* $colgroup = array(
* // COLGROUP with one COL element.
* array(
* array(
* 'class' => array('funky'), // Attribute for the COL element.
* ),
* ),
* // Colgroup with attributes and inner COL elements.
* array(
* 'data' => array(
* array(
* 'class' => array('funky'), // Attribute for the COL element.
* ),
* ),
* 'class' => array('jazzy'), // Attribute for the COLGROUP element.
* ),
* );
* @endcode
* These optional tags are used to group and set properties on columns
* within a table. For example, one may easily group three columns and
* apply same background style to all.
* - sticky: Use a "sticky" table header.
* - empty: The message to display in an extra row if table does not have any
* rows.
*/
function template_preprocess_table(&$variables) {
$is_sticky = !empty($variables['sticky']);
$is_responsive = !empty($variables['responsive']);
// Format the table columns:
if (!empty($variables['colgroups'])) {
foreach ($variables['colgroups'] as &$colgroup) {
// Check if we're dealing with a simple or complex column
if (isset($colgroup['data'])) {
$cols = $colgroup['data'];
unset($colgroup['data']);
$colgroup_attributes = $colgroup;
}
else {
$cols = $colgroup;
$colgroup_attributes = array();
}
$colgroup = array();
$colgroup['attributes'] = new Attribute($colgroup_attributes);
$colgroup['cols'] = array();
// Build columns.
if (is_array($cols) && !empty($cols)) {
foreach ($cols as $col_key => $col) {
$colgroup['cols'][$col_key]['attributes'] = new Attribute($col);
}
}
}
}
// Build an associative array of responsive classes keyed by column.
$responsive_classes = array();
// Format the table header:
$ts = array();
$header_columns = 0;
if (!empty($variables['header'])) {
$ts = tablesort_init($variables['header']);
// Use a separate index with responsive classes as headers
// may be associative.
$responsive_index = -1;
foreach ($variables['header'] as $col_key => $cell) {
// Increase the responsive index.
$responsive_index++;
if (!is_array($cell)) {
$header_columns++;
$cell_content = $cell;
$cell_attributes = new Attribute();
$is_header = TRUE;
}
else {
if (isset($cell['colspan'])) {
$header_columns += $cell['colspan'];
}
else {
$header_columns++;
}
$cell_content = '';
if (isset($cell['data'])) {
$cell_content = $cell['data'];
unset($cell['data']);
}
// Flag the cell as a header or not and remove the flag.
$is_header = isset($cell['header']) ? $cell['header'] : TRUE;
unset($cell['header']);
// Track responsive classes for each column as needed. Only the header
// cells for a column are marked up with the responsive classes by a
// module developer or themer. The responsive classes on the header cells
// must be transferred to the content cells.
if (!empty($cell['class']) && is_array($cell['class'])) {
if (in_array(RESPONSIVE_PRIORITY_MEDIUM, $cell['class'])) {
$responsive_classes[$responsive_index] = RESPONSIVE_PRIORITY_MEDIUM;
}
elseif (in_array(RESPONSIVE_PRIORITY_LOW, $cell['class'])) {
$responsive_classes[$responsive_index] = RESPONSIVE_PRIORITY_LOW;
}
}
tablesort_header($cell_content, $cell, $variables['header'], $ts);
// tablesort_header() removes the 'sort' and 'field' keys.
$cell_attributes = new Attribute($cell);
}
$variables['header'][$col_key] = array();
$variables['header'][$col_key]['tag'] = $is_header ? 'th' : 'td';
$variables['header'][$col_key]['attributes'] = $cell_attributes;
$variables['header'][$col_key]['content'] = $cell_content;
}
}
$variables['header_columns'] = $header_columns;
// Rows and footer have the same structure.
$sections = array('rows' , 'footer');
foreach ($sections as $section) {
if (!empty($variables[$section])) {
foreach ($variables[$section] as $row_key => $row) {
$cells = $row;
$row_attributes = array();
// Check if we're dealing with a simple or complex row
if (isset($row['data'])) {
$cells = $row['data'];
$variables['no_striping'] = isset($row['no_striping']) ? $row['no_striping'] : FALSE;
// Set the attributes array and exclude 'data' and 'no_striping'.
$row_attributes = $row;
unset($row_attributes['data']);
unset($row_attributes['no_striping']);
}
// Build row.
$variables[$section][$row_key] = array();
$variables[$section][$row_key]['attributes'] = new Attribute($row_attributes);
$variables[$section][$row_key]['cells'] = array();
if (!empty($cells)) {
// Reset the responsive index.
$responsive_index = -1;
foreach ($cells as $col_key => $cell) {
// Increase the responsive index.
$responsive_index++;
if (!is_array($cell)) {
$cell_content = $cell;
$cell_attributes = array();
$is_header = FALSE;
}
else {
$cell_content = '';
if (isset($cell['data'])) {
$cell_content = $cell['data'];
unset($cell['data']);
}
// Flag the cell as a header or not and remove the flag.
$is_header = !empty($cell['header']);
unset($cell['header']);
$cell_attributes = $cell;
}
// Active table sort information.
if (isset($variables['header'][$col_key]['data']) && $variables['header'][$col_key]['data'] == $ts['name'] && !empty($variables['header'][$col_key]['field'])) {
$variables[$section][$row_key]['cells'][$col_key]['active_table_sort'] = TRUE;
}
// Copy RESPONSIVE_PRIORITY_LOW/RESPONSIVE_PRIORITY_MEDIUM
// class from header to cell as needed.
if (isset($responsive_classes[$responsive_index])) {
$cell_attributes['class'][] = $responsive_classes[$responsive_index];
}
$variables[$section][$row_key]['cells'][$col_key]['tag'] = $is_header ? 'th' : 'td';
$variables[$section][$row_key]['cells'][$col_key]['attributes'] = new Attribute($cell_attributes);
$variables[$section][$row_key]['cells'][$col_key]['content'] = $cell_content;
}
}
}
}
}
if (empty($variables['no_striping'])) {
$variables['attributes']['data-striping'] = 1;
}
}
/**
* Prepares variables for tablesort indicator templates.
*
* Default template: tablesort-indicator.html.twig.
*
* @param array $variables
* An associative array containing:
* - style: Set to either 'asc' or 'desc'. This determines which icon to show.
*/
function template_preprocess_tablesort_indicator(&$variables) {
// Provide the image attributes for an ascending or descending image.
if ($variables['style'] == 'asc') {
$variables['arrow_asc'] = file_create_url('core/misc/arrow-asc.png');
}
else {
$variables['arrow_desc'] = file_create_url('core/misc/arrow-desc.png');
}
}
/**
* Prepares variables for item list templates.
*
* Default template: item-list.html.twig.
*
* @param array $variables
* An associative array containing:
* - items: An array of items to be displayed in the list. Each item can be
* either a string or a render array. If #type, #theme, or #markup
* properties are not specified for child render arrays, they will be
* inherited from the parent list, allowing callers to specify larger
* nested lists without having to explicitly specify and repeat the
* render properties for all nested child lists.
* - title: A title to be prepended to the list.
* - list_type: The type of list to return (e.g. "ul", "ol").
*
* @see https://www.drupal.org/node/1842756
*/
function template_preprocess_item_list(&$variables) {
foreach ($variables['items'] as &$item) {
$attributes = array();
// If the item value is an array, then it is a render array.
if (is_array($item)) {
// List items support attributes via the '#wrapper_attributes' property.
if (isset($item['#wrapper_attributes'])) {
$attributes = $item['#wrapper_attributes'];
}
// Determine whether there are any child elements in the item that are not
// fully-specified render arrays. If there are any, then the child
// elements present nested lists and we automatically inherit the render
// array properties of the current list to them.
foreach (Element::children($item) as $key) {
$child = &$item[$key];
// If this child element does not specify how it can be rendered, then
// we need to inherit the render properties of the current list.
if (!isset($child['#type']) && !isset($child['#theme']) && !isset($child['#markup'])) {
// Since item-list.html.twig supports both strings and render arrays
// as items, the items of the nested list may have been specified as
// the child elements of the nested list, instead of #items. For
// convenience, we automatically move them into #items.
if (!isset($child['#items'])) {
// This is the same condition as in
// \Drupal\Core\Render\Element::children(), which cannot be used
// here, since it triggers an error on string values.
foreach ($child as $child_key => $child_value) {
if ($child_key[0] !== '#') {
$child['#items'][$child_key] = $child_value;
unset($child[$child_key]);
}
}
}
// Lastly, inherit the original theme variables of the current list.
$child['#theme'] = $variables['theme_hook_original'];
$child['#list_type'] = $variables['list_type'];
}
}
}
// Set the item's value and attributes for the template.
$item = array(
'value' => $item,
'attributes' => new Attribute($attributes),
);
}
}
/**
* Returns HTML for an indentation div; used for drag and drop tables.
*
* @param $variables
* An associative array containing:
* - size: Optional. The number of indentations to create.
*
* @ingroup themeable
*/
function theme_indentation($variables) {
$output = '';
for ($n = 0; $n < $variables['size']; $n++) {
$output .= '<div class="js-indentation indentation"> </div>';
}
return $output;
}
/**
* Prepares variables for container templates.
*
* Default template: container.html.twig.
*
* @param array $variables
* An associative array containing:
* - element: An associative array containing the properties of the element.
* Properties used: #id, #attributes, #children.
*/
function template_preprocess_container(&$variables) {
$variables['has_parent'] = FALSE;
$element = $variables['element'];
// Ensure #attributes is set.
$element += array('#attributes' => array());
// Special handling for form elements.
if (isset($element['#array_parents'])) {
// Assign an html ID.
if (!isset($element['#attributes']['id'])) {
$element['#attributes']['id'] = $element['#id'];
}
$variables['has_parent'] = TRUE;
}
$variables['children'] = $element['#children'];
$variables['attributes'] = $element['#attributes'];
}
/**
* Prepares variables for maintenance task list templates.
*
* Default template: maintenance-task-list.html.twig.
*
* @param array $variables
* An associative array containing:
* - items: An associative array of maintenance tasks.
* It's the caller's responsibility to ensure this array's items contain no
* dangerous HTML such as SCRIPT tags.
* - active: The key for the currently active maintenance task.
*/
function template_preprocess_maintenance_task_list(&$variables) {
$items = $variables['items'];
$active = $variables['active'];
$done = isset($items[$active]) || $active == NULL;
foreach ($items as $k => $item) {
$variables['tasks'][$k]['item'] = $item;
$variables['tasks'][$k]['attributes'] = new Attribute();
if ($active == $k) {
$variables['tasks'][$k]['attributes']->addClass('is-active');
$variables['tasks'][$k]['status'] = t('active');
$done = FALSE;
}
else {
if ($done) {
$variables['tasks'][$k]['attributes']->addClass('done');
$variables['tasks'][$k]['status'] = t('done');
}
}
}
}
/**
* Adds a default set of helper variables for preprocessors and templates.
*
* This function is called for theme hooks implemented as templates only, not
* for theme hooks implemented as functions. This preprocess function is the
* first in the sequence of preprocessing functions that are called when
* preparing variables for a template.
*
* See the @link themeable Default theme implementations topic @endlink for
* details.
*/
function template_preprocess(&$variables, $hook, $info) {
// Merge in variables that don't depend on hook and don't change during a
// single page request.
// Use the advanced drupal_static() pattern, since this is called very often.
static $drupal_static_fast;
if (!isset($drupal_static_fast)) {
$drupal_static_fast['default_variables'] = &drupal_static(__FUNCTION__);
}
$default_variables = &$drupal_static_fast['default_variables'];
if (!isset($default_variables)) {
$default_variables = _template_preprocess_default_variables();
}
$variables += $default_variables;
// When theming a render element, merge its #attributes into
// $variables['attributes'].
if (isset($info['render element'])) {
$key = $info['render element'];
if (isset($variables[$key]['#attributes'])) {
$variables['attributes'] = NestedArray::mergeDeep($variables['attributes'], $variables[$key]['#attributes']);
}
}
}
/**
* Returns hook-independent variables to template_preprocess().
*/
function _template_preprocess_default_variables() {
// Variables that don't depend on a database connection.
$variables = array(
'attributes' => array(),
'title_attributes' => array(),
'content_attributes' => array(),
'title_prefix' => array(),
'title_suffix' => array(),
'db_is_active' => !defined('MAINTENANCE_MODE'),
'is_admin' => FALSE,
'logged_in' => FALSE,
);
// Give modules a chance to alter the default template variables.
\Drupal::moduleHandler()->alter('template_preprocess_default_variables', $variables);
// Tell all templates where they are located.
$variables['directory'] = \Drupal::theme()->getActiveTheme()->getPath();
return $variables;
}
/**
* Prepares variables for HTML document templates.
*
* Default template: html.html.twig.
*
* @param array $variables
* An associative array containing:
* - page: A render element representing the page.
*/
function template_preprocess_html(&$variables) {
$variables['page'] = $variables['html']['page'];
unset($variables['html']['page']);
$variables['page_top'] = NULL;
if (isset($variables['html']['page_top'])) {
$variables['page_top'] = $variables['html']['page_top'];
unset($variables['html']['page_top']);
}
$variables['page_bottom'] = NULL;
if (isset($variables['html']['page_bottom'])) {
$variables['page_bottom'] = $variables['html']['page_bottom'];
unset($variables['html']['page_bottom']);
}
$variables['html_attributes'] = new Attribute();
// HTML element attributes.
$language_interface = \Drupal::languageManager()->getCurrentLanguage();
$variables['html_attributes']['lang'] = $language_interface->getId();
$variables['html_attributes']['dir'] = $language_interface->getDirection();
if (isset($variables['db_is_active']) && !$variables['db_is_active']) {
$variables['db_offline'] = TRUE;
}
// Add a variable for the root path. This can be used to create a class and
// theme the page depending on the current path (e.g. node, admin, user) as
// well as more specific data like path-frontpage.
$is_front_page = \Drupal::service('path.matcher')->isFrontPage();
if ($is_front_page) {
$variables['root_path'] = FALSE;
}
else {
$system_path = \Drupal::service('path.current')->getPath();
$variables['root_path'] = explode('/', $system_path)[1];
}
$site_config = \Drupal::config('system.site');
// Construct page title.
if (isset($variables['page']['#title']) && is_array($variables['page']['#title'])) {
// Do an early render if the title is a render array.
$variables['page']['#title'] = (string) \Drupal::service('renderer')->render($variables['page']['#title']);
}
if (!empty($variables['page']['#title'])) {
$head_title = array(
// Marking the title as safe since it has had the tags stripped.
'title' => SafeString::create(trim(strip_tags($variables['page']['#title']))),
'name' => $site_config->get('name'),
);
}
// @todo Remove once views is not bypassing the view subscriber anymore.
// @see https://www.drupal.org/node/2068471
elseif ($is_front_page) {
$head_title = array(
'title' => t('Home'),
'name' => $site_config->get('name'),
);
}
else {
$head_title = ['name' => $site_config->get('name')];
if ($site_config->get('slogan')) {
$head_title['slogan'] = strip_tags($site_config->get('slogan'));
}
}
$variables['head_title'] = $head_title;
// @deprecated in Drupal 8.0.0, will be removed before Drupal 9.0.0.
$variables['head_title_array'] = $head_title;
// Create placeholder strings for these keys.
// @see \Drupal\Core\Render\HtmlResponseSubscriber
$types = [
'styles',
'scripts',
'scripts_bottom',
'head',
];
$token = Crypt::randomBytesBase64(55);
foreach ($types as $type) {
$placeholder = SafeMarkup::format('<drupal-html-response-attachment-placeholder type="@type" token="@token"></drupal-html-response-attachment-placeholder>', [
'@type' => $type,
'@token' => $token,
]);
$variables[$type]['#markup'] = $placeholder;
$variables[$type]['#attached']['html_response_attachment_placeholders'][$type] = $placeholder;
}
}
/**
* Prepares variables for the page template.
*
* Default template: page.html.twig.
*
* Most themes use their own copy of page.html.twig. The default is located
* inside "modules/system/page.html.twig". Look in there for the full list of
* variables.
*/
function template_preprocess_page(&$variables) {
$language_interface = \Drupal::languageManager()->getCurrentLanguage();
$site_config = \Drupal::config('system.site');
// Move some variables to the top level for themer convenience and template cleanliness.
$variables['title'] = $variables['page']['#title'];
foreach (\Drupal::theme()->getActiveTheme()->getRegions() as $region) {
if (!isset($variables['page'][$region])) {
$variables['page'][$region] = array();
}
}
$variables['base_path'] = base_path();
$variables['front_page'] = \Drupal::url('<front>');
$variables['language'] = $language_interface;
$variables['logo'] = theme_get_setting('logo.url');
$variables['site_name'] = (theme_get_setting('features.name') ? $site_config->get('name') : '');
$variables['site_slogan']['#markup'] = (theme_get_setting('features.slogan') ? $site_config->get('slogan') : '');
// An exception might be thrown.
try {
$variables['is_front'] = \Drupal::service('path.matcher')->isFrontPage();
}
catch (Exception $e) {
// If the database is not yet available, set default values for these
// variables.
$variables['is_front'] = FALSE;
$variables['db_is_active'] = FALSE;
}
if ($node = \Drupal::routeMatch()->getParameter('node')) {
$variables['node'] = $node;
}
}
/**
* Generate an array of suggestions from path arguments.
*
* This is typically called for adding to the suggestions in
* hook_theme_suggestions_HOOK_alter() or adding to 'attributes' class key
* variables from within preprocess functions, when wanting to base the
* additional suggestions or classes on the path of the current page.
*
* @param $args
* An array of path arguments.
* @param $base
* A string identifying the base 'thing' from which more specific suggestions
* are derived. For example, 'page' or 'html'.
* @param $delimiter
* The string used to delimit increasingly specific information. The default
* of '__' is appropriate for theme hook suggestions. '-' is appropriate for
* extra classes.
*
* @return
* An array of suggestions, suitable for adding to
* hook_theme_suggestions_HOOK_alter() or to $variables['attributes']['class']
* if the suggestions represent extra CSS classes.
*/
function theme_get_suggestions($args, $base, $delimiter = '__') {
// Build a list of suggested theme hooks in order of
// specificity. One suggestion is made for every element of the current path,
// though numeric elements are not carried to subsequent suggestions. For
// example, for $base='page', http://www.example.com/node/1/edit would result
// in the following suggestions:
//
// page__node
// page__node__%
// page__node__1
// page__node__edit
$suggestions = array();
$prefix = $base;
foreach ($args as $arg) {
// Remove slashes or null per SA-CORE-2009-003 and change - (hyphen) to _
// (underscore).
//
// When we discover templates in @see drupal_find_theme_templates,
// hyphens (-) are converted to underscores (_) before the theme hook
// is registered. We do this because the hyphens used for delimiters
// in hook suggestions cannot be used in the function names of the
// associated preprocess functions. Any page templates designed to be used
// on paths that contain a hyphen are also registered with these hyphens
// converted to underscores so here we must convert any hyphens in path
// arguments to underscores here before fetching theme hook suggestions
// to ensure the templates are appropriately recognized.
$arg = str_replace(array("/", "\\", "\0", '-'), array('', '', '', '_'), $arg);
// The percent acts as a wildcard for numeric arguments since
// asterisks are not valid filename characters on many filesystems.
if (is_numeric($arg)) {
$suggestions[] = $prefix . $delimiter . '%';
}
$suggestions[] = $prefix . $delimiter . $arg;
if (!is_numeric($arg)) {
$prefix .= $delimiter . $arg;
}
}
if (\Drupal::service('path.matcher')->isFrontPage()) {
// Front templates should be based on root only, not prefixed arguments.
$suggestions[] = $base . $delimiter . 'front';
}
return $suggestions;
}
/**
* Prepares variables for maintenance page templates.
*
* Default template: maintenance-page.html.twig.
*
* @param array $variables
* An associative array containing:
* - content - An array of page content.
*
* @see system_page_attachments()
*/
function template_preprocess_maintenance_page(&$variables) {
// @todo Rename the templates to page--maintenance + page--install.
template_preprocess_page($variables);
// @see system_page_attachments()
$variables['#attached']['library'][] = 'system/maintenance';
}
/**
* Prepares variables for install page templates.
*
* Default template: install-page.html.twig.
*
* @param array $variables
* An associative array containing:
* - content - An array of page content.
*
* @see template_preprocess_maintenance_page()
*/
function template_preprocess_install_page(&$variables) {
template_preprocess_maintenance_page($variables);
// Override the site name that is displayed on the page, since Drupal is
// still in the process of being installed.
$distribution_name = drupal_install_profile_distribution_name();
$variables['site_name'] = $distribution_name;
}
/**
* Prepares variables for region templates.
*
* Default template: region.html.twig.
*
* Prepares the values passed to the theme_region function to be passed into a
* pluggable template engine. Uses the region name to generate a template file
* suggestions.
*
* @param array $variables
* An associative array containing:
* - elements: An associative array containing properties of the region.
*/
function template_preprocess_region(&$variables) {
// Create the $content variable that templates expect.
$variables['content'] = $variables['elements']['#children'];
$variables['region'] = $variables['elements']['#region'];
}
/**
* Prepares variables for field templates.
*
* Default template: field.html.twig.
*
* @param array $variables
* An associative array containing:
* - element: A render element representing the field.
* - attributes: A string containing the attributes for the wrapping div.
* - title_attributes: A string containing the attributes for the title.
*/
function template_preprocess_field(&$variables, $hook) {
$element = $variables['element'];
// Creating variables for the template.
$variables['entity_type'] = $element['#entity_type'];
$variables['field_name'] = $element['#field_name'];
$variables['field_type'] = $element['#field_type'];
$variables['label_display'] = $element['#label_display'];
$variables['label_hidden'] = ($element['#label_display'] == 'hidden');
// Always set the field label - allow themes to decide whether to display it.
// In addition the label should be rendered but hidden to support screen
// readers.
$variables['label'] = $element['#title'];
// @todo Check for is_object() required due to pseudo field used in
// quickedit_test_entity_view_alter(). Remove this check after this is fixed
// in https://www.drupal.org/node/2550225.
$variables['multiple'] = is_object($element['#items']) ? $element['#items']->getFieldDefinition()->getFieldStorageDefinition()->isMultiple() : FALSE;
static $default_attributes;
if (!isset($default_attributes)) {
$default_attributes = new Attribute;
}
// Merge attributes when a single-value field has a hidden label.
if ($element['#label_display'] == 'hidden' && !$variables['multiple'] && is_object($element['#items'][0])) {
$variables['attributes'] = NestedArray::mergeDeep($variables['attributes'], (array) $element['#items'][0]->_attributes);
}
// We want other preprocess functions and the theme implementation to have
// fast access to the field item render arrays. The item render array keys
// (deltas) should always be numerically indexed starting from 0, and looping
// on those keys is faster than calling Element::children() or looping on all
// keys within $element, since that requires traversal of all element
// properties.
$variables['items'] = array();
$delta = 0;
while (!empty($element[$delta])) {
$variables['items'][$delta]['content'] = $element[$delta];
// Modules (e.g., rdf.module) can add field item attributes (to
// $item->_attributes) within hook_entity_prepare_view(). Some field
// formatters move those attributes into some nested formatter-specific
// element in order have them rendered on the desired HTML element (e.g., on
// the <a> element of a field item being rendered as a link). Other field
// formatters leave them within $element['#items'][$delta]['_attributes'] to
// be rendered on the item wrappers provided by field.html.twig.
$variables['items'][$delta]['attributes'] = !empty($element['#items'][$delta]->_attributes) ? new Attribute($element['#items'][$delta]->_attributes) : clone($default_attributes);
$delta++;
}
}
/**
* Prepares variables for individual form element templates.
*
* Default template: field-multiple-value-form.html.twig.
*
* Combines multiple values into a table with drag-n-drop reordering.
*
* @param array $variables
* An associative array containing:
* - element: A render element representing the form element.
*/
function template_preprocess_field_multiple_value_form(&$variables) {
$element = $variables['element'];
$variables['multiple'] = $element['#cardinality_multiple'];
if ($variables['multiple']) {
$table_id = Html::getUniqueId($element['#field_name'] . '_values');
$order_class = $element['#field_name'] . '-delta-order';
$header_attributes = new Attribute(array('class' => array('label')));
if (!empty($element['#required'])) {
$header_attributes['class'][] = 'js-form-required';
$header_attributes['class'][] = 'form-required';
}
$header = array(
array(
'data' => array(
'#prefix' => '<h4' . $header_attributes . '>',
'title' => array(
'#markup' => t($element['#title']),
),
'#suffix' => '</h4>',
),
'colspan' => 2,
'class' => array('field-label'),
),
t('Order', array(), array('context' => 'Sort order')),
);
$rows = array();
// Sort items according to '_weight' (needed when the form comes back after
// preview or failed validation).
$items = array();
$variables['button'] = array();
foreach (Element::children($element) as $key) {
if ($key === 'add_more') {
$variables['button'] = &$element[$key];
}
else {
$items[] = &$element[$key];
}
}
usort($items, '_field_multiple_value_form_sort_helper');
// Add the items as table rows.
foreach ($items as $item) {
$item['_weight']['#attributes']['class'] = array($order_class);
// Remove weight form element from item render array so it can be rendered
// in a separate table column.
$delta_element = $item['_weight'];
unset($item['_weight']);
$cells = array(
array('data' => '', 'class' => array('field-multiple-drag')),
array('data' => $item),
array('data' => $delta_element, 'class' => array('delta-order')),
);
$rows[] = array(
'data' => $cells,
'class' => array('draggable'),
);
}
$variables['table'] = array(
'#type' => 'table',
'#header' => $header,
'#rows' => $rows,
'#attributes' => array(
'id' => $table_id,
'class' => array('field-multiple-table'),
),
'#tabledrag' => array(
array(
'action' => 'order',
'relationship' => 'sibling',
'group' => $order_class,
),
),
);
$variables['description'] = $element['#description'];
}
else {
$variables['elements'] = array();
foreach (Element::children($element) as $key) {
$variables['elements'][] = $element[$key];
}
}
}
/**
* Prepares variables for breadcrumb templates.
*
* Default template: breadcrumb.html.twig.
*
* @param array $variables
* An associative array containing:
* - links: A list of \Drupal\Core\Link objects which should be rendered.
*/
function template_preprocess_breadcrumb(&$variables) {
$variables['breadcrumb'] = array();
/** @var \Drupal\Core\Link $link */
foreach ($variables['links'] as $key => $link) {
$variables['breadcrumb'][$key] = array('text' => $link->getText(), 'url' => $link->getUrl()->toString());
}
}
/**
* Callback for usort() within template_preprocess_field_multiple_value_form().
*
* Sorts using ['_weight']['#value']
*/
function _field_multiple_value_form_sort_helper($a, $b) {
$a_weight = (is_array($a) && isset($a['_weight']['#value']) ? $a['_weight']['#value'] : 0);
$b_weight = (is_array($b) && isset($b['_weight']['#value']) ? $b['_weight']['#value'] : 0);
return $a_weight - $b_weight;
}
/**
* Provides theme registration for themes across .inc files.
*/
function drupal_common_theme() {
return array(
// From theme.inc.
'html' => array(
'render element' => 'html',
),
'page' => array(
'render element' => 'page',
),
'region' => array(
'render element' => 'elements',
),
'time' => array(
'variables' => array('timestamp' => NULL, 'text' => NULL, 'attributes' => array()),
),
'datetime_form' => array(
'render element' => 'element',
),
'datetime_wrapper' => array(
'render element' => 'element',
),
'status_messages' => array(
'variables' => ['status_headings' => [], 'message_list' => NULL],
),
'links' => array(
'variables' => array('links' => array(), 'attributes' => array('class' => array('links')), 'heading' => array(), 'set_active_class' => FALSE),
),
'dropbutton_wrapper' => array(
'variables' => array('children' => NULL),
),
'image' => array(
// HTML 4 and XHTML 1.0 always require an alt attribute. The HTML 5 draft
// allows the alt attribute to be omitted in some cases. Therefore,
// default the alt attribute to an empty string, but allow code calling
// _theme('image') to pass explicit NULL for it to be omitted. Usually,
// neither omission nor an empty string satisfies accessibility
// requirements, so it is strongly encouraged for code calling
// _theme('image') to pass a meaningful value for the alt variable.
// - http://www.w3.org/TR/REC-html40/struct/objects.html#h-13.8
// - http://www.w3.org/TR/xhtml1/dtds.html
// - http://dev.w3.org/html5/spec/Overview.html#alt
// The title attribute is optional in all cases, so it is omitted by
// default.
'variables' => array('uri' => NULL, 'width' => NULL, 'height' => NULL, 'alt' => '', 'title' => NULL, 'attributes' => array(), 'sizes' => NULL, 'srcset' => array(), 'style_name' => NULL),
),
'breadcrumb' => array(
'variables' => array('links' => array()),
),
'table' => array(
'variables' => array('header' => NULL, 'rows' => NULL, 'footer' => NULL, 'attributes' => array(), 'caption' => NULL, 'colgroups' => array(), 'sticky' => FALSE, 'responsive' => TRUE, 'empty' => ''),
),
'tablesort_indicator' => array(
'variables' => array('style' => NULL),
),
'mark' => array(
'variables' => array('status' => MARK_NEW),
),
'item_list' => array(
'variables' => array('items' => array(), 'title' => '', 'list_type' => 'ul', 'attributes' => array(), 'empty' => NULL, 'context' => array()),
),
'feed_icon' => array(
'variables' => array('url' => NULL, 'title' => NULL),
),
'progress_bar' => array(
'variables' => array('label' => NULL, 'percent' => NULL, 'message' => NULL),
),
'indentation' => array(
'variables' => array('size' => 1),
'function' => 'theme_indentation',
),
// From theme.maintenance.inc.
'maintenance_page' => array(
'render element' => 'page',
),
'install_page' => array(
'render element' => 'page',
),
'maintenance_task_list' => array(
'variables' => array('items' => NULL, 'active' => NULL, 'variant' => NULL),
),
'authorize_report' => array(
'variables' => ['messages' => [], 'attributes' => []],
'includes' => ['core/includes/theme.maintenance.inc'],
'template' => 'authorize-report',
),
// From pager.inc.
'pager' => array(
'render element' => 'pager',
),
// From menu.inc.
'menu' => array(
'variables' => array('items' => array(), 'attributes' => array()),
),
'menu_local_task' => array(
'render element' => 'element',
),
'menu_local_action' => array(
'render element' => 'element',
),
'menu_local_tasks' => array(
'variables' => array('primary' => array(), 'secondary' => array()),
),
// From form.inc.
'input' => array(
'render element' => 'element',
),
'select' => array(
'render element' => 'element',
),
'fieldset' => array(
'render element' => 'element',
),
'details' => array(
'render element' => 'element',
),
'radios' => array(
'render element' => 'element',
),
'checkboxes' => array(
'render element' => 'element',
),
'form' => array(
'render element' => 'element',
),
'textarea' => array(
'render element' => 'element',
),
'form_element' => array(
'render element' => 'element',
),
'form_element_label' => array(
'render element' => 'element',
),
'vertical_tabs' => array(
'render element' => 'element',
),
'container' => array(
'render element' => 'element',
),
// From field system.
'field' => array(
'render element' => 'element',
),
'field_multiple_value_form' => array(
'render element' => 'element',
),
);
}