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Server : Apache System : Linux copper.netcy.com 2.6.32-754.27.1.el6.centos.plus.x86_64 #1 SMP Thu Jan 30 13:54:25 UTC 2020 x86_64 User : montcaro ( 581) PHP Version : 7.4.28 Disable Function : NONE Directory : /home/montcaro/public_html/includes/ |
<?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.
*/
/**
* @defgroup content_flags Content markers
* @{
* Markers used by theme_mark() and node_mark() to designate content.
* @see theme_mark(), node_mark()
*/
/**
* Mark content as read.
*/
define('MARK_READ', 0);
/**
* Mark content as being new.
*/
define('MARK_NEW', 1);
/**
* Mark content as being updated.
*/
define('MARK_UPDATED', 2);
/**
* @} End of "Content markers".
*/
/**
* Determines if a theme is available to use.
*
* @param $theme
* Either the name of a theme or a full theme object.
*
* @return
* Boolean TRUE if the theme is enabled or is the site administration theme;
* FALSE otherwise.
*/
function drupal_theme_access($theme) {
if (is_object($theme)) {
return _drupal_theme_access($theme);
}
else {
$themes = list_themes();
return isset($themes[$theme]) && _drupal_theme_access($themes[$theme]);
}
}
/**
* Helper function for determining access to a theme.
*
* @see drupal_theme_access()
*/
function _drupal_theme_access($theme) {
$admin_theme = variable_get('admin_theme');
return !empty($theme->status) || ($admin_theme && $theme->name == $admin_theme);
}
/**
* Initializes the theme system by loading the theme.
*/
function drupal_theme_initialize() {
global $theme, $user, $theme_key;
// If $theme is already set, assume the others are set, too, and do nothing
if (isset($theme)) {
return;
}
drupal_bootstrap(DRUPAL_BOOTSTRAP_DATABASE);
$themes = list_themes();
// Only select the user selected theme if it is available in the
// list of themes that can be accessed.
$theme = !empty($user->theme) && drupal_theme_access($user->theme) ? $user->theme : variable_get('theme_default', 'bartik');
// Allow modules to override the theme. Validation has already been performed
// inside menu_get_custom_theme(), so we do not need to check it again here.
$custom_theme = menu_get_custom_theme();
$theme = !empty($custom_theme) ? $custom_theme : $theme;
// Store the identifier for retrieving theme settings with.
$theme_key = $theme;
// Find all our ancestor themes and put them in an array.
$base_theme = array();
$ancestor = $theme;
while ($ancestor && isset($themes[$ancestor]->base_theme)) {
$ancestor = $themes[$ancestor]->base_theme;
$base_theme[] = $themes[$ancestor];
}
_drupal_theme_initialize($themes[$theme], array_reverse($base_theme));
// Themes can have alter functions, so reset the drupal_alter() cache.
drupal_static_reset('drupal_alter');
// Provide the page with information about the theme that's used, so that a
// later Ajax request can be rendered using the same theme.
// @see ajax_base_page_theme()
$setting['ajaxPageState'] = array(
'theme' => $theme_key,
'theme_token' => drupal_get_token($theme_key),
);
drupal_add_js($setting, 'setting');
}
/**
* Initializes the theme system given already loaded information.
*
* This function is useful to initialize a theme when no database is present.
*
* @param $theme
* An object with the following information:
* filename
* The .info file for this theme. The 'path' to
* the theme will be in this file's directory. (Required)
* owner
* The path to the .theme file or the .engine file to load for
* the theme. (Required)
* stylesheet
* The primary stylesheet for the theme. (Optional)
* engine
* The name of theme engine to use. (Optional)
* @param $base_theme
* An optional array of objects that represent the 'base theme' if the
* theme is meant to be derivative of another theme. It requires
* the same information as the $theme object. It should be in
* 'oldest first' order, meaning the top level of the chain will
* be first.
* @param $registry_callback
* The callback to invoke to set the theme registry.
*/
function _drupal_theme_initialize($theme, $base_theme = array(), $registry_callback = '_theme_load_registry') {
global $theme_info, $base_theme_info, $theme_engine, $theme_path;
$theme_info = $theme;
$base_theme_info = $base_theme;
$theme_path = dirname($theme->filename);
// Prepare stylesheets from this theme as well as all ancestor themes.
// We work it this way so that we can have child themes override parent
// theme stylesheets easily.
$final_stylesheets = array();
// Grab stylesheets from base theme
foreach ($base_theme as $base) {
if (!empty($base->stylesheets)) {
foreach ($base->stylesheets as $media => $stylesheets) {
foreach ($stylesheets as $name => $stylesheet) {
$final_stylesheets[$media][$name] = $stylesheet;
}
}
}
}
// Add stylesheets used by this theme.
if (!empty($theme->stylesheets)) {
foreach ($theme->stylesheets as $media => $stylesheets) {
foreach ($stylesheets as $name => $stylesheet) {
$final_stylesheets[$media][$name] = $stylesheet;
}
}
}
// And now add the stylesheets properly
foreach ($final_stylesheets as $media => $stylesheets) {
foreach ($stylesheets as $stylesheet) {
drupal_add_css($stylesheet, array('group' => CSS_THEME, 'every_page' => TRUE, 'media' => $media));
}
}
// Do basically the same as the above for scripts
$final_scripts = array();
// Grab scripts from base theme
foreach ($base_theme as $base) {
if (!empty($base->scripts)) {
foreach ($base->scripts as $name => $script) {
$final_scripts[$name] = $script;
}
}
}
// Add scripts used by this theme.
if (!empty($theme->scripts)) {
foreach ($theme->scripts as $name => $script) {
$final_scripts[$name] = $script;
}
}
// Add scripts used by this theme.
foreach ($final_scripts as $script) {
drupal_add_js($script, array('group' => JS_THEME, 'every_page' => TRUE));
}
$theme_engine = NULL;
// Initialize the theme.
if (isset($theme->engine)) {
// Include the engine.
include_once DRUPAL_ROOT . '/' . $theme->owner;
$theme_engine = $theme->engine;
if (function_exists($theme_engine . '_init')) {
foreach ($base_theme as $base) {
call_user_func($theme_engine . '_init', $base);
}
call_user_func($theme_engine . '_init', $theme);
}
}
else {
// include non-engine theme files
foreach ($base_theme as $base) {
// Include the theme file or the engine.
if (!empty($base->owner)) {
include_once DRUPAL_ROOT . '/' . $base->owner;
}
}
// and our theme gets one too.
if (!empty($theme->owner)) {
include_once DRUPAL_ROOT . '/' . $theme->owner;
}
}
if (isset($registry_callback)) {
_theme_registry_callback($registry_callback, array($theme, $base_theme, $theme_engine));
}
}
/**
* Gets the theme registry.
*
* @param $complete
* Optional boolean to indicate whether to return the complete theme registry
* array or an instance of the ThemeRegistry class. If TRUE, the complete
* theme registry array will be returned. This is useful if you want to
* foreach over the whole registry, use array_* functions or inspect it in a
* debugger. If FALSE, an instance of the ThemeRegistry class will be
* returned, this provides an ArrayObject which allows it to be accessed
* with array syntax and isset(), and should be more lightweight
* than the full registry. Defaults to TRUE.
*
* @return
* The complete theme registry array, or an instance of the ThemeRegistry
* class.
*/
function theme_get_registry($complete = TRUE) {
// Use the advanced drupal_static() pattern, since this is called very often.
static $drupal_static_fast;
if (!isset($drupal_static_fast)) {
$drupal_static_fast['registry'] = &drupal_static('theme_get_registry');
}
$theme_registry = &$drupal_static_fast['registry'];
// Initialize the theme, if this is called early in the bootstrap, or after
// static variables have been reset.
if (!is_array($theme_registry)) {
drupal_theme_initialize();
$theme_registry = array();
}
$key = (int) $complete;
if (!isset($theme_registry[$key])) {
list($callback, $arguments) = _theme_registry_callback();
if (!$complete) {
$arguments[] = FALSE;
}
$theme_registry[$key] = call_user_func_array($callback, $arguments);
}
return $theme_registry[$key];
}
/**
* Sets the callback that will be used by theme_get_registry().
*
* @param $callback
* The name of the callback function.
* @param $arguments
* The arguments to pass to the function.
*/
function _theme_registry_callback($callback = NULL, array $arguments = array()) {
static $stored;
if (isset($callback)) {
$stored = array($callback, $arguments);
}
return $stored;
}
/**
* Gets the theme_registry cache; if it doesn't exist, builds it.
*
* @param $theme
* The loaded $theme object as returned by list_themes().
* @param $base_theme
* An array of loaded $theme objects representing the ancestor themes in
* oldest first order.
* @param $theme_engine
* The name of the theme engine.
* @param $complete
* Whether to load the complete theme registry or an instance of the
* ThemeRegistry class.
*
* @return
* The theme registry array, or an instance of the ThemeRegistry class.
*/
function _theme_load_registry($theme, $base_theme = NULL, $theme_engine = NULL, $complete = TRUE) {
if ($complete) {
// Check the theme registry cache; if it exists, use it.
$cached = cache_get("theme_registry:$theme->name");
if (isset($cached->data)) {
$registry = $cached->data;
}
else {
// If not, build one and cache it.
$registry = _theme_build_registry($theme, $base_theme, $theme_engine);
// Only persist this registry if all modules are loaded. This assures a
// complete set of theme hooks.
if (module_load_all(NULL)) {
_theme_save_registry($theme, $registry);
}
}
return $registry;
}
else {
return new ThemeRegistry('theme_registry:runtime:' . $theme->name, 'cache');
}
}
/**
* Writes the theme_registry cache into the database.
*/
function _theme_save_registry($theme, $registry) {
cache_set("theme_registry:$theme->name", $registry);
}
/**
* 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_static_reset('theme_get_registry');
cache_clear_all('theme_registry', 'cache', TRUE);
}
/**
* Builds the run-time theme registry.
*
* Extends DrupalCacheArray to allow the theme registry to be accessed as a
* complete registry, while internally caching only the parts of the registry
* that are actually in use on the site. On cache misses the complete
* theme registry is loaded and used to update the run-time cache.
*/
class ThemeRegistry Extends DrupalCacheArray {
/**
* Whether the partial registry can be persisted to the cache.
*
* This is only allowed if all modules and the request method is GET. theme()
* should be very rarely called on POST requests and this avoids polluting
* the runtime cache.
*/
protected $persistable;
/**
* The complete theme registry array.
*/
protected $completeRegistry;
function __construct($cid, $bin) {
$this->cid = $cid;
$this->bin = $bin;
$this->persistable = module_load_all(NULL) && $_SERVER['REQUEST_METHOD'] == 'GET';
$data = array();
if ($this->persistable && $cached = cache_get($this->cid, $this->bin)) {
$data = $cached->data;
}
else {
// If there is no runtime cache stored, fetch the full theme registry,
// but then initialize each value to NULL. This allows offsetExists()
// to function correctly on non-registered theme hooks without triggering
// a call to resolveCacheMiss().
$data = $this->initializeRegistry();
if ($this->persistable) {
$this->set($data);
}
}
$this->storage = $data;
}
/**
* Initializes the full theme registry.
*
* @return
* An array with the keys of the full theme registry, but the values
* initialized to NULL.
*/
function initializeRegistry() {
$this->completeRegistry = theme_get_registry();
return array_fill_keys(array_keys($this->completeRegistry), NULL);
}
public function offsetExists($offset) {
// Since the theme registry allows for theme hooks to be requested that
// are not registered, just check the existence of the key in the registry.
// Use array_key_exists() here since a NULL value indicates that the theme
// hook exists but has not yet been requested.
return array_key_exists($offset, $this->storage);
}
public function offsetGet($offset) {
// If the offset is set but empty, it is a registered theme hook that has
// not yet been requested. Offsets that do not exist at all were not
// registered in hook_theme().
if (isset($this->storage[$offset])) {
return $this->storage[$offset];
}
elseif (array_key_exists($offset, $this->storage)) {
return $this->resolveCacheMiss($offset);
}
}
public function resolveCacheMiss($offset) {
if (!isset($this->completeRegistry)) {
$this->completeRegistry = theme_get_registry();
}
$this->storage[$offset] = $this->completeRegistry[$offset];
if ($this->persistable) {
$this->persist($offset);
}
return $this->storage[$offset];
}
public function set($data, $lock = TRUE) {
$lock_name = $this->cid . ':' . $this->bin;
if (!$lock || lock_acquire($lock_name)) {
if ($cached = cache_get($this->cid, $this->bin)) {
// Use array merge instead of union so that filled in values in $data
// overwrite empty values in the current cache.
$data = array_merge($cached->data, $data);
}
else {
$registry = $this->initializeRegistry();
$data = array_merge($registry, $data);
}
cache_set($this->cid, $data, $this->bin);
if ($lock) {
lock_release($lock_name);
}
}
}
}
/**
* Process a single implementation of hook_theme().
*
* @param $cache
* The theme registry that will eventually be cached; It is an associative
* array keyed by theme hooks, whose values are associative arrays describing
* the hook:
* - 'type': The passed-in $type.
* - 'theme path': The passed-in $path.
* - 'function': The name of the function generating output for this theme
* hook. Either defined explicitly in hook_theme() or, if neither 'function'
* nor 'template' is defined, then the default theme function name is used.
* The default theme function name is the theme hook prefixed by either
* 'theme_' for modules or '$name_' for everything else. If 'function' is
* defined, 'template' is not used.
* - 'template': The filename of the template generating output for this
* theme hook. The template is in the directory defined by the 'path' key of
* hook_theme() or defaults to $path.
* - 'variables': The variables for this theme hook as defined in
* hook_theme(). If there is more than one implementation and 'variables' is
* not specified in a later one, then the previous definition is kept.
* - 'render element': The renderable element for this theme hook as defined
* in hook_theme(). If there is more than one implementation and
* 'render element' is not specified in a later one, then the previous
* definition is kept.
* - 'preprocess functions': See theme() for detailed documentation.
* - 'process functions': See theme() for detailed documentation.
* @param $name
* The name of the module, theme engine, base theme engine, theme or base
* theme implementing hook_theme().
* @param $type
* One of 'module', 'theme_engine', 'base_theme_engine', 'theme', or
* 'base_theme'. Unlike regular hooks that can only be implemented by modules,
* each of these can implement hook_theme(). _theme_process_registry() is
* called in aforementioned order and new entries override older ones. For
* example, if a theme hook is both defined by a module and a theme, then the
* definition in the theme will be used.
* @param $theme
* The loaded $theme object as returned from list_themes().
* @param $path
* The directory where $name is. For example, modules/system or
* themes/bartik.
*
* @see theme()
* @see _theme_build_registry()
* @see hook_theme()
* @see list_themes()
*/
function _theme_process_registry(&$cache, $name, $type, $theme, $path) {
$result = array();
// Processor functions work in two distinct phases with the process
// functions always being executed after the preprocess functions.
$variable_process_phases = array(
'preprocess functions' => 'preprocess',
'process functions' => 'process',
);
$hook_defaults = array(
'variables' => TRUE,
'render element' => TRUE,
'pattern' => TRUE,
'base hook' => TRUE,
);
// Invoke the hook_theme() implementation, process what is returned, and
// merge it into $cache.
$function = $name . '_theme';
if (function_exists($function)) {
$result = $function($cache, $type, $theme, $path);
foreach ($result as $hook => $info) {
// When a theme or engine overrides a module's theme function
// $result[$hook] will only contain key/value pairs for information being
// overridden. Pull the rest of the information from what was defined by
// an earlier hook.
// Fill in the type and path of the module, theme, or engine that
// implements this theme function.
$result[$hook]['type'] = $type;
$result[$hook]['theme path'] = $path;
// If function and file are omitted, default to standard naming
// conventions.
if (!isset($info['template']) && !isset($info['function'])) {
$result[$hook]['function'] = ($type == 'module' ? 'theme_' : $name . '_') . $hook;
}
if (isset($cache[$hook]['includes'])) {
$result[$hook]['includes'] = $cache[$hook]['includes'];
}
// If the theme implementation defines a file, then also use the path
// that it defined. Otherwise use the default path. This allows
// system.module to declare theme functions on behalf of core .include
// files.
if (isset($info['file'])) {
$include_file = isset($info['path']) ? $info['path'] : $path;
$include_file .= '/' . $info['file'];
include_once DRUPAL_ROOT . '/' . $include_file;
$result[$hook]['includes'][] = $include_file;
}
// If the default keys are not set, use the default values registered
// by the module.
if (isset($cache[$hook])) {
$result[$hook] += array_intersect_key($cache[$hook], $hook_defaults);
}
// The following apply only to theming hooks implemented as templates.
if (isset($info['template'])) {
// Prepend the current theming path when none is set.
if (!isset($info['path'])) {
$result[$hook]['template'] = $path . '/' . $info['template'];
}
}
// Allow variable processors for all theming hooks, whether the hook is
// implemented as a template or as a function.
foreach ($variable_process_phases as $phase_key => $phase) {
// Check for existing variable processors. Ensure arrayness.
if (!isset($info[$phase_key]) || !is_array($info[$phase_key])) {
$info[$phase_key] = array();
$prefixes = array();
if ($type == 'module') {
// Default variable processor prefix.
$prefixes[] = 'template';
// Add all modules so they can intervene with their own variable
// processors. This allows them to provide variable processors even
// if they are not the owner of the current hook.
$prefixes += module_list();
}
elseif ($type == 'theme_engine' || $type == 'base_theme_engine') {
// Theme engines get an extra set that come before the normally
// named variable processors.
$prefixes[] = $name . '_engine';
// The theme engine registers on behalf of the theme using the
// theme's name.
$prefixes[] = $theme;
}
else {
// This applies when the theme manually registers their own variable
// processors.
$prefixes[] = $name;
}
foreach ($prefixes as $prefix) {
// Only use non-hook-specific variable processors for theming hooks
// implemented as templates. See theme().
if (isset($info['template']) && function_exists($prefix . '_' . $phase)) {
$info[$phase_key][] = $prefix . '_' . $phase;
}
if (function_exists($prefix . '_' . $phase . '_' . $hook)) {
$info[$phase_key][] = $prefix . '_' . $phase . '_' . $hook;
}
}
}
// Check for the override flag and prevent the cached variable
// processors from being used. This allows themes or theme engines to
// remove variable processors set earlier in the registry build.
if (!empty($info['override ' . $phase_key])) {
// Flag not needed inside the registry.
unset($result[$hook]['override ' . $phase_key]);
}
elseif (isset($cache[$hook][$phase_key]) && is_array($cache[$hook][$phase_key])) {
$info[$phase_key] = array_merge($cache[$hook][$phase_key], $info[$phase_key]);
}
$result[$hook][$phase_key] = $info[$phase_key];
}
}
// Merge the newly created theme hooks into the existing cache.
$cache = $result + $cache;
}
// Let themes have variable processors even if they didn't register a
// template.
if ($type == 'theme' || $type == 'base_theme') {
foreach ($cache as $hook => $info) {
// Check only if not registered by the theme or engine.
if (empty($result[$hook])) {
foreach ($variable_process_phases as $phase_key => $phase) {
if (!isset($info[$phase_key])) {
$cache[$hook][$phase_key] = array();
}
// Only use non-hook-specific variable processors for theming hooks
// implemented as templates. See theme().
if (isset($info['template']) && function_exists($name . '_' . $phase)) {
$cache[$hook][$phase_key][] = $name . '_' . $phase;
}
if (function_exists($name . '_' . $phase . '_' . $hook)) {
$cache[$hook][$phase_key][] = $name . '_' . $phase . '_' . $hook;
$cache[$hook]['theme path'] = $path;
}
// Ensure uniqueness.
$cache[$hook][$phase_key] = array_unique($cache[$hook][$phase_key]);
}
}
}
}
}
/**
* Builds the theme registry cache.
*
* @param $theme
* The loaded $theme object as returned by list_themes().
* @param $base_theme
* An array of loaded $theme objects representing the ancestor themes in
* oldest first order.
* @param $theme_engine
* The name of the theme engine.
*/
function _theme_build_registry($theme, $base_theme, $theme_engine) {
$cache = array();
// First, process the theme hooks advertised by modules. This will
// serve as the basic registry. Since the list of enabled modules is the same
// regardless of the theme used, this is cached in its own entry to save
// building it for every theme.
if ($cached = cache_get('theme_registry:build:modules')) {
$cache = $cached->data;
}
else {
foreach (module_implements('theme') as $module) {
_theme_process_registry($cache, $module, 'module', $module, drupal_get_path('module', $module));
}
// Only cache this registry if all modules are loaded.
if (module_load_all(NULL)) {
cache_set('theme_registry:build:modules', $cache);
}
}
// Process each base theme.
foreach ($base_theme as $base) {
// If the base theme uses a theme engine, process its hooks.
$base_path = dirname($base->filename);
if ($theme_engine) {
_theme_process_registry($cache, $theme_engine, 'base_theme_engine', $base->name, $base_path);
}
_theme_process_registry($cache, $base->name, 'base_theme', $base->name, $base_path);
}
// And then the same thing, but for the theme.
if ($theme_engine) {
_theme_process_registry($cache, $theme_engine, 'theme_engine', $theme->name, dirname($theme->filename));
}
// Finally, hooks provided by the theme itself.
_theme_process_registry($cache, $theme->name, 'theme', $theme->name, dirname($theme->filename));
// Let modules alter the registry.
drupal_alter('theme_registry', $cache);
// Optimize the registry to not have empty arrays for functions.
foreach ($cache as $hook => $info) {
foreach (array('preprocess functions', 'process functions') as $phase) {
if (empty($info[$phase])) {
unset($cache[$hook][$phase]);
}
}
}
return $cache;
}
/**
* Returns a list of all currently available themes.
*
* Retrieved from the database, if available and the site is not in maintenance
* mode; otherwise compiled freshly from the filesystem.
*
* @param $refresh
* Whether to reload the list of themes from the database. Defaults to FALSE.
*
* @return
* An associative array of the currently available themes. The keys are the
* themes' machine names and the values are objects having the following
* properties:
* - filename: The filepath and name of the .info file.
* - name: The machine name of the theme.
* - status: 1 for enabled, 0 for disabled themes.
* - info: The contents of the .info file.
* - stylesheets: A two dimensional array, using the first key for the
* media attribute (e.g. 'all'), the second for the name of the file
* (e.g. style.css). The value is a complete filepath (e.g.
* themes/bartik/style.css). Not set if no stylesheets are defined in the
* .info file.
* - scripts: An associative array of JavaScripts, using the filename as key
* and the complete filepath as value. Not set if no scripts are defined in
* the .info file.
* - prefix: The base theme engine prefix.
* - engine: The machine name of the theme engine.
* - base_theme: If this is a sub-theme, the machine name of the base theme
* defined in the .info file. Otherwise, the element is not set.
* - base_themes: If this is a sub-theme, an associative array of the
* base-theme ancestors of this theme, starting with this theme's base
* theme, then the base theme's own base theme, etc. Each entry has an
* array key equal to the theme's machine name, and a value equal to the
* human-readable theme name; if a theme with matching machine name does
* not exist in the system, the value will instead be NULL (and since the
* system would not know whether that theme itself has a base theme, that
* will end the array of base themes). This is not set if the theme is not
* a sub-theme.
* - sub_themes: An associative array of themes on the system that are
* either direct sub-themes (that is, they declare this theme to be
* their base theme), direct sub-themes of sub-themes, etc. The keys are
* the themes' machine names, and the values are the themes' human-readable
* names. This element is not set if there are no themes on the system that
* declare this theme as their base theme.
*/
function list_themes($refresh = FALSE) {
$list = &drupal_static(__FUNCTION__, array());
if ($refresh) {
$list = array();
system_list_reset();
}
if (empty($list)) {
$list = array();
$themes = array();
// Extract from the database only when it is available.
// Also check that the site is not in the middle of an install or update.
if (!defined('MAINTENANCE_MODE')) {
try {
$themes = system_list('theme');
}
catch (Exception $e) {
// If the database is not available, rebuild the theme data.
$themes = _system_rebuild_theme_data();
}
}
else {
// Scan the installation when the database should not be read.
$themes = _system_rebuild_theme_data();
}
foreach ($themes as $theme) {
foreach ($theme->info['stylesheets'] as $media => $stylesheets) {
foreach ($stylesheets as $stylesheet => $path) {
$theme->stylesheets[$media][$stylesheet] = $path;
}
}
foreach ($theme->info['scripts'] as $script => $path) {
$theme->scripts[$script] = $path;
}
if (isset($theme->info['engine'])) {
$theme->engine = $theme->info['engine'];
}
if (isset($theme->info['base theme'])) {
$theme->base_theme = $theme->info['base theme'];
}
// Status is normally retrieved from the database. Add zero values when
// read from the installation directory to prevent notices.
if (!isset($theme->status)) {
$theme->status = 0;
}
$list[$theme->name] = $theme;
}
}
return $list;
}
/**
* Find all the base themes for the specified theme.
*
* Themes can inherit templates and function implementations from earlier themes.
*
* @param $themes
* An array of available themes.
* @param $key
* The name of the theme whose base we are looking for.
* @param $used_keys
* A recursion parameter preventing endless loops.
* @return
* Returns an array of all of the theme's ancestors; the first element's value
* will be NULL if an error occurred.
*/
function drupal_find_base_themes($themes, $key, $used_keys = array()) {
$base_key = $themes[$key]->info['base theme'];
// Does the base theme exist?
if (!isset($themes[$base_key])) {
return array($base_key => NULL);
}
$current_base_theme = array($base_key => $themes[$base_key]->info['name']);
// Is the base theme itself a child of another theme?
if (isset($themes[$base_key]->info['base theme'])) {
// Do we already know the base themes of this theme?
if (isset($themes[$base_key]->base_themes)) {
return $themes[$base_key]->base_themes + $current_base_theme;
}
// Prevent loops.
if (!empty($used_keys[$base_key])) {
return array($base_key => NULL);
}
$used_keys[$base_key] = TRUE;
return drupal_find_base_themes($themes, $base_key, $used_keys) + $current_base_theme;
}
// If we get here, then this is our parent theme.
return $current_base_theme;
}
/**
* Generates themed output.
*
* All requests for themed output must go through this function (however,
* calling the theme() function directly is strongly discouraged - see next
* paragraph). It examines the request and routes it to the appropriate
* @link themeable theme function or template @endlink, by checking the theme
* registry.
*
* Avoid calling this function directly. It is preferable to replace direct
* calls to the theme() function with calls to drupal_render() by passing a
* render array with a #theme key to drupal_render(), which in turn calls
* theme().
*
* @section sec_theme_hooks Theme Hooks
* Most commonly, the first argument to this function is the name of the theme
* hook. For instance, to theme a taxonomy term, the theme hook name is
* 'taxonomy_term'. Modules register theme hooks within a hook_theme()
* implementation and provide a default implementation via a function named
* theme_HOOK() (e.g., theme_taxonomy_term()) or via a template file named
* according to the value of the 'template' key registered with the theme hook
* (see hook_theme() for details). Default templates are implemented with the
* PHPTemplate rendering engine and are named the same as the theme hook, with
* underscores changed to hyphens, so for the 'taxonomy_term' theme hook, the
* default template is 'taxonomy-term.tpl.php'.
*
* @subsection sub_overriding_theme_hooks Overriding Theme Hooks
* Themes may also register new theme hooks within a hook_theme()
* implementation, but it is more common for themes to override default
* implementations provided by modules than to register entirely new theme
* hooks. Themes can override a default implementation by implementing a
* function named THEME_HOOK() (for example, the 'bartik' theme overrides the
* default implementation of the 'menu_tree' theme hook by implementing a
* bartik_menu_tree() function), or by adding a template file within its folder
* structure that follows the template naming structure used by the theme's
* rendering engine (for example, since the Bartik theme uses the PHPTemplate
* rendering engine, it overrides the default implementation of the 'page' theme
* hook by containing a 'page.tpl.php' file within its folder structure).
*
* @subsection sub_preprocess_templates Preprocessing for Template Files
* If the implementation is a template file, several functions are called
* before the template file is invoked, to modify the $variables array. These
* fall into the "preprocessing" phase and the "processing" phase, and are
* executed (if they exist), in the following order (note that in the following
* list, HOOK indicates the theme hook name, MODULE indicates a module name,
* THEME indicates a theme name, and ENGINE indicates a theme engine name):
* - template_preprocess(&$variables, $hook): Creates a default set of
* variables for all theme hooks with template implementations.
* - template_preprocess_HOOK(&$variables): Should be implemented by the module
* that registers the theme hook, to set up default variables.
* - MODULE_preprocess(&$variables, $hook): hook_preprocess() is invoked on all
* implementing modules.
* - MODULE_preprocess_HOOK(&$variables): hook_preprocess_HOOK() is invoked on
* all implementing modules, so that modules that didn't define the theme
* hook can alter the variables.
* - ENGINE_engine_preprocess(&$variables, $hook): Allows the theme engine to
* set necessary variables for all theme hooks with template implementations.
* - ENGINE_engine_preprocess_HOOK(&$variables): Allows the theme engine to set
* necessary variables for the particular theme hook.
* - THEME_preprocess(&$variables, $hook): Allows the theme to set necessary
* variables for all theme hooks with template implementations.
* - THEME_preprocess_HOOK(&$variables): Allows the theme to set necessary
* variables specific to the particular theme hook.
* - template_process(&$variables, $hook): Creates an additional set of default
* variables for all theme hooks with template implementations. The variables
* created in this function are derived from ones created by
* template_preprocess(), but potentially altered by the other preprocess
* functions listed above. For example, any preprocess function can add to or
* modify the $variables['attributes_array'] variable, and after all of them
* have finished executing, template_process() flattens it into a
* $variables['attributes'] string for convenient use by templates.
* - template_process_HOOK(&$variables): Should be implemented by the module
* that registers the theme hook, if it needs to perform additional variable
* processing after all preprocess functions have finished.
* - MODULE_process(&$variables, $hook): hook_process() is invoked on all
* implementing modules.
* - MODULE_process_HOOK(&$variables): hook_process_HOOK() is invoked on
* on all implementing modules, so that modules that didn't define the theme
* hook can alter the variables.
* - ENGINE_engine_process(&$variables, $hook): Allows the theme engine to
* process variables for all theme hooks with template implementations.
* - ENGINE_engine_process_HOOK(&$variables): Allows the theme engine to process
* the variables specific to the theme hook.
* - THEME_process(&$variables, $hook): Allows the theme to process the
* variables for all theme hooks with template implementations.
* - THEME_process_HOOK(&$variables): Allows the theme to process the
* variables specific to the theme hook.
*
* @subsection sub_preprocess_theme_funcs Preprocessing for Theme Functions
* If the implementation is a function, only the theme-hook-specific preprocess
* and process functions (the ones ending in _HOOK) are called from the
* list above. This is because theme hooks with function implementations
* need to be fast, and calling the non-theme-hook-specific preprocess and
* process functions for them would incur a noticeable performance penalty.
*
* @subsection sub_alternate_suggestions Suggesting Alternate Hooks
* There are two special variables that these preprocess and process functions
* can set: 'theme_hook_suggestion' and 'theme_hook_suggestions'. These will be
* merged together to form a list of 'suggested' alternate theme hooks to use,
* in reverse order of priority. theme_hook_suggestion will always be a higher
* priority than items in theme_hook_suggestions. theme() will use the
* highest priority implementation that exists. If none exists, theme() will
* use the implementation for the theme hook it was called with. These
* suggestions are similar to and are used for similar reasons as calling
* theme() with an array as the $hook parameter (see below). The difference
* is whether the suggestions are determined by the code that calls theme() or
* by a preprocess or process function.
*
* @param $hook
* The name of the theme hook to call. If the name contains a
* double-underscore ('__') and there isn't an implementation for the full
* name, the part before the '__' is checked. This allows a fallback to a
* more generic implementation. For example, if theme('links__node', ...) is
* called, but there is no implementation of that theme hook, then the
* 'links' implementation is used. This process is iterative, so if
* theme('links__contextual__node', ...) is called, theme() checks for the
* following implementations, and uses the first one that exists:
* - links__contextual__node
* - links__contextual
* - links
* This allows themes to create specific theme implementations for named
* objects and contexts of otherwise generic theme hooks. The $hook parameter
* may also be an array, in which case the first theme hook that has an
* implementation is used. This allows for the code that calls theme() to
* explicitly specify the fallback order in a situation where using the '__'
* convention is not desired or is insufficient.
* @param $variables
* An associative array of variables to merge with defaults from the theme
* registry, pass to preprocess and process functions for modification, and
* finally, pass to the function or template implementing the theme hook.
* Alternatively, this can be a renderable array, in which case, its
* properties are mapped to variables expected by the theme hook
* implementations.
*
* @return
* An HTML string representing the themed output.
*
* @see drupal_render()
* @see themeable
* @see hook_theme()
* @see template_preprocess()
* @see template_process()
*/
function theme($hook, $variables = array()) {
// If called before all modules are loaded, we do not necessarily have a full
// theme registry to work with, and therefore cannot process the theme
// request properly. See also _theme_load_registry().
if (!module_load_all(NULL) && !defined('MAINTENANCE_MODE')) {
throw new Exception(t('theme() may not be called until all modules are loaded.'));
}
$hooks = theme_get_registry(FALSE);
// If an array of hook candidates were passed, use the first one that has an
// implementation.
if (is_array($hook)) {
foreach ($hook as $candidate) {
if (isset($hooks[$candidate])) {
break;
}
}
$hook = $candidate;
}
$theme_hook_original = $hook;
// If there's no implementation, check for more generic fallbacks. If there's
// still no implementation, log an error and return an empty string.
if (!isset($hooks[$hook])) {
// Iteratively strip everything after the last '__' delimiter, until an
// implementation is found.
while ($pos = strrpos($hook, '__')) {
$hook = substr($hook, 0, $pos);
if (isset($hooks[$hook])) {
break;
}
}
if (!isset($hooks[$hook])) {
// Only log a message when not trying theme suggestions ($hook being an
// array).
if (!isset($candidate)) {
watchdog('theme', 'Theme hook %hook not found.', array('%hook' => $hook), WATCHDOG_WARNING);
}
return '';
}
}
$info = $hooks[$hook];
global $theme_path;
$temp = $theme_path;
// point path_to_theme() to the currently used theme path:
$theme_path = $info['theme path'];
// Include a file if the theme function or variable processor is held
// elsewhere.
if (!empty($info['includes'])) {
foreach ($info['includes'] as $include_file) {
include_once DRUPAL_ROOT . '/' . $include_file;
}
}
// If a renderable array is passed as $variables, then set $variables to
// the arguments expected by the theme function.
if (isset($variables['#theme']) || isset($variables['#theme_wrappers'])) {
$element = $variables;
$variables = array();
if (isset($info['variables'])) {
foreach (array_keys($info['variables']) as $name) {
if (isset($element["#$name"])) {
$variables[$name] = $element["#$name"];
}
}
}
else {
$variables[$info['render element']] = $element;
}
}
// Merge in argument defaults.
if (!empty($info['variables'])) {
$variables += $info['variables'];
}
elseif (!empty($info['render element'])) {
$variables += array($info['render element'] => array());
}
$variables['theme_hook_original'] = $theme_hook_original;
// Invoke the variable processors, if any. The processors may specify
// alternate suggestions for which hook's template/function to use. If the
// hook is a suggestion of a base hook, invoke the variable processors of
// the base hook, but retain the suggestion as a high priority suggestion to
// be used unless overridden by a variable processor function.
if (isset($info['base hook'])) {
$base_hook = $info['base hook'];
$base_hook_info = $hooks[$base_hook];
// Include files required by the base hook, since its variable processors
// might reside there.
if (!empty($base_hook_info['includes'])) {
foreach ($base_hook_info['includes'] as $include_file) {
include_once DRUPAL_ROOT . '/' . $include_file;
}
}
if (isset($base_hook_info['preprocess functions']) || isset($base_hook_info['process functions'])) {
$variables['theme_hook_suggestion'] = $hook;
$hook = $base_hook;
$info = $base_hook_info;
}
}
if (isset($info['preprocess functions']) || isset($info['process functions'])) {
$variables['theme_hook_suggestions'] = array();
foreach (array('preprocess functions', 'process functions') as $phase) {
if (!empty($info[$phase])) {
foreach ($info[$phase] as $processor_function) {
if (function_exists($processor_function)) {
// We don't want a poorly behaved process function changing $hook.
$hook_clone = $hook;
$processor_function($variables, $hook_clone);
}
}
}
}
// If the preprocess/process functions specified hook suggestions, and the
// suggestion exists in the theme registry, use it instead of the hook that
// theme() was called with. This allows the preprocess/process step to
// route to a more specific theme hook. For example, a function may call
// theme('node', ...), but a preprocess function can add 'node__article' as
// a suggestion, enabling a theme to have an alternate template file for
// article nodes. Suggestions are checked in the following order:
// - The 'theme_hook_suggestion' variable is checked first. It overrides
// all others.
// - The 'theme_hook_suggestions' variable is checked in FILO order, so the
// last suggestion added to the array takes precedence over suggestions
// added earlier.
$suggestions = array();
if (!empty($variables['theme_hook_suggestions'])) {
$suggestions = $variables['theme_hook_suggestions'];
}
if (!empty($variables['theme_hook_suggestion'])) {
$suggestions[] = $variables['theme_hook_suggestion'];
}
foreach (array_reverse($suggestions) as $suggestion) {
if (isset($hooks[$suggestion])) {
$info = $hooks[$suggestion];
break;
}
}
}
// Generate the output using either a function or a template.
$output = '';
if (isset($info['function'])) {
if (function_exists($info['function'])) {
$output = $info['function']($variables);
}
}
else {
// Default render function and extension.
$render_function = 'theme_render_template';
$extension = '.tpl.php';
// The theme engine may use a different extension and a different renderer.
global $theme_engine;
if (isset($theme_engine)) {
if ($info['type'] != 'module') {
if (function_exists($theme_engine . '_render_template')) {
$render_function = $theme_engine . '_render_template';
}
$extension_function = $theme_engine . '_extension';
if (function_exists($extension_function)) {
$extension = $extension_function();
}
}
}
// In some cases, a template implementation may not have had
// template_preprocess() run (for example, if the default implementation is
// a function, but a template overrides that default implementation). In
// these cases, a template should still be able to expect to have access to
// the variables provided by template_preprocess(), so we add them here if
// they don't already exist. We don't want to run template_preprocess()
// twice (it would be inefficient and mess up zebra striping), so we use the
// 'directory' variable to determine if it has already run, which while not
// completely intuitive, is reasonably safe, and allows us to save on the
// overhead of adding some new variable to track that.
if (!isset($variables['directory'])) {
$default_template_variables = array();
template_preprocess($default_template_variables, $hook);
$variables += $default_template_variables;
}
// Render the output using the template file.
$template_file = $info['template'] . $extension;
if (isset($info['path'])) {
$template_file = $info['path'] . '/' . $template_file;
}
if (variable_get('theme_debug', FALSE)) {
$output = _theme_render_template_debug($render_function, $template_file, $variables, $extension);
}
else {
$output = $render_function($template_file, $variables);
}
}
// restore path_to_theme()
$theme_path = $temp;
return $output;
}
/**
* Returns the path to the current themed element.
*
* It can point to the active theme or the module handling a themed
* implementation. For example, when invoked within the scope of a theming call
* it will depend on where the theming function is handled. If implemented from
* a module, it will point to the module. If implemented from the active theme,
* it will point to the active theme. When called outside the scope of a
* theming call, it will always point to the active theme.
*/
function path_to_theme() {
global $theme_path;
if (!isset($theme_path)) {
drupal_theme_initialize();
}
return $theme_path;
}
/**
* Allows themes and/or theme engines to discover overridden theme functions.
*
* @param $cache
* The existing cache of theme hooks to test against.
* @param $prefixes
* An array of prefixes to test, in reverse order of importance.
*
* @return $implementations
* The functions found, suitable for returning from hook_theme;
*/
function drupal_find_theme_functions($cache, $prefixes) {
$implementations = array();
$functions = get_defined_functions();
foreach ($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 . '__');
if (!isset($info['base hook']) && !empty($pattern)) {
$matches = preg_grep('/^' . $prefix . '_' . $pattern . '/', $functions['user']);
if ($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 (list_themes() as $theme_info) {
if (!empty($theme_info->base_theme)) {
$theme_paths[$theme_info->base_theme][$theme_info->name] = dirname($theme_info->filename);
}
}
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]);
}
}
}
global $theme;
$subtheme_paths = isset($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.
$files = drupal_system_listing($regex, $path, 'name', 0);
// Find templates that implement registered theme hooks and include that in
// what is returned so that the registry knows that the theme has this
// implementation.
foreach ($files as $template => $file) {
// Ignore sub-theme templates for the current theme.
if (strpos($file->uri, str_replace($subtheme_paths, '', $file->uri)) !== 0) {
continue;
}
// Chop off the remaining extensions if there are any. $template already
// has the rightmost extension removed, but there might still be more,
// such as with .tpl.php, which still has .tpl in $template at this point.
if (($pos = strpos($template, '.')) !== FALSE) {
$template = substr($template, 0, $pos);
}
// 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),
);
}
}
// 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) {
$file = substr($match, 0, strpos($match, '.'));
// 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 default global settings specified in this function
* - the default theme-specific settings defined in any base theme's .info file
* - the default theme-specific settings defined in the theme's .info file
* - 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) {
$cache = &drupal_static(__FUNCTION__, array());
// If no key is given, use the current theme if we can determine it.
if (!isset($theme)) {
$theme = !empty($GLOBALS['theme_key']) ? $GLOBALS['theme_key'] : '';
}
if (empty($cache[$theme])) {
// Set the default values for each global setting.
// To add new global settings, add their default values below, and then
// add form elements to system_theme_settings() in system.admin.inc.
$cache[$theme] = array(
'default_logo' => 1,
'logo_path' => '',
'default_favicon' => 1,
'favicon_path' => '',
// Use the IANA-registered MIME type for ICO files as default.
'favicon_mimetype' => 'image/vnd.microsoft.icon',
);
// Turn on all default features.
$features = _system_default_theme_features();
foreach ($features as $feature) {
$cache[$theme]['toggle_' . $feature] = 1;
}
// Get the values for the theme-specific settings from the .info files of
// the theme and all its base themes.
if ($theme) {
$themes = list_themes();
$theme_object = $themes[$theme];
// Create a list which includes the current theme and all its base themes.
if (isset($theme_object->base_themes)) {
$theme_keys = array_keys($theme_object->base_themes);
$theme_keys[] = $theme;
}
else {
$theme_keys = array($theme);
}
foreach ($theme_keys as $theme_key) {
if (!empty($themes[$theme_key]->info['settings'])) {
$cache[$theme] = array_merge($cache[$theme], $themes[$theme_key]->info['settings']);
}
}
}
// Get the saved global settings from the database.
$cache[$theme] = array_merge($cache[$theme], variable_get('theme_settings', array()));
if ($theme) {
// Get the saved theme-specific settings from the database.
$cache[$theme] = array_merge($cache[$theme], variable_get('theme_' . $theme . '_settings', array()));
// If the theme does not support a particular feature, override the global
// setting and set the value to NULL.
if (!empty($theme_object->info['features'])) {
foreach ($features as $feature) {
if (!in_array($feature, $theme_object->info['features'])) {
$cache[$theme]['toggle_' . $feature] = NULL;
}
}
}
// Generate the path to the logo image.
if ($cache[$theme]['toggle_logo']) {
if ($cache[$theme]['default_logo']) {
$cache[$theme]['logo'] = file_create_url(dirname($theme_object->filename) . '/logo.png');
}
elseif ($cache[$theme]['logo_path']) {
$cache[$theme]['logo'] = file_create_url($cache[$theme]['logo_path']);
}
}
// Generate the path to the favicon.
if ($cache[$theme]['toggle_favicon']) {
if ($cache[$theme]['default_favicon']) {
if (file_exists($favicon = dirname($theme_object->filename) . '/favicon.ico')) {
$cache[$theme]['favicon'] = file_create_url($favicon);
}
else {
$cache[$theme]['favicon'] = file_create_url('misc/favicon.ico');
}
}
elseif ($cache[$theme]['favicon_path']) {
$cache[$theme]['favicon'] = file_create_url($cache[$theme]['favicon_path']);
}
else {
$cache[$theme]['toggle_favicon'] = FALSE;
}
}
}
}
return isset($cache[$theme][$setting_name]) ? $cache[$theme][$setting_name] : NULL;
}
/**
* Renders a system default template, which is essentially a PHP template.
*
* @param $template_file
* The filename of the template to render.
* @param $variables
* A keyed array of variables that will appear in the output.
*
* @return
* The output generated by the template.
*/
function theme_render_template($template_file, $variables) {
// Extract the variables to a local namespace
extract($variables, EXTR_SKIP);
// Start output buffering
ob_start();
// Include the template file
include DRUPAL_ROOT . '/' . $template_file;
// End buffering and return its contents
return ob_get_clean();
}
/**
* Renders a template for any engine.
*
* Includes the possibility to get debug output by setting the
* theme_debug variable to TRUE.
*
* @param string $template_function
* The function to call for rendering the template.
* @param string $template_file
* The filename of the template to render.
* @param array $variables
* A keyed array of variables that will appear in the output.
* @param string $extension
* The extension used by the theme engine for template files.
*
* @return string
* The output generated by the template including debug information.
*/
function _theme_render_template_debug($template_function, $template_file, $variables, $extension) {
$output = array(
'debug_prefix' => '',
'debug_info' => '',
'rendered_markup' => call_user_func($template_function, $template_file, $variables),
'debug_suffix' => '',
);
$output['debug_prefix'] .= "\n\n<!-- THEME DEBUG -->";
$output['debug_prefix'] .= "\n<!-- CALL: theme('" . check_plain($variables['theme_hook_original']) . "') -->";
// If there are theme suggestions, reverse the array so more specific
// suggestions are shown first.
if (!empty($variables['theme_hook_suggestions'])) {
$variables['theme_hook_suggestions'] = array_reverse($variables['theme_hook_suggestions']);
}
// Add debug output for directly called suggestions like
// '#theme' => 'comment__node__article'.
if (strpos($variables['theme_hook_original'], '__') !== FALSE) {
$derived_suggestions[] = $hook = $variables['theme_hook_original'];
while ($pos = strrpos($hook, '__')) {
$hook = substr($hook, 0, $pos);
$derived_suggestions[] = $hook;
}
// Get the value of the base hook (last derived suggestion) and append it
// to the end of all theme suggestions.
$base_hook = array_pop($derived_suggestions);
$variables['theme_hook_suggestions'] = array_merge($derived_suggestions, $variables['theme_hook_suggestions']);
$variables['theme_hook_suggestions'][] = $base_hook;
}
if (!empty($variables['theme_hook_suggestions'])) {
$current_template = basename($template_file);
$suggestions = $variables['theme_hook_suggestions'];
// Only add the original theme hook if it wasn't a directly called
// suggestion.
if (strpos($variables['theme_hook_original'], '__') === FALSE) {
$suggestions[] = $variables['theme_hook_original'];
}
foreach ($suggestions as &$suggestion) {
$template = strtr($suggestion, '_', '-') . $extension;
$prefix = ($template == $current_template) ? 'x' : '*';
$suggestion = $prefix . ' ' . $template;
}
$output['debug_info'] .= "\n<!-- FILE NAME SUGGESTIONS:\n " . check_plain(implode("\n ", $suggestions)) . "\n-->";
}
$output['debug_info'] .= "\n<!-- BEGIN OUTPUT from '" . check_plain($template_file) . "' -->\n";
$output['debug_suffix'] .= "\n<!-- END OUTPUT from '" . check_plain($template_file) . "' -->\n\n";
return implode('', $output);
}
/**
* Enables a given list of themes.
*
* @param $theme_list
* An array of theme names.
*/
function theme_enable($theme_list) {
drupal_clear_css_cache();
foreach ($theme_list as $key) {
db_update('system')
->fields(array('status' => 1))
->condition('type', 'theme')
->condition('name', $key)
->execute();
}
list_themes(TRUE);
menu_rebuild();
drupal_theme_rebuild();
// Invoke hook_themes_enabled() after the themes have been enabled.
module_invoke_all('themes_enabled', $theme_list);
}
/**
* Disables a given list of themes.
*
* @param $theme_list
* An array of theme names.
*/
function theme_disable($theme_list) {
// Don't disable the default theme.
if ($pos = array_search(variable_get('theme_default', 'bartik'), $theme_list) !== FALSE) {
unset($theme_list[$pos]);
if (empty($theme_list)) {
return;
}
}
drupal_clear_css_cache();
foreach ($theme_list as $key) {
db_update('system')
->fields(array('status' => 0))
->condition('type', 'theme')
->condition('name', $key)
->execute();
}
list_themes(TRUE);
menu_rebuild();
drupal_theme_rebuild();
// Invoke hook_themes_disabled after the themes have been disabled.
module_invoke_all('themes_disabled', $theme_list);
}
/**
* @addtogroup themeable
* @{
*/
/**
* Returns HTML for status and/or error messages, grouped by type.
*
* An invisible heading identifies the messages for assistive technology.
* Sighted users see a colored box. See http://www.w3.org/TR/WCAG-TECHS/H69.html
* for info.
*
* @param $variables
* An associative array containing:
* - display: (optional) Set to 'status' or 'error' to display only messages
* of that type.
*/
function theme_status_messages($variables) {
$display = $variables['display'];
$output = '';
$status_heading = array(
'status' => t('Status message'),
'error' => t('Error message'),
'warning' => t('Warning message'),
);
foreach (drupal_get_messages($display) as $type => $messages) {
$output .= "<div class=\"messages $type\">\n";
if (!empty($status_heading[$type])) {
$output .= '<h2 class="element-invisible">' . $status_heading[$type] . "</h2>\n";
}
if (count($messages) > 1) {
$output .= " <ul>\n";
foreach ($messages as $message) {
$output .= ' <li>' . $message . "</li>\n";
}
$output .= " </ul>\n";
}
else {
$output .= reset($messages);
}
$output .= "</div>\n";
}
return $output;
}
/**
* Returns HTML for a link.
*
* All Drupal code that outputs a link should call the l() function. That
* function performs some initial preprocessing, and then, if necessary, calls
* theme('link') for rendering the anchor tag.
*
* To optimize performance for sites that don't need custom theming of links,
* the l() function includes an inline copy of this function, and uses that
* copy if none of the enabled modules or the active theme implement any
* preprocess or process functions or override this theme implementation.
*
* @param $variables
* An associative array containing the keys 'text', 'path', and 'options'.
* See the l() function for information about these variables.
*
* @see l()
*/
function theme_link($variables) {
return '<a href="' . check_plain(url($variables['path'], $variables['options'])) . '"' . drupal_attributes($variables['options']['attributes']) . '>' . ($variables['options']['html'] ? $variables['text'] : check_plain($variables['text'])) . '</a>';
}
/**
* Returns HTML for a set of links.
*
* @param $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.
* - href: The link URL. If omitted, the 'title' is shown as a plain text
* item in the links list.
* - html: (optional) Whether or not 'title' is HTML. If set, the title
* will not be passed through check_plain().
* - 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 $options parameter.
* - attributes: A keyed array of attributes for the UL containing the
* list of links.
* - heading: (optional) A heading to precede the links. May be an
* associative array or a string. If it's an array, it can have the
* following elements:
* - text: The heading text.
* - level: The heading level (e.g. 'h2', 'h3').
* - class: (optional) An array of the CSS classes for the heading.
* When using a string it will be used as the text of the heading and the
* level will default to 'h2'. Headings should be used on navigation menus
* and any list of links that consistently appears on multiple pages. To
* make the heading invisible use the 'element-invisible' CSS class. Do not
* use 'display:none', which removes it from screen-readers and assistive
* technology. Headings allow screen-reader and keyboard only users to
* navigate to or skip the links. See
* http://juicystudio.com/article/screen-readers-display-none.php and
* http://www.w3.org/TR/WCAG-TECHS/H42.html for more information.
*/
function theme_links($variables) {
$links = $variables['links'];
$attributes = $variables['attributes'];
$heading = $variables['heading'];
global $language_url;
$output = '';
if (count($links) > 0) {
// Treat the heading first if it is present to prepend it to the
// list of links.
if (!empty($heading)) {
if (is_string($heading)) {
// Prepare the array that will be used when the passed heading
// is a string.
$heading = array(
'text' => $heading,
// Set the default level of the heading.
'level' => 'h2',
);
}
$output .= '<' . $heading['level'];
if (!empty($heading['class'])) {
$output .= drupal_attributes(array('class' => $heading['class']));
}
$output .= '>' . check_plain($heading['text']) . '</' . $heading['level'] . '>';
}
$output .= '<ul' . drupal_attributes($attributes) . '>';
$num_links = count($links);
$i = 1;
foreach ($links as $key => $link) {
$class = array($key);
// Add first, last and active classes to the list of links to help out themers.
if ($i == 1) {
$class[] = 'first';
}
if ($i == $num_links) {
$class[] = 'last';
}
if (isset($link['href']) && ($link['href'] == $_GET['q'] || ($link['href'] == '<front>' && drupal_is_front_page()))
&& (empty($link['language']) || $link['language']->language == $language_url->language)) {
$class[] = 'active';
}
$output .= '<li' . drupal_attributes(array('class' => $class)) . '>';
if (isset($link['href'])) {
// Pass in $link as $options, they share the same keys.
$output .= l($link['title'], $link['href'], $link);
}
elseif (!empty($link['title'])) {
// Some links are actually not links, but we wrap these in <span> for adding title and class attributes.
if (empty($link['html'])) {
$link['title'] = check_plain($link['title']);
}
$span_attributes = '';
if (isset($link['attributes'])) {
$span_attributes = drupal_attributes($link['attributes']);
}
$output .= '<span' . $span_attributes . '>' . $link['title'] . '</span>';
}
$i++;
$output .= "</li>\n";
}
$output .= '</ul>';
}
return $output;
}
/**
* Returns HTML for an image.
*
* @param $variables
* An associative array containing:
* - path: Either the path of the image file (relative to base_path()) or a
* full URL.
* - width: The width of the image (if known).
* - height: The height of the image (if known).
* - alt: The alternative text for text-based browsers. HTML 4 and XHTML 1.0
* always require an alt attribute. The HTML 5 draft allows the alt
* attribute to be omitted in some cases. Therefore, this variable defaults
* to an empty string, but can be set to NULL for the attribute to be
* omitted. Usually, neither omission nor an empty string satisfies
* accessibility requirements, so it is strongly encouraged for code
* calling theme('image') to pass a meaningful value for this variable.
* - http://www.w3.org/TR/REC-html40/struct/objects.html#h-13.8
* - http://www.w3.org/TR/xhtml1/dtds.html
* - http://dev.w3.org/html5/spec/Overview.html#alt
* - title: The title text is displayed when the image is hovered in some
* popular browsers.
* - attributes: Associative array of attributes to be placed in the img tag.
*/
function theme_image($variables) {
$attributes = $variables['attributes'];
$attributes['src'] = file_create_url($variables['path']);
foreach (array('width', 'height', 'alt', 'title') as $key) {
if (isset($variables[$key])) {
$attributes[$key] = $variables[$key];
}
}
return '<img' . drupal_attributes($attributes) . ' />';
}
/**
* Returns HTML for a breadcrumb trail.
*
* @param $variables
* An associative array containing:
* - breadcrumb: An array containing the breadcrumb links.
*/
function theme_breadcrumb($variables) {
$breadcrumb = $variables['breadcrumb'];
if (!empty($breadcrumb)) {
// Provide a navigational heading to give context for breadcrumb links to
// screen-reader users. Make the heading invisible with .element-invisible.
$output = '<h2 class="element-invisible">' . t('You are here') . '</h2>';
$output .= '<div class="breadcrumb">' . implode(' ยป ', $breadcrumb) . '</div>';
return $output;
}
}
/**
* Returns HTML for a table.
*
* @param $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.
* - "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.
* - 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 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
* - 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
* $colgroup = array(
* // COLGROUP with one COL element.
* array(
* array(
* 'class' => array('funky'), // Attribute for the COL element.
* ),
* ),
* // Colgroup with attributes and inner COL elements.
* array(
* 'data' => array(
* array(
* 'class' => array('funky'), // Attribute for the COL element.
* ),
* ),
* 'class' => array('jazzy'), // Attribute for the COLGROUP element.
* ),
* );
* @endcode
* These optional tags are used to group and set properties on columns
* within a table. For example, one may easily group three columns and
* apply same background style to all.
* - sticky: Use a "sticky" table header.
* - empty: The message to display in an extra row if table does not have any
* rows.
*/
function theme_table($variables) {
$header = $variables['header'];
$rows = $variables['rows'];
$attributes = $variables['attributes'];
$caption = $variables['caption'];
$colgroups = $variables['colgroups'];
$sticky = $variables['sticky'];
$empty = $variables['empty'];
// Add sticky headers, if applicable.
if (count($header) && $sticky) {
drupal_add_js('misc/tableheader.js');
// Add 'sticky-enabled' class to the table to identify it for JS.
// This is needed to target tables constructed by this function.
$attributes['class'][] = 'sticky-enabled';
}
$output = '<table' . drupal_attributes($attributes) . ">\n";
if (isset($caption)) {
$output .= '<caption>' . $caption . "</caption>\n";
}
// Format the table columns:
if (count($colgroups)) {
foreach ($colgroups as $number => $colgroup) {
$attributes = array();
// Check if we're dealing with a simple or complex column
if (isset($colgroup['data'])) {
foreach ($colgroup as $key => $value) {
if ($key == 'data') {
$cols = $value;
}
else {
$attributes[$key] = $value;
}
}
}
else {
$cols = $colgroup;
}
// Build colgroup
if (is_array($cols) && count($cols)) {
$output .= ' <colgroup' . drupal_attributes($attributes) . '>';
$i = 0;
foreach ($cols as $col) {
$output .= ' <col' . drupal_attributes($col) . ' />';
}
$output .= " </colgroup>\n";
}
else {
$output .= ' <colgroup' . drupal_attributes($attributes) . " />\n";
}
}
}
// Add the 'empty' row message if available.
if (!count($rows) && $empty) {
$header_count = 0;
foreach ($header as $header_cell) {
if (is_array($header_cell)) {
$header_count += isset($header_cell['colspan']) ? $header_cell['colspan'] : 1;
}
else {
$header_count++;
}
}
$rows[] = array(array('data' => $empty, 'colspan' => $header_count, 'class' => array('empty', 'message')));
}
// Format the table header:
if (count($header)) {
$ts = tablesort_init($header);
// HTML requires that the thead tag has tr tags in it followed by tbody
// tags. Using ternary operator to check and see if we have any rows.
$output .= (count($rows) ? ' <thead><tr>' : ' <tr>');
foreach ($header as $cell) {
$cell = tablesort_header($cell, $header, $ts);
$output .= _theme_table_cell($cell, TRUE);
}
// Using ternary operator to close the tags based on whether or not there are rows
$output .= (count($rows) ? " </tr></thead>\n" : "</tr>\n");
}
else {
$ts = array();
}
// Format the table rows:
if (count($rows)) {
$output .= "<tbody>\n";
$flip = array('even' => 'odd', 'odd' => 'even');
$class = 'even';
foreach ($rows as $number => $row) {
// Check if we're dealing with a simple or complex row
if (isset($row['data'])) {
$cells = $row['data'];
$no_striping = isset($row['no_striping']) ? $row['no_striping'] : FALSE;
// Set the attributes array and exclude 'data' and 'no_striping'.
$attributes = $row;
unset($attributes['data']);
unset($attributes['no_striping']);
}
else {
$cells = $row;
$attributes = array();
$no_striping = FALSE;
}
if (count($cells)) {
// Add odd/even class
if (!$no_striping) {
$class = $flip[$class];
$attributes['class'][] = $class;
}
// Build row
$output .= ' <tr' . drupal_attributes($attributes) . '>';
$i = 0;
foreach ($cells as $cell) {
$cell = tablesort_cell($cell, $header, $ts, $i++);
$output .= _theme_table_cell($cell);
}
$output .= " </tr>\n";
}
}
$output .= "</tbody>\n";
}
$output .= "</table>\n";
return $output;
}
/**
* Returns HTML for a sort icon.
*
* @param $variables
* An associative array containing:
* - style: Set to either 'asc' or 'desc', this determines which icon to
* show.
*/
function theme_tablesort_indicator($variables) {
if ($variables['style'] == "asc") {
return theme('image', array('path' => 'misc/arrow-asc.png', 'width' => 13, 'height' => 13, 'alt' => t('sort ascending'), 'title' => t('sort ascending')));
}
else {
return theme('image', array('path' => 'misc/arrow-desc.png', 'width' => 13, 'height' => 13, 'alt' => t('sort descending'), 'title' => t('sort descending')));
}
}
/**
* Returns HTML for a marker for new or updated content.
*
* @param $variables
* An associative array containing:
* - type: Number representing the marker type to display. See MARK_NEW,
* MARK_UPDATED, MARK_READ.
*/
function theme_mark($variables) {
$type = $variables['type'];
global $user;
if ($user->uid) {
if ($type == MARK_NEW) {
return ' <span class="marker">' . t('new') . '</span>';
}
elseif ($type == MARK_UPDATED) {
return ' <span class="marker">' . t('updated') . '</span>';
}
}
}
/**
* Returns HTML for a list or nested list of items.
*
* @param $variables
* An associative array containing:
* - items: An array of items to be displayed in the list. If an item is a
* string, then it is used as is. If an item is an array, then the "data"
* element of the array is used as the contents of the list item. If an item
* is an array with a "children" element, those children are displayed in a
* nested list. All other elements are treated as attributes of the list
* item element.
* - title: The title of the list.
* - type: The type of list to return (e.g. "ul", "ol").
* - attributes: The attributes applied to the list element.
*/
function theme_item_list($variables) {
$items = $variables['items'];
$title = $variables['title'];
$type = $variables['type'];
$attributes = $variables['attributes'];
// Only output the list container and title, if there are any list items.
// Check to see whether the block title exists before adding a header.
// Empty headers are not semantic and present accessibility challenges.
$output = '<div class="item-list">';
if (isset($title) && $title !== '') {
$output .= '<h3>' . $title . '</h3>';
}
if (!empty($items)) {
$output .= "<$type" . drupal_attributes($attributes) . '>';
$num_items = count($items);
$i = 0;
foreach ($items as $item) {
$attributes = array();
$children = array();
$data = '';
$i++;
if (is_array($item)) {
foreach ($item as $key => $value) {
if ($key == 'data') {
$data = $value;
}
elseif ($key == 'children') {
$children = $value;
}
else {
$attributes[$key] = $value;
}
}
}
else {
$data = $item;
}
if (count($children) > 0) {
// Render nested list.
$data .= theme_item_list(array('items' => $children, 'title' => NULL, 'type' => $type, 'attributes' => $attributes));
}
if ($i == 1) {
$attributes['class'][] = 'first';
}
if ($i == $num_items) {
$attributes['class'][] = 'last';
}
$output .= '<li' . drupal_attributes($attributes) . '>' . $data . "</li>\n";
}
$output .= "</$type>";
}
$output .= '</div>';
return $output;
}
/**
* Returns HTML for a "more help" link.
*
* @param $variables
* An associative array containing:
* - url: The URL for the link.
*/
function theme_more_help_link($variables) {
return '<div class="more-help-link">' . l(t('More help'), $variables['url']) . '</div>';
}
/**
* Returns HTML for a feed icon.
*
* @param $variables
* An associative array containing:
* - url: An internal system path or a fully qualified external URL of the
* feed.
* - title: A descriptive title of the feed.
*/
function theme_feed_icon($variables) {
$text = t('Subscribe to !feed-title', array('!feed-title' => $variables['title']));
if ($image = theme('image', array('path' => 'misc/feed.png', 'width' => 16, 'height' => 16, 'alt' => $text))) {
return l($image, $variables['url'], array('html' => TRUE, 'attributes' => array('class' => array('feed-icon'), 'title' => $text)));
}
}
/**
* Returns HTML for a generic HTML tag with attributes.
*
* @param $variables
* An associative array containing:
* - element: An associative array describing the tag:
* - #tag: The tag name to output. Typical tags added to the HTML HEAD:
* - meta: To provide meta information, such as a page refresh.
* - link: To refer to stylesheets and other contextual information.
* - script: To load JavaScript.
* - #attributes: (optional) An array of HTML attributes to apply to the
* tag.
* - #value: (optional) A string containing tag content, such as inline
* CSS.
* - #value_prefix: (optional) A string to prepend to #value, e.g. a CDATA
* wrapper prefix.
* - #value_suffix: (optional) A string to append to #value, e.g. a CDATA
* wrapper suffix.
*/
function theme_html_tag($variables) {
$element = $variables['element'];
$attributes = isset($element['#attributes']) ? drupal_attributes($element['#attributes']) : '';
if (!isset($element['#value'])) {
return '<' . $element['#tag'] . $attributes . " />\n";
}
else {
$output = '<' . $element['#tag'] . $attributes . '>';
if (isset($element['#value_prefix'])) {
$output .= $element['#value_prefix'];
}
$output .= $element['#value'];
if (isset($element['#value_suffix'])) {
$output .= $element['#value_suffix'];
}
$output .= '</' . $element['#tag'] . ">\n";
return $output;
}
}
/**
* Returns HTML for a "more" link, like those used in blocks.
*
* @param $variables
* An associative array containing:
* - url: The URL of the main page.
* - title: A descriptive verb for the link, like 'Read more'.
*/
function theme_more_link($variables) {
return '<div class="more-link">' . l(t('More'), $variables['url'], array('attributes' => array('title' => $variables['title']))) . '</div>';
}
/**
* Returns HTML for a username, potentially linked to the user's page.
*
* @param $variables
* An associative array containing:
* - account: The user object to format.
* - name: The user's name, sanitized.
* - extra: Additional text to append to the user's name, sanitized.
* - link_path: The path or URL of the user's profile page, home page, or
* other desired page to link to for more information about the user.
* - link_options: An array of options to pass to the l() function's $options
* parameter if linking the user's name to the user's page.
* - attributes_array: An array of attributes to pass to the
* drupal_attributes() function if not linking to the user's page.
*
* @see template_preprocess_username()
* @see template_process_username()
*/
function theme_username($variables) {
if (isset($variables['link_path'])) {
// We have a link path, so we should generate a link using l().
// Additional classes may be added as array elements like
// $variables['link_options']['attributes']['class'][] = 'myclass';
$output = l($variables['name'] . $variables['extra'], $variables['link_path'], $variables['link_options']);
}
else {
// Modules may have added important attributes so they must be included
// in the output. Additional classes may be added as array elements like
// $variables['attributes_array']['class'][] = 'myclass';
$output = '<span' . drupal_attributes($variables['attributes_array']) . '>' . $variables['name'] . $variables['extra'] . '</span>';
}
return $output;
}
/**
* Returns HTML for a progress bar.
*
* Note that the core Batch API uses this only for non-JavaScript batch jobs.
*
* @param $variables
* An associative array containing:
* - percent: The percentage of the progress.
* - message: A string containing information to be displayed.
*/
function theme_progress_bar($variables) {
$output = '<div id="progress" class="progress">';
$output .= '<div class="bar"><div class="filled" style="width: ' . $variables['percent'] . '%"></div></div>';
$output .= '<div class="percentage">' . $variables['percent'] . '%</div>';
$output .= '<div class="message">' . $variables['message'] . '</div>';
$output .= '</div>';
return $output;
}
/**
* Returns HTML for an indentation div; used for drag and drop tables.
*
* @param $variables
* An associative array containing:
* - size: Optional. The number of indentations to create.
*/
function theme_indentation($variables) {
$output = '';
for ($n = 0; $n < $variables['size']; $n++) {
$output .= '<div class="indentation"> </div>';
}
return $output;
}
/**
* @} End of "addtogroup themeable".
*/
/**
* Returns HTML output for a single table cell for theme_table().
*
* @param $cell
* Array of cell information, or string to display in cell.
* @param bool $header
* TRUE if this cell is a table header cell, FALSE if it is an ordinary
* table cell. If $cell is an array with element 'header' set to TRUE, that
* will override the $header parameter.
*
* @return
* HTML for the cell.
*/
function _theme_table_cell($cell, $header = FALSE) {
$attributes = '';
if (is_array($cell)) {
$data = isset($cell['data']) ? $cell['data'] : '';
// Cell's data property can be a string or a renderable array.
if (is_array($data)) {
$data = drupal_render($data);
}
$header |= isset($cell['header']);
unset($cell['data']);
unset($cell['header']);
$attributes = drupal_attributes($cell);
}
else {
$data = $cell;
}
if ($header) {
$output = "<th$attributes>$data</th>";
}
else {
$output = "<td$attributes>$data</td>";
}
return $output;
}
/**
* Adds a default set of helper variables for variable processors and templates.
*
* This function is called for theme hooks implemented as templates only, not
* for theme hooks implemented as functions. This preprocess function is the
* first in the sequence of preprocessing and processing functions that is
* called when preparing variables for a template. See theme() for more details
* about the full sequence.
*
* @see theme()
* @see template_process()
*/
function template_preprocess(&$variables, $hook) {
global $user;
static $count = array();
// Track run count for each hook to provide zebra striping. See
// "template_preprocess_block()" which provides the same feature specific to
// blocks.
$count[$hook] = isset($count[$hook]) && is_int($count[$hook]) ? $count[$hook] : 1;
$variables['zebra'] = ($count[$hook] % 2) ? 'odd' : 'even';
$variables['id'] = $count[$hook]++;
// Tell all templates where they are located.
$variables['directory'] = path_to_theme();
// Initialize html class attribute for the current hook.
$variables['classes_array'] = array(drupal_html_class($hook));
// 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'];
// Global $user object shouldn't change during a page request once rendering
// has started, but if there's an edge case where it does, re-fetch the
// variables appropriate for the new user.
if (!isset($default_variables) || ($user !== $default_variables['user'])) {
$default_variables = _template_preprocess_default_variables();
}
$variables += $default_variables;
}
/**
* Returns hook-independent variables to template_preprocess().
*/
function _template_preprocess_default_variables() {
global $user;
// Variables that don't depend on a database connection.
$variables = array(
'attributes_array' => array(),
'title_attributes_array' => array(),
'content_attributes_array' => array(),
'title_prefix' => array(),
'title_suffix' => array(),
'user' => $user,
'db_is_active' => !defined('MAINTENANCE_MODE'),
'is_admin' => FALSE,
'logged_in' => FALSE,
);
// The user object has no uid property when the database does not exist during
// install. The user_access() check deals with issues when in maintenance mode
// as uid is set but the user.module has not been included.
if (isset($user->uid) && function_exists('user_access')) {
$variables['is_admin'] = user_access('access administration pages');
$variables['logged_in'] = ($user->uid > 0);
}
// drupal_is_front_page() might throw an exception.
try {
$variables['is_front'] = drupal_is_front_page();
}
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;
}
return $variables;
}
/**
* Adds helper variables derived from variables defined during preprocessing.
*
* When preparing variables for a theme hook implementation, all 'preprocess'
* functions run first, then all 'process' functions (see theme() for details
* about the full sequence).
*
* This function serializes array variables manipulated during the preprocessing
* phase into strings for convenient use by templates. As with
* template_preprocess(), this function does not get called for theme hooks
* implemented as functions.
*
* @see theme()
* @see template_preprocess()
*/
function template_process(&$variables, $hook) {
// Flatten out classes.
$variables['classes'] = implode(' ', $variables['classes_array']);
// Flatten out attributes, title_attributes, and content_attributes.
// Because this function can be called very often, and often with empty
// attributes, optimize performance by only calling drupal_attributes() if
// necessary.
$variables['attributes'] = $variables['attributes_array'] ? drupal_attributes($variables['attributes_array']) : '';
$variables['title_attributes'] = $variables['title_attributes_array'] ? drupal_attributes($variables['title_attributes_array']) : '';
$variables['content_attributes'] = $variables['content_attributes_array'] ? drupal_attributes($variables['content_attributes_array']) : '';
}
/**
* Preprocess variables for html.tpl.php
*
* @see system_elements()
* @see html.tpl.php
*/
function template_preprocess_html(&$variables) {
// Compile a list of classes that are going to be applied to the body element.
// This allows advanced theming based on context (home page, node of certain type, etc.).
// Add a class that tells us whether we're on the front page or not.
$variables['classes_array'][] = $variables['is_front'] ? 'front' : 'not-front';
// Add a class that tells us whether the page is viewed by an authenticated user or not.
$variables['classes_array'][] = $variables['logged_in'] ? 'logged-in' : 'not-logged-in';
// Add information about the number of sidebars.
if (!empty($variables['page']['sidebar_first']) && !empty($variables['page']['sidebar_second'])) {
$variables['classes_array'][] = 'two-sidebars';
}
elseif (!empty($variables['page']['sidebar_first'])) {
$variables['classes_array'][] = 'one-sidebar sidebar-first';
}
elseif (!empty($variables['page']['sidebar_second'])) {
$variables['classes_array'][] = 'one-sidebar sidebar-second';
}
else {
$variables['classes_array'][] = 'no-sidebars';
}
// Populate the body classes.
if ($suggestions = theme_get_suggestions(arg(), 'page', '-')) {
foreach ($suggestions as $suggestion) {
if ($suggestion != 'page-front') {
// Add current suggestion to page classes to make it possible to theme
// the page depending on the current page type (e.g. node, admin, user,
// etc.) as well as more specific data like node-12 or node-edit.
$variables['classes_array'][] = drupal_html_class($suggestion);
}
}
}
// If on an individual node page, add the node type to body classes.
if ($node = menu_get_object()) {
$variables['classes_array'][] = drupal_html_class('node-type-' . $node->type);
}
// RDFa allows annotation of XHTML pages with RDF data, while GRDDL provides
// mechanisms for extraction of this RDF content via XSLT transformation
// using an associated GRDDL profile.
$variables['rdf_namespaces'] = drupal_get_rdf_namespaces();
$variables['grddl_profile'] = 'http://www.w3.org/1999/xhtml/vocab';
$variables['language'] = $GLOBALS['language'];
$variables['language']->dir = $GLOBALS['language']->direction ? 'rtl' : 'ltr';
// Add favicon.
if (theme_get_setting('toggle_favicon')) {
$favicon = theme_get_setting('favicon');
$type = theme_get_setting('favicon_mimetype');
drupal_add_html_head_link(array('rel' => 'shortcut icon', 'href' => drupal_strip_dangerous_protocols($favicon), 'type' => $type));
}
// Construct page title.
if (drupal_get_title()) {
$head_title = array(
'title' => strip_tags(drupal_get_title()),
'name' => check_plain(variable_get('site_name', 'Drupal')),
);
}
else {
$head_title = array('name' => check_plain(variable_get('site_name', 'Drupal')));
if (variable_get('site_slogan', '')) {
$head_title['slogan'] = filter_xss_admin(variable_get('site_slogan', ''));
}
}
$variables['head_title_array'] = $head_title;
$variables['head_title'] = implode(' | ', $head_title);
// Populate the page template suggestions.
if ($suggestions = theme_get_suggestions(arg(), 'html')) {
$variables['theme_hook_suggestions'] = $suggestions;
}
}
/**
* Preprocess variables for page.tpl.php
*
* Most themes utilize their own copy of page.tpl.php. The default is located
* inside "modules/system/page.tpl.php". Look in there for the full list of
* variables.
*
* Uses the arg() function to generate a series of page template suggestions
* based on the current path.
*
* Any changes to variables in this preprocessor should also be changed inside
* template_preprocess_maintenance_page() to keep all of them consistent.
*
* @see drupal_render_page()
* @see template_process_page()
* @see page.tpl.php
*/
function template_preprocess_page(&$variables) {
// Move some variables to the top level for themer convenience and template cleanliness.
$variables['show_messages'] = $variables['page']['#show_messages'];
foreach (system_region_list($GLOBALS['theme']) as $region_key => $region_name) {
if (!isset($variables['page'][$region_key])) {
$variables['page'][$region_key] = array();
}
if ($region_content = drupal_get_region_content($region_key)) {
$variables['page'][$region_key][]['#markup'] = $region_content;
}
}
// Set up layout variable.
$variables['layout'] = 'none';
if (!empty($variables['page']['sidebar_first'])) {
$variables['layout'] = 'first';
}
if (!empty($variables['page']['sidebar_second'])) {
$variables['layout'] = ($variables['layout'] == 'first') ? 'both' : 'second';
}
$variables['base_path'] = base_path();
$variables['front_page'] = url();
$variables['feed_icons'] = drupal_get_feeds();
$variables['language'] = $GLOBALS['language'];
$variables['language']->dir = $GLOBALS['language']->direction ? 'rtl' : 'ltr';
$variables['logo'] = theme_get_setting('logo');
$variables['main_menu'] = theme_get_setting('toggle_main_menu') ? menu_main_menu() : array();
$variables['secondary_menu'] = theme_get_setting('toggle_secondary_menu') ? menu_secondary_menu() : array();
$variables['action_links'] = menu_local_actions();
$variables['site_name'] = (theme_get_setting('toggle_name') ? filter_xss_admin(variable_get('site_name', 'Drupal')) : '');
$variables['site_slogan'] = (theme_get_setting('toggle_slogan') ? filter_xss_admin(variable_get('site_slogan', '')) : '');
$variables['tabs'] = menu_local_tabs();
if ($node = menu_get_object()) {
$variables['node'] = $node;
}
// Populate the page template suggestions.
if ($suggestions = theme_get_suggestions(arg(), 'page')) {
$variables['theme_hook_suggestions'] = $suggestions;
}
}
/**
* Process variables for page.tpl.php
*
* Perform final addition of variables before passing them into the template.
* To customize these variables, simply set them in an earlier step.
*
* @see template_preprocess_page()
* @see page.tpl.php
*/
function template_process_page(&$variables) {
if (!isset($variables['breadcrumb'])) {
// Build the breadcrumb last, so as to increase the chance of being able to
// re-use the cache of an already rendered menu containing the active link
// for the current page.
// @see menu_tree_page_data()
$variables['breadcrumb'] = theme('breadcrumb', array('breadcrumb' => drupal_get_breadcrumb()));
}
if (!isset($variables['title'])) {
$variables['title'] = drupal_get_title();
}
// Generate messages last in order to capture as many as possible for the
// current page.
if (!isset($variables['messages'])) {
$variables['messages'] = $variables['show_messages'] ? theme('status_messages') : '';
}
}
/**
* Process variables for html.tpl.php
*
* Perform final addition and modification of variables before passing into
* the template. To customize these variables, call drupal_render() on elements
* in $variables['page'] during THEME_preprocess_page().
*
* @see template_preprocess_html()
* @see html.tpl.php
*/
function template_process_html(&$variables) {
// Render page_top and page_bottom into top level variables.
$variables['page_top'] = drupal_render($variables['page']['page_top']);
$variables['page_bottom'] = drupal_render($variables['page']['page_bottom']);
// Place the rendered HTML for the page body into a top level variable.
$variables['page'] = $variables['page']['#children'];
$variables['page_bottom'] .= drupal_get_js('footer');
$variables['head'] = drupal_get_html_head();
$variables['css'] = drupal_add_css();
$variables['styles'] = drupal_get_css();
$variables['scripts'] = drupal_get_js();
}
/**
* Generate an array of suggestions from path arguments.
*
* This is typically called for adding to the 'theme_hook_suggestions' or
* 'classes_array' variables from within preprocess functions, when wanting to
* base the additional suggestions on the path of the current page.
*
* @param $args
* An array of path arguments, such as from function arg().
* @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
* $variables['theme_hook_suggestions'] within a preprocess function or to
* $variables['classes_array'] if the suggestions represent extra CSS classes.
*/
function theme_get_suggestions($args, $base, $delimiter = '__') {
// Build a list of suggested theme hooks or body classes 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 and body classes:
//
// page__node page-node
// page__node__% page-node-%
// page__node__1 page-node-1
// page__node__edit 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_is_front_page()) {
// Front templates should be based on root only, not prefixed arguments.
$suggestions[] = $base . $delimiter . 'front';
}
return $suggestions;
}
/**
* Process variables for maintenance-page.tpl.php.
*
* The variables array generated here is a mirror of
* template_preprocess_page(). This preprocessor will run its course when
* theme_maintenance_page() is invoked. An alternate template file of
* maintenance-page--offline.tpl.php can be used when the database is offline to
* hide errors and completely replace the content.
*
* The $variables array contains the following arguments:
* - $content
*
* @see maintenance-page.tpl.php
*/
function template_preprocess_maintenance_page(&$variables) {
// Add favicon
if (theme_get_setting('toggle_favicon')) {
$favicon = theme_get_setting('favicon');
$type = theme_get_setting('favicon_mimetype');
drupal_add_html_head_link(array('rel' => 'shortcut icon', 'href' => drupal_strip_dangerous_protocols($favicon), 'type' => $type));
}
global $theme;
// Retrieve the theme data to list all available regions.
$theme_data = list_themes();
$regions = $theme_data[$theme]->info['regions'];
// Get all region content set with drupal_add_region_content().
foreach (array_keys($regions) as $region) {
// Assign region to a region variable.
$region_content = drupal_get_region_content($region);
isset($variables[$region]) ? $variables[$region] .= $region_content : $variables[$region] = $region_content;
}
// Setup layout variable.
$variables['layout'] = 'none';
if (!empty($variables['sidebar_first'])) {
$variables['layout'] = 'first';
}
if (!empty($variables['sidebar_second'])) {
$variables['layout'] = ($variables['layout'] == 'first') ? 'both' : 'second';
}
// Construct page title
if (drupal_get_title()) {
$head_title = array(
'title' => strip_tags(drupal_get_title()),
'name' => variable_get('site_name', 'Drupal'),
);
}
else {
$head_title = array('name' => variable_get('site_name', 'Drupal'));
if (variable_get('site_slogan', '')) {
$head_title['slogan'] = variable_get('site_slogan', '');
}
}
// set the default language if necessary
$language = isset($GLOBALS['language']) ? $GLOBALS['language'] : language_default();
$variables['head_title_array'] = $head_title;
$variables['head_title'] = implode(' | ', $head_title);
$variables['base_path'] = base_path();
$variables['front_page'] = url();
$variables['breadcrumb'] = '';
$variables['feed_icons'] = '';
$variables['help'] = '';
$variables['language'] = $language;
$variables['language']->dir = $language->direction ? 'rtl' : 'ltr';
$variables['logo'] = theme_get_setting('logo');
$variables['messages'] = $variables['show_messages'] ? theme('status_messages') : '';
$variables['main_menu'] = array();
$variables['secondary_menu'] = array();
$variables['site_name'] = (theme_get_setting('toggle_name') ? variable_get('site_name', 'Drupal') : '');
$variables['site_slogan'] = (theme_get_setting('toggle_slogan') ? variable_get('site_slogan', '') : '');
$variables['tabs'] = '';
$variables['title'] = drupal_get_title();
// Compile a list of classes that are going to be applied to the body element.
$variables['classes_array'][] = 'in-maintenance';
if (isset($variables['db_is_active']) && !$variables['db_is_active']) {
$variables['classes_array'][] = 'db-offline';
}
if ($variables['layout'] == 'both') {
$variables['classes_array'][] = 'two-sidebars';
}
elseif ($variables['layout'] == 'none') {
$variables['classes_array'][] = 'no-sidebars';
}
else {
$variables['classes_array'][] = 'one-sidebar sidebar-' . $variables['layout'];
}
// Dead databases will show error messages so supplying this template will
// allow themers to override the page and the content completely.
if (isset($variables['db_is_active']) && !$variables['db_is_active']) {
$variables['theme_hook_suggestion'] = 'maintenance_page__offline';
}
}
/**
* Theme process function for theme_maintenance_field().
*
* The variables array generated here is a mirror of template_process_html().
* This processor will run its course when theme_maintenance_page() is invoked.
*
* @see maintenance-page.tpl.php
* @see template_process_html()
*/
function template_process_maintenance_page(&$variables) {
$variables['head'] = drupal_get_html_head();
$variables['css'] = drupal_add_css();
$variables['styles'] = drupal_get_css();
$variables['scripts'] = drupal_get_js();
}
/**
* Preprocess variables for region.tpl.php
*
* Prepares the values passed to the theme_region function to be passed into a
* pluggable template engine. Uses the region name to generate a template file
* suggestions. If none are found, the default region.tpl.php is used.
*
* @see drupal_region_class()
* @see region.tpl.php
*/
function template_preprocess_region(&$variables) {
// Create the $content variable that templates expect.
$variables['content'] = $variables['elements']['#children'];
$variables['region'] = $variables['elements']['#region'];
$variables['classes_array'][] = drupal_region_class($variables['region']);
$variables['theme_hook_suggestions'][] = 'region__' . $variables['region'];
}
/**
* Preprocesses variables for theme_username().
*
* Modules that make any changes to variables like 'name' or 'extra' must insure
* that the final string is safe to include directly in the output by using
* check_plain() or filter_xss().
*
* @see template_process_username()
*/
function template_preprocess_username(&$variables) {
$account = $variables['account'];
$variables['extra'] = '';
if (empty($account->uid)) {
$variables['uid'] = 0;
if (theme_get_setting('toggle_comment_user_verification')) {
$variables['extra'] = ' (' . t('not verified') . ')';
}
}
else {
$variables['uid'] = (int) $account->uid;
}
// Set the name to a formatted name that is safe for printing and
// that won't break tables by being too long. Keep an unshortened,
// unsanitized version, in case other preprocess functions want to implement
// their own shortening logic or add markup. If they do so, they must ensure
// that $variables['name'] is safe for printing.
$name = $variables['name_raw'] = format_username($account);
if (drupal_strlen($name) > 20) {
$name = drupal_substr($name, 0, 15) . '...';
}
$variables['name'] = check_plain($name);
$variables['profile_access'] = user_access('access user profiles');
$variables['link_attributes'] = array();
// Populate link path and attributes if appropriate.
if ($variables['uid'] && $variables['profile_access']) {
// We are linking to a local user.
$variables['link_attributes'] = array('title' => t('View user profile.'));
$variables['link_path'] = 'user/' . $variables['uid'];
}
elseif (!empty($account->homepage)) {
// Like the 'class' attribute, the 'rel' attribute can hold a
// space-separated set of values, so initialize it as an array to make it
// easier for other preprocess functions to append to it.
$variables['link_attributes'] = array('rel' => array('nofollow'));
$variables['link_path'] = $account->homepage;
$variables['homepage'] = $account->homepage;
}
// We do not want the l() function to check_plain() a second time.
$variables['link_options']['html'] = TRUE;
// Set a default class.
$variables['attributes_array'] = array('class' => array('username'));
}
/**
* Processes variables for theme_username().
*
* @see template_preprocess_username()
*/
function template_process_username(&$variables) {
// Finalize the link_options array for passing to the l() function.
// This is done in the process phase so that attributes may be added by
// modules or the theme during the preprocess phase.
if (isset($variables['link_path'])) {
// $variables['attributes_array'] contains attributes that should be applied
// regardless of whether a link is being rendered or not.
// $variables['link_attributes'] contains attributes that should only be
// applied if a link is being rendered. Preprocess functions are encouraged
// to use the former unless they want to add attributes on the link only.
// If a link is being rendered, these need to be merged. Some attributes are
// themselves arrays, so the merging needs to be recursive.
$variables['link_options']['attributes'] = array_merge_recursive($variables['link_attributes'], $variables['attributes_array']);
}
}