theme.inc
Same filename in other branches
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.
File
-
includes/
theme.inc
View source
<?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($offset) {
// Since the theme registry allows for theme hooks to be requested that
// are not registered, just check the existence of the key in the registry.
// Use array_key_exists() here since a NULL value indicates that the theme
// hook exists but has not yet been requested.
return isset($this->storage[$offset]) || array_key_exists($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();
$theme_functions = preg_grep('/^(' . implode(')|(', $prefixes) . ')_/', $functions['user']);
foreach ($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 . '/', $theme_functions);
if ($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 array $variables
* An associative array containing the keys:
* - text: The text of the link.
* - path: The internal path or external URL being linked to. It is used as
* the $path parameter of the url() function.
* - options: (optional) An array that defaults to empty, but can contain:
* - attributes: Can contain optional attributes:
* - class: must be declared in an array. Example: 'class' =>
* array('class_name1','class_name2').
* - title: must be a string. Example: 'title' => 'Example title'
* - Others are more flexible as long as they work with
* drupal_attributes($variables['options']['attributes]).
* - html: Boolean flag that tells whether text contains HTML or plain
* text. If set to TRUE, the text value will not be sanitized so the
calling function must ensure that it already contains safe HTML.
* The elements $variables['options']['attributes'] and
* $variables['options']['html'] are used in this function similarly to the
* way that $options['attributes'] and $options['html'] are used in l().
* The link itself is built by the url() function, which takes
* $variables['path'] and $variables['options'] as arguments.
*
* @see l()
* @see url()
*/
function theme_link($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 = (array) $variables['links'];
$attributes = (array) $variables['attributes'];
$heading = $variables['heading'];
global $language_url;
$output = '';
if (!empty($links)) {
// 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(' » ', $breadcrumb) . '</div>';
return $output;
}
}
/**
* Returns HTML for a table.
*
* @param array $variables
* An associative array containing:
* - header: An array containing the table headers. Each element of the array
* can be either a localized string or an associative array with the
* following keys:
* - "data": The localized title of the table column.
* - "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
* - footer: An array of table rows which will be printed within a <tfoot>
* tag, in the same format as the rows element (see above).
* The structure is the same the one defined for the "rows" key except
* that the no_striping boolean has no effect, there is no rows striping
* for the table footer.
* - 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.
*
* @return string
* The HTML output.
*/
function theme_table(array $variables) {
$header = $variables['header'];
$rows = $variables['rows'];
$attributes = $variables['attributes'];
$caption = $variables['caption'];
$colgroups = $variables['colgroups'];
$sticky = $variables['sticky'];
$empty = $variables['empty'];
// Add sticky headers, if applicable.
if (!empty($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>' . $caption . "</caption>\n";
}
// Format the table columns:
if (!empty($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 (empty($rows) && $empty) {
$header_count = 0;
if (!empty($header)) {
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' => $header_count,
'class' => array(
'empty',
'message',
),
),
);
}
// Format the table header.
if (!empty($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.
$output .= !empty($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.
$output .= !empty($rows) ? " </tr></thead>\n" : "</tr>\n";
}
else {
$ts = array();
}
// Format the table and footer rows.
$sections = array();
if (!empty($rows)) {
$sections['tbody'] = $rows;
}
if (!empty($variables['footer'])) {
$sections['tfoot'] = $variables['footer'];
}
// tbody and tfoot have the same structure and are built using the same
// procedure.
foreach ($sections as $tag => $content) {
$output .= "<" . $tag . ">\n";
$flip = array(
'even' => 'odd',
'odd' => 'even',
);
$class = 'even';
$default_no_striping = $tag === 'tfoot';
foreach ($content 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'] : $default_no_striping;
// 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 = $default_no_striping;
}
if (!empty($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 .= "</" . $tag . ">\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'], REGIONS_ALL, FALSE) as $region_key) {
if (!isset($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(
"/",
"\\",
"\x00",
'-',
), 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']);
}
}Functions
| Title | Deprecated | Summary |
|---|---|---|
| drupal_find_base_themes | Find all the base themes for the specified theme. | |
| drupal_find_theme_functions | Allows themes and/or theme engines to discover overridden theme functions. | |
| drupal_find_theme_templates | Allows themes and/or theme engines to easily discover overridden templates. | |
| drupal_theme_access | Determines if a theme is available to use. | |
| drupal_theme_initialize | Initializes the theme system by loading the theme. | |
| drupal_theme_rebuild | Forces the system to rebuild the theme registry. | |
| list_themes | Returns a list of all currently available themes. | |
| path_to_theme | Returns the path to the current themed element. | |
| template_preprocess | Adds a default set of helper variables for variable processors and templates. | |
| template_preprocess_html | Preprocess variables for html.tpl.php | |
| template_preprocess_maintenance_page | Process variables for maintenance-page.tpl.php. | |
| template_preprocess_page | Preprocess variables for page.tpl.php | |
| template_preprocess_region | Preprocess variables for region.tpl.php | |
| template_preprocess_username | Preprocesses variables for theme_username(). | |
| template_process | Adds helper variables derived from variables defined during preprocessing. | |
| template_process_html | Process variables for html.tpl.php | |
| template_process_maintenance_page | Theme process function for theme_maintenance_field(). | |
| template_process_page | Process variables for page.tpl.php | |
| template_process_username | Processes variables for theme_username(). | |
| theme | Generates themed output. | |
| theme_breadcrumb | Returns HTML for a breadcrumb trail. | |
| theme_disable | Disables a given list of themes. | |
| theme_enable | Enables a given list of themes. | |
| theme_feed_icon | Returns HTML for a feed icon. | |
| theme_get_registry | Gets the theme registry. | |
| theme_get_setting | Retrieves a setting for the current theme or for a given theme. | |
| theme_get_suggestions | Generate an array of suggestions from path arguments. | |
| theme_html_tag | Returns HTML for a generic HTML tag with attributes. | |
| theme_image | Returns HTML for an image. | |
| theme_indentation | Returns HTML for an indentation div; used for drag and drop tables. | |
| theme_item_list | Returns HTML for a list or nested list of items. | |
| theme_link | Returns HTML for a link. | |
| theme_links | Returns HTML for a set of links. | |
| theme_mark | Returns HTML for a marker for new or updated content. | |
| theme_more_help_link | Returns HTML for a "more help" link. | |
| theme_more_link | Returns HTML for a "more" link, like those used in blocks. | |
| theme_progress_bar | Returns HTML for a progress bar. | |
| theme_render_template | Renders a system default template, which is essentially a PHP template. | |
| theme_status_messages | Returns HTML for status and/or error messages, grouped by type. | |
| theme_table | Returns HTML for a table. | |
| theme_tablesort_indicator | Returns HTML for a sort icon. | |
| theme_username | Returns HTML for a username, potentially linked to the user's page. | |
| _drupal_theme_access | Helper function for determining access to a theme. | |
| _drupal_theme_initialize | Initializes the theme system given already loaded information. | |
| _template_preprocess_default_variables | Returns hook-independent variables to template_preprocess(). | |
| _theme_build_registry | Builds the theme registry cache. | |
| _theme_load_registry | Gets the theme_registry cache; if it doesn't exist, builds it. | |
| _theme_process_registry | Process a single implementation of hook_theme(). | |
| _theme_registry_callback | Sets the callback that will be used by theme_get_registry(). | |
| _theme_render_template_debug | Renders a template for any engine. |
Constants
| Title | Deprecated | Summary |
|---|---|---|
| MARK_NEW | Mark content as being new. | |
| MARK_READ | Mark content as read. | |
| MARK_UPDATED | Mark content as being updated. |
Classes
| Title | Deprecated | Summary |
|---|---|---|
| ThemeRegistry | Builds the run-time theme registry. |
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