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<?php
// $Id: theme.inc,v 1.415.2.2 2008/03/25 11:55:08 goba Exp $
/**
* @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.
*
* @see <a href="http://drupal.org/node/253">Theme system</a>
* @see themeable
*/
/**
* @name Content markers
* @{
* Markers used by theme_mark() and node_mark() to designate content.
* @see theme_mark(), node_mark()
*/
define('MARK_READ', 0);
define('MARK_NEW', 1);
define('MARK_UPDATED', 2);
/**
* @} End of "Content markers".
*/
/**
* Initialize the theme system by loading the theme.
*/
function init_theme() {
global $theme, $user, $custom_theme, $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 enabled themes.
$theme = !empty($user->theme) && !empty($themes[$user->theme]->status) ? $user->theme : variable_get('theme_default', 'garland');
// Allow modules to override the present theme... only select custom theme
// if it is available in the list of installed themes.
$theme = $custom_theme && $themes[$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)) {
$base_theme[] = $new_base_theme = $themes[$themes[$ancestor]->base_theme];
$ancestor = $themes[$ancestor]->base_theme;
}
_init_theme($themes[$theme], array_reverse($base_theme));
}
/**
* Initialize 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 $registry_callback
* The callback to invoke to set the theme registry.
*/
function _init_theme($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, 'theme', $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, 'theme');
}
$theme_engine = NULL;
// Initialize the theme.
if (isset($theme->engine)) {
// Include the engine.
include_once './'. $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 './'. $base->owner;
}
}
// and our theme gets one too.
if (!empty($theme->owner)) {
include_once './'. $theme->owner;
}
}
$registry_callback($theme, $base_theme, $theme_engine);
}
/**
* Retrieve the stored theme registry. If the theme registry is already
* in memory it will be returned; otherwise it will attempt to load the
* registry from cache. If this fails, it will construct the registry and
* cache it.
*/
function theme_get_registry($registry = NULL) {
static $theme_registry = NULL;
if (isset($registry)) {
$theme_registry = $registry;
}
return $theme_registry;
}
/**
* Store the theme registry in memory.
*/
function _theme_set_registry($registry) {
// Pass through for setting of static variable.
return theme_get_registry($registry);
}
/**
* Get the theme_registry cache from the database; if it doesn't exist, build
* it.
*
* @param $theme
* The loaded $theme object.
* @param $base_theme
* An array of loaded $theme objects representing the ancestor themes in
* oldest first order.
* @param theme_engine
* The name of the theme engine.
*/
function _theme_load_registry($theme, $base_theme = NULL, $theme_engine = NULL) {
// Check the theme registry cache; if it exists, use it.
$cache = cache_get("theme_registry:$theme->name", 'cache');
if (isset($cache->data)) {
$registry = $cache->data;
}
else {
// If not, build one and cache it.
$registry = _theme_build_registry($theme, $base_theme, $theme_engine);
_theme_save_registry($theme, $registry);
}
_theme_set_registry($registry);
}
/**
* Write the theme_registry cache into the database.
*/
function _theme_save_registry($theme, $registry) {
cache_set("theme_registry:$theme->name", $registry);
}
/**
* Force the system to rebuild the theme registry; this should be called
* when modules are added to the system, or when a dynamic system needs
* to add more theme hooks.
*/
function drupal_rebuild_theme_registry() {
cache_clear_all('theme_registry', 'cache', TRUE);
}
/**
* Process a single invocation of the theme hook. $type will be one
* of 'module', 'theme_engine' or 'theme' and it tells us some
* important information.
*
* Because $cache is a reference, the cache will be continually
* expanded upon; new entries will replace old entries in the
* array_merge, but we are careful to ensure some data is carried
* forward, such as the arguments a theme hook needs.
*
* An override flag can be set for preprocess functions. When detected the
* cached preprocessors for the hook will not be merged with the newly set.
* This can be useful to themes and theme engines by giving them more control
* over how and when the preprocess functions are run.
*/
function _theme_process_registry(&$cache, $name, $type, $theme, $path) {
$function = $name .'_theme';
if (function_exists($function)) {
$result = $function($cache, $type, $theme, $path);
foreach ($result as $hook => $info) {
$result[$hook]['type'] = $type;
$result[$hook]['theme path'] = $path;
// if function and file are left out, default to standard naming
// conventions.
if (!isset($info['template']) && !isset($info['function'])) {
$result[$hook]['function'] = ($type == 'module' ? 'theme_' : $name .'_') . $hook;
}
// If a path is set in the info, use what was set. Otherwise use the
// default path. This is mostly so system.module can declare theme
// functions on behalf of core .include files.
// All files are included to be safe. Conditionally included
// files can prevent them from getting registered.
if (isset($info['file']) && !isset($info['path'])) {
$result[$hook]['file'] = $path .'/'. $info['file'];
include_once($result[$hook]['file']);
}
elseif (isset($info['file']) && isset($info['path'])) {
include_once($info['path'] .'/'. $info['file']);
}
if (isset($info['template']) && !isset($info['path'])) {
$result[$hook]['template'] = $path .'/'. $info['template'];
}
// If 'arguments' have been defined previously, carry them forward.
// This should happen if a theme overrides a Drupal defined theme
// function, for example.
if (!isset($info['arguments']) && isset($cache[$hook])) {
$result[$hook]['arguments'] = $cache[$hook]['arguments'];
}
// Likewise with theme paths. These are used for template naming suggestions.
// Theme implementations can occur in multiple paths. Suggestions should follow.
if (!isset($info['theme paths']) && isset($cache[$hook])) {
$result[$hook]['theme paths'] = $cache[$hook]['theme paths'];
}
// Check for sub-directories.
$result[$hook]['theme paths'][] = isset($info['path']) ? $info['path'] : $path;
// Check for default _preprocess_ functions. Ensure arrayness.
if (!isset($info['preprocess functions']) || !is_array($info['preprocess functions'])) {
$info['preprocess functions'] = array();
$prefixes = array();
if ($type == 'module') {
// Default preprocessor prefix.
$prefixes[] = 'template';
// Add all modules so they can intervene with their own preprocessors. This allows them
// to provide preprocess functions even if they are not the owner of the current hook.
$prefixes += module_list();
}
elseif ($type == 'theme_engine') {
// Theme engines get an extra set that come before the normally named preprocessors.
$prefixes[] = $name .'_engine';
// The theme engine also registers on behalf of the theme. The theme or engine name can be used.
$prefixes[] = $name;
$prefixes[] = $theme;
}
else {
// This applies when the theme manually registers their own preprocessors.
$prefixes[] = $name;
}
foreach ($prefixes as $prefix) {
if (function_exists($prefix .'_preprocess')) {
$info['preprocess functions'][] = $prefix .'_preprocess';
}
if (function_exists($prefix .'_preprocess_'. $hook)) {
$info['preprocess functions'][] = $prefix .'_preprocess_'. $hook;
}
}
}
// Check for the override flag and prevent the cached preprocess functions from being used.
// This allows themes or theme engines to remove preprocessors set earlier in the registry build.
if (!empty($info['override preprocess functions'])) {
// Flag not needed inside the registry.
unset($result[$hook]['override preprocess functions']);
}
elseif (isset($cache[$hook]['preprocess functions']) && is_array($cache[$hook]['preprocess functions'])) {
$info['preprocess functions'] = array_merge($cache[$hook]['preprocess functions'], $info['preprocess functions']);
}
$result[$hook]['preprocess functions'] = $info['preprocess functions'];
}
// Merge the newly created theme hooks into the existing cache.
$cache = array_merge($cache, $result);
}
}
/**
* Rebuild the hook theme_registry cache.
*
* @param $theme
* The loaded $theme object.
* @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.
foreach (module_implements('theme') as $module) {
_theme_process_registry($cache, $module, 'module', $module, drupal_get_path('module', $module));
}
// Process each base theme.
foreach ($base_theme as $base) {
// If the 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);
return $cache;
}
/**
* Provides a list of currently available themes.
*
* If the database is active then it will be retrieved from the database.
* Otherwise it will retrieve a new list.
*
* @param $refresh
* Whether to reload the list of themes from the database.
* @return
* An array of the currently available themes.
*/
function list_themes($refresh = FALSE) {
static $list = array();
if ($refresh) {
$list = array();
}
if (empty($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 (db_is_active() && !defined('MAINTENANCE_MODE')) {
$result = db_query("SELECT * FROM {system} WHERE type = '%s'", 'theme');
while ($theme = db_fetch_object($result)) {
if (file_exists($theme->filename)) {
$theme->info = unserialize($theme->info);
$themes[] = $theme;
}
}
}
else {
// Scan the installation when the database should not be read.
$themes = _system_theme_data();
}
foreach ($themes as $theme) {
foreach ($theme->info['stylesheets'] as $media => $stylesheets) {
foreach ($stylesheets as $stylesheet => $path) {
if (file_exists($path)) {
$theme->stylesheets[$media][$stylesheet] = $path;
}
}
}
foreach ($theme->info['scripts'] as $script => $path) {
if (file_exists($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;
}
/**
* Generate the themed output.
*
* All requests for theme hooks must go through this function. It examines
* the request and routes it to the appropriate theme function. The theme
* registry is checked to determine which implementation to use, which may
* be a function or a template.
*
* If the implementation is a function, it is executed and its return value
* passed along.
*
* If the implementation is a template, the arguments are converted to a
* $variables array. This array is then modified by the module implementing
* the hook, theme engine (if applicable) and the theme. The following
* functions may be used to modify the $variables array. They are processed in
* this order when available:
*
* - template_preprocess(&$variables)
* This sets a default set of variables for all template implementations.
*
* - template_preprocess_HOOK(&$variables)
* This is the first preprocessor called specific to the hook; it should be
* implemented by the module that registers it.
*
* - MODULE_preprocess(&$variables)
* This will be called for all templates; it should only be used if there
* is a real need. It's purpose is similar to template_preprocess().
*
* - MODULE_preprocess_HOOK(&$variables)
* This is for modules that want to alter or provide extra variables for
* theming hooks not registered to itself. For example, if a module named
* "foo" wanted to alter the $submitted variable for the hook "node" a
* preprocess function of foo_preprocess_node() can be created to intercept
* and alter the variable.
*
* - ENGINE_engine_preprocess(&$variables)
* This function should only be implemented by theme engines and exists
* so that it can set necessary variables for all hooks.
*
* - ENGINE_engine_preprocess_HOOK(&$variables)
* This is the same as the previous function, but it is called for a single
* theming hook.
*
* - ENGINE_preprocess(&$variables)
* This is meant to be used by themes that utilize a theme engine. It is
* provided so that the preprocessor is not locked into a specific theme.
* This makes it easy to share and transport code but theme authors must be
* careful to prevent fatal re-declaration errors when using sub-themes that
* have their own preprocessor named exactly the same as its base theme. In
* the default theme engine (PHPTemplate), sub-themes will load their own
* template.php file in addition to the one used for its parent theme. This
* increases the risk for these errors. A good practice is to use the engine
* name for the base theme and the theme name for the sub-themes to minimize
* this possibility.
*
* - ENGINE_preprocess_HOOK(&$variables)
* The same applies from the previous function, but it is called for a
* specific hook.
*
* - THEME_preprocess(&$variables)
* These functions are based upon the raw theme; they should primarily be
* used by themes that do not use an engine or by sub-themes. It serves the
* same purpose as ENGINE_preprocess().
*
* - THEME_preprocess_HOOK(&$variables)
* The same applies from the previous function, but it is called for a
* specific hook.
*
* There are two special variables that these hooks can set:
* 'template_file' and 'template_files'. These will be merged together
* to form a list of 'suggested' alternate template files to use, in
* reverse order of priority. template_file will always be a higher
* priority than items in template_files. theme() will then look for these
* files, one at a time, and use the first one
* that exists.
* @param $hook
* The name of the theme function to call. May be an array, in which
* case the first hook that actually has an implementation registered
* will be used. This can be used to choose 'fallback' theme implementations,
* so that if the specific theme hook isn't implemented anywhere, a more
* generic one will be used. This can allow themes to create specific theme
* implementations for named objects.
* @param ...
* Additional arguments to pass along to the theme function.
* @return
* An HTML string that generates the themed output.
*/
function theme() {
$args = func_get_args();
$hook = array_shift($args);
static $hooks = NULL;
if (!isset($hooks)) {
init_theme();
$hooks = theme_get_registry();
}
if (is_array($hook)) {
foreach ($hook as $candidate) {
if (isset($hooks[$candidate])) {
break;
}
}
$hook = $candidate;
}
if (!isset($hooks[$hook])) {
return;
}
$info = $hooks[$hook];
global $theme_path;
$temp = $theme_path;
// point path_to_theme() to the currently used theme path:
$theme_path = $hooks[$hook]['theme path'];
// Include a file if the theme function or preprocess function is held elsewhere.
if (!empty($info['file'])) {
$include_file = $info['file'];
if (isset($info['path'])) {
$include_file = $info['path'] .'/'. $include_file;
}
include_once($include_file);
}
if (isset($info['function'])) {
// The theme call is a function.
$output = call_user_func_array($info['function'], $args);
}
else {
// The theme call is a template.
$variables = array(
'template_files' => array()
);
if (!empty($info['arguments'])) {
$count = 0;
foreach ($info['arguments'] as $name => $default) {
$variables[$name] = isset($args[$count]) ? $args[$count] : $default;
$count++;
}
}
// default render function and extension.
$render_function = 'theme_render_template';
$extension = '.tpl.php';
// Run through the theme engine variables, if necessary
global $theme_engine;
if (isset($theme_engine)) {
// If theme or theme engine is implementing this, it may have
// a different extension and a different renderer.
if ($hooks[$hook]['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 = $extension_function();
}
}
}
if (isset($info['preprocess functions']) && is_array($info['preprocess functions'])) {
// This construct ensures that we can keep a reference through
// call_user_func_array.
$args = array(&$variables, $hook);
foreach ($info['preprocess functions'] as $preprocess_function) {
if (function_exists($preprocess_function)) {
call_user_func_array($preprocess_function, $args);
}
}
}
// Get suggestions for alternate templates out of the variables
// that were set. This lets us dynamically choose a template
// from a list. The order is FILO, so this array is ordered from
// least appropriate first to most appropriate last.
$suggestions = array();
if (isset($variables['template_files'])) {
$suggestions = $variables['template_files'];
}
if (isset($variables['template_file'])) {
$suggestions[] = $variables['template_file'];
}
if ($suggestions) {
$template_file = drupal_discover_template($info['theme paths'], $suggestions, $extension);
}
if (empty($template_file)) {
$template_file = $hooks[$hook]['template'] . $extension;
if (isset($hooks[$hook]['path'])) {
$template_file = $hooks[$hook]['path'] .'/'. $template_file;
}
}
$output = $render_function($template_file, $variables);
}
// restore path_to_theme()
$theme_path = $temp;
return $output;
}
/**
* Choose which template file to actually render. These are all suggested
* templates from themes and modules. Theming implementations can occur on
* multiple levels. All paths are checked to account for this.
*/
function drupal_discover_template($paths, $suggestions, $extension = '.tpl.php') {
global $theme_engine;
// Loop through all paths and suggestions in FIFO order.
$suggestions = array_reverse($suggestions);
$paths = array_reverse($paths);
foreach ($suggestions as $suggestion) {
if (!empty($suggestion)) {
foreach ($paths as $path) {
if (file_exists($file = $path .'/'. $suggestion . $extension)) {
return $file;
}
}
}
}
}
/**
* Return the path to the currently selected theme.
*/
function path_to_theme() {
global $theme_path;
if (!isset($theme_path)) {
init_theme();
}
return $theme_path;
}
/**
* Find overridden theme functions. Called by themes and/or theme engines to
* easily discover 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 $templates
* The functions found, suitable for returning from hook_theme;
*/
function drupal_find_theme_functions($cache, $prefixes) {
$templates = array();
$functions = get_defined_functions();
foreach ($cache as $hook => $info) {
foreach ($prefixes as $prefix) {
if (!empty($info['pattern'])) {
$matches = preg_grep('/^'. $prefix .'_'. $info['pattern'] .'/', $functions['user']);
if ($matches) {
foreach ($matches as $match) {
$new_hook = str_replace($prefix .'_', '', $match);
$templates[$new_hook] = array(
'function' => $match,
'arguments' => $info['arguments'],
);
}
}
}
if (function_exists($prefix .'_'. $hook)) {
$templates[$hook] = array(
'function' => $prefix .'_'. $hook,
);
}
}
}
return $templates;
}
/**
* Find overridden theme templates. Called by themes and/or theme engines to
* easily discover 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) {
$templates = 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('.', '\.', $extension) .'$';
// Because drupal_system_listing works the way it does, we check for real
// templates separately from checking for patterns.
$files = drupal_system_listing($regex, $path, 'name', 0);
foreach ($files as $template => $file) {
// Ignore sub-theme templates for the current theme.
if (strpos($file->filename, str_replace($subtheme_paths, '', $file->filename)) !== 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])) {
$templates[$hook] = array(
'template' => $template,
'path' => dirname($file->filename),
);
}
}
$patterns = array_keys($files);
foreach ($cache as $hook => $info) {
if (!empty($info['pattern'])) {
// Transform _ in pattern to - to match file naming scheme
// for the purposes of searching.
$pattern = strtr($info['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.
$templates[strtr($file, '-', '_')] = array(
'template' => $file,
'path' => dirname($files[$match]->filename),
'arguments' => $info['arguments'],
);
}
}
}
}
return $templates;
}
/**
* Retrieve an associative array containing the settings for a theme.
*
* The final settings are arrived at by merging the default settings,
* the site-wide settings, and the settings defined for the specific theme.
* If no $key was specified, only the site-wide theme defaults are retrieved.
*
* The default values for each of settings are also defined in this function.
* To add new settings, add their default values here, and then add form elements
* to system_theme_settings() in system.module.
*
* @param $key
* The template/style value for a given theme.
*
* @return
* An associative array containing theme settings.
*/
function theme_get_settings($key = NULL) {
$defaults = array(
'mission' => '',
'default_logo' => 1,
'logo_path' => '',
'default_favicon' => 1,
'favicon_path' => '',
'primary_links' => 1,
'secondary_links' => 1,
'toggle_logo' => 1,
'toggle_favicon' => 1,
'toggle_name' => 1,
'toggle_search' => 1,
'toggle_slogan' => 0,
'toggle_mission' => 1,
'toggle_node_user_picture' => 0,
'toggle_comment_user_picture' => 0,
'toggle_primary_links' => 1,
'toggle_secondary_links' => 1,
);
if (module_exists('node')) {
foreach (node_get_types() as $type => $name) {
$defaults['toggle_node_info_'. $type] = 1;
}
}
$settings = array_merge($defaults, variable_get('theme_settings', array()));
if ($key) {
$settings = array_merge($settings, variable_get(str_replace('/', '_', 'theme_'. $key .'_settings'), array()));
}
// Only offer search box if search.module is enabled.
if (!module_exists('search') || !user_access('search content')) {
$settings['toggle_search'] = 0;
}
return $settings;
}
/**
* Retrieve a setting for the current theme.
* This function is designed for use from within themes & engines
* to determine theme settings made in the admin interface.
*
* Caches values for speed (use $refresh = TRUE to refresh cache)
*
* @param $setting_name
* The name of the setting to be retrieved.
*
* @param $refresh
* Whether to reload the cache of settings.
*
* @return
* The value of the requested setting, NULL if the setting does not exist.
*/
function theme_get_setting($setting_name, $refresh = FALSE) {
global $theme_key;
static $settings;
if (empty($settings) || $refresh) {
$settings = theme_get_settings($theme_key);
$themes = list_themes();
$theme_object = $themes[$theme_key];
if ($settings['mission'] == '') {
$settings['mission'] = variable_get('site_mission', '');
}
if (!$settings['toggle_mission']) {
$settings['mission'] = '';
}
if ($settings['toggle_logo']) {
if ($settings['default_logo']) {
$settings['logo'] = base_path() . dirname($theme_object->filename) .'/logo.png';
}
elseif ($settings['logo_path']) {
$settings['logo'] = base_path() . $settings['logo_path'];
}
}
if ($settings['toggle_favicon']) {
if ($settings['default_favicon']) {
if (file_exists($favicon = dirname($theme_object->filename) .'/favicon.ico')) {
$settings['favicon'] = base_path() . $favicon;
}
else {
$settings['favicon'] = base_path() .'misc/favicon.ico';
}
}
elseif ($settings['favicon_path']) {
$settings['favicon'] = base_path() . $settings['favicon_path'];
}
else {
$settings['toggle_favicon'] = FALSE;
}
}
}
return isset($settings[$setting_name]) ? $settings[$setting_name] : NULL;
}
/**
* Render a system default template, which is essentially a PHP template.
*
* @param $file
* The filename of the template to render.
* @param $variables
* A keyed array of variables that will appear in the output.
*
* @return
* The output generated by the template.
*/
function theme_render_template($file, $variables) {
extract($variables, EXTR_SKIP); // Extract the variables to a local namespace
ob_start(); // Start output buffering
include "./$file"; // Include the file
$contents = ob_get_contents(); // Get the contents of the buffer
ob_end_clean(); // End buffering and discard
return $contents; // Return the contents
}
/**
* @defgroup themeable Default theme implementations
* @{
* Functions and templates that present output to the user, and can be
* implemented by themes.
*
* Drupal's presentation layer is a pluggable system known as the theme
* layer. Each theme can take control over most of Drupal's output, and
* has complete control over the CSS.
*
* Inside Drupal, the theme layer is utilized by the use of the theme()
* function, which is passed the name of a component (the theme hook)
* and several arguments. For example, theme('table', $header, $rows);
* Additionally, the theme() function can take an array of theme
* hooks, which can be used to provide 'fallback' implementations to
* allow for more specific control of output. For example, the function:
* theme(array('table__foo', 'table'), $header, $rows) would look to see if
* 'table__foo' is registered anywhere; if it is not, it would 'fall back'
* to the generic 'table' implementation. This can be used to attach specific
* theme functions to named objects, allowing the themer more control over
* specific types of output.
*
* As of Drupal 6, every theme hook is required to be registered by the
* module that owns it, so that Drupal can tell what to do with it and
* to make it simple for themes to identify and override the behavior
* for these calls.
*
* The theme hooks are registered via hook_theme(), which returns an
* array of arrays with information about the hook. It describes the
* arguments the function or template will need, and provides
* defaults for the template in case they are not filled in. If the default
* implementation is a function, by convention it is named theme_HOOK().
*
* Each module should provide a default implementation for themes that
* it registers. This implementation may be either a function or a template;
* if it is a function it must be specified via hook_theme(). By convention,
* default implementations of theme hooks are named theme_HOOK. Default
* template implementations are stored in the module directory.
*
* Drupal's default template renderer is a simple PHP parsing engine that
* includes the template and stores the output. Drupal's theme engines
* can provide alternate template engines, such as XTemplate, Smarty and
* PHPTal. The most common template engine is PHPTemplate (included with
* Drupal and implemented in phptemplate.engine, which uses Drupal's default
* template renderer.
*
* In order to create theme-specific implementations of these hooks,
* themes can implement their own version of theme hooks, either as functions
* or templates. These implementations will be used instead of the default
* implementation. If using a pure .theme without an engine, the .theme is
* required to implement its own version of hook_theme() to tell Drupal what
* it is implementing; themes utilizing an engine will have their well-named
* theming functions automatically registered for them. While this can vary
* based upon the theme engine, the standard set by phptemplate is that theme
* functions should be named either phptemplate_HOOK or THEMENAME_HOOK. For
* example, for Drupal's default theme (Garland) to implement the 'table' hook,
* the phptemplate.engine would find phptemplate_table() or garland_table().
* The ENGINE_HOOK() syntax is preferred, as this can be used by sub-themes
* (which are themes that share code but use different stylesheets).
*
* The theme system is described and defined in theme.inc.
*
* @see theme()
* @see hook_theme()
*/
/**
* Formats text for emphasized display in a placeholder inside a sentence.
* Used automatically by t().
*
* @param $text
* The text to format (plain-text).
* @return
* The formatted text (html).
*/
function theme_placeholder($text) {
return '<em>'. check_plain($text) .'</em>';
}
/**
* Return a themed set of status and/or error messages. The messages are grouped
* by type.
*
* @param $display
* (optional) Set to 'status' or 'error' to display only messages of that type.
*
* @return
* A string containing the messages.
*/
function theme_status_messages($display = NULL) {
$output = '';
foreach (drupal_get_messages($display) as $type => $messages) {
$output .= "<div class=\"messages $type\">\n";
if (count($messages) > 1) {
$output .= " <ul>\n";
foreach ($messages as $message) {
$output .= ' <li>'. $message ."</li>\n";
}
$output .= " </ul>\n";
}
else {
$output .= $messages[0];
}
$output .= "</div>\n";
}
return $output;
}
/**
* Return a themed set of links.
*
* @param $links
* A keyed array of links to be themed.
* @param $attributes
* A keyed array of attributes
* @return
* A string containing an unordered list of links.
*/
function theme_links($links, $attributes = array('class' => 'links')) {
$output = '';
if (count($links) > 0) {
$output = '<ul'. drupal_attributes($attributes) .'>';
$num_links = count($links);
$i = 1;
foreach ($links as $key => $link) {
$class = $key;
// Add first, last and active classes to the list of links to help out themers.
if ($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()))) {
$class .= ' active';
}
$output .= '<li class="'. $class .'">';
if (isset($link['href'])) {
// Pass in $link as $options, they share the same keys.
$output .= l($link['title'], $link['href'], $link);
}
else if (!empty($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;
}
/**
* Return a themed image.
*
* @param $path
* Either the path of the image file (relative to base_path()) or a full URL.
* @param $alt
* The alternative text for text-based browsers.
* @param $title
* The title text is displayed when the image is hovered in some popular browsers.
* @param $attributes
* Associative array of attributes to be placed in the img tag.
* @param $getsize
* If set to TRUE, the image's dimension are fetched and added as width/height attributes.
* @return
* A string containing the image tag.
*/
function theme_image($path, $alt = '', $title = '', $attributes = NULL, $getsize = TRUE) {
if (!$getsize || (is_file($path) && (list($width, $height, $type, $image_attributes) = @getimagesize($path)))) {
$attributes = drupal_attributes($attributes);
$url = (url($path) == $path) ? $path : (base_path() . $path);
return '<img src="'. check_url($url) .'" alt="'. check_plain($alt) .'" title="'. check_plain($title) .'" '. (isset($image_attributes) ? $image_attributes : '') . $attributes .' />';
}
}
/**
* Return a themed breadcrumb trail.
*
* @param $breadcrumb
* An array containing the breadcrumb links.
* @return a string containing the breadcrumb output.
*/
function theme_breadcrumb($breadcrumb) {
if (!empty($breadcrumb)) {
return '<div class="breadcrumb">'. implode(' » ', $breadcrumb) .'</div>';
}
}
/**
* Return a themed help message.
*
* @return a string containing the helptext for the current page.
*/
function theme_help() {
if ($help = menu_get_active_help()) {
return '<div class="help">'. $help .'</div>';
}
}
/**
* Return a themed submenu, typically displayed under the tabs.
*
* @param $links
* An array of links.
*/
function theme_submenu($links) {
return '<div class="submenu">'. implode(' | ', $links) .'</div>';
}
/**
* Return a themed table.
*
* @param $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").
* - Any HTML attributes, such as "colspan", to apply to the column header cell.
* @param $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.
*
* 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:
* @verbatim
* $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' => 'funky'
* )
* );
* @endverbatim
*
* @param $attributes
* An array of HTML attributes to apply to the table tag.
* @param $caption
* A localized string to use for the <caption> tag.
* @return
* An HTML string representing the table.
*/
function theme_table($header, $rows, $attributes = array(), $caption = NULL) {
// Add sticky headers, if applicable.
if (count($header)) {
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.
$attributes['class'] = empty($attributes['class']) ? 'sticky-enabled' : ($attributes['class'] .' sticky-enabled');
}
$output = '<table'. drupal_attributes($attributes) .">\n";
if (isset($caption)) {
$output .= '<caption>'. $caption ."</caption>\n";
}
// Format the table header:
if (count($header)) {
$ts = tablesort_init($header);
// HTML requires that the thead tag has tr tags in it follwed by tbody
// tags. Using ternary operator to check and see if we have any rows.
$output .= (count($rows) ? ' <thead><tr>' : ' <tr>');
foreach ($header as $cell) {
$cell = tablesort_header($cell, $header, $ts);
$output .= _theme_table_cell($cell, TRUE);
}
// Using ternary operator to close the tags based on whether or not there are rows
$output .= (count($rows) ? " </tr></thead>\n" : "</tr>\n");
}
else {
$ts = array();
}
// Format the table rows:
if (count($rows)) {
$output .= "<tbody>\n";
$flip = array('even' => 'odd', 'odd' => 'even');
$class = 'even';
foreach ($rows as $number => $row) {
$attributes = array();
// Check if we're dealing with a simple or complex row
if (isset($row['data'])) {
foreach ($row as $key => $value) {
if ($key == 'data') {
$cells = $value;
}
else {
$attributes[$key] = $value;
}
}
}
else {
$cells = $row;
}
if (count($cells)) {
// Add odd/even class
$class = $flip[$class];
if (isset($attributes['class'])) {
$attributes['class'] .= ' '. $class;
}
else {
$attributes['class'] = $class;
}
// Build row
$output .= ' <tr'. drupal_attributes($attributes) .'>';
$i = 0;
foreach ($cells as $cell) {
$cell = tablesort_cell($cell, $header, $ts, $i++);
$output .= _theme_table_cell($cell);
}
$output .= " </tr>\n";
}
}
$output .= "</tbody>\n";
}
$output .= "</table>\n";
return $output;
}
/**
* Returns a header cell for tables that have a select all functionality.
*/
function theme_table_select_header_cell() {
drupal_add_js('misc/tableselect.js');
return array('class' => 'select-all');
}
/**
* Return a themed sort icon.
*
* @param $style
* Set to either asc or desc. This sets which icon to show.
* @return
* A themed sort icon.
*/
function theme_tablesort_indicator($style) {
if ($style == "asc") {
return theme('image', 'misc/arrow-asc.png', t('sort icon'), t('sort ascending'));
}
else {
return theme('image', 'misc/arrow-desc.png', t('sort icon'), t('sort descending'));
}
}
/**
* Return a themed box.
*
* @param $title
* The subject of the box.
* @param $content
* The content of the box.
* @param $region
* The region in which the box is displayed.
* @return
* A string containing the box output.
*/
function theme_box($title, $content, $region = 'main') {
$output = '<h2 class="title">'. $title .'</h2><div>'. $content .'</div>';
return $output;
}
/**
* Return a themed marker, useful for marking new or updated
* content.
*
* @param $type
* Number representing the marker type to display
* @see MARK_NEW, MARK_UPDATED, MARK_READ
* @return
* A string containing the marker.
*/
function theme_mark($type = MARK_NEW) {
global $user;
if ($user->uid) {
if ($type == MARK_NEW) {
return ' <span class="marker">'. t('new') .'</span>';
}
else if ($type == MARK_UPDATED) {
return ' <span class="marker">'. t('updated') .'</span>';
}
}
}
/**
* Return a themed list of items.
*
* @param $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.
* @param $title
* The title of the list.
* @param $attributes
* The attributes applied to the list element.
* @param $type
* The type of list to return (e.g. "ul", "ol")
* @return
* A string containing the list output.
*/
function theme_item_list($items = array(), $title = NULL, $type = 'ul', $attributes = NULL) {
$output = '<div class="item-list">';
if (isset($title)) {
$output .= '<h3>'. $title .'</h3>';
}
if (!empty($items)) {
$output .= "<$type". drupal_attributes($attributes) .'>';
$num_items = count($items);
foreach ($items as $i => $item) {
$attributes = array();
$children = array();
if (is_array($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) {
$data .= theme_item_list($children, NULL, $type, $attributes); // Render nested list
}
if ($i == 0) {
$attributes['class'] = empty($attributes['class']) ? 'first' : ($attributes['class'] .' first');
}
if ($i == $num_items - 1) {
$attributes['class'] = empty($attributes['class']) ? 'last' : ($attributes['class'] .' last');
}
$output .= '<li'. drupal_attributes($attributes) .'>'. $data ."</li>\n";
}
$output .= "</$type>";
}
$output .= '</div>';
return $output;
}
/**
* Returns code that emits the 'more help'-link.
*/
function theme_more_help_link($url) {
return '<div class="more-help-link">'. t('[<a href="@link">more help...</a>]', array('@link' => check_url($url))) .'</div>';
}
/**
* Return code that emits an XML icon.
*
* For most use cases, this function has been superseded by theme_feed_icon().
*
* @see theme_feed_icon()
* @param $url
* The url of the feed.
*/
function theme_xml_icon($url) {
if ($image = theme('image', 'misc/xml.png', t('XML feed'), t('XML feed'))) {
return '<a href="'. check_url($url) .'" class="xml-icon">'. $image .'</a>';
}
}
/**
* Return code that emits an feed icon.
*
* @param $url
* The url of the feed.
* @param $title
* A descriptive title of the feed.
*/
function theme_feed_icon($url, $title) {
if ($image = theme('image', 'misc/feed.png', t('Syndicate content'), $title)) {
return '<a href="'. check_url($url) .'" class="feed-icon">'. $image .'</a>';
}
}
/**
* Returns code that emits the 'more' link used on blocks.
*
* @param $url
* The url of the main page
* @param $title
* A descriptive verb for the link, like 'Read more'
*/
function theme_more_link($url, $title) {
return '<div class="more-link">'. t('<a href="@link" title="@title">more</a>', array('@link' => check_url($url), '@title' => $title)) .'</div>';
}
/**
* Execute hook_footer() which is run at the end of the page right before the
* close of the body tag.
*
* @param $main (optional)
* Whether the current page is the front page of the site.
* @return
* A string containing the results of the hook_footer() calls.
*/
function theme_closure($main = 0) {
$footer = module_invoke_all('footer', $main);
return implode("\n", $footer) . drupal_get_js('footer');
}
/**
* Return a set of blocks available for the current user.
*
* @param $region
* Which set of blocks to retrieve.
* @return
* A string containing the themed blocks for this region.
*/
function theme_blocks($region) {
$output = '';
if ($list = block_list($region)) {
foreach ($list as $key => $block) {
// $key == <i>module</i>_<i>delta</i>
$output .= theme('block', $block);
}
}
// Add any content assigned to this region through drupal_set_content() calls.
$output .= drupal_get_content($region);
return $output;
}
/**
* Format a username.
*
* @param $object
* The user object to format, usually returned from user_load().
* @return
* A string containing an HTML link to the user's page if the passed object
* suggests that this is a site user. Otherwise, only the username is returned.
*/
function theme_username($object) {
if ($object->uid && $object->name) {
// Shorten the name when it is too long or it will break many tables.
if (drupal_strlen($object->name) > 20) {
$name = drupal_substr($object->name, 0, 15) .'...';
}
else {
$name = $object->name;
}
if (user_access('access user profiles')) {
$output = l($name, 'user/'. $object->uid, array('attributes' => array('title' => t('View user profile.'))));
}
else {
$output = check_plain($name);
}
}
else if ($object->name) {
// Sometimes modules display content composed by people who are
// not registered members of the site (e.g. mailing list or news
// aggregator modules). This clause enables modules to display
// the true author of the content.
if (!empty($object->homepage)) {
$output = l($object->name, $object->homepage, array('rel' => 'nofollow'));
}
else {
$output = check_plain($object->name);
}
$output .= ' ('. t('not verified') .')';
}
else {
$output = variable_get('anonymous', t('Anonymous'));
}
return $output;
}
/**
* Return a themed progress bar.
*
* @param $percent
* The percentage of the progress.
* @param $message
* A string containing information to be displayed.
* @return
* A themed HTML string representing the progress bar.
*/
function theme_progress_bar($percent, $message) {
$output = '<div id="progress" class="progress">';
$output .= '<div class="bar"><div class="filled" style="width: '. $percent .'%"></div></div>';
$output .= '<div class="percentage">'. $percent .'%</div>';
$output .= '<div class="message">'. $message .'</div>';
$output .= '</div>';
return $output;
}
/**
* Create a standard indentation div. Used for drag and drop tables.
*
* @param $size
* Optional. The number of indentations to create.
* @return
* A string containing indentations.
*/
function theme_indentation($size = 1) {
$output = '';
for ($n = 0; $n < $size; $n++) {
$output .= '<div class="indentation"> </div>';
}
return $output;
}
/**
* @} End of "defgroup themeable".
*/
function _theme_table_cell($cell, $header = FALSE) {
$attributes = '';
if (is_array($cell)) {
$data = isset($cell['data']) ? $cell['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 $output;
}
/**
* Adds a default set of helper variables for preprocess functions and
* templates. This comes in before any other preprocess function which makes
* it possible to be used in default theme implementations (non-overriden
* theme functions).
*/
function template_preprocess(&$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();
// Set default variables that depend on the database.
$variables['is_admin'] = FALSE;
$variables['is_front'] = FALSE;
$variables['logged_in'] = FALSE;
if ($variables['db_is_active'] = db_is_active() && !defined('MAINTENANCE_MODE')) {
// Check for administrators.
if (user_access('access administration pages')) {
$variables['is_admin'] = TRUE;
}
// Flag front page status.
$variables['is_front'] = drupal_is_front_page();
// Tell all templates by which kind of user they're viewed.
$variables['logged_in'] = ($user->uid > 0);
// Provide user object to all templates
$variables['user'] = $user;
}
}
/**
* Process 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 them consistent.
*
* The $variables array contains the following arguments:
* - $content
* - $show_blocks
*
* @see page.tpl.php
*/
function template_preprocess_page(&$variables) {
// Add favicon
if (theme_get_setting('toggle_favicon')) {
drupal_set_html_head('<link rel="shortcut icon" href="'. check_url(theme_get_setting('favicon')) .'" type="image/x-icon" />');
}
global $theme;
// Populate all block regions.
$regions = system_region_list($theme);
// Load all region content assigned via blocks.
foreach (array_keys($regions) as $region) {
// Prevent left and right regions from rendering blocks when 'show_blocks' == FALSE.
if (!(!$variables['show_blocks'] && ($region == 'left' || $region == 'right'))) {
$blocks = theme('blocks', $region);
}
else {
$blocks = '';
}
// Assign region to a region variable.
isset($variables[$region]) ? $variables[$region] .= $blocks : $variables[$region] = $blocks;
}
// Set up layout variable.
$variables['layout'] = 'none';
if (!empty($variables['left'])) {
$variables['layout'] = 'left';
}
if (!empty($variables['right'])) {
$variables['layout'] = ($variables['layout'] == 'left') ? 'both' : 'right';
}
// Set mission when viewing the frontpage.
if (drupal_is_front_page()) {
$mission = filter_xss_admin(theme_get_setting('mission'));
}
// Construct page title
if (drupal_get_title()) {
$head_title = array(strip_tags(drupal_get_title()), variable_get('site_name', 'Drupal'));
}
else {
$head_title = array(variable_get('site_name', 'Drupal'));
if (variable_get('site_slogan', '')) {
$head_title[] = variable_get('site_slogan', '');
}
}
$variables['head_title'] = implode(' | ', $head_title);
$variables['base_path'] = base_path();
$variables['front_page'] = url();
$variables['breadcrumb'] = theme('breadcrumb', drupal_get_breadcrumb());
$variables['feed_icons'] = drupal_get_feeds();
$variables['footer_message'] = filter_xss_admin(variable_get('site_footer', FALSE));
$variables['head'] = drupal_get_html_head();
$variables['help'] = theme('help');
$variables['language'] = $GLOBALS['language'];
$variables['language']->dir = $GLOBALS['language']->direction ? 'rtl' : 'ltr';
$variables['logo'] = theme_get_setting('logo');
$variables['messages'] = $variables['show_messages'] ? theme('status_messages') : '';
$variables['mission'] = isset($mission) ? $mission : '';
$variables['primary_links'] = theme_get_setting('toggle_primary_links') ? menu_primary_links() : array();
$variables['secondary_links'] = theme_get_setting('toggle_secondary_links') ? menu_secondary_links() : array();
$variables['search_box'] = (theme_get_setting('toggle_search') ? drupal_get_form('search_theme_form') : '');
$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['css'] = drupal_add_css();
$variables['styles'] = drupal_get_css();
$variables['scripts'] = drupal_get_js();
$variables['tabs'] = theme('menu_local_tasks');
$variables['title'] = drupal_get_title();
// Closure should be filled last.
$variables['closure'] = theme('closure');
if ($node = menu_get_object()) {
$variables['node'] = $node;
}
// 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.).
$body_classes = array();
// Add a class that tells us whether we're on the front page or not.
$body_classes[] = $variables['is_front'] ? 'front' : 'not-front';
// Add a class that tells us whether the page is viewed by an authenticated user or not.
$body_classes[] = $variables['logged_in'] ? 'logged-in' : 'not-logged-in';
// Add arg(0) to make it possible to theme the page depending on the current page
// type (e.g. node, admin, user, etc.). To avoid illegal characters in the class,
// we're removing everything disallowed. We are not using 'a-z' as that might leave
// in certain international characters (e.g. German umlauts).
$body_classes[] = preg_replace('![^abcdefghijklmnopqrstuvwxyz0-9-_]+!s', '', 'page-'. form_clean_id(drupal_strtolower(arg(0))));
// If on an individual node page, add the node type.
if (isset($variables['node']) && $variables['node']->type) {
$body_classes[] = 'node-type-'. form_clean_id($variables['node']->type);
}
// Add information about the number of sidebars.
if ($variables['layout'] == 'both') {
$body_classes[] = 'two-sidebars';
}
elseif ($variables['layout'] == 'none') {
$body_classes[] = 'no-sidebars';
}
else {
$body_classes[] = 'one-sidebar sidebar-'. $variables['layout'];
}
// Implode with spaces.
$variables['body_classes'] = implode(' ', $body_classes);
// Build a list of suggested template files 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,
// http://www.example.com/node/1/edit would result in the following
// suggestions:
//
// page-node-edit.tpl.php
// page-node-1.tpl.php
// page-node.tpl.php
// page.tpl.php
$i = 0;
$suggestion = 'page';
$suggestions = array();
while ($arg = arg($i++)) {
$suggestions[] = $suggestion .'-'. $arg;
if (!is_numeric($arg)) {
$suggestion .= '-'. $arg;
}
}
if (drupal_is_front_page()) {
$suggestions[] = 'page-front';
}
if ($suggestions) {
$variables['template_files'] = $suggestions;
}
}
/**
* Process variables for node.tpl.php
*
* Most themes utilize their own copy of node.tpl.php. The default is located
* inside "modules/node/node.tpl.php". Look in there for the full list of
* variables.
*
* The $variables array contains the following arguments:
* - $node
* - $teaser
* - $page
*
* @see node.tpl.php
*/
function template_preprocess_node(&$variables) {
$node = $variables['node'];
if (module_exists('taxonomy')) {
$variables['taxonomy'] = taxonomy_link('taxonomy terms', $node);
}
else {
$variables['taxonomy'] = array();
}
if ($variables['teaser'] && $node->teaser) {
$variables['content'] = $node->teaser;
}
elseif (isset($node->body)) {
$variables['content'] = $node->body;
}
else {
$variables['content'] = '';
}
$variables['date'] = format_date($node->created);
$variables['links'] = !empty($node->links) ? theme('links', $node->links, array('class' => 'links inline')) : '';
$variables['name'] = theme('username', $node);
$variables['node_url'] = url('node/'. $node->nid);
$variables['terms'] = theme('links', $variables['taxonomy'], array('class' => 'links inline'));
$variables['title'] = check_plain($node->title);
// Flatten the node object's member fields.
$variables = array_merge((array)$node, $variables);
// Display info only on certain node types.
if (theme_get_setting('toggle_node_info_'. $node->type)) {
$variables['submitted'] = theme('node_submitted', $node);
$variables['picture'] = theme_get_setting('toggle_node_user_picture') ? theme('user_picture', $node) : '';
}
else {
$variables['submitted'] = '';
$variables['picture'] = '';
}
// Clean up name so there are no underscores.
$variables['template_files'][] = 'node-'. $node->type;
}
/**
* Process variables for block.tpl.php
*
* Prepare the values passed to the theme_block function to be passed
* into a pluggable template engine. Uses block properties to generate a
* series of template file suggestions. If none are found, the default
* block.tpl.php is used.
*
* Most themes utilize their own copy of block.tpl.php. The default is located
* inside "modules/system/block.tpl.php". Look in there for the full list of
* variables.
*
* The $variables array contains the following arguments:
* - $block
*
* @see block.tpl.php
*/
function template_preprocess_block(&$variables) {
static $block_counter = array();
// All blocks get an independent counter for each region.
if (!isset($block_counter[$variables['block']->region])) {
$block_counter[$variables['block']->region] = 1;
}
// Same with zebra striping.
$variables['block_zebra'] = ($block_counter[$variables['block']->region] % 2) ? 'odd' : 'even';
$variables['block_id'] = $block_counter[$variables['block']->region]++;
$variables['template_files'][] = 'block-'. $variables['block']->region;
$variables['template_files'][] = 'block-'. $variables['block']->module;
$variables['template_files'][] = 'block-'. $variables['block']->module .'-'. $variables['block']->delta;
}
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