/
theme.inc
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/
theme.inc
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<?php
// $Id: theme.inc,v 1.415.2.24 2009/06/18 12:04:04 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.
*
* @ingroup 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', 'base_theme_engine', 'theme', or 'base_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) {
$result = array();
$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' || $type == 'base_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_'. $hook;
}
if (!empty($info['original hook']) && function_exists($prefix .'_preprocess_'. $info['original hook'])) {
$info['preprocess functions'][] = $prefix .'_preprocess_'. $info['original hook'];
}
}
}
// Check for the override flag and prevent the cached preprocess functions from being used.
// This allows themes or theme engines to remove preprocessors set earlier in the registry build.
if (!empty($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'], $info['preprocess functions']);
}
elseif (isset($info['original hook']) && isset($cache[$info['original hook']]['preprocess functions']) && is_array($cache[$info['original hook']]['preprocess functions'])) {
$info['preprocess functions'] = array_merge($cache[$info['original 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, $result);
}
// Let themes have preprocess functions even if they didn't register a template.
if ($type == 'theme' || $type == 'base_theme') {
foreach ($cache as $hook => $info) {
// Check only if it's a template and not registered by the theme or engine.
if (!empty($info['template']) && empty($result[$hook])) {
if (!isset($info['preprocess functions'])) {
$cache[$hook]['preprocess functions'] = array();
}
if (function_exists($name .'_preprocess')) {
$cache[$hook]['preprocess functions'][] = $name .'_preprocess';
}
if (function_exists($name .'_preprocess_'. $hook)) {
$cache[$hook]['preprocess functions'][] = $name .'_preprocess_'. $hook;
}
// Ensure uniqueness.
$cache[$hook]['preprocess functions'] = array_unique($cache[$hook]['preprocess functions']);
}
}
}
}
/**
* 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 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);
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) {
$theme->stylesheets[$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 = $temp;
// Add final markup to the full page.
if ($hook == 'page' || $hook == 'book_export_html') {
$output = drupal_final_markup($output);
}
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;
// Remove slashes or null to prevent files from being included from
// an unexpected location (especially on Windows servers).
$extension = str_replace(array("/", "\\", "\0"), '', $extension);
// Loop through all paths and suggestions in FIFO order.
$suggestions = array_reverse($suggestions);
$paths = array_reverse($paths);
foreach ($suggestions as $suggestion) {
if (!empty($suggestion)) {
$suggestion = str_replace(array("/", "\\", "\0"), '', $suggestion);
foreach ($paths as $path) {
if (file_exists($file = $path .'/'. $suggestion . $extension)) {
return $file;
}
}
}
}
}
/**
* Return 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)) {
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'],
'original hook' => $hook,
);
}
}
}
if (function_exists($prefix .'_'. $hook)) {
$templates[$hook] = array(
'function' => $prefix .'_'. $hook,
);
// Ensure that the pattern is maintained from base themes to its sub-themes.
// Each sub-theme will have their functions scanned so the pattern must be
// held for subsequent runs.
if (isset($info['pattern'])) {
$templates[$hook]['pattern'] = $info['pattern'];
}
}
}
}
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),
);
}
// Ensure that the pattern is maintained from base themes to its sub-themes.
// Each sub-theme will have their templates scanned so the pattern must be
// held for subsequent runs.
if (isset($cache[$hook]['pattern'])) {
$templates[$hook]['pattern'] = $cache[$hook]['pattern'];
}
}
$patterns = array_keys($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'],
'original hook' => $hook,
);
}
}
}
}
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;
}
}
}