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"; $output['debug_prefix'] .= "\n"; // If there are theme suggestions, reverse the array so more specific // suggestions are shown first. if (!empty($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"; } $output['debug_info'] .= "\n\n"; $output['debug_suffix'] .= "\n\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) { $output .= "
\n"; if (!empty($status_heading[$type])) { $output .= '

' . $status_heading[$type] . "

\n"; } if (count($messages) > 1) { $output .= " \n"; } else { $output .= reset($messages); } $output .= "
\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 '' . ($variables['options']['html'] ? $variables['text'] : check_plain($variables['text'])) . ''; } /** * 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 * 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']) . ''; } $output .= ''; $num_links = count($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'] == '' && drupal_is_front_page())) && (empty($link['language']) || $link['language']->language == $language_url->language)) { $class[] = 'active'; } $output .= ' $class)) . '>'; if (isset($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 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 .= '' . $link['title'] . ''; } $i++; $output .= "\n"; } $output .= ''; } 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 ''; } /** * 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 = '

' . t('You are here') . '

'; $output .= '
' . implode(' ยป ', $breadcrumb) . '
'; 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 * 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 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'; } $output = '\n"; if (isset($caption)) { $output .= '' . $caption . "\n"; } // Format the table columns: if (!empty($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 .= ' '; $i = 0; foreach ($cols as $col) { $output .= ' '; } $output .= " \n"; } else { $output .= ' \n"; } } } // Add the 'empty' row message if available. if (empty($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) ? ' ' : ' '); 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) ? " \n" : "\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 .= ' '; $i = 0; foreach ($cells as $cell) { $cell = tablesort_cell($cell, $header, $ts, $i++); $output .= _theme_table_cell($cell); } $output .= " \n"; } } $output .= "\n"; } $output .= "\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 ($type == MARK_NEW) { return ' ' . t('new') . ''; } elseif ($type == MARK_UPDATED) { return ' ' . t('updated') . ''; } } } /** * 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. $output = '
'; if (isset($title) && $title !== '') { $output .= '

' . $title . '

'; } 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 .= '' . $data . "\n"; } $output .= ""; } $output .= '
'; 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 '
' . l(t('More help'), $variables['url']) . '
'; } /** * 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 .= '\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 '
' . l(t('More'), $variables['url'], array('attributes' => array('title' => $variables['title']))) . '
'; } /** * 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 = '' . $variables['name'] . $variables['extra'] . ''; } 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 = '
'; $output .= '
'; $output .= '
' . $variables['percent'] . '%
'; $output .= '
' . $variables['message'] . '
'; $output .= '
'; 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 .= '
 
'; } 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) { $output = "$data"; } else { $output = "$data"; } 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("/", "\\", "\0", '-'), array('', '', '', '_'), $arg); // The percent acts as a wildcard for numeric arguments since // asterisks are not valid filename characters on many filesystems. if (is_numeric($arg)) { $suggestions[] = $prefix . $delimiter . '%'; } $suggestions[] = $prefix . $delimiter . $arg; if (!is_numeric($arg)) { $prefix .= $delimiter . $arg; } } if (drupal_is_front_page()) { // Front templates should be based on root only, not prefixed arguments. $suggestions[] = $base . $delimiter . 'front'; } return $suggestions; } /** * Process variables for maintenance-page.tpl.php. * * The variables array generated here is a mirror of * template_preprocess_page(). This preprocessor will run its course when * theme_maintenance_page() is invoked. An alternate template file of * maintenance-page--offline.tpl.php can be used when the database is offline to * hide errors and completely replace the content. * * The $variables array contains the following arguments: * - $content * * @see maintenance-page.tpl.php */ function template_preprocess_maintenance_page(&$variables) { // Add favicon if (theme_get_setting('toggle_favicon')) { $favicon = theme_get_setting('favicon'); $type = theme_get_setting('favicon_mimetype'); drupal_add_html_head_link(array('rel' => 'shortcut icon', 'href' => drupal_strip_dangerous_protocols($favicon), 'type' => $type)); } global $theme; // Retrieve the theme data to list all available regions. $theme_data = list_themes(); $regions = $theme_data[$theme]->info['regions']; // Get all region content set with drupal_add_region_content(). foreach (array_keys($regions) as $region) { // Assign region to a region variable. $region_content = drupal_get_region_content($region); isset($variables[$region]) ? $variables[$region] .= $region_content : $variables[$region] = $region_content; } // Setup layout variable. $variables['layout'] = 'none'; if (!empty($variables['sidebar_first'])) { $variables['layout'] = 'first'; } if (!empty($variables['sidebar_second'])) { $variables['layout'] = ($variables['layout'] == 'first') ? 'both' : 'second'; } // Construct page title if (drupal_get_title()) { $head_title = array( 'title' => strip_tags(drupal_get_title()), 'name' => variable_get('site_name', 'Drupal'), ); } else { $head_title = array('name' => variable_get('site_name', 'Drupal')); if (variable_get('site_slogan', '')) { $head_title['slogan'] = variable_get('site_slogan', ''); } } // set the default language if necessary $language = isset($GLOBALS['language']) ? $GLOBALS['language'] : language_default(); $variables['head_title_array'] = $head_title; $variables['head_title'] = implode(' | ', $head_title); $variables['base_path'] = base_path(); $variables['front_page'] = url(); $variables['breadcrumb'] = ''; $variables['feed_icons'] = ''; $variables['help'] = ''; $variables['language'] = $language; $variables['language']->dir = $language->direction ? 'rtl' : 'ltr'; $variables['logo'] = theme_get_setting('logo'); $variables['messages'] = $variables['show_messages'] ? theme('status_messages') : ''; $variables['main_menu'] = array(); $variables['secondary_menu'] = array(); $variables['site_name'] = (theme_get_setting('toggle_name') ? variable_get('site_name', 'Drupal') : ''); $variables['site_slogan'] = (theme_get_setting('toggle_slogan') ? variable_get('site_slogan', '') : ''); $variables['tabs'] = ''; $variables['title'] = drupal_get_title(); // Compile a list of classes that are going to be applied to the body element. $variables['classes_array'][] = 'in-maintenance'; if (isset($variables['db_is_active']) && !$variables['db_is_active']) { $variables['classes_array'][] = 'db-offline'; } if ($variables['layout'] == 'both') { $variables['classes_array'][] = 'two-sidebars'; } elseif ($variables['layout'] == 'none') { $variables['classes_array'][] = 'no-sidebars'; } else { $variables['classes_array'][] = 'one-sidebar sidebar-' . $variables['layout']; } // Dead databases will show error messages so supplying this template will // allow themers to override the page and the content completely. if (isset($variables['db_is_active']) && !$variables['db_is_active']) { $variables['theme_hook_suggestion'] = 'maintenance_page__offline'; } } /** * Theme process function for theme_maintenance_field(). * * The variables array generated here is a mirror of template_process_html(). * This processor will run its course when theme_maintenance_page() is invoked. * * @see maintenance-page.tpl.php * @see template_process_html() */ function template_process_maintenance_page(&$variables) { $variables['head'] = drupal_get_html_head(); $variables['css'] = drupal_add_css(); $variables['styles'] = drupal_get_css(); $variables['scripts'] = drupal_get_js(); } /** * Preprocess variables for region.tpl.php * * Prepares the values passed to the theme_region function to be passed into a * pluggable template engine. Uses the region name to generate a template file * suggestions. If none are found, the default region.tpl.php is used. * * @see drupal_region_class() * @see region.tpl.php */ function template_preprocess_region(&$variables) { // Create the $content variable that templates expect. $variables['content'] = $variables['elements']['#children']; $variables['region'] = $variables['elements']['#region']; $variables['classes_array'][] = drupal_region_class($variables['region']); $variables['theme_hook_suggestions'][] = 'region__' . $variables['region']; } /** * Preprocesses variables for theme_username(). * * Modules that make any changes to variables like 'name' or 'extra' must insure * that the final string is safe to include directly in the output by using * check_plain() or filter_xss(). * * @see template_process_username() */ function template_preprocess_username(&$variables) { $account = $variables['account']; $variables['extra'] = ''; if (empty($account->uid)) { $variables['uid'] = 0; if (theme_get_setting('toggle_comment_user_verification')) { $variables['extra'] = ' (' . t('not verified') . ')'; } } else { $variables['uid'] = (int) $account->uid; } // Set the name to a formatted name that is safe for printing and // that won't break tables by being too long. Keep an unshortened, // unsanitized version, in case other preprocess functions want to implement // their own shortening logic or add markup. If they do so, they must ensure // that $variables['name'] is safe for printing. $name = $variables['name_raw'] = format_username($account); if (drupal_strlen($name) > 20) { $name = drupal_substr($name, 0, 15) . '...'; } $variables['name'] = check_plain($name); $variables['profile_access'] = user_access('access user profiles'); $variables['link_attributes'] = array(); // Populate link path and attributes if appropriate. if ($variables['uid'] && $variables['profile_access']) { // We are linking to a local user. $variables['link_attributes'] = array('title' => t('View user profile.')); $variables['link_path'] = 'user/' . $variables['uid']; } elseif (!empty($account->homepage)) { // Like the 'class' attribute, the 'rel' attribute can hold a // space-separated set of values, so initialize it as an array to make it // easier for other preprocess functions to append to it. $variables['link_attributes'] = array('rel' => array('nofollow')); $variables['link_path'] = $account->homepage; $variables['homepage'] = $account->homepage; } // We do not want the l() function to check_plain() a second time. $variables['link_options']['html'] = TRUE; // Set a default class. $variables['attributes_array'] = array('class' => array('username')); } /** * Processes variables for theme_username(). * * @see template_preprocess_username() */ function template_process_username(&$variables) { // Finalize the link_options array for passing to the l() function. // This is done in the process phase so that attributes may be added by // modules or the theme during the preprocess phase. if (isset($variables['link_path'])) { // $variables['attributes_array'] contains attributes that should be applied // regardless of whether a link is being rendered or not. // $variables['link_attributes'] contains attributes that should only be // applied if a link is being rendered. Preprocess functions are encouraged // to use the former unless they want to add attributes on the link only. // If a link is being rendered, these need to be merged. Some attributes are // themselves arrays, so the merging needs to be recursive. $variables['link_options']['attributes'] = array_merge_recursive($variables['link_attributes'], $variables['attributes_array']); } }