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<?php
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/**
* @file
* CTools primary module file.
*
* Most of the CTools tools are in their own .inc files. This contains
* nothing more than a few convenience functions and some hooks that
* must be implemented in the module file.
*/
define('CTOOLS_API_VERSION', '2.0-alpha1');
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/**
* Test the CTools API version.
*
* This function can always be used to safely test if CTools has the minimum
* API version that your module can use. It can also try to protect you from
* running if the CTools API version is too new, but if you do that you need
* to be very quick about watching CTools API releases and release new versions
* of your software as soon as the new release is made, or people might end up
* updating CTools and having your module shut down without any recourse.
*
* It is recommended that every hook of your module that might use CTools or
* might lead to a use of CTools be guarded like this:
*
* @code
* if (!module_invoke('ctools', 'api_version', '1.0')) {
* return;
* }
* @endcode
*
* Note that some hooks such as _menu() or _theme() must return an array().
*
* You can use it in your hook_requirements to report this error condition
* like this:
*
* @code
* define('MODULENAME_MINIMUM_CTOOLS_API_VERSION', '1.0');
* define('MODULENAME_MAXIMUM_CTOOLS_API_VERSION', '1.1');
*
* function MODULENAME_requirements($phase) {
* $requirements = array();
* if (!module_invoke('ctools', 'api_version', MODULENAME_MINIMUM_CTOOLS_API_VERSION, MODULENAME_MAXIMUM_CTOOLS_API_VERSION)) {
* $requirements['MODULENAME_ctools'] = array(
* 'title' => $t('MODULENAME required Chaos Tool Suite (CTools) API Version'),
* 'value' => t('Between @a and @b', array('@a' => MODULENAME_MINIMUM_CTOOLS_API_VERSION, '@b' => MODULENAME_MAXIMUM_CTOOLS_API_VERSION)),
* 'severity' => REQUIREMENT_ERROR,
* );
* }
* return $requirements;
* }
* @endcode
*
* Please note that the version is a string, not an floating point number.
* This will matter once CTools reaches version 1.10.
*
* A CTools API changes history will be kept in API.txt. Not every new
* version of CTools will necessarily update the API version.
* @param $minimum
* The minimum version of CTools necessary for your software to run with it.
* @param $maximum
* The maximum version of CTools allowed for your software to run with it.
*/
function ctools_api_version($minimum, $maximum = NULL) {
if (version_compare(CTOOLS_API_VERSION, $minimum, '<')) {
return FALSE;
}
if (isset($maximum) && version_compare(CTOOLS_API_VERSION, $maximum, '>')) {
return FALSE;
}
return TRUE;
}
// -----------------------------------------------------------------------
// General utility functions
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/**
* Include .inc files as necessary.
*
* This fuction is helpful for including .inc files for your module. The
* general case is including ctools funcitonality like this:
*
* @code
* ctools_include('plugins');
* @endcode
*
* Similar funcitonality can be used for other modules by providing the $module
* and $dir arguments like this:
*
* @code
* // include mymodule/includes/import.inc
* ctools_include('import', 'mymodule');
* // include mymodule/plugins/foobar.inc
* ctools_include('foobar', 'mymodule', 'plugins');
* @endcode
*
* @param $file
* The base file name to be included.
* @param $module
* Optional module containing the include.
* @param $dir
* Optional subdirectory containing the include file.
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*/
function ctools_include($file, $module = 'ctools', $dir = 'includes') {
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static $used = array();
if (!isset($used[$module][$dir][$file])) {
require_once DRUPAL_ROOT . '/' . drupal_get_path('module', $module) . "/$dir/$file.inc";
$used[$module][$dir][$file] = true;
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}
}
* Provide the proper path to an image as necessary.
*
* This helper function is used by ctools but can also be used in other
* modules in the same way as explained in the comments of ctools_include.
*
* @param $image
* The base file name (with extension) of the image to be included.
* @param $module
* Optional module containing the include.
* @param $dir
* Optional subdirectory containing the include file.
function ctools_image_path($image, $module = 'ctools', $dir = 'images') {
return drupal_get_path('module', $module) . "/$dir/" . $image;
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/**
* Include css files as necessary.
*
* This helper function is used by ctools but can also be used in other
* modules in the same way as explained in the comments of ctools_include.
*
* @param $file
* The base file name to be included.
* @param $module
* Optional module containing the include.
* @param $dir
* Optional subdirectory containing the include file.
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*/
function ctools_add_css($file, $module = 'ctools', $dir = 'css') {
drupal_add_css(drupal_get_path('module', $module) . "/$dir/$file.css");
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}
* Include js files as necessary.
*
* This helper function is used by ctools but can also be used in other
* modules in the same way as explained in the comments of ctools_include.
*
* @param $file
* The base file name to be included.
* @param $module
* Optional module containing the include.
* @param $dir
* Optional subdirectory containing the include file.
function ctools_add_js($file, $module = 'ctools', $dir = 'js') {
drupal_add_js(drupal_get_path('module', $module) . "/$dir/$file.js");
}
* Format a javascript file name for use with $form['#attached']['js'].
* This helper function is used by ctools but can also be used in other
* modules in the same way as explained in the comments of ctools_include.
*
* @code
* $form['#attached']['js'] = array(ctools_attach_js('auto-submit'));
* @endcode
* @param $file
* The base file name to be included.
* @param $module
* Optional module containing the include.
* @param $dir
* Optional subdirectory containing the include file.
function ctools_attach_js($file, $module = 'ctools', $dir = 'js') {
return drupal_get_path('module', $module) . "/$dir/$file.js";
* Get a list of roles in the system.
* @return
* An array of role names keyed by role ID.
function ctools_get_roles() {
static $roles = NULL;
if (!isset($roles)) {
$roles = user_roles(TRUE);
unset($roles[DRUPAL_AUTHENTICATED_RID]);
return $roles;
/*
* Break x,y,z and x+y+z into an array. Numeric only.
*
* @param $str
* The string to parse.
*
* @return $object
* An object containing
* - operator: Either 'and' or 'or'
* - value: An array of numeric values.
*/
function ctools_break_phrase($str) {
$object = new stdClass();
if (preg_match('/^([0-9]+[+ ])+[0-9]+$/', $str)) {
// The '+' character in a query string may be parsed as ' '.
$object->operator = 'or';
$object->value = preg_split('/[+ ]/', $str);
}
else if (preg_match('/^([0-9]+,)*[0-9]+$/', $str)) {
$object->operator = 'and';
$object->value = explode(',', $str);
// Keep an 'error' value if invalid strings were given.
if (!empty($str) && (empty($object->value) || !is_array($object->value))) {
$object->value = array(-1);
$object->invalid_input = TRUE;
return $object;
if (empty($object->value)) {
$object->value = array();
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// Doubly ensure that all values are numeric only.
foreach ($object->value as $id => $value) {
$object->value[$id] = intval($value);
}
return $object;
}
/**
* Set a token/value pair to be replaced later in the request, specifically in
* ctools_preprocess_page().
*
* @param $token
* The token to be replaced later, during page rendering. This should
* ideally be a string inside of an HTML comment, so that if there is
* no replacement, the token will not render on the page.
* @param $type
* The type of the token. Can be either 'variable', which will pull data
* directly from the page variables
* @param $argument
* If $type == 'variable' then argument should be the key to fetch from
* the $variables. If $type == 'callback' then it should either be the
* callback, or an array that will be sent to call_user_func_array().
*
* @return
* A array of token/variable names to be replaced.
*/
function ctools_set_page_token($token = NULL, $type = NULL, $argument = NULL) {
static $tokens = array();
if (isset($token)) {
$tokens[$token] = array($type, $argument);
return $tokens;
/**
* Easily set a token from the page variables.
*
* This function can be used like this:
* $token = ctools_set_variable_token('tabs');
*
* $token will then be a simple replacement for the 'tabs' about of the
* variables available in the page template.
*/
function ctools_set_variable_token($token) {
$string = '<!-- ctools-page-' . $token . ' -->';
ctools_set_page_token($string, 'variable', $token);
return $string;
}
* Easily set a token from the page variables.
* This function can be used like this:
* $token = ctools_set_variable_token('id', 'mymodule_myfunction');
function ctools_set_callback_token($token, $callback) {
$string = '<!-- ctools-page-' . $token . ' -->';
ctools_set_page_token($string, 'callback', $callback);
return $string;
}
// -----------------------------------------------------------------------
// Drupal core hooks
/**
* Implement hook_init to keep our global CSS at the ready.
*/
function ctools_init() {
ctools_add_css('ctools');
// If we are sure that CTools' AJAX is in use, change the error handling.
if (!empty($_REQUEST['ctools_ajax'])) {
ini_set('display_errors', 0);
register_shutdown_function('ctools_shutdown_handler');
}
// Clear plugin cache on the module page submit.
if ($_GET['q'] == 'admin/modules/list/confirm' && !empty($_POST)) {
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cache_clear_all('ctools_plugin_files:', 'cache', TRUE);
}
}
/**
* Shutdown handler used during ajax operations to help catch fatal errors.
*/
function ctools_shutdown_handler() {
if (function_exists('error_get_last') AND ($error = error_get_last())){
switch($error['type']){
case E_ERROR:
case E_CORE_ERROR:
case E_COMPILE_ERROR:
case E_USER_ERROR:
// Do this manually because including files here is dangerous.
$commands = array(
array(
'command' => 'alert',
'title' => t('Error'),
'text' => t('Unable to complete operation. Fatal error in @file on line @line: @message', array(
'@file' => $error['file'],
'@line' => $error['line'],
'@message' => $error['message'],
)),
),
);
// Change the status code so that the client will read the AJAX returned.
header('HTTP/1.1 200 OK');
drupal_json($commands);
}
* Implements hook_theme().
*/
function ctools_theme() {
ctools_include('utility');
$items = array();
_ctools_passthrough($items, 'theme');
return $items;
}
/**
* Implements hook_menu().
function ctools_menu() {
ctools_include('utility');
$items = array();
_ctools_passthrough($items, 'menu');
return $items;
}
* Implementation of hook_cron. Clean up old caches.
*/
function ctools_cron() {
ctools_include('utility');
_ctools_passthrough($items, 'cron');
}
/**
* Ensure the CTools CSS cache is flushed whenever hook_flush_caches is invoked.
function ctools_flush_caches() {
// Do not actually flush caches if running on cron. Drupal uses this hook
// in an inconsistent fashion and it does not necessarily mean to *flush*
// caches when running from cron. Instead it's just getting a list of cache
// tables and may not do any flushing.
if (variable_get('cron_semaphore', FALSE)) {
return;
ctools_include('css');
ctools_css_flush_caches();
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/**
* Provide a search form with a different id so that form_alters will miss it
* and thus not get advanced search settings.
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*/
function ctools_forms() {
$forms['ctools_search_form']= array(
'callback' => 'search_form',
);
return $forms;
}
/**
* Implementation of hook_file_download()
*
* When using the private file system, we have to let Drupal know it's ok to
* download CSS and image files from our temporary directory.
*/
function ctools_file_download($filepath) {
if (strpos($filepath, 'ctools') === 0) {
$mime = file_get_mimetype($filepath);
// For safety's sake, we allow only text and images.
if (strpos($mime, 'text') === 0 || strpos($mime, 'image') === 0) {
return array('Content-type:' . $mime);
}
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}
}
/**
* Implements hook_registry_files_alter().
*
* Alter the registry of files to automagically include all classes in
* class-based plugins.
*/
function ctools_registry_files_alter(&$files, $indexed_modules) {
ctools_include('registry');
return _ctools_registry_files_alter($files, $indexed_modules);
}
// -----------------------------------------------------------------------
// CTools hook implementations.
/**
* Implementation of hook_ctools_plugin_directory() to let the system know
* where all our own plugins are.
*/
function ctools_ctools_plugin_directory($owner, $plugin_type) {
if ($owner == 'ctools') {
return 'plugins/' . $plugin_type;
}
}
/**
* Implements hook_ctools_plugin_type().
function ctools_ctools_plugin_type() {
ctools_include('utility');
$items = array();
// Add all the plugins that have their own declaration space elsewhere.
_ctools_passthrough($items, 'plugin-type');
return $items;
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}
// -----------------------------------------------------------------------
// Drupal theme preprocess hooks that must be in the .module file.
/**
* A theme preprocess function to automatically allow panels-based node
* templates based upon input when the panel was configured.
*/
function ctools_preprocess_node(&$vars) {
// The 'panel_identifier' attribute of the node is added when the pane is
// rendered.
if (!empty($vars['node']->panel_identifier)) {
$vars['panel_identifier'] = check_plain($vars['node']->panel_identifier);
$vars['template_files'][] = 'node-panel-' . check_plain($vars['node']->panel_identifier);
}
}
/**
* A theme preprocess function to allow content type plugins to use page
* template variables which are not yet available when the content type is
* rendered.
*/
function ctools_preprocess_page(&$variables) {
$tokens = ctools_set_page_token();
if (!empty($tokens)) {
foreach ($tokens as $token => $key) {
list($type, $argument) = $key;
switch ($type) {
case 'variable':
$tokens[$token] = isset($variables[$argument]) ? $variables[$argument] : '';
break;
case 'callback':
if (is_string($argument) && function_exists($argument)) {
$tokens[$token] = $argument($variables);
}
if (is_array($argument) && function_exists($argument[0])) {
$function = array_shift($argument);
$argument = array_merge(array(&$variables), $argument);
$tokens[$token] = call_user_func_array($function, $argument);
}
break;
}
}
$variables['content'] = strtr($variables['content'], $tokens);
}
}
// -----------------------------------------------------------------------
// Menu callbacks that must be in the .module file.
/**
* Determine if the current user has access via a plugin.
*
* This function is meant to be embedded in the Drupal menu system, and
* therefore is in the .module file since sub files can't be loaded, and
* takes arguments a little bit more haphazardly than ctools_access().
*
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* @param $access
* An access control array which contains the following information:
* - 'logic': and or or. Whether all tests must pass or one must pass.
* - 'plugins': An array of access plugins. Each contains:
* - - 'name': The name of the plugin
* - - 'settings': The settings from the plugin UI.
* - - 'context': Which context to use.
* @param ...
* zero or more context arguments generated from argument plugins. These
* contexts must have an 'id' attached to them so that they can be
* properly associated. The argument plugin system should set this, but
* if the context is coming from elsewhere it will need to be set manually.
*
* @return
* TRUE if access is granted, false if otherwise.
*/
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function ctools_access_menu($access) {
// Short circuit everything if there are no access tests.
if (empty($access['plugins'])) {
return TRUE;
}
$contexts = array();
foreach (func_get_args() as $arg) {
if (is_object($arg) && get_class($arg) == 'ctools_context') {
$contexts[$arg->id] = $arg;
}
}
ctools_include('context');
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return ctools_access($access, $contexts);
* Determine if the current user has access via checks to multiple different
* permissions.
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*
* This function is a thin wrapper around user_access that allows multiple
* permissions to be easily designated for use on, for example, a menu callback.
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*
* @param ...
* An indexed array of zero or more permission strings to be checked by
* user_access().
*
* @return
* Iff all checks pass will this function return TRUE. If an invalid argument
* is passed (e.g., not a string), this function errs on the safe said and
* returns FALSE.
function ctools_access_multiperm() {
foreach (func_get_args() as $arg) {
if (!is_string($arg) || !user_access($arg)) {
return FALSE;
}
return TRUE;
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/**
* Check to see if the incoming menu item is js capable or not.
*
* This can be used as %ctools_js as part of a path in hook menu. CTools
* ajax functions will automatically change the phrase 'nojs' to 'ajax'
* when it attaches ajax to a link. This can be used to autodetect if
* that happened.
*/
function ctools_js_load($js) {
if ($js == 'ajax') {
return TRUE;
}
return 0;
}
/**
* Menu _load hook.
*
* This function will be called to load an object as a replacement for
* %ctools_export_ui in menu paths.
*/
function ctools_export_ui_load($item_name, $plugin_name) {
$return = &drupal_static(__FUNCTION__, FALSE);
if (!$return) {
ctools_include('export-ui');
$plugin = ctools_get_export_ui($plugin_name);
if ($plugin) {
// Get the load callback.
$item = ctools_export_crud_load($plugin['schema'], $item_name);
return empty($item) ? FALSE : $item;
}
}
return $return;
}
// -----------------------------------------------------------------------
// Caching callbacks on behalf of export-ui.
/**
* Menu access callback for various tasks of export-ui.
*/
function ctools_export_ui_task_access($plugin_name, $op, $item = NULL) {
ctools_include('export-ui');
$plugin = ctools_get_export_ui($plugin_name);
$handler = ctools_export_ui_get_handler($plugin);
if ($handler) {
return $handler->access($op, $item);
}
// Deny access if the handler cannot be found.
return FALSE;
* Cache callback on behalf of ctools_export_ui.
function ctools_export_ui_context_cache_get($plugin_name, $key) {
dsm('should not be called!');
return;
* Cache callback on behalf of ctools_export_ui.
function ctools_export_ui_context_cache_set($plugin_name, $key, $item) {
dsm('should not be called!');
return;
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/**
* Callback for access control ajax form on behalf of export ui.
*
* Returns the cached access config and contexts used.
* Note that this is assuming that access will be in $item->access -- if it
* is not, an export UI plugin will have to make its own callbacks.
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*/
function ctools_export_ui_ctools_access_get($argument) {
ctools_include('export-ui');
list($plugin_name, $key) = explode(':', $argument, 2);
$plugin = ctools_get_export_ui($plugin_name);
$handler = ctools_export_ui_get_handler($plugin);
if ($handler) {
ctools_include('context');
$item = $handler->edit_cache_get($key);
if (!$item) {
$item = ctools_export_crud_load($handler->plugin['schema'], $key);
}
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$contexts = ctools_context_load_contexts($item);
return array($item->access, $contexts);
}
}
/**
* Callback for access control ajax form on behalf of export ui
*
* Returns the cached access config and contexts used.
* Note that this is assuming that access will be in $item->access -- if it
* is not, an export UI plugin will have to make its own callbacks.
*/
function ctools_export_ui_ctools_access_set($argument, $access) {
ctools_include('export-ui');
list($plugin_name, $key) = explode(':', $argument, 2);
$plugin = ctools_get_export_ui($plugin_name);
$handler = ctools_export_ui_get_handler($plugin);
if ($handler) {
ctools_include('context');
$item = $handler->edit_cache_get($key);
if (!$item) {
$item = ctools_export_crud_load($handler->plugin['schema'], $key);
}
$item->access = $access;
return $handler->edit_cache_set_key($item, $key);
}
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}
/**
* Implements hook_menu_local_tasks_alter().
*/
function ctools_menu_local_tasks_alter(&$data, $router_item, $root_path) {
ctools_include('menu');
_ctools_menu_add_dynamic_items($data, $router_item, $root_path);
}