danielebarchiesi@0: <?php
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * @file
danielebarchiesi@0:  * Contains administrative screens for the access control plugins.
danielebarchiesi@0:  *
danielebarchiesi@0:  * Access control can be implemented by creating a list of 0 or more access
danielebarchiesi@0:  * plugins, each with settings. This list can be ANDed together or ORed
danielebarchiesi@0:  * together. When testing access, each plugin is tested until success
danielebarchiesi@0:  * or failure can be determined. We use short circuiting techniques to
danielebarchiesi@0:  * ensure we are as efficient as possible.
danielebarchiesi@0:  *
danielebarchiesi@0:  * Access plugins are part of the context system, and as such can require
danielebarchiesi@0:  * contexts to work. That allows the use of access based upon visibility
danielebarchiesi@0:  * of an object, or even more esoteric things such as node type, node language
danielebarchiesi@0:  * etc. Since a lot of access depends on the logged in user, the logged in
danielebarchiesi@0:  * user should always be provided as a context.
danielebarchiesi@0:  *
danielebarchiesi@0:  * In the UI, the user is presented with a table and a 'add access method' select.
danielebarchiesi@0:  * When added, the user will be presented with the config wizard and, when
danielebarchiesi@0:  * confirmed, table will be refreshed via AJAX to show the new access method.
danielebarchiesi@0:  * Each item in the table will have controls to change the settings or remove
danielebarchiesi@0:  * the item. Changing the settings will invoke the modal for update.
danielebarchiesi@0:  *
danielebarchiesi@0:  * Currently the modal is not degradable, but it could be with only a small
danielebarchiesi@0:  * amount of work.
danielebarchiesi@0:  *
danielebarchiesi@0:  * A simple radio
danielebarchiesi@0:  * control is used to let the user pick the and/or logic.
danielebarchiesi@0:  *
danielebarchiesi@0:  * Access control is stored in an array:
danielebarchiesi@0:  * @code
danielebarchiesi@0:  *   array(
danielebarchiesi@0:  *     'plugins' => array(
danielebarchiesi@0:  *       0 => array(
danielebarchiesi@0:  *         'name' => 'name of access plugin',
danielebarchiesi@0:  *         'settings' => array(), // These will be set by the form
danielebarchiesi@0:  *       ),
danielebarchiesi@0:  *       // ... as many as needed
danielebarchiesi@0:  *     ),
danielebarchiesi@0:  *     'logic' => 'AND', // or 'OR',
danielebarchiesi@0:  *   ),
danielebarchiesi@0:  * @endcode
danielebarchiesi@0:  *
danielebarchiesi@0:  * To add this widget to your UI, you need to do a little bit of setup.
danielebarchiesi@0:  *
danielebarchiesi@0:  * The form will utilize two callbacks, one to get the cached version
danielebarchiesi@0:  * of the access settings, and one to store the cached version of the
danielebarchiesi@0:  * access settings. These will be used from AJAX forms, so they will
danielebarchiesi@0:  * be completely out of the context of this page load and will not have
danielebarchiesi@0:  * knowledge of anything sent to this form (the 'module' and 'argument'
danielebarchiesi@0:  * will be preserved through the URL only).
danielebarchiesi@0:  *
danielebarchiesi@0:  * The 'module' is used to determine the location of the callback. It
danielebarchiesi@0:  * does not strictly need to be a module, so that if your module defines
danielebarchiesi@0:  * multiple systems that use this callback, it can use anything within the
danielebarchiesi@0:  * module's namespace it likes.
danielebarchiesi@0:  *
danielebarchiesi@0:  * When retrieving the cache, the cache may not have already been set up;
danielebarchiesi@0:  * In order to efficiently use cache space, we want to cache the stored
danielebarchiesi@0:  * settings *only* when they have changed. Therefore, the get access cache
danielebarchiesi@0:  * callback should first look for cache, and if it finds nothing, return
danielebarchiesi@0:  * the original settings.
danielebarchiesi@0:  *
danielebarchiesi@0:  * The callbacks:
danielebarchiesi@0:  * - $module . _ctools_access_get($argument) -- get the 'access' settings
danielebarchiesi@0:  *   from cache. Must return array($access, $contexts); This callback can
danielebarchiesi@0:  *   perform access checking to make sure this URL is not being gamed.
danielebarchiesi@0:  * - $module . _ctools_access_set($argument, $access) -- set the 'access'
danielebarchiesi@0:  *   settings in cache.
danielebarchiesi@0:  * - $module . _ctools_access_clear($argument) -- clear the cache.
danielebarchiesi@0:  *
danielebarchiesi@0:  * The ctools_object_cache is recommended for this purpose, but you can use
danielebarchiesi@0:  * any caching mechanism you like. An example:
danielebarchiesi@0:  *
danielebarchiesi@0:  * @code{
danielebarchiesi@0:  *   ctools_include('object-cache');
danielebarchiesi@0:  *   ctools_object_cache_set("$module:argument", $access);
danielebarchiesi@0:  * }
danielebarchiesi@0:  *
danielebarchiesi@0:  * To utilize this form:
danielebarchiesi@0:  * @code
danielebarchiesi@0:  *   ctools_include('context-access-admin');
danielebarchiesi@0:  *   $form_state = array(
danielebarchiesi@0:  *     'access' => $access,
danielebarchiesi@0:  *     'module' => 'module name',
danielebarchiesi@0:  *     'callback argument' => 'some string',
danielebarchiesi@0:  *     'contexts' => $contexts, // an array of contexts. Optional if no contexts.
danielebarchiesi@0:  *     // 'logged-in-user' will be added if not present as the access system
danielebarchiesi@0:  *     // requires this context.
danielebarchiesi@0:  *   ),
danielebarchiesi@0:  *   $output = drupal_build_form('ctools_access_admin_form', $form_state);
danielebarchiesi@0:  *   if (!empty($form_state['executed'])) {
danielebarchiesi@0:  *     // save $form_state['access'] however you like.
danielebarchiesi@0:  *   }
danielebarchiesi@0:  * @endcode
danielebarchiesi@0:  *
danielebarchiesi@0:  * Additionally, you may add 'no buttons' => TRUE if you wish to embed this
danielebarchiesi@0:  * form into your own, and instead call
danielebarchiesi@0:  *
danielebarchiesi@0:  * @code{
danielebarchiesi@0:  *   $form = ctools_access_admin_form($form, $form_state);
danielebarchiesi@0:  * }
danielebarchiesi@0:  *
danielebarchiesi@0:  * You'll be responsible for adding a submit button.
danielebarchiesi@0:  *
danielebarchiesi@0:  * You may use ctools_access($access, $contexts) which will return
danielebarchiesi@0:  * TRUE if access is passed or FALSE if access is not passed.
danielebarchiesi@0:  */
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * Administrative form for access control.
danielebarchiesi@0:  */
danielebarchiesi@0: function ctools_access_admin_form($form, &$form_state) {
danielebarchiesi@0:   ctools_include('context');
danielebarchiesi@0:   $argument = isset($form_state['callback argument']) ? $form_state['callback argument'] : '';
danielebarchiesi@0:   $fragment = $form_state['module'];
danielebarchiesi@0:   if ($argument) {
danielebarchiesi@0:     $fragment .= '-' . $argument;
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $contexts = isset($form_state['contexts']) ? $form_state['contexts'] : array();
danielebarchiesi@0: 
danielebarchiesi@0:   $form['access_table'] = array(
danielebarchiesi@0:     '#markup' => ctools_access_admin_render_table($form_state['access'], $fragment, $contexts),
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   $form['add-button'] = array(
danielebarchiesi@0:     '#theme' => 'ctools_access_admin_add',
danielebarchiesi@0:   );
danielebarchiesi@0:   // This sets up the URL for the add access modal.
danielebarchiesi@0:   $form['add-button']['add-url'] = array(
danielebarchiesi@0:     '#attributes' => array('class' => array("ctools-access-add-url")),
danielebarchiesi@0:     '#type' => 'hidden',
danielebarchiesi@0:     '#value' => url("ctools/context/ajax/access/add/$fragment", array('absolute' => TRUE)),
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   $plugins = ctools_get_relevant_access_plugins($contexts);
danielebarchiesi@0:   $options = array();
danielebarchiesi@0:   foreach ($plugins as $id => $plugin) {
danielebarchiesi@0:     $options[$id] = $plugin['title'];
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   asort($options);
danielebarchiesi@0: 
danielebarchiesi@0:   $form['add-button']['type'] = array(
danielebarchiesi@0:     // This ensures that the form item is added to the URL.
danielebarchiesi@0:     '#attributes' => array('class' => array("ctools-access-add-url")),
danielebarchiesi@0:     '#type' => 'select',
danielebarchiesi@0:     '#options' => $options,
danielebarchiesi@0:     '#required' => FALSE,
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   $form['add-button']['add'] = array(
danielebarchiesi@0:     '#type' => 'submit',
danielebarchiesi@0:     '#attributes' => array('class' => array('ctools-use-modal')),
danielebarchiesi@0:     '#id' => "ctools-access-add",
danielebarchiesi@0:     '#value' => t('Add'),
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   $form['logic'] = array(
danielebarchiesi@0:     '#type' => 'radios',
danielebarchiesi@0:     '#options' => array(
danielebarchiesi@0:       'and' => t('All criteria must pass.'),
danielebarchiesi@0:       'or' => t('Only one criteria must pass.'),
danielebarchiesi@0:     ),
danielebarchiesi@0:     '#default_value' => isset($form_state['access']['logic']) ? $form_state['access']['logic'] : 'and',
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   if (empty($form_state['no buttons'])) {
danielebarchiesi@0:     $form['buttons']['save'] = array(
danielebarchiesi@0:       '#type' => 'submit',
danielebarchiesi@0:       '#value' => t('Save'),
danielebarchiesi@0:       '#submit' => array('ctools_access_admin_form_submit'),
danielebarchiesi@0:     );
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   return $form;
danielebarchiesi@0: }
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * Render the table. This is used both to render it initially and to rerender
danielebarchiesi@0:  * it upon ajax response.
danielebarchiesi@0:  */
danielebarchiesi@0: function ctools_access_admin_render_table($access, $fragment, $contexts) {
danielebarchiesi@0:   ctools_include('ajax');
danielebarchiesi@0:   ctools_include('modal');
danielebarchiesi@0:   $rows = array();
danielebarchiesi@0: 
danielebarchiesi@0:   if (empty($access['plugins'])) {
danielebarchiesi@0:     $access['plugins'] = array();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   foreach ($access['plugins'] as $id => $test) {
danielebarchiesi@0:     $row    = array();
danielebarchiesi@0:     $plugin = ctools_get_access_plugin($test['name']);
danielebarchiesi@0:     $title  = isset($plugin['title']) ? $plugin['title'] : t('Broken/missing access plugin %plugin', array('%plugin' => $test['name']));
danielebarchiesi@0: 
danielebarchiesi@0:     $row[] = array('data' => $title, 'class' => array('ctools-access-title'));
danielebarchiesi@0: 
danielebarchiesi@0:     $description = ctools_access_summary($plugin, $contexts, $test);
danielebarchiesi@0:     $row[] = array('data' => $description, 'class' => array('ctools-access-description'));
danielebarchiesi@0: 
danielebarchiesi@0:     $operations = ctools_modal_image_button(ctools_image_path('icon-configure.png'), "ctools/context/ajax/access/configure/$fragment/$id", t('Configure settings for this item.'));
danielebarchiesi@0:     $operations .= ctools_ajax_image_button(ctools_image_path('icon-delete.png'), "ctools/context/ajax/access/delete/$fragment/$id", t('Remove this item.'));
danielebarchiesi@0: 
danielebarchiesi@0:     $row[] = array('data' => $operations, 'class' => array('ctools-access-operations'), 'align' => 'right');
danielebarchiesi@0: 
danielebarchiesi@0:     $rows[] = $row;
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $header = array(
danielebarchiesi@0:     array('data' => t('Title'), 'class' => array('ctools-access-title')),
danielebarchiesi@0:     array('data' => t('Description'), 'class' => array('ctools-access-description')),
danielebarchiesi@0:     array('data' => '', 'class' => array('ctools-access-operations'), 'align' => 'right'),
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   if (empty($rows)) {
danielebarchiesi@0:     $rows[] = array(array('data' => t('No criteria selected, this test will pass.'), 'colspan' => count($header)));
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   ctools_modal_add_js();
danielebarchiesi@0:   return theme('table', array('header' => $header, 'rows' => $rows, 'attributes' => array('id' => 'ctools-access-table')));
danielebarchiesi@0: }
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * Theme the 'add' portion of the access form into a table.
danielebarchiesi@0:  */
danielebarchiesi@0: function theme_ctools_access_admin_add($vars) {
danielebarchiesi@0:   $rows = array(array(drupal_render_children($vars['form'])));
danielebarchiesi@0:   $output = '<div class="container-inline">';
danielebarchiesi@0:   $output .= theme('table', array('rows' => $rows));
danielebarchiesi@0:   $output .= '</div>';
danielebarchiesi@0:   return $output;
danielebarchiesi@0: }
danielebarchiesi@0: 
danielebarchiesi@0: function ctools_access_admin_form_submit($form, &$form_state) {
danielebarchiesi@0:   $form_state['access']['logic'] = $form_state['values']['logic'];
danielebarchiesi@0: 
danielebarchiesi@0:   $function = $form_state['module'] . '_ctools_access_clear';
danielebarchiesi@0:   if (function_exists($function)) {
danielebarchiesi@0:     $function($form_state['callback argument']);
danielebarchiesi@0:   }
danielebarchiesi@0: }
danielebarchiesi@0: 
danielebarchiesi@0: // --------------------------------------------------------------------------
danielebarchiesi@0: // AJAX menu entry points.
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * AJAX callback to add a new access test to the list.
danielebarchiesi@0:  */
danielebarchiesi@0: function ctools_access_ajax_add($fragment = NULL, $name = NULL) {
danielebarchiesi@0:   ctools_include('ajax');
danielebarchiesi@0:   ctools_include('modal');
danielebarchiesi@0:   ctools_include('context');
danielebarchiesi@0: 
danielebarchiesi@0:   if (empty($fragment) || empty($name)) {
danielebarchiesi@0:     ctools_ajax_render_error();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $plugin = ctools_get_access_plugin($name);
danielebarchiesi@0:   if (empty($plugin)) {
danielebarchiesi@0:     ctools_ajax_render_error();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   // Separate the fragment into 'module' and 'argument'
danielebarchiesi@0:   if (strpos($fragment, '-') === FALSE) {
danielebarchiesi@0:     $module = $fragment;
danielebarchiesi@0:     $argument = NULL;
danielebarchiesi@0:   }
danielebarchiesi@0:   else {
danielebarchiesi@0:     list($module, $argument) = explode('-', $fragment, 2);
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $function = $module . '_ctools_access_get';
danielebarchiesi@0:   if (!function_exists($function)) {
danielebarchiesi@0:     ctools_ajax_render_error(t('Missing callback hooks.'));
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   list($access, $contexts) = $function($argument);
danielebarchiesi@0: 
danielebarchiesi@0:   // Make sure we have the logged in user context
danielebarchiesi@0:   if (!isset($contexts['logged-in-user'])) {
danielebarchiesi@0:     $contexts['logged-in-user'] = ctools_access_get_loggedin_context();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   if (empty($access['plugins'])) {
danielebarchiesi@0:     $access['plugins'] = array();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $test = ctools_access_new_test($plugin);
danielebarchiesi@0: 
danielebarchiesi@0:   $id = $access['plugins'] ? max(array_keys($access['plugins'])) + 1 : 0;
danielebarchiesi@0:   $access['plugins'][$id] = $test;
danielebarchiesi@0: 
danielebarchiesi@0:   $form_state = array(
danielebarchiesi@0:     'plugin' => $plugin,
danielebarchiesi@0:     'id' => $id,
danielebarchiesi@0:     'test' => &$access['plugins'][$id],
danielebarchiesi@0:     'access' => &$access,
danielebarchiesi@0:     'contexts' => $contexts,
danielebarchiesi@0:     'title' => t('Add criteria'),
danielebarchiesi@0:     'ajax' => TRUE,
danielebarchiesi@0:     'modal' => TRUE,
danielebarchiesi@0:     'modal return' => TRUE,
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   $output = ctools_modal_form_wrapper('ctools_access_ajax_edit_item', $form_state);
danielebarchiesi@0:   if (!isset($output[0])) {
danielebarchiesi@0:     $function = $module . '_ctools_access_set';
danielebarchiesi@0:     if (function_exists($function)) {
danielebarchiesi@0:       $function($argument, $access);
danielebarchiesi@0:     }
danielebarchiesi@0: 
danielebarchiesi@0:     $table    = ctools_access_admin_render_table($access, $fragment, $contexts);
danielebarchiesi@0:     $output   = array();
danielebarchiesi@0:     $output[] = ajax_command_replace('table#ctools-access-table', $table);
danielebarchiesi@0:     $output[] = ctools_modal_command_dismiss();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   print ajax_render($output);
danielebarchiesi@0: }
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * AJAX callback to edit an access test in the list.
danielebarchiesi@0:  */
danielebarchiesi@0: function ctools_access_ajax_edit($fragment = NULL, $id = NULL) {
danielebarchiesi@0:   ctools_include('ajax');
danielebarchiesi@0:   ctools_include('modal');
danielebarchiesi@0:   ctools_include('context');
danielebarchiesi@0: 
danielebarchiesi@0:   if (empty($fragment) || !isset($id)) {
danielebarchiesi@0:     ctools_ajax_render_error();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   // Separate the fragment into 'module' and 'argument'
danielebarchiesi@0:   if (strpos($fragment, '-') === FALSE) {
danielebarchiesi@0:     $module = $fragment;
danielebarchiesi@0:     $argument = NULL;
danielebarchiesi@0:   }
danielebarchiesi@0:   else {
danielebarchiesi@0:     list($module, $argument) = explode('-', $fragment, 2);
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $function = $module . '_ctools_access_get';
danielebarchiesi@0:   if (!function_exists($function)) {
danielebarchiesi@0:     ctools_ajax_render_error(t('Missing callback hooks.'));
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   list($access, $contexts) = $function($argument);
danielebarchiesi@0: 
danielebarchiesi@0:   if (empty($access['plugins'][$id])) {
danielebarchiesi@0:     ctools_ajax_render_error();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   // Make sure we have the logged in user context
danielebarchiesi@0:   if (!isset($contexts['logged-in-user'])) {
danielebarchiesi@0:     $contexts['logged-in-user'] = ctools_access_get_loggedin_context();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $plugin = ctools_get_access_plugin($access['plugins'][$id]['name']);
danielebarchiesi@0:   $form_state = array(
danielebarchiesi@0:     'plugin' => $plugin,
danielebarchiesi@0:     'id' => $id,
danielebarchiesi@0:     'test' => &$access['plugins'][$id],
danielebarchiesi@0:     'access' => &$access,
danielebarchiesi@0:     'contexts' => $contexts,
danielebarchiesi@0:     'title' => t('Edit criteria'),
danielebarchiesi@0:     'ajax' => TRUE,
danielebarchiesi@0:     'ajax' => TRUE,
danielebarchiesi@0:     'modal' => TRUE,
danielebarchiesi@0:     'modal return' => TRUE,
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   $output = ctools_modal_form_wrapper('ctools_access_ajax_edit_item', $form_state);
danielebarchiesi@0:   if (!isset($output[0])) {
danielebarchiesi@0:     $function = $module . '_ctools_access_set';
danielebarchiesi@0:     if (function_exists($function)) {
danielebarchiesi@0:       $function($argument, $access);
danielebarchiesi@0:     }
danielebarchiesi@0: 
danielebarchiesi@0:     $table    = ctools_access_admin_render_table($access, $fragment, $contexts);
danielebarchiesi@0:     $output   = array();
danielebarchiesi@0:     $output[] = ajax_command_replace('table#ctools-access-table', $table);
danielebarchiesi@0:     $output[] = ctools_modal_command_dismiss();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   print ajax_render($output);
danielebarchiesi@0: }
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * Form to edit the settings of an access test.
danielebarchiesi@0:  */
danielebarchiesi@0: function ctools_access_ajax_edit_item($form, &$form_state) {
danielebarchiesi@0:   $test = &$form_state['test'];
danielebarchiesi@0:   $plugin = &$form_state['plugin'];
danielebarchiesi@0:   if (isset($plugin['required context'])) {
danielebarchiesi@0:     $form['context'] = ctools_context_selector($form_state['contexts'], $plugin['required context'], $test['context']);
danielebarchiesi@0:   }
danielebarchiesi@0:   $form['settings'] = array('#tree' => TRUE);
danielebarchiesi@0:   if ($function = ctools_plugin_get_function($plugin, 'settings form')) {
danielebarchiesi@0:     $form = $function($form, $form_state, $test['settings']);
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $form['not'] = array(
danielebarchiesi@0:     '#type' => 'checkbox',
danielebarchiesi@0:     '#title' => t('Reverse (NOT)'),
danielebarchiesi@0:     '#default_value' => !empty($test['not']),
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   $form['save'] = array(
danielebarchiesi@0:     '#type' => 'submit',
danielebarchiesi@0:     '#value' => t('Save'),
danielebarchiesi@0:   );
danielebarchiesi@0: 
danielebarchiesi@0:   return $form;
danielebarchiesi@0: }
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * Validate handler for argument settings.
danielebarchiesi@0:  */
danielebarchiesi@0: function ctools_access_ajax_edit_item_validate($form, &$form_state) {
danielebarchiesi@0:   if ($function = ctools_plugin_get_function($form_state['plugin'], 'settings form validate')) {
danielebarchiesi@0:     $function($form, $form_state);
danielebarchiesi@0:   }
danielebarchiesi@0: }
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * Submit handler for argument settings.
danielebarchiesi@0:  */
danielebarchiesi@0: function ctools_access_ajax_edit_item_submit($form, &$form_state) {
danielebarchiesi@0:   if ($function = ctools_plugin_get_function($form_state['plugin'], 'settings form submit')) {
danielebarchiesi@0:     $function($form, $form_state);
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $form_state['test']['settings'] = $form_state['values']['settings'];
danielebarchiesi@0:   if (isset($form_state['values']['context'])) {
danielebarchiesi@0:     $form_state['test']['context'] = $form_state['values']['context'];
danielebarchiesi@0:   }
danielebarchiesi@0:   $form_state['test']['not'] = !empty($form_state['values']['not']);
danielebarchiesi@0: }
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * AJAX command to remove an access control item.
danielebarchiesi@0:  */
danielebarchiesi@0: function ctools_access_ajax_delete($fragment = NULL, $id = NULL) {
danielebarchiesi@0:   ctools_include('ajax');
danielebarchiesi@0:   ctools_include('modal');
danielebarchiesi@0:   ctools_include('context');
danielebarchiesi@0: 
danielebarchiesi@0:   if (empty($fragment) || !isset($id)) {
danielebarchiesi@0:     ajax_render_error();
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   // Separate the fragment into 'module' and 'argument'
danielebarchiesi@0:   if (strpos($fragment, '-') === FALSE) {
danielebarchiesi@0:     $module = $fragment;
danielebarchiesi@0:     $argument = NULL;
danielebarchiesi@0:   }
danielebarchiesi@0:   else {
danielebarchiesi@0:     list($module, $argument) = explode('-', $fragment, 2);
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $function = $module . '_ctools_access_get';
danielebarchiesi@0:   if (!function_exists($function)) {
danielebarchiesi@0:     ajax_render_error(t('Missing callback hooks.'));
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   list($access, $contexts) = $function($argument);
danielebarchiesi@0: 
danielebarchiesi@0:   if (isset($access['plugins'][$id])) {
danielebarchiesi@0:     unset($access['plugins'][$id]);
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   // re-cache
danielebarchiesi@0:   $function = $module . '_ctools_access_set';
danielebarchiesi@0:   if (function_exists($function)) {
danielebarchiesi@0:     $function($argument, $access);
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   $table    = ctools_access_admin_render_table($access, $fragment, $contexts);
danielebarchiesi@0:   $output   = array();
danielebarchiesi@0:   $output[] = ajax_command_replace('table#ctools-access-table', $table);
danielebarchiesi@0: 
danielebarchiesi@0:   print ajax_render($output);
danielebarchiesi@0: }