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<?php
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// $Id: ajax.inc,v 1.19 2008/09/22 20:50:58 merlinofchaos Exp $
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/**
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* @file ajax.inc
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*
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* Handles the server side AJAX interactions of Views.
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*
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* @defgroup ajax Views ajax library
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* @{
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*/
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/**
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* Menu callback to load a view via AJAX.
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*/
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function views_ajax() {
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if (isset($_REQUEST['view_name']) && isset($_REQUEST['view_display_id'])) {
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$name = $_REQUEST['view_name'];
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$display_id = $_REQUEST['view_display_id'];
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$args = isset($_REQUEST['view_args']) && $_REQUEST['view_args'] !== '' ? explode('/', $_REQUEST['view_args']) : array();
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$path = isset($_REQUEST['view_path']) ? $_REQUEST['view_path'] : NULL;
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$dom_id = isset($_REQUEST['view_dom_id']) ? $_REQUEST['view_dom_id'] : NULL;
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$pager_element = isset($_REQUEST['pager_element']) ? $_REQUEST['pager_element'] : NULL;
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views_include('ajax');
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$object = new stdClass();
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$object->status = FALSE;
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$object->display = '';
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$arg = explode('/', $_REQUEST['view_path']);
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if ($arg[0] == 'admin' || (variable_get('node_admin_theme', '0') && $arg[0] == 'node' && ($arg[1] == 'add' || $arg[2] == 'edit'))) {
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global $custom_theme;
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$custom_theme = variable_get('admin_theme', '0');
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drupal_add_css(drupal_get_path('module', 'system') .'/admin.css', 'module');
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}
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// Load the view.
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if ($view = views_get_view($name)) {
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if ($view->access($display_id)) {
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// Fix 'q' for paging.
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if (!empty($path)) {
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$_GET['q'] = $path;
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}
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// Override the display's pager_element with the one actually used.
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if (isset($pager_element)) {
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$view->display[$display_id]->handler->set_option('pager_element', $pager_element);
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}
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// Reuse the same DOM id so it matches that in Drupal.settings.
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$view->dom_id = $dom_id;
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$errors = $view->validate();
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if ($errors === TRUE) {
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$object->status = TRUE;
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$object->title = $view->get_title();
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$object->display .= $view->preview($display_id, $args);
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}
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else {
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foreach ($errors as $error) {
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drupal_set_message($error, 'error');
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}
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}
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// Register the standard JavaScript callback.
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$object->__callbacks = array('Drupal.Views.Ajax.ajaxViewResponse');
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// Allow other modules to extend the data returned.
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drupal_alter('ajax_data', $object, 'views', $view);
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}
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}
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$messages = theme('status_messages');
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$object->messages = $messages ? '<div class="views-messages">' . $messages . '</div>' : '';
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views_ajax_render($object);
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}
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}
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/**
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* Simple render function to make sure output is what we want.
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*
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* This function renders an object into JSON, and that object contains
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* commands to the ajax response parser on the other side. The actual
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* commands that can be sent are completely dependent upon the client
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* javascript parser, which can be anything, but this function assumes
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* that 'display', at least, will be displayed in some kind of ajax
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* spot or popup.
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*/
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function views_ajax_render($output = NULL, $title = NULL, $url = NULL, $js = NULL) {
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if (empty($output)) {
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$output->display = t('Server reports invalid input error.');
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$output->title = t('Error');
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}
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elseif (!is_object($output)) {
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$temp = new stdClass();
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$temp->display = $output;
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$temp->title = $title;
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$temp->url = $url;
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$output = $temp;
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}
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if (!empty($js)) {
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$output->js = $js;
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}
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drupal_json($output);
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exit;
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}
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/**
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* Wrapper around drupal_build_form to handle some AJAX stuff automatically.
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* This makes some assumptions about the client.
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*/
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function views_ajax_form_wrapper($form_id, &$form_state) {
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// This won't override settings already in.
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$form_state += array(
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're_render' => FALSE,
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'no_redirect' => !empty($form_state['ajax']),
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);
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$output = drupal_build_form($form_id, $form_state);
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if (!empty($form_state['ajax']) && empty($form_state['executed'])) {
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// If the form didn't execute and we're using ajax, build up a
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// json command object to render.
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$object = new stdClass();
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$object->display = '';
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if ($messages = theme('status_messages')) {
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$object->display = '<div class="views-messages">' . $messages . '</div>';
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}
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$object->display .= $output;
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$object->title = empty($form_state['title']) ? '' : $form_state['title'];
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if (!empty($form_state['help_topic'])) {
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$module = !empty($form_state['help_module']) ? $form_state['help_module'] : 'views';
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$object->title = theme('advanced_help_topic', $module, $form_state['help_topic']) . $object->title;
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}
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$object->url = empty($form_state['url']) ? url($_GET['q'], array('absolute' => TRUE)) : $form_state['url'];
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$object->js = empty($form_state['js settings']) ? NULL : $form_state['js settings'];
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if (!empty($form_state['#section'])) {
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$object->hilite = '.' . views_ui_item_css($form_state['#section']);
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}
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$output = $object;
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}
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// These forms have the title built in, so set the title here:
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if (empty($form_state['ajax']) && !empty($form_state['title'])) {
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drupal_set_title($form_state['title']);
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}
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return $output;
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}
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/**
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* Page callback for views user autocomplete
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*/
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function views_ajax_autocomplete_user($string = '') {
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// The user enters a comma-separated list of tags. We only autocomplete the last tag.
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$array = drupal_explode_tags($string);
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// Fetch last tag
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$last_string = trim(array_pop($array));
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$matches = array();
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if ($last_string != '') {
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$prefix = count($array) ? implode(', ', $array) . ', ' : '';
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if (strpos('anonymous', strtolower($last_string)) !== FALSE) {
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$matches[$prefix . 'Anonymous'] = 'Anonymous';
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}
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$result = db_query_range("SELECT name FROM {users} WHERE LOWER(name) LIKE LOWER('%s%%')", $last_string, 0, 10);
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while ($account = db_fetch_object($result)) {
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$n = $account->name;
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// Commas and quotes in terms are special cases, so encode 'em.
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if (strpos($account->name, ',') !== FALSE || strpos($account->name, '"') !== FALSE) {
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$n = '"' . str_replace('"', '""', $account->name) . '"';
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}
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$matches[$prefix . $n] = check_plain($account->name);
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}
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}
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drupal_json($matches);
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}
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/**
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* @}
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*/
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