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<?php
/**
* @file
* Webform AJAX module file.
*
* Implements Drupal hooks to provide AJAX submission and page change to Webforms.
*/
define('WEBFORM_AJAX_NO_AJAX', 0);
define('WEBFORM_AJAX_CONFIRM', 1);
define('WEBFORM_AJAX_NO_CONFIRM', -1);
/**
* Implements hook_menu().
*/
function webform_ajax_menu() {
$items = array();
$items['webform_ajax/return_webform/%node/%'] = array(
'title' => 'Webform AJAX callback',
'page callback' => 'webform_ajax_confirm_return_ajax_callback',
'page arguments' => array(2, 3),
'delivery callback' => 'ajax_deliver',
'access callback' => 'node_access',
'access arguments' => array('view', 2),
'theme callback' => 'ajax_base_page_theme',
'type' => MENU_CALLBACK,
);
return $items;
}
/**
* Implements hook_form_FORM_ID_alter().
*
* With FORM_ID = webform_configure_form.
* Add AJAX option to Webform configure form.
*/
function webform_ajax_form_webform_configure_form_alter(&$form, &$form_state) {
$node = $form_state['build_info']['args'][0];
$form['webform_ajax_fieldset'] = array(
'#type' => 'fieldset',
'#title' => t('AJAX'),
'#collapsible' => TRUE,
'#collapsed' => $node->webform['webform_ajax'] == WEBFORM_AJAX_NO_AJAX,
);
$form['webform_ajax_fieldset']['webform_ajax'] = array(
'#type' => 'checkbox',
'#title' => t('AJAX mode'),
'#description' => t('When set, all page changes (from pagebreak component), and webform submission will be achieved in AJAX.'),
'#default_value' => $node->webform['webform_ajax'] != WEBFORM_AJAX_NO_AJAX,
);
$form['webform_ajax_fieldset']['webform_ajax_confirmation'] = array(
'#type' => 'checkbox',
'#title' => t('Show confirmation screen'),
'#description' => t('Choose wether to retrieve in AJAX, after webform submit, the confirmation screen, or the webform itself. Available only when redirection is set to "No redirect".'),
'#default_value' => $node->webform['webform_ajax'] == WEBFORM_AJAX_NO_CONFIRM ? FALSE : TRUE,
'#states' => array(
'visible' => array(
':input[name="redirect"]' => array('value' => 'none'),
'#edit-webform-ajax' => array('checked' => TRUE),
)
)
);
array_unshift($form['#submit'], 'webform_ajax_webform_configure_form_submit');
}
/**
* Additional submit callback for form webform_configure_form.
*/
function webform_ajax_webform_configure_form_submit(&$form, &$form_state) {
if ($form_state['values']['webform_ajax'] == WEBFORM_AJAX_NO_AJAX) {
$webform_ajax = WEBFORM_AJAX_NO_AJAX;
}
else {
$webform_ajax = $form_state['values']['webform_ajax_confirmation'] ? WEBFORM_AJAX_CONFIRM : WEBFORM_AJAX_NO_CONFIRM;
}
$form['#node']->webform['webform_ajax'] = $webform_ajax;
}
/**
* Implements hook_form_FORM_ID_alter().
*
* With FORM_ID = webform_client_form.
* Add AJAX logic to Webform form.
*/
function webform_ajax_form_webform_client_form_alter(&$form, $form_state, $form_id) {
$webform = $form['#node']->webform;
if ($webform['webform_ajax'] != WEBFORM_AJAX_NO_AJAX) {
// The wrapper ID will have to follow the webform all the time, to be unique,
// and allow AJAX commands to perform correctly.
// We have many ways to get it back depending on the situation.
$form['webform_ajax_wrapper_id'] = array(
'#type' => 'hidden',
);
if (isset($form_state['values']['webform_ajax_wrapper_id'])) {
$form['webform_ajax_wrapper_id']['#value'] = $form_state['values']['webform_ajax_wrapper_id'];
}
elseif (isset($form['#node']->webform['webform_ajax_wrapper_id'])) {
$form['webform_ajax_wrapper_id']['#value'] = $form['#node']->webform['webform_ajax_wrapper_id'];
}
else {
// At last, generate a unique ID.
$form['webform_ajax_wrapper_id']['#value'] = drupal_html_id('webform-ajax-wrapper-' . $form['#node']->nid);
}
$form['#prefix'] = '<div id="' . $form['webform_ajax_wrapper_id']['#value'] . '">' . (isset($form['#prefix']) ? $form['#prefix'] : '');
$form['#suffix'] = (isset($form['#suffix']) ? $form['#suffix'] : '') . '</div>';
foreach (array('previous', 'next', 'submit', 'draft') as $button) {
if (isset($form['actions'][$button])) {
$form['actions'][$button]['#ajax'] = array(
'callback' => 'webform_ajax_callback',
'wrapper' => $form['webform_ajax_wrapper_id']['#value'],
'progress' => array(
'message' => '',
'type' => 'throbber',
),
);
if (in_array($button, array('next', 'submit'))) {
$form['actions'][$button]['#ajax']['event'] = 'click';
}
// Workaround for Drupal core bug http://drupal.org/node/1548976.
// As long as buttons HTML id are causing problems, and it has bad
// consequences on pages where Webform AJAX is active, we'll force
// custom ids on AJAXed Webform's buttons.
$form['actions'][$button]['#id'] = drupal_html_id('edit-webform-ajax-' . $button . '-' .$form['#node']->nid);
}
}
}
}
/**
* AJAX callback for Webform Prev/Next page and Submit buttons.
*
* Returns the new computed webform, unless it has been completed.
*/
function webform_ajax_callback($form, &$form_state) {
$output = array();
// If user completed his submission, determine what to do.
if (!empty($form_state['webform_completed']) && empty($form_state['save_draft'])) {
$output = _webform_ajax_callback_completed($form, $form_state);
}
// Else, we're just switching page, or saving draft.
else {
$output = $form;
}
return $output;
}
/**
* AJAX callback helper for a completed webform.
*
* Generates a redirect if needed, or displays the appropriate content.
*/
function _webform_ajax_callback_completed($form, $form_state) {
$output = '';
if (isset($form_state['redirect'])) {
// If a redirect is set, then use it to send a redirect instruction via AJAX.
ctools_include('ajax');
ctools_add_js('ajax-responder');
$redirect = is_array($form_state['redirect']) ? $form_state['redirect'] : array($form_state['redirect'], array());
// Send two AJAX commands:
// The first disables the form's buttons, to avoid extra click while waiting for redirect.
// The second is a redirect command, giving the browser the URL where to go next.
$output = array(
'#type' => 'ajax',
'#commands' => array(
ajax_command_invoke('#' . $form_state['values']['webform_ajax_wrapper_id'] . ' input.form-submit', 'attr', array('disabled', 'disabled')),
ctools_ajax_command_redirect($redirect[0], 0, $redirect[1]),
),
);
}
elseif ($form['#node']->webform['webform_ajax'] == WEBFORM_AJAX_CONFIRM) {
// Display webform confirmation.
$output = array(
'#type' => 'markup',
'#markup' => theme(array('webform_confirmation_' . $form['#node']->nid, 'webform_confirmation'), array('node' => $form['#node'], 'sid' => $form_state['values']['details']['sid'])),
'#prefix' => '<div id="' . $form_state['values']['webform_ajax_wrapper_id'] . '">',
'#suffix' => '</div>',
);
// Unset confirmation message previously set with drupal_set_message()
// by Webform module, as we displayed it themed.
// Get messages without clearing queue.
$status_messages = drupal_get_messages('status', FALSE);
// If there are status messages, we may want to clear one.
if (isset($status_messages['status'])) {
// This is the message we want to erase.
$confirmation = check_markup($form['#node']->webform['confirmation'], $form['#node']->webform['confirmation_format'], '', TRUE);
$index = array_search($confirmation, $status_messages['status']);
// If message found, then remove it from the list, clear the messages queue,
// then reset all messages (except the one we removed).
if ($index !== FALSE) {
unset($status_messages['status'][$index]);
drupal_get_messages('status');
foreach ($status_messages['status'] as $message) {
drupal_set_message($message);
}
}
}
// Add Javascript which will AJAXify "Return to form" link in webform_confirmation.
$ajax_setting = array('webform_ajax' => array('wrappers' => array(
$form_state['values']['webform_ajax_wrapper_id'] => array(
'wrapper_id' => $form_state['values']['webform_ajax_wrapper_id'],
'nid' => $form['#node']->nid,
'sid' => $form_state['values']['details']['sid'],
),
)));
$ajax_setting['webform_ajax']['url'] = url('webform_ajax/return_webform');
drupal_add_js($ajax_setting, 'setting');
drupal_add_js(drupal_get_path('module', 'webform_ajax') . '/js/webform_ajax.js', 'file');
}
elseif ($form['#node']->webform['webform_ajax'] == WEBFORM_AJAX_NO_CONFIRM) {
// We can't build a new form on the same request that submitted it (don't know why).
// So, as we need to rebuild the Webform, as AJAX response, tell the client to
// build another AJAX response to another URL (webform_ajax.js).
$ajax_setting = array('webform_ajax' => array('reload' => array(
'wrapper_id' => $form_state['values']['webform_ajax_wrapper_id'],
'nid' => $form['#node']->nid,
'sid' => $form_state['values']['details']['sid'],
'button_id' => $form['actions']['submit']['#id'],
)));
$ajax_setting['webform_ajax']['url'] = url('webform_ajax/return_webform');
drupal_add_js($ajax_setting, 'setting');
drupal_add_js(drupal_get_path('module', 'webform_ajax') . '/js/webform_ajax.js', 'file');
// This output does not alter the page, and ensures Drupal messages are kept for the next request.
$output = array(
'#type' => 'ajax',
);
}
return $output;
}
/**
* "Return to form" link AJAX callback.
*/
function webform_ajax_confirm_return_ajax_callback($node, $wrapper_id) {
// Fake full page mode to force webform messages output.
drupal_static_reset('arg');
$real_get_q = $_GET['q'];
$_GET['q'] = 'node/' . $node->nid;
$node->webform['webform_ajax_wrapper_id'] = $wrapper_id;
webform_node_view($node, 'full');
// Restore real $_GET['q'].
$_GET['q'] = $real_get_q;
drupal_static_reset('arg');
// Display the webform only if it is enabled. Otherwise, show messages.
if ($node->content['webform']['#enabled']) {
$output = $node->content['webform'];
}
else {
$output = array(
'#type' => 'markup',
'#markup' => t('The webform cannot be displayed.'),
);
}
return $output;
}