', NULL, NULL, TRUE);
$fb->logout($url);
}
}
/**
* Allows other modules to specify which Facebook Connect features are
* required. This will affect how the FB_RequireFeatures javascript method is
* called.
*/
function fb_connect_require_feature($feature = NULL, $fb_app = NULL) {
if ($feature && !isset($fb_app) && isset($GLOBALS['fb_app']))
$fb_app = $GLOBALS['fb_app'];
// some features may apply without an app, but for now let's enforce that an app is required.
if ($feature && !isset($fb_app))
return;
static $features;
if (!$features)
$features = array();
if ($fb_app && !isset($features[$fb_app->apikey]))
$features[$fb_app->apikey] = array('fb_app' => $fb_app,
'features' => array());
if ($feature)
$features[$fb_app->apikey]['features'][$feature] = $feature;
return $features;
}
/**
* Add an option when initializing facebook's javascript api.
*/
function fb_connect_init_option($option = NULL, $value = NULL, $fb_app = NULL) {
if ($option && !isset($fb_app))
$fb_app = $GLOBALS['fb_app'];
if ($option && !$fb_app)
return;
static $options;
if (!$options)
$options = array();
if ($fb_app && !isset($options[$fb_app->apikey])) {
$options[$fb_app->apikey] = array();
}
if ($option)
$options[$fb_app->apikey][$option] = $value;
return $options;
}
/**
* Add javascript to a facebook connect page.
*
* Use this to add calls to facebook JS,
* http://wiki.developers.facebook.com/index.php/JS_API_Index.
*
* We use Drupal's cache to store the javascript until it is rendered
* to a page. This approach is analogous to drupal_set_message
* storing data temporarily in the session. We use cache instead of
* session, because the session is not shared between Facebook's event
* callbacks and regular page requests.
*
*/
function fb_connect_init_js($js = NULL) {
$fbu = fb_facebook_user();
$fb_app = $GLOBALS['fb_app'];
$cid = 'fb_connect_init_js_' . $fb_app->apikey . '_' . $fbu;
$cache = cache_get($cid, 'cache');
if (!isset($cache->data)) {
$cache = new stdClass();
$cache->data = array();
}
if ($js) {
$cache->data[] = $js;
cache_set($cid, $cache->data, 'cache', time() + 60000); // Update cache
}
else if ($js === NULL) {
cache_clear_all($cid, 'cache');
}
return $cache->data;
}
/**
* Include facebook javascript in the footer of the current page.
*/
function fb_connect_footer($is_front) {
// Do nothing on FBML pages
if (fb_is_fbml_canvas()) {
return;
}
global $base_path;
$fb_feature_src = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on')
? "https://ssl.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php"
: "http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php" ;
$feature_data = fb_connect_require_feature();
$option_data = fb_connect_init_option();
if (count($feature_data)) {
foreach ($feature_data as $data) {
// Give other modules a chance to add javascript which executes after init.
$extra = fb_invoke(FB_OP_CONNECT_JS_INIT, $data, array());
$extra_js = implode("\n", $extra);
$fb_app = $data['fb_app'];
$features = $data['features'];
$options = json_encode($option_data[$fb_app->apikey]);
// Hack! What's the way to json_encode a function name?
$options = str_replace('"{', '', $options);
$options = str_replace('}"', '', $options);
// drupal_add_js cannot add external javascript, so we use hook_footer instead.
$output = '';
$output .= "\n";
$feature_list = '["' . implode('","', $features) . '"]';
// Put together the URL for the receiver. The prefix must be identical to the apps connect URL.
$receiver = fb_connect_get_connect_url($fb_app) . "fb_connect/receiver";
$output .= "
\n";
}
}
return $output;
}
/**
* Convenience method to get an apps connect URL.
*
*/
function fb_connect_get_connect_url($fb_app) {
// absolute URL with no rewriting applied
global $base_url;
$suffix = FB_SETTINGS_APP_NID . '/' . $fb_app->nid . '/';
// In regular pages, we need to add the suffix.
$url = $base_url . '/' . $suffix;
return $url;
}
function _fb_connect_block_login_defaults() {
return array('anon_not_connected' => array(
'title' => t('Facebook Connect'),
'body' => t('Connect with Facebook'),
),
'user_not_connected' => array(
'title' => t('Facebook Connect'),
'body' => t('Connect with Facebook'),
),
'connected' => array(
'title' => t('Facebook Connect'),
'body' => "",
),
);
}
/**
* Implementation of hook_block.
*/
function fb_connect_block($op = 'list', $delta = 0, $edit = array()) {
if ($op == 'list') {
$items = array();
foreach (fb_connect_enabled_apps() as $fb_app) {
$d = 'login_' . $fb_app->label;
$items[$d] = array(
'info' => t('Facebook Connect Login to !app',
array('!app' => $fb_app->title)),
);
}
return $items;
}
else if ($op == 'configure') {
$orig_defaults = _fb_connect_block_login_defaults();
$defaults = variable_get('fb_connect_block_' . $delta, $orig_defaults);
$form['config'] = array('#tree' => TRUE);
foreach(array('anon_not_connected', 'user_not_connected', 'connected') as $key) {
$form['config'][$key] = array(
'#type' => 'fieldset',
// title and description below
'#collapsible' => TRUE,
'#collapsed' => FALSE,
);
$form['config'][$key]['title'] = array(
'#type' => 'textfield',
'#title' => t('Default title'),
//'#description' => t('Default title.'),
'#default_value' => $defaults[$key]['title'],
);
$form['config'][$key]['body'] = array(
'#type' => 'textarea',
'#title' => t('Body'),
//'#description' => t('Block body'),
'#default_value' => $defaults[$key]['body'],
);
}
$form['config']['anon_not_connected']['#title'] = t('Anonymous user, not connected');
$form['config']['anon_not_connected']['#description'] = t('Settings when local user is Anonymous, and not connected to Facebook. Typically a new account will be created when the user clicks the connect button.');
$form['config']['anon_not_connected']['body']['#description'] = t('Suggestion: %default .', array('%default' => $orig_defaults['anon_not_connected']['body']));
$form['config']['user_not_connected']['#title'] = t('Registered user, not connected');
$form['config']['user_not_connected']['#description'] = t('Settings when local user is registered, and not connected to Facebook. Typically the facebook id will be linked to the local id after the user clicks the connect button.');
$form['config']['user_not_connected']['body']['#description'] = t('Suggestion: %default .', array('%default' => $orig_defaults['user_not_connected']['body']));
$form['config']['connected']['#title'] = t('Connected user');
$form['config']['connected']['#description'] = t('Settings when local user is connected to Facebook. You may render facebook\'s logout button, and/or information about the user. Consider using XFBML such as <fb:name uid=!fbu></fb:name> or <fb:profile-pic uid=!fbu></fb:profile-pic>', array('xfbml_url' => 'http://wiki.developers.facebook.com/index.php/XFBML'));
$form['config']['connected']['body']['#description'] .= t('Note that !fbu will be replaced with the user\'s facebook id.
Suggestion: %default .', array('%default' => $orig_defaults['connected']['body']));
$form['config']['format'] = filter_form($defaults['format']);
$form['config']['format']['#description'] .= t('Be sure to select a format which allows XFBML tags! (That is, use Full HTML or PHP code, rather than Filtered HTML.)
Format selected will apply to all body fields above.
');
$form['config']['format']['#collapsed'] = FALSE;
return $form;
}
else if ($op == 'save') {
$edit['config']['format'] = $edit['format'];
variable_set('fb_connect_block_' . $delta, $edit['config']);
}
else if ($op == 'view') {
if (strpos($delta, 'login_') === 0) {
// Login block
$label = substr($delta, 6); // length of 'login_'
$fb_app = fb_get_app(array('label' => $label));
$fb = fb_connect_app_init($fb_app);
$fbu = $fb->get_loggedin_user();
fb_connect_require_feature('XFBML', $fb_app);
//fb_connect_init_option('reloadIfSessionStateChanged', TRUE, $fb_app);
//fb_connect_init_option('doNotUseCachedConnectState', TRUE, $fb_app);
$base = drupal_get_path('module', 'fb_connect');
_fb_connect_add_js();
$defaults = variable_get('fb_connect_block_' . $delta, _fb_connect_block_login_defaults());
if ($fbu) {
$subject = $defaults['connected']['title'];
$content = $defaults['connected']['body'];
// substitute %fbu
$content = str_replace('!fbu', $fbu, $content);
} else if ($GLOBALS['user']->uid > 1) {
$subject = $defaults['user_not_connected']['title'];
$content = $defaults['user_not_connected']['body'];
} else if ($GLOBALS['user']->uid == 1) {
$subject = $defaults['user_not_connected']['title'];
$content = '' . t('Facebook Connect login disabled for user #1.') . '';
} else {
$subject = $defaults['anon_not_connected']['title'];
$content = $defaults['anon_not_connected']['body'];
}
// If user has changed defaults, run filter
if (isset($defaults['format'])) {
$subject = check_plain($subject);
$content = check_markup($content, $defaults['format'], FALSE);
}
$block = array(
'subject' => $subject,
'content' => $content,
);
return $block;
}
}
}
function fb_connect_form_alter(&$form, &$form_state, $form_id) {
// Add our settings to the fb_app edit form.
if (isset($form['fb_app_data'])) {
$node = $form['#node'];
$fb_app_data = fb_app_get_data($node->fb_app);
$fb_connect_data = $fb_app_data['fb_connect'];
$form['fb_app_data']['fb_connect'] = array(
'#type' => 'fieldset',
'#title' => 'Facebook Connect',
'#tree' => TRUE,
'#collapsible' => TRUE,
'#collapsed' => $node->nid ? TRUE : FALSE,
);
// "Primary" will be initialized on every non-canvas page.
$primary_nid = variable_get(FB_CONNECT_VAR_PRIMARY, NULL);
$form['fb_app_data']['fb_connect']['primary'] = array(
'#type' => 'checkbox',
'#title' => t('Primary'),
'#description' => t('Initialize fbConnect javascript on all (non-canvas) pages. If this site supports multiple Facebook Apps, this may be checked for at most one.'),
'#default_value' => isset($node->nid) && ($primary_nid == $node->nid),
);
if (($primary_nid) && ($primary_nid != $node->nid)) {
$primary = fb_get_app(array('nid' => $primary_nid));
$form['fb_app_data']['fb_connect']['primary']['#description'] .= '
' .
t('Note that checking this will replace %app as the primary Facebook Connect app.', array('%app' => $primary ? $primary->title : $primary_nid));
}
}
// Add button to login form.
if (($form_id == 'user_login_block' || $form_id == 'user_login') &&
!fb_is_fbml_canvas()) {
if ($app_nid = variable_get(FB_CONNECT_VAR_LOGIN, NULL)) {
$fb_app = fb_get_app(array('nid' => $app_nid));
// Ensure that facebook javascript is in the page closure.
fb_connect_require_feature('XFBML', $fb_app);
fb_connect_init_option('ifUserConnected', "{FB_Connect.on_connected}", $fb_app);
fb_connect_init_option('ifUserNotConnected', "{FB_Connect.on_not_connected}", $fb_app);
// Add button to the form.
$form['fb_connect_button'] = array(
'#type' => 'markup',
'#value' => 'Connect with Facebook',
'#prefix' => '',
'#suffix' => '
',
'#weight' => 4, // LOG IN button weight is 2.
);
}
if ($form_id == 'user_login') {
// On login, we must leave the user/login page or else get access denied.
drupal_add_js(array('fb_connect' => array('destination' => url('user'))), 'setting');
}
}
}
/**
* Implementation of hook_nodeapi().
*
* Set a variable if this is the primary connect app.
*/
function fb_connect_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
if (($op == 'insert' || $op == 'update') && $node->type == 'fb_app') {
//dpm(func_get_args(), "fb_connect_nodeapi($op)"); // debug
if ($node->fb_app_data['fb_connect']['primary']) {
variable_set(FB_CONNECT_VAR_PRIMARY, $node->nid);
drupal_set_message(t('!node is the primary Facebook Connect application.', array('!node' => l($node->title, 'node/' . $node->nid))));
}
else if ($node->nid == variable_get(FB_CONNECT_VAR_PRIMARY, NULL)) {
// This app was the primary one, but the user has unchecked it.
variable_set(FB_CONNECT_VAR_PRIMARY, NULL);
}
}
}
/**
* Implementation of hook_theme_registry_alter().
*
* Override theme functions for things that can be displayed using
* XFBML. Currently overriding username and user_picture. We rename
* the original entries, as we will use them for users without
* javascript enabled.
*
* This hook is not well documented. Who knows what its supposed to
* return? No doubt this will need updating with each new version of
* Drupal.
*/
function fb_connect_theme_registry_alter(&$theme_registry) {
// Ideally, we'd do this only on themes which will certainly be used for facebook connect pages.
if (variable_get(FB_CONNECT_VAR_THEME_USERNAME_2, TRUE) ||
(variable_get(FB_CONNECT_VAR_THEME_USERNAME_1, TRUE) &&
$theme_registry['username']['type'] == 'module')) {
// Re-register the original theme function under a new name.
$theme_registry['fb_connect_username_orig'] = $theme_registry['username'];
// Override theme username
$theme_registry['username'] = array(
'arguments' => array('object' => NULL),
'function' => 'fb_connect_theme_username_override',
'type' => 'module',
);
}
if (variable_get(FB_CONNECT_VAR_THEME_USERPIC_2, TRUE) ||
(variable_get(FB_CONNECT_VAR_THEME_USERPIC_1, TRUE) &&
$theme_registry['user_picture']['type'] == 'module')) {
// Re-register the original theme function under a new name.
$theme_registry['fb_connect_user_picture_orig'] = $theme_registry['user_picture'];
// Override theme username
$theme_registry['user_picture'] = array(
'arguments' => array('account' => NULL),
'function' => 'fb_connect_theme_user_picture_override',
'type' => 'module',
);
}
}
/**
* Our replacement for theme('user_picture', ...)
*/
function fb_connect_theme_user_picture_override($account) {
// Markup without fb_connect.
$orig = theme('fb_connect_user_picture_orig', $account);
// Make no changes to FBML pages.
if (fb_is_fbml_canvas()) {
return $orig;
}
// Respect Drupal's profile pic, if uploaded.
if (isset($account->picture) && $account->picture) {
$output = $orig;
}
else {
// First learn the Facebook id
if (isset($account->fbu)) {
$fbu = $account->fbu;
}
else if ($pos = strpos($account->name, '@facebook')) {
// One option is to load the user object and get the definitive fbu. But that's expensive, so we rely on the NNNNNN@facebook naming convention.
$fbu = substr($account->name, 0, $pos);
}
else {
// Sometimes the $account object is not an account at all. Could be a node for example.
// (There may be pages where this code is reached many times, and that could be a performance problem.)
$fbu = fb_get_fbu($account->uid);
}
if (!isset($fbu) || !$fbu)
$output = $orig;
else {
$output = theme('fb_connect_fbml_user_picture', $orig, $account, $fbu);
}
}
return $output;
}
/**
* Our replacement for theme('username', ...)
*/
function fb_connect_theme_username_override($object) {
// TODO: does this function need to account for canvas pages? Or can we assume every canvas page theme will override theme_username on its own?
$orig = theme('fb_connect_username_orig', $object);
// Make no changes to FBML pages.
if (fb_is_fbml_canvas()) {
return $orig;
}
else {
// Theme the username with XFBML, using original username as backup.
return fb_connect_fbml_username($object, $orig);
}
}
/**
* Helper function for themes to display the username.
*/
function fb_connect_fbml_username($object, $orig_username = NULL) {
if (!isset($orig_username))
// What to display if javascript disabled.
$orig_username = theme_username($object);
// First learn the Facebook id
if (isset($object->fbu)) {
$fbu = $object->fbu;
}
else if ($pos = strpos($object->name, '@facebook')) {
// One option is to load the user object and get the definitive fbu. But that's expensive, so we rely on the NNNNNN@facebook naming convention.
$fbu = substr($object->name, 0, $pos);
}
else {
// Experimental. This can be expensive on pages with many comments or nodes!
//$fbu = fb_get_fbu($object->uid);
}
if (isset($fbu) && is_numeric($fbu)) {
// Display both orig and XFBML, to degrade gracefully.
return theme('fb_connect_fbml_username', $orig_username, $object, $fbu);
}
else {
return $orig_username;
}
}
/**
* Implements hook_theme().
*
* We use theme function for XFBML username and picture so that the
* markup can be relatively easily customized.
*/
function fb_connect_theme() {
return array(
'fb_connect_fbml_username' => array(
'arguments' => array(
'orig_username' => NULL,
'object' => NULL,
'fbu' => NULL,
),
),
'fb_connect_fbml_user_picture' => array(
'arguments' => array(
'orig' => NULL,
'account' => NULL,
'fbu' => NULL,
),
),
'fb_connect_fbml_popup' => array(
'arguments' => array('elements' => NULL),
),
);
}
function theme_fb_connect_fbml_username($orig_username, $object, $fbu) {
$fbml = "";
$wrap_pre = "$orig_username";
$wrap_post = "\n";
if ($object->uid) {
// Provide link if local account.
$wrap_pre = $wrap_pre . '';
$wrap_post = '' . $wrap_post;
}
return $wrap_pre . $fbml . $wrap_post;
}
function theme_fb_connect_fbml_user_picture($orig, $account, $fbu) {
$output = ''; // Build the markup.
// First, the markup if javascript is disabled, degrade gracefully.
if ($orig)
$output .= ''.$orig.'';
// Next markup that will be made visible by javascript.
$output .= '';
return $output;
}
function theme_fb_connect_fbml_popup($elem) {
// Hide this markup until javascript shows it.
$t = '\n";
return $t;
}