PHP Observer::getObserverList方法代码示例

function main()
{
    // get the uri string from the query
    $path = $_SERVER['QUERY_STRING'];
    // Make sure special characters are decoded (support non-western glyphs like japanese)
    $path = urldecode($path);
    // START processing $_GET variables
    // If we're NOT using mod_rewrite, we check for GET variables we need to integrate
    if (!USE_MOD_REWRITE && strpos($path, '?') !== false) {
        $_GET = array();
        // empty $_GET array since we're going to rebuild it
        list($path, $get_var) = explode('?', $path);
        $exploded_get = explode('&', $get_var);
        if (count($exploded_get)) {
            foreach ($exploded_get as $get) {
                list($key, $value) = explode('=', $get);
                $_GET[$key] = $value;
            }
        }
    } else {
        if (!USE_MOD_REWRITE && (strpos($path, '&') !== false || strpos($path, '=') !== false)) {
            $path = '/';
        }
    }
    // If we're using mod_rewrite, we should have a WOLFPAGE entry.
    if (USE_MOD_REWRITE && array_key_exists('WOLFPAGE', $_GET)) {
        $path = $_GET['WOLFPAGE'];
        unset($_GET['WOLFPAGE']);
    } else {
        if (USE_MOD_REWRITE) {
            // We're using mod_rewrite but don't have a WOLFPAGE entry, assume site root.
            $path = '/';
        }
    }
    // Needed to allow for ajax calls to backend
    if (array_key_exists('WOLFAJAX', $_GET)) {
        $path = '/' . ADMIN_DIR . $_GET['WOLFAJAX'];
        unset($_GET['WOLFAJAX']);
    }
    // END processing $_GET variables
    // remove suffix page if founded
    if (URL_SUFFIX !== '' and URL_SUFFIX !== '/') {
        $path = preg_replace('#^(.*)(' . URL_SUFFIX . ')$#i', "\$1", $path);
    }
    define('CURRENT_PATH', trim($path, '/'));
    // Alias for backward compatibility, this constant should no longer be used.
    define('CURRENT_URI', CURRENT_PATH);
    if ($path != null && $path[0] != '/') {
        $path = '/' . $path;
    }
    // Check if there's a custom route defined for this URI,
    // otherwise continue and assume page was requested.
    if (Dispatcher::hasRoute($path)) {
        Observer::notify('dispatch_route_found', $path);
        Dispatcher::dispatch($path);
        exit;
    }
    foreach (Observer::getObserverList('page_requested') as $callback) {
        $path = call_user_func_array($callback, array(&$path));
    }
    // this is where 80% of the things is done
    $page = Page::findByPath($path, true);
    // if we found it, display it!
    if (is_object($page)) {
        // If a page is in preview status, only display to logged in users
        if (Page::STATUS_PREVIEW == $page->status_id) {
            AuthUser::load();
            if (!AuthUser::isLoggedIn() || !AuthUser::hasPermission('page_view')) {
                pageNotFound($path);
            }
        }
        // If page needs login, redirect to login
        if ($page->getLoginNeeded() == Page::LOGIN_REQUIRED) {
            AuthUser::load();
            if (!AuthUser::isLoggedIn()) {
                Flash::set('redirect', $page->url());
                redirect(URL_PUBLIC . (USE_MOD_REWRITE ? '' : '?/') . ADMIN_DIR . '/login');
            }
        }
        Observer::notify('page_found', $page);
        $page->_executeLayout();
    } else {
        pageNotFound($path);
    }
}

 /**
  * Hack for the page not found plugin.
  */
 public static function page_not_found_hack()
 {
     // only throw exception if main page has been found
     if (defined('page_found') && page_found == true) {
         throw new Exception('Page not found!');
     }
     // call other observer methods first
     $observerList = Observer::getObserverList('page_not_found');
     unset($observerList['behavior_page_not_found']);
     $alreadyCalled = true;
     foreach ($observerList as $callback) {
         if ($callback == 'FrogTagsHacks::page_not_found_hack') {
             $alreadyCalled = false;
         } elseif (!$alreadyCalled) {
             call_user_func($callback);
         }
     }
     if (function_exists('behavior_page_not_found')) {
         global $__FROG_CONN__;
         $query = 'SELECT slug FROM ' . TABLE_PREFIX . "page WHERE behavior_id='page_not_found'";
         $statement = $__FROG_CONN__->prepare($query);
         $statement->execute();
         if ($page = $statement->fetchObject()) {
             $page = find_page_by_uri($page->slug);
             if (is_object($page)) {
                 header("HTTP/1.0 404 Not Found");
                 header("Status: 404 Not Found");
                 frog_tags_main($page);
                 exit;
             }
         }
     }
 }