public static function instance()
 {
     if (self::$instance == null) {
         self::$instance = new ModuleManager();
     }
     return self::$instance;
 }

 public function body()
 {
     $t = $this->pack_module('Base/Theme');
     //caption
     $box_module = ModuleManager::get_instance('/Base_Box|0');
     if ($box_module) {
         $active_module = $box_module->get_main_module();
     }
     if ($active_module && is_callable(array($active_module, 'caption'))) {
         $caption = $active_module->caption();
         if (Variable::get('show_module_indicator')) {
             $t->assign('text', $caption);
         } else {
             $t->assign('text', '');
         }
         $show_caption = Variable::get('show_caption_in_title');
         $maintenance_mode = MaintenanceMode::is_on() ? ' (Maintenance mode)' : '';
         $base_title = Variable::get('base_page_title') . $maintenance_mode;
         if ($show_caption || strlen($base_title) > 0) {
             if ($show_caption && strlen($base_title) > 0) {
                 $caption = $base_title . ' - ' . $caption;
             } elseif (strlen($base_title) > 0) {
                 $caption = $base_title;
             }
             eval_js('document.title=\'' . addslashes($caption) . '\'');
         }
     } else {
         $t->assign('text', '');
         eval_js('document.title=\'' . addslashes(Variable::get('base_page_title')) . '\'');
     }
     $t->display();
 }

 public static function submit_contact($values, $mode)
 {
     if ($mode == 'display') {
         $ret = array();
         $in = self::Instance();
         $filename = self::get_photo($values['id']);
         if ($filename) {
             $file = $in->get_data_dir() . $filename;
         } else {
             $file = Base_ThemeCommon::get_template_file('CRM/Contacts/Photo', 'placeholder.png');
             $ret['photo_note'] = __('Click to change');
         }
         $ret['photo_link'] = Module::create_href(array('upload_new_photo' => $values['id'])) . ' ' . Utils_TooltipCommon::open_tag_attrs(__('Click to change the photo'), false);
         $ret['photo_src'] = $file;
     } else {
         $ret = $values;
     }
     if (isset($_REQUEST['upload_new_photo']) && $_REQUEST['upload_new_photo'] == $values['id']) {
         unset($_REQUEST['upload_new_photo']);
         $x = ModuleManager::get_instance('/Base_Box|0');
         if (!$x) {
             trigger_error('There is no base box module instance', E_USER_ERROR);
         }
         $x->push_main('CRM/Contacts/Photo', 'body', array($values));
     }
     return $ret;
 }

function mobile_menu()
{
    $menus = ModuleManager::call_common_methods('mobile_menu');
    global $menus_out, $menus_out_tmp;
    $menus_out = array();
    foreach ($menus as $m => $r) {
        if (!is_array($r)) {
            continue;
        }
        foreach ($r as $cap => $met) {
            if (is_array($met)) {
                if (!isset($met['func'])) {
                    continue;
                }
                $method = array($m . 'Common', $met['func']);
                $args = isset($met['args']) ? $met['args'] : array();
                $weight = isset($met['weight']) ? $met['weight'] : 0;
                $color = isset($met['color']) ? $met['color'] : 'white';
            } else {
                $method = array($m . 'Common', $met);
                $args = array();
                $weight = 0;
                $color = 'white';
            }
            $menus_out[$cap] = array($method, $args, $weight, $color);
        }
    }
    $menus_out_tmp = $menus_out;
    uksort($menus_out, 'sort_menus_cmp');
    foreach ($menus_out as $cap => $met) {
        print '<a ' . mobile_stack_href($met[0], $met[1], $cap) . ' ' . (IPHONE ? ' class="button ' . $met[3] . '"' : '') . '>' . $cap . '</a>' . (IPHONE ? '' : '<br>');
    }
}

 public static function get_installed_applets_html()
 {
     $colors = Base_DashboardCommon::get_available_colors();
     $app_cap = ModuleManager::call_common_methods('applet_caption');
     asort($app_cap);
     $app_info = ModuleManager::call_common_methods('applet_info');
     $html = '';
     foreach ($app_cap as $name => $cap) {
         if (!$cap) {
             continue;
         }
         $th = Base_ThemeCommon::init_smarty();
         $id = str_replace('_', '-', $name);
         if (!isset($app_info[$name])) {
             $app_info[$name] = '';
         }
         $th->assign('content', '<div class="content" style="padding:4px;" id="dashboard_applet_content_' . $id . '">' . $app_info[$name] . '</div>');
         $th->assign('handle_class', 'handle');
         $th->assign('caption', $cap);
         $th->assign('color', $colors[0]['class']);
         $remove_button = Base_DashboardCommon::get_remove_applet_button($id, false);
         $th->assign('remove', $remove_button);
         $th->assign('__link', array('remove' => Base_ThemeCommon::parse_links('remove', $remove_button)));
         //print('<xmp>'.self::get_remove_applet_button(null, false).'</xmp><br>');
         $th->assign('actions', array());
         $th->assign('config_mode', true);
         $html .= '<div class="applet" searchkey="' . strtolower($cap ? $cap : $name) . ';' . strtolower($app_info[$name]) . '" id="ab_item_' . 'new_' . $id . '">';
         ob_start();
         Base_ThemeCommon::display_smarty($th, 'Base_Dashboard', 'default');
         $html .= ob_get_clean();
         $html .= '</div>';
     }
     return $html;
 }

 protected function format_values($tab, $record_id)
 {
     $rb_obj = new RBO_RecordsetAccessor($tab);
     $record = $rb_obj->get_record($record_id);
     if (!$record) {
         return array();
     }
     $access = Utils_RecordBrowserCommon::get_access($tab, 'view', $record);
     if (!$access) {
         return array();
     }
     // use RB object instance for better display callback compatibility
     // some of them uses Utils_RecordBrowser::$rb_obj instance
     $rb = ModuleManager::new_instance('Utils_RecordBrowser', null, 'rb');
     $rb->construct($tab);
     $rb->init($tab);
     $fields = Utils_RecordBrowserCommon::init($tab);
     $printable_data = array();
     foreach ($fields as $f) {
         if ($access[$f['id']]) {
             $printable_data[] = array('label' => _V($f['name']), 'value' => $record->get_val($f['id'], true));
         }
     }
     // fill rows - it's easier here than in template
     if ($this->fill_empty_rows()) {
         while (count($printable_data) % $this->cols() != 0) {
             $printable_data[] = array('label' => '', 'value' => '');
         }
     }
     return $printable_data;
 }

/**
 * Perform database initialization.
 *
 * @param boolean $create_database
 * @return boolean
 */
function database_initialize($create_database)
{
    global $db, $db_config, $data_path;
    $result = false;
    $database_exists = false;
    $sql_file = 'units/database/init.sql';
    $xml_file = $data_path . 'system_init.xml';
    if (!file_exists($sql_file) || !file_exists($xml_file)) {
        trigger_error('Can not initialize database, missing configuration!', E_USER_ERROR);
        return $result;
    }
    // make a log entry
    trigger_error('Initializing database: ' . $db_config['name'], E_USER_NOTICE);
    // get initialization SQL
    $sql = file_get_contents($sql_file);
    // create database if needed
    if ($create_database) {
        try {
            $db->create($db_config['name']);
            $db->select($db_config['name']);
            $database_exists = true;
        } catch (Exception $error) {
            $database_exists = false;
        }
    } else {
        $database_exists = true;
    }
    // create database
    if ($database_exists && $db->multi_query($sql)) {
        $module_manager = ModuleManager::getInstance();
        $module_handler = ModuleHandler::getInstance();
        $admin_manager = UserManager::getInstance();
        // populate tables
        $raw_data = file_get_contents($xml_file);
        $data = new XMLParser($raw_data, $xml_file);
        $data->parse();
        // go over XML file and insert data
        foreach ($data->document->tagChildren as $item) {
            switch ($item->tagName) {
                case 'module':
                    // insert data
                    $module_manager->insertData(array('name' => $item->tagAttrs['name'], 'order' => $item->tagAttrs['order'], 'preload' => $item->tagAttrs['preload'] == 'yes' ? 1 : 0, 'active' => 1));
                    // initialize module
                    $module = $module_handler->_loadModule($item->tagAttrs['name']);
                    if (!is_null($module)) {
                        $module->onInit();
                    }
                    break;
                case 'user':
                    $salt = hash('sha256', UserManager::SALT . strval(time()));
                    $password = hash_hmac('sha256', $item->tagAttrs['password'], $salt);
                    $admin_manager->insertData(array('username' => $item->tagAttrs['username'], 'password' => $password, 'fullname' => $item->tagAttrs['fullname'], 'level' => $item->tagAttrs['level'], 'verified' => 1, 'salt' => $salt));
                    break;
            }
        }
        // set result
        $result = true;
    }
    return $result;
}

 public function body()
 {
     ob_start();
     //create default module form
     print '<div class="title">Select modules to disable</div>';
     print 'Selected modules will be marked as not installed but uninstall methods will not be called. Any database tables and other modifications made by modules\' install methods will not be reverted.<br><br>';
     print 'To uninstall module please use Modules Administration in Application.';
     print '<hr/><br/>';
     $form = new HTML_QuickForm('modulesform', 'post', $_SERVER['PHP_SELF'] . '?' . http_build_query($_GET), '', null, true);
     $states = array(ModuleManager::MODULE_ENABLED => 'Active', ModuleManager::MODULE_DISABLED => 'Inactive');
     $modules = DB::GetAssoc('SELECT * FROM modules ORDER BY state, name');
     foreach ($modules as $m) {
         $name = $m['name'];
         $state = isset($m['state']) ? $m['state'] : ModuleManager::MODULE_ENABLED;
         if ($state == ModuleManager::MODULE_NOT_FOUND) {
             $state = ModuleManager::MODULE_DISABLED;
         }
         $form->addElement('select', $name, $name, $states);
         $form->setDefaults(array($name => $state));
     }
     $form->addElement('button', 'submit_button', 'Save', array('class' => 'button', 'onclick' => 'if(confirm("Are you sure?")) document.modulesform.submit();'));
     //validation or display
     if ($form->validate()) {
         //uninstall
         $vals = $form->exportValues();
         foreach ($vals as $k => $v) {
             if (isset($modules[$k]['state']) && $modules[$k]['state'] != $v) {
                 ModuleManager::set_module_state($k, $v);
             }
         }
     }
     $form->display();
     return ob_get_clean();
 }

 public static function user_settings()
 {
     if (Acl::is_user()) {
         $methods = array('none' => __('None'), 'callto' => __('Skype and other "callto" protocol applications')) + ModuleManager::call_common_methods('dialer_description');
         return array(__('Dialing') => array(array('name' => 'method', 'label' => __('Dialing Method'), 'type' => 'select', 'values' => $methods, 'default' => 'none')), __('Misc') => array(array('name' => 'default_record_permission', 'label' => __('Default Records Permission'), 'type' => 'select', 'default' => 0, 'values' => Utils_CommonDataCommon::get_translated_array('CRM/Access', false))));
     }
     return array();
 }

 public function back_to_calendar()
 {
     $x = ModuleManager::get_instance('/Base_Box|0');
     if (!$x) {
         trigger_error('There is no base box module instance', E_USER_ERROR);
     }
     $x->pop_main();
 }

 public function push_box0($func, $args, $const_args)
 {
     $x = ModuleManager::get_instance('/Base_Box|0');
     if (!$x) {
         trigger_error('There is no base box module instance', E_USER_ERROR);
     }
     $x->push_main('Utils/Messenger', $func, $args, $const_args);
 }

 public function action()
 {
     set_time_limit(0);
     Cache::clear();
     ModuleManager::create_common_cache();
     Base_ThemeCommon::themeup();
     return true;
 }

 public function manage_filters()
 {
     $x = ModuleManager::get_instance('/Base_Box|0');
     if (!$x) {
         trigger_error('There is no base box module instance', E_USER_ERROR);
     }
     $x->push_main($this->get_type(), 'edit', array(false));
 }

 public function install()
 {
     Base_ThemeCommon::install_default_theme($this->get_type());
     ModuleManager::include_common($this->get_type(), 0);
     Base_PrintCommon::register_document_type(new Base_Print_Document_HTML());
     Base_PrintCommon::register_document_type(new Base_Print_Document_PDF());
     return true;
 }

  /**
   * Initialising the ModuleManger
   *
   * The ModuleManager reads the possible Modules from the ModulesDirectory
   * @return ModuleManager
   */
	public static function getInstance()
	{
		if (!isset(self::$instance))
		{
                self::$instance = new ModuleManager();
            }
        return self::$instance;
	}

 /**
  * Build positions array into dropdown key => value format for CMS fields
  * @return array
  **/
 public static function get_positions_dropdown()
 {
     $array = [];
     foreach (ModuleManager::config()->positions as $position) {
         $array[$position] = $position;
     }
     return $array;
 }

 /**
  * Flushes all application cache data
  */
 public function actionFlush()
 {
     Yii::app()->cache->flush();
     ModuleManager::flushCache();
     if (Yii::app()->cache instanceof CApcCache) {
         print "Warning: Could not flush APC Cache! - Restart Webserver!\n";
     }
     print "All application caches flushed!\n";
 }

 public function this_stack()
 {
     $x = ModuleManager::get_instance('/Base_Box|0');
     if (!$x) {
         trigger_error('There is no base box module instance', E_USER_ERROR);
     }
     $x->push_main('Tests/Callbacks', 'body');
     return true;
 }

 public static function get_notifications()
 {
     $module = 'Base_Notify';
     $notifications_date = Base_User_SettingsCommon::get($module, 'last_update');
     if (!$notifications_date) {
         $notifications_date = time() - self::reset_time * 3600;
     }
     Base_User_SettingsCommon::save($module, 'last_update', time());
     return ModuleManager::call_common_methods('tray_notification', false, array($notifications_date));
 }

 public function install()
 {
     Base_ThemeCommon::install_default_theme('CRM/Contacts/Photo');
     Utils_RecordBrowserCommon::set_tpl('contact', Base_ThemeCommon::get_template_filename('CRM/Contacts/Photo', 'Contact'));
     Utils_RecordBrowserCommon::register_processing_callback('contact', array('CRM_Contacts_PhotoCommon', 'submit_contact'));
     $this->create_data_dir();
     ModuleManager::include_common('CRM_Contacts_Photo', 0);
     DB::CreateTable(CRM_Contacts_PhotoCommon::table_name, 'contact_id I4 KEY,' . 'filename C(48) NOTNULL');
     return true;
 }