/**
* Load a file that defines the view script class and return that instance
*
* @param string $className The name of the view script class to get instance
* @param string $subdir View script subdirectory that contains the file
* @return boolean|ViewScript
* @throws ClassUndefinedException
*/
public static function getViewScriptInstance($className, $subdir = '')
{
$res = self::loadViewScript($className, $subdir);
if ($res == false) {
return false;
}
$instance = null;
if ($subdir) {
// if class name is added prefix.
$splited = explode('/', trim($subdir, '/'));
$splited[] = $className;
$prefixedClassName = implode('_', $splited);
$prefixedClassName = NameManager::toClass($prefixedClassName);
if (self::classExists($prefixedClassName)) {
$instance = new $prefixedClassName();
}
}
if ($instance === null) {
if (!self::classExists($className)) {
self::load('ClassUndefinedException', 'exception');
throw new ClassUndefinedException($className);
}
$instance = new $className();
}
return $instance;
}
/**
* Search error handler class and return its instance
*
* @param string $subdir
* @return ErrorHandlerStandard
*/
protected function _searchErrorHandler($subdir)
{
$controllerDir = PathManager::getControllerDirectory();
$dirs = array();
if ($subdir != '') {
$dirs = explode('/', trim($subdir, '/'));
}
$handler = null;
$path = '';
while (true) {
$path = $controllerDir;
if (count($dirs) > 0) {
$path .= '/' . implode('/', $dirs);
}
if (file_exists($path . '/error_handler.php')) {
require_once $path . '/error_handler.php';
$className = NameManager::toClass(implode('_', $dirs) . '_error_handler');
if (Loader::classExists($className)) {
$handler = new $className();
break;
} else {
if (Loader::classExists('ErrorHandler')) {
$handler = new ErrorHandler();
break;
}
}
}
if ($path == $controllerDir) {
break;
}
array_pop($dirs);
}
if (!$handler instanceof ErrorHandlerStandard) {
$handler = new ErrorHandlerStandard();
}
return $handler;
}
/**
* Create and return form layout element
*
* @param string $layoutTagName
* @return FormLayoutAbstract
* @throws FileNotExistException
*/
public function createLayout($layoutTagName)
{
$layoutClassName = NameManager::toClass('form_layout_' . trim(strtolower($layoutTagName)));
if (!Loader::classExists($layoutClassName)) {
$result = Loader::load($layoutClassName, 'html', true, false);
if ($result == false) {
$result = Loader::loadLibrary($layoutClassName);
if ($result == false) {
$fileName = NameManager::toPhpFile($layoutClassName);
require_once 'exception/file_not_exist_exception.php';
throw new FileNotExistException($fileName);
}
}
}
$layoutInstance = new $layoutClassName($this);
return $layoutInstance;
}
/**
* Create connection instance that extends PDO
*
* @return DbAdapterAbstract
* @throws Exception
*/
protected static function _connect()
{
$snake = 'db_adapter_' . strtolower(self::$_config['type']);
$adapterName = NameManager::toClass($snake);
Loader::load($adapterName, 'db');
if (!Loader::classExists($adapterName)) {
throw new ClassUndefinedException($adapterName);
}
$instance = new $adapterName(self::$_config);
return $instance;
}
