/**
* 渲染指定的视图文件
*
* 渲染时，视图要使用的数据保存在控件的 $_view 属性中。
*
* @param string $filename
* @param array $more_vars
*
* @return string
*/
protected function _fetchView($filename, array $more_vars = null)
{
$vars = $this->_view;
$vars['_ctx'] = $this->_context;
$vars['_CTL_ID'] = $this->id();
$vars['_BASE_DIR'] = $this->_context->baseDir();
$vars['_BASE_URI'] = $this->_context->baseUri();
$vars['_REQUEST_URI'] = $this->_context->requestUri();
if (is_array($more_vars)) {
$vars = array_merge($vars, $more_vars);
}
//if (is_null($this->_render))
//{
$this->_render = new $this->_render_class(dirname($filename));
//}
$this->_render->vars($vars);
$extname = pathinfo($filename, PATHINFO_EXTENSION);
$pextname = $this->_render->extname();
if (empty($extname) || $extname != $pextname && !empty($pextname)) {
$filename .= '.' . ($pextname ? $pextname : 'php');
}
return $this->_render->parse($filename);
}
