function print_head($_header = NULL)
{
trace('Enter');
/* Plugin hook: on_header_print_before
* Called before the HTML header is sent.
* Args: $html: A reference to the HTML header.
*/
$this->eventbus->emit('on_header_print_before', $this->api);
if ($_header) {
echo $_header;
} elseif (!headers_sent()) {
header('Content-Type: text/html; charset=utf-8');
header('Pragma: no-cache');
header('Cache-control: no-cache');
trace('rendering header');
include 'controllers/header_controller.class.php';
$header = new HeaderController($this->api);
$header->show($this->get_title());
trace('rendered header');
}
trace('printed header');
/* Plugin hook: on_header_print_after
* Called after the HTML header was sent.
* Args: none
*/
$this->eventbus->emit('on_header_print_after', $this->api);
trace('Leave');
}
