class-admin-messages.php
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<?php
/**
* Class MC4WP_Admin_Messages
*
* @ignore
* @since 3.0
*/
class MC4WP_Admin_Messages
{
/**
* @var array
*/
protected $bag;
/**
* @var bool
*/
protected $dirty = false;
/**
* Add hooks
*/
public function add_hooks()
{
add_action('admin_notices', array( $this, 'show' ));
register_shutdown_function(array( $this, 'save' ));
}
private function load()
{
if (is_null($this->bag)) {
$this->bag = get_option('mc4wp_flash_messages', array());
}
}
// empty flash bag
private function reset()
{
$this->bag = array();
$this->dirty = true;
}
/**
* Flash a message (shows on next pageload)
*
* @param $message
* @param string $type
*/
public function flash($message, $type = 'success')
{
$this->load();
$this->bag[] = array(
'text' => $message,
'type' => $type,
);
$this->dirty = true;
}
/**
* Show queued flash messages
*/
public function show()
{
$this->load();
foreach ($this->bag as $message) {
echo sprintf('<div class="notice notice-%s is-dismissible"><p>%s</p></div>', $message['type'], $message['text']);
}
$this->reset();
}
/**
* Save queued messages
*
* @hooked `shutdown`
*/
public function save()
{
if ($this->dirty) {
update_option('mc4wp_flash_messages', $this->bag, false);
}
}
}