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<?php defined('SYSPATH') or die('No direct script access.');
/*
* This file is part of open source system FreenetIS
* and it is released under GPLv3 licence.
*
* More info about licence can be found:
* http://www.gnu.org/licenses/gpl-3.0.html
*
* More info about project can be found:
* http://www.freenetis.org/
*
*/

/**
* Helper for creating queue of status flash messages.
* Messages are stored into session var.
*
* @author Ondřej Fibich
* @package Helper
*/
class status
{
/** Status message type success */
const TYPE_SUCCESS = 0;
/** Status message type warning */
const TYPE_WARNING = 1;
/** Status message type error */
const TYPE_ERROR = 2;
/** Status message type info */
const TYPE_INFO = 3;
/** Session var name */
const SESSION_VAR_NAME = 'status_message';
/**
* CSS classes for message types
*
* @var array
*/
private static $css_classes = array
(
self::TYPE_SUCCESS => 'status_message_success',
self::TYPE_WARNING => 'status_message_warning',
self::TYPE_ERROR => 'status_message_error',
self::TYPE_INFO => 'status_message_info',
);
/**
* Adds success message to queue.
*
* @param string $message Info message
* @param string $translate Enable auto-translation of message
* @param array $args Arguments of message
*/
public static function success($message, $translate = TRUE, $args = array())
{
self::_add_message(self::TYPE_SUCCESS, $message, $translate, $args);
}
/**
* Adds warning message to queue.
*
* @param string $message Info message
* @param string $translate Enable auto-translation of message
* @param array $args Arguments of message
*/
public static function warning($message, $translate = TRUE, $args = array())
{
self::_add_message(self::TYPE_WARNING, $message, $translate, $args);
}
/**
* Adds error message to queue.
*
* @param string $message Info message
* @param string $translate Enable auto-translation of message
* @param array $args Arguments of message
*/
public static function error($message, $translate = TRUE, $args = array())
{
self::_add_message(self::TYPE_ERROR, $message, $translate, $args);
}
/**
* Adds info message to queue.
*
* @param string $message Info message
* @param string $translate Enable auto-translation of message
* @param array $args Arguments of message
*/
public static function info($message, $translate = TRUE, $args = array())
{
self::_add_message(self::TYPE_INFO, $message, $translate, $args);
}
/**
* Renders all messages stored in session queue
*
* @return string
*/
public static function render()
{
$messages = self::_get_once();
$rendered_messages = '';
foreach ($messages as $type => $message)
{
$class = @self::$css_classes[$type];
$rendered_messages .= "<div class=\"status-message $class\">$message</div>";
}
return $rendered_messages;
}
/**
* Adds message to session var in queue order
*
* @param integer $type Type of message (one of type constants)
* @param string $message Message to strore
* @param string $translate Enable auto-translation of message
* @param array $args Arguments of message
*/
private static function _add_message(
$type, $message, $translate = TRUE, $args = array())
{
if (!empty($message))
{
// translate if enabled
$message = ($translate) ? __($message, $args) : $message;
// merge old messages with new
$messages = self::_get_once() + array
(
$type => $message
);
// set message
Session::instance()->set_flash(self::SESSION_VAR_NAME, $messages);
}
}
/**
* Gets messages queue and deletes it from queue
*
* @return array
*/
private static function _get_once()
{
$messages = Session::instance()->get_once(self::SESSION_VAR_NAME);
if (is_array($messages))
{
return $messages;
}
return array();
}

}
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