Untitled

<?php

// ---------------------------------- \\
// @Zula Framework Event Feedback
// @License: http://www.gnu.org/copyleft/gpl.html GNU/GPL 2
// @Author: Alex Cartwright
// @Created: 24th June 2007
// ---------------------------------- \\

	/**
	 Event Feedback allows controllers to register an event,
	 such as an error, or succsess message that needs to be
	 displayed to the user. Such as 'Added Menu Item'.
	**/
	class Event {
		
		const SHOW_ERRORS = 1;
		const SHOW_SUCCESS = 2;
		const SHOW_ALL = 3;
		
		//---
		// Constructor function
		//---
		public function __construct() {
			$_SESSION['event_feedback']['error'] = array();
			$_SESSION['event_feedback']['success'] = array();
		}
		
		//---
		// Error() stores a error into the session array
		// @param string $error
		// @return bool
		//---
		public function error( $error ) {
			if ( !is_string( $error ) || empty( $error ) ) {
				return false;
			}
			$_SESSION['event_feedback']['error'][] = $error;
			return true;
		}
		
		//---
		// Success() stores a success message into sesson array
		// @param string $message
		// @return bool
		//---
		public function success( $message ) {
			if ( !is_string( $message ) || empty( $message ) ) {
				return false;
			}
			$_SESSION['event_feedback']['success'][] = $message;
			Log::message( $message, Log::L_EVENT );
			return true;
		}
		
		//---
		// output() formats the stored messages and then returns them
		// it can also filter to show only Errors, or only Success - or both.
		// [@param int $filter]
		// @return string
		//---
		public function output( $filter=Event::SHOW_ALL ) {
			$output = '';
			if ( $filter & Event::SHOW_ERRORS && is_array( $_SESSION['event_feedback']['error'] ) && !empty( $_SESSION['event_feedback']['error'] ) ) {
				$errors = array_unique( $_SESSION['event_feedback']['error'] );
				$output .= '<div id="event-error">'.implode_adv( $errors, '<p>', '</p>' ).'</div>';
				unset( $_SESSION['event_feedback']['error'] );
			}
			if ( $filter & Event::SHOW_ERRORS && isset( $_SESSION['event_feedback']['success'] ) && !empty( $_SESSION['event_feedback']['success'] ) ) {
				$success = array_unique( $_SESSION['event_feedback']['success'] );
				$output .= '<div id="event-success">'.implode_adv( $success, '<p>', '</p>' ).'</div>';
				unset( $_SESSION['event_feedback']['success'] );
			}
			return $output;
		}		
		
	}
	
?>