added elfinder module

sites/all/libraries/elfinder/php/elFinderSessionInterface.php

@@ -0,0 +1,59 @@
+<?php
+
+/**
+ * elFinder - file manager for web.
+ * Session Wrapper Interface.
+ *
+ * @package elfinder
+ * @author Naoki Sawada
+ **/
+
+interface elFinderSessionInterface
+{
+	/**
+	 * Session start
+	 *
+	 * @return  self
+	 **/
+	public function start();
+	
+	/**
+	 * Session write & close
+	 *
+	 * @return  self
+	 **/
+	public function close();
+	
+	/**
+	 * Get session data
+	 *
+	 * This method must be equipped with an automatic start / close.
+	 *
+	 * @param   string  $key   Target key
+	 * @param   mixed   $empty Return value of if session target key does not exist
+	 *
+	 * @return  mixed
+	 **/
+	public function get($key, $empty = '');
+	
+	/**
+	 * Set session data
+	 *
+	 * This method must be equipped with an automatic start / close.
+	 *
+	 * @param   string  $key   Target key
+	 * @param   mixed   $data  Value
+	 *
+	 * @return  self
+	 **/
+	public function set($key, $data);
+	
+	/**
+	 * Get session data
+	 *
+	 * @param   string  $key   Target key
+	 *
+	 * @return  self
+	 **/
+	public function remove($key);
+}