added elfinder module

sites/all/libraries/elfinder/php/elFinderVolumeTrash.class.php

@@ -0,0 +1,50 @@
+<?php
+/**
+ * elFinder driver for trash bin at local filesystem.
+ *
+ * @author NaokiSawada
+ **/
+class elFinderVolumeTrash extends elFinderVolumeLocalFileSystem
+{
+    /**
+     * Driver id
+     * Must be started from letter and contains [a-z0-9]
+     * Used as part of volume id.
+     *
+     * @var string
+     **/
+    protected $driverId = 't';
+
+    public function __construct()
+    {
+        parent::__construct();
+        // original option of the Trash
+        $this->options['lockEverything'] = false; // Lock all items in the trash to disable delete, move, rename.
+
+        // common options as the volume driver
+        $this->options['alias'] = 'Trash';
+        $this->options['quarantine'] = '';
+        $this->options['rootCssClass'] = 'elfinder-navbar-root-trash';
+        $this->options['copyOverwrite'] = false;
+        $this->options['uiCmdMap'] = array('paste' => 'hidden', 'mkdir' => 'hidden', 'copy' => 'restore');
+        $this->options['disabled'] = array('archive', 'duplicate', 'edit', 'extract', 'mkfile', 'places', 'put', 'rename', 'resize', 'upload');
+    }
+
+    public function mount(array $opts)
+    {
+        if ($this->options['lockEverything']) {
+            if (!is_array($opts['attributes'])) {
+                $opts['attributes'] = array();
+            }
+            $attr = array(
+                'pattern' => '/./',
+                'locked' => true,
+            );
+            array_unshift($opts['attributes'], $attr);
+        }
+        // force set `copyJoin` to true
+        $opts['copyJoin'] = true;
+
+        return parent::mount($opts);
+    }
+}