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Edit File: elFinderVolumeTrash.class.php

<?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);
    }
}