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diff --git a/lib/viewers/pdf.php b/lib/viewers/pdf.php
index 1c80f91..cd69619 100644
--- a/lib/viewers/pdf.php
+++ b/lib/viewers/pdf.php
@@ -1,67 +1,73 @@
<?php
/*
+--------------------------------------------------------------------------+
| This file is part of the Kolab File API |
| |
| Copyright (C) 2011-2013, Kolab Systems AG |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU Affero General Public License as published |
| by the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU Affero General Public License for more details. |
| |
| You should have received a copy of the GNU Affero General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/> |
+--------------------------------------------------------------------------+
| Author: Aleksander Machniak <machniak@kolabsys.com> |
+--------------------------------------------------------------------------+
*/
/**
* Class integrating PDF viewer from https://github.com/mozilla/pdf.js
*/
class file_viewer_pdf extends file_viewer
{
protected $mimetypes = array(
'application/pdf',
'application/x-pdf',
'application/acrobat',
'applications/vnd.pdf',
'text/pdf',
'text/x-pdf',
);
/**
* Class constructor
*
* @param file_api File API object
*/
public function __construct($api)
{
$this->api = $api;
$browser = $api->get_browser();
- // disable viewer in unsupported browsers
- if ($browser->ie && $browser->ver < 9) {
+ // disable viewer in unsupported browsers according to
+ // https://github.com/mozilla/pdf.js/wiki/Required-Browser-Features
+ if (($browser->ie && $browser->ver < 9)
+ || ($browser->opera && $browser->ver < 9.5)
+ || ($browser->chrome && $browser->ver < 24)
+ || ($browser->safari && $browser->ver < 5)
+ || ($browser->mz && $browser->ver < 6)
+ ) {
$this->mimetypes = array();
}
}
/**
* Return file viewer URL
*
* @param string $file File name
* @param string $mimetype File type
*/
public function href($file, $mimetype = null)
{
return file_utils::script_uri() . 'viewers/pdf/viewer.html'
. '?file=' . urlencode($this->api->file_url($file));
}
}

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