egroupware/etemplate/inc/class.etemplate_widget_file.inc.php

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2011-09-02 00:07:30 +02:00
<?php
/**
* EGroupware - eTemplate serverside file upload widget
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Nathan Gray
* @copyright 2011 Nathan Gray
* @version $Id$
*/
/**
* eTemplate file upload widget
* Uses AJAX to send file(s) to server, and stores for submit
*/
class etemplate_widget_file extends etemplate_widget
{
public function __construct($xml='') {
if($xml) parent::__construct($xml);
}
/**
* Ajax callback to receive an incoming file
*
* The incoming file is moved from its temporary location (otherwise server will delete it) and
* the file information is stored into the widget's value. When the form is submitted, the information for all
* files uploaded is available in the returned $content array. Because files are uploaded asynchronously,
* submission should be quick.
*
* @note Currently, no attempt is made to clean up files automatically.
*/
public static function ajax_upload() {
$response = egw_json_response::get();
$request_id = str_replace(' ', '+', rawurldecode($_REQUEST['request_id']));
$widget_id = $_REQUEST['widget_id'];
if(!self::$request = etemplate_request::read($request_id)) {
$response->error("Could not read session");
return;
}
foreach ($_FILES as $field => $file) {
if ($file['error'] == UPLOAD_ERR_OK) {
if (is_dir($GLOBALS['egw_info']['server']['temp_dir']) && is_writable($GLOBALS['egw_info']['server']['temp_dir']))
{
$new_file = tempnam($GLOBALS['egw_info']['server']['temp_dir'],'egw_');
}
else
{
$new_file = $value['file']['tmp_name'].'+';
}
// Files come from ajax Base64 encoded
$handle = fopen($new_file, 'w');
list($prefix, $data) = explode(',', file_get_contents($file['tmp_name']));
$file['tmp_name'] = $new_file;
fwrite($handle, base64_decode($data));
fclose($handle);
// Store info for future submit
$data = egw_session::appsession($request_id.'_files');
$form_name = self::form_name($cname, $field);
$data[$form_name][] = $file;
egw_session::appsession($request_id.'_files','',$data);
}
}
}
/**
* Validate input
* Merge any already uploaded files into the content array
*
* @param string $cname current namespace
* @param array $content
* @param array &$validated=array() validated content
*/
public function validate($cname, array $content, &$validated=array())
{
$form_name = self::form_name($cname, $this->id);
$value = $value_in = self::get_array($content, $form_name);
$valid =& self::get_array($validated, $form_name, true);
$files = egw_session::appsession(self::$request->id().'_files');
$valid = $files[$form_name];
}
}
etemplate_widget::registerWidget('etemplate_widget_file', array('file'));