data-namespace attribute for <div class="plugin__filelisting">

This commit adds data-namespace attribute for top level div of the plugin. The attribute is later used by dropfiles plugin to determine the "root" namespace of the filelisting widget.

helper.php

@@ -25,6 +25,7 @@ public function tpl_filelisting($print = true, $ns = NULL) {
         if (is_null($ns)) $ns = getNS($INFO['id']);
 
         if ($ns == false) {
+            $ns = ':';
             $ns_string = '[' . $lang['mediaroot'] . ']';
         } else {
             $ns_string = $ns;
@@ -38,7 +39,7 @@ public function tpl_filelisting($print = true, $ns = NULL) {
         $colgroup .= '<col style="width: 35%;">';
         $colgroup .= '</colgroup>';
 
-        $ret = '<div class="plugin__filelisting">';
+        $ret = '<div class="plugin__filelisting" data-namespace="' . $ns . '">';
 
         $ret .= '<div class="plugin__filelisting_capiton">';
         $ret .= sprintf($this->getLang('files_in_namespace'), $ns_string);

plugin.info.txt

@@ -1,7 +1,7 @@
 base   filelisting
 author Szymon Olewniczak
 email  dokuwiki@cosmocode.de
-date   2019-07-09
+date   2020-03-18
 name   filelisting plugin
 desc   List files in currently viewed namespaces
 url    http://www.dokuwiki.org/plugin:filelisting

syntax.php

@@ -70,8 +70,12 @@ public function render($mode, Doku_Renderer $renderer, $data) {
         $cur_ns = getNS($INFO['id']);
 
         list($ns) = $data;
-        if($ns === '') $ns = $cur_ns;
-        $ns = resolve_id($cur_ns, $ns);
+        if(empty($ns)) {
+            $ns = $cur_ns;
+        } else {
+            $ns = resolve_id($cur_ns, $ns);
+        }
+
 
         if ($mode == 'metadata') {
             $dir = str_replace(':','/',$ns);