error handling in offline management interface

git-svn-id: svn://svn.open-ils.org/ILS/trunk@4917 dcc99617-32d9-48b4-a31d-7c20da2025e4

diff --git a/Open-ILS/xul/staff_client/server/admin/offline_manage_xacts.js b/Open-ILS/xul/staff_client/server/admin/offline_manage_xacts.js
index d21fddc..0f7e8b7 100644 (file)
--- a/Open-ILS/xul/staff_client/server/admin/offline_manage_xacts.js
+++ b/Open-ILS/xul/staff_client/server/admin/offline_manage_xacts.js
@@ -540,23 +540,33 @@ admin.offline_manage_xacts.prototype = {
 
                var obj = this;
 
-               obj.data.stash_retrieve();
+               try {
 
-               var url = xulG.url_prefix(urls.XUL_OFFLINE_MANAGE_XACTS_CGI) 
-                       + "?ses=" + window.escape(ses())
-                       + "&action=status"
-                       + "&org=" + window.escape(obj.data.list.au[0].ws_ou())
-                       + "&status_type=sessions";
-               var x = new XMLHttpRequest();
-               x.open("GET",url,false);
-               x.send(null);
+                       obj.data.stash_retrieve();
 
-               dump(url + ' = ' + x.responseText + '\n' );
-               obj.seslist = JSON2js( x.responseText ).sort(
-                       function(a,b) {
-                               return b.create_time - a.create_time;
-                       }
-               );
+                       var url = xulG.url_prefix(urls.XUL_OFFLINE_MANAGE_XACTS_CGI) 
+                               + "?ses=" + window.escape(ses())
+                               + "&action=status"
+                               + "&org=" + window.escape(obj.data.list.au[0].ws_ou())
+                               + "&status_type=sessions";
+                       var x = new XMLHttpRequest();
+                       x.open("GET",url,false);
+                       x.send(null);
+
+                       dump(url + ' = ' + x.responseText + '\n' );
+
+                       var robj = JSON2js( x.responseText );
+                       if (typeof robj.ilsevent != 'undefined') throw(robj);
+
+                       obj.seslist = robj.sort(
+                               function(a,b) {
+                                       return b.create_time - a.create_time;
+                               }
+                       );
+
+               } catch(E) {
+                       obj.error.standard_unexpected_error_alert('Error retrieving offline sessions.',E);
+               }
        },
 
        'render_seslist' : function() {