LP#1731278 Make webstaff grid column sort stable

As Remington Steed deduced, lack of stable sort in Chrome causes our
webstaff grid "explicit" columns to move around in the process of
sorting the other columns.

As a simplistic fix, let's first record the original order, then keep
any explicit columns in their original order.

Signed-off-by: Dan Wells <dbw2@calvin.edu>

diff --git a/Open-ILS/web/js/ui/default/staff/services/grid.js b/Open-ILS/web/js/ui/default/staff/services/grid.js
index fc3a05b..58b24dc 100644 (file)
--- a/Open-ILS/web/js/ui/default/staff/services/grid.js
+++ b/Open-ILS/web/js/ui/default/staff/services/grid.js
@@ -1496,8 +1496,19 @@ angular.module('egGridMod',
                         {idl_parent : idl_parent, idl_field : field, idl_class : class_obj, field_parent_label : old_field_label });
                 });
 
+                angular.forEach(cols.columns, function(col, i) {
+                    col.origPos = i;
+                });
                 cols.columns = cols.columns.sort(
                     function(a, b) {
+                        if (a.explicit && b.explicit) {
+                            if (a.origPos < b.origPos) {
+                                return -1;
+                            } else {
+                                return 1;
+                            }
+                        }
+
                         if (a.explicit) return -1;
                         if (b.explicit) return 1;