Bug 695514: Slow performance in field-events.js.tmpl on show_bug.cgi with large number of products

template/en/default/bug/create/create.html.tmpl

@@ -231,7 +231,7 @@ TUI_hide_default('attachment_text_field');
       <script type="text/javascript">
        <!--
          [%+ INCLUDE "bug/field-events.js.tmpl" 
-                    field = bug_fields.component %]
+                     field = bug_fields.component, product = product %]
        //-->
        </script>
     </td>

template/en/default/bug/field-events.js.tmpl

@@ -8,6 +8,8 @@
 
 [%# INTERFACE:
   #   field: a Bugzilla::Field object
+  #   product: (optional) a Bugzilla::Product object. When specified,
+  #            components are restricted to this product.
   #%]
 
 [% FOREACH controlled_field = field.controls_visibility_of %]
@@ -18,7 +20,15 @@
   [%- END %]
   ]);
 [% END %]
-[% FOREACH legal_value = field.legal_values %]
+
+[% legal_values = [] %]
+[% IF field.name == "component" AND product %]
+  [% legal_values = product.components %]
+[% ELSE %]
+  [% legal_values = field.legal_values %]
+[% END %]
+
+[% FOREACH legal_value = legal_values %]
   [% FOREACH controlled_field = legal_value.controlled_values.keys %]
     [% SET cont_ids = [] %]
     [% FOREACH val = legal_value.controlled_values.$controlled_field %]

template/en/default/bug/field.html.tmpl

@@ -133,7 +133,8 @@
         <script type="text/javascript">
         <!--
           initHidingOptionsForIE('[% field.name FILTER js %]');
-          [%+ INCLUDE "bug/field-events.js.tmpl" field = field %]
+          [%+ INCLUDE "bug/field-events.js.tmpl"
+                      field = field, product = bug.product_obj %]
         //-->
         </script>