From 684bee48e1356c46aee7c1366c6ac03629528231 Mon Sep 17 00:00:00 2001
From: Frédéric Buclin <LpSolit@gmail.com>
Date: Thu, 6 Aug 2015 16:56:24 +0200
Subject: Bug 1183398: Mandatory custom fields block form submission if they
 are hidden and have no value r=gerv a=dkl

---
 js/field.js                                   | 13 +++++++++++-
 template/en/default/bug/field.html.tmpl       | 30 ++++++++++++++++-----------
 template/en/default/global/textarea.html.tmpl |  4 +++-
 3 files changed, 33 insertions(+), 14 deletions(-)

diff --git a/js/field.js b/js/field.js
index 5a48db471..5055c003e 100644
--- a/js/field.js
+++ b/js/field.js
@@ -506,7 +506,8 @@ function handleVisControllerValueChange(e, args) {
     var controller = args[1];
     var values = args[2];
 
-    var label_container = 
+    var field = document.getElementById(controlled_id);
+    var label_container =
         document.getElementById('field_label_' + controlled_id);
     var field_container =
         document.getElementById('field_container_' + controlled_id);
@@ -521,10 +522,20 @@ function handleVisControllerValueChange(e, args) {
     if (selected) {
         YAHOO.util.Dom.removeClass(label_container, 'bz_hidden_field');
         YAHOO.util.Dom.removeClass(field_container, 'bz_hidden_field');
+        // Restore the 'required' attribute for mandatory fields.
+        if (field.getAttribute('data-required') == "true") {
+            field.setAttribute('required', 'true');
+            field.setAttribute('aria-required', 'true');
+        }
     }
     else {
         YAHOO.util.Dom.addClass(label_container, 'bz_hidden_field');
         YAHOO.util.Dom.addClass(field_container, 'bz_hidden_field');
+        // A hidden field must never be required, because the user cannot set it.
+        if (field.getAttribute('data-required') == "true") {
+            field.removeAttribute('required');
+            field.removeAttribute('aria-required');
+        }
     }
 }
 
diff --git a/template/en/default/bug/field.html.tmpl b/template/en/default/bug/field.html.tmpl
index bfd385f9d..85f7aea33 100644
--- a/template/en/default/bug/field.html.tmpl
+++ b/template/en/default/bug/field.html.tmpl
@@ -43,13 +43,17 @@
                value="[% value FILTER html %]" size="40"
                maxlength="[% constants.MAX_FREETEXT_LENGTH FILTER none %]"
                [% IF field.type == constants.FIELD_TYPE_INTEGER %] pattern="\d+[% IF dontchange %]|[% dontchange FILTER html %][% END %]" [% END %]
-               [% ' aria-required="true" required' IF field.is_mandatory %]>
+               [% IF field.is_mandatory %]
+                 data-required="true" [% 'aria-required="true" required' UNLESS field_hidden %]
+               [% END %]>
     [% CASE [constants.FIELD_TYPE_DATETIME, constants.FIELD_TYPE_DATE] %]
       [% size = (field.type == constants.FIELD_TYPE_DATE) ? 10 : 20 %]
       <input name="[% field.name FILTER html %]" size="[% size FILTER none %]"
              id="[% field.name FILTER html %]"
              value="[% value FILTER html %]"
-             [% ' aria-required="true" required' IF field.is_mandatory %]
+             [% IF field.is_mandatory %]
+               data-required="true" [% 'aria-required="true" required' UNLESS field_hidden %]
+             [% END %]
              onchange="updateCalendarFromField(this)">
       <button type="button" class="calendar_button"
               id="button_calendar_[% field.name FILTER html %]"
@@ -67,8 +71,9 @@
         <span id="[% field.name FILTER html %]_input_area">
           <input name="[% field.name FILTER html %]" id="[% field.name FILTER html %]"
                  value="[% value FILTER html %]" size="7"
-                 [% ' aria-required="true" required' IF field.is_mandatory %]>
-
+                 [% IF field.is_mandatory %]
+                   data-required="true" [% 'aria-required="true" required' UNLESS field_hidden %]
+                 [% END %]>
         </span>
 
         [% IF value %]  
@@ -90,14 +95,15 @@
         <select id="[% field.name FILTER html %]" 
                 name="[% field.name FILTER html %]" 
                 [% IF field.type == constants.FIELD_TYPE_MULTI_SELECT %]
-                    [% SET field_size = 5 %]
-                    [% IF field.legal_values.size < 5 %]
-                        [% SET field_size = field.legal_values.size %]
-                    [% END %]
-                    size="[% field_size FILTER html %]" multiple="multiple"
-                    [% ' aria-required="true" required' IF field.is_mandatory %]
-                [% END %]
-                >
+                  [% SET field_size = 5 %]
+                  [% IF field.legal_values.size < 5 %]
+                    [% SET field_size = field.legal_values.size %]
+                  [% END %]
+                  size="[% field_size FILTER html %]" multiple="multiple"
+                  [% IF field.is_mandatory %]
+                    data-required="true" [% 'aria-required="true" required' UNLESS field_hidden %]
+                  [% END %]
+                [% END %]>
           [% IF allow_dont_change %]
             <option value="[% dontchange FILTER html %]"
                    [% ' selected="selected"' IF value == dontchange %]>
diff --git a/template/en/default/global/textarea.html.tmpl b/template/en/default/global/textarea.html.tmpl
index f3e23dd3f..313329579 100644
--- a/template/en/default/global/textarea.html.tmpl
+++ b/template/en/default/global/textarea.html.tmpl
@@ -27,6 +27,8 @@
   # defaultcontent: (optional) Default content for the textarea.
   # mandatory:      (optional) Boolean specifying whether or not the textarea
   #                 is mandatory.
+  # field_hidden:   (optional) True if the field is hidden. Only useful if
+  #                 the field is mandatory.
   #%]
 
 <textarea [% IF name %]name="[% name FILTER html %]"[% END %]
@@ -46,7 +48,7 @@
             onFocus="this.rows=[% maxrows FILTER html %]"
           [% END %]
           [% IF mandatory %]
-            aria-required="true" required
+            data-required="true" [% 'aria-required="true" required' UNLESS field_hidden %]
           [% END %]
           [% IF onchange %]
             onchange="[% onchange FILTER html %]"
-- 
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