From e1b9392dadcb762c0d9fe6b4e7c851e2349cc627 Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Fri, 25 Mar 2022 16:50:36 -0300
Subject: [PATCH 01/11] feat: render second tz select widget on agenda RH panel

  * add "minimal" option to render tz select buttons only
  * move tz-display "onchange" events into timezone.js
  * update timezone.js to handle radio inputs in addition to select
  * render second timezone select widget on the agenda's floating RH panel
---
 ietf/static/js/timezone.js             | 23 +++++++----
 ietf/templates/meeting/agenda.html     | 15 +++++--
 ietf/templates/meeting/tz-display.html | 55 +++++++++++++++-----------
 3 files changed, 58 insertions(+), 35 deletions(-)

diff --git a/ietf/static/js/timezone.js b/ietf/static/js/timezone.js
index 21f6cad774..97b3228ae8 100644
--- a/ietf/static/js/timezone.js
+++ b/ietf/static/js/timezone.js
@@ -1,5 +1,5 @@
-        // Copyright The IETF Trust 2021, All Rights Reserved
-
+// Copyright The IETF Trust 2021, All Rights Reserved
+/* global moment */
 /*
  Timezone selection handling. Relies on the moment.js library.
 
@@ -13,8 +13,9 @@ window.ietf_timezone; // public interface
 (function () {
     'use strict';
     // Callback for timezone change - called after current_timezone is updated
-    var timezone_change_callback;
-    var current_timezone;
+    let timezone_change_callback;
+    let current_timezone;
+    let tz_radios;
 
     // Select timezone to use. Arg is name of a timezone or 'local' to guess local tz.
     function use_timezone(newtz) {
@@ -31,9 +32,16 @@ window.ietf_timezone; // public interface
             if (timezone_change_callback) {
                 timezone_change_callback(newtz);
             }
+            tz_radios.filter(`[value="${newtz}"]`).prop('checked', true);
+            tz_radios.filter(`[value!="${newtz}"]`).prop('checked', false);
         }
     }
 
+    function handle_change_event(evt) {
+        const newtz = evt.target.value;
+        use_timezone(newtz); // use the requested timezone
+    }
+
     /* Initialize timezone system
      *
      * This will set the timezone to the value of 'current'. Set up the tz_change callback
@@ -42,7 +50,6 @@ window.ietf_timezone; // public interface
     function timezone_init(current) {
         var tz_names = moment.tz.names();
         var select = $('select.tz-select');
-
         select.empty();
         $.each(tz_names, function (i, item) {
             select.append($('<option/>', {
@@ -51,9 +58,9 @@ window.ietf_timezone; // public interface
                 value: item
             }));
         });
-        select.on("change", function () {
-            use_timezone(this.value);
-        });
+        tz_radios = $('input.tz-select[type="radio"]');
+        tz_radios.on('change', handle_change_event);
+        select.on('change', handle_change_event);
         /* When navigating back/forward, the browser may change the select input's
          * value after the window load event. It does not fire the change event on
          * the input when it does this. The pageshow event occurs after such an update,
diff --git a/ietf/templates/meeting/agenda.html b/ietf/templates/meeting/agenda.html
index 9ba9f0e3cb..42c4bd9dfb 100644
--- a/ietf/templates/meeting/agenda.html
+++ b/ietf/templates/meeting/agenda.html
@@ -25,7 +25,15 @@
     {% endif %}
     {# the contents of #extra-nav will be moved into the RH nav panel #}
     <div id="extra-nav" class="d-none">
-        <a class="nav-link now-link" href="#">Current session</a>
+        <div class="d-flex flex-column">
+          <a class="nav-link now-link" href="#">Current session</a>
+          <div class="px-3">
+            Showing <span class="current-tz">{{ timezone }}</span> time
+          </div>
+          <div class="w-100">
+            {% include 'meeting/tz-display.html' with id_suffix="-rh" meeting_timezone=timezone minimal=True only %}
+          </div>
+        </div>
     </div>
     {# cache this part -- it takes 3-6 seconds to generate #}
     {% load cache %}
@@ -47,7 +55,7 @@ <h2>
             {{ schedule.meeting.agenda_info_note|removetags:"h1"|safe }}
         </p>
     {% endif %}
-    {% include 'meeting/tz-display.html' with id_suffix="" timezone=timezone %}
+    {% include 'meeting/tz-display.html' with meeting_timezone=timezone only %}
     {% include "meeting/agenda_filter.html" with filter_categories=filter_categories customize_button_text="Personalize the agenda view..." always_show=personalize %}
     {% include "meeting/agenda_personalize_buttonlist.html" with meeting=schedule.meeting only %}
     <div class="input-group mb-3">
@@ -311,8 +319,7 @@ <h2 class="mt-3">
 {% endcache %}
 {% endblock %}
 {% block js %}
-    <script src="{% static 'ietf/js/agenda_filter.js' %}">
-    </script>
+    <script src="{% static 'ietf/js/agenda_filter.js' %}"></script>
     <script>
         // Update the agenda display with specified filters
         function update_agenda_display(filter_params) {
diff --git a/ietf/templates/meeting/tz-display.html b/ietf/templates/meeting/tz-display.html
index d246b7594f..d86db201c3 100644
--- a/ietf/templates/meeting/tz-display.html
+++ b/ietf/templates/meeting/tz-display.html
@@ -1,35 +1,44 @@
+{% comment %}
+Include this to display a timezone select widget. Must also include timezone.js as a script.
+  {% import "meeting/tz-display.html" with meeting_timezone="America/Halifax" id_suffix="" minimal=False only %}
+
+Must provide the meeting_timezone option, which is the timezone to be used when the "Meeting" radio is
+selected. If id_suffix is given, it is appended to the element IDs and radio input names to differentiate
+multiple instances of the widget. If minimal is True, only the Meeting/Local/UTC radios are shown and no
+arbitrary timezone select input is included in the widget.
+
+As long as id_suffix is different, should allow for as many copies of the widget on a page as you'd like.
+{% endcomment %}
 {% load origin %}
 {% origin %}
-<div class="tz-display input-group my-3">
-    <label class="input-group-text border-primary bg-white fw-bold">Time zone:</label>
+<div class="tz-display {% if minimal %}btn-group{% else %}input-group{% endif %} my-3">
+    {% if not minimal %}<label class="input-group-text border-primary bg-white fw-bold">Time zone:</label>{% endif %}
     <input type="radio"
-           {% if timezone == "meeting" %}checked{% endif %}
-           name="tzradio"
-           class="btn-check"
+           name="tzradio{{ id_suffix }}"
+           class="btn-check tz-select"
            id="meeting-timezone{{ id_suffix }}"
-           onclick="ietf_timezone.use('{{ timezone }}')">
+           value="{{ meeting_timezone }}">
     <label class="btn btn-outline-primary" for="meeting-timezone{{ id_suffix }}">Meeting</label>
     <input type="radio"
-           {% if timezone == "local" %}checked{% endif %}
-           name="tzradio"
-           class="btn-check"
+           name="tzradio{{ id_suffix }}"
+           class="btn-check tz-select"
            id="local-timezone{{ id_suffix }}"
-           onclick="ietf_timezone.use('local')">
+           value="local">
     <label class="btn btn-outline-primary" for="local-timezone{{ id_suffix }}">Local</label>
     <input type="radio"
-           {% if timezone == "UTC" %}checked{% endif %}
-           name="tzradio"
-           class="btn-check"
+           name="tzradio{{ id_suffix }}"
+           class="btn-check tz-select"
            id="utc-timezone{{ id_suffix }}"
-           onclick="ietf_timezone.use('UTC')">
+           value="UTC">
     <label class="btn btn-outline-primary" for="utc-timezone{{ id_suffix }}">UTC</label>
-    <select id="timezone-select{{ id_suffix }}"
-            class="tz-select select2-field form-select border-primary"
-            data-max-entries="1" data-minimum-input-length="0"
-            onchange="$('.tz-display input[name=tzradio]').prop('checked', false);">
-        {# Avoid blank while loading. JavaScript replaces the option list after init. #}
-        <option selected>
-            {{ timezone }}
-        </option>
-    </select>
+    {% if not minimal %}
+        <select id="timezone-select{{ id_suffix }}"
+                class="tz-select select2-field form-select border-primary"
+                data-max-entries="1" data-minimum-input-length="0">
+            {# Avoid blank while loading. JavaScript replaces the option list after init. #}
+            <option selected>
+                {{ timezone }}
+            </option>
+        </select>
+    {% endif %}
 </div>
\ No newline at end of file

From 7a601e1ed828ad3f81a13335d0a14eb0a0be6bef Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Fri, 25 Mar 2022 17:03:20 -0300
Subject: [PATCH 02/11] refactor: convert "local" to local timezone on init

Previously, kept the magic word "local" to guess the local timezone,
but this complicates keeping multiple sets of radios in sync. Instead,
replace "local" with guessed timezone name at init time.
---
 ietf/static/js/timezone.js | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/ietf/static/js/timezone.js b/ietf/static/js/timezone.js
index 97b3228ae8..35acc569ae 100644
--- a/ietf/static/js/timezone.js
+++ b/ietf/static/js/timezone.js
@@ -20,10 +20,6 @@ window.ietf_timezone; // public interface
     // Select timezone to use. Arg is name of a timezone or 'local' to guess local tz.
     function use_timezone(newtz) {
         // Guess local timezone if necessary
-        if (newtz.toLowerCase() === 'local') {
-            newtz = moment.tz.guess();
-        }
-
         if (current_timezone !== newtz) {
             current_timezone = newtz;
             // Update values of tz-select inputs but do not trigger change event
@@ -59,6 +55,7 @@ window.ietf_timezone; // public interface
             }));
         });
         tz_radios = $('input.tz-select[type="radio"]');
+        tz_radios.filter('[value="local"]').prop('value', moment.tz.guess());
         tz_radios.on('change', handle_change_event);
         select.on('change', handle_change_event);
         /* When navigating back/forward, the browser may change the select input's

From e418a1da8d86c0f757b354325411b3cad87a68d4 Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Fri, 25 Mar 2022 17:19:29 -0300
Subject: [PATCH 03/11] fix: use renamed variable in tz-display template

---
 ietf/templates/meeting/tz-display.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ietf/templates/meeting/tz-display.html b/ietf/templates/meeting/tz-display.html
index d86db201c3..d0756a9433 100644
--- a/ietf/templates/meeting/tz-display.html
+++ b/ietf/templates/meeting/tz-display.html
@@ -37,7 +37,7 @@
                 data-max-entries="1" data-minimum-input-length="0">
             {# Avoid blank while loading. JavaScript replaces the option list after init. #}
             <option selected>
-                {{ timezone }}
+                {{ meeting_timezone }}
             </option>
         </select>
     {% endif %}

From a50156182ccc239bc14a5c4493add3c1057b6eb7 Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Fri, 25 Mar 2022 17:28:29 -0300
Subject: [PATCH 04/11] fix: allow omission of id_suffix param to
 tz-display.html

---
 ietf/templates/meeting/tz-display.html | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/ietf/templates/meeting/tz-display.html b/ietf/templates/meeting/tz-display.html
index d0756a9433..cfe61e50ad 100644
--- a/ietf/templates/meeting/tz-display.html
+++ b/ietf/templates/meeting/tz-display.html
@@ -11,28 +11,29 @@
 {% endcomment %}
 {% load origin %}
 {% origin %}
+{% firstof id_suffix "" as suffix %}
 <div class="tz-display {% if minimal %}btn-group{% else %}input-group{% endif %} my-3">
     {% if not minimal %}<label class="input-group-text border-primary bg-white fw-bold">Time zone:</label>{% endif %}
     <input type="radio"
-           name="tzradio{{ id_suffix }}"
+           name="tzradio{{ suffix }}"
            class="btn-check tz-select"
-           id="meeting-timezone{{ id_suffix }}"
+           id="meeting-timezone{{ suffix }}"
            value="{{ meeting_timezone }}">
-    <label class="btn btn-outline-primary" for="meeting-timezone{{ id_suffix }}">Meeting</label>
+    <label class="btn btn-outline-primary" for="meeting-timezone{{ suffix }}">Meeting</label>
     <input type="radio"
-           name="tzradio{{ id_suffix }}"
+           name="tzradio{{ suffix }}"
            class="btn-check tz-select"
-           id="local-timezone{{ id_suffix }}"
+           id="local-timezone{{ suffix }}"
            value="local">
-    <label class="btn btn-outline-primary" for="local-timezone{{ id_suffix }}">Local</label>
+    <label class="btn btn-outline-primary" for="local-timezone{{ suffix }}">Local</label>
     <input type="radio"
-           name="tzradio{{ id_suffix }}"
+           name="tzradio{{ suffix }}"
            class="btn-check tz-select"
-           id="utc-timezone{{ id_suffix }}"
+           id="utc-timezone{{ suffix }}"
            value="UTC">
-    <label class="btn btn-outline-primary" for="utc-timezone{{ id_suffix }}">UTC</label>
+    <label class="btn btn-outline-primary" for="utc-timezone{{ suffix }}">UTC</label>
     {% if not minimal %}
-        <select id="timezone-select{{ id_suffix }}"
+        <select id="timezone-select{{ suffix }}"
                 class="tz-select select2-field form-select border-primary"
                 data-max-entries="1" data-minimum-input-length="0">
             {# Avoid blank while loading. JavaScript replaces the option list after init. #}
@@ -41,4 +42,4 @@
             </option>
         </select>
     {% endif %}
-</div>
\ No newline at end of file
+</div>

From 18019b1a62fa10a7dd970c05b9261b20fcffec33 Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Fri, 25 Mar 2022 17:38:21 -0300
Subject: [PATCH 05/11] fix: clean up positioning of secondary timezone
 selector

---
 ietf/templates/meeting/agenda.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ietf/templates/meeting/agenda.html b/ietf/templates/meeting/agenda.html
index 42c4bd9dfb..d2d5c7b418 100644
--- a/ietf/templates/meeting/agenda.html
+++ b/ietf/templates/meeting/agenda.html
@@ -30,7 +30,7 @@
           <div class="px-3">
             Showing <span class="current-tz">{{ timezone }}</span> time
           </div>
-          <div class="w-100">
+          <div class="px-3 w-100">
             {% include 'meeting/tz-display.html' with id_suffix="-rh" meeting_timezone=timezone minimal=True only %}
           </div>
         </div>

From 3a220a76c48280794de141f82436f0834db02254 Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Fri, 25 Mar 2022 17:49:29 -0300
Subject: [PATCH 06/11] feat: hide "Current session" link when meeting is over

It will show until the end of the day, styled to indicate that it is not
functional.
---
 ietf/templates/meeting/agenda.html | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ietf/templates/meeting/agenda.html b/ietf/templates/meeting/agenda.html
index d2d5c7b418..73ca54f371 100644
--- a/ietf/templates/meeting/agenda.html
+++ b/ietf/templates/meeting/agenda.html
@@ -26,7 +26,9 @@
     {# the contents of #extra-nav will be moved into the RH nav panel #}
     <div id="extra-nav" class="d-none">
         <div class="d-flex flex-column">
-          <a class="nav-link now-link" href="#">Current session</a>
+          {% if now.date <= schedule.meeting.end_date %}
+              <a class="nav-link now-link" href="#">Current session</a>
+          {% endif %}
           <div class="px-3">
             Showing <span class="current-tz">{{ timezone }}</span> time
           </div>

From 0b94e3204035c65fa7bd1677f245de8fa391bb17 Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Mon, 28 Mar 2022 12:54:53 -0300
Subject: [PATCH 07/11] fix: remove "Meeting" option for upcoming meeting
 timezone

---
 ietf/templates/meeting/tz-display.html | 14 ++++++++------
 ietf/templates/meeting/upcoming.html   |  4 ++--
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/ietf/templates/meeting/tz-display.html b/ietf/templates/meeting/tz-display.html
index cfe61e50ad..6f41af50b8 100644
--- a/ietf/templates/meeting/tz-display.html
+++ b/ietf/templates/meeting/tz-display.html
@@ -14,12 +14,14 @@
 {% firstof id_suffix "" as suffix %}
 <div class="tz-display {% if minimal %}btn-group{% else %}input-group{% endif %} my-3">
     {% if not minimal %}<label class="input-group-text border-primary bg-white fw-bold">Time zone:</label>{% endif %}
-    <input type="radio"
-           name="tzradio{{ suffix }}"
-           class="btn-check tz-select"
-           id="meeting-timezone{{ suffix }}"
-           value="{{ meeting_timezone }}">
-    <label class="btn btn-outline-primary" for="meeting-timezone{{ suffix }}">Meeting</label>
+    {% if meeting_timezone is not None %}
+        <input type="radio"
+               name="tzradio{{ suffix }}"
+               class="btn-check tz-select"
+               id="meeting-timezone{{ suffix }}"
+               value="{{ meeting_timezone }}">
+        <label class="btn btn-outline-primary" for="meeting-timezone{{ suffix }}">Meeting</label>
+    {% endif %}
     <input type="radio"
            name="tzradio{{ suffix }}"
            class="btn-check tz-select"
diff --git a/ietf/templates/meeting/upcoming.html b/ietf/templates/meeting/upcoming.html
index c7d5163644..725c254439 100644
--- a/ietf/templates/meeting/upcoming.html
+++ b/ietf/templates/meeting/upcoming.html
@@ -29,7 +29,7 @@ <h1>Upcoming Meetings</h1>
             {% endfor %}
         </div>
     {% endif %}
-    {% include 'meeting/tz-display.html' with id_suffix="" timezone="local" %}
+    {% include 'meeting/tz-display.html' with meeting_timezone=None only %}
     {% include 'meeting/agenda_filter.html' with filter_categories=filter_categories customize_button_text="Customize the meeting list..." only %}
     {% cache 600 upcoming-meetings entries.count %}
     {% if entries %}
@@ -104,7 +104,7 @@ <h1>Upcoming Meetings</h1>
         <h3 class="my-3">No upcoming meetings</h3>
     {% endif %}
 {% endcache %}
-{% include 'meeting/tz-display.html' with id_suffix="-bottom" timezone="local" %}
+{% include 'meeting/tz-display.html' with id_suffix="-bottom" meeting_timezone=None only %}
 <div id="calendar">
 </div>
 {% endblock %}

From 678d1c6acecf49732d82fe785d980dec6d355f22 Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Mon, 28 Mar 2022 15:11:43 -0300
Subject: [PATCH 08/11] fix: accept 'local' as the initially selected time zone

---
 ietf/static/js/timezone.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ietf/static/js/timezone.js b/ietf/static/js/timezone.js
index 35acc569ae..f4039ed110 100644
--- a/ietf/static/js/timezone.js
+++ b/ietf/static/js/timezone.js
@@ -45,8 +45,11 @@ window.ietf_timezone; // public interface
      */
     function timezone_init(current) {
         var tz_names = moment.tz.names();
-        var select = $('select.tz-select');
-        select.empty();
+        if (current == 'local') {
+            current = moment.tz.guess();
+        }
+        tz_selects = $('select.tz-select');
+        tz_selects.empty();
         $.each(tz_names, function (i, item) {
             select.append($('<option/>', {
                 selected: current === item,

From 079a5238b5ea9d94103a2f4bd1c6fae82ac8829a Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Mon, 28 Mar 2022 15:12:30 -0300
Subject: [PATCH 09/11] feat: keep select2 widget in sync with time zone set on
 page

---
 ietf/static/js/timezone.js | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/ietf/static/js/timezone.js b/ietf/static/js/timezone.js
index f4039ed110..9f905eef61 100644
--- a/ietf/static/js/timezone.js
+++ b/ietf/static/js/timezone.js
@@ -16,6 +16,7 @@ window.ietf_timezone; // public interface
     let timezone_change_callback;
     let current_timezone;
     let tz_radios;
+    let tz_selects;
 
     // Select timezone to use. Arg is name of a timezone or 'local' to guess local tz.
     function use_timezone(newtz) {
@@ -30,6 +31,8 @@ window.ietf_timezone; // public interface
             }
             tz_radios.filter(`[value="${newtz}"]`).prop('checked', true);
             tz_radios.filter(`[value!="${newtz}"]`).prop('checked', false);
+            tz_selects.val(newtz);
+            tz_selects.trigger('change.select2'); // notify only select2 of change to avoid change event storm
         }
     }
 
@@ -51,7 +54,7 @@ window.ietf_timezone; // public interface
         tz_selects = $('select.tz-select');
         tz_selects.empty();
         $.each(tz_names, function (i, item) {
-            select.append($('<option/>', {
+            tz_selects.append($('<option/>', {
                 selected: current === item,
                 html: item,
                 value: item
@@ -60,13 +63,13 @@ window.ietf_timezone; // public interface
         tz_radios = $('input.tz-select[type="radio"]');
         tz_radios.filter('[value="local"]').prop('value', moment.tz.guess());
         tz_radios.on('change', handle_change_event);
-        select.on('change', handle_change_event);
+        tz_selects.on('change', handle_change_event);
         /* When navigating back/forward, the browser may change the select input's
          * value after the window load event. It does not fire the change event on
          * the input when it does this. The pageshow event occurs after such an update,
          * so trigger the change event ourselves to be sure the UI stays consistent
          * with the timezone select input. */
-        window.addEventListener('pageshow', function () { select.trigger("change"); });
+        window.addEventListener('pageshow', function () { tz_selects.trigger("change"); });
         use_timezone(current);
     }
 

From 3e452606d59083cf53c3654b49291de1c8d08c00 Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Mon, 28 Mar 2022 15:12:49 -0300
Subject: [PATCH 10/11] refactor: clean up some javascript/jquery syntax

---
 ietf/static/js/timezone.js           | 4 +---
 ietf/templates/meeting/upcoming.html | 3 +--
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/ietf/static/js/timezone.js b/ietf/static/js/timezone.js
index 9f905eef61..a8bf64ce97 100644
--- a/ietf/static/js/timezone.js
+++ b/ietf/static/js/timezone.js
@@ -8,8 +8,6 @@
  names. Time zone can be changed via the select input or by calling the use() method with
  the name of a time zone (or 'local' to guess the user's local timezone).
  */
-window.ietf_timezone; // public interface
-
 (function () {
     'use strict';
     // Callback for timezone change - called after current_timezone is updated
@@ -74,7 +72,7 @@ window.ietf_timezone; // public interface
     }
 
     // Expose public interface
-    ietf_timezone = {
+    window.ietf_timezone = {
         get_current_tz: function () { return current_timezone; },
         initialize: timezone_init,
         set_tz_change_callback: function (cb) { timezone_change_callback = cb; },
diff --git a/ietf/templates/meeting/upcoming.html b/ietf/templates/meeting/upcoming.html
index 725c254439..8cf15a2546 100644
--- a/ietf/templates/meeting/upcoming.html
+++ b/ietf/templates/meeting/upcoming.html
@@ -142,8 +142,7 @@ <h3 class="my-3">No upcoming meetings</h3>
                   {% endif %}
                 {% endfor %}];
 
-        $(document)
-            .ready(function () {
+        $(function () {
                 // Init with best guess at local timezone.
                 ietf_timezone.set_tz_change_callback(timezone_changed);
                 ietf_timezone.initialize('local');

From 9e185046c5e47c8547d6a296e4fbc229015c2554 Mon Sep 17 00:00:00 2001
From: Jennifer Richards <jennifer@painless-security.com>
Date: Thu, 7 Apr 2022 11:55:32 -0300
Subject: [PATCH 11/11] style: remove outdated comment; compare with '==='

---
 ietf/static/js/timezone.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/ietf/static/js/timezone.js b/ietf/static/js/timezone.js
index a8bf64ce97..1d7207fe00 100644
--- a/ietf/static/js/timezone.js
+++ b/ietf/static/js/timezone.js
@@ -18,7 +18,6 @@
 
     // Select timezone to use. Arg is name of a timezone or 'local' to guess local tz.
     function use_timezone(newtz) {
-        // Guess local timezone if necessary
         if (current_timezone !== newtz) {
             current_timezone = newtz;
             // Update values of tz-select inputs but do not trigger change event
@@ -46,7 +45,7 @@
      */
     function timezone_init(current) {
         var tz_names = moment.tz.names();
-        if (current == 'local') {
+        if (current === 'local') {
             current = moment.tz.guess();
         }
         tz_selects = $('select.tz-select');