recent_topics: Split into three modules.

We split recent_topics module into recent_topics_(ui + data + util).

This allows us to reduce cyclical dependencies which were
created due to large list of imports in recent topics. Also, this
refactor on its own makes sense.

frontend_tests/node_tests/compose_actions.js

@@ -30,9 +30,8 @@ mock_esm("../../static/js/notifications", {
 mock_esm("../../static/js/reload_state", {
     is_in_progress: () => false,
 });
-mock_esm("../../static/js/recent_topics", {
+mock_esm("../../static/js/recent_topics_util", {
     is_visible: noop,
-    set_compose_defaults: noop,
 });
 mock_esm("../../static/js/drafts", {
     update_draft: noop,

frontend_tests/node_tests/compose_closed_ui.js

@@ -7,6 +7,10 @@ const {mock_cjs, mock_esm, set_global, zrequire} = require("../zjsunit/namespace
 const {run_test} = require("../zjsunit/test");
 const $ = require("../zjsunit/zjquery");
 
+mock_esm("../../static/js/recent_topics_util", {
+    is_visible: () => false,
+});
+
 // Mocking and stubbing things
 mock_cjs("jquery", $);
 set_global("document", "document-stub");

frontend_tests/node_tests/example7.js

@@ -60,7 +60,7 @@ message_lists.current = {};
 message_lists.home = {};
 
 const message_store = zrequire("message_store");
-const recent_topics = zrequire("recent_topics");
+const recent_topics_util = zrequire("recent_topics_util");
 const stream_data = zrequire("stream_data");
 const unread = zrequire("unread");
 const unread_ops = zrequire("unread_ops");
@@ -90,7 +90,7 @@ run_test("unread_ops", (override) => {
     ];
 
     // We don't want recent topics to process message for this test.
-    override(recent_topics, "is_visible", () => false);
+    override(recent_topics_util, "is_visible", () => false);
     // Show message_viewport as not visible so that messages will be stored as unread.
     override(message_viewport, "is_visible_and_focused", () => false);
 

frontend_tests/node_tests/hashchange.js

@@ -43,7 +43,8 @@ const hash_util = zrequire("hash_util");
 const hashchange = zrequire("hashchange");
 const stream_data = zrequire("stream_data");
 
-const recent_topics = zrequire("recent_topics");
+const recent_topics_util = zrequire("recent_topics_util");
+const recent_topics_ui = zrequire("recent_topics_ui");
 
 run_test("operators_round_trip", () => {
     let operators;
@@ -170,8 +171,8 @@ run_test("hash_interactions", (override) => {
     window_stub = $.create("window-stub");
     page_params.default_view = "recent_topics";
 
-    override(recent_topics, "show", () => {});
-    override(recent_topics, "is_visible", () => false);
+    override(recent_topics_ui, "show", () => {});
+    override(recent_topics_util, "is_visible", () => false);
     const helper = test_helper({override, change_tab: true});
 
     window.location.hash = "#all_messages";
@@ -285,6 +286,8 @@ run_test("hash_interactions", (override) => {
 });
 
 run_test("save_narrow", (override) => {
+    override(recent_topics_util, "is_visible", () => false);
+
     const helper = test_helper({override});
 
     let operators = [{operator: "is", operand: "private"}];

frontend_tests/node_tests/hotkey.js

@@ -81,7 +81,7 @@ mock_esm("../../static/js/hotspots", {
     is_open: () => false,
 });
 
-mock_esm("../../static/js/recent_topics", {
+mock_esm("../../static/js/recent_topics_util", {
     is_visible: () => false,
     is_in_focus: () => false,
 });

frontend_tests/node_tests/message_fetch.js

@@ -21,7 +21,7 @@ mock_esm("../../static/js/message_list_view", {
     MessageListView,
 });
 
-mock_esm("../../static/js/recent_topics", {
+mock_esm("../../static/js/recent_topics_ui", {
     process_messages: noop,
 });
 mock_esm("../../static/js/ui_report", {

frontend_tests/node_tests/narrow_activate.js

@@ -38,8 +38,7 @@ const top_left_corner = mock_esm("../../static/js/top_left_corner");
 const typing_events = mock_esm("../../static/js/typing_events");
 const ui_util = mock_esm("../../static/js/ui_util");
 const unread_ops = mock_esm("../../static/js/unread_ops");
-mock_esm("../../static/js/recent_topics", {
-    hide: () => {},
+mock_esm("../../static/js/recent_topics_util", {
     is_visible: () => {},
 });
 

frontend_tests/node_tests/recent_topics.js

@@ -103,9 +103,6 @@ mock_esm("../../static/js/muting", {
 mock_esm("../../static/js/narrow", {
     set_narrow_title: noop,
 });
-mock_esm("../../static/js/popovers", {
-    any_active: () => false,
-});
 mock_esm("../../static/js/recent_senders", {
     get_topic_recent_senders: () => [1, 2],
 });
@@ -172,7 +169,8 @@ set_global("localStorage", {
 
 const {all_messages_data} = zrequire("all_messages_data");
 const people = zrequire("people");
-const rt = zrequire("recent_topics");
+const rt = zrequire("recent_topics_ui");
+const rt_data = zrequire("recent_topics_data");
 
 people.is_my_user_id = (id) => id === 1;
 people.sender_info_for_recent_topics_row = (ids) => ids;
@@ -654,7 +652,7 @@ test("basic assertions", (override) => {
     rt.set_default_focus();
     rt.set_filter("all");
     rt.process_messages(messages);
-    let all_topics = rt.get();
+    let all_topics = rt_data.get();
 
     // update a message
     generate_topic_data([[1, "topic-7", 1, false, true]]);
@@ -703,7 +701,7 @@ test("basic assertions", (override) => {
         "4:topic-10,1:topic-7,1:topic-6,1:topic-5,1:topic-4,1:topic-3,1:topic-2,1:topic-1",
     );
 
-    rt.process_message({
+    rt_data.process_message({
         type: "private",
     });
 
@@ -724,7 +722,7 @@ test("basic assertions", (override) => {
     verify_topic_data(all_topics, stream1, topic4, messages[4].id, false);
 
     // topic3 now participated
-    rt.process_message({
+    rt_data.process_message({
         stream_id: stream1,
         id: (id += 1),
         topic: topic3,
@@ -732,7 +730,7 @@ test("basic assertions", (override) => {
         type: "stream",
     });
 
-    all_topics = rt.get();
+    all_topics = rt_data.get();
     assert.equal(
         Array.from(all_topics.keys()).toString(),
         "1:topic-3,4:topic-10,1:topic-7,1:topic-6,1:topic-5,1:topic-4,1:topic-2,1:topic-1",
@@ -741,7 +739,7 @@ test("basic assertions", (override) => {
 
     // Send new message to topic7 (muted)
     // The topic will be hidden when displayed
-    rt.process_message({
+    rt_data.process_message({
         stream_id: stream1,
         id: (id += 1),
         topic: topic7,
@@ -749,7 +747,7 @@ test("basic assertions", (override) => {
         type: "stream",
     });
 
-    all_topics = rt.get();
+    all_topics = rt_data.get();
     assert.equal(
         Array.from(all_topics.keys()).toString(),
         "1:topic-7,1:topic-3,4:topic-10,1:topic-6,1:topic-5,1:topic-4,1:topic-2,1:topic-1",
@@ -772,7 +770,7 @@ test("test_reify_local_echo_message", (override) => {
     rt.set_filter("all");
     rt.process_messages(messages);
 
-    rt.process_message({
+    rt_data.process_message({
         stream_id: stream1,
         id: 1000.01,
         topic: topic7,
@@ -781,14 +779,14 @@ test("test_reify_local_echo_message", (override) => {
     });
 
     assert.equal(
-        rt.reify_message_id_if_available({
+        rt_data.reify_message_id_if_available({
             old_id: 1000.01,
             new_id: 1001,
         }),
         true,
     );
 
-    rt.process_message({
+    rt_data.process_message({
         stream_id: stream1,
         id: 1001.01,
         topic: topic7,
@@ -797,7 +795,7 @@ test("test_reify_local_echo_message", (override) => {
     });
 
     // A new message arrived in the same topic before we could reify the message_id
-    rt.process_message({
+    rt_data.process_message({
         stream_id: stream1,
         id: 1003,
         topic: topic7,
@@ -806,7 +804,7 @@ test("test_reify_local_echo_message", (override) => {
     });
 
     assert.equal(
-        rt.reify_message_id_if_available({
+        rt_data.reify_message_id_if_available({
             old_id: 1000.01,
             new_id: 1001,
         }),
@@ -824,14 +822,14 @@ test("test_delete_messages", (override) => {
     let reduced_msgs = messages.slice(1);
     override(all_messages_data, "all_messages", () => reduced_msgs);
 
-    let all_topics = rt.get();
+    let all_topics = rt_data.get();
     assert.equal(
         Array.from(all_topics.keys()).toString(),
         "4:topic-10,1:topic-7,1:topic-6,1:topic-5,1:topic-4,1:topic-3,1:topic-2,1:topic-1",
     );
     rt.update_topics_of_deleted_message_ids([messages[0].id]);
 
-    all_topics = rt.get();
+    all_topics = rt_data.get();
     assert.equal(
         Array.from(all_topics.keys()).toString(),
         "4:topic-10,1:topic-7,1:topic-6,1:topic-5,1:topic-4,1:topic-3,1:topic-2",
@@ -842,7 +840,7 @@ test("test_delete_messages", (override) => {
 
     rt.update_topics_of_deleted_message_ids([messages[1].id, messages[2].id]);
 
-    all_topics = rt.get();
+    all_topics = rt_data.get();
     assert.equal(
         Array.from(all_topics.keys()).toString(),
         "4:topic-10,1:topic-7,1:topic-6,1:topic-5,1:topic-4,1:topic-3",
@@ -861,7 +859,7 @@ test("test_topic_edit", (override) => {
     rt.set_filter("all");
     rt.process_messages(messages);
 
-    let all_topics = rt.get();
+    let all_topics = rt_data.get();
     assert.equal(
         Array.from(all_topics.keys()).toString(),
         "4:topic-10,1:topic-7,1:topic-6,1:topic-5,1:topic-4,1:topic-3,1:topic-2,1:topic-1",
@@ -875,7 +873,7 @@ test("test_topic_edit", (override) => {
     messages[7].topic = topic8;
     messages[8].topic = topic8;
     rt.process_topic_edit(stream1, topic6, topic8);
-    all_topics = rt.get();
+    all_topics = rt_data.get();
 
     verify_topic_data(all_topics, stream1, topic8, messages[8].id, true);
     assert.equal(all_topics.get(get_topic_key(stream1, topic6)), undefined);
@@ -886,7 +884,7 @@ test("test_topic_edit", (override) => {
 
     messages[0].stream_id = stream2;
     rt.process_topic_edit(stream1, topic1, topic1, stream2);
-    all_topics = rt.get();
+    all_topics = rt_data.get();
 
     assert.equal(all_topics.get(get_topic_key(stream1, topic1)), undefined);
     verify_topic_data(all_topics, stream2, topic1, messages[0].id, true);
@@ -898,7 +896,7 @@ test("test_topic_edit", (override) => {
     messages[0].stream_id = stream3;
     messages[0].topic = topic9;
     rt.process_topic_edit(stream2, topic1, topic9, stream3);
-    all_topics = rt.get();
+    all_topics = rt_data.get();
 
     assert.equal(all_topics.get(get_topic_key(stream2, topic1)), undefined);
     verify_topic_data(all_topics, stream3, topic9, messages[0].id, true);
@@ -907,7 +905,7 @@ test("test_topic_edit", (override) => {
     messages[0].stream_id = stream5;
     messages[0].topic = topic8;
     rt.process_topic_edit(stream3, topic9, topic8, stream5);
-    all_topics = rt.get();
+    all_topics = rt_data.get();
     assert.equal(rt.filters_should_hide_topic(all_topics.get("5:topic-8")), true);
 });
 

frontend_tests/node_tests/stream_events.js

@@ -30,7 +30,7 @@ mock_esm("../../static/js/all_messages_data", {
 const message_lists = mock_esm("../../static/js/message_lists", {
     current: {},
 });
-mock_esm("../../static/js/recent_topics", {
+mock_esm("../../static/js/recent_topics_ui", {
     complete_rerender: () => {},
 });
 mock_esm("../../static/js/settings_notifications", {

static/js/click_handlers.js

@@ -32,7 +32,7 @@ import * as overlays from "./overlays";
 import {page_params} from "./page_params";
 import * as popovers from "./popovers";
 import * as reactions from "./reactions";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
 import * as rows from "./rows";
 import * as server_events from "./server_events";
 import * as settings_panel_menu from "./settings_panel_menu";
@@ -407,7 +407,7 @@ export function initialize() {
     $("body").on("click", "#recent_topics_table .on_hover_topic_unmute", (e) => {
         e.stopPropagation();
         const $elt = $(e.target);
-        recent_topics.focus_clicked_element($elt, recent_topics.COLUMNS.mute);
+        recent_topics_ui.focus_clicked_element($elt, recent_topics_ui.COLUMNS.mute);
         mute_or_unmute_topic($elt, false);
     });
 
@@ -416,18 +416,18 @@ export function initialize() {
     $("body").on("click", "#recent_topics_table .on_hover_topic_mute", (e) => {
         e.stopPropagation();
         const $elt = $(e.target);
-        recent_topics.focus_clicked_element($elt, recent_topics.COLUMNS.mute);
+        recent_topics_ui.focus_clicked_element($elt, recent_topics_ui.COLUMNS.mute);
         mute_or_unmute_topic($elt, true);
     });
 
     $("body").on("click", "#recent_topics_search", (e) => {
         e.stopPropagation();
-        recent_topics.change_focused_element($(e.target), "click");
+        recent_topics_ui.change_focused_element($(e.target), "click");
     });
 
     $("body").on("click", "#recent_topics_table .on_hover_topic_read", (e) => {
         e.stopPropagation();
-        recent_topics.focus_clicked_element($(e.target), recent_topics.COLUMNS.read);
+        recent_topics_ui.focus_clicked_element($(e.target), recent_topics_ui.COLUMNS.read);
         const stream_id = Number.parseInt($(e.currentTarget).attr("data-stream-id"), 10);
         const topic = $(e.currentTarget).attr("data-topic-name");
         unread_ops.mark_topic_as_read(stream_id, topic);
@@ -437,20 +437,20 @@ export function initialize() {
 
     $("body").on("click", ".btn-recent-filters", (e) => {
         e.stopPropagation();
-        recent_topics.change_focused_element($(e.target), "click");
-        recent_topics.set_filter(e.currentTarget.dataset.filter);
-        recent_topics.update_filters_view();
+        recent_topics_ui.change_focused_element($(e.target), "click");
+        recent_topics_ui.set_filter(e.currentTarget.dataset.filter);
+        recent_topics_ui.update_filters_view();
     });
 
     $("body").on("click", "td.recent_topic_stream", (e) => {
         e.stopPropagation();
-        recent_topics.focus_clicked_element($(e.target), recent_topics.COLUMNS.stream);
+        recent_topics_ui.focus_clicked_element($(e.target), recent_topics_ui.COLUMNS.stream);
         window.location.href = $(e.currentTarget).find("a").attr("href");
     });
 
     $("body").on("click", "td.recent_topic_name", (e) => {
         e.stopPropagation();
-        recent_topics.focus_clicked_element($(e.target), recent_topics.COLUMNS.topic);
+        recent_topics_ui.focus_clicked_element($(e.target), recent_topics_ui.COLUMNS.topic);
         window.location.href = $(e.currentTarget).find("a").attr("href");
     });
 
@@ -459,7 +459,7 @@ export function initialize() {
         "keyup",
         "#recent_topics_search",
         _.debounce(() => {
-            recent_topics.update_filters_view();
+            recent_topics_ui.update_filters_view();
             // Wait for user to go idle before initiating search.
         }, 300),
     );
@@ -467,7 +467,7 @@ export function initialize() {
     $("body").on("click", "#recent_topics_search_clear", (e) => {
         e.stopPropagation();
         $("#recent_topics_search").val("");
-        recent_topics.update_filters_view();
+        recent_topics_ui.update_filters_view();
     });
 
     // RECIPIENT BARS

static/js/compose_actions.js

@@ -20,7 +20,8 @@ import * as narrow_state from "./narrow_state";
 import * as notifications from "./notifications";
 import {page_params} from "./page_params";
 import * as people from "./people";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
+import * as recent_topics_util from "./recent_topics_util";
 import * as reload_state from "./reload_state";
 import * as stream_bar from "./stream_bar";
 import * as stream_data from "./stream_data";
@@ -299,8 +300,8 @@ export function respond_to_message(opts) {
 
     let message;
     let msg_type;
-    if (recent_topics.is_visible()) {
-        message = recent_topics.get_focused_row_message();
+    if (recent_topics_util.is_visible()) {
+        message = recent_topics_ui.get_focused_row_message();
         if (message === undefined) {
             // Open empty compose with nothing pre-filled since
             // user is not focused on any table row.

static/js/compose_closed_ui.js

@@ -7,7 +7,7 @@ import * as message_store from "./message_store";
 import * as narrow_state from "./narrow_state";
 import * as people from "./people";
 import * as popovers from "./popovers";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_util from "./recent_topics_util";
 
 function update_stream_button(btn_text, title) {
     $("#left_bar_compose_stream_button_big").text(btn_text);
@@ -101,7 +101,7 @@ export function update_reply_recipient_label(message) {
 export function initialize() {
     // When the message selection changes, change the label on the Reply button.
     $(document).on("message_selected.zulip", () => {
-        if (recent_topics.is_visible()) {
+        if (recent_topics_util.is_visible()) {
             // message_selected events can occur with recent topics
             // open due to "All messages" loading in the background,
             // so we return without calling changing button state.

static/js/echo.js

@@ -16,7 +16,7 @@ import {page_params} from "./page_params";
 import * as people from "./people";
 import * as pm_list from "./pm_list";
 import * as popovers from "./popovers";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_data from "./recent_topics_data";
 import * as rows from "./rows";
 import * as sent_messages from "./sent_messages";
 import * as stream_list from "./stream_list";
@@ -336,7 +336,7 @@ export function reify_message_id(local_id, server_id) {
     message_store.reify_message_id(opts);
     update_message_lists(opts);
     notifications.reify_message_id(opts);
-    recent_topics.reify_message_id_if_available(opts);
+    recent_topics_data.reify_message_id_if_available(opts);
 }
 
 export function update_message_lists({old_id, new_id}) {

static/js/hashchange.js

@@ -15,7 +15,8 @@ import * as narrow from "./narrow";
 import * as navigate from "./navigate";
 import * as overlays from "./overlays";
 import {page_params} from "./page_params";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
+import * as recent_topics_util from "./recent_topics_util";
 import * as search from "./search";
 import * as settings from "./settings";
 import * as settings_panel_menu from "./settings_panel_menu";
@@ -58,8 +59,8 @@ function set_hash(hash) {
 }
 
 function maybe_hide_recent_topics() {
-    if (recent_topics.is_visible()) {
-        recent_topics.hide();
+    if (recent_topics_util.is_visible()) {
+        recent_topics_ui.hide();
         return true;
     }
     return false;
@@ -105,7 +106,7 @@ function show_default_view() {
     // We only allow all_messages and recent_topics
     // to be rendered without a hash.
     if (page_params.default_view === "recent_topics") {
-        recent_topics.show();
+        recent_topics_ui.show();
     } else if (page_params.default_view === "all_messages") {
         show_all_message_view();
     } else {
@@ -162,7 +163,7 @@ function do_hashchange_normal(from_reload) {
             show_default_view();
             break;
         case "#recent_topics":
-            recent_topics.show();
+            recent_topics_ui.show();
             break;
         case "#all_messages":
             show_all_message_view();

static/js/hotkey.js

@@ -30,7 +30,8 @@ import * as overlays from "./overlays";
 import {page_params} from "./page_params";
 import * as popovers from "./popovers";
 import * as reactions from "./reactions";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
+import * as recent_topics_util from "./recent_topics_util";
 import * as search from "./search";
 import * as settings_data from "./settings_data";
 import * as stream_list from "./stream_list";
@@ -222,10 +223,10 @@ export function in_content_editable_widget(e) {
 // Returns true if we handled it, false if the browser should.
 export function process_escape_key(e) {
     if (
-        recent_topics.is_in_focus() &&
+        recent_topics_util.is_in_focus() &&
         // This will return false if `e.target` is not
         // any of the recent topics elements by design.
-        recent_topics.change_focused_element($(e.target), "escape")
+        recent_topics_ui.change_focused_element($(e.target), "escape")
     ) {
         // Recent topics uses escape to switch focus from RT search / filters to topics table.
         // If focus is already on the table it returns false.
@@ -549,8 +550,8 @@ export function process_hotkey(e, hotkey) {
         case "tab":
         case "shift_tab":
         case "open_recent_topics":
-            if (recent_topics.is_in_focus()) {
-                return recent_topics.change_focused_element($(e.target), event_name);
+            if (recent_topics_util.is_in_focus()) {
+                return recent_topics_ui.change_focused_element($(e.target), event_name);
             }
     }
 
@@ -816,7 +817,7 @@ export function process_hotkey(e, hotkey) {
 
     // We don't want hotkeys below this to work when recent topics is
     // open. These involve hotkeys that can only be performed on a message.
-    if (recent_topics.is_visible()) {
+    if (recent_topics_util.is_visible()) {
         return false;
     }
 

static/js/message_events.js

@@ -20,7 +20,7 @@ import * as notifications from "./notifications";
 import {page_params} from "./page_params";
 import * as pm_list from "./pm_list";
 import * as recent_senders from "./recent_senders";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
 import * as resize from "./resize";
 import * as stream_list from "./stream_list";
 import * as stream_topic_history from "./stream_topic_history";
@@ -132,7 +132,7 @@ export function insert_new_messages(messages, sent_by_this_client) {
     notifications.received_messages(messages);
     stream_list.update_streams_sidebar();
     pm_list.update_private_messages();
-    recent_topics.process_messages(messages);
+    recent_topics_ui.process_messages(messages);
 }
 
 export function update_messages(events) {
@@ -399,7 +399,7 @@ export function update_messages(events) {
                 new_stream_id: post_edit_stream_id,
                 new_topic: post_edit_topic,
             });
-            recent_topics.process_topic_edit(...args);
+            recent_topics_ui.process_topic_edit(...args);
         }
 
         // Rerender "Message edit history" if it was open to the edited message.
@@ -456,5 +456,5 @@ export function remove_messages(message_ids) {
         list.remove_and_rerender(message_ids);
     }
     recent_senders.update_topics_of_deleted_message_ids(message_ids);
-    recent_topics.update_topics_of_deleted_message_ids(message_ids);
+    recent_topics_ui.update_topics_of_deleted_message_ids(message_ids);
 }

static/js/message_fetch.js

@@ -14,7 +14,7 @@ import * as narrow_banner from "./narrow_banner";
 import {page_params} from "./page_params";
 import * as people from "./people";
 import * as pm_list from "./pm_list";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
 import * as stream_data from "./stream_data";
 import * as stream_list from "./stream_list";
 import * as ui_report from "./ui_report";
@@ -76,7 +76,7 @@ function process_result(data, opts) {
     huddle_data.process_loaded_messages(messages);
     stream_list.update_streams_sidebar();
     pm_list.update_private_messages();
-    recent_topics.process_messages(messages);
+    recent_topics_ui.process_messages(messages);
 
     stream_list.maybe_scroll_narrow_into_view();
 

static/js/message_list_view.js

@@ -25,7 +25,7 @@ import {page_params} from "./page_params";
 import * as people from "./people";
 import * as popovers from "./popovers";
 import * as reactions from "./reactions";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_util from "./recent_topics_util";
 import * as rendered_markdown from "./rendered_markdown";
 import * as rows from "./rows";
 import * as stream_data from "./stream_data";
@@ -658,7 +658,7 @@ export class MessageListView {
 
         const restore_scroll_position = () => {
             if (
-                !recent_topics.is_visible() &&
+                !recent_topics_util.is_visible() &&
                 list === message_lists.current &&
                 orig_scrolltop_offset !== undefined
             ) {

static/js/message_scroll.js

@@ -9,7 +9,7 @@ import * as message_lists from "./message_lists";
 import * as message_viewport from "./message_viewport";
 import * as narrow_banner from "./narrow_banner";
 import * as narrow_state from "./narrow_state";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_util from "./recent_topics_util";
 import * as unread_ops from "./unread_ops";
 
 let actively_scrolling = false;
@@ -100,7 +100,7 @@ export function update_top_of_narrow_notices(msg_list) {
         message_lists.current !== message_lists.home
     ) {
         const filter = narrow_state.filter();
-        if (filter === undefined && recent_topics.is_visible()) {
+        if (filter === undefined && recent_topics_util.is_visible()) {
             // user moved away from the narrow / filter to recent topics.
             return;
         }

static/js/message_view_header.js

@@ -6,7 +6,7 @@ import {$t} from "./i18n";
 import * as narrow_state from "./narrow_state";
 import {page_params} from "./page_params";
 import * as peer_data from "./peer_data";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_util from "./recent_topics_util";
 import * as rendered_markdown from "./rendered_markdown";
 import * as search from "./search";
 
@@ -20,7 +20,7 @@ function get_formatted_sub_count(sub_count) {
 
 function make_message_view_header(filter) {
     const message_view_header = {};
-    if (recent_topics.is_visible()) {
+    if (recent_topics_util.is_visible()) {
         return {
             title: $t({defaultMessage: "Recent topics"}),
             icon: "clock-o",

static/js/muting_ui.js

@@ -15,7 +15,7 @@ import * as overlays from "./overlays";
 import * as people from "./people";
 import * as pm_list from "./pm_list";
 import * as popovers from "./popovers";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
 import * as settings_muted_topics from "./settings_muted_topics";
 import * as settings_muted_users from "./settings_muted_users";
 import * as stream_data from "./stream_data";
@@ -40,7 +40,7 @@ export function rerender_for_muted_topic(old_muted_topics) {
     const maybe_affected_topics = _.unionWith(old_muted_topics, current_muted_topics, _.isEqual);
 
     for (const topic_data of maybe_affected_topics) {
-        recent_topics.update_topic_is_muted(topic_data.stream_id, topic_data.topic);
+        recent_topics_ui.update_topic_is_muted(topic_data.stream_id, topic_data.topic);
     }
 }
 
@@ -172,7 +172,7 @@ export function rerender_for_muted_user() {
 
     // If a user is (un)muted, we want to update their avatars on the recent topics
     // participants column.
-    recent_topics.complete_rerender();
+    recent_topics_ui.complete_rerender();
 }
 
 export function handle_user_updates(muted_user_ids) {

static/js/narrow.js

@@ -23,7 +23,8 @@ import * as narrow_state from "./narrow_state";
 import * as notifications from "./notifications";
 import {page_params} from "./page_params";
 import * as people from "./people";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
+import * as recent_topics_util from "./recent_topics_util";
 import * as resize from "./resize";
 import * as search from "./search";
 import * as search_pill from "./search_pill";
@@ -187,8 +188,8 @@ export function activate(raw_operators, opts) {
          or rerendering due to server-side changes.
     */
 
-    if (recent_topics.is_visible()) {
-        recent_topics.hide();
+    if (recent_topics_util.is_visible()) {
+        recent_topics_ui.hide();
     }
 
     const start_time = new Date();

static/js/recent_topics_data.js

@@ -0,0 +1,63 @@
+import * as people from "./people";
+import {get_topic_key} from "./recent_topics_util";
+
+export const topics = new Map(); // Key is stream-id:topic.
+
+export function process_message(msg) {
+    // This function returns if topic_data
+    // has changed or not.
+    if (msg.type !== "stream") {
+        // We don't process private messages yet.
+        return false;
+    }
+    // Initialize topic data
+    const key = get_topic_key(msg.stream_id, msg.topic);
+    if (!topics.has(key)) {
+        topics.set(key, {
+            last_msg_id: -1,
+            participated: false,
+        });
+    }
+    // Update topic data
+    const is_ours = people.is_my_user_id(msg.sender_id);
+    const topic_data = topics.get(key);
+    if (topic_data.last_msg_id < msg.id) {
+        // NOTE: This also stores locally echoed msg_id which
+        // has not been successfully received from the server.
+        // We store it now and reify it when response is available
+        // from server.
+        topic_data.last_msg_id = msg.id;
+    }
+    // TODO: Add backend support for participated topics.
+    // Currently participated === recently participated
+    // i.e. Only those topics are participated for which we have the user's
+    // message fetched in the topic. Ideally we would want this to be attached
+    // to topic info fetched from backend, which is currently not a thing.
+    topic_data.participated = is_ours || topic_data.participated;
+    return true;
+}
+
+function get_sorted_topics() {
+    // Sort all recent topics by last message time.
+    return new Map(
+        Array.from(topics.entries()).sort((a, b) => b[1].last_msg_id - a[1].last_msg_id),
+    );
+}
+
+export function get() {
+    return get_sorted_topics();
+}
+
+export function reify_message_id_if_available(opts) {
+    // We don't need to reify the message_id of the topic
+    // if a new message arrives in the topic from another user,
+    // since it replaces the last_msg_id of the topic which
+    // we were trying to reify.
+    for (const [, value] of topics.entries()) {
+        if (value.last_msg_id === opts.old_id) {
+            value.last_msg_id = opts.new_id;
+            return true;
+        }
+    }
+    return false;
+}

static/js/recent_topics_ui.js

@@ -5,7 +5,6 @@ import render_recent_topics_filters from "../templates/recent_topics_filters.hbs
 import render_recent_topics_body from "../templates/recent_topics_table.hbs";
 
 import * as compose_closed_ui from "./compose_closed_ui";
-import * as compose_state from "./compose_state";
 import * as hash_util from "./hash_util";
 import {$t} from "./i18n";
 import * as ListWidget from "./list_widget";
@@ -18,10 +17,10 @@ import * as narrow from "./narrow";
 import * as narrow_state from "./narrow_state";
 import * as navbar_alerts from "./navbar_alerts";
 import * as navigate from "./navigate";
-import * as overlays from "./overlays";
 import * as people from "./people";
-import * as popovers from "./popovers";
 import * as recent_senders from "./recent_senders";
+import {get, process_message, topics} from "./recent_topics_data";
+import {get_topic_key, is_in_focus, is_visible} from "./recent_topics_util";
 import * as stream_data from "./stream_data";
 import * as stream_list from "./stream_list";
 import * as sub_store from "./sub_store";
@@ -29,7 +28,6 @@ import * as timerender from "./timerender";
 import * as top_left_corner from "./top_left_corner";
 import * as unread from "./unread";
 
-const topics = new Map(); // Key is stream-id:topic.
 let topics_widget;
 // Sets the number of avatars to display.
 // Rest of the avatars, if present, are displayed as {+x}
@@ -47,7 +45,8 @@ const MAX_EXTRA_SENDERS = 10;
 // So, we use table as a grid system and
 // track the coordinates of the focus element via
 // `row_focus` and `col_focus`.
-let current_focus_elem = "table";
+export let current_focus_elem = "table";
+
 let row_focus = 0;
 // Start focus on the topic column, so Down+Enter works to visit a topic.
 let col_focus = 1;
@@ -71,18 +70,6 @@ const ls = localstorage();
 
 let filters = new Set();
 
-export function is_in_focus() {
-    // Check if user is focused on
-    // recent topics.
-    return (
-        is_visible() &&
-        !compose_state.composing() &&
-        !popovers.any_active() &&
-        !overlays.is_active() &&
-        !$(".home-page-input").is(":focus")
-    );
-}
-
 export function clear_for_tests() {
     filters.clear();
     topics.clear();
@@ -97,10 +84,6 @@ export function load_filters() {
     filters = new Set(ls.get(ls_key));
 }
 
-function is_table_focused() {
-    return current_focus_elem === "table";
-}
-
 export function set_default_focus() {
     // If at any point we are confused about the currently
     // focused element, we switch focus to search.
@@ -117,6 +100,10 @@ function get_min_load_count(already_rendered_count, load_count) {
     return load_count;
 }
 
+function is_table_focused() {
+    return current_focus_elem === "table";
+}
+
 function set_table_focus(row, col) {
     const topic_rows = $("#recent_topics_table table tbody tr");
     if (topic_rows.length === 0 || row < 0 || row >= topic_rows.length) {
@@ -208,10 +195,6 @@ function revive_current_focus() {
     return true;
 }
 
-function get_topic_key(stream_id, topic) {
-    return stream_id + ":" + topic.toLowerCase();
-}
-
 export function process_messages(messages) {
     // While this is inexpensive and handles all the cases itself,
     // the UX can be bad if user wants to scroll down the list as
@@ -232,65 +215,6 @@ export function process_messages(messages) {
     }
 }
 
-export function process_message(msg) {
-    // This function returns if topic_data
-    // has changed or not.
-    if (msg.type !== "stream") {
-        // We don't process private messages yet.
-        return false;
-    }
-    // Initialize topic data
-    const key = get_topic_key(msg.stream_id, msg.topic);
-    if (!topics.has(key)) {
-        topics.set(key, {
-            last_msg_id: -1,
-            participated: false,
-        });
-    }
-    // Update topic data
-    const is_ours = people.is_my_user_id(msg.sender_id);
-    const topic_data = topics.get(key);
-    if (topic_data.last_msg_id < msg.id) {
-        // NOTE: This also stores locally echoed msg_id which
-        // has not been successfully received from the server.
-        // We store it now and reify it when response is available
-        // from server.
-        topic_data.last_msg_id = msg.id;
-    }
-    // TODO: Add backend support for participated topics.
-    // Currently participated === recently participated
-    // i.e. Only those topics are participated for which we have the user's
-    // message fetched in the topic. Ideally we would want this to be attached
-    // to topic info fetched from backend, which is currently not a thing.
-    topic_data.participated = is_ours || topic_data.participated;
-    return true;
-}
-
-export function reify_message_id_if_available(opts) {
-    // We don't need to reify the message_id of the topic
-    // if a new message arrives in the topic from another user,
-    // since it replaces the last_msg_id of the topic which
-    // we were trying to reify.
-    for (const [, value] of topics.entries()) {
-        if (value.last_msg_id === opts.old_id) {
-            value.last_msg_id = opts.new_id;
-            return true;
-        }
-    }
-    return false;
-}
-
-function get_sorted_topics() {
-    // Sort all recent topics by last message time.
-    return new Map(
-        Array.from(topics.entries()).sort((a, b) => b[1].last_msg_id - a[1].last_msg_id),
-    );
-}
-
-export function get() {
-    return get_sorted_topics();
-}
-
 function format_topic(topic_data) {
     const last_msg = message_store.get(topic_data.last_msg_id);
     const stream = last_msg.stream;
@@ -650,10 +574,6 @@ export function complete_rerender() {
     });
 }
 
-export function is_visible() {
-    return $("#recent_topics_view").is(":visible");
-}
-
 export function show() {
     if (is_visible()) {
         // If we're already visible, E.g. because the user hit Esc

static/js/recent_topics_util.js

@@ -0,0 +1,25 @@
+import $ from "jquery";
+
+import * as compose_state from "./compose_state";
+import * as overlays from "./overlays";
+import * as popovers from "./popovers";
+
+export function is_visible() {
+    return $("#recent_topics_view").is(":visible");
+}
+
+export function is_in_focus() {
+    // Check if user is focused on
+    // recent topics.
+    return (
+        is_visible() &&
+        !compose_state.composing() &&
+        !popovers.any_active() &&
+        !overlays.is_active() &&
+        !$(".home-page-input").is(":focus")
+    );
+}
+
+export function get_topic_key(stream_id, topic) {
+    return stream_id + ":" + topic.toLowerCase();
+}

static/js/stream_events.js

@@ -9,7 +9,7 @@ import * as message_view_header from "./message_view_header";
 import * as narrow_state from "./narrow_state";
 import * as overlays from "./overlays";
 import * as peer_data from "./peer_data";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
 import * as settings_notifications from "./settings_notifications";
 import * as stream_color from "./stream_color";
 import * as stream_data from "./stream_data";
@@ -46,7 +46,7 @@ export function update_property(stream_id, property, value, other_values) {
             break;
         case "in_home_view":
             stream_muting.update_is_muted(sub, !value);
-            recent_topics.complete_rerender();
+            recent_topics_ui.complete_rerender();
             break;
         case "desktop_notifications":
         case "audible_notifications":

static/js/ui_init.js

@@ -47,7 +47,7 @@ import * as people from "./people";
 import * as pm_conversations from "./pm_conversations";
 import * as presence from "./presence";
 import * as realm_playground from "./realm_playground";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_util from "./recent_topics_util";
 import * as reload from "./reload";
 import * as resize from "./resize";
 import * as rows from "./rows";
@@ -146,7 +146,7 @@ export function initialize_kitchen_sink_stuff() {
 
     message_viewport.message_pane.on("wheel", (e) => {
         const delta = e.originalEvent.deltaY;
-        if (!overlays.is_active() && !recent_topics.is_visible()) {
+        if (!overlays.is_active() && !recent_topics_util.is_visible()) {
             // In the message view, we use a throttled mousewheel handler.
             throttled_mousewheelhandler(e, delta);
         }

static/js/unread_ops.js

@@ -5,7 +5,7 @@ import * as message_lists from "./message_lists";
 import * as message_store from "./message_store";
 import * as message_viewport from "./message_viewport";
 import * as notifications from "./notifications";
-import * as recent_topics from "./recent_topics";
+import * as recent_topics_ui from "./recent_topics_ui";
 import * as reload from "./reload";
 import * as unread from "./unread";
 import * as unread_ui from "./unread_ui";
@@ -36,7 +36,7 @@ function process_newly_read_message(message, options) {
         message_list.narrowed.show_message_as_read(message, options);
     }
     notifications.close_notification(message);
-    recent_topics.update_topic_unread_count(message);
+    recent_topics_ui.update_topic_unread_count(message);
 }
 
 export function process_read_messages_event(message_ids) {

tools/test-js-with-node

@@ -107,7 +107,8 @@ EXEMPT_FILES = {
     "static/js/realm_icon.js",
     "static/js/realm_logo.js",
     "static/js/realm_playground.js",
-    "static/js/recent_topics.js",
+    "static/js/recent_topics_ui.js",
+    "static/js/recent_topics_util.js",
     "static/js/reload.js",
     "static/js/reminder.js",
     "static/js/resize.js",