presence: Extract presence.initialize().

frontend_tests/node_tests/activity.js

@@ -844,7 +844,6 @@ run_test('initialize', () => {
     activity.client_is_active = false;
 
     activity.initialize();
-    assert.equal(page_params.presences, undefined);
     clear();
 
     assert(scroll_handler_started);

frontend_tests/node_tests/presence.js

@@ -5,6 +5,7 @@ const return_false = function () { return false; };
 
 set_global('server_events', {});
 set_global('blueslip', {});
+set_global('page_params', {});
 set_global('reload_state', {
     is_in_progress: return_false,
 });
@@ -160,7 +161,11 @@ run_test('set_presence_info', () => {
         },
     };
 
-    presence.set_info(presences, base_time);
+    page_params.presences = presences;
+    page_params.initial_servertime = base_time;
+    presence.initialize();
+
+    assert.equal(page_params.presences, undefined);
 
     assert.deepEqual(presence.presence_info.get(alice.user_id),
                      { status: 'active', last_active: 500}

frontend_tests/node_tests/ui_init.js

@@ -88,6 +88,7 @@ zrequire('invite');
 zrequire('tab_bar');
 zrequire('narrow_state');
 zrequire('people');
+zrequire('presence');
 zrequire('search_pill_widget');
 zrequire('user_groups');
 zrequire('unread');
@@ -158,6 +159,7 @@ page_params.realm_user_groups = [];
 page_params.realm_bots = [];
 page_params.realm_filters = [];
 page_params.starred_messages = [];
+page_params.presences = [];
 
 $('#tab_bar').append = () => {};
 $('#compose').filedrop = () => {};

static/js/activity.js

@@ -354,10 +354,6 @@ exports.initialize = function () {
                     onActive: mark_client_active,
                     keepTracking: true});
 
-    presence.set_info(page_params.presences,
-                      page_params.initial_servertime);
-    delete page_params.presences;
-
     exports.set_cursor_and_filter();
 
     exports.build_user_sidebar();

static/js/presence.js

@@ -151,4 +151,10 @@ exports.last_active_date = function (user_id) {
     return date;
 };
 
+exports.initialize = function () {
+    presence.set_info(page_params.presences,
+                      page_params.initial_servertime);
+    delete page_params.presences;
+};
+
 window.presence = exports;

static/js/ui_init.js

@@ -339,6 +339,7 @@ exports.initialize_everything = function () {
     hashchange.initialize();
     pointer.initialize();
     unread_ui.initialize();
+    presence.initialize();
     activity.initialize();
     emoji_picker.initialize();
     compose_fade.initialize();