Track total number of unread messages

(imported from commit 0a6f270b8a4debf0cbb7e869ecbff59f39f22049)

tools/jslint/check-all.js

@@ -76,6 +76,7 @@ var globals =
     + ' at_top_of_viewport at_bottom_of_viewport'
     + ' viewport'
     + ' load_more_messages reset_load_more_status have_scrolled_away_from_top'
+    + ' total_unread_messages'
     ;
 
 

zephyr/static/js/zephyr.js

@@ -181,6 +181,7 @@ function message_range(start, end) {
 }
 
 var unread_filters = {'stream': {}, 'private': {}};
+var total_unread_messages = 0;
 
 // Record each message in the array 'messages' as either read or
 // unread, depending on the value of the 'is_read' flag.
@@ -209,8 +210,12 @@ function process_unread_counts(messages, is_read) {
         }
     });
 
-    $.each(unread_filters["stream"], function(index, obj) {
-        ui.set_count("stream", index, Object.keys(obj).length);
+    total_unread_messages = 0;
+
+    $.each(unread_filters.stream, function(index, obj) {
+        var count = Object.keys(obj).length;
+        ui.set_count("stream", index, count);
+        total_unread_messages += count;
     });
 
     var pm_count = 0;
@@ -218,6 +223,7 @@ function process_unread_counts(messages, is_read) {
         pm_count += Object.keys(obj).length;
     });
     ui.set_count("global", "private", pm_count);
+    total_unread_messages += pm_count;
 }
 
 function update_selected_message(message, opts) {