boxes: Add status marker as a suffix to sender name in content header.

This commit adds a status marker right after the sender's name in a
message content header. The users' dict from model is used to get
status of the sender. The default status of sender is kept `inactive`.

NOTE: Currently,

 * the status markers don't get updated regularly (only specific
   updates for events `handle_update_message_event`), and
 * 'all' the message headers (markers) don't get updated,

which would need implementing their handling in separate commits.
(potentially amending `start_presence_updates`)

Tests amended.

Fixes zulip#896.

Author: Ezio-Sarthak

tests/ui/test_ui_tools.py

@@ -11,6 +11,7 @@
 from zulipterminal.config.symbols import (
     QUOTED_TEXT_MARKER,
     STATUS_ACTIVE,
+    STATUS_INACTIVE,
     STREAM_TOPIC_SEPARATOR,
     TIME_MENTION_MARKER,
 )
@@ -1784,9 +1785,11 @@ def test_msg_generates_search_and_header_bar(self, mocker,
     @pytest.mark.parametrize('starred_msg', ['this', 'last', 'neither'],
                              ids=['this_starred', 'last_starred', 'no_stars'])
     @pytest.mark.parametrize('expected_header, to_vary_in_last_message', [
-        (['alice', ' ', 'DAYDATETIME'], {'sender_full_name': 'bob'}),
-        ([' ', ' ', 'DAYDATETIME'], {'timestamp': 1532103779}),
-        (['alice', ' ', 'DAYDATETIME'], {'timestamp': 0}),
+        (['alice', STATUS_INACTIVE, ' ', 'DAYDATETIME'],
+         {'sender_full_name': 'bob'}),
+        ([' ', ' ', ' ', 'DAYDATETIME'], {'timestamp': 1532103779}),
+        (['alice', STATUS_INACTIVE, ' ', 'DAYDATETIME'],
+         {'timestamp': 0}),
     ], ids=['show_author_as_authors_different',
             'merge_messages_as_only_slightly_earlier_message',
             'dont_merge_messages_as_much_earlier_message'])
@@ -1813,10 +1816,10 @@ def test_main_view_content_header_without_header(self, mocker, message,
 
         msg_box = MessageBox(this_msg, self.model, last_msg)
 
-        expected_header[1] = output_date_time
+        expected_header[2] = output_date_time
         if current_year > 2018:
-            expected_header[1] = '2018 - ' + expected_header[1]
-        expected_header[2] = '*' if starred_msg == 'this' else ' '
+            expected_header[2] = '2018 - ' + expected_header[2]
+        expected_header[3] = '*' if starred_msg == 'this' else ' '
 
         view_components = msg_box.main_view()
 

zulipterminal/ui_tools/boxes.py

@@ -36,6 +36,7 @@
     TIME_MENTION_MARKER,
 )
 from zulipterminal.helper import (
+    STATE_ICON,
     Message,
     asynch,
     format_string,
@@ -1188,11 +1189,19 @@ def main_view(self) -> List[Any]:
 
         if any_differences:  # Construct content_header, if needed
             TextType = Dict[str, Tuple[Optional[str], str]]
-            text_keys = ('author', 'star', 'time')
+            text_keys = ('author', 'star', 'time', 'status')
             text: TextType = {key: (None, ' ') for key in text_keys}
 
             if any(different[key] for key in ('recipients', 'author', '24h')):
                 text['author'] = ('name', message['this']['author'])
+
+                users = self.model.users.copy()
+                status = next(iter(
+                    user['status'] for user in users
+                    if user['full_name'] == message['this']['author']
+                ), 'inactive')
+                text['status'] = (f"user_{status}", STATE_ICON[status])
+
             if message['this']['is_starred']:
                 text['star'] = ('starred', "*")
             if any(different[key]
@@ -1208,7 +1217,8 @@ def main_view(self) -> List[Any]:
                     text['time'] = ('time', message['this']['time'])
 
             content_header = urwid.Columns([
-                ('weight', 10, urwid.Text(text['author'])),
+                ('pack', urwid.Text(text['author'])),
+                ('weight', 1, urwid.Text(text['status'])),
                 (26, urwid.Text(text['time'], align='right')),
                 (1, urwid.Text(text['star'], align='right')),
                 ], dividechars=1)