Fix crash on empty timeline

toot/tui/app.py

@@ -314,8 +314,8 @@ class TUI(urwid.Frame):
         status, index, count = timeline.get_focused_status_with_counts()
         self.footer.set_status([
             ("footer_status_bold", "[{}] ".format(timeline.name)),
-            status.id, " - status ", str(index + 1), " of ", str(count),
-        ])
+        ] + ([status.id, " - status ", str(index + 1), " of ", str(count)]
+            if status else ["no focused status"]))
 
     def show_status_source(self, status):
         self.open_overlay(
@@ -324,7 +324,7 @@ class TUI(urwid.Frame):
         )
 
     def show_links(self, status):
-        links = parse_content_links(status.data["content"])
+        links = parse_content_links(status.data["content"]) if status else []
         if links:
             self.open_overlay(
                 widget=StatusLinks(links),

toot/tui/timeline.py

@@ -36,7 +36,10 @@ class Timeline(urwid.Columns):
         self.is_thread = is_thread
         self.statuses = statuses
         self.status_list = self.build_status_list(statuses, focus=focus)
+        try:
             self.status_details = StatusDetails(statuses[focus], is_thread)
+        except IndexError:
+            self.status_details = StatusDetails(None, is_thread)
 
         super().__init__([
             ("weight", 40, self.status_list),
@@ -64,7 +67,10 @@ class Timeline(urwid.Columns):
         })
 
     def get_focused_status(self):
+        try:
             return self.statuses[self.status_list.body.focus]
+        except TypeError:
+            return None
 
     def get_focused_status_with_counts(self):
         """Returns a tuple of:
@@ -97,9 +103,13 @@ class Timeline(urwid.Columns):
         status = self.get_focused_status()
         command = self._command_map[key]
 
+        if not status:
+            return super().keypress(size, key)
+
         # If down is pressed on last status in list emit a signal to load more.
         # TODO: Consider pre-loading statuses earlier
-        if command in [urwid.CURSOR_DOWN, urwid.CURSOR_PAGE_DOWN]:
+        if command in [urwid.CURSOR_DOWN, urwid.CURSOR_PAGE_DOWN] \
+                and self.status_list.body.focus:
             index = self.status_list.body.focus + 1
             count = len(self.statuses)
             if index >= count:
@@ -224,8 +234,9 @@ class StatusDetails(urwid.Pile):
             Whether the status is rendered from a thread status list.
         """
         self.in_thread = in_thread
-        reblogged_by = status.author if status.reblog else None
-        widget_list = list(self.content_generator(status.original, reblogged_by))
+        reblogged_by = status.author if status and status.reblog else None
+        widget_list = list(self.content_generator(status.original, reblogged_by)
+            if status else ())
         return super().__init__(widget_list)
 
     def content_generator(self, status, reblogged_by):