sidebar: Bold the top playlist on the trackdb.Stack

Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

sidebar/__init__.py

@@ -29,6 +29,11 @@ def switch_page(toggle):
         Stack.set_visible_child_name(toggle.get_name())
         settings.set("sidebar.page", toggle.get_name())
 
+def on_tag_push_pop(old, new):
+    old.widgets.set_label()
+    new.widgets.set_label()
+trackdb.Stack.PushPop.register(on_tag_push_pop)
+
 def add_stack_page(name, page):
     toggle = Gtk.ToggleButton()
     toggle.set_icon_name(page.icon)

sidebar/tagrow.py

@@ -1,5 +1,6 @@
 # Copyright 2021 (c) Anna Schumaker.
-from gi.repository import Gtk, Pango
+from gi.repository import Gtk, GLib, Pango
+import trackdb
 
 class TagRow(Gtk.ListBoxRow):
     def __init__(self, tag, icon):
@@ -23,8 +24,10 @@ class TagRow(Gtk.ListBoxRow):
 
     def set_label(self):
         count = len(self.tag)
+        bold  = trackdb.Stack.current() == self.tag
         text  = f"{self.tag.name}\n{count} Track{'s' if count != 1 else ''}"
-        self.label.set_label(text)
+        self.label.set_markup(("<b>%s</b>" if bold else "%s") % 
+                              GLib.markup_escape_text(text))
 
 
 class ParentTagRow(TagRow):