playlist: Configure playlist random and loop buttons

Sometimes the user is able to change them, but sometimes not. We also
need to set to the current state when changing the current playlist.

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

playlist/controls.py

@@ -1,9 +1,11 @@
 # Copyright 2021 (c) Anna Schumaker.
 from gi.repository import Gtk
+import trackdb
 
 class Controls(Gtk.Box):
     def __init__(self):
         Gtk.Box.__init__(self)
+        self.tag = None
 
         self.search = Gtk.SearchEntry()
         self.search.set_property("placeholder-text", "Type to filter tracks")
@@ -12,10 +14,31 @@ class Controls(Gtk.Box):
 
         self.random = Gtk.ToggleButton()
         self.random.set_icon_name("media-playlist-shuffle")
+        self.random.connect("toggled", self.random_toggled)
+        self.random.set_sensitive(False)
         self.append(self.random)
 
         self.loop = Gtk.ToggleButton()
         self.loop.set_icon_name("media-playlist-repeat")
+        self.loop.connect("toggled", self.loop_toggled)
+        self.loop.set_sensitive(False)
         self.append(self.loop)
 
         self.add_css_class("linked")
+
+    def set_tag(self, tag):
+        self.tag = tag
+
+        self.random.set_sensitive(tag.can_random())
+        self.random.set_active(tag.random)
+
+        self.loop.set_sensitive(tag.can_loop())
+        self.loop.set_active(tag.loop)
+
+    def random_toggled(self, toggle):
+        self.tag.random = toggle.get_active()
+        trackdb.save()
+
+    def loop_toggled(self, toggle):
+        self.tag.loop = toggle.get_active()
+        trackdb.save()

playlist/test_controls.py

@@ -24,3 +24,30 @@ class TestPlaylistControls(unittest.TestCase):
         self.assertIn(ctrl.search, ctrl)
         self.assertIn(ctrl.random, ctrl)
         self.assertIn(ctrl.loop, ctrl)
+
+    def test_playlist_controls_set_tag(self):
+        ctrl = controls.Controls()
+        fav  = trackdb.tags.User["Favorites"]
+        prev = trackdb.tags.User["Previous"]
+
+        self.assertIsNone(ctrl.tag)
+        self.assertFalse(ctrl.random.get_sensitive())
+        self.assertFalse(ctrl.random.get_active())
+        self.assertFalse(ctrl.loop.get_sensitive())
+        self.assertFalse(ctrl.loop.get_active())
+
+        fav.random = True
+        fav.loop = True
+        ctrl.set_tag(fav)
+        self.assertEqual(ctrl.tag, fav)
+        self.assertTrue(ctrl.random.get_sensitive())
+        self.assertTrue(ctrl.random.get_active())
+        self.assertTrue(ctrl.loop.get_sensitive())
+        self.assertTrue(ctrl.loop.get_active())
+
+        ctrl.set_tag(prev)
+        self.assertEqual(ctrl.tag, prev)
+        self.assertFalse(ctrl.random.get_sensitive())
+        self.assertFalse(ctrl.random.get_active())
+        self.assertFalse(ctrl.loop.get_sensitive())
+        self.assertFalse(ctrl.loop.get_active())