nowplaying: Add a TagInfo window to the Now Playing card

And bind the Player tag properties to the Now Playing card.

Implements: #45 (Create a new NowPlaying widget)
Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

emmental/__init__.py

@@ -66,7 +66,13 @@ class Application(Adw.Application):
 
     def build_now_playing(self) -> nowplaying.Card:
         """Build a new now playing card."""
-        return nowplaying.Card()
+        playing = nowplaying.Card()
+        for prop in ["title", "album", "artist", "album-artist"]:
+            self.player.bind_property(prop, playing, prop)
+        self.db.settings.bind_setting("now-playing.prefer-artist",
+                                      playing, "prefer-artist")
+
+        return playing
 
     def build_window(self) -> window.Window:
         """Build a new window instance."""

emmental/nowplaying/__init__.py

@@ -1,15 +1,31 @@
 # Copyright 2022 (c) Anna Schumaker.
 """A card for displaying information about the currently playing track."""
+from gi.repository import GObject
 from gi.repository import Gtk
+from . import tags
 
 
 class Card(Gtk.Box):
     """The Now Playing information card."""
 
+    title = GObject.Property(type=str)
+    album = GObject.Property(type=str)
+    artist = GObject.Property(type=str)
+    album_artist = GObject.Property(type=str)
+    prefer_artist = GObject.Property(type=bool, default=True)
+
     def __init__(self):
         """Initialize a Now Playing Card."""
         super().__init__()
         self._grid = Gtk.Grid()
+        self._tags = tags.TagInfo()
+
+        for prop in ["title", "album", "artist", "album-artist"]:
+            self.bind_property(prop, self._tags, prop)
+        self.bind_property("prefer-artist", self._tags, "prefer-artist",
+                           GObject.BindingFlags.BIDIRECTIONAL)
+
+        self._grid.attach(self._tags, 0, 0, 1, 1)
 
         self.append(self._grid)
         self.add_css_class("card")

tests/nowplaying/test_nowplaying.py

@@ -19,3 +19,28 @@ class TestNowPlaying(unittest.TestCase):
 
         self.assertEqual(self.card.get_last_child(), self.card._grid)
         self.assertTrue(self.card.has_css_class("card"))
+
+    def test_prefer_artist(self):
+        """Test the 'prefer-artist' property."""
+        self.assertTrue(self.card.prefer_artist)
+
+        self.card.prefer_artist = False
+        self.assertFalse(self.card.prefer_artist)
+        self.assertFalse(self.card._tags.prefer_artist)
+
+        self.card._tags.prefer_artist = True
+        self.assertTrue(self.card.prefer_artist)
+        self.assertTrue(self.card._tags.prefer_artist)
+
+    def test_tags(self):
+        """Test tag properties."""
+        self.assertIsInstance(self.card._tags,
+                              emmental.nowplaying.tags.TagInfo)
+        self.assertEqual(self.card._grid.get_child_at(0, 0), self.card._tags)
+
+        for tag in ["title", "album", "artist", "album-artist"]:
+            with self.subTest(tag=tag):
+                self.card.set_property(tag, f"test {tag}")
+                self.assertEqual(self.card.get_property(tag), f"test {tag}")
+                self.assertEqual(self.card._tags.get_property(tag),
+                                 f"test {tag}")

tests/test_emmental.py

@@ -103,6 +103,19 @@ class TestEmmental(unittest.TestCase):
 
         self.assertEqual(win.header.title, emmental.VERSION_STRING)
 
+    @unittest.mock.patch("sys.stdout", new_callable=io.StringIO)
+    def test_nowplaying(self, mock_stdout: io.StringIO):
+        """Check that the nowplaying widget is wired up properly."""
+        self.application.db = emmental.db.Connection()
+        self.application.player = emmental.audio.Player()
+        win = self.application.build_window()
+
+        for tag in ["title", "album", "artist", "album-artist"]:
+            with self.subTest(tag=tag):
+                self.assertEqual(win.now_playing.get_property(tag), "")
+                self.application.player.set_property(tag, "Test Tag")
+                self.assertEqual(win.now_playing.get_property(tag), "Test Tag")
+
     @unittest.mock.patch("sys.stdout", new_callable=io.StringIO)
     def test_replaygain(self, mock_stdout: io.StringIO):
         """Test setting replaygain modes."""

tests/test_settings.py

@@ -88,3 +88,13 @@ class TestSettings(unittest.TestCase):
         self.assertEqual(self.settings["now-playing.size"], 400)
 
         self.assertEqual(self.app.build_window().now_playing_size, 400)
+
+    def test_save_nowplaying_prefer_artist(self, mock_stdout: io.StringIO):
+        """Check saving and loading the prefer-artist setting."""
+        self.assertTrue(self.win.now_playing.prefer_artist)
+        self.assertTrue(self.settings["now-playing.prefer-artist"])
+
+        self.win.now_playing.prefer_artist = False
+        self.assertFalse(self.settings["now-playing.prefer-artist"])
+
+        self.assertFalse(self.app.build_window().now_playing.prefer_artist)