audio: Create a custom AutoPauseControlBox

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

audio/controls.py

@@ -53,6 +53,15 @@ class ControlScaleBox(scale.ScaleButtonBox):
         pass
 
 
+class AutoPauseControlBox(ControlScaleBox):
+    def __init__(self, apscale):
+        ControlScaleBox.__init__(self, apscale)
+
+    def on_value_changed(self, scale, icon):
+        name = "start" if scale.get_value() == -1 else "pause"
+        icon.set_from_icon_name(f"media-playback-{name}")
+
+
 class VolumeControlBox(ControlScaleBox):
     def __init__(self, player):
         ControlScaleBox.__init__(self, scale.VolumeScale(player))

audio/test_controls.py

@@ -84,6 +84,19 @@ class TestControlScaleBox(unittest.TestCase):
         self.assertTrue(ctrlbox.get_first_child().has_css_class("large-icons"))
 
 
+class TestAutoPauseControlBox(unittest.TestCase):
+    def test_autopause_control_box(self):
+        apscale = scale.AutoPauseScale()
+        apbox = controls.AutoPauseControlBox(apscale)
+        icon = apbox.get_first_child()
+
+        self.assertIsInstance(apbox, controls.ControlScaleBox)
+        apscale.set_value(-1)
+        self.assertEqual(icon.get_icon_name(), "media-playback-start")
+        apscale.set_value(0)
+        self.assertEqual(icon.get_icon_name(), "media-playback-pause")
+
+
 class TestVolumeControlbox(unittest.TestCase):
     def test_volume_control_box(self):
         fake = FakePlayer()