tracklist: Add an Unselect All button

This button will unselect any selected tracks when clicked.

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

emmental/tracklist/__init__.py

@@ -29,8 +29,11 @@ class Card(Gtk.Box):
         self._trackview = trackview.TrackView(sql, margin_start=6,
                                               margin_end=6)
         self._visible_cols = buttons.VisibleColumns(self._trackview.columns)
+        self._unselect = Gtk.Button(icon_name="edit-select-none-symbolic",
+                                    has_frame=False, sensitive=False)
 
         self._top_left.append(self._visible_cols)
+        self._top_left.append(self._unselect)
 
         self._top_box.set_start_widget(self._top_left)
         self._top_box.set_center_widget(self._filter)
@@ -38,12 +41,18 @@ class Card(Gtk.Box):
         self.append(self._top_box)
         self.append(self._trackview)
 
+        self._trackview.bind_property("have-selected", self._unselect,
+                                      "sensitive")
         self.bind_property("playlist", self._trackview, "playlist")
 
         self._filter.connect("search-changed", self.__search_changed)
+        self._unselect.connect("clicked", self.__clear_selection)
 
         self.add_css_class("card")
 
+    def __clear_selection(self, unselect: Gtk.Button) -> None:
+        self._trackview.clear_selected_tracks()
+
     def __search_changed(self, filter: entry.Filter) -> None:
         self.sql.tracks.filter(filter.get_query())
 

emmental/tracklist/selection.py

@@ -28,4 +28,3 @@ class OSD(Gtk.Overlay):
     def clear_selection(self, *args) -> None:
         """Clear the current selection."""
         self.selection.unselect_all()
-        self.__selection_changed(self.selection, 0, 0)

icons/scalable/actions/edit-select-none-symbolic.svg

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" height="16px" viewBox="0 0 16 16" width="16px"><path d="m 0 0 v 1.0625 l 1.9375 1.9375 h 1.0625 v -3 z m 4 0 v 2 h 3 v -2 z m 4 0 v 2 h 4 v -2 z m 5 0 v 3 h 3 v -3 z m -13 4 v 4 h 2 v -2.8125 l -1.1875 -1.1875 z m 14 0 v 3 h 2 v -3 z m 0 4 v 4 h 2 v -4 z m -14 1 v 3 h 2 v -3 z m 0 4 v 3 h 3 v -3 z m 13 0 v 1.0625 l 1.9375 1.9375 h 1.0625 v -3 z m -9 1 v 2 h 4 v -2 z m 5 0 v 2 h 3 v -0.8125 l -1.1875 -1.1875 z m 0 0" fill="#2e3436" fill-opacity="0.34902"/><path d="m 1.53125 0.46875 l -1.0625 1.0625 l 14 14 l 1.0625 -1.0625 z m 0 0" fill="#222222"/></svg>

tests/tracklist/test_tracklist.py

@@ -52,6 +52,25 @@ class TestTracklist(tests.util.TestCase):
         self.assertEqual(self.tracklist._top_left.get_first_child(),
                          self.tracklist._visible_cols)
 
+    def test_unselect(self):
+        """Test the unselect button."""
+        self.assertIsInstance(self.tracklist._unselect, Gtk.Button)
+        self.assertEqual(self.tracklist._unselect.get_icon_name(),
+                         "edit-select-none-symbolic")
+        self.assertFalse(self.tracklist._unselect.get_has_frame())
+
+        self.assertFalse(self.tracklist._unselect.get_sensitive())
+        self.tracklist._trackview.have_selected = True
+        self.assertTrue(self.tracklist._unselect.get_sensitive())
+
+        with unittest.mock.patch.object(self.tracklist._trackview,
+                                        "clear_selected_tracks") as mock_clear:
+            self.tracklist._unselect.emit("clicked")
+            mock_clear.assert_called()
+
+        self.assertEqual(self.tracklist._visible_cols.get_next_sibling(),
+                         self.tracklist._unselect)
+
     def test_filter(self):
         """Test the Tracklist Filter entry."""
         self.assertIsInstance(self.tracklist._filter, emmental.entry.Filter)