gtk: Add a TagList listmodel

This includes a treemodel property that is intended to be set on a
listview to show our tag tree.

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

tests/gtk/test_tree.py

@@ -267,3 +267,64 @@ class TestTagDeviceList(unittest.TestCase):
         then = now - datetime.timedelta(seconds=42)
         self.tag.add_run(2, "/dev/vda2", then)
         self.assertEqual(self.tag.get_earliest_run().runid, 2)
+
+
+class TestTagList(unittest.TestCase):
+    """Test case for our TagList ListModel."""
+
+    def setUp(self):
+        """Set up common variables."""
+        self.xfstestsdb = xfstestsdb.Command()
+        with unittest.mock.patch("sys.stdout"):
+            self.xfstestsdb.run(["new", "/dev/vda2"])
+            self.xfstestsdb.run(["new", "/dev/vda1"])
+            self.xfstestsdb.run(["new", "/dev/vda1"])
+            self.xfstestsdb.run(["new", "/dev/vda3"])
+
+            self.xfstestsdb.run(["tag", "1", "mytag2"])
+            self.xfstestsdb.run(["tag", "2", "mytag2"])
+            self.xfstestsdb.run(["tag", "4", "mytag1"])
+
+        self.taglist = xfstestsdb.gtk.tree.TagList(self.xfstestsdb.sql)
+
+    def test_init(self):
+        """Test that the TagList was set up properly."""
+        self.assertIsInstance(self.taglist, GObject.GObject)
+        self.assertIsInstance(self.taglist, Gio.ListModel)
+
+    def test_get_item_type(self):
+        """Test the get_item_type() function."""
+        self.assertEqual(self.taglist.get_item_type(),
+                         xfstestsdb.gtk.tree.TagDeviceList.__gtype__)
+
+    def test_get_n_items(self):
+        """Test the get_n_items() function."""
+        self.assertEqual(self.taglist.get_n_items(), 2)
+        self.assertEqual(self.taglist.n_items, 2)
+
+    def test_get_item(self):
+        """Test the get_item() function."""
+        self.assertIsInstance(self.taglist.get_item(0),
+                              xfstestsdb.gtk.tree.TagDeviceList)
+        self.assertIsInstance(self.taglist[0][0][0].timestamp,
+                              datetime.datetime)
+        self.assertEqual(self.taglist.get_item(0).name, "mytag1")
+        self.assertEqual(self.taglist.get_item(1).name, "mytag2")
+
+    def test_treemodel(self):
+        """Test the treemodel property."""
+        self.assertIsInstance(self.taglist.treemodel, Gtk.TreeListModel)
+        self.assertFalse(self.taglist.treemodel.props.passthrough)
+        self.assertFalse(self.taglist.treemodel.props.autoexpand)
+
+        tree = self.taglist.treemodel
+        self.assertEqual(tree[0].get_item().name, "mytag1")
+        tree[0].set_expanded(True)
+        self.assertEqual(tree[1].get_item().name, "/dev/vda3")
+        tree[1].set_expanded(True)
+        self.assertEqual(tree[2].get_item().runid, 4)
+
+        self.assertEqual(tree[3].get_item().name, "mytag2")
+        tree[3].set_expanded(True)
+        self.assertEqual(tree[4].get_item().name, "/dev/vda1")
+        self.assertEqual(tree[5].get_item().name, "/dev/vda2")

xfstestsdb/gtk/tree.py

@@ -180,3 +180,45 @@ class TagDeviceList(GObject.GObject, Gio.ListModel):
         """Get the earliest run added to the tag."""
         runs = [d.get_earliest_run() for d in self.__devices]
         return min(runs, default=None)
+
+
+class TagList(GObject.GObject, Gio.ListModel):
+    """A list containing all tagged xfstests runs."""
+
+    n_items = GObject.Property(type=int)
+    treemodel = GObject.Property(type=Gtk.TreeListModel)
+
+    def __init__(self, sql: sqlite.Connection) -> None:
+        """Initialize our TagList."""
+        super().__init__()
+
+        tags = {}
+        for row in sql("""SELECT DISTINCT runid, device, timestamp, tag
+                       FROM tagged_runs WHERE tag IS NOT NULL""").fetchall():
+            if (tag := tags.get(row['tag'])) is None:
+                tags[row['tag']] = tag = TagDeviceList(row['tag'])
+            ts = datetime.datetime.fromisoformat(row['timestamp'])
+            tag.add_run(row['runid'], row['device'], ts)
+
+        self.__items = sorted(tags.values())
+        self.n_items = len(self.__items)
+        self.treemodel = Gtk.TreeListModel.new(root=self, passthrough=False,
+                                               autoexpand=False,
+                                               create_func=self.__create_func)
+
+    def __create_func(self, item: GObject.GObject) -> Gio.ListModel:
+        if isinstance(item, TagDeviceList | DeviceRunsList):
+            return item
+        return None
+
+    def do_get_item_type(self) -> GObject.GType:
+        """Get the type of objects in the list."""
+        return TagDeviceList.__gtype__
+
+    def do_get_n_items(self) -> int:
+        """Get the number of items in the list."""
+        return self.n_items
+
+    def do_get_item(self, n: int) -> TagDeviceList:
+        """Get a specific item in the list."""
+        return self.__items[n]