chore: store filter levels as constant

dzgui/views/pages/log.py

@@ -1,4 +1,5 @@
 from typing import TYPE_CHECKING
+from dzgui.const.constants import LOG_FILTERS
 from dzgui.views.mixins.cursor_mixin import CursorMixin
 from dzgui.views.mixins.help_menu_mixin import HelpMenuMixin
 from dzgui.views.trees.tree_log import LogTreeView
@@ -16,23 +17,20 @@ if TYPE_CHECKING:
 class Log(CursorMixin, HelpMenuMixin, Gtk.Box):  # type: ignore
     def __init__(self, controller: "Controller") -> None:
         super().__init__(orientation=Gtk.Orientation.VERTICAL)
-        # NOTE: LogTreeView is kept in a separate ScrolledWindow so that
-        # checkboxes will be flush on bottom
+        """
+        NOTE: LogTreeView is kept in a separate ScrolledWindow so that
+        checkboxes will be flush on bottom
+        """
         self.scrolled = Gtk.ScrolledWindow()
         self.treeview = LogTreeView(controller)
         self.scrolled.add(self.treeview)
 
         self.check_bar = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)
-        # TODO: strings
-        active = (
-            "WARN",
-            "CRITICAL",
-        )
-        for check in ("WARN", "CRITICAL", "INFO", "DEBUG"):
+
+        for check in LOG_FILTERS:
             c = Gtk.CheckButton(label=check)
             self.check_bar.pack_start(c, False, False, 0)
-            if check in active:
-                c.set_active(True)
+            c.set_active(True)
             c.connect("clicked", self._on_checkbox_clicked)
         self.add(self.scrolled)
         self.add(self.check_bar)