Fallback to list view when FlowBox is not supported

lutris/gui/flowbox.py

@@ -2,6 +2,13 @@ from lutris import pga
 from gi.repository import Gtk, GObject, GLib
 from lutris.gui.widgets import get_pixbuf_for_game
 
+try:
+    FlowBox = Gtk.FlowBox
+    FLOWBOX_SUPPORTED = True
+except AttributeError:
+    FlowBox = object
+    FLOWBOX_SUPPORTED = False
+
 
 class GameItem(Gtk.VBox):
     def __init__(self, game, parent, icon_type='banner'):
@@ -62,7 +69,7 @@ class GameItem(Gtk.VBox):
         self.parent.popup_contextual_menu(event, self)
 
 
-class GameFlowBox(Gtk.FlowBox):
+class GameFlowBox(FlowBox):
     __gsignals__ = {
         "game-selected": (GObject.SIGNAL_RUN_FIRST, None, ()),
         "game-activated": (GObject.SIGNAL_RUN_FIRST, None, ()),

lutris/gui/lutriswindow.py

@@ -27,7 +27,7 @@ from lutris.gui.uninstallgamedialog import UninstallGameDialog
 from lutris.gui.config_dialogs import (
     AddGameDialog, EditGameConfigDialog, SystemConfigDialog
 )
-from lutris.gui.flowbox import GameFlowBox
+from lutris.gui import flowbox
 from lutris.gui.gameviews import (
     GameListView, GameGridView, ContextualMenu, GameStore
 )
@@ -238,12 +238,12 @@ class LutrisWindow(Gtk.Application):
         gtksettings.set_property("gtk-application-prefer-dark-theme", is_dark)
 
     def get_view(self, view_type):
-        if view_type == 'grid':
+        if view_type == 'grid' and flowbox.FLOWBOX_SUPPORTED:
             # view_type = GameGridView(self.game_store)
-            return GameFlowBox(self.game_list,
+            return flowbox.GameFlowBox(self.game_list,
                                        icon_type=self.icon_type,
                                        filter_installed=self.filter_installed)
-        elif view_type == 'list':
+        else:
             return GameListView(self.game_store)
 
     def connect_signals(self):