[gnome-games/wip/aplazas/gamepad-shoulders-view: 11/12] collection-box: Select the view with gamepad shoulders

[Adrien Plazas <aplazas src gnome org>]

commit 24f2c79a47b416a76556c32b2607e93a49578083
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Aug 3 19:53:04 2018 +0200

    collection-box: Select the view with gamepad shoulders

 src/ui/collection-box.vala | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)
---
diff --git a/src/ui/collection-box.vala b/src/ui/collection-box.vala
index 78f6acfc..cc28c476 100644
--- a/src/ui/collection-box.vala
+++ b/src/ui/collection-box.vala
@@ -51,7 +51,37 @@ private class Games.CollectionBox : Gtk.Box {
        }
 
        public bool gamepad_button_press_event (Manette.Event event) {
-               return collection_view.gamepad_button_press_event (event);
+               if (!visible)
+                       return false;
+
+               uint16 button;
+               if (!event.get_button (out button))
+                       return false;
+
+               switch (button) {
+               case EventCode.BTN_TL:
+                       var views = viewstack.get_children ();
+                       unowned List<Gtk.Widget> current_view = views.find (viewstack.visible_child);
+
+                       assert (current_view != null);
+
+                       if (current_view.prev != null)
+                               viewstack.visible_child = current_view.prev.data;
+
+                       return true;
+               case EventCode.BTN_TR:
+                       var views = viewstack.get_children ();
+                       unowned List<Gtk.Widget> current_view = views.find (viewstack.visible_child);
+
+                       assert (current_view != null);
+
+                       if (current_view.next != null)
+                               viewstack.visible_child = current_view.next.data;
+
+                       return true;
+               default:
+                       return collection_view.gamepad_button_press_event (event);
+               }
        }
 
        public bool gamepad_button_release_event (Manette.Event event) {