[gnome-games] platforms-page: Force hide filtered rows

[Alexander Mikhaylenko <alexm src gnome org>]

commit e2b4a413f787f2ef45a5a9bd72023dd6e197b33d
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Wed Aug 5 23:37:40 2020 +0500

    platforms-page: Force hide filtered rows
    
    Make sure css :first-child and :last-child work correctly.

 src/ui/platforms-page.vala | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/src/ui/platforms-page.vala b/src/ui/platforms-page.vala
index c7ca9645a..3542e225c 100644
--- a/src/ui/platforms-page.vala
+++ b/src/ui/platforms-page.vala
@@ -65,8 +65,10 @@ private class Games.PlatformsPage : Gtk.Bin {
                if (item == null)
                        return false;
 
-               if (item.platform == null)
+               if (item.platform == null) {
+                       row.hide ();
                        return false;
+               }
 
                Game[] visible_games = {};
                for (int i = 0; i < game_model.get_n_items (); i++) {
@@ -77,9 +79,12 @@ private class Games.PlatformsPage : Gtk.Bin {
                }
 
                foreach (var game in visible_games)
-                       if (game.platform == item.platform)
+                       if (game.platform == item.platform) {
+                               row.show ();
                                return true;
+                       }
 
+               row.hide ();
                return false;
        }