[gnome-games] games-page: Enable selection mode on right click and long press

[Alexander Mikhaylenko <alexm src gnome org>]

commit af00f7a739a20c1e98ee327fddeb6023521ba8f4
Author: Neville <nevilleantony98 gmail com>
Date:   Tue Aug 25 19:06:44 2020 +0530

    games-page: Enable selection mode on right click and long press
    
    Enables selection mode with the currently selected item as selected on
    right clicking or long pressing a GameIconView.

 src/ui/games-page.vala | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/src/ui/games-page.vala b/src/ui/games-page.vala
index 27a2dee9..625af703 100644
--- a/src/ui/games-page.vala
+++ b/src/ui/games-page.vala
@@ -233,6 +233,14 @@ private class Games.GamesPage : Gtk.Bin {
                        selected_items_changed ();
                });
 
+               game_icon.secondary_click.connect (() => {
+                       if (is_selection_mode)
+                               return;
+
+                       is_selection_mode = true;
+                       game_icon.activate ();
+               });
+
                return game_icon;
        }