[gnome-games] collection-view: Add keyboard shortcut for ShortcutsWindow

[Alexander Mikhaylenko <alexm src gnome org>]

commit 1f127109e44d09fd7247bc4af7c6ccd76fb7d5e4
Author: Neville <nevilleantony98 gmail com>
Date:   Fri May 1 13:21:52 2020 +0530

    collection-view: Add keyboard shortcut for ShortcutsWindow
    
    Add Ctrl + ? shortcut for displaying ShortcutsWindow in collection-view.
    
    Fixes #285

 src/ui/collection-view.vala | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/src/ui/collection-view.vala b/src/ui/collection-view.vala
index c9be812b..3d30cff4 100644
--- a/src/ui/collection-view.vala
+++ b/src/ui/collection-view.vala
@@ -144,6 +144,15 @@ private class Games.CollectionView : Gtk.Box, UiView {
                        return true;
                }
 
+               if ((keyval == Gdk.Key.question) &&
+                       (event.state & default_modifiers) == (Gdk.ModifierType.CONTROL_MASK | 
Gdk.ModifierType.SHIFT_MASK)) {
+
+                       var shortcuts_window = new ShortcutsWindow ();
+                       shortcuts_window.show_all();
+
+                       return true;
+               }
+
                if (is_collection_empty)
                        return false;