[geary: 1/3] Enable navigation between 3 main panes using XF86Forward/Back

[Michael Gratton <mjog src gnome org>]

commit 42f5eb2ff2fd58054747e6fd6a5fb3e7c5525395
Author: Michał Kopeć <mkopec12 gmail com>
Date:   Fri Feb 19 23:40:38 2021 +0100

    Enable navigation between 3 main panes using XF86Forward/Back

 src/client/application/application-main-window.vala | 12 ++++++++++++
 1 file changed, 12 insertions(+)
---
diff --git a/src/client/application/application-main-window.vala 
b/src/client/application/application-main-window.vala
index e9d4b10c4..0e1353260 100644
--- a/src/client/application/application-main-window.vala
+++ b/src/client/application/application-main-window.vala
@@ -202,12 +202,24 @@ public class Application.MainWindow :
             "navigate", 1,
             typeof(Gtk.ScrollType), Gtk.ScrollType.PAGE_LEFT
         );
+        Gtk.BindingEntry.add_signal(
+            bindings,
+            Gdk.Key.Back, 0,
+            "navigate", 1,
+            typeof(Gtk.ScrollType), Gtk.ScrollType.PAGE_LEFT
+        );
         Gtk.BindingEntry.add_signal(
             bindings,
             Gdk.Key.Right, MOD1_MASK,
             "navigate", 1,
             typeof(Gtk.ScrollType), Gtk.ScrollType.PAGE_RIGHT
         );
+        Gtk.BindingEntry.add_signal(
+            bindings,
+            Gdk.Key.Forward, 0,
+            "navigate", 1,
+            typeof(Gtk.ScrollType), Gtk.ScrollType.PAGE_RIGHT
+        );
         Gtk.BindingEntry.add_signal(
             bindings,
             Gdk.Key.comma, CONTROL_MASK,