[gnome-games/wip/exalm/n64: 17/21] retro-input-manager: Add controllers-changed signal

[Alexander Mikhaylenko <alexm src gnome org>]

commit 4d1c0d91fe5f3c47f644e2c7dc3c4c4a02ab9f88
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Thu Mar 26 23:49:37 2020 +0500

    retro-input-manager: Add controllers-changed signal

 src/retro/retro-input-manager.vala | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/src/retro/retro-input-manager.vala b/src/retro/retro-input-manager.vala
index 97f6047a..3330e273 100644
--- a/src/retro/retro-input-manager.vala
+++ b/src/retro/retro-input-manager.vala
@@ -1,6 +1,8 @@
 // This file is part of GNOME Games. License: GPL-3.0+.
 
 private class Games.RetroInputManager : Object {
+       public signal void controllers_changed ();
+
        private Retro.Core core;
        private Retro.CoreView view;
        private Retro.Controller core_view_joypad;
@@ -108,6 +110,8 @@ private class Games.RetroInputManager : Object {
                                devices[core_view_joypad_port] = null;
                                update_core_view_gamepad ();
 
+                               controllers_changed ();
+
                                return;
                        }
                }
@@ -118,6 +122,8 @@ private class Games.RetroInputManager : Object {
                devices += null;
                controllers += null;
                update_core_view_gamepad ();
+
+               controllers_changed ();
        }
 
        private void on_device_disconnected (Manette.Device device) {
@@ -144,5 +150,7 @@ private class Games.RetroInputManager : Object {
                        controllers[port] = null;
                        core.set_controller (port, null);
                }
+
+               controllers_changed ();
        }
 }