From 59c5ac0cb57769ed635372e17deddafcbe3a4589 Mon Sep 17 00:00:00 2001
From: Rui Matos <tiagomatos@gmail.com>
Date: Wed, 10 Sep 2014 19:16:01 +0200
Subject: [PATCH] backends: Add a keymap-layout-group-changed signal

We'll need this in the wayland frontend to send a modifiers event to
clients.

Note that on X11 this isn't needed because key events include the
group index encoded in modifier state. If we ever want to make the
wayland frontend work with the X11 backend we'll handle it then.

https://bugzilla.gnome.org/show_bug.cgi?id=736433
---
 src/backends/meta-backend.c               | 6 ++++++
 src/backends/native/meta-backend-native.c | 1 +
 2 files changed, 7 insertions(+)

diff --git a/src/backends/meta-backend.c b/src/backends/meta-backend.c
index 424208180..a3b74ed18 100644
--- a/src/backends/meta-backend.c
+++ b/src/backends/meta-backend.c
@@ -254,6 +254,12 @@ meta_backend_class_init (MetaBackendClass *klass)
                 0,
                 NULL, NULL, NULL,
                 G_TYPE_NONE, 0);
+  g_signal_new ("keymap-layout-group-changed",
+                G_TYPE_FROM_CLASS (object_class),
+                G_SIGNAL_RUN_LAST,
+                0,
+                NULL, NULL, NULL,
+                G_TYPE_NONE, 1, G_TYPE_UINT);
 }
 
 static void
diff --git a/src/backends/native/meta-backend-native.c b/src/backends/native/meta-backend-native.c
index cb9d3a789..6e2741bae 100644
--- a/src/backends/native/meta-backend-native.c
+++ b/src/backends/native/meta-backend-native.c
@@ -229,6 +229,7 @@ meta_backend_native_lock_layout_group (MetaBackend *backend,
 {
   ClutterDeviceManager *manager = clutter_device_manager_get_default ();
   clutter_evdev_set_keyboard_layout_index (manager, idx);
+  g_signal_emit_by_name (backend, "keymap-layout-group-changed", idx, 0);
 }
 
 static void