[gnome-initial-setup] keyboard: Don't allow moving forward without an input source

[Rui Matos <rtcm src gnome org>]

commit 34b63df2b1c1ee4f56c70fb2cb3f16af4d16ad2f
Author: Rui Matos <tiagomatos gmail com>
Date:   Mon Sep 29 20:06:12 2014 +0200

    keyboard: Don't allow moving forward without an input source
    
    Disable the Next button if no input source has been selected in the
    chooser.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=737493

 .../pages/keyboard/gis-keyboard-page.c             |   22 +++++++++++++++++++-
 1 files changed, 21 insertions(+), 1 deletions(-)
---
diff --git a/gnome-initial-setup/pages/keyboard/gis-keyboard-page.c 
b/gnome-initial-setup/pages/keyboard/gis-keyboard-page.c
index aa497b3..d3af107 100644
--- a/gnome-initial-setup/pages/keyboard/gis-keyboard-page.c
+++ b/gnome-initial-setup/pages/keyboard/gis-keyboard-page.c
@@ -178,6 +178,23 @@ input_confirmed (CcInputChooser  *chooser,
 }
 
 static void
+update_page_complete (GisKeyboardPage *self)
+{
+        GisKeyboardPagePrivate *priv = gis_keyboard_page_get_instance_private (self);
+        gboolean complete;
+
+        complete = cc_input_chooser_get_input_id (CC_INPUT_CHOOSER (priv->input_chooser)) != NULL;
+        gis_page_set_complete (GIS_PAGE (self), complete);
+}
+
+static void
+input_changed (CcInputChooser  *chooser,
+               GisKeyboardPage *self)
+{
+        update_page_complete (self);
+}
+
+static void
 gis_keyboard_page_constructed (GObject *object)
 {
         GisKeyboardPage *self = GIS_KEYBOARD_PAGE (object);
@@ -189,6 +206,8 @@ gis_keyboard_page_constructed (GObject *object)
 
         g_signal_connect (priv->input_chooser, "confirm",
                           G_CALLBACK (input_confirmed), self);
+        g_signal_connect (priv->input_chooser, "changed",
+                          G_CALLBACK (input_changed), self);
 
        priv->input_settings = g_settings_new (GNOME_DESKTOP_INPUT_SOURCES_DIR);
        g_settings_delay (priv->input_settings);
@@ -209,7 +228,8 @@ gis_keyboard_page_constructed (GObject *object)
        if (gis_driver_get_mode (GIS_PAGE (self)->driver) == GIS_DRIVER_MODE_NEW_USER)
                priv->permission = polkit_permission_new_sync ("org.freedesktop.locale1.set-keyboard", NULL, 
NULL, NULL);
 
-        gis_page_set_complete (GIS_PAGE (self), TRUE);
+        update_page_complete (self);
+
         gtk_widget_show (GTK_WIDGET (self));
 }