[gnome-control-center] bluetooth: Center empty states in the panel

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 88b6561c8e8130bf0b72b46de303d98fbb5109b4
Author: Miguel Vaello Martínez <miguel vaellomartinez gmail com>
Date:   Sun Jul 9 15:46:38 2017 +0200

    bluetooth: Center empty states in the panel
    
    For the new or alternative version of Control Center, the Bluetooth
    empty state will be vertically alligned to the center for any
    app window size. Otherwise when the Bluetooh is powered and available,
    the align will be as always.
    
    This changes do not affect to the old version because the windows
    size (for the old version) is always the same and small
    enought to be in the center in any case.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=784720

 panels/bluetooth/cc-bluetooth-panel.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/panels/bluetooth/cc-bluetooth-panel.c b/panels/bluetooth/cc-bluetooth-panel.c
index 3e0c3d2..c4c558f 100644
--- a/panels/bluetooth/cc-bluetooth-panel.c
+++ b/panels/bluetooth/cc-bluetooth-panel.c
@@ -133,6 +133,7 @@ power_callback (GObject          *object,
 static void
 cc_bluetooth_panel_update_power (CcBluetoothPanel *self)
 {
+       GtkAlign valign;
        GObject *toggle;
        gboolean sensitive, powered, change_powered;
        const char *page;
@@ -141,6 +142,7 @@ cc_bluetooth_panel_update_power (CcBluetoothPanel *self)
                 self->priv->has_airplane_mode, self->priv->hardware_airplane_mode, 
self->priv->bt_airplane_mode, self->priv->airplane_mode);
 
        change_powered = TRUE;
+  valign = GTK_ALIGN_CENTER;
 
        if (self->priv->has_airplane_mode == FALSE) {
                g_debug ("No Bluetooth available");
@@ -168,8 +170,10 @@ cc_bluetooth_panel_update_power (CcBluetoothPanel *self)
                sensitive = TRUE;
                powered = TRUE;
                page = BLUETOOTH_WORKING_PAGE;
+               valign = GTK_ALIGN_FILL;
        }
 
+       gtk_widget_set_valign (self->priv->stack, valign);
        gtk_widget_set_sensitive (WID ("box_power") , sensitive);
 
        toggle = G_OBJECT (WID ("switch_bluetooth"));