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gnome-control-center/panels/region/gnome-region-panel-system.c
Bastien Nocera 6a9881d75f region: Implement copying layouts 
Using systemd's SetX11Keyboard() method in localed. Disable
the functionality altogether if systemd is not found.

This version supports multiple keyboard layouts by passing comma
separated layouts, as supported by X11.

https://bugzilla.gnome.org/show_bug.cgi?id=659300
2011-10-03 12:29:49 +01:00

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/*
* Copyright (C) 2011 Rodrigo Moya
*
* Written by: Rodrigo Moya <rodrigo@gnome.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <polkit/polkit.h>
#include <glib/gi18n.h>
#include <libgnomekbd/gkbd-keyboard-config.h>
#include "cc-common-language.h"
#include "gdm-languages.h"
#include "gnome-region-panel-system.h"
#include "gnome-region-panel-xkb.h"
static GSettings *locale_settings, *xkb_settings;
static GDBusProxy *localed_proxy;
static GPermission *localed_permission;
static void
update_copy_button (GtkBuilder *dialog)
{
GtkWidget *label;
GtkWidget *button;
const gchar *user_lang, *system_lang;
const gchar *user_region, *system_region;
const gchar *user_input_source, *system_input_source;
gboolean layouts_differ;
label = WID ("user_display_language");
user_lang = g_object_get_data (G_OBJECT (label), "language");
label = WID ("system_display_language");
system_lang = g_object_get_data (G_OBJECT (label), "language");
label = WID ("user_format");
user_region = g_object_get_data (G_OBJECT (label), "region");
label = WID ("system_format");
system_region = g_object_get_data (G_OBJECT (label), "region");
label = WID ("user_input_source");
user_input_source = g_object_get_data (G_OBJECT (label), "input_source");
label = WID ("system_input_source");
system_input_source = g_object_get_data (G_OBJECT (label), "input_source");
button = WID ("copy_settings_button");
/* If the version of localed doesn't include layouts... */
if (system_input_source)
layouts_differ = (g_strcmp0 (user_input_source, system_input_source) != 0);
else
layouts_differ = FALSE;
if (g_strcmp0 (user_lang, system_lang) == 0 &&
g_strcmp0 (user_region, system_region) == 0 &&
!layouts_differ)
gtk_widget_set_sensitive (button, FALSE);
else
gtk_widget_set_sensitive (button, TRUE);
}
static void
locale_settings_changed (GSettings *settings,
const gchar *key,
GtkBuilder *dialog)
{
GtkWidget *label;
gchar *region, *display_region;
region = g_settings_get_string (locale_settings, "region");
if (!region || !region[0]) {
label = WID ("user_display_language");
region = g_strdup ((gchar*)g_object_get_data (G_OBJECT (label), "language"));
}
display_region = gdm_get_region_from_name (region, NULL);
label = WID ("user_format");
gtk_label_set_text (GTK_LABEL (label), display_region);
g_object_set_data_full (G_OBJECT (label), "region", g_strdup (region), g_free);
g_free (region);
g_free (display_region);
update_copy_button (dialog);
}
void
system_update_language (GtkBuilder *dialog, const gchar *language)
{
gchar *display_language;
GtkWidget *label;
display_language = gdm_get_language_from_name (language, NULL);
label = WID ("user_display_language");
gtk_label_set_text (GTK_LABEL (label), display_language);
g_object_set_data_full (G_OBJECT (label), "language", g_strdup (language), g_free);
g_free (display_language);
/* need to update the region display in case the setting is '' */
locale_settings_changed (locale_settings, "region", dialog);
update_copy_button (dialog);
}
static void
xkb_settings_changed (GSettings *settings,
const gchar *key,
GtkBuilder *dialog)
{
guint i;
GString *disp, *list;
GtkWidget *label;
gchar **layouts;
layouts = g_settings_get_strv (settings, "layouts");
if (layouts == NULL)
return;
label = WID ("user_input_source");
disp = g_string_new ("");
list = g_string_new ("");
for (i = 0; layouts[i]; i++) {
gchar *utf_visible;
utf_visible = xkb_layout_description_utf8 (layouts[i]);
if (disp->str[0] != '\0')
disp = g_string_append (disp, ", ");
disp = g_string_append (disp, utf_visible ? utf_visible : layouts[i]);
g_free (utf_visible);
if (list->str[0] != '\0')
list = g_string_append (list, ",");
list = g_string_append (list, layouts[i]);
}
g_strfreev (layouts);
g_object_set_data_full (G_OBJECT (label), "input_source", g_string_free (list, FALSE), g_free);
gtk_label_set_text (GTK_LABEL (label), disp->str);
g_string_free (disp, TRUE);
update_copy_button (dialog);
}
static void
update_property (GDBusProxy *proxy,
const char *property)
{
GError *error = NULL;
GVariant *variant;
/* Work around systemd-localed not sending us back
* the property value when changing values */
variant = g_dbus_proxy_call_sync (proxy,
"org.freedesktop.DBus.Properties.Get",
g_variant_new ("(ss)", "org.freedesktop.locale1", property),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
if (variant == NULL) {
g_warning ("Failed to get property '%s': %s", property, error->message);
g_error_free (error);
} else {
GVariant *v;
g_variant_get (variant, "(v)", &v);
g_dbus_proxy_set_cached_property (proxy, property, v);
g_variant_unref (variant);
}
}
static void
on_localed_properties_changed (GDBusProxy *proxy,
GVariant *changed_properties,
const gchar **invalidated_properties,
GtkBuilder *dialog)
{
GVariant *v;
GtkWidget *label;
const char *layout;
char **layouts;
GString *disp;
guint i;
if (invalidated_properties != NULL) {
guint i;
for (i = 0; invalidated_properties[i] != NULL; i++) {
if (g_str_equal (invalidated_properties[i], "Locale"))
update_property (proxy, "Locale");
else if (g_str_equal (invalidated_properties[i], "X11Layout"))
update_property (proxy, "X11Layout");
}
}
v = g_dbus_proxy_get_cached_property (proxy, "Locale");
if (v) {
const gchar **strv;
gsize len;
gint i;
const gchar *lang, *messages, *time;
gchar *name;
GtkWidget *label;
strv = g_variant_get_strv (v, &len);
lang = messages = time = NULL;
for (i = 0; strv[i]; i++) {
if (g_str_has_prefix (strv[i], "LANG=")) {
lang = strv[i] + strlen ("LANG=");
}
else if (g_str_has_prefix (strv[i], "LC_MESSAGES=")) {
messages = strv[i] + strlen ("LC_MESSAGES=");
}
else if (g_str_has_prefix (strv[i], "LC_TIME=")) {
time = strv[i] + strlen ("LC_TIME=");
}
}
if (!messages) {
messages = lang;
}
if (!time) {
time = lang;
}
if (messages) {
name = gdm_get_language_from_name (messages, NULL);
label = WID ("system_display_language");
gtk_label_set_text (GTK_LABEL (label), name);
g_free (name);
g_object_set_data_full (G_OBJECT (label), "language", g_strdup (lang), g_free);
}
if (time) {
name = gdm_get_region_from_name (time, NULL);
label = WID ("system_format");
gtk_label_set_text (GTK_LABEL (label), name);
g_free (name);
g_object_set_data_full (G_OBJECT (label), "region", g_strdup (time), g_free);
}
g_variant_unref (v);
}
label = WID ("system_input_source");
v = g_dbus_proxy_get_cached_property (proxy, "X11Layout");
if (v) {
layout = g_variant_get_string (v, NULL);
g_object_set_data_full (G_OBJECT (label), "input_source", g_strdup (layout), g_free);
} else {
g_object_set_data_full (G_OBJECT (label), "input_source", NULL, g_free);
update_copy_button (dialog);
return;
}
disp = g_string_new ("");
layouts = g_strsplit (layout, ",", -1);
for (i = 0; layouts[i]; i++) {
gchar *utf_visible;
utf_visible = xkb_layout_description_utf8 (layouts[i]);
if (disp->str[0] != '\0')
disp = g_string_append (disp, ", ");
disp = g_string_append (disp, utf_visible ? utf_visible : layouts[i]);
g_free (utf_visible);
}
gtk_label_set_text (GTK_LABEL (label), disp->str);
g_string_free (disp, TRUE);
g_variant_unref (v);
update_copy_button (dialog);
}
static void
localed_proxy_ready (GObject *source,
GAsyncResult *res,
GtkBuilder *dialog)
{
GError *error = NULL;
localed_proxy = g_dbus_proxy_new_finish (res, &error);
if (!localed_proxy) {
g_warning ("Failed to contact localed: %s\n", error->message);
g_error_free (error);
return;
}
g_object_weak_ref (G_OBJECT (dialog), (GWeakNotify) g_object_unref, localed_proxy);
g_signal_connect (localed_proxy, "g-properties-changed",
G_CALLBACK (on_localed_properties_changed), dialog);
on_localed_properties_changed (localed_proxy, NULL, NULL, dialog);
}
static void
copy_settings (GtkButton *button, GtkBuilder *dialog)
{
const gchar *language;
const gchar *region;
const gchar *layout;
GtkWidget *label;
GVariantBuilder *b;
gchar *s;
label = WID ("user_display_language");
language = g_object_get_data (G_OBJECT (label), "language");
label = WID ("user_format");
region = g_object_get_data (G_OBJECT (label), "region");
b = g_variant_builder_new (G_VARIANT_TYPE ("as"));
s = g_strconcat ("LANG=", language, NULL);
g_variant_builder_add (b, "s", s);
g_free (s);
if (g_strcmp0 (language, region) != 0) {
s = g_strconcat ("LC_TIME=", region, NULL);
g_variant_builder_add (b, "s", s);
g_free (s);
s = g_strconcat ("LC_NUMERIC=", region, NULL);
g_variant_builder_add (b, "s", s);
g_free (s);
s = g_strconcat ("LC_MONETARY=", region, NULL);
g_variant_builder_add (b, "s", s);
g_free (s);
s = g_strconcat ("LC_MEASUREMENT=", region, NULL);
g_variant_builder_add (b, "s", s);
g_free (s);
}
g_dbus_proxy_call (localed_proxy,
"SetLocale",
g_variant_new ("(asb)", b, TRUE),
G_DBUS_CALL_FLAGS_NONE,
-1, NULL, NULL, NULL);
g_variant_builder_unref (b);
label = WID ("user_input_source");
layout = g_object_get_data (G_OBJECT (label), "input_source");
g_dbus_proxy_call (localed_proxy,
"SetX11Keyboard",
g_variant_new ("(ssssbb)", layout, "", "", "", TRUE, TRUE),
G_DBUS_CALL_FLAGS_NONE,
-1, NULL, NULL, NULL);
}
static void
on_permission_changed (GPermission *permission,
GParamSpec *pspec,
GtkBuilder *dialog)
{
GtkWidget *button;
GtkWidget *label;
gboolean can_acquire;
gboolean allowed;
if (permission) {
can_acquire = g_permission_get_can_acquire (permission);
allowed = g_permission_get_allowed (permission);
}
else {
can_acquire = FALSE;
allowed = FALSE;
}
button = WID ("copy_settings_button");
label = WID ("system-title");
if (!allowed && !can_acquire) {
gtk_label_set_text (GTK_LABEL (label),
_("The login screen, system accounts and new user accounts use the system-wide Region and Language settings."));
gtk_widget_hide (button);
}
else {
gtk_label_set_text (GTK_LABEL (label),
_("The login screen, system accounts and new user accounts use the system-wide Region and Language settings. You may change the system settings to match yours."));
gtk_widget_show (button);
if (allowed) {
gtk_button_set_label (GTK_BUTTON (button), _("Copy Settings"));
}
else {
gtk_button_set_label (GTK_BUTTON (button), _("Copy Settings..."));
}
}
}
void
setup_system (GtkBuilder *dialog)
{
gchar *language;
GDBusConnection *bus;
GtkWidget *button;
localed_permission = polkit_permission_new_sync ("org.freedesktop.locale1.set-locale", NULL, NULL, NULL);
if (localed_permission == NULL) {
GtkWidget *tab_widget, *notebook;
int num;
tab_widget = WID ("table3");
notebook = WID ("region_notebook");
num = gtk_notebook_page_num (GTK_NOTEBOOK (notebook), tab_widget);
gtk_notebook_remove_page (GTK_NOTEBOOK (notebook), num);
return;
}
g_object_weak_ref (G_OBJECT (dialog), (GWeakNotify) g_object_unref, localed_permission);
g_signal_connect (localed_permission, "notify",
G_CALLBACK (on_permission_changed), dialog);
on_permission_changed (localed_permission, NULL, dialog);
button = WID ("copy_settings_button");
g_signal_connect (button, "clicked",
G_CALLBACK (copy_settings), dialog);
locale_settings = g_settings_new ("org.gnome.system.locale");
g_signal_connect (locale_settings, "changed::region",
G_CALLBACK (locale_settings_changed), dialog);
g_object_weak_ref (G_OBJECT (dialog), (GWeakNotify) g_object_unref, locale_settings);
xkb_settings = g_settings_new (GKBD_KEYBOARD_SCHEMA);
g_signal_connect (xkb_settings, "changed::layouts",
G_CALLBACK (xkb_settings_changed), dialog);
g_object_weak_ref (G_OBJECT (dialog), (GWeakNotify) g_object_unref, xkb_settings);
/* Display user settings */
language = cc_common_language_get_current_language ();
system_update_language (dialog, language);
g_free (language);
locale_settings_changed (locale_settings, "region", dialog);
xkb_settings_changed (xkb_settings, "layouts", dialog);
bus = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, NULL);
g_dbus_proxy_new (bus,
G_DBUS_PROXY_FLAGS_NONE,
NULL,
"org.freedesktop.locale1",
"/org/freedesktop/locale1",
"org.freedesktop.locale1",
NULL,
(GAsyncReadyCallback) localed_proxy_ready,
dialog);
g_object_unref (bus);
}
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