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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright (C) 2007 William Jon McCann <mccann@jhu.edu>
*
* 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 of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>
#include <glib-object.h>
#include <gio/gio.h>
#include "gdm-settings.h"
#include "gdm-settings-desktop-backend.h"
struct _GdmSettings
{
GObject parent;
GList *backends;
};
enum {
VALUE_CHANGED,
LAST_SIGNAL
};
static guint signals [LAST_SIGNAL] = { 0, };
static void gdm_settings_class_init (GdmSettingsClass *klass);
static void gdm_settings_init (GdmSettings *settings);
static void gdm_settings_finalize (GObject *object);
static gpointer settings_object = NULL;
G_DEFINE_TYPE (GdmSettings, gdm_settings, G_TYPE_OBJECT)
GQuark
gdm_settings_error_quark (void)
{
static GQuark ret = 0;
if (ret == 0) {
ret = g_quark_from_static_string ("gdm_settings_error");
}
return ret;
}
gboolean
gdm_settings_get_value (GdmSettings *settings,
const char *key,
char **value,
GError **error)
{
GError *local_error;
gboolean res;
GList *l;
g_return_val_if_fail (GDM_IS_SETTINGS (settings), FALSE);
g_return_val_if_fail (key != NULL, FALSE);
local_error = NULL;
for (l = settings->backends; l; l = g_list_next (l)) {
GdmSettingsBackend *backend = l->data;
if (local_error) {
g_error_free (local_error);
local_error = NULL;
}
res = gdm_settings_backend_get_value (backend,
key,
value,
&local_error);
if (res)
break;
}
if (! res) {
g_propagate_error (error, local_error);
}
return res;
}
gboolean
gdm_settings_set_value (GdmSettings *settings,
const char *key,
const char *value,
GError **error)
{
GError *local_error;
gboolean res;
GList *l;
g_return_val_if_fail (GDM_IS_SETTINGS (settings), FALSE);
g_return_val_if_fail (key != NULL, FALSE);
g_debug ("Setting value %s", key);
local_error = NULL;
for (l = settings->backends; l; l = g_list_next (l)) {
GdmSettingsBackend *backend = l->data;
if (local_error) {
g_error_free (local_error);
local_error = NULL;
}
res = gdm_settings_backend_set_value (backend,
key,
value,
&local_error);
if (res)
break;
}
if (! res) {
g_propagate_error (error, local_error);
}
return res;
}
static void
gdm_settings_class_init (GdmSettingsClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gdm_settings_finalize;
signals [VALUE_CHANGED] =
g_signal_new ("value-changed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL,
NULL,
g_cclosure_marshal_generic,
G_TYPE_NONE,
3,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING);
}
static void
backend_value_changed (GdmSettingsBackend *backend,
const char *key,
const char *old_value,
const char *new_value,
GdmSettings *settings)
{
g_debug ("Emitting value-changed %s %s %s", key, old_value, new_value);
/* proxy it to internal listeners */
g_signal_emit (settings, signals [VALUE_CHANGED], 0, key, old_value, new_value);
}
static void
gdm_settings_init (GdmSettings *settings)
{
GList *l;
GdmSettingsBackend *backend;
backend = gdm_settings_desktop_backend_new (GDM_CUSTOM_CONF);
if (backend)
settings->backends = g_list_prepend (NULL, backend);
backend = gdm_settings_desktop_backend_new (GDM_RUNTIME_CONF);
if (backend)
settings->backends = g_list_prepend (settings->backends, backend);
for (l = settings->backends; l; l = g_list_next (l)) {
backend = l->data;
g_signal_connect (backend,
"value-changed",
G_CALLBACK (backend_value_changed),
settings);
}
}
static void
gdm_settings_finalize (GObject *object)
{
GdmSettings *settings;
g_return_if_fail (object != NULL);
g_return_if_fail (GDM_IS_SETTINGS (object));
settings = GDM_SETTINGS (object);
g_return_if_fail (settings != NULL);
g_list_foreach (settings->backends, (GFunc) g_object_unref, NULL);
g_list_free (settings->backends);
settings->backends = NULL;
settings_object = NULL;
G_OBJECT_CLASS (gdm_settings_parent_class)->finalize (object);
}
GdmSettings *
gdm_settings_new (void)
{
if (settings_object != NULL) {
g_object_ref (settings_object);
} else {
settings_object = g_object_new (GDM_TYPE_SETTINGS, NULL);
}
return GDM_SETTINGS (settings_object);
}
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