diff options
Diffstat (limited to 'common/gdm-settings.c')
| -rw-r--r-- | common/gdm-settings.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/common/gdm-settings.c b/common/gdm-settings.c new file mode 100644 index 0000000..96c2f8d --- /dev/null +++ b/common/gdm-settings.c @@ -0,0 +1,252 @@ +/* -*- 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); +} + +void +gdm_settings_reload (GdmSettings *settings) +{ + GList *l; + GdmSettingsBackend *backend; + + g_list_foreach (settings->backends, (GFunc) g_object_unref, NULL); + g_list_free (settings->backends); + settings->backends = NULL; + + 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_init (GdmSettings *settings) +{ + gdm_settings_reload (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); +} |