[134] | 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
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| 2 | * |
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| 3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | * |
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| 19 | */ |
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| 20 | |
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| 21 | #include "config.h" |
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| 22 | |
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| 23 | #include <stdlib.h> |
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| 24 | #include <stdio.h> |
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| 25 | #include <fcntl.h> |
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| 26 | #include <unistd.h> |
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| 27 | #include <string.h> |
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| 28 | #include <signal.h> |
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| 29 | #include <sys/stat.h> |
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| 30 | #include <sys/types.h> |
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| 31 | |
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| 32 | #include <glib.h> |
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| 33 | #include <glib/gi18n.h> |
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| 34 | #include <glib-object.h> |
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| 35 | |
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| 36 | #include "gdm-settings-backend.h" |
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| 37 | |
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| 38 | #include "gdm-marshal.h" |
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| 39 | |
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| 40 | #define GDM_SETTINGS_BACKEND_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_SETTINGS_BACKEND, GdmSettingsBackendPrivate)) |
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| 41 | |
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| 42 | struct GdmSettingsBackendPrivate |
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| 43 | { |
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| 44 | gpointer dummy; |
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| 45 | }; |
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| 46 | |
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| 47 | enum { |
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| 48 | VALUE_CHANGED, |
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| 49 | LAST_SIGNAL |
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| 50 | }; |
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| 51 | |
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| 52 | static guint signals [LAST_SIGNAL] = { 0, }; |
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| 53 | |
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| 54 | static void gdm_settings_backend_class_init (GdmSettingsBackendClass *klass); |
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| 55 | static void gdm_settings_backend_init (GdmSettingsBackend *settings_backend); |
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| 56 | static void gdm_settings_backend_finalize (GObject *object); |
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| 57 | |
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| 58 | G_DEFINE_ABSTRACT_TYPE (GdmSettingsBackend, gdm_settings_backend, G_TYPE_OBJECT) |
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| 59 | |
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| 60 | GQuark |
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| 61 | gdm_settings_backend_error_quark (void) |
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| 62 | { |
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| 63 | static GQuark ret = 0; |
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| 64 | if (ret == 0) { |
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| 65 | ret = g_quark_from_static_string ("gdm_settings_backend_error"); |
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| 66 | } |
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| 67 | |
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| 68 | return ret; |
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| 69 | } |
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| 70 | |
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| 71 | static gboolean |
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| 72 | gdm_settings_backend_real_get_value (GdmSettingsBackend *settings_backend, |
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| 73 | const char *key, |
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| 74 | char **value, |
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| 75 | GError **error) |
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| 76 | { |
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| 77 | g_return_val_if_fail (GDM_IS_SETTINGS_BACKEND (settings_backend), FALSE); |
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| 78 | |
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| 79 | return FALSE; |
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| 80 | } |
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| 81 | |
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| 82 | static gboolean |
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| 83 | gdm_settings_backend_real_set_value (GdmSettingsBackend *settings_backend, |
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| 84 | const char *key, |
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| 85 | const char *value, |
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| 86 | GError **error) |
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| 87 | { |
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| 88 | g_return_val_if_fail (GDM_IS_SETTINGS_BACKEND (settings_backend), FALSE); |
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| 89 | |
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| 90 | return FALSE; |
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| 91 | } |
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| 92 | |
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| 93 | gboolean |
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| 94 | gdm_settings_backend_get_value (GdmSettingsBackend *settings_backend, |
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| 95 | const char *key, |
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| 96 | char **value, |
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| 97 | GError **error) |
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| 98 | { |
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| 99 | gboolean ret; |
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| 100 | |
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| 101 | g_return_val_if_fail (GDM_IS_SETTINGS_BACKEND (settings_backend), FALSE); |
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| 102 | |
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| 103 | g_object_ref (settings_backend); |
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| 104 | ret = GDM_SETTINGS_BACKEND_GET_CLASS (settings_backend)->get_value (settings_backend, key, value, error); |
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| 105 | g_object_unref (settings_backend); |
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| 106 | |
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| 107 | return ret; |
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| 108 | } |
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| 109 | |
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| 110 | gboolean |
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| 111 | gdm_settings_backend_set_value (GdmSettingsBackend *settings_backend, |
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| 112 | const char *key, |
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| 113 | const char *value, |
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| 114 | GError **error) |
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| 115 | { |
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| 116 | gboolean ret; |
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| 117 | |
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| 118 | g_return_val_if_fail (GDM_IS_SETTINGS_BACKEND (settings_backend), FALSE); |
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| 119 | |
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| 120 | g_object_ref (settings_backend); |
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| 121 | ret = GDM_SETTINGS_BACKEND_GET_CLASS (settings_backend)->set_value (settings_backend, key, value, error); |
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| 122 | g_object_unref (settings_backend); |
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| 123 | |
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| 124 | return ret; |
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| 125 | } |
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| 126 | |
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| 127 | void |
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| 128 | gdm_settings_backend_value_changed (GdmSettingsBackend *settings_backend, |
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| 129 | const char *key, |
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| 130 | const char *old_value, |
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| 131 | const char *new_value) |
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| 132 | { |
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| 133 | g_return_if_fail (GDM_IS_SETTINGS_BACKEND (settings_backend)); |
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| 134 | |
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| 135 | g_signal_emit (settings_backend, signals[VALUE_CHANGED], 0, key, old_value, new_value); |
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| 136 | } |
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| 137 | |
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| 138 | static void |
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| 139 | gdm_settings_backend_class_init (GdmSettingsBackendClass *klass) |
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| 140 | { |
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| 141 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
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| 142 | |
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| 143 | object_class->finalize = gdm_settings_backend_finalize; |
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| 144 | |
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| 145 | klass->get_value = gdm_settings_backend_real_get_value; |
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| 146 | klass->set_value = gdm_settings_backend_real_set_value; |
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| 147 | |
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| 148 | signals [VALUE_CHANGED] = |
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| 149 | g_signal_new ("value-changed", |
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| 150 | G_TYPE_FROM_CLASS (object_class), |
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| 151 | G_SIGNAL_RUN_LAST, |
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| 152 | G_STRUCT_OFFSET (GdmSettingsBackendClass, value_changed), |
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| 153 | NULL, |
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| 154 | NULL, |
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| 155 | gdm_marshal_VOID__STRING_STRING_STRING, |
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| 156 | G_TYPE_NONE, |
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| 157 | 3, |
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| 158 | G_TYPE_STRING, |
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| 159 | G_TYPE_STRING, |
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| 160 | G_TYPE_STRING); |
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| 161 | |
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| 162 | g_type_class_add_private (klass, sizeof (GdmSettingsBackendPrivate)); |
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| 163 | } |
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| 164 | |
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| 165 | static void |
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| 166 | gdm_settings_backend_init (GdmSettingsBackend *settings_backend) |
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| 167 | { |
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| 168 | settings_backend->priv = GDM_SETTINGS_BACKEND_GET_PRIVATE (settings_backend); |
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| 169 | } |
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| 170 | |
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| 171 | static void |
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| 172 | gdm_settings_backend_finalize (GObject *object) |
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| 173 | { |
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| 174 | GdmSettingsBackend *settings_backend; |
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| 175 | |
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| 176 | g_return_if_fail (object != NULL); |
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| 177 | g_return_if_fail (GDM_IS_SETTINGS_BACKEND (object)); |
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| 178 | |
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| 179 | settings_backend = GDM_SETTINGS_BACKEND (object); |
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| 180 | |
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| 181 | g_return_if_fail (settings_backend->priv != NULL); |
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| 182 | |
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| 183 | G_OBJECT_CLASS (gdm_settings_backend_parent_class)->finalize (object); |
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| 184 | } |
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