[glib] merge GSettings



commit a187634b29b87c25ea0525d01ee2deffea0fb719
Author: Ryan Lortie <desrt desrt ca>
Date:   Fri Apr 16 23:17:01 2010 -0400

    merge GSettings

 gio/Makefile.am         |   30 +-
 gio/gio-marshal.list    |    2 +
 gio/gio.h               |    1 +
 gio/gio.symbols         |   34 +
 gio/gsettings-mapping.c |  367 ++++++++++
 gio/gsettings-mapping.h |   39 ++
 gio/gsettings.c         | 1715 +++++++++++++++++++++++++++++++++++++++++++++++
 gio/gsettings.h         |  203 ++++++
 gio/pltcheck.sh         |    2 +-
 9 files changed, 2379 insertions(+), 14 deletions(-)
---
diff --git a/gio/Makefile.am b/gio/Makefile.am
index 1fe7d07..efefd3b 100644
--- a/gio/Makefile.am
+++ b/gio/Makefile.am
@@ -79,21 +79,25 @@ gio-marshal.c: gio-marshal.h gio-marshal.list
 	$(glib_genmarshal) --prefix=_gio_marshal $(srcdir)/gio-marshal.list --body --internal) > $  tmp && \
 	  mv $  tmp $@
 
+settings_headers = \
+	gsettingsbackend.h		\
+	gsettings.h
+
 settings_sources = \
-	gsettingsbackendinternal.h	\
+	gvdb/gvdb-format.h		\
+	gvdb/gvdb-reader.h		\
+	gvdb/gvdb-reader.c		\
 	gdelayedsettingsbackend.h	\
-	gdelayedsettingsbackend.		\
+	gdelayedsettingsbackend.c	\
 	gnullsettingsbackend.h		\
 	gnullsettingsbackend.c		\
+	gsettingsbackendinternal.h	\
 	gsettingsbackend.c		\
-	gvdb/gvdb-format.h		\
-	gvdb/gvdb-reader.h		\
-	gvdb/gvdb-reader.c		\
 	gsettingsschema.h		\
-	gsettingsschema.c
-
-settings_headers = \
-	gsettingsbackend.h
+	gsettingsschema.c		\
+	gsettings-mapping.h		\
+	gsettings-mapping.c		\
+	gsettings.c
 
 local_sources = \
 	glocaldirectorymonitor.c 	\
@@ -428,7 +432,7 @@ gio_headers =			\
 	gvolumemonitor.h 	\
 	gzlibcompressor.h	\
 	gzlibdecompressor.h	\
-	$(settings_headers) 	\
+	$(settings_headers)	\
 	$(NULL)
 
 gioincludedir=$(includedir)/glib-2.0/gio/
@@ -489,9 +493,9 @@ gio_querymodules_LDADD	 = \
 
 gschema_compile_LDADD = $(top_builddir)/glib/libglib-2.0.la
 gschema_compile_SOURCES = \
-	gvdb/gvdb-format.h	\
-	gvdb/gvdb-builder.h	\
-	gvdb/gvdb-builder.c	\
+	gvdb/gvdb-format.h		\
+	gvdb/gvdb-builder.h		\
+	gvdb/gvdb-builder.c		\
 	gschema-compile.c
 
 dist-hook: $(BUILT_EXTRA_DIST) ../build/win32/vs9/gio.vcproj
diff --git a/gio/gio-marshal.list b/gio/gio-marshal.list
index 269ec35..8439304 100644
--- a/gio/gio-marshal.list
+++ b/gio/gio-marshal.list
@@ -4,3 +4,5 @@ VOID:BOOLEAN,POINTER
 VOID:OBJECT,OBJECT,ENUM
 BOOLEAN:OBJECT,OBJECT
 VOID:STRING,BOXED,BOXED
+BOOL:POINTER,INT
+BOOL:UINT
diff --git a/gio/gio.h b/gio/gio.h
index 861f172..ac0dc7f 100644
--- a/gio/gio.h
+++ b/gio/gio.h
@@ -76,6 +76,7 @@
 #include <gio/goutputstream.h>
 #include <gio/gresolver.h>
 #include <gio/gseekable.h>
+#include <gio/gsettings.h>
 #include <gio/gsimpleasyncresult.h>
 #include <gio/gsocket.h>
 #include <gio/gsocketaddress.h>
diff --git a/gio/gio.symbols b/gio/gio.symbols
index 37e62b1..0842ade 100644
--- a/gio/gio.symbols
+++ b/gio/gio.symbols
@@ -957,6 +957,7 @@ g_socket_protocol_get_type G_GNUC_CONST
 g_socket_msg_flags_get_type G_GNUC_CONST
 g_resolver_error_get_type G_GNUC_CONST
 g_zlib_compressor_format_get_type
+g_settings_bind_flags_get_type
 #endif
 #endif
 
@@ -1352,3 +1353,36 @@ g_settings_backend_writable_changed
 g_settings_backend_changed_tree
 #endif
 #endif
+
+#if IN_HEADER(__G_SETTINGS_H__)
+#if IN_FILE(__G_SETTINGS_C__)
+g_settings_apply
+g_settings_bind
+g_settings_bind_with_mapping
+g_settings_delay
+g_settings_get
+g_settings_get_child
+g_settings_get_has_unapplied
+g_settings_get_type
+g_settings_get_value
+g_settings_is_writable
+g_settings_new
+g_settings_new_with_context
+g_settings_new_with_context_and_path
+g_settings_new_with_path
+g_settings_revert
+g_settings_set
+g_settings_set_value
+g_settings_unbind
+g_settings_get_int
+g_settings_set_int
+g_settings_get_string
+g_settings_set_string
+g_settings_get_strv
+g_settings_set_strv
+g_settings_get_double
+g_settings_set_double
+g_settings_get_boolean
+g_settings_set_boolean
+#endif
+#endif
diff --git a/gio/gsettings-mapping.c b/gio/gsettings-mapping.c
new file mode 100644
index 0000000..e7f1ba5
--- /dev/null
+++ b/gio/gsettings-mapping.c
@@ -0,0 +1,367 @@
+/*
+ * Copyright © 2010 Novell, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Vincent Untz <vuntz gnome org>
+ */
+
+#include "config.h"
+
+#include "gsettings-mapping.h"
+
+static GVariant *
+g_settings_set_mapping_numeric (const GValue       *value,
+                                const GVariantType *expected_type)
+{
+  GVariant *variant = NULL;
+  glong l;
+
+  if (G_VALUE_HOLDS_INT (value))
+    l = g_value_get_int (value);
+  else if (G_VALUE_HOLDS_INT64 (value))
+    l = g_value_get_int64 (value);
+  else if (G_VALUE_HOLDS_DOUBLE (value))
+    l = g_value_get_double (value);
+  else
+    return NULL;
+
+  if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT16))
+    {
+      if (G_MININT16 <= l && l <= G_MAXINT16)
+        variant = g_variant_new_int16 ((gint16) l);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT16))
+    {
+      if (0 <= l && l <= G_MAXUINT16)
+        variant = g_variant_new_uint16 ((guint16) l);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT32))
+    {
+      if (G_MININT32 <= l && l <= G_MAXINT32)
+        variant = g_variant_new_int32 ((gint) l);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT32))
+    {
+      if (0 <= l && l <= G_MAXUINT32)
+        variant = g_variant_new_uint32 ((guint) l);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT64))
+    {
+      if (G_MININT64 <= l && l <= G_MAXINT64)
+        variant = g_variant_new_int64 ((gint64) l);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT64))
+    {
+      if (0 <= l && l <= G_MAXUINT64)
+        variant = g_variant_new_uint64 ((guint64) l);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_HANDLE))
+    {
+      if (0 <= l && l <= G_MAXUINT32)
+        variant = g_variant_new_handle ((guint) l);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_DOUBLE))
+    variant = g_variant_new_double ((double) l);
+
+  return variant;
+}
+
+static GVariant *
+g_settings_set_mapping_unsigned_numeric (const GValue       *value,
+                                         const GVariantType *expected_type)
+{
+  GVariant *variant = NULL;
+  gulong u;
+
+  if (G_VALUE_HOLDS_UINT (value))
+    u = g_value_get_uint (value);
+  else if (G_VALUE_HOLDS_UINT64 (value))
+    u = g_value_get_uint64 (value);
+  else
+    return NULL;
+
+  if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT16))
+    {
+      if (u <= G_MAXINT16)
+        variant = g_variant_new_int16 ((gint16) u);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT16))
+    {
+      if (u <= G_MAXUINT16)
+        variant = g_variant_new_uint16 ((guint16) u);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT32))
+    {
+      if (u <= G_MAXINT32)
+        variant = g_variant_new_int32 ((gint) u);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT32))
+    {
+      if (u <= G_MAXUINT32)
+        variant = g_variant_new_uint32 ((guint) u);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT64))
+    {
+      if (u <= G_MAXINT64)
+        variant = g_variant_new_int64 ((gint64) u);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT64))
+    {
+      if (u <= G_MAXUINT64)
+        variant = g_variant_new_uint64 ((guint64) u);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_HANDLE))
+    {
+      if (u <= G_MAXUINT32)
+        variant = g_variant_new_handle ((guint) u);
+    }
+  else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_DOUBLE))
+    variant = g_variant_new_double ((double) u);
+
+  return variant;
+}
+
+static gboolean
+g_settings_get_mapping_numeric (GValue   *value,
+                                GVariant *variant)
+{
+  const GVariantType *type;
+  glong l;
+
+  type = g_variant_get_type (variant);
+
+  if (g_variant_type_equal (type, G_VARIANT_TYPE_INT16))
+    l = g_variant_get_int16 (variant);
+  else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT32))
+    l = g_variant_get_int32 (variant);
+  else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT64))
+    l = g_variant_get_int64 (variant);
+  else if (g_variant_type_equal (type, G_VARIANT_TYPE_DOUBLE))
+    l = g_variant_get_double (variant);
+  else
+    return FALSE;
+
+  if (G_VALUE_HOLDS_INT (value))
+    {
+      g_value_set_int (value, l);
+      return (G_MININT32 <= l && l <= G_MAXINT32);
+    }
+  else if (G_VALUE_HOLDS_UINT (value))
+    {
+      g_value_set_uint (value, l);
+      return (0 <= l && l <= G_MAXUINT32);
+    }
+  else if (G_VALUE_HOLDS_INT64 (value))
+    {
+      g_value_set_int64 (value, l);
+      return (G_MININT64 <= l && l <= G_MAXINT64);
+    }
+  else if (G_VALUE_HOLDS_UINT64 (value))
+    {
+      g_value_set_uint64 (value, l);
+      return (0 <= l && l <= G_MAXUINT64);
+    }
+  else if (G_VALUE_HOLDS_DOUBLE (value))
+    {
+      g_value_set_double (value, l);
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+g_settings_get_mapping_unsigned_numeric (GValue   *value,
+                                         GVariant *variant)
+{
+  const GVariantType *type;
+  gulong u;
+
+  type = g_variant_get_type (variant);
+
+  if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT16))
+    u = g_variant_get_uint16 (variant);
+  else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT32))
+    u = g_variant_get_uint32 (variant);
+  else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT64))
+    u = g_variant_get_uint64 (variant);
+  else if (g_variant_type_equal (type, G_VARIANT_TYPE_HANDLE))
+    u = g_variant_get_handle (variant);
+  else
+    return FALSE;
+
+  if (G_VALUE_HOLDS_INT (value))
+    {
+      g_value_set_int (value, u);
+      return (u <= G_MAXINT32);
+    }
+  else if (G_VALUE_HOLDS_UINT (value))
+    {
+      g_value_set_uint (value, u);
+      return (u <= G_MAXUINT32);
+    }
+  else if (G_VALUE_HOLDS_INT64 (value))
+    {
+      g_value_set_int64 (value, u);
+      return (u <= G_MAXINT64);
+    }
+  else if (G_VALUE_HOLDS_UINT64 (value))
+    {
+      g_value_set_uint64 (value, u);
+      return (u <= G_MAXUINT64);
+    }
+  else if (G_VALUE_HOLDS_DOUBLE (value))
+    {
+      g_value_set_double (value, u);
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+GVariant *
+g_settings_set_mapping (const GValue       *value,
+                        const GVariantType *expected_type,
+                        gpointer            user_data)
+{
+  gchar *type_string;
+
+  if (G_VALUE_HOLDS_BOOLEAN (value))
+    {
+      if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_BOOLEAN))
+        return g_variant_new_boolean (g_value_get_boolean (value));
+    }
+
+  else if (G_VALUE_HOLDS_CHAR (value)  ||
+           G_VALUE_HOLDS_UCHAR (value))
+    {
+      if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_BYTE))
+        {
+          if (G_VALUE_HOLDS_CHAR (value))
+            return g_variant_new_byte (g_value_get_char (value));
+          else
+            return g_variant_new_byte (g_value_get_uchar (value));
+        }
+    }
+
+  else if (G_VALUE_HOLDS_INT (value)   ||
+           G_VALUE_HOLDS_INT64 (value) ||
+           G_VALUE_HOLDS_DOUBLE (value))
+    return g_settings_set_mapping_numeric (value, expected_type);
+
+  else if (G_VALUE_HOLDS_UINT (value)  ||
+           G_VALUE_HOLDS_UINT64 (value))
+    return g_settings_set_mapping_unsigned_numeric (value, expected_type);
+
+  else if (G_VALUE_HOLDS_STRING (value))
+    {
+      if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_STRING))
+        return g_variant_new_string (g_value_get_string (value));
+      else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_OBJECT_PATH))
+        return g_variant_new_object_path (g_value_get_string (value));
+      else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_SIGNATURE))
+        return g_variant_new_signature (g_value_get_string (value));
+    }
+
+  type_string = g_variant_type_dup_string (expected_type);
+  g_critical ("No GSettings bind handler for type \"%s\".", type_string);
+  g_free (type_string);
+
+  return NULL;
+}
+
+gboolean
+g_settings_get_mapping (GValue   *value,
+                        GVariant *variant,
+                        gpointer  user_data)
+{
+  if (g_variant_is_of_type (variant, G_VARIANT_TYPE_BOOLEAN))
+    {
+      if (!G_VALUE_HOLDS_BOOLEAN (value))
+        return FALSE;
+      g_value_set_boolean (value, g_variant_get_boolean (variant));
+      return TRUE;
+    }
+
+  else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_BYTE))
+    {
+      if (G_VALUE_HOLDS_UCHAR (value))
+        g_value_set_uchar (value, g_variant_get_byte (variant));
+      else if (G_VALUE_HOLDS_CHAR (value))
+        g_value_set_char (value, (gchar) g_variant_get_byte (variant));
+      else
+        return FALSE;
+      return TRUE;
+    }
+
+  else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_INT16)  ||
+           g_variant_is_of_type (variant, G_VARIANT_TYPE_INT32)  ||
+           g_variant_is_of_type (variant, G_VARIANT_TYPE_INT64)  ||
+           g_variant_is_of_type (variant, G_VARIANT_TYPE_DOUBLE))
+    return g_settings_get_mapping_numeric (value, variant);
+
+  else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_UINT16) ||
+           g_variant_is_of_type (variant, G_VARIANT_TYPE_UINT32) ||
+           g_variant_is_of_type (variant, G_VARIANT_TYPE_UINT64) ||
+           g_variant_is_of_type (variant, G_VARIANT_TYPE_HANDLE))
+    return g_settings_get_mapping_unsigned_numeric (value, variant);
+
+  else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_STRING)      ||
+           g_variant_is_of_type (variant, G_VARIANT_TYPE_OBJECT_PATH) ||
+           g_variant_is_of_type (variant, G_VARIANT_TYPE_SIGNATURE))
+    {
+      g_value_set_string (value, g_variant_get_string (variant, NULL));
+      return TRUE;
+    }
+
+  g_critical ("No GSettings bind handler for type \"%s\".",
+              g_variant_get_type_string (variant));
+
+  return FALSE;
+}
+
+gboolean
+g_settings_mapping_is_compatible (GType               gvalue_type,
+                                  const GVariantType *variant_type)
+{
+  gboolean ok = FALSE;
+
+  if (gvalue_type == G_TYPE_BOOLEAN)
+    ok = g_variant_type_equal (variant_type, G_VARIANT_TYPE_BOOLEAN);
+  else if (gvalue_type == G_TYPE_CHAR  ||
+           gvalue_type == G_TYPE_UCHAR)
+    ok = g_variant_type_equal (variant_type, G_VARIANT_TYPE_BYTE);
+  else if (gvalue_type == G_TYPE_INT    ||
+           gvalue_type == G_TYPE_UINT   ||
+           gvalue_type == G_TYPE_INT64  ||
+           gvalue_type == G_TYPE_UINT64 ||
+           gvalue_type == G_TYPE_DOUBLE)
+    ok = (g_variant_type_equal (variant_type, G_VARIANT_TYPE_INT16)  ||
+          g_variant_type_equal (variant_type, G_VARIANT_TYPE_UINT16) ||
+          g_variant_type_equal (variant_type, G_VARIANT_TYPE_INT32)  ||
+          g_variant_type_equal (variant_type, G_VARIANT_TYPE_UINT32) ||
+          g_variant_type_equal (variant_type, G_VARIANT_TYPE_INT64)  ||
+          g_variant_type_equal (variant_type, G_VARIANT_TYPE_UINT64) ||
+          g_variant_type_equal (variant_type, G_VARIANT_TYPE_HANDLE) ||
+          g_variant_type_equal (variant_type, G_VARIANT_TYPE_DOUBLE));
+  else if (gvalue_type == G_TYPE_STRING)
+    ok = (g_variant_type_equal (variant_type, G_VARIANT_TYPE_STRING)      ||
+          g_variant_type_equal (variant_type, G_VARIANT_TYPE_OBJECT_PATH) ||
+          g_variant_type_equal (variant_type, G_VARIANT_TYPE_SIGNATURE));
+
+  return ok;
+}
diff --git a/gio/gsettings-mapping.h b/gio/gsettings-mapping.h
new file mode 100644
index 0000000..18ce318
--- /dev/null
+++ b/gio/gsettings-mapping.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright © 2010 Novell, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Vincent Untz <vuntz gnome org>
+ */
+
+#ifndef __G_SETTINGS_MAPPING_H__
+#define __G_SETTINGS_MAPPING_H__
+
+#include <glib-object.h>
+
+G_GNUC_INTERNAL
+GVariant *              g_settings_set_mapping                          (const GValue       *value,
+                                                                         const GVariantType *expected_type,
+                                                                         gpointer            user_data);
+G_GNUC_INTERNAL
+gboolean                g_settings_get_mapping                          (GValue             *value,
+                                                                         GVariant           *variant,
+                                                                         gpointer            user_data);
+G_GNUC_INTERNAL
+gboolean                g_settings_mapping_is_compatible                (GType               gvalue_type,
+                                                                         const GVariantType *variant_type);
+
+#endif /* __G_SETTINGS_MAPPING_H__ */
diff --git a/gio/gsettings.c b/gio/gsettings.c
new file mode 100644
index 0000000..4d42838
--- /dev/null
+++ b/gio/gsettings.c
@@ -0,0 +1,1715 @@
+/*
+ * Copyright © 2009, 2010 Codethink Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ryan Lortie <desrt desrt ca>
+ */
+
+#include "config.h"
+#include <glib.h>
+#include <glibintl.h>
+#include <locale.h>
+
+#include "gsettings.h"
+
+#include "gdelayedsettingsbackend.h"
+#include "gsettingsbackendinternal.h"
+#include "gsettings-mapping.h"
+#include "gio-marshal.h"
+#include "gsettingsschema.h"
+
+#include <string.h>
+
+#include "gioalias.h"
+
+/**
+ * SECTION:gsettings
+ * @short_description: a high-level API for application settings
+ *
+ * The #GSettings class provides a convenient API for storing and retrieving
+ * application settings.
+ *
+ * When creating a GSettings instance, you have to specify a schema
+ * that describes the keys in your settings and their types and default
+ * values, as well as some other information.
+ *
+ * Normally, a schema has as fixed path that determines where the settings
+ * are stored in the conceptual global tree of settings. However, schemas
+ * can also be 'relocatable', i.e. not equipped with a fixed path. This is
+ * useful e.g. when the schema describes an 'account', and you want to be
+ * able to store a arbitrary number of accounts.
+ *
+ * Unlike other configuration systems (like GConf), GSettings does not
+ * restrict keys to basic types like strings and numbers. GSettings stores
+ * values as #GVariant, and allows any #GVariantType for keys. Key names
+ * are restricted to lowercase characters, numbers and '-'. Furthermore,
+ * the names must begin with a lowercase character, must not end
+ * with a '-', and must not contain consecutive dashes. Key names can
+ * be up to 32 characters long.
+ *
+ * Similar to GConf, the default values in GSettings schemas can be
+ * localized, but the localized values are stored in gettext catalogs
+ * and looked up with the domain that is specified in the gettext-domain
+ * attribute of the <tag>schemalist</tag> or <tag>schema</tag> elements
+ * and the category that is specified in the l10n attribute of the
+ * <tag>key</tag> element.
+ *
+ * GSettings uses schemas in a compact binary form that is created
+ * by the gschema-compile utility. The input is a schema description in
+ * an XML format that can be described by the following DTD:
+ * |[<![CDATA[
+ * <!ELEMENT schemalist (schema*) >
+ * <!ATTLIST schemalist gettext-domain #IMPLIED >
+ *
+ * <!ELEMENT schema (key|child)* >
+ * <!ATTLIST schema id             CDATA #REQUIRED
+ *                  path           CDATA #IMPLIED
+ *                  gettext-domain CDATA #IMPLIED >
+ *
+ * <!ELEMENT key (default|summary?|description?|range?|choices?) >
+ * <!-- name can only contain lowercase letters, numbers and '-' -->
+ * <!-- type must be a GVariant type string -->
+ * <!ATTLIST key name CDATA #REQUIRED
+ *               type CDATA #REQUIRED >
+ *
+ * <!-- the default value is specified a a serialized GVariant,
+ *      i.e. you have to include the quotes when specifying a string -->
+ * <!ELEMENT default (#PCDATA) >
+ * <!-- the presence of the l10n attribute marks a default value for
+ *      translation, its value is the gettext category to use -->
+ * <!-- if context is present, it specifies msgctxt to use -->
+ * <!ATTLIST default l10n (messages|time) #IMPLIED
+ *                   context CDATA #IMPLIED >
+ *
+ * <!ELEMENT summary (#PCDATA) >
+ * <!ELEMENT description (#PCDATA) >
+ *
+ * <!ELEMENT range (min,max)  >
+ * <!ELEMENT min (#PCDATA) >
+ * <!ELEMENT max (#PCDATA) >
+ *
+ * <!ELEMENT choices (choice+) >
+ * <!ELEMENT choice (alias?) >
+ * <!ATTLIST choice value CDATA #REQUIRED >
+ * <!ELEMENT choice (alias?) >
+ * <!ELEMENT alias EMPTY >
+ * <!ATTLIST alias value CDATA #REQUIRED >
+ *
+ * <!ELEMENT child EMPTY >
+ * <!ATTLIST child name  CDATA #REQUIRED
+ *                 schema CDATA #REQUIRED >
+ * ]]>
+ * ]|
+ *
+ * <refsect2>
+ *  <title>Binding</title>
+ *   <para>
+ *    A very convenient feature of GSettings lets you bind #GObject properties
+ *    directly to settings, using g_settings_bind(). Once a GObject property
+ *    has been bound to a setting, changes on either side are automatically
+ *    propagated to the other side. GSettings handles details like
+ *    mapping between GObject and GVariant types, and preventing infinite
+ *    cycles.
+ *   </para>
+ *   <para>
+ *    This makes it very easy to hook up a preferences dialog to the
+ *    underlying settings. To make this even more convenient, GSettings
+ *    looks for a boolean property with the name "sensitivity" and
+ *    automatically binds it to the writability of the bound setting.
+ *    If this 'magic' gets in the way, it can be suppressed with the
+ *    #G_SETTINGS_BIND_NO_SENSITIVITY flag.
+ *   </para>
+ *  </refsect2>
+ */
+
+struct _GSettingsPrivate
+{
+  GSettingsBackend *backend;
+  GSettingsSchema *schema;
+  gchar *schema_name;
+  gchar *context;
+  gchar *path;
+
+  GDelayedSettingsBackend *delayed;
+};
+
+enum
+{
+  PROP_0,
+  PROP_BACKEND,
+  PROP_SCHEMA,
+  PROP_CONTEXT,
+  PROP_PATH,
+  PROP_HAS_UNAPPLIED,
+};
+
+enum
+{
+  SIGNAL_WRITABLE_CHANGE_EVENT,
+  SIGNAL_WRITABLE_CHANGED,
+  SIGNAL_CHANGE_EVENT,
+  SIGNAL_CHANGED,
+  N_SIGNALS
+};
+
+static guint g_settings_signals[N_SIGNALS];
+
+G_DEFINE_TYPE (GSettings, g_settings, G_TYPE_OBJECT)
+
+static gboolean
+g_settings_real_change_event (GSettings    *settings,
+                              const GQuark *keys,
+                              gint          n_keys)
+{
+  gint i;
+
+  if (keys == NULL)
+    keys = g_settings_schema_list (settings->priv->schema, &n_keys);
+
+  for (i = 0; i < n_keys; i++)
+    g_signal_emit (settings, g_settings_signals[SIGNAL_CHANGED],
+                   keys[i], g_quark_to_string (keys[i]));
+
+  return FALSE;
+}
+
+static gboolean
+g_settings_real_writable_change_event (GSettings *settings,
+                                       GQuark     key)
+{
+  const GQuark *keys = &key;
+  gint n_keys = 1;
+  gint i;
+
+  if (key == 0)
+    keys = g_settings_schema_list (settings->priv->schema, &n_keys);
+
+  for (i = 0; i < n_keys; i++)
+    {
+      const gchar *string = g_quark_to_string (keys[i]);
+
+      g_signal_emit (settings, g_settings_signals[SIGNAL_WRITABLE_CHANGED],
+                     keys[i], string);
+      g_signal_emit (settings, g_settings_signals[SIGNAL_CHANGED],
+                     keys[i], string);
+    }
+
+  return FALSE;
+}
+
+static void
+settings_backend_changed (GSettingsBackend    *backend,
+                          const gchar         *key,
+                          gpointer             origin_tag,
+                          gpointer             user_data)
+{
+  GSettings *settings = G_SETTINGS (user_data);
+  gboolean ignore_this;
+  gint i;
+
+  g_assert (settings->priv->backend == backend);
+
+  for (i = 0; key[i] == settings->priv->path[i]; i++);
+
+  if (settings->priv->path[i] == '\0' &&
+      g_settings_schema_has_key (settings->priv->schema, key + i))
+    {
+      GQuark quark;
+
+      quark = g_quark_from_string (key + i);
+      g_signal_emit (settings, g_settings_signals[SIGNAL_CHANGE_EVENT],
+                     0, &quark, 1, &ignore_this);
+    }
+}
+
+static void
+settings_backend_path_changed (GSettingsBackend *backend,
+                               const gchar      *path,
+                               gpointer          origin_tag,
+                               gpointer          user_data)
+{
+  GSettings *settings = G_SETTINGS (user_data);
+  gboolean ignore_this;
+
+  g_assert (settings->priv->backend == backend);
+
+  if (g_str_has_prefix (settings->priv->path, path))
+    g_signal_emit (settings, g_settings_signals[SIGNAL_CHANGE_EVENT],
+                   0, NULL, 0, &ignore_this);
+}
+
+static void
+settings_backend_keys_changed (GSettingsBackend    *backend,
+                               const gchar         *path,
+                               const gchar * const *items,
+                               gpointer             origin_tag,
+                               gpointer             user_data)
+{
+  GSettings *settings = G_SETTINGS (user_data);
+  gboolean ignore_this;
+  gint i;
+
+  g_assert (settings->priv->backend == backend);
+
+  for (i = 0; settings->priv->path[i] &&
+              settings->priv->path[i] == path[i]; i++);
+
+  if (path[i] == '\0')
+    {
+      GQuark quarks[256];
+      gint j, l = 0;
+
+      for (j = 0; items[j]; j++)
+         {
+           const gchar *item = items[j];
+           gint k;
+
+           for (k = 0; item[k] == settings->priv->path[i + k]; k++);
+
+           if (settings->priv->path[i + k] == '\0' &&
+               g_settings_schema_has_key (settings->priv->schema, item + k))
+             quarks[l++] = g_quark_from_string (item + k);
+
+           /* "256 quarks ought to be enough for anybody!"
+            * If this bites you, I'm sorry.  Please file a bug.
+            */
+           g_assert (l < 256);
+         }
+
+      if (l > 0)
+        g_signal_emit (settings, g_settings_signals[SIGNAL_CHANGE_EVENT],
+                       0, quarks, l, &ignore_this);
+    }
+}
+
+static void
+settings_backend_writable_changed (GSettingsBackend *backend,
+                                   const gchar      *key,
+                                   gpointer          user_data)
+{
+  GSettings *settings = G_SETTINGS (user_data);
+  gboolean ignore_this;
+  gint i;
+
+  g_assert (settings->priv->backend == backend);
+
+  for (i = 0; key[i] == settings->priv->path[i]; i++);
+
+  if (settings->priv->path[i] == '\0' &&
+      g_settings_schema_has_key (settings->priv->schema, key + i))
+    g_signal_emit (settings, g_settings_signals[SIGNAL_WRITABLE_CHANGE_EVENT],
+                   0, g_quark_from_string (key + i), &ignore_this);
+}
+
+static void
+settings_backend_path_writable_changed (GSettingsBackend *backend,
+                                        const gchar      *path,
+                                        gpointer          user_data)
+{
+  GSettings *settings = G_SETTINGS (user_data);
+  gboolean ignore_this;
+
+  g_assert (settings->priv->backend == backend);
+
+  if (g_str_has_prefix (settings->priv->path, path))
+    g_signal_emit (settings, g_settings_signals[SIGNAL_WRITABLE_CHANGE_EVENT],
+                   0, (GQuark) 0, &ignore_this);
+}
+
+static void
+g_settings_constructed (GObject *object)
+{
+  GSettings *settings = G_SETTINGS (object);
+  const gchar *schema_path;
+
+  settings->priv->schema = g_settings_schema_new (settings->priv->schema_name);
+  schema_path = g_settings_schema_get_path (settings->priv->schema);
+
+  if (settings->priv->path && schema_path && strcmp (settings->priv->path, schema_path) != 0)
+    g_error ("settings object created with schema '%s' and path '%s', but "
+             "path '%s' is specified by schema",
+             settings->priv->schema_name, settings->priv->path, schema_path);
+
+  if (settings->priv->path == NULL)
+    {
+      if (schema_path == NULL)
+        g_error ("attempting to create schema '%s' without a path",
+                 settings->priv->schema_name);
+
+      settings->priv->path = g_strdup (schema_path);
+    }
+
+  settings->priv->backend = g_settings_backend_get_with_context (settings->priv->context);
+  g_settings_backend_watch (settings->priv->backend,
+                            settings_backend_changed,
+                            settings_backend_path_changed,
+                            settings_backend_keys_changed,
+                            settings_backend_writable_changed,
+                            settings_backend_path_writable_changed,
+                            settings);
+  g_settings_backend_subscribe (settings->priv->backend,
+                                settings->priv->path);
+}
+
+static void
+g_settings_init (GSettings *settings)
+{
+  settings->priv = G_TYPE_INSTANCE_GET_PRIVATE (settings,
+                                                G_TYPE_SETTINGS,
+                                                GSettingsPrivate);
+}
+
+/**
+ * g_settings_delay:
+ * @settings: a #GSettings object
+ *
+ * Changes the #GSettings object into 'delay-apply' mode. In this
+ * mode, changes to @settings are not immediately propagated to the
+ * backend, but kept locally until g_settings_apply() is called.
+ *
+ * Since: 2.26
+ */
+void
+g_settings_delay (GSettings *settings)
+{
+  if (settings->priv->delayed)
+    return;
+
+  settings->priv->delayed =
+    g_delayed_settings_backend_new (settings->priv->backend, settings);
+  g_settings_backend_unwatch (settings->priv->backend, settings);
+  g_object_unref (settings->priv->backend);
+
+  settings->priv->backend = G_SETTINGS_BACKEND (settings->priv->delayed);
+  g_settings_backend_watch (settings->priv->backend,
+                            settings_backend_changed,
+                            settings_backend_path_changed,
+                            settings_backend_keys_changed,
+                            settings_backend_writable_changed,
+                            settings_backend_path_writable_changed,
+                            settings);
+}
+
+/**
+ * g_settings_apply:
+ * @settings: a #GSettings instance
+ *
+ * Applies any changes that have been made to the settings.  This
+ * function does nothing unless @settings is in 'delay-apply' mode;
+ * see g_settings_set_delay_apply().  In the normal case settings are
+ * always applied immediately.
+ **/
+void
+g_settings_apply (GSettings *settings)
+{
+  if (settings->priv->delayed)
+    {
+      GDelayedSettingsBackend *delayed;
+
+      delayed = G_DELAYED_SETTINGS_BACKEND (settings->priv->backend);
+      g_delayed_settings_backend_apply (delayed);
+    }
+}
+
+/**
+ * g_settings_revert:
+ * @settings: a #GSettings instance
+ *
+ * Reverts all non-applied changes to the settings.  This function
+ * does nothing unless @settings is in 'delay-apply' mode; see
+ * g_settings_set_delay_apply().  In the normal case settings are
+ * always applied immediately.
+ *
+ * Change notifications will be emitted for affected keys.
+ **/
+void
+g_settings_revert (GSettings *settings)
+{
+  if (settings->priv->delayed)
+    {
+      GDelayedSettingsBackend *delayed;
+
+      delayed = G_DELAYED_SETTINGS_BACKEND (settings->priv->backend);
+      g_delayed_settings_backend_revert (delayed);
+    }
+}
+
+static void
+g_settings_set_property (GObject      *object,
+                         guint         prop_id,
+                         const GValue *value,
+                         GParamSpec   *pspec)
+{
+  GSettings *settings = G_SETTINGS (object);
+
+  switch (prop_id)
+    {
+    case PROP_SCHEMA:
+      g_assert (settings->priv->schema_name == NULL);
+      settings->priv->schema_name = g_value_dup_string (value);
+      break;
+
+    case PROP_PATH:
+      settings->priv->path = g_value_dup_string (value);
+      break;
+
+    case PROP_CONTEXT:
+      settings->priv->context = g_value_dup_string (value);
+      break;
+
+    default:
+      g_assert_not_reached ();
+    }
+}
+
+/**
+ * g_settings_get_has_unapplied:
+ * @settings: a #GSettings object
+ * @returns: %TRUE if @settings has unapplied changes
+ *
+ * Returns whether the #GSettings object has any unapplied
+ * changes.  This can only be the case if it is in 'delayed-apply' mode.
+ *
+ * Since: 2.26
+ */
+gboolean
+g_settings_get_has_unapplied (GSettings *settings)
+{
+  return settings->priv->delayed &&
+         g_delayed_settings_backend_get_has_unapplied (
+           G_DELAYED_SETTINGS_BACKEND (settings->priv->backend));
+}
+
+static void
+g_settings_get_property (GObject    *object,
+                         guint       prop_id,
+                         GValue     *value,
+                         GParamSpec *pspec)
+{
+  GSettings *settings = G_SETTINGS (object);
+
+  switch (prop_id)
+    {
+     case PROP_SCHEMA:
+      g_value_set_object (value, settings->priv->schema);
+      break;
+
+     case PROP_HAS_UNAPPLIED:
+      g_value_set_boolean (value, g_settings_get_has_unapplied (settings));
+      break;
+
+     default:
+      g_assert_not_reached ();
+    }
+}
+
+static void
+g_settings_finalize (GObject *object)
+{
+  GSettings *settings = G_SETTINGS (object);
+
+  g_settings_backend_unwatch (settings->priv->backend, settings);
+  g_settings_backend_unsubscribe (settings->priv->backend,
+                                  settings->priv->path);
+  g_object_unref (settings->priv->backend);
+  g_object_unref (settings->priv->schema);
+  g_free (settings->priv->schema_name);
+  g_free (settings->priv->path);
+}
+
+static void
+g_settings_class_init (GSettingsClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+  class->writable_change_event = g_settings_real_writable_change_event;
+  class->change_event = g_settings_real_change_event;
+
+  object_class->set_property = g_settings_set_property;
+  object_class->get_property = g_settings_get_property;
+  object_class->constructed = g_settings_constructed;
+  object_class->finalize = g_settings_finalize;
+
+  g_type_class_add_private (object_class, sizeof (GSettingsPrivate));
+
+  /**
+   * GSettings::changed:
+   * @settings: the object on which the signal was emitted
+   *
+   * The "changed" signal is emitted when a key has potentially changed.
+   * You should call one of the g_settings_get() calls to check the new
+   * value.
+   *
+   * This signal supports detailed connections.  You can connect to the
+   * detailed signal "changed::x" in order to only receive callbacks
+   * when key "x" changes.
+   */
+  g_settings_signals[SIGNAL_CHANGED] =
+    g_signal_new ("changed", G_TYPE_SETTINGS,
+                  G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
+                  G_STRUCT_OFFSET (GSettingsClass, changed),
+                  NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE,
+                  1, G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
+
+  /**
+   * GSettings::change-event:
+   * @settings: the object on which the signal was emitted
+   * @keys: an array of #GQuark<!-- -->s for the changed keys, or %NULL
+   * @n_keys: the length of the @keys array, or 0
+   * @returns: %TRUE to stop other handlers from being invoked for the
+   *           event. FALSE to propagate the event further.
+   *
+   * The "change-event" signal is emitted once per change event that
+   * affects this settings object.  You should connect to this signal
+   * only if you are interested in viewing groups of changes before they
+   * are split out into multiple emissions of the "changed" signal.
+   * For most use cases it is more appropriate to use the "changed" signal.
+   *
+   * In the event that the change event applies to one or more specified
+   * keys, @keys will be an array of #GQuark of length @n_keys.  In the
+   * event that the change event applies to the #GSettings object as a
+   * whole (ie: potentially every key has been changed) then @keys will
+   * be %NULL and @n_keys will be 0.
+   *
+   * The default handler for this signal invokes the "changed" signal
+   * for each affected key.  If any other connected handler returns
+   * %TRUE then this default functionality will be supressed.
+   */
+  g_settings_signals[SIGNAL_CHANGE_EVENT] =
+    g_signal_new ("change-event", G_TYPE_SETTINGS,
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (GSettingsClass, change_event),
+                  g_signal_accumulator_true_handled, NULL,
+                  _gio_marshal_BOOL__POINTER_INT,
+                  G_TYPE_BOOLEAN, 2, G_TYPE_POINTER, G_TYPE_INT);
+
+  /**
+   * GSettings::writable-changed:
+   * @settings: the object on which the signal was emitted
+   * @key: the key
+   *
+   * The "writable-changed" signal is emitted when the writability of a
+   * key has potentially changed.  You should call
+   * g_settings_is_writable() in order to determine the new status.
+   *
+   * This signal supports detailed connections.  You can connect to the
+   * detailed signal "writable-changed::x" in order to only receive
+   * callbacks when the writability of "x" changes.
+   */
+  g_settings_signals[SIGNAL_WRITABLE_CHANGED] =
+    g_signal_new ("writable-changed", G_TYPE_SETTINGS,
+                  G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
+                  G_STRUCT_OFFSET (GSettingsClass, changed),
+                  NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE,
+                  1, G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
+
+  /**
+   * GSettings::writable-change-event:
+   * @settings: the object on which the signal was emitted
+   * @key: the quark of the key, or 0
+   * @returns: %TRUE to stop other handlers from being invoked for the
+   *           event. FALSE to propagate the event further.
+   *
+   * The "writable-change-event" signal is emitted once per writability
+   * change event that affects this settings object.  You should connect
+   * to this signal if you are interested in viewing groups of changes
+   * before they are split out into multiple emissions of the
+   * "writable-changed" signal.  For most use cases it is more
+   * appropriate to use the "writable-changed" signal.
+   *
+   * In the event that the writability change applies only to a single
+   * key, @key will be set to the #GQuark for that key.  In the event
+   * that the writability change affects the entire settings object,
+   * @key will be 0.
+   *
+   * The default handler for this signal invokes the "writable-changed"
+   * and "changed" signals for each affected key.  This is done because
+   * changes in writability might also imply changes in value (if for
+   * example, a new mandatory setting is introduced).  If any other
+   * connected handler returns %TRUE then this default functionality
+   * will be supressed.
+   */
+  g_settings_signals[SIGNAL_WRITABLE_CHANGE_EVENT] =
+    g_signal_new ("writable-change-event", G_TYPE_SETTINGS,
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (GSettingsClass, writable_change_event),
+                  g_signal_accumulator_true_handled, NULL,
+                  _gio_marshal_BOOLEAN__UINT, G_TYPE_BOOLEAN, 1, G_TYPE_UINT);
+
+  /**
+   * GSettings:context:
+   *
+   * The name of the context that the settings are stored in.
+   */
+  g_object_class_install_property (object_class, PROP_CONTEXT,
+    g_param_spec_string ("context",
+                         P_("Context name"),
+                         P_("The name of the context for this settings object"),
+                         "", G_PARAM_CONSTRUCT_ONLY |
+                         G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  /**
+   * GSettings:schema:
+   *
+   * The name of the schema that describes the types of keys
+   * for this #GSettings object.
+   */
+  g_object_class_install_property (object_class, PROP_SCHEMA,
+    g_param_spec_string ("schema",
+                         P_("Schema name"),
+                         P_("The name of the schema for this settings object"),
+                         NULL,
+                         G_PARAM_CONSTRUCT_ONLY |
+                         G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+   /**
+    * GSettings:path:
+    *
+    * The path within the backend where the settings are stored.
+    */
+   g_object_class_install_property (object_class, PROP_PATH,
+     g_param_spec_string ("path",
+                          P_("Base path"),
+                          P_("The path within the backend where the settings are"),
+                          NULL,
+                          G_PARAM_CONSTRUCT_ONLY |
+                          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+   /**
+    * GSettings:has-unapplied:
+    *
+    * If this property is %TRUE, the #GSettings object has outstanding
+    * changes that will be applied when g_settings_apply() is called.
+    */
+   g_object_class_install_property (object_class, PROP_HAS_UNAPPLIED,
+     g_param_spec_boolean ("has-unapplied",
+                           P_("Has unapplied changes"),
+                           P_("TRUE if there are outstanding changes to apply()"),
+                           FALSE,
+                           G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+}
+
+/**
+ * g_settings_get_value:
+ * @settings: a #GSettings object
+ * @key: the key to get the value for
+ * @returns: a new #GVariant
+ *
+ * Gets the value that is stored in @settings for @key.
+ *
+ * It is a programmer error to give a @key that isn't valid for
+ * @settings.
+ *
+ * Since: 2.26
+ */
+GVariant *
+g_settings_get_value (GSettings   *settings,
+                      const gchar *key)
+{
+  const gchar *unparsed = NULL;
+  GVariant *value, *options;
+  const GVariantType *type;
+  gchar lc_char = '\0';
+  GVariant *sval;
+  gchar *path;
+
+  sval = g_settings_schema_get_value (settings->priv->schema, key, &options);
+
+  if G_UNLIKELY (sval == NULL)
+    g_error ("schema '%s' does not contain a key named '%s'",
+             settings->priv->schema_name, key);
+
+  path = g_strconcat (settings->priv->path, key, NULL);
+  type = g_variant_get_type (sval);
+  value = g_settings_backend_read (settings->priv->backend, path, type);
+  g_free (path);
+
+  if (options != NULL)
+    {
+      GVariantIter iter;
+      const gchar *key;
+      GVariant *value;
+
+      g_variant_iter_init (&iter, options);
+      while (g_variant_iter_loop (&iter, "{&sv}", &key, &value))
+        {
+          if (strcmp (key, "l10n") == 0)
+            g_variant_get (value, "(y&s)", &lc_char, &unparsed);
+          else
+            g_warning ("unknown schema extension '%s'", key);
+        }
+    }
+
+  if (value && !g_variant_is_of_type (value, type))
+    {
+      g_variant_unref (value);
+      value = NULL;
+    }
+
+  if (value == NULL && lc_char != '\0')
+  /* we will need to translate the schema default value */
+    {
+      const gchar *translated;
+      GError *error = NULL;
+      const gchar *domain;
+      gint lc_category;
+
+      domain = g_settings_schema_get_gettext_domain (settings->priv->schema);
+
+      if (lc_char == 't')
+        lc_category = LC_TIME;
+      else
+        lc_category = LC_MESSAGES;
+
+      translated = dcgettext (domain, unparsed, lc_category);
+
+      if (translated != unparsed)
+        /* it was translated, so we need to re-parse it */
+        {
+          value = g_variant_parse (g_variant_get_type (sval),
+                                   translated, NULL, NULL, &error);
+
+          if (value == NULL)
+            {
+              g_warning ("Failed to parse translated string `%s' for "
+                         "key `%s' in schema `%s': %s", unparsed, key,
+                         settings->priv->schema_name, error->message);
+              g_warning ("Using untranslated default instead.");
+              g_error_free (error);
+            }
+        }
+    }
+
+  if (value == NULL)
+    /* either translation failed or there was none to do.
+     * use the pre-compiled default.
+     */
+    value = g_variant_ref (sval);
+
+  g_variant_unref (sval);
+
+  return value;
+}
+
+/**
+ * g_settings_set_value:
+ * @settings: a #GSettings object
+ * @key: the name of the key to set
+ * @value: a #GVariant of the correct type
+ * @returns: %TRUE if setting the key succeeded,
+ *     %FALSE if the key was not writable
+ *
+ * Sets @key in @settings to @value.
+ *
+ * It is a programmer error to give a @key that isn't valid for
+ * @settings.  It is a programmer error to give a @value of the
+ * incorrect type.
+ *
+ * If @value is floating then this function consumes the reference.
+ *
+ * Since: 2.26
+ **/
+gboolean
+g_settings_set_value (GSettings   *settings,
+                      const gchar *key,
+                      GVariant    *value)
+{
+  gboolean correct_type;
+  gboolean result;
+  GVariant *sval;
+  gchar *path;
+
+  sval = g_settings_schema_get_value (settings->priv->schema, key, NULL);
+  correct_type = g_variant_is_of_type (value, g_variant_get_type (sval));
+  g_variant_unref (sval);
+
+  g_return_val_if_fail (correct_type, FALSE);
+
+  path = g_strconcat (settings->priv->path, key, NULL);
+  result = g_settings_backend_write (settings->priv->backend,
+                                     path, value, NULL);
+  g_free (path);
+
+  return result;
+}
+
+/**
+ * g_settings_get:
+ * @settings: a #GSettings object
+ * @key: the key to get the value for
+ * @format: a #GVariant format string
+ * @...: arguments as per @format
+ *
+ * Gets the value that is stored at @key in @settings.
+ *
+ * A convenience function that combines g_settings_get_value() with
+ * g_variant_get().
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or a @format_string that doesn't match the type of @key according
+ * to the schema of @settings.
+ *
+ * Since: 2.26
+ */
+void
+g_settings_get (GSettings   *settings,
+                const gchar *key,
+                const gchar *format,
+                ...)
+{
+  GVariant *value;
+  va_list ap;
+
+  value = g_settings_get_value (settings, key);
+
+  va_start (ap, format);
+  g_variant_get_va (value, format, NULL, &ap);
+  va_end (ap);
+
+  g_variant_unref (value);
+}
+
+/**
+ * g_settings_set:
+ * @settings: a #GSettings object
+ * @key: the name of the key to set
+ * @format: a #GVariant format string
+ * @...: arguments as per @format
+ * @returns: %TRUE if setting the key succeeded,
+ *     %FALSE if the key was not writable
+ *
+ * Sets @key in @settings to @value.
+ *
+ * A convenience function that combines g_settings_set_value() with
+ * g_variant_new().
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or a @format that doesn't match the type of @key according
+ * to the schema of @settings.
+ *
+ * Since: 2.26
+ */
+gboolean
+g_settings_set (GSettings   *settings,
+                const gchar *key,
+                const gchar *format,
+                ...)
+{
+  GVariant *value;
+  va_list ap;
+
+  va_start (ap, format);
+  value = g_variant_new_va (format, NULL, &ap);
+  va_end (ap);
+
+  return g_settings_set_value (settings, key, value);
+}
+
+/**
+ * g_settings_is_writable:
+ * @settings: a #GSettings object
+ * @name: the name of a key
+ * @returns: %TRUE if the key @name is writable
+ *
+ * Finds out if a key can be written or not
+ *
+ * Since: 2.26
+ */
+gboolean
+g_settings_is_writable (GSettings   *settings,
+                        const gchar *name)
+{
+  gboolean writable;
+  gchar *path;
+
+  path = g_strconcat (settings->priv->path, name, NULL);
+  writable = g_settings_backend_get_writable (settings->priv->backend, path);
+  g_free (path);
+
+  return writable;
+}
+
+/**
+ * g_settings_get_child:
+ * @settings: a #GSettings object
+ * @name: the name of the 'child' schema
+ * @returns: a 'child' settings object
+ *
+ * Creates a 'child' settings object which has a base path of
+ * <replaceable>base-path</replaceable>/@name", where
+ * <replaceable>base-path</replaceable> is the base path of @settings.
+ *
+ * The schema for the child settings object must have been declared
+ * in the schema of @settings using a <tag>child</tag> element.
+ *
+ * Since: 2.26
+ */
+GSettings *
+g_settings_get_child (GSettings   *settings,
+                      const gchar *name)
+{
+  GVariant *child_schema;
+  gchar *child_path;
+  gchar *child_name;
+  GSettings *child;
+
+  child_name = g_strconcat (name, "/", NULL);
+  child_schema = g_settings_schema_get_value (settings->priv->schema,
+                                              child_name, NULL);
+  if (child_schema == NULL ||
+      !g_variant_is_of_type (child_schema, G_VARIANT_TYPE_STRING))
+    g_error ("Schema '%s' has no child '%s'",
+             settings->priv->schema_name, name);
+
+  child_path = g_strconcat (settings->priv->path, child_name, NULL);
+  child = g_object_new (G_TYPE_SETTINGS,
+                        "schema", g_variant_get_string (child_schema, NULL),
+                        "path", child_path,
+                        NULL);
+  g_variant_unref (child_schema);
+  g_free (child_path);
+  g_free (child_name);
+
+  return child;
+}
+
+/**
+ * g_settings_new:
+ * @schema: the name of the schema
+ * @returns: a new #GSettings object
+ *
+ * Creates a new #GSettings object with a given schema.
+ *
+ * Since: 2.26
+ */
+GSettings *
+g_settings_new (const gchar *schema)
+{
+  return g_object_new (G_TYPE_SETTINGS,
+                       "schema", schema,
+                       NULL);
+}
+
+/**
+ * g_settings_new_with_path:
+ * @schema: the name of the schema
+ * @path: the path to use
+ * @returns: a new #GSettings object
+ *
+ * Creates a new #GSettings object with a given schema and path.
+ *
+ * You only need to do this if you want to directly create a settings
+ * object with a schema that doesn't have a specified path of its own.
+ * That's quite rare.
+ *
+ * It is a programmer error to call this function for a schema that
+ * has an explicitly specified path.
+ *
+ * Since: 2.26
+ */
+GSettings *
+g_settings_new_with_path (const gchar *schema,
+                          const gchar *path)
+{
+  return g_object_new (G_TYPE_SETTINGS,
+                       "schema", schema,
+                       "path", path,
+                       NULL);
+}
+
+/**
+ * g_settings_new_with_context:
+ * @schema: the name of the schema
+ * @context: the context to use
+ * @returns: a new #GSettings object
+ *
+ * Creates a new #GSettings object with a given schema and context.
+ *
+ * Creating settings objects with a context allow accessing settings
+ * from a database other than the usual one.  For example, it may make
+ * sense to specify "defaults" in order to get a settings object that
+ * modifies the system default settings instead of the settings for this
+ * user.
+ *
+ * It is a programmer error to call this function for an unsupported
+ * context.  Use g_settings_supports_context() to determine if a context
+ * is supported if you are unsure.
+ *
+ * Since: 2.26
+ */
+GSettings *
+g_settings_new_with_context (const gchar *schema,
+                             const gchar *context)
+{
+  return g_object_new (G_TYPE_SETTINGS,
+                       "schema", schema,
+                       "context", context,
+                       NULL);
+}
+
+/**
+ * g_settings_new_with_context_and_path:
+ * @schema: the name of the schema
+ * @path: the path to use
+ * @returns: a new #GSettings object
+ *
+ * Creates a new #GSettings object with a given schema, context and
+ * path.
+ *
+ * This is a mix of g_settings_new_with_context() and
+ * g_settings_new_with_path().
+ *
+ * Since: 2.26
+ */
+GSettings *
+g_settings_new_with_context_and_path (const gchar *schema,
+                                      const gchar *context,
+                                      const gchar *path)
+{
+  return g_object_new (G_TYPE_SETTINGS,
+                       "schema", schema,
+                        "context", context,
+                        "path", path,
+                        NULL);
+}
+
+typedef struct
+{
+  GSettings *settings;
+  GObject *object;
+
+  GSettingsBindGetMapping get_mapping;
+  GSettingsBindSetMapping set_mapping;
+  gpointer user_data;
+  GDestroyNotify destroy;
+
+  guint writable_handler_id;
+  guint property_handler_id;
+  const GParamSpec *property;
+  guint key_handler_id;
+  GVariantType *type;
+  const gchar *key;
+
+  /* prevent recursion */
+  gboolean running;
+} GSettingsBinding;
+
+static void
+g_settings_binding_free (gpointer data)
+{
+  GSettingsBinding *binding = data;
+
+  g_assert (!binding->running);
+
+  if (binding->writable_handler_id)
+    g_signal_handler_disconnect (binding->settings,
+                                 binding->writable_handler_id);
+
+  if (binding->key_handler_id)
+    g_signal_handler_disconnect (binding->settings,
+                                 binding->key_handler_id);
+
+  if (g_signal_handler_is_connected (binding->object,
+                                     binding->property_handler_id))
+  g_signal_handler_disconnect (binding->object,
+                               binding->property_handler_id);
+
+  g_variant_type_free (binding->type);
+  g_object_unref (binding->settings);
+
+  if (binding->destroy)
+    binding->destroy (binding->user_data);
+
+  g_slice_free (GSettingsBinding, binding);
+}
+
+static GQuark
+g_settings_binding_quark (const char *property)
+{
+  GQuark quark;
+  gchar *tmp;
+
+  tmp = g_strdup_printf ("gsettingsbinding-%s", property);
+  quark = g_quark_from_string (tmp);
+  g_free (tmp);
+
+  return quark;
+}
+
+static void
+g_settings_binding_key_changed (GSettings   *settings,
+                                const gchar *key,
+                                gpointer     user_data)
+{
+  GSettingsBinding *binding = user_data;
+  GValue value = {  };
+  GVariant *variant;
+
+  g_assert (settings == binding->settings);
+  g_assert (key == binding->key);
+
+  if (binding->running)
+    return;
+
+  binding->running = TRUE;
+
+  g_value_init (&value, binding->property->value_type);
+  variant = g_settings_get_value (settings, key);
+  if (binding->get_mapping (&value, variant, binding->user_data))
+    g_object_set_property (binding->object,
+                           binding->property->name,
+                           &value);
+  g_value_unset (&value);
+
+  binding->running = FALSE;
+}
+
+static void
+g_settings_binding_writable_changed (GSettings   *settings,
+                                     const gchar *key,
+                                     gpointer     user_data)
+{
+  GSettingsBinding *binding = user_data;
+  gboolean writable;
+
+  g_assert (settings == binding->settings);
+  g_assert (key == binding->key);
+
+  writable = g_settings_is_writable (settings, key);
+  g_object_set (binding->object, "sensitive", writable, NULL);
+}
+
+static void
+g_settings_binding_property_changed (GObject          *object,
+                                     const GParamSpec *pspec,
+                                     gpointer          user_data)
+{
+  GSettingsBinding *binding = user_data;
+  GValue value = {  };
+  GVariant *variant;
+
+  g_assert (object == binding->object);
+  g_assert (pspec == binding->property);
+
+  if (binding->running)
+    return;
+
+  binding->running = TRUE;
+
+  g_value_init (&value, pspec->value_type);
+  g_object_get_property (object, pspec->name, &value);
+  if ((variant = binding->set_mapping (&value, binding->type,
+                                       binding->user_data)))
+    {
+      g_settings_set_value (binding->settings,
+                            binding->key,
+                            variant);
+      g_variant_unref (variant);
+    }
+  g_value_unset (&value);
+
+  binding->running = FALSE;
+}
+
+/**
+ * g_settings_bind:
+ * @settings: a #GSettings object
+ * @key: the key to bind
+ * @object: a #GObject
+ * @property: the name of the property to bind
+ * @flags: flags for the binding
+ *
+ * Create a binding between the @key in the @settings object
+ * and the property @property of @object.
+ *
+ * The binding uses the default GIO mapping functions to map
+ * between the settings and property values. These functions
+ * handle booleans, numeric types and string types in a
+ * straightforward way. Use g_settings_bind_with_mapping()
+ * if you need a custom mapping, or map between types that
+ * are not supported by the default mapping functions.
+ *
+ * Note that the lifecycle of the binding is tied to the object,
+ * and that you can have only one binding per object property.
+ * If you bind the same property twice on the same object, the second
+ * binding overrides the first one.
+ *
+ * Since: 2.26
+ */
+void
+g_settings_bind (GSettings          *settings,
+                 const gchar        *key,
+                 gpointer            object,
+                 const gchar        *property,
+                 GSettingsBindFlags  flags)
+{
+  g_settings_bind_with_mapping (settings, key, object, property,
+                                flags, NULL, NULL, NULL, NULL);
+}
+
+/**
+ * g_settings_bind_with_mapping:
+ * @settings: a #GSettings object
+ * @key: the key to bind
+ * @object: a #GObject
+ * @property: the name of the property to bind
+ * @flags: flags for the binding
+ * @get_mapping: a function that gets called to convert values
+ *     from @settings to @object, or %NULL to use the default GIO mapping
+ * @set_mapping: a function that gets called to convert values
+ *     from @object to @settings, or %NULL to use the default GIO mapping
+ * @user_data: data that gets passed to @get_mapping and @set_mapping
+ * @destroy: #GDestroyNotify function for @user_data
+ *
+ * Create a binding between the @key in the @settings object
+ * and the property @property of @object.
+ *
+ * The binding uses the provided mapping functions to map between
+ * settings and property values.
+ *
+ * Note that the lifecycle of the binding is tied to the object,
+ * and that you can have only one binding per object property.
+ * If you bind the same property twice on the same object, the second
+ * binding overrides the first one.
+ *
+ * Since: 2.26
+ */
+void
+g_settings_bind_with_mapping (GSettings               *settings,
+                              const gchar             *key,
+                              gpointer                 object,
+                              const gchar             *property,
+                              GSettingsBindFlags       flags,
+                              GSettingsBindGetMapping  get_mapping,
+                              GSettingsBindSetMapping  set_mapping,
+                              gpointer                 user_data,
+                              GDestroyNotify           destroy)
+{
+  GSettingsBinding *binding;
+  GObjectClass *objectclass;
+  gboolean bind_sensitive;
+  gchar *detailed_signal;
+  GQuark binding_quark;
+
+  objectclass = G_OBJECT_GET_CLASS (object);
+
+  binding = g_slice_new0 (GSettingsBinding);
+  binding->settings = g_object_ref (settings);
+  binding->object = object;
+  binding->key = g_intern_string (key);
+  binding->property = g_object_class_find_property (objectclass, property);
+  binding->user_data = user_data;
+  binding->destroy = destroy;
+  binding->get_mapping = get_mapping ? get_mapping : g_settings_get_mapping;
+  binding->set_mapping = set_mapping ? set_mapping : g_settings_set_mapping;
+
+  if (!(flags & (G_SETTINGS_BIND_GET | G_SETTINGS_BIND_SET)))
+    flags |= G_SETTINGS_BIND_GET | G_SETTINGS_BIND_SET;
+
+  if (binding->property == NULL)
+    {
+      g_critical ("g_settings_bind: no property '%s' on class '%s'",
+                  property, G_OBJECT_TYPE_NAME (object));
+      return;
+    }
+
+  {
+    GVariant *value;
+
+    value = g_settings_schema_get_value (settings->priv->schema, key, NULL);
+    binding->type = g_variant_type_copy (g_variant_get_type (value));
+    if (value)
+      g_variant_unref (value);
+  }
+
+  if (binding->type == NULL)
+    {
+      g_critical ("g_settings_bind: no key '%s' on schema '%s'",
+                  key, settings->priv->schema_name);
+      return;
+    }
+
+  if (((get_mapping == NULL && (flags & G_SETTINGS_BIND_GET)) ||
+       (set_mapping == NULL && (flags & G_SETTINGS_BIND_SET))) &&
+      !g_settings_mapping_is_compatible (binding->property->value_type,
+                                         binding->type))
+    {
+      g_critical ("g_settings_bind: property '%s' on class '%s' has type"
+                  "'%s' which is not compatible with type '%s' of key '%s'"
+                  "on schema '%s'", property, G_OBJECT_TYPE_NAME (object),
+                  g_type_name (binding->property->value_type),
+                  g_variant_type_dup_string (binding->type), key,
+                  settings->priv->schema_name);
+      return;
+    }
+
+  if ((flags & G_SETTINGS_BIND_SET) &&
+      (~flags & G_SETTINGS_BIND_NO_SENSITIVITY))
+    {
+      GParamSpec *sensitive;
+
+      sensitive = g_object_class_find_property (objectclass, "sensitive");
+      bind_sensitive = sensitive && sensitive->value_type == G_TYPE_BOOLEAN;
+    }
+  else
+    bind_sensitive = FALSE;
+
+  if (flags & G_SETTINGS_BIND_SET)
+    {
+      detailed_signal = g_strdup_printf ("notify::%s", property);
+      binding->property_handler_id =
+        g_signal_connect (object, detailed_signal,
+                          G_CALLBACK (g_settings_binding_property_changed),
+                          binding);
+      g_free (detailed_signal);
+
+      if (~flags & G_SETTINGS_BIND_GET)
+        g_settings_binding_property_changed (object,
+                                             binding->property,
+                                             binding);
+    }
+
+  if (flags & G_SETTINGS_BIND_GET)
+    {
+      if (~flags & G_SETTINGS_BIND_GET_NO_CHANGES)
+        {
+          detailed_signal = g_strdup_printf ("changed::%s", key);
+          binding->key_handler_id =
+            g_signal_connect (settings, detailed_signal,
+                              G_CALLBACK (g_settings_binding_key_changed),
+                              binding);
+          g_free (detailed_signal);
+        }
+
+      g_settings_binding_key_changed (settings, binding->key, binding);
+    }
+
+  if (bind_sensitive)
+    {
+      detailed_signal = g_strdup_printf ("writable-changed::%s", key);
+      binding->writable_handler_id =
+        g_signal_connect (settings, detailed_signal,
+                          G_CALLBACK (g_settings_binding_writable_changed),
+                          binding);
+      g_free (detailed_signal);
+
+      g_settings_binding_writable_changed (settings, binding->key, binding);
+    }
+
+  binding_quark = g_settings_binding_quark (property);
+  g_object_set_qdata_full (object, binding_quark,
+                           binding, g_settings_binding_free);
+}
+
+/**
+ * g_settings_unbind:
+ * @object: the object
+ * @property: the property whose binding is removed
+ *
+ * Removes an existing binding for @property on @object.
+ *
+ * Note that bindings are automatically removed when the
+ * object is finalized, so it is rarely necessary to call this
+ * function.
+ *
+ * Since: 2.26
+ */
+void
+g_settings_unbind (gpointer     object,
+                   const gchar *property)
+{
+  GQuark binding_quark;
+
+  binding_quark = g_settings_binding_quark (property);
+  g_object_set_qdata (object, binding_quark, NULL);
+}
+
+/**
+ * g_settings_get_string:
+ * @settings: a #GSettings object
+ * @key: the key to get the value for
+ * @returns: a newly-allocated string
+ *
+ * Gets the value that is stored at @key in @settings.
+ *
+ * A convenience variant of g_settings_get() for strings.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type string.
+ *
+ * Since: 2.26
+ */
+gchar *
+g_settings_get_string (GSettings   *settings,
+                       const gchar *key)
+{
+  GVariant *value;
+  gchar *result;
+
+  value = g_settings_get_value (settings, key);
+  result = g_variant_dup_string (value, NULL);
+  g_variant_unref (value);
+
+  return result;
+}
+
+/**
+ * g_settings_set_string:
+ * @settings: a #GSettings object
+ * @key: the name of the key to set
+ * @value: the value to set it to
+ * @returns: %TRUE if setting the key succeeded,
+ *     %FALSE if the key was not writable
+ *
+ * Sets @key in @settings to @value.
+ *
+ * A convenience variant of g_settings_set() for strings.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type string.
+ *
+ * Since: 2.26
+ */
+gboolean
+g_settings_set_string (GSettings   *settings,
+                       const gchar *key,
+                       const gchar *value)
+{
+  return g_settings_set_value (settings, key, g_variant_new_string (value));
+}
+
+/**
+ * g_settings_get_int:
+ * @settings: a #GSettings object
+ * @key: the key to get the value for
+ * @returns: an integer
+ *
+ * Gets the value that is stored at @key in @settings.
+ *
+ * A convenience variant of g_settings_get() for 32-bit integers.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type int32.
+ *
+ * Since: 2.26
+ */
+gint
+g_settings_get_int (GSettings   *settings,
+                    const gchar *key)
+{
+  GVariant *value;
+  gint result;
+
+  value = g_settings_get_value (settings, key);
+  result = g_variant_get_int32 (value);
+  g_variant_unref (value);
+
+  return result;
+}
+
+/**
+ * g_settings_set_int:
+ * @settings: a #GSettings object
+ * @key: the name of the key to set
+ * @value: the value to set it to
+ * @returns: %TRUE if setting the key succeeded,
+ *     %FALSE if the key was not writable
+ *
+ * Sets @key in @settings to @value.
+ *
+ * A convenience variant of g_settings_set() for 32-bit integers.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type int32.
+ *
+ * Since: 2.26
+ */
+gboolean
+g_settings_set_int (GSettings   *settings,
+                    const gchar *key,
+                    gint         value)
+{
+  return g_settings_set_value (settings, key, g_variant_new_int32 (value));
+}
+
+/**
+ * g_settings_get_double:
+ * @settings: a #GSettings object
+ * @key: the key to get the value for
+ * @returns: a double
+ *
+ * Gets the value that is stored at @key in @settings.
+ *
+ * A convenience variant of g_settings_get() for doubles.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type double.
+ *
+ * Since: 2.26
+ */
+gdouble
+g_settings_get_double (GSettings   *settings,
+                       const gchar *key)
+{
+  GVariant *value;
+  gdouble result;
+
+  value = g_settings_get_value (settings, key);
+  result = g_variant_get_double (value);
+  g_variant_unref (value);
+
+  return result;
+}
+
+/**
+ * g_settings_set_double:
+ * @settings: a #GSettings object
+ * @key: the name of the key to set
+ * @value: the value to set it to
+ * @returns: %TRUE if setting the key succeeded,
+ *     %FALSE if the key was not writable
+ *
+ * Sets @key in @settings to @value.
+ *
+ * A convenience variant of g_settings_set() for doubles.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type double.
+ *
+ * Since: 2.26
+ */
+gboolean
+g_settings_set_double (GSettings   *settings,
+                       const gchar *key,
+                       gdouble      value)
+{
+  return g_settings_set_value (settings, key, g_variant_new_double (value));
+}
+
+/**
+ * g_settings_get_boolean:
+ * @settings: a #GSettings object
+ * @key: the key to get the value for
+ * @returns: a boolean
+ *
+ * Gets the value that is stored at @key in @settings.
+ *
+ * A convenience variant of g_settings_get() for booleans.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type boolean.
+ *
+ * Since: 2.26
+ */
+gboolean
+g_settings_get_boolean (GSettings  *settings,
+                       const gchar *key)
+{
+  GVariant *value;
+  gboolean result;
+
+  value = g_settings_get_value (settings, key);
+  result = g_variant_get_boolean (value);
+  g_variant_unref (value);
+
+  return result;
+}
+
+/**
+ * g_settings_set_boolean:
+ * @settings: a #GSettings object
+ * @key: the name of the key to set
+ * @value: the value to set it to
+ * @returns: %TRUE if setting the key succeeded,
+ *     %FALSE if the key was not writable
+ *
+ * Sets @key in @settings to @value.
+ *
+ * A convenience variant of g_settings_set() for booleans.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type boolean.
+ *
+ * Since: 2.26
+ */
+gboolean
+g_settings_set_boolean (GSettings  *settings,
+                       const gchar *key,
+                       gboolean     value)
+{
+  return g_settings_set_value (settings, key, g_variant_new_boolean (value));
+}
+
+/**
+ * g_settings_get_strv:
+ * @settings: a #GSettings object
+ * @key: the key to get the value for
+ * @returns: a newly-allocated, %NULL-terminated array of strings
+ *
+ * Gets the value that is stored at @key in @settings.
+ *
+ * A convenience variant of g_settings_get() for string arrays.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type 'string array'.
+ *
+ * Since: 2.26
+ */
+gchar **
+g_settings_get_strv (GSettings   *settings,
+                     const gchar *key,
+                     gsize       *length)
+{
+  GVariant *value;
+  gchar **result;
+
+  value = g_settings_get_value (settings, key);
+  result = g_variant_dup_strv (value, length);
+  g_variant_unref (value);
+
+  return result;
+}
+
+/**
+ * g_settings_set_strv:
+ * @settings: a #GSettings object
+ * @key: the name of the key to set
+ * @value: the value to set it to
+ * @returns: %TRUE if setting the key succeeded,
+ *     %FALSE if the key was not writable
+ *
+ * Sets @key in @settings to @value.
+ *
+ * A convenience variant of g_settings_set() for string arrays.
+ *
+ * It is a programmer error to pass a @key that isn't valid for
+ * @settings or is not of type 'string array'.
+ *
+ * Since: 2.26
+ */
+gboolean
+g_settings_set_strv (GSettings           *settings,
+                     const gchar         *key,
+                     const gchar * const *value,
+                     gssize               length)
+{
+  return g_settings_set_value (settings, key, g_variant_new_strv (value, length));
+}
+
+#define __G_SETTINGS_C__
+#include "gioaliasdef.c"
diff --git a/gio/gsettings.h b/gio/gsettings.h
new file mode 100644
index 0000000..5a70b5d
--- /dev/null
+++ b/gio/gsettings.h
@@ -0,0 +1,203 @@
+/*
+ * Copyright © 2009, 2010 Codethink Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ryan Lortie <desrt desrt ca>
+ */
+
+#ifndef __G_SETTINGS_H__
+#define __G_SETTINGS_H__
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define G_TYPE_SETTINGS                                     (g_settings_get_type ())
+#define G_SETTINGS(inst)                                    (G_TYPE_CHECK_INSTANCE_CAST ((inst),                     \
+                                                             G_TYPE_SETTINGS, GSettings))
+#define G_SETTINGS_CLASS(class)                             (G_TYPE_CHECK_CLASS_CAST ((class),                       \
+                                                             G_TYPE_SETTINGS, GSettingsClass))
+#define G_IS_SETTINGS(inst)                                 (G_TYPE_CHECK_INSTANCE_TYPE ((inst), G_TYPE_SETTINGS))
+#define G_IS_SETTINGS_CLASS(class)                          (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_SETTINGS))
+#define G_SETTINGS_GET_CLASS(inst)                          (G_TYPE_INSTANCE_GET_CLASS ((inst),                      \
+                                                             G_TYPE_SETTINGS, GSettingsClass))
+
+typedef struct _GSettingsPrivate                            GSettingsPrivate;
+typedef struct _GSettingsClass                              GSettingsClass;
+typedef struct _GSettings                                   GSettings;
+
+struct _GSettingsClass
+{
+  GObjectClass parent_class;
+
+  /* Signals */
+  void        (*writable_changed)      (GSettings    *settings,
+                                        const gchar  *key);
+  void        (*changed)               (GSettings    *settings,
+                                        const gchar  *key);
+  gboolean    (*writable_change_event) (GSettings    *settings,
+                                        GQuark        key);
+  gboolean    (*change_event)          (GSettings    *settings,
+                                        const GQuark *keys,
+                                        gint          n_keys);
+
+  gpointer padding[20];
+};
+
+struct _GSettings
+{
+  GObject parent_instance;
+  GSettingsPrivate *priv;
+};
+
+
+GType                   g_settings_get_type                             (void);
+
+GSettings *             g_settings_new                                  (const gchar        *schema);
+GSettings *             g_settings_new_with_path                        (const gchar        *schema,
+                                                                         const gchar        *path);
+gboolean                g_settings_supports_context                     (const gchar        *context);
+GSettings *             g_settings_new_with_context                     (const gchar        *schema,
+                                                                         const gchar        *context);
+GSettings *             g_settings_new_with_context_and_path            (const gchar        *schema,
+                                                                         const gchar        *context,
+                                                                         const gchar        *path);
+
+gboolean                g_settings_set_value                            (GSettings          *settings,
+                                                                         const gchar        *key,
+                                                                         GVariant           *value);
+GVariant *              g_settings_get_value                            (GSettings          *settings,
+                                                                         const gchar        *key);
+
+gboolean                g_settings_set                                  (GSettings          *settings,
+                                                                         const gchar        *key,
+                                                                         const gchar        *format,
+                                                                         ...);
+void                    g_settings_get                                  (GSettings          *settings,
+                                                                         const gchar        *key,
+                                                                         const gchar        *format,
+                                                                         ...);
+
+gint                    g_settings_get_int                              (GSettings          *settings,
+                                                                         const gchar        *key);
+gboolean                g_settings_set_int                              (GSettings          *settings,
+                                                                         const gchar        *key,
+                                                                         gint                value);
+gchar *                 g_settings_get_string                           (GSettings          *settings,
+                                                                         const gchar        *key);
+gboolean                g_settings_set_string                           (GSettings          *settings,
+                                                                         const gchar        *key,
+                                                                         const gchar        *value);
+gboolean                g_settings_get_boolean                          (GSettings          *settings,
+                                                                         const gchar        *key);
+gboolean                g_settings_set_boolean                          (GSettings          *settings,
+                                                                         const gchar        *key,
+                                                                         gboolean            value);
+gdouble                 g_settings_get_double                           (GSettings          *settings,
+                                                                         const gchar        *key);
+gboolean                g_settings_set_double                           (GSettings          *settings,
+                                                                         const gchar        *key,
+                                                                         gdouble             value);
+gchar **                g_settings_get_strv                             (GSettings          *settings,
+                                                                         const gchar        *key,
+                                                                         gsize              *length);
+gboolean                g_settings_set_strv                             (GSettings          *settings,
+                                                                         const gchar        *key,
+                                                                         const gchar *const *value,
+                                                                         gssize              length);
+
+GSettings *             g_settings_get_child                            (GSettings          *settings,
+                                                                         const gchar        *name);
+
+gboolean                g_settings_is_writable                          (GSettings          *settings,
+                                                                         const gchar        *name);
+
+void                    g_settings_delay                                (GSettings          *settings);
+void                    g_settings_apply                                (GSettings          *settings);
+void                    g_settings_revert                               (GSettings          *settings);
+gboolean                g_settings_get_has_unapplied                    (GSettings          *settings);
+
+/**
+ * GSettingsBindSetMapping:
+ * @value: a #GValue containing the property value to map
+ * @expected_type: the #GVariantType to create
+ * @user_data: user data that was specified when the binding was created
+ * @returns: a new #GVariant holding the data from @value,
+ *     or %NULL in case of an error
+ *
+ * The type for the function that is used to convert an object property
+ * value to a #GVariant for storing it in #GSettings.
+ */
+typedef GVariant *    (*GSettingsBindSetMapping)                        (const GValue       *value,
+                                                                         const GVariantType *expected_type,
+                                                                         gpointer            user_data);
+
+/**
+ * GSettingsBindGetMapping:
+ * @value: return location for the property value
+ * @variant: the #GVariant
+ * @user_data: user data that was specified when the binding was created
+ * @returns: %TRUE if the conversion succeeded, %FALSE in case of an error
+ *
+ * The type for the function that is used to convert from #GSettings to
+ * an object property. The @value is already initialized to hold values
+ * of the appropriate type.
+ */
+typedef gboolean      (*GSettingsBindGetMapping)                        (GValue             *value,
+                                                                         GVariant           *variant,
+                                                                         gpointer            user_data);
+
+/**
+ * GSettingsBindFlags:
+ * @G_SETTINGS_BIND_DEFAULT: Equivalent to <literal>G_SETTINGS_BIND_GET|G_SETTINGS_BIND_SET</literal>
+ * @G_SETTINGS_BIND_GET: Update the #GObject property when the #GSettings key changes
+ * @G_SETTINGS_BIND_SET: Update the #GSettings key when the #GObject property changes
+ * @G_SETTINGS_BIND_NO_SENSITIVITY: Do not try to bind a "sensitivity" property to #GSettings writability
+ *
+ * Flags used when creating a binding. These flags determine in which
+ * direction the binding works. The default is to synchronize in both
+ * directions.
+ */
+typedef enum
+{
+  G_SETTINGS_BIND_DEFAULT,
+  G_SETTINGS_BIND_GET            = (1<<0),
+  G_SETTINGS_BIND_SET            = (1<<1),
+  G_SETTINGS_BIND_NO_SENSITIVITY = (1<<2),
+  G_SETTINGS_BIND_GET_NO_CHANGES = (1<<3)
+} GSettingsBindFlags;
+
+void                    g_settings_bind                                 (GSettings               *settings,
+                                                                         const gchar             *key,
+                                                                         gpointer                 object,
+                                                                         const gchar             *property,
+                                                                         GSettingsBindFlags       flags);
+void                    g_settings_bind_with_mapping                    (GSettings               *settings,
+                                                                         const gchar             *key,
+                                                                         gpointer                 object,
+                                                                         const gchar             *property,
+                                                                         GSettingsBindFlags       flags,
+                                                                         GSettingsBindGetMapping  get_mapping,
+                                                                         GSettingsBindSetMapping  set_mapping,
+                                                                         gpointer                 user_data,
+                                                                         GDestroyNotify           destroy);
+void                    g_settings_unbind                               (gpointer                 object,
+                                                                         const gchar             *property);
+
+G_END_DECLS
+
+#endif  /* __G_SETTINGS_H__ */
diff --git a/gio/pltcheck.sh b/gio/pltcheck.sh
index bfd73fa..08f6e47 100755
--- a/gio/pltcheck.sh
+++ b/gio/pltcheck.sh
@@ -9,7 +9,7 @@ if ! which readelf 2>/dev/null >/dev/null; then
 	exit 0
 fi
 
-SKIP='\<g_access\|\<g_array_\|\<g_ascii\|\<g_list_\|\<g_assertion_message\|\<g_warn_message\|\<g_atomic\|\<g_bit_\|\<g_boxed\|\<g_build_filename\|\<g_byte_array\|\<g_checksum\|\<g_child_watch\|\<g_clear_error\|\<g_convert\|\<g_dir_\|\<g_enum_\|\<g_error_\|\<g_prefix_error\|\<g_file_error_quark\|\<g_file_get_contents\|\<g_file_set_contents\|\<g_file_test\|\<g_file_read_link\|\<g_filename_\|\<g_find_program_in_path\|\<g_flags_\|\<g_free\|\<g_get_\|\<g_getenv\|\<g_setenv\|\<g_hash_table_\|\<g_hostname_\|\<g_iconv\|\<g_idle_\|\<g_intern_static_string\|\<g_io_add_watch\|\<g_io_channel_\|\<g_io_create_watch\|\<g_key_file_\|\<g_listenv\|\<g_locale_to_utf8\|\<g_log\|\<g_main_context_\|\<g_main_current_source\|\<g_main_loop_\|\<g_malloc\|\<g_markup_\|\<g_mkdir_\|\<g_mkstemp\|\<g_module_\|\<g_object_\|\<g_once_\|\<g_param_spec_\|\<g_path_\|\<g_poll\|\<g_printerr\|\<g_propagate_error\|\<g_ptr_array_\|\<g_qsort_\|\<g_quark_\|\<g_queue_\|\<g_random_int_range\|\<g_realloc\|\<g_return_if_f
 ail\|\<g_set_error\|\<g_shell_\|\<g_signal_\|\<g_slice_\|\<g_slist_\|\<g_snprintf\|\<g_source_\|\<g_spawn_\|\<g_static_\|\<g_str\|\<g_thread_pool_\|\<g_time_val_add\|\<g_timeout_\|\<g_type_\|\<g_unlink\|\<g_uri_\|\<g_utf8_\|\<g_value_\|\<g_tree_\|\<g_variant_\|\<g_mapped_file_'
+SKIP='\<g_access\|\<g_array_\|\<g_ascii\|\<g_list_\|\<g_assertion_message\|\<g_warn_message\|\<g_atomic\|\<g_bit_\|\<g_boxed\|\<g_build_filename\|\<g_byte_array\|\<g_checksum\|\<g_child_watch\|\<g_clear_error\|\<g_convert\|\<g_dir_\|\<g_enum_\|\<g_error_\|\<g_prefix_error\|\<g_file_error_quark\|\<g_file_get_contents\|\<g_file_set_contents\|\<g_file_test\|\<g_file_read_link\|\<g_filename_\|\<g_find_program_in_path\|\<g_flags_\|\<g_free\|\<g_get_\|\<g_getenv\|\<g_setenv\|\<g_hash_table_\|\<g_hostname_\|\<g_iconv\|\<g_idle_\|\<g_intern_static_string\|\<g_io_add_watch\|\<g_io_channel_\|\<g_io_create_watch\|\<g_key_file_\|\<g_listenv\|\<g_locale_to_utf8\|\<g_log\|\<g_main_context_\|\<g_main_current_source\|\<g_main_loop_\|\<g_malloc\|\<g_markup_\|\<g_mkdir_\|\<g_mkstemp\|\<g_module_\|\<g_object_\|\<g_once_\|\<g_param_spec_\|\<g_path_\|\<g_poll\|\<g_printerr\|\<g_propagate_error\|\<g_ptr_array_\|\<g_qsort_\|\<g_quark_\|\<g_queue_\|\<g_random_int_range\|\<g_realloc\|\<g_return_if_f
 ail\|\<g_set_error\|\<g_shell_\|\<g_signal_\|\<g_slice_\|\<g_slist_\|\<g_snprintf\|\<g_source_\|\<g_spawn_\|\<g_static_\|\<g_str\|\<g_thread_pool_\|\<g_time_val_add\|\<g_timeout_\|\<g_type_\|\<g_unlink\|\<g_uri_\|\<g_utf8_\|\<g_value_\|\<g_tree_\|\<g_variant_\|\<g_mapped_file_\|\<g_intern_string\>'
 
 for so in .libs/lib*.so; do
 	echo Checking $so for local PLT entries



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