Blob Blame History Raw
From 3130e980aafbb1ec025a7ca68559fb83e801cba3 Mon Sep 17 00:00:00 2001
From: fujiwarat <takao.fujiwara1@gmail.com>
Date: Fri, 19 Apr 2013 09:46:33 +0900
Subject: [PATCH] Add libgnomekbd and load preload engines.

---
 bindings/vala/Gkbd-3.0.metadata |   1 +
 bindings/vala/Makefile.am       |  19 +-
 bindings/vala/Xkl-1.0.metadata  |   3 +
 bindings/vala/gkbd.deps         |   3 +
 configure.ac                    |  40 ++++
 data/ibus.schemas.in            |  59 +++++
 ibus-1.0.pc.in                  |   1 +
 ibus.spec.in                    |  12 ++
 src/Makefile.am                 |   3 +
 src/ibus.h                      |   1 +
 src/ibusxkbxml.c                | 466 ++++++++++++++++++++++++++++++++++++++++
 src/ibusxkbxml.h                | 187 ++++++++++++++++
 ui/gtk3/Makefile.am             |  36 ++++
 ui/gtk3/gkbdlayout.vala.false   |  63 ++++++
 ui/gtk3/gkbdlayout.vala.true    | 108 ++++++++++
 ui/gtk3/panel.vala              | 216 ++++++++++++++++++-
 ui/gtk3/xkblayout.vala          | 431 +++++++++++++++++++++++++++++++++++++
 17 files changed, 1645 insertions(+), 4 deletions(-)
 create mode 100644 bindings/vala/Gkbd-3.0.metadata
 create mode 100644 bindings/vala/Xkl-1.0.metadata
 create mode 100644 bindings/vala/gkbd.deps
 create mode 100644 src/ibusxkbxml.c
 create mode 100644 src/ibusxkbxml.h
 create mode 100644 ui/gtk3/gkbdlayout.vala.false
 create mode 100644 ui/gtk3/gkbdlayout.vala.true
 create mode 100644 ui/gtk3/xkblayout.vala

diff --git a/bindings/vala/Gkbd-3.0.metadata b/bindings/vala/Gkbd-3.0.metadata
new file mode 100644
index 0000000..661e6fd
--- /dev/null
+++ b/bindings/vala/Gkbd-3.0.metadata
@@ -0,0 +1 @@
+Configuration cheader_filename="libgnomekbd/gkbd-configuration.h"
diff --git a/bindings/vala/Makefile.am b/bindings/vala/Makefile.am
index aba3454..3f93fba 100644
--- a/bindings/vala/Makefile.am
+++ b/bindings/vala/Makefile.am
@@ -28,8 +28,6 @@ vapi_deps = \
 	$(top_builddir)/src/IBus-1.0.gir \
 	$(NULL)
 
-ibus-1.0.vapi: $(vapi_deps)
-
 VAPIGEN_VAPIS = ibus-1.0.vapi
 
 ibus_1_0_vapi_DEPS = gio-2.0
@@ -39,15 +37,30 @@ ibus_1_0_vapi_FILES = \
 	$(srcdir)/IBus-1.0-custom.vala \
 	$(NULL)
 
+if ENABLE_LIBGNOMEKBD
+ibus-1.0.vapi: $(vapi_deps) gkbd.vapi
+
+VAPIGEN_VAPIS += gkbd.vapi
+
+gkbd_vapi_DEPS = gtk+-3.0 glib-2.0 gmodule-2.0
+gkbd_vapi_METADATADIRS = $(srcdir)
+gkbd_vapi_FILES = /usr/share/gir-1.0/Gkbd-3.0.gir
+else
+ibus-1.0.vapi: $(vapi_deps)
+endif
+
 vapidir = $(datadir)/vala/vapi
-vapi_DATA = $(VAPIGEN_VAPIS) $(VAPIGEN_VAPIS:.vapi=.deps)
+vapi_DATA = ibus-1.0.vapi ibus-1.0.deps
 
 EXTRA_DIST = \
+	Gkbd-3.0.metadata \
+	gkbd.deps \
 	IBus-1.0.metadata \
 	IBus-1.0-custom.vala \
 	ibus-1.0.deps \
 	config.vapi \
 	xi.vapi \
+	Xkl-1.0.metadata \
 	$(NULL)
 
 -include $(top_srcdir)/git.mk
diff --git a/bindings/vala/Xkl-1.0.metadata b/bindings/vala/Xkl-1.0.metadata
new file mode 100644
index 0000000..4961d0c
--- /dev/null
+++ b/bindings/vala/Xkl-1.0.metadata
@@ -0,0 +1,3 @@
+Xkl cheader_filename="libxklavier/xklavier.h"
+Engine
+    .filter_events.evt ref type="X.Event"
diff --git a/bindings/vala/gkbd.deps b/bindings/vala/gkbd.deps
new file mode 100644
index 0000000..172632c
--- /dev/null
+++ b/bindings/vala/gkbd.deps
@@ -0,0 +1,3 @@
+gtk+-3.0
+glib-2.0
+gmodule-2.0
diff --git a/configure.ac b/configure.ac
index 3036792..06b6e0c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -237,6 +237,45 @@ else
     enable_xim="no (disabled, use --enable-xim to enable)"
 fi
 
+# Option for XKB command.
+PKG_CHECK_MODULES(XKB,
+    [xkbfile],,
+    [XKB_LIBS="-lxkbfile"]
+)
+
+# --enable-libgnomekbd option.
+AC_ARG_ENABLE(libgnomekbd,
+    AS_HELP_STRING([--enable-libgnomekbd],
+                   [Use libgnomekbd to handle the keymaps]),
+    [enable_libgnomekbd=$enableval],
+    [enable_libgnomekbd=no]
+)
+AM_CONDITIONAL([ENABLE_LIBGNOMEKBD], [test x"$enable_libgnomekbd" = x"yes"])
+if test x"$enable_libgnomekbd" = x"yes"; then
+    # check for libgnomekbd
+    PKG_CHECK_MODULES(LIBGNOMEKBDUI, [
+        libgnomekbdui
+    ])
+    PKG_CHECK_MODULES(ATK, [
+        atk
+    ])
+    HAVE_IBUS_GKBD=true
+else
+    enable_libgnomekbd="no (disabled, use --enable-libgnomekbd to enable)"
+    HAVE_IBUS_GKBD=false
+fi
+AC_SUBST(HAVE_IBUS_GKBD)
+
+# Define XKB rules file
+AC_ARG_WITH(xkb-rules-xml,
+    AS_HELP_STRING([--with-xkb-rules-xml[=$DIR/evdev.xml]],
+        [Set evdev.xml file path (default: /usr/share/X11/xkb/rules/evdev.xml)]),
+    XKB_RULES_XML_FILE=$with_xkb_rules_xml,
+    XKB_RULES_XML_FILE="/usr/share/X11/xkb/rules/evdev.xml"
+)
+AC_DEFINE_UNQUOTED(XKB_RULES_XML_FILE, "$XKB_RULES_XML_FILE",
+    [Define file path of evdev.xml])
+
 # GObject introspection
 GOBJECT_INTROSPECTION_CHECK([0.6.8])
 
@@ -574,6 +613,7 @@ Build options:
   No snooper regexes        "$NO_SNOOPER_APPS"
   Panel icon                "$IBUS_ICON_KEYBOARD"
   Enable surrounding-text   $enable_surrounding_text
+  Build libgnomebkd         $enable_libgnomekbd
   Run test cases            $enable_tests
 ])
 
diff --git a/data/ibus.schemas.in b/data/ibus.schemas.in
index 54ccb4c..704ba60 100644
--- a/data/ibus.schemas.in
+++ b/data/ibus.schemas.in
@@ -42,6 +42,52 @@
       </locale>
     </schema>
     <schema>
+      <key>/schemas/desktop/ibus/general/use_xmodmap</key>
+      <applyto>/desktop/ibus/general/use_xmodmap</applyto>
+      <owner>ibus</owner>
+      <type>bool</type>
+      <default>true</default>
+      <locale name="C">
+        <short>Use xmodmap</short>
+           <long>Run xmodmap if .xmodmap/.Xmodmap exists.</long>
+      </locale>
+    </schema>
+    <schema>
+      <key>/schemas/desktop/ibus/general/xkb_latin_layouts</key>
+      <applyto>/desktop/ibus/general/xkb_latin_layouts</applyto>
+      <owner>ibus</owner>
+      <type>list</type>
+      <list_type>string</list_type>
+      <default>[ara,bg,cz,dev,gr,gur,in,jp(kana),mal,mkd,ru,ua]</default>
+      <locale name="C">
+        <short>Latin layout which have no ASCII</short>
+           <long>us layout is appended to the latin layouts. variant is not needed.</long>
+      </locale>
+    </schema>
+    <schema>
+      <key>/schemas/desktop/ibus/general/load_xkb_layouts</key>
+      <applyto>/desktop/ibus/general/load_xkb_layouts</applyto>
+      <owner>ibus</owner>
+      <type>list</type>
+      <list_type>string</list_type>
+      <default>[us,us(chr),us(dvorak),ad,al,am,ara,az,ba,bd,be,bg,br,bt,by,
+de,dk,ca,ch,cn(tib),cz,ee,epo,es,et,fi,fo,fr,
+gb,ge,ge(dsb),ge(ru),ge(os),gh,gh(akan),gh(ewe),gh(fula),gh(ga),gh(hausa),
+gn,gr,hu,hr,ie,ie(CloGaelach),il,
+in,
+in(tel),in(bolnagri),iq,iq(ku),ir,ir(ku),is,it,jp,
+kg,kh,kz,la,latam,lk,lk(tam_unicode),lt,lv,ma,ma(tifinagh),mal,mao,
+me,mk,mm,mt,mv,ng,ng(hausa),ng,ng(igbo),ng(yoruba),nl,no,no(smi),np,
+pk,pl,pl(csb),pt,ro,rs,ru,ru(cv),ru(kom),ru(sah),ru(tt),ru(xal),
+se,si,sk,sy,sy(ku),th,tj,tr,ua,uz,vn
+]</default>
+      <locale name="C">
+        <short>XKB layout list which is shown on ibus-setup</short>
+           <long>XKB layout list which is shown on ibus-setup.
+                 The format is "layout" or "layout(variant)".</long>
+      </locale>
+    </schema>
+    <schema>
       <key>/schemas/desktop/ibus/general/hotkey/trigger</key>
       <applyto>/desktop/ibus/general/hotkey/trigger</applyto>
       <owner>ibus</owner>
@@ -66,6 +112,19 @@
       </locale>
     </schema>
     <schema>
+      <key>/schemas/desktop/ibus/general/hotkey/triggers-no-modifiers</key>
+      <applyto>/desktop/ibus/general/hotkey/triggers-no-modifiers</applyto>
+      <owner>ibus</owner>
+      <type>list</type>
+      <list_type>string</list_type>
+      <default>[]</default>
+      <locale name="C">
+        <short>Trigger shortcut keys without modifier keys</short>
+          <long>Trigger shortcut keys without modifier keys.
+                The list is used by ibus-gjs.</long>
+      </locale>
+    </schema>
+    <schema>
       <key>/schemas/desktop/ibus/general/hotkey/enable_unconditional</key>
       <applyto>/desktop/ibus/general/hotkey/enable_unconditional</applyto>
       <owner>ibus</owner>
diff --git a/ibus-1.0.pc.in b/ibus-1.0.pc.in
index 9f593ab..c93a0ed 100644
--- a/ibus-1.0.pc.in
+++ b/ibus-1.0.pc.in
@@ -4,6 +4,7 @@ libdir=@libdir@
 includedir=@includedir@
 datadir=@datadir@
 pkgdatadir=@datadir@/ibus
+have_ibus_gkbd=@HAVE_IBUS_GKBD@
 
 Name: IBus
 Description: IBus Library
diff --git a/ibus.spec.in b/ibus.spec.in
index 7989949..5391538 100644
--- a/ibus.spec.in
+++ b/ibus.spec.in
@@ -5,6 +5,7 @@
 
 # Build flags
 %define build_python_library 0
+%define build_libgnomekbd 0
 
 %define glib_ver %([ -a %{_libdir}/pkgconfig/glib-2.0.pc ] && pkg-config --modversion glib-2.0 | cut -d. -f 1,2 || echo -n "999")
 %define gconf2_version 2.12.0
@@ -40,6 +41,10 @@ BuildRequires:  dconf-devel
 BuildRequires:  pygobject2-devel
 BuildRequires:  intltool
 BuildRequires:  iso-codes-devel
+%if %{build_libgnomekbd}
+BuildRequires:  libxkbfile-devel
+BuildRequires:  libgnomekbd-devel
+%endif
 
 Requires:   %{name}-libs = %{version}-%{release}
 Requires:   %{name}-gtk2 = %{version}-%{release}
@@ -53,6 +58,9 @@ Requires:   dbus-python >= %{dbus_python_version}
 Requires:   im-chooser >= %{im_chooser_version}
 Requires:   notify-python
 Requires:   librsvg2
+%if %{build_libgnomekbd}
+Requires:   libgnomekbd
+%endif
 
 Requires(post):  desktop-file-utils
 Requires(postun):  desktop-file-utils
@@ -153,6 +161,10 @@ OPTIONS="$OPTIONS --enable-python-library"
 OPTIONS="$OPTIONS --disable-python-library"
 %endif
 
+%if %{build_libgnomekbd}
+OPTIONS="$OPTIONS --enable-libgnomekbd"
+%endif
+
 %configure $OPTIONS
 
 # make -C po update-gmo
diff --git a/src/Makefile.am b/src/Makefile.am
index 7ee5df8..8fa954e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -197,6 +197,9 @@ typelibs_DATA = $(INTROSPECTION_GIRS:.gir=.typelib)
 CLEANFILES += $(dist_gir_DATA) $(typelibs_DATA)
 endif
 
+ibus_sources += ibusxkbxml.c
+ibus_headers += ibusxkbxml.h
+
 # gen enum types
 ibusenumtypes.h: $(ibus_headers) ibusenumtypes.h.template
 	$(AM_V_GEN) ( top_builddir=`cd $(top_builddir) && pwd`; \
diff --git a/src/ibus.h b/src/ibus.h
index ef811a4..f82a162 100644
--- a/src/ibus.h
+++ b/src/ibus.h
@@ -47,6 +47,7 @@
 #include <ibuskeys.h>
 #include <ibusenumtypes.h>
 #include <ibushotkey.h>
+#include <ibusxkbxml.h>
 #include <ibusxml.h>
 #include <ibusenginedesc.h>
 #include <ibusobservedpath.h>
diff --git a/src/ibusxkbxml.c b/src/ibusxkbxml.c
new file mode 100644
index 0000000..4792664
--- /dev/null
+++ b/src/ibusxkbxml.c
@@ -0,0 +1,466 @@
+/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
+/* vim:set et sts=4: */
+/* bus - The Input Bus
+ * Copyright (C) 2012 Takao Fujiwara <takao.fujiwara1@gmail.com>
+ * Copyright (C) 2012 Peng Huang <shawn.p.huang@gmail.com>
+ * Copyright (C) 2012 Red Hat, 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 License, 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.
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <glib.h>
+
+#include "ibus.h"
+#include "ibusxkbxml.h"
+
+#ifndef XKB_RULES_XML_FILE
+#define XKB_RULES_XML_FILE "/usr/share/X11/xkb/rules/evdev.xml"
+#endif
+
+#define IBUS_XKB_CONFIG_REGISTRY_GET_PRIVATE(o)  \
+   (G_TYPE_INSTANCE_GET_PRIVATE ((o), IBUS_TYPE_XKB_CONFIG_REGISTRY, IBusXKBConfigRegistryPrivate))
+
+typedef struct _IBusXKBConfigRegistryPrivate IBusXKBConfigRegistryPrivate;
+
+struct _IBusXKBConfigRegistryPrivate {
+    GHashTable *layout_list;
+    GHashTable *layout_lang;
+    GHashTable *layout_desc;
+    GHashTable *variant_desc;
+};
+
+
+/* functions prototype */
+static void         ibus_xkb_config_registry_destroy
+                                           (IBusXKBConfigRegistry *xkb_config);
+
+G_DEFINE_TYPE (IBusXKBConfigRegistry, ibus_xkb_config_registry, IBUS_TYPE_OBJECT)
+
+static void
+parse_xkb_xml_languagelist_node (IBusXKBConfigRegistryPrivate *priv,
+                                 XMLNode *parent_node,
+                                 const gchar *layout_name)
+{
+    XMLNode *node = parent_node;
+    XMLNode *sub_node;
+    GList *p;
+    GList *lang_list = NULL;
+
+    g_assert (node != NULL);
+    g_assert (layout_name != NULL);
+    for (p = node->sub_nodes; p; p = p->next) {
+        sub_node = (XMLNode *) p->data;
+        if (g_strcmp0 (sub_node->name, "iso639Id") == 0) {
+            lang_list = g_list_append (lang_list,
+                                       (gpointer) g_strdup (sub_node->text));
+            continue;
+        }
+    }
+    if (lang_list == NULL) {
+        /* some nodes have no lang */
+        return;
+    }
+    if (g_hash_table_lookup (priv->layout_lang, layout_name) != NULL) {
+        g_warning ("duplicated name %s exists", layout_name);
+        return;
+    }
+    g_hash_table_insert (priv->layout_lang,
+                         (gpointer) g_strdup (layout_name),
+                         (gpointer) lang_list);
+}
+
+static const gchar *
+parse_xkb_xml_configitem_node (IBusXKBConfigRegistryPrivate *priv,
+                               XMLNode *parent_node)
+{
+    XMLNode *node = parent_node;
+    XMLNode *sub_node;
+    GList *p;
+    gchar *name = NULL;
+    gchar *description = NULL;
+
+    g_assert (node != NULL);
+    for (p = node->sub_nodes; p; p = p->next) {
+        sub_node = (XMLNode *) p->data;
+        if (g_strcmp0 (sub_node->name, "name") == 0) {
+            name = sub_node->text;
+            continue;
+        }
+        if (g_strcmp0 (sub_node->name, "description") == 0) {
+            description = sub_node->text;
+            continue;
+        }
+        if (g_strcmp0 (sub_node->name, "languageList") == 0) {
+            if (name == NULL) {
+                g_warning ("layout name is NULL in node %s", node->name);
+                continue;
+            }
+            parse_xkb_xml_languagelist_node (priv, sub_node, name);
+            continue;
+        }
+    }
+    if (name == NULL) {
+        g_warning ("No name in layout node");
+        return NULL;
+    }
+    if (g_hash_table_lookup (priv->layout_desc, name) != NULL) {
+        g_warning ("duplicated name %s exists", name);
+        return name;
+    }
+    g_hash_table_insert (priv->layout_desc,
+                         (gpointer) g_strdup (name),
+                         (gpointer) g_strdup (description));
+
+    return name;
+}
+
+static const gchar *
+parse_xkb_xml_variant_configitem_node (IBusXKBConfigRegistryPrivate *priv,
+                            XMLNode *parent_node,
+                            const gchar *layout_name)
+{
+    XMLNode *node = parent_node;
+    XMLNode *sub_node;
+    GList *p;
+    gchar *name = NULL;
+    gchar *description = NULL;
+    gchar *variant_lang_name = NULL;
+
+    g_assert (node != NULL);
+    g_assert (layout_name != NULL);
+    for (p = node->sub_nodes; p; p = p->next) {
+        sub_node = (XMLNode *) p->data;
+        if (g_strcmp0 (sub_node->name, "name") == 0) {
+            name = sub_node->text;
+            continue;
+        }
+        if (g_strcmp0 (sub_node->name, "description") == 0) {
+            description = sub_node->text;
+            continue;
+        }
+        if (g_strcmp0 (sub_node->name, "languageList") == 0) {
+            if (name == NULL) {
+                g_warning ("layout name is NULL in node %s", node->name);
+                continue;
+            }
+            variant_lang_name = g_strdup_printf ("%s(%s)", layout_name, name);
+            parse_xkb_xml_languagelist_node (priv, sub_node, variant_lang_name);
+            g_free (variant_lang_name);
+            continue;
+        }
+    }
+    if (name == NULL) {
+        g_warning ("No name in layout node");
+        return NULL;
+    }
+    if (g_hash_table_lookup (priv->variant_desc, name) != NULL) {
+        /* This is an expected case. */
+        return name;
+    }
+    variant_lang_name = g_strdup_printf ("%s(%s)", layout_name, name);
+    g_hash_table_insert (priv->variant_desc,
+                         (gpointer) variant_lang_name,
+                         (gpointer) g_strdup (description));
+    return name;
+}
+
+static const gchar *
+parse_xkb_xml_variant_node (IBusXKBConfigRegistryPrivate *priv,
+                            XMLNode *parent_node,
+                            const gchar *layout_name)
+{
+    XMLNode *node = parent_node;
+    XMLNode *sub_node;
+    GList *p;
+    const gchar *variant_name = NULL;
+
+    g_assert (node != NULL);
+    g_assert (layout_name != NULL);
+    for (p = node->sub_nodes; p; p = p->next) {
+        sub_node = (XMLNode *) p->data;
+        if (g_strcmp0 (sub_node->name, "configItem") == 0) {
+            variant_name = parse_xkb_xml_variant_configitem_node (priv, sub_node, layout_name);
+            continue;
+        }
+    }
+    return variant_name;
+}
+
+static GList *
+parse_xkb_xml_variantlist_node (IBusXKBConfigRegistryPrivate *priv,
+                                XMLNode *parent_node,
+                                const gchar *layout_name,
+                                GList *variant_list)
+{
+    XMLNode *node = parent_node;
+    XMLNode *sub_node;
+    GList *p;
+    const gchar *variant_name = NULL;
+
+    g_assert (node != NULL);
+    g_assert (layout_name != NULL);
+    for (p = node->sub_nodes; p; p = p->next) {
+        sub_node = (XMLNode *) p->data;
+        if (g_strcmp0 (sub_node->name, "variant") == 0) {
+            variant_name = parse_xkb_xml_variant_node (priv, sub_node, layout_name);
+            if (variant_name != NULL) {
+                variant_list = g_list_append (variant_list,
+                                              (gpointer) g_strdup (variant_name));
+            }
+            continue;
+        }
+    }
+    return variant_list;
+}
+
+static void
+parse_xkb_xml_layout_node (IBusXKBConfigRegistryPrivate *priv,
+                           XMLNode *parent_node)
+{
+    XMLNode *node = parent_node;
+    XMLNode *sub_node;
+    GList *p;
+    const gchar *name = NULL;
+    GList *variant_list = NULL;
+
+    g_assert (node != NULL);
+    for (p = node->sub_nodes; p; p = p->next) {
+        sub_node = (XMLNode *) p->data;
+        if (g_strcmp0 (sub_node->name, "configItem") == 0) {
+            name = parse_xkb_xml_configitem_node (priv, sub_node);
+            continue;
+        }
+        if (g_strcmp0 (sub_node->name, "variantList") == 0) {
+            if (name == NULL) {
+                g_warning ("layout name is NULL in node %s", node->name);
+                continue;
+            }
+            variant_list = parse_xkb_xml_variantlist_node (priv, sub_node,
+                                                           name,
+                                                           variant_list);
+            continue;
+        }
+    }
+    if (g_hash_table_lookup (priv->layout_list, name) != NULL) {
+        g_warning ("duplicated name %s exists", name);
+        return;
+    }
+    g_hash_table_insert (priv->layout_list,
+                         (gpointer) g_strdup (name),
+                         (gpointer) variant_list);
+}
+
+static void
+parse_xkb_xml_top_node (IBusXKBConfigRegistryPrivate *priv,
+                        XMLNode *parent_node)
+{
+    XMLNode *node = parent_node;
+    XMLNode *sub_node;
+    GList *p;
+
+    g_assert (priv != NULL);
+    g_assert (node != NULL);
+
+    if (g_strcmp0 (node->name, "xkbConfigRegistry") != 0) {
+        g_warning ("node has no xkbConfigRegistry name");
+        return;
+    }
+    for (p = node->sub_nodes; p; p = p->next) {
+        sub_node = (XMLNode *) p->data;
+        if (g_strcmp0 (sub_node->name, "layoutList") == 0) {
+            break;
+        }
+    }
+    if (p == NULL) {
+        g_warning ("xkbConfigRegistry node has no layoutList node");
+        return;
+    }
+    node = sub_node;
+    for (p = node->sub_nodes; p; p = p->next) {
+        sub_node = (XMLNode *) p->data;
+        if (g_strcmp0 (sub_node->name, "layout") == 0) {
+            parse_xkb_xml_layout_node (priv, sub_node);
+            continue;
+        }
+    }
+}
+
+static void
+free_lang_list (GList *list)
+{
+    GList *l = list;
+    while (l) {
+        g_free (l->data);
+        l->data = NULL;
+        l = l->next;
+    }
+    g_list_free (list);
+}
+
+static void
+parse_xkb_config_registry_file (IBusXKBConfigRegistryPrivate *priv,
+                                const gchar *file)
+{
+    XMLNode *node;
+
+    g_assert (file != NULL);
+
+    priv->layout_list = g_hash_table_new_full (g_str_hash,
+                                               (GEqualFunc) g_str_equal,
+                                               (GDestroyNotify) g_free,
+                                               (GDestroyNotify) free_lang_list);
+    priv->layout_desc = g_hash_table_new_full (g_str_hash,
+                                               (GEqualFunc) g_str_equal,
+                                               (GDestroyNotify) g_free,
+                                               (GDestroyNotify) g_free);
+    priv->layout_lang = g_hash_table_new_full (g_str_hash,
+                                               (GEqualFunc) g_str_equal,
+                                               (GDestroyNotify) g_free,
+                                               (GDestroyNotify) free_lang_list);
+    priv->variant_desc = g_hash_table_new_full (g_str_hash,
+                                               (GEqualFunc) g_str_equal,
+                                               (GDestroyNotify) g_free,
+                                               (GDestroyNotify) g_free);
+    node = ibus_xml_parse_file (file);
+    parse_xkb_xml_top_node (priv, node);
+    ibus_xml_free (node);
+}
+
+static void
+ibus_xkb_config_registry_init (IBusXKBConfigRegistry *xkb_config)
+{
+    IBusXKBConfigRegistryPrivate *priv;
+    const gchar *file = XKB_RULES_XML_FILE;
+
+    priv = IBUS_XKB_CONFIG_REGISTRY_GET_PRIVATE (xkb_config);
+    parse_xkb_config_registry_file (priv, file);
+}
+
+static void
+ibus_xkb_config_registry_destroy (IBusXKBConfigRegistry *xkb_config)
+{
+    IBusXKBConfigRegistryPrivate *priv;
+
+    g_return_if_fail (xkb_config != NULL);
+
+    priv = IBUS_XKB_CONFIG_REGISTRY_GET_PRIVATE (xkb_config);
+
+    g_hash_table_destroy (priv->layout_list);
+    priv->layout_list = NULL;
+    g_hash_table_destroy (priv->layout_lang);
+    priv->layout_lang= NULL;
+    g_hash_table_destroy (priv->layout_desc);
+    priv->layout_desc= NULL;
+    g_hash_table_destroy (priv->variant_desc);
+    priv->variant_desc = NULL;
+
+    IBUS_OBJECT_CLASS(ibus_xkb_config_registry_parent_class)->destroy (IBUS_OBJECT (xkb_config));
+}
+
+static void
+ibus_xkb_config_registry_class_init (IBusXKBConfigRegistryClass *klass)
+{
+    IBusObjectClass *ibus_object_class = IBUS_OBJECT_CLASS (klass);
+
+    g_type_class_add_private (klass, sizeof (IBusXKBConfigRegistryPrivate));
+
+    ibus_object_class->destroy = (IBusObjectDestroyFunc) ibus_xkb_config_registry_destroy;
+}
+
+IBusXKBConfigRegistry *
+ibus_xkb_config_registry_new (void)
+{
+    IBusXKBConfigRegistry *xkb_config;
+
+    xkb_config = IBUS_XKB_CONFIG_REGISTRY (g_object_new (IBUS_TYPE_XKB_CONFIG_REGISTRY, NULL));
+    return xkb_config;
+}
+
+#define TABLE_FUNC(field_name) const GHashTable *                       \
+ibus_xkb_config_registry_get_##field_name  (IBusXKBConfigRegistry *xkb_config) \
+{                                                                       \
+    IBusXKBConfigRegistryPrivate *priv;                                 \
+                                                                        \
+    g_return_val_if_fail (xkb_config != NULL, NULL);                    \
+    priv = IBUS_XKB_CONFIG_REGISTRY_GET_PRIVATE (xkb_config);           \
+    return priv->field_name;                                            \
+}
+
+TABLE_FUNC (layout_list)
+TABLE_FUNC (layout_lang)
+TABLE_FUNC (layout_desc)
+TABLE_FUNC (variant_desc)
+
+#undef TABLE_FUNC
+
+GList *
+ibus_xkb_config_registry_layout_list_get_layouts (IBusXKBConfigRegistry *xkb_config)
+{
+    GHashTable *table;
+    GList *list = NULL;
+
+    table = (GHashTable *)
+        ibus_xkb_config_registry_get_layout_list (xkb_config);
+    list = (GList *) g_hash_table_get_keys (table);
+    return list;
+}
+
+/* vala could use GLib.List<string> for the returned pointer and
+ * the declaration calls g_list_foreach (retval, g_free, NULL).
+ * When I think about GLib.List<string> v.s. GLib.List, probably
+ * I think GLib.List<string> is better for the function and set
+ * g_strdup() here. I do not know about GJS implementation.
+ */
+#define TABLE_LOOKUP_LIST_FUNC(field_name, value) GList *               \
+ibus_xkb_config_registry_##field_name##_get_##value  (IBusXKBConfigRegistry *xkb_config, const gchar *key) \
+{                                                                       \
+    GHashTable *table;                                                  \
+    GList *list = NULL;                                                 \
+    GList *retval= NULL;                                                \
+    GList *p = NULL;                                                    \
+                                                                        \
+    table = (GHashTable *)                                              \
+        ibus_xkb_config_registry_get_##field_name (xkb_config);         \
+    list = (GList *) g_hash_table_lookup (table, key);                  \
+    retval = g_list_copy (list);                                        \
+    for (p = retval; p; p = p->next) {                                  \
+        p->data = g_strdup (p->data);                                   \
+    }                                                                   \
+    return retval;                                                      \
+}
+
+#define TABLE_LOOKUP_STRING_FUNC(field_name, value) gchar *             \
+ibus_xkb_config_registry_##field_name##_get_##value  (IBusXKBConfigRegistry *xkb_config, const gchar *key) \
+{                                                                       \
+    GHashTable *table;                                                  \
+    const gchar *desc = NULL;                                           \
+                                                                        \
+    table = (GHashTable *)                                              \
+        ibus_xkb_config_registry_get_##field_name (xkb_config);         \
+    desc = (const gchar *) g_hash_table_lookup (table, key);            \
+    return g_strdup (desc);                                             \
+}
+
+TABLE_LOOKUP_LIST_FUNC (layout_list, variants)
+TABLE_LOOKUP_LIST_FUNC (layout_lang, langs)
+TABLE_LOOKUP_STRING_FUNC (layout_desc, desc)
+TABLE_LOOKUP_STRING_FUNC (variant_desc, desc)
+
+#undef TABLE_LOOKUP_LIST_FUNC
+#undef TABLE_LOOKUP_STRING_FUNC
diff --git a/src/ibusxkbxml.h b/src/ibusxkbxml.h
new file mode 100644
index 0000000..6f5b7bd
--- /dev/null
+++ b/src/ibusxkbxml.h
@@ -0,0 +1,187 @@
+/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
+/* vim:set et sts=4: */
+/* bus - The Input Bus
+ * Copyright (C) 2012 Takao Fujiwara <takao.fujiwara1@gmail.com>
+ * Copyright (C) 2012 Peng Huang <shawn.p.huang@gmail.com>
+ * Copyright (C) 2012 Red Hat, 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 License, 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.
+ */
+#ifndef __IBUS_XKBXML_H_
+#define __IBUS_XKBXML_H_
+
+#if !defined (__IBUS_H_INSIDE__) && !defined (IBUS_COMPILATION)
+#error "Only <ibus.h> can be included directly"
+#endif
+
+#include "ibus.h"
+
+/*
+ * Type macros.
+ */
+/* define IBusXKBConfigRegistry macros */
+#define IBUS_TYPE_XKB_CONFIG_REGISTRY                   \
+    (ibus_xkb_config_registry_get_type ())
+#define IBUS_XKB_CONFIG_REGISTRY(obj)                   \
+    (G_TYPE_CHECK_INSTANCE_CAST ((obj), IBUS_TYPE_XKB_CONFIG_REGISTRY, IBusXKBConfigRegistry))
+#define IBUS_XKB_CONFIG_REGISTRY_CLASS(klass)           \
+    (G_TYPE_CHECK_CLASS_CAST ((klass), IBUS_TYPE_XKB_CONFIG_REGISTRY, IBusXKBConfigRegistryClass))
+#define IBUS_IS_XKB_CONFIG_REGISTRY(obj)                \
+    (G_TYPE_CHECK_INSTANCE_TYPE ((obj), IBUS_TYPE_XKB_CONFIG_REGISTRY))
+#define IBUS_IS_XKB_CONFIG_REGISTRY_CLASS(klass)        \
+    (G_TYPE_CHECK_CLASS_TYPE ((klass), IBUS_TYPE_XKB_CONFIG_REGISTRY))
+#define IBUS_XKB_CONFIG_REGISTRY_GET_CLASS(obj)         \
+    (G_TYPE_INSTANCE_GET_CLASS ((obj), IBUS_TYPE_XKB_CONFIG_REGISTRY, IBusXKBConfigRegistryClass))
+
+G_BEGIN_DECLS
+
+typedef struct _IBusXKBConfigRegistry IBusXKBConfigRegistry;
+typedef struct _IBusXKBConfigRegistryClass IBusXKBConfigRegistryClass;
+
+struct _IBusXKBConfigRegistry {
+    IBusObject parent;
+};
+
+struct _IBusXKBConfigRegistryClass {
+    IBusObjectClass parent;
+    /* signals */
+    /*< private >*/
+    /* padding */
+    gpointer pdummy[8];
+};
+
+
+GType            ibus_xkb_config_registry_get_type
+                                                 (void);
+
+/**
+ * ibus_xkb_config_registry_new:
+ * @returns: A newly allocated IBusXKBConfigRegistry
+ *
+ * New an IBusXKBConfigRegistry.
+ */
+IBusXKBConfigRegistry *
+                 ibus_xkb_config_registry_new
+                                                 (void);
+
+/**
+ * ibus_xkb_config_registry_get_layout_list: (skip)
+ * @xkb_config: An IBusXKBConfigRegistry.
+ * @returns: A const GHashTable
+ *
+ * a const GHashTable
+ */
+const GHashTable *
+                 ibus_xkb_config_registry_get_layout_list
+                                                 (IBusXKBConfigRegistry *xkb_config);
+
+/**
+ * ibus_xkb_config_registry_get_layout_lang: (skip)
+ * @xkb_config: An IBusXKBConfigRegistry.
+ * @returns: A const GHashTable
+ *
+ * a const GHashTable
+ */
+const GHashTable *
+                 ibus_xkb_config_registry_get_layout_lang
+                                                 (IBusXKBConfigRegistry *xkb_config);
+
+/**
+ * ibus_xkb_config_registry_get_layout_desc: (skip)
+ * @xkb_config: An IBusXKBConfigRegistry.
+ * @returns: A const GHashTable
+ *
+ * a const GHashTable
+ */
+const GHashTable *
+                 ibus_xkb_config_registry_get_layout_desc
+                                                 (IBusXKBConfigRegistry *xkb_config);
+
+/**
+ * ibus_xkb_config_registry_get_variant_desc: (skip)
+ * @xkb_config: An IBusXKBConfigRegistry.
+ * @returns: A const GHashTable
+ *
+ * a const GHashTable
+ */
+const GHashTable *
+                 ibus_xkb_config_registry_get_variant_desc
+                                                 (IBusXKBConfigRegistry *xkb_config);
+
+/**
+ * ibus_xkb_config_registry_layout_list_get_layouts:
+ * @xkb_config: An IBusXKBConfigRegistry.
+ * @returns: (transfer container) (element-type utf8): A GList of layouts
+ *
+ * a GList of layouts
+ */
+GList *
+                 ibus_xkb_config_registry_layout_list_get_layouts
+                                                 (IBusXKBConfigRegistry *xkb_config);
+
+/**
+ * ibus_xkb_config_registry_layout_list_get_variants:
+ * @xkb_config: An IBusXKBConfigRegistry.
+ * @layout: A layout.
+ * @returns: (transfer container) (element-type utf8): A GList
+ *
+ * a GList
+ */
+GList *
+                 ibus_xkb_config_registry_layout_list_get_variants
+                                                 (IBusXKBConfigRegistry *xkb_config,
+                                                  const gchar           *layout);
+
+/**
+ * ibus_xkb_config_registry_layout_lang_get_langs:
+ * @xkb_config: An IBusXKBConfigRegistry.
+ * @layout: A layout.
+ * @returns: (transfer container) (element-type utf8): A GList
+ *
+ * a GList
+ */
+GList *
+                 ibus_xkb_config_registry_layout_lang_get_langs
+                                                 (IBusXKBConfigRegistry *xkb_config,
+                                                  const gchar           *layout);
+
+/**
+ * ibus_xkb_config_registry_layout_desc_get_desc:
+ * @xkb_config: An IBusXKBConfigRegistry.
+ * @layout: A layout.
+ * @returns: A layout description
+ *
+ * a layout description
+ */
+gchar *
+                 ibus_xkb_config_registry_layout_desc_get_desc
+                                                 (IBusXKBConfigRegistry *xkb_config,
+                                                  const gchar           *layout);
+
+/**
+ * ibus_xkb_config_registry_variant_desc_get_desc:
+ * @xkb_config: An IBusXKBConfigRegistry.
+ * @variant: A variant.
+ * @returns: A variant description
+ *
+ * a variant description
+ */
+gchar *
+                 ibus_xkb_config_registry_variant_desc_get_desc
+                                                 (IBusXKBConfigRegistry *xkb_config,
+                                                  const gchar           *variant);
+G_END_DECLS
+#endif
diff --git a/ui/gtk3/Makefile.am b/ui/gtk3/Makefile.am
index 43454bc..6b7e70a 100644
--- a/ui/gtk3/Makefile.am
+++ b/ui/gtk3/Makefile.am
@@ -45,6 +45,8 @@ USE_SYMBOL_ICON = FALSE
 # force include config.h before gi18n.h.
 AM_CPPFLAGS = -include $(CONFIG_HEADER)
 
+HAVE_IBUS_GKBD_C = $(strip $(subst false, FALSE, $(subst true, TRUE, $(HAVE_IBUS_GKBD))))
+
 AM_CFLAGS = \
 	@GLIB2_CFLAGS@ \
 	@GIO2_CFLAGS@ \
@@ -56,6 +58,8 @@ AM_CFLAGS = \
 	-DBINDIR=\"$(bindir)\" \
 	-DIBUS_DISABLE_DEPRECATED \
 	-DSWITCHER_USE_SYMBOL_ICON=$(USE_SYMBOL_ICON) \
+	-DHAVE_IBUS_GKBD=$(HAVE_IBUS_GKBD_C) \
+	-DXKB_LAYOUTS_MAX_LENGTH=4 \
 	-Wno-unused-variable \
 	-Wno-unused-but-set-variable \
 	-Wno-unused-function \
@@ -83,12 +87,40 @@ AM_VALAFLAGS = \
 	--pkg=xi \
 	$(NULL)
 
+if ENABLE_LIBGNOMEKBD
+AM_CFLAGS += \
+	@LIBGNOMEKBDUI_CFLAGS@ \
+	@ATK_CFLAGS@ \
+	$(NULL)
+
+AM_LDADD += \
+	@LIBGNOMEKBDUI_LIBS@ \
+	@ATK_LIBS@ \
+	$(NULL)
+
+AM_VALAFLAGS += \
+	--vapidir=. \
+	--metadatadir=$(top_srcdir)/bindings/vala \
+	--pkg=glib-2.0 \
+	--pkg=gmodule-2.0 \
+	--pkg=gkbd \
+	--pkg=Xkl-1.0 \
+	$(NULL)
+
+$(srcdir)/gkbdlayout.vala: $(top_builddir)/bindings/vala/gkbd.vapi
+	@cp $(srcdir)/gkbdlayout.vala.true $(srcdir)/gkbdlayout.vala
+else
+$(srcdir)/gkbdlayout.vala:
+	@cp $(srcdir)/gkbdlayout.vala.false $(srcdir)/gkbdlayout.vala
+endif
+
 libexec_PROGRAMS = ibus-ui-gtk3
 
 ibus_ui_gtk3_SOURCES = \
 	application.vala \
 	candidatearea.vala \
 	candidatepanel.vala \
+	gkbdlayout.vala \
 	handle.vala \
 	iconwidget.vala \
 	keybindingmanager.vala \
@@ -97,6 +129,7 @@ ibus_ui_gtk3_SOURCES = \
 	property.vala \
 	separator.vala \
 	switcher.vala \
+	xkblayout.vala \
 	$(NULL)
 
 ibus_ui_gtk3_LDADD = \
@@ -105,9 +138,12 @@ ibus_ui_gtk3_LDADD = \
 
 CLEANFILES = \
 	gtkpanel.xml \
+	gkbdlayout.vala \
 	$(NULL)
 
 EXTRA_DIST = \
+	gkbdlayout.vala.false \
+	gkbdlayout.vala.true \
 	gtkpanel.xml.in \
 	$(NULL)
 
diff --git a/ui/gtk3/gkbdlayout.vala.false b/ui/gtk3/gkbdlayout.vala.false
new file mode 100644
index 0000000..a387de9
--- /dev/null
+++ b/ui/gtk3/gkbdlayout.vala.false
@@ -0,0 +1,63 @@
+/* vim:set et sts=4 sw=4:
+ *
+ * ibus - The Input Bus
+ *
+ * Copyright 2012 Red Hat, Inc.
+ * Copyright(c) 2012 Peng Huang <shawn.p.huang@gmail.com>
+ * Copyright(c) 2012 Takao Fujiwara <tfujiwar@redhat.com>
+ *
+ * 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 License, 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 program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA  02111-1307  USA
+ */
+
+public class GkbdLayout
+{
+    public signal void changed();
+    public signal void group_changed (int object);
+
+    public GkbdLayout() {
+    }
+
+    public string[] get_layouts() {
+        return new string[0];
+    }
+
+    public string[] get_group_names() {
+        return new string[0];
+    }
+
+    public void lock_group(int id) {
+    }
+
+    public void start_listen() {
+    }
+
+    public void stop_listen() {
+    }
+
+    /*
+    public static int main(string[] args) {
+        GkbdLayout ibus_layouts = new GkbdLayout();
+
+        string[] layouts = ibus_layouts.get_layouts();
+        string[] names = ibus_layouts.get_group_names();
+        for (int i = 0; layouts != null && i < layouts.length; i++) {
+            stdout.printf("%s %s\n", layouts[i], names[i]);
+        }
+
+        return 0;
+    }
+    */
+}
diff --git a/ui/gtk3/gkbdlayout.vala.true b/ui/gtk3/gkbdlayout.vala.true
new file mode 100644
index 0000000..2b78c69
--- /dev/null
+++ b/ui/gtk3/gkbdlayout.vala.true
@@ -0,0 +1,108 @@
+/* vim:set et sts=4 sw=4:
+ *
+ * ibus - The Input Bus
+ *
+ * Copyright 2012 Red Hat, Inc.
+ * Copyright(c) 2012 Peng Huang <shawn.p.huang@gmail.com>
+ * Copyright(c) 2012 Takao Fujiwara <tfujiwar@redhat.com>
+ *
+ * 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 License, 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 program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA  02111-1307  USA
+ */
+
+public class GkbdLayout
+{
+    public signal void changed();
+    public signal void group_changed (int object);
+
+    private Gkbd.Configuration m_config = null;
+
+    public GkbdLayout() {
+        m_config = Gkbd.Configuration.get();
+        if (m_config != null) {
+            m_config.changed.connect(config_changed_cb);
+            m_config.group_changed.connect(config_group_changed_cb);
+        }
+    }
+
+    ~GkbdLayout() {
+        if (m_config != null) {
+            m_config.changed.disconnect(config_changed_cb);
+            m_config.group_changed.disconnect(config_group_changed_cb);
+            /* gkbd_configuration_get reuses the object and do not
+             * destroy m_config here. */
+            m_config.ref();
+            m_config = null;
+        }
+    }
+
+    private void config_changed_cb() {
+        changed();
+    }
+
+    private void config_group_changed_cb(int object) {
+        group_changed(object);
+    }
+
+    public string[] get_layouts() {
+        if (m_config == null) {
+            return new string[0];
+        }
+        return m_config.get_short_group_names();
+    }
+
+    public string[] get_group_names() {
+        if (m_config == null) {
+            return new string[0];
+        }
+        return m_config.get_group_names();
+    }
+
+    public void lock_group(int id) {
+        if (m_config == null) {
+            return;
+        }
+        m_config.lock_group(id);
+    }
+
+    public void start_listen() {
+        if (m_config == null) {
+            return;
+        }
+        m_config.start_listen();
+    }
+
+    public void stop_listen() {
+        if (m_config == null) {
+            return;
+        }
+        m_config.stop_listen();
+    }
+
+    /*
+    public static int main(string[] args) {
+        Gtk.init(ref args);
+        GkbdLayout ibus_layouts = new GkbdLayout();
+
+        string[] layouts = ibus_layouts.get_layouts();
+        string[] names = ibus_layouts.get_group_names();
+        for (int i = 0; layouts != null && i < layouts.length; i++) {
+            stdout.printf("%s %s\n", layouts[i], names[i]);
+        }
+
+        return 0;
+    }
+    */
+}
diff --git a/ui/gtk3/panel.vala b/ui/gtk3/panel.vala
index 0d7a5b2..10eaa0c 100644
--- a/ui/gtk3/panel.vala
+++ b/ui/gtk3/panel.vala
@@ -49,6 +49,13 @@ class Panel : IBus.PanelService {
     private Gtk.CssProvider m_css_provider;
     private int m_switcher_delay_time = 400;
     private bool m_use_system_keyboard_layout = false;
+    private GkbdLayout m_gkbdlayout = null;
+    private XKBLayout m_xkblayout = null;
+    private string[] m_layouts = {};
+    private string[] m_variants = {};
+    private int m_fallback_lock_id = -1;
+    private bool m_changed_xkb_option = false;
+    private GLib.Timer m_changed_layout_timer;
     private const string ACCELERATOR_SWITCH_IME_FOREWARD = "<Control>space";
 
     private GLib.List<Keybinding> m_keybindings = new GLib.List<Keybinding>();
@@ -91,6 +98,14 @@ class Panel : IBus.PanelService {
 
     ~Panel() {
         unbind_switch_shortcut();
+
+        if (HAVE_IBUS_GKBD && m_gkbdlayout != null) {
+            m_gkbdlayout.changed.disconnect(gkbdlayout_changed_cb);
+            m_gkbdlayout.stop_listen();
+            m_gkbdlayout = null;
+        }
+
+        m_xkblayout = null;
     }
 
     private void keybinding_manager_bind(KeybindingManager keybinding_manager,
@@ -299,6 +314,7 @@ class Panel : IBus.PanelService {
             m_config.watch("general/hotkey", "triggers");
             m_config.watch("panel", "custom_font");
             m_config.watch("panel", "use_custom_font");
+            init_engines_order();
             // Update m_use_system_keyboard_layout before update_engines()
             // is called.
             set_use_system_keyboard_layout(null);
@@ -314,6 +330,204 @@ class Panel : IBus.PanelService {
         set_custom_font();
     }
 
+    private void gkbdlayout_changed_cb() {
+        /* The callback is called four times after set_layout is called
+         * so check the elapsed and take the first signal only. */
+        double elapsed = m_changed_layout_timer.elapsed();
+        if (elapsed < 1.0 && elapsed > 0.0) {
+            return;
+        }
+
+        if (m_fallback_lock_id != -1) {
+            /* Call lock_group only when set_layout is called. */
+            m_gkbdlayout.lock_group(m_fallback_lock_id);
+            m_fallback_lock_id = -1;
+        } else {
+            /* Reset default layout when gnome-control-center is called. */
+            m_xkblayout.reset_layout();
+        }
+
+        update_xkb_engines();
+        m_changed_layout_timer.reset();
+    }
+
+    private void init_gkbd() {
+        m_gkbdlayout = new GkbdLayout();
+        m_gkbdlayout.changed.connect(gkbdlayout_changed_cb);
+
+        /* Probably we cannot support both keyboard and ibus indicators
+         * How can I get the engine from keymap of group_id?
+         * e.g. 'en' could be owned by xkb:en and pinyin engines. */
+        //m_gkbdlayout.group_changed.connect((object) => {});
+
+        m_changed_layout_timer = new GLib.Timer();
+        m_changed_layout_timer.start();
+        m_gkbdlayout.start_listen();
+    }
+
+    private void init_engines_order() {
+        if (m_config == null) {
+            return;
+        }
+
+        m_xkblayout = new XKBLayout(m_config);
+        string session = Environment.get_variable("DESKTOP_SESSION");
+
+        if (HAVE_IBUS_GKBD &&
+            session != null && session.length >= 5 &&
+            session[0:5] == "gnome") {
+            init_gkbd();
+        }
+
+        update_xkb_engines();
+    }
+
+    private void update_xkb_engines() {
+        string var_layout = m_xkblayout.get_layout();
+        string var_variant = m_xkblayout.get_variant();
+        if (var_layout == "") {
+            return;
+        }
+
+        m_layouts = var_layout.split(",");
+        m_variants = var_variant.split(",");
+
+        IBus.XKBConfigRegistry registry = new IBus.XKBConfigRegistry();
+        string[] var_xkb_engine_names = {};
+        for (int i = 0; i < m_layouts.length; i++) {
+            string name = m_layouts[i];
+            string lang = null;
+
+            if (i < m_variants.length && m_variants[i] != "") {
+                name = "%s:%s".printf(name, m_variants[i]);
+                string layout = "%s(%s)".printf(name, m_variants[i]);
+                GLib.List<string> langs =
+                        registry.layout_lang_get_langs(layout);
+                if (langs.length() != 0) {
+                    lang = langs.data;
+                }
+            } else {
+                name = "%s:".printf(name);
+            }
+
+            if (lang == null) {
+                GLib.List<string> langs =
+                        registry.layout_lang_get_langs(m_layouts[i]);
+                if (langs.length() != 0) {
+                    lang = langs.data;
+                }
+            }
+
+            var_xkb_engine_names += "%s:%s:%s".printf("xkb", name, lang);
+        }
+
+        GLib.Variant var_engines =
+           m_config.get_value("general", "preload_engines");
+        string[] engine_names = {};
+        bool updated_engine_names = false;
+
+        if (var_engines != null) {
+            engine_names = var_engines.dup_strv();
+        }
+
+        foreach (string name in var_xkb_engine_names) {
+            if (name in engine_names)
+                continue;
+            updated_engine_names = true;
+            engine_names += name;
+        }
+
+        if (updated_engine_names) {
+            m_config.set_value("general",
+                               "preload_engines",
+                               new GLib.Variant.strv(engine_names));
+        }
+
+        GLib.Variant var_order =
+            m_config.get_value("general", "engines_order");
+        string[] order_names = {};
+        bool updated_order_names = false;
+
+        if (var_order != null) {
+            order_names = var_order.dup_strv();
+        }
+
+        foreach (var name in var_xkb_engine_names) {
+            if (name in order_names)
+                continue;
+            order_names += name;
+            updated_order_names = true;
+        }
+
+        if (updated_order_names) {
+            m_config.set_value("general",
+                               "engines_order",
+                               new GLib.Variant.strv(order_names));
+        }
+    }
+
+    private void set_xkb_group_layout(IBus.EngineDesc engine) {
+        int[] retval = m_xkblayout.set_layout(engine, true);
+        if (retval[0] >= 0) {
+            /* If an XKB keymap is added into the XKB group,
+             * this._gkbdlayout.lock_group will be called after
+             * 'group-changed' signal is received. */
+            m_fallback_lock_id = retval[0];
+            m_changed_xkb_option = (retval[1] != 0) ? true : false;
+        }
+    }
+
+    private bool set_gkbd_layout(IBus.EngineDesc engine) {
+        string layout = engine.get_layout();
+        string variant = engine.get_layout_variant();
+
+        /* If a previous ibus engine changed XKB options, need to set the
+         * default XKB option. */
+        if (m_changed_xkb_option == true) {
+            m_changed_xkb_option = false;
+            return false;
+        }
+
+        if (variant != "" && variant != "default") {
+            layout = "%s(%s)".printf(layout, variant);
+        }
+
+        int gkbd_len = m_gkbdlayout.get_group_names().length;
+        for (int i = 0; i < m_layouts.length && i < gkbd_len; i++) {
+            string sys_layout = m_layouts[i];
+            if (i < m_variants.length && m_variants[i] != "") {
+                sys_layout = "%s(%s)".printf(sys_layout, m_variants[i]);
+            }
+            if (sys_layout == layout) {
+                m_gkbdlayout.lock_group(i);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private void set_layout(IBus.EngineDesc engine) {
+        string layout = engine.get_layout();
+
+        if (layout == "" || layout == null) {
+            return;
+        }
+
+        if (m_xkblayout == null) {
+            init_engines_order();
+        }
+
+        if (HAVE_IBUS_GKBD && m_gkbdlayout != null) {
+            if (set_gkbd_layout(engine)) {
+                return;
+            }
+            set_xkb_group_layout(engine);
+            return;
+        }
+
+        m_xkblayout.set_layout(engine);
+    }
+
     private void exec_setxkbmap(IBus.EngineDesc engine) {
         string layout = engine.get_layout();
         string variant = engine.get_layout_variant();
@@ -374,7 +588,7 @@ class Panel : IBus.PanelService {
         }
         // set xkb layout
         if (!m_use_system_keyboard_layout) {
-            exec_setxkbmap(engine);
+           set_layout(engine);
         }
     }
 
diff --git a/ui/gtk3/xkblayout.vala b/ui/gtk3/xkblayout.vala
new file mode 100644
index 0000000..165a905
--- /dev/null
+++ b/ui/gtk3/xkblayout.vala
@@ -0,0 +1,431 @@
+/* vim:set et sts=4 sw=4:
+ *
+ * ibus - The Input Bus
+ *
+ * Copyright 2012 Red Hat, Inc.
+ * Copyright(c) 2012 Peng Huang <shawn.p.huang@gmail.com>
+ * Copyright(c) 2012 Takao Fujiwara <tfujiwar@redhat.com>
+ *
+ * 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 License, 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 program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA  02111-1307  USA
+ */
+
+public extern const bool HAVE_IBUS_GKBD;
+public extern const int XKB_LAYOUTS_MAX_LENGTH;
+
+class XKBLayout
+{
+    string m_xkb_command = "setxkbmap";
+    IBus.Config m_config = null;
+    string[] m_xkb_latin_layouts = {};
+    GLib.Pid m_xkb_pid = -1;
+    GLib.Pid m_xmodmap_pid = -1;
+    string m_xmodmap_command = "xmodmap";
+    bool m_use_xmodmap = true;
+    string[] m_xmodmap_known_files = {".xmodmap", ".xmodmaprc",
+                                      ".Xmodmap", ".Xmodmaprc"};
+    string m_default_layout = "";
+    string m_default_variant = "";
+    string m_default_option = "";
+
+    public XKBLayout(IBus.Config? config) {
+        m_config = config;
+
+        if (config != null) {
+            var value  = config.get_value("general", "xkb_latin_layouts");
+            for (int i = 0; value != null && i < value.n_children(); i++) {
+                m_xkb_latin_layouts +=
+                        value.get_child_value(i).dup_string();
+            }
+            if (m_use_xmodmap) {
+                m_use_xmodmap = config.get_value("general", "use_xmodmap").get_boolean();
+            }
+        }
+    }
+
+    private string get_output_from_cmdline(string arg, string element) {
+        string[] exec_command = {};
+        exec_command += m_xkb_command;
+        exec_command += arg;
+        string standard_output = null;
+        string standard_error = null;
+        int exit_status = 0;
+        string retval = "";
+        try {
+            GLib.Process.spawn_sync(null,
+                                    exec_command,
+                                    null,
+                                    GLib.SpawnFlags.SEARCH_PATH,
+                                    null,
+                                    out standard_output,
+                                    out standard_error,
+                                    out exit_status);
+        } catch (GLib.SpawnError err) {
+            stderr.printf("IBUS_ERROR: %s\n", err.message);
+        }
+        if (exit_status != 0) {
+            stderr.printf("IBUS_ERROR: %s\n", standard_error ?? "");
+        }
+        if (standard_output == null) {
+            return "";
+        }
+        foreach (string line in standard_output.split("\n")) {
+            if (element.length <= line.length &&
+                line[0:element.length] == element) {
+                retval = line[element.length:line.length];
+                if (retval == null) {
+                    retval = "";
+                } else {
+                    retval = retval.strip();
+                }
+            }
+        }
+        return retval;
+    }
+
+    private void set_layout_cb(GLib.Pid pid, int status) {
+        if (m_xkb_pid != pid) {
+            stderr.printf("IBUS_ERROR: set_layout_cb has another pid\n");
+            return;
+        }
+        GLib.Process.close_pid(m_xkb_pid);
+        m_xkb_pid = -1;
+        set_xmodmap();
+    }
+
+    private void set_xmodmap_cb(GLib.Pid pid, int status) {
+        if (m_xmodmap_pid != pid) {
+            stderr.printf("IBUS_ERROR: set_xmodmap_cb has another pid\n");
+            return;
+        }
+        GLib.Process.close_pid(m_xmodmap_pid);
+        m_xmodmap_pid = -1;
+    }
+
+    private string get_fullpath(string command) {
+        string envpath = GLib.Environment.get_variable("PATH");
+        foreach (string dir in envpath.split(":")) {
+            string filepath = GLib.Path.build_filename(dir, command);
+            if (GLib.FileUtils.test(filepath, GLib.FileTest.EXISTS)) {
+                return filepath;
+            }
+        }
+        return "";
+    }
+
+    private string[] get_xkb_group_layout (string layout,
+                                           string variant,
+                                           int layouts_max_length) {
+        int group_id = 0;
+        int i = 0;
+        string[] layouts = m_default_layout.split(",");
+        string[] variants = m_default_variant.split(",");
+        string group_layouts = "";
+        string group_variants = "";
+        bool has_variant = false;
+        bool include_keymap = false;
+
+        for (i = 0; i < layouts.length; i++) {
+            if (i >= layouts_max_length - 1) {
+                break;
+            }
+
+            if (i == 0) {
+                group_layouts = layouts[i];
+            } else {
+                group_layouts = "%s,%s".printf(group_layouts, layouts[i]);
+            }
+
+            if (i >= variants.length) {
+                if (i == 0) {
+                    group_variants = "";
+                } else {
+                    group_variants += ",";
+                }
+                if (layout == layouts[i] && variant == "") {
+                    include_keymap = true;
+                    group_id = i;
+                }
+                continue;
+            }
+            if (layout == layouts[i] && variant == variants[i]) {
+                include_keymap = true;
+                group_id = i;
+            }
+
+            if (variants[i] != "") {
+                has_variant = true;
+            }
+
+            if (i == 0) {
+                group_variants = variants[i];
+            } else {
+                group_variants = "%s,%s".printf(group_variants, variants[i]);
+            }
+        }
+
+        if (variant != "") {
+            has_variant = true;
+        }
+
+        if (!include_keymap) {
+            group_layouts = "%s,%s".printf(group_layouts, layout);
+            group_variants = "%s,%s".printf(group_variants, variant);
+            group_id = i;
+        }
+
+        if (!has_variant) {
+            group_variants = null;
+        }
+
+        return {group_layouts, group_variants, group_id.to_string()};
+    }
+
+    public string[] get_variant_from_layout(string layout) {
+        int left_bracket = layout.index_of("(");
+        int right_bracket = layout.index_of(")");
+        if (left_bracket >= 0 && right_bracket > left_bracket) {
+            return {layout[0:left_bracket] +
+                    layout[right_bracket + 1:layout.length],
+                    layout[left_bracket + 1:right_bracket]};
+        }
+        return {layout, "default"};
+    }
+
+    public string[] get_option_from_layout(string layout) {
+        int left_bracket = layout.index_of("[");
+        int right_bracket = layout.index_of("]");
+        if (left_bracket >= 0 && right_bracket > left_bracket) {
+            return {layout[0:left_bracket] +
+                    layout[right_bracket + 1:layout.length],
+                    layout[left_bracket + 1:right_bracket]};
+        }
+        return {layout, "default"};
+    }
+
+    public string get_layout() {
+        return get_output_from_cmdline("-query", "layout: ");
+    }
+
+    public string get_variant() {
+        return get_output_from_cmdline("-query", "variant: ");
+    }
+
+    public string get_option() {
+        return get_output_from_cmdline("-query", "options: ");
+    }
+
+    /*
+    public string get_group() {
+        return get_output_from_cmdline("--get-group", "group: ");
+    }
+    */
+
+    public int[] set_layout(IBus.EngineDesc engine,
+                            bool use_group_layout=false) {
+        string layout = engine.get_layout();
+        string variant = engine.get_layout_variant();
+        string option = engine.get_layout_option();
+
+        assert (layout != null);
+
+        int xkb_group_id = 0;
+        int changed_option = 0;
+
+        if (m_xkb_pid != -1) {
+            return {-1, 0};
+        }
+
+        if (layout == "default" &&
+            (variant == "default" || variant == "") &&
+            (option == "default" || option == "")) {
+            return {-1, 0};
+        }
+
+        bool need_us_layout = false;
+        foreach (string latin_layout in m_xkb_latin_layouts) {
+            if (layout == latin_layout && variant != "eng") {
+                need_us_layout = true;
+                break;
+            }
+            if (variant != null &&
+                "%s(%s)".printf(layout, variant) == latin_layout) {
+                need_us_layout = true;
+                break;
+            }
+        }
+
+        int layouts_max_length =  XKB_LAYOUTS_MAX_LENGTH;
+        if (need_us_layout) {
+            layouts_max_length--;
+        }
+
+        if (m_default_layout == "") {
+            m_default_layout = get_layout();
+        }
+        if (m_default_variant  == "") {
+            m_default_variant  = get_variant();
+        }
+        if (m_default_option == "") {
+            m_default_option = get_option();
+        }
+
+        if (layout == "default") {
+            layout = m_default_layout;
+            variant = m_default_variant;
+        } else {
+            if (use_group_layout) {
+                if (variant == "default") {
+                    variant = "";
+                }
+                string[] retval = get_xkb_group_layout (layout, variant,
+                                                        layouts_max_length);
+                layout = retval[0];
+                variant = retval[1];
+                xkb_group_id = int.parse(retval[2]);
+            }
+        }
+
+        if (layout == "") {
+            warning("Could not get the correct layout");
+            return {-1, 0};
+        }
+
+        if (variant == "default" || variant == "") {
+            variant = null;
+        }
+
+        if (option == "default" || option == "") {
+            option = m_default_option;
+        } else {
+            if (!(option in m_default_option.split(","))) {
+                option = "%s,%s".printf(m_default_option, option);
+                changed_option = 1;
+            } else {
+                option = m_default_option;
+            }
+        }
+
+        if (option == "") {
+            option = null;
+        }
+
+        if (need_us_layout) {
+            layout += ",us";
+            if (variant != null) {
+                variant += ",";
+            }
+        }
+
+        string[] args = {};
+        args += m_xkb_command;
+        args += "-layout";
+        args += layout;
+        if (variant != null) {
+            args += "-variant";
+            args += variant;
+        }
+        if (option != null) {
+            /* TODO: Need to get the session XKB options */
+            args += "-option";
+            args += "-option";
+            args += option;
+        }
+
+        GLib.Pid child_pid;
+        try {
+            GLib.Process.spawn_async(null,
+                                     args,
+                                     null,
+                                     GLib.SpawnFlags.DO_NOT_REAP_CHILD |
+                                         GLib.SpawnFlags.SEARCH_PATH,
+                                     null,
+                                     out child_pid);
+        } catch (GLib.SpawnError err) {
+            stderr.printf("Execute setxkbmap failed: %s\n", err.message);
+            return {-1, 0};
+        }
+        m_xkb_pid = child_pid;
+        GLib.ChildWatch.add(m_xkb_pid, set_layout_cb);
+
+        return {xkb_group_id, changed_option};
+    }
+
+    public void set_xmodmap() {
+        if (!m_use_xmodmap) {
+            return;
+        }
+
+        if (m_xmodmap_pid != -1) {
+            return;
+        }
+
+        string xmodmap_cmdpath = get_fullpath(m_xmodmap_command);
+        if (xmodmap_cmdpath == "") {
+            xmodmap_cmdpath = m_xmodmap_command;
+        }
+        string homedir = GLib.Environment.get_home_dir();
+        foreach (string xmodmap_file in m_xmodmap_known_files) {
+            string xmodmap_filepath = GLib.Path.build_filename(homedir, xmodmap_file);
+            if (!GLib.FileUtils.test(xmodmap_filepath, GLib.FileTest.EXISTS)) {
+                continue;
+            }
+            string[] args = {xmodmap_cmdpath, xmodmap_filepath};
+
+            GLib.Pid child_pid;
+            try {
+                GLib.Process.spawn_async(null,
+                                         args,
+                                         null,
+                                         GLib.SpawnFlags.DO_NOT_REAP_CHILD |
+                                             GLib.SpawnFlags.SEARCH_PATH,
+                                         null,
+                                         out child_pid);
+            } catch (GLib.SpawnError err) {
+                stderr.printf("IBUS_ERROR: %s\n", err.message);
+                return;
+            }
+            m_xmodmap_pid = child_pid;
+            GLib.ChildWatch.add(m_xmodmap_pid, set_xmodmap_cb);
+
+            break;
+        }
+    }
+
+    public void reset_layout() {
+        m_default_layout = get_layout();
+        m_default_variant = get_variant();
+        m_default_option = get_option();
+    }
+
+    /*
+    public static int main(string[] args) {
+        IBus.Bus bus = new IBus.Bus();
+        IBus.Config config = bus.get_config();
+        XKBLayout xkblayout = new XKBLayout(config);
+        stdout.printf ("layout: %s\n", xkblayout.get_layout());
+        stdout.printf ("variant: %s\n", xkblayout.get_variant());
+        stdout.printf ("option: %s\n", xkblayout.get_option());
+        xkblayout.set_layout("jp");
+        if (config != null) {
+            IBus.main();
+        } else {
+            Gtk.init (ref args);
+            Gtk.main();
+        }
+        return 0;
+    }
+    */
+}
-- 
1.8.0