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File gtk3-1.4.11.diff of Package scim (Revision c3ff97ec65371811e820a9b95e3707ce)

Currently displaying revision c3ff97ec65371811e820a9b95e3707ce , Show latest

diff -urN scim-1.4.11.orig/configure.ac scim-1.4.11/configure.ac
--- scim-1.4.11.orig/configure.ac	2011-08-07 14:10:42.000000000 +0800
+++ scim-1.4.11/configure.ac	2011-09-11 02:13:56.864344424 +0800
@@ -220,6 +220,10 @@
 			[SCIM_HAS_GTK2=yes],
 			[SCIM_HAS_GTK2=no])
 
+PKG_CHECK_MODULES(GTK3, [gtk+-3.0 >= 3.0.0 pango >= 1.1.0 gdk-pixbuf-2.0 >= 2.4.0],
+			[SCIM_HAS_GTK3=yes],
+			[SCIM_HAS_GTK3=no])
+
 SCIM_HAS_GTK2_2=no
 if test "$SCIM_HAS_GTK2" = "yes"; then
   if $PKG_CONFIG --exists "gtk+-2.0 >= 2.2" ; then
@@ -244,6 +248,11 @@
   AC_SUBST(GTK_BINARY_VERSION)
 fi
 
+if test "$SCIM_HAS_GTK3" = "yes"; then
+  GTK3_IM_MODULEDIR=$GTK_LIBDIR/gtk-3.0/immodules
+  AC_SUBST(GTK3_IM_MODULEDIR)
+fi
+
 # Check if we have gthread
 PKG_CHECK_MODULES(GTHREAD2,[gthread-2.0 >= 2.0.0],
 			[SCIM_HAS_GTHREAD2=yes],
@@ -265,6 +274,11 @@
 	    [Select gtk immodule dir]),
 	    GTK_IM_MODULEDIR=$with_gtk_im_module_dir)
 
+AC_ARG_WITH(gtk3-im-module-dir,
+	    AS_HELP_STRING([--with-gtk3-im-module-dir=dir], 
+	    [Select gtk3 immodule dir]),
+	    GTK3_IM_MODULEDIR=$with_gtk3_im_module_dir)
+
 AC_ARG_ENABLE(ld-version-script,
 	      [  --enable-ld-version-script Use ld version script to limit exported symbols], ,
        	      enable_ld_version_script=no)
@@ -313,6 +327,10 @@
 	      [  --disable-gtk2-immodule   Do not build GTK2 IMModule], , 
        	      enable_gtk2_immodule=yes)
 
+AC_ARG_ENABLE(gtk3-immodule,
+	      [  --disable-gtk3-immodule   Do not build GTK3 IMModule], , 
+       	      enable_gtk3_immodule=yes)
+
 AC_ARG_ENABLE(panel-gtk,
               [  --disable-panel-gtk       Do not build GTK2 Panel], , 
               enable_panel_gtk=check)
@@ -402,6 +420,13 @@
   enable_gtk2_immodule=no
 fi
 
+if test "$enable_gtk3_immodule" = "yes" -a "$SCIM_HAS_GTK3" = "yes"; then
+  SCIM_BUILD_GTK3_IMMODULE=1
+else
+  SCIM_BUILD_GTK3_IMMODULE=0
+  enable_gtk3_immodule=no
+fi
+
 if test "$enable_setup_ui" = "yes" -a "$SCIM_HAS_GTK2" = "yes"; then
   SCIM_BUILD_SCIM_SETUP=1
   AC_DEFINE(HAVE_SCIM_SETUP,1,[Have scim-setup program.])
@@ -466,6 +491,9 @@
 AM_CONDITIONAL(SCIM_BUILD_GTK2_IMMODULE,
 		[test "$enable_gtk2_immodule" = "yes"])
 
+AM_CONDITIONAL(SCIM_BUILD_GTK3_IMMODULE,
+		[test "$enable_gtk3_immodule" = "yes"])
+
 AM_CONDITIONAL(SCIM_BUILD_FILTER_SCTC,
 		[test "$enable_filter_sctc" = "yes"])
 
@@ -494,6 +522,7 @@
 AC_SUBST(SCIM_BUILD_IMENGINE_SOCKET)
 AC_SUBST(SCIM_BUILD_FILTER_SCTC)
 AC_SUBST(SCIM_BUILD_GTK2_IMMODULE)
+AC_SUBST(SCIM_BUILD_GTK3_IMMODULE)
 AC_SUBST(SCIM_BUILD_SCIM_SETUP)
 AC_SUBST(SCIM_BUILD_PANEL_GTK)
 AC_SUBST(SCIM_BUILD_GTK_UTILS)
@@ -545,6 +574,7 @@
 	 	 configs/Makefile
 		 extras/Makefile
 		 extras/gtk2_immodule/Makefile
+		 extras/gtk3_immodule/Makefile
 		 extras/setup/Makefile
 		 extras/setup/scim-setup
 		 extras/panel/Makefile
@@ -586,6 +616,9 @@
   GTK2 IMModule            $enable_gtk2_immodule
   GTK2 IMModule dir        $GTK_IM_MODULEDIR
 
+  GTK3 IMModule            $enable_gtk3_immodule
+  GTK3 IMModule dir        $GTK3_IM_MODULEDIR
+
   GUI Setup Utility        $enable_setup_ui
 
   GTK2 Panel GUI           $enable_panel_gtk
diff -urN scim-1.4.11.orig/extras/gtk3_immodule/gtkimcontextscim.cpp scim-1.4.11/extras/gtk3_immodule/gtkimcontextscim.cpp
--- scim-1.4.11.orig/extras/gtk3_immodule/gtkimcontextscim.cpp	1970-01-01 08:00:00.000000000 +0800
+++ scim-1.4.11/extras/gtk3_immodule/gtkimcontextscim.cpp	2011-09-11 02:14:10.492344295 +0800
@@ -0,0 +1,2429 @@
+/** @file gtkimcontextscim.cpp
+ *  @brief immodule for GTK3.
+ */
+
+/* 
+ * Smart Common Input Method
+ * 
+ * Copyright (c) 2002-2005 James Su <suzhe@tsinghua.org.cn>
+ *
+ *
+ * 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
+ *
+ * $Id: gtkimcontextscim.cpp,v 1.170.2.13 2007/06/16 06:23:38 suzhe Exp $
+ */
+
+#define Uses_SCIM_DEBUG
+#define Uses_SCIM_BACKEND
+#define Uses_SCIM_IMENGINE
+#define Uses_SCIM_IMENGINE_MODULE
+#define Uses_SCIM_CONFIG
+#define Uses_SCIM_CONFIG_MODULE
+#define Uses_SCIM_CONFIG_PATH
+#define Uses_SCIM_TRANSACTION
+#define Uses_SCIM_HOTKEY
+#define Uses_SCIM_PANEL_CLIENT
+#define Uses_C_STRING
+#define Uses_C_STDIO
+#define Uses_C_STDLIB
+#define Uses_STL_IOSTREAM
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <gtk/gtk.h>
+#include <gdk/gdk.h>
+#include <gdk/gdkkeysyms.h>
+
+#ifdef GDK_WINDOWING_X11 
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <X11/keysym.h>
+#include <gdk/gdkx.h>
+#endif
+
+#include "scim_private.h"
+#include "scim.h"
+
+#ifdef GDK_WINDOWING_X11 
+#include "scim_x11_utils.h"
+#endif
+
+#define SEND_EVENT_MASK 0x02
+
+using namespace scim;
+
+#include "gtkimcontextscim.h"
+
+#define GTK_TYPE_IM_CONTEXT_SCIM             _gtk_type_im_context_scim
+#define GTK_IM_CONTEXT_SCIM(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_IM_CONTEXT_SCIM, GtkIMContextSCIM))
+#define GTK_IM_CONTEXT_SCIM_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_IM_CONTEXT_SCIM, GtkIMContextSCIMClass))
+#define GTK_IS_IM_CONTEXT_SCIM(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_IM_CONTEXT_SCIM))
+#define GTK_IS_IM_CONTEXT_SCIM_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_IM_CONTEXT_SCIM))
+#define GTK_IM_CONTEXT_SCIM_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_IM_CONTEXT_SCIM, GtkIMContextSCIMClass))
+
+#ifndef SCIM_KEYBOARD_ICON_FILE
+  #define SCIM_KEYBOARD_ICON_FILE            (SCIM_ICONDIR "/keyboard.png")
+#endif
+
+#define SCIM_CONFIG_FRONTEND_GTK_IMMODULE_USE_KEY_SNOOPER  "/FrontEnd/GtkIMModule/UseKeySnooper"
+
+/* Typedef */
+struct _GtkIMContextSCIMImpl
+{
+    GtkIMContextSCIM        *parent;
+    IMEngineInstancePointer  si;
+    GdkWindow               *client_window;
+    WideString               preedit_string;
+    AttributeList            preedit_attrlist;
+    gint                     preedit_caret;
+    gint                     cursor_x;
+    gint                     cursor_y;
+    gboolean                 use_preedit;
+    bool                     is_on;
+    bool                     shared_si;
+    bool                     preedit_started;
+    bool                     preedit_updating;
+
+    GtkIMContextSCIMImpl    *next;
+};
+
+/* Input Context handling functions. */
+static GtkIMContextSCIMImpl * new_ic_impl               (GtkIMContextSCIM       *parent);
+static void                   delete_ic_impl            (GtkIMContextSCIMImpl   *impl);
+static void                   delete_all_ic_impl        ();
+
+static GtkIMContextSCIM     * find_ic                   (int                     siid);
+
+/* Methods declaration */
+static void     gtk_im_context_scim_class_init          (GtkIMContextSCIMClass  *klass,
+                                                         gpointer               *klass_data);
+static void     gtk_im_context_scim_init                (GtkIMContextSCIM       *context_scim,
+                                                         GtkIMContextSCIMClass  *klass);
+static void     gtk_im_context_scim_finalize            (GObject                *obj);
+static void     gtk_im_context_scim_finalize_partial    (GtkIMContextSCIM       *context_scim);
+static void     gtk_im_context_scim_set_client_window   (GtkIMContext           *context,
+                                                         GdkWindow              *client_window);
+static gboolean gtk_im_context_scim_filter_keypress     (GtkIMContext           *context,
+                                                         GdkEventKey            *key);
+static void     gtk_im_context_scim_reset               (GtkIMContext           *context);
+static void     gtk_im_context_scim_focus_in            (GtkIMContext           *context);
+static void     gtk_im_context_scim_focus_out           (GtkIMContext           *context);
+static void     gtk_im_context_scim_set_cursor_location (GtkIMContext           *context,
+                                                         GdkRectangle           *area);
+static void     gtk_im_context_scim_set_use_preedit     (GtkIMContext           *context,
+                                                         gboolean                use_preedit);
+static void     gtk_im_context_scim_get_preedit_string  (GtkIMContext           *context,
+                                                         gchar                 **str,
+                                                         PangoAttrList         **attrs,
+                                                         gint                   *cursor_pos);
+
+static gboolean gtk_scim_key_snooper                    (GtkWidget              *grab_widget,
+                                                         GdkEventKey            *event,
+                                                         gpointer                data);
+
+static void     gtk_im_slave_commit_cb                  (GtkIMContext           *context,
+                                                         const char             *str,
+                                                         GtkIMContextSCIM       *context_scim);
+static void     gtk_im_slave_preedit_changed_cb         (GtkIMContext           *context,
+                                                         GtkIMContextSCIM       *context_scim);
+static void     gtk_im_slave_preedit_start_cb           (GtkIMContext           *context,
+                                                         GtkIMContextSCIM       *context_scim);
+static void     gtk_im_slave_preedit_end_cb             (GtkIMContext           *context,
+                                                         GtkIMContextSCIM       *context_scim);
+
+/* private functions */
+static void     panel_slot_reload_config                (int                     context);
+static void     panel_slot_exit                         (int                     context);
+static void     panel_slot_update_lookup_table_page_size(int                     context,
+                                                         int                     page_size);
+static void     panel_slot_lookup_table_page_up         (int                     context);
+static void     panel_slot_lookup_table_page_down       (int                     context);
+static void     panel_slot_trigger_property             (int                     context,
+                                                         const String           &property);
+static void     panel_slot_process_helper_event         (int                     context,
+                                                         const String           &target_uuid,
+                                                         const String           &helper_uuid,
+                                                         const Transaction      &trans);
+static void     panel_slot_move_preedit_caret           (int                     context,
+                                                         int                     caret_pos);
+static void     panel_slot_select_candidate             (int                     context,
+                                                         int                     cand_index);
+static void     panel_slot_process_key_event            (int                     context,
+                                                         const KeyEvent         &key);
+static void     panel_slot_commit_string                (int                     context,
+                                                         const WideString       &wstr);
+static void     panel_slot_forward_key_event            (int                     context,
+                                                         const KeyEvent         &key);
+static void     panel_slot_request_help                 (int                     context);
+static void     panel_slot_request_factory_menu         (int                     context);
+static void     panel_slot_change_factory               (int                     context,
+                                                         const String           &uuid);
+
+static void     panel_req_focus_in                      (GtkIMContextSCIM       *ic);
+static void     panel_req_update_screen                 (GtkIMContextSCIM       *ic);
+static void     panel_req_update_factory_info           (GtkIMContextSCIM       *ic);
+static void     panel_req_update_spot_location          (GtkIMContextSCIM       *ic);
+static void     panel_req_show_help                     (GtkIMContextSCIM       *ic);
+static void     panel_req_show_factory_menu             (GtkIMContextSCIM       *ic);
+
+/* Panel iochannel handler*/
+static bool     panel_initialize                        ();
+static void     panel_finalize                          ();
+static gboolean panel_iochannel_handler                 (GIOChannel             *source,
+                                                         GIOCondition            condition,
+                                                         gpointer                user_data);
+
+/* utility functions */
+static bool     filter_hotkeys                          (GtkIMContextSCIM       *ic,
+                                                         const KeyEvent         &key);
+static void     turn_on_ic                              (GtkIMContextSCIM       *ic);
+static void     turn_off_ic                             (GtkIMContextSCIM       *ic);
+
+static void     set_ic_capabilities                     (GtkIMContextSCIM       *ic);
+
+static KeyEvent keyevent_gdk_to_scim                    (const GtkIMContextSCIM *ic,
+                                                         const GdkEventKey      &gdkevent);
+
+static GdkEventKey keyevent_scim_to_gdk                 (const GtkIMContextSCIM *ic,
+                                                         const KeyEvent         &scimkey);
+
+static void     initialize                              (void);
+
+static void     finalize                                (void);
+
+static void     open_next_factory                       (GtkIMContextSCIM       *ic);
+static void     open_previous_factory                   (GtkIMContextSCIM       *ic);
+static void     open_specific_factory                   (GtkIMContextSCIM       *ic,
+                                                         const String           &uuid);
+
+static void     attach_instance                         (const IMEngineInstancePointer &si);
+
+static IMEngineInstancePointer get_default_instance     ();
+
+/* slot functions */
+static void     slot_show_preedit_string                (IMEngineInstanceBase   *si);
+static void     slot_show_aux_string                    (IMEngineInstanceBase   *si);
+static void     slot_show_lookup_table                  (IMEngineInstanceBase   *si);
+
+static void     slot_hide_preedit_string                (IMEngineInstanceBase   *si);
+static void     slot_hide_aux_string                    (IMEngineInstanceBase   *si);
+static void     slot_hide_lookup_table                  (IMEngineInstanceBase   *si);
+
+static void     slot_update_preedit_caret               (IMEngineInstanceBase   *si,
+                                                         int                     caret);
+static void     slot_update_preedit_string              (IMEngineInstanceBase   *si,
+                                                         const WideString       &str,
+                                                         const AttributeList    &attrs);
+static void     slot_update_aux_string                  (IMEngineInstanceBase   *si,
+                                                         const WideString       &str,
+                                                         const AttributeList    &attrs);
+static void     slot_commit_string                      (IMEngineInstanceBase   *si,
+                                                         const WideString       &str);
+static void     slot_forward_key_event                  (IMEngineInstanceBase   *si,
+                                                         const KeyEvent         &key);
+static void     slot_update_lookup_table                (IMEngineInstanceBase   *si,
+                                                         const LookupTable      &table);
+
+static void     slot_register_properties                (IMEngineInstanceBase   *si,
+                                                         const PropertyList     &properties);
+static void     slot_update_property                    (IMEngineInstanceBase   *si,
+                                                         const Property         &property);
+static void     slot_beep                               (IMEngineInstanceBase   *si);
+static void     slot_start_helper                       (IMEngineInstanceBase   *si,
+                                                         const String           &helper_uuid);
+static void     slot_stop_helper                        (IMEngineInstanceBase   *si,
+                                                         const String           &helper_uuid);
+static void     slot_send_helper_event                  (IMEngineInstanceBase   *si,
+                                                         const String           &helper_uuid,
+                                                         const Transaction      &trans);
+static bool     slot_get_surrounding_text               (IMEngineInstanceBase   *si,
+                                                         WideString             &text,
+                                                         int                    &cursor,
+                                                         int                     maxlen_before,
+                                                         int                     maxlen_after);
+static bool     slot_delete_surrounding_text            (IMEngineInstanceBase   *si,
+                                                         int                     offset,
+                                                         int                     len);
+
+static void     reload_config_callback                  (const ConfigPointer    &config);
+
+static void     fallback_commit_string_cb               (IMEngineInstanceBase   *si,
+                                                         const WideString       &str);
+
+
+
+
+/* Local variables declaration */
+static String                                           _language;
+static GtkIMContextSCIMImpl                            *_used_ic_impl_list          = 0;
+static GtkIMContextSCIMImpl                            *_free_ic_impl_list          = 0;
+
+static GType                                            _gtk_type_im_context_scim   = 0;
+static GObjectClass                                    *_parent_klass               = 0;
+
+static KeyboardLayout                                   _keyboard_layout            = SCIM_KEYBOARD_Default;
+static int                                              _valid_key_mask             = SCIM_KEY_AllMasks;
+
+static FrontEndHotkeyMatcher                            _frontend_hotkey_matcher;
+static IMEngineHotkeyMatcher                            _imengine_hotkey_matcher;
+
+static IMEngineInstancePointer                          _default_instance;
+
+static ConfigModule                                    *_config_module              = 0;
+static ConfigPointer                                    _config;
+static BackEndPointer                                   _backend;
+
+static GtkIMContextSCIM                                *_focused_ic                 = 0;
+static GtkWidget                                       *_focused_widget             = 0;
+
+static bool                                             _scim_initialized           = false;
+
+static GdkColor                                         _normal_bg;
+static GdkColor                                         _normal_text;
+static GdkColor                                         _active_bg;
+static GdkColor                                         _active_text;
+
+static gint                                             _snooper_id                 = 0;
+static bool                                             _snooper_installed          = false;
+
+static int                                              _instance_count             = 0;
+static int                                              _context_count              = 0;
+
+static IMEngineFactoryPointer                           _fallback_factory;
+static IMEngineInstancePointer                          _fallback_instance;
+
+static PanelClient                                      _panel_client;
+
+static GIOChannel                                      *_panel_iochannel            = 0;
+static guint                                            _panel_iochannel_read_source= 0;
+static guint                                            _panel_iochannel_err_source = 0;
+static guint                                            _panel_iochannel_hup_source = 0;
+
+static bool                                             _on_the_spot                = true;
+static bool                                             _shared_input_method        = false;
+static bool                                             _use_key_snooper            = false;
+
+// A hack to shutdown the immodule cleanly even if im_module_exit () is not called when exiting.
+class FinalizeHandler
+{
+public:
+    FinalizeHandler () {
+        SCIM_DEBUG_FRONTEND(1) << "FinalizeHandler::FinalizeHandler ()\n";
+    }
+    ~FinalizeHandler () {
+        SCIM_DEBUG_FRONTEND(1) << "FinalizeHandler::~FinalizeHandler ()\n";
+        gtk_im_context_scim_shutdown ();
+    }
+};
+
+static FinalizeHandler                                  _finalize_handler;
+
+/* Function Implementations */
+
+static GtkIMContextSCIMImpl *
+new_ic_impl (GtkIMContextSCIM *parent)
+{
+    GtkIMContextSCIMImpl *impl;
+
+    if (_free_ic_impl_list != NULL) {
+        impl = _free_ic_impl_list;
+        _free_ic_impl_list = _free_ic_impl_list->next;
+    } else {
+        impl = new GtkIMContextSCIMImpl;
+    }
+
+    impl->next = _used_ic_impl_list;
+    _used_ic_impl_list = impl;
+
+    impl->parent = parent;
+
+    return impl;
+}
+
+static void
+delete_ic_impl (GtkIMContextSCIMImpl   *impl)
+{
+    GtkIMContextSCIMImpl *rec, *last = 0;
+
+    for (rec = _used_ic_impl_list; rec != 0; last = rec, rec = rec->next) {
+        if (rec == impl) {
+            if (last != 0)
+                last->next = rec->next;
+            else
+                _used_ic_impl_list = rec->next;
+
+            rec->next = _free_ic_impl_list;
+            _free_ic_impl_list = rec;
+
+            rec->parent = 0;
+            rec->si.reset ();
+            rec->client_window = 0;
+            rec->preedit_string = WideString ();
+            rec->preedit_attrlist.clear ();
+
+            return;
+        }
+    }
+}
+
+
+static void
+delete_all_ic_impl ()
+{
+    GtkIMContextSCIMImpl *it;
+
+    it = _used_ic_impl_list;
+    while (it != 0) {
+        _used_ic_impl_list = it->next;
+        delete it;
+        it = _used_ic_impl_list;
+    }
+
+    it = _free_ic_impl_list;
+    while (it != 0) {
+        _free_ic_impl_list = it->next;
+        delete it;
+        it = _free_ic_impl_list;
+    }
+}
+
+static GtkIMContextSCIM *
+find_ic (int id)
+{
+    GtkIMContextSCIMImpl *rec = _used_ic_impl_list;
+ 
+    while (rec != 0) {
+        if (rec->parent && rec->parent->id == id)
+            return rec->parent;
+        rec = rec->next;
+    }
+
+    return 0;
+}
+
+
+/* Public functions */
+GtkIMContext *
+gtk_im_context_scim_new (void)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_new...\n";
+
+    GtkIMContextSCIM *result;
+ 
+    result = GTK_IM_CONTEXT_SCIM (g_object_new (GTK_TYPE_IM_CONTEXT_SCIM, NULL));
+
+    return GTK_IM_CONTEXT (result);
+}
+
+void
+gtk_im_context_scim_register_type (GTypeModule *type_module)
+{
+    static const GTypeInfo im_context_scim_info =
+    {
+        sizeof               (GtkIMContextSCIMClass),
+        (GBaseInitFunc)       NULL,
+        (GBaseFinalizeFunc)   NULL,
+        (GClassInitFunc)      gtk_im_context_scim_class_init,
+        NULL,                 /* class_finalize */
+        NULL,                 /* class_data */
+        sizeof               (GtkIMContextSCIM),
+        0,
+        (GInstanceInitFunc)  gtk_im_context_scim_init,
+    };
+
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_register_type...\n";
+
+    if (!_gtk_type_im_context_scim) {
+        _gtk_type_im_context_scim = 
+            g_type_module_register_type (type_module,
+                                     GTK_TYPE_IM_CONTEXT,
+                                     "GtkIMContextSCIM",
+                                     &im_context_scim_info,
+                                     (GTypeFlags) 0);
+    }
+}
+
+void
+gtk_im_context_scim_shutdown (void)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_shutdown...\n";
+
+    if (_scim_initialized) {
+        SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_shutdown: call finalize ()...\n";
+        finalize ();
+        _scim_initialized = false;
+    }
+}
+
+/* Private functions */
+static void
+gtk_im_context_scim_class_init (GtkIMContextSCIMClass *klass,
+                                gpointer              *klass_data)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_class_init...\n";
+
+    GtkIMContextClass *im_context_klass = GTK_IM_CONTEXT_CLASS (klass);
+    GObjectClass      *gobject_klass    = G_OBJECT_CLASS (klass);
+
+    _parent_klass = (GObjectClass *) g_type_class_peek_parent (klass);
+
+    im_context_klass->set_client_window   = gtk_im_context_scim_set_client_window;
+    im_context_klass->filter_keypress     = gtk_im_context_scim_filter_keypress;
+    im_context_klass->reset               = gtk_im_context_scim_reset;
+    im_context_klass->get_preedit_string  = gtk_im_context_scim_get_preedit_string;
+    im_context_klass->focus_in            = gtk_im_context_scim_focus_in;
+    im_context_klass->focus_out           = gtk_im_context_scim_focus_out;
+    im_context_klass->set_cursor_location = gtk_im_context_scim_set_cursor_location;
+    im_context_klass->set_use_preedit     = gtk_im_context_scim_set_use_preedit;
+    gobject_klass->finalize               = gtk_im_context_scim_finalize;
+
+    if (!_scim_initialized) {
+        initialize ();
+        _scim_initialized = true;
+    }
+}
+
+static void
+gtk_im_context_scim_init (GtkIMContextSCIM      *context_scim,
+                          GtkIMContextSCIMClass *klass)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_init...\n";
+
+    context_scim->impl = NULL;
+
+    /* slave exists for using gtk+'s table based input method */
+    context_scim->slave_preedit = false;
+    context_scim->slave = gtk_im_context_simple_new ();
+    g_signal_connect(G_OBJECT(context_scim->slave),
+                     "commit",
+                     G_CALLBACK(gtk_im_slave_commit_cb),
+                     context_scim);
+    
+    g_signal_connect(G_OBJECT(context_scim->slave),
+                     "preedit-changed",
+                     G_CALLBACK(gtk_im_slave_preedit_changed_cb),
+                     context_scim);
+    
+    g_signal_connect(G_OBJECT(context_scim->slave),
+                     "preedit-start",
+                     G_CALLBACK(gtk_im_slave_preedit_start_cb),
+                     context_scim);
+    
+    g_signal_connect(G_OBJECT(context_scim->slave),
+                     "preedit-end",
+                     G_CALLBACK(gtk_im_slave_preedit_end_cb),
+                     context_scim);
+
+
+
+
+    if (_backend.null ()) return;
+
+    IMEngineInstancePointer si;
+
+    // Use the default instance if "shared input method" mode is enabled.
+    if (_shared_input_method && !_default_instance.null ()) {
+        si = _default_instance;
+        SCIM_DEBUG_FRONTEND(2) << "use default instance: " << si->get_id () << " " << si->get_factory_uuid () << "\n";
+    }
+
+    // Not in "shared input method" mode, or no default instance, create an instance.
+    if (si.null ()) {
+        IMEngineFactoryPointer factory = _backend->get_default_factory (_language, "UTF-8");
+        if (factory.null ()) return;
+        si = factory->create_instance ("UTF-8", _instance_count++);
+        if (si.null ()) return;
+        attach_instance (si);
+        SCIM_DEBUG_FRONTEND(2) << "create new instance: " << si->get_id () << " " << si->get_factory_uuid () << "\n";
+    }
+
+    // If "shared input method" mode is enabled, and there is no default instance,
+    // then store this instance as default one.
+    if (_shared_input_method && _default_instance.null ()) {
+        SCIM_DEBUG_FRONTEND(2) << "update default instance.\n";
+        _default_instance = si;
+    }
+
+    context_scim->impl = new_ic_impl (context_scim);
+
+    context_scim->impl->si = si;
+    context_scim->impl->client_window = NULL;
+    context_scim->impl->preedit_caret = 0;
+    context_scim->impl->cursor_x = 0;
+    context_scim->impl->cursor_y = 0;
+    context_scim->impl->is_on = FALSE;
+    context_scim->impl->shared_si = _shared_input_method;
+    context_scim->impl->use_preedit = _on_the_spot;
+    context_scim->impl->preedit_started = false;
+    context_scim->impl->preedit_updating = false;
+
+    context_scim->id = _context_count++;
+
+    if (_shared_input_method)
+        context_scim->impl->is_on = _config->read (String (SCIM_CONFIG_FRONTEND_IM_OPENED_BY_DEFAULT), context_scim->impl->is_on);
+
+    _panel_client.prepare (context_scim->id);
+    _panel_client.register_input_context (context_scim->id, si->get_factory_uuid ());
+    set_ic_capabilities (context_scim);
+    _panel_client.send ();
+
+    SCIM_DEBUG_FRONTEND(2) << "input context created: id = " << context_scim->id << "\n";
+}
+
+static void
+gtk_im_context_scim_finalize_partial (GtkIMContextSCIM *context_scim)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_finalize_partial id=" << context_scim->id << "\n";
+
+    if (context_scim->impl) {
+        _panel_client.prepare (context_scim->id);
+
+        if (context_scim == _focused_ic)
+            context_scim->impl->si->focus_out ();
+ 
+        // Delete the instance.
+        // FIXME:
+        // In case the instance send out some helper event,
+        // and this context has been focused out,
+        // we need set the focused_ic to this context temporary.
+        GtkIMContextSCIM *old_focused = _focused_ic;
+        _focused_ic = context_scim;
+        context_scim->impl->si.reset ();
+        _focused_ic = old_focused;
+
+        if (context_scim == _focused_ic) {
+            _panel_client.turn_off (context_scim->id);
+            _panel_client.focus_out (context_scim->id);
+        }
+
+        _panel_client.remove_input_context (context_scim->id);
+        _panel_client.send ();
+
+        if (context_scim->impl->client_window)
+            g_object_unref (context_scim->impl->client_window);
+
+        delete_ic_impl (context_scim->impl);
+
+        context_scim->impl = 0;
+    }
+
+    if (context_scim == _focused_ic)
+        _focused_ic = 0;
+}
+
+static void
+gtk_im_context_scim_finalize (GObject *obj)
+{
+    GtkIMContextSCIM *context_scim = GTK_IM_CONTEXT_SCIM (obj);
+
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_finalize id=" << context_scim->id << "\n";
+
+    g_signal_handlers_disconnect_by_func(context_scim->slave,
+                                         (void *)gtk_im_slave_commit_cb,
+                                         (void *)context_scim);
+    g_signal_handlers_disconnect_by_func(context_scim->slave,
+                                         (void *)gtk_im_slave_preedit_changed_cb,
+                                         (void *)context_scim);
+    g_signal_handlers_disconnect_by_func(context_scim->slave,
+                                         (void *)gtk_im_slave_preedit_start_cb,
+                                         (void *)context_scim);
+    g_signal_handlers_disconnect_by_func(context_scim->slave,
+                                         (void *)gtk_im_slave_preedit_end_cb,
+                                         (void *)context_scim);
+    g_object_unref(context_scim->slave);
+
+    gtk_im_context_scim_finalize_partial (context_scim);
+
+    _parent_klass->finalize (obj);
+}
+
+static void
+gtk_im_context_scim_set_client_window (GtkIMContext *context,
+                                       GdkWindow    *client_window)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_set_client_window...\n";
+
+    GtkIMContextSCIM *context_scim = GTK_IM_CONTEXT_SCIM (context);
+
+    if (context_scim && context_scim->impl) {
+        if (client_window)
+            g_object_ref (client_window);
+
+        if (context_scim->impl->client_window)
+            g_object_unref (context_scim->impl->client_window);
+
+        context_scim->impl->client_window = client_window;
+    }
+}
+
+static gboolean
+gtk_im_context_scim_filter_keypress (GtkIMContext *context,
+                                     GdkEventKey  *event)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_filter_keypress...\n";
+
+    GtkIMContextSCIM *context_scim = GTK_IM_CONTEXT_SCIM (context);
+
+    gboolean ret = FALSE;
+
+    if (context_scim) {
+        if (!_snooper_installed)
+            ret = gtk_scim_key_snooper (0, event, 0);
+
+        if (context_scim->slave) {
+            if (!ret ) {
+                ret = gtk_im_context_filter_keypress (context_scim->slave, event);
+            }
+            else if (context_scim->slave_preedit) {
+                context_scim->slave_preedit = false;
+                gtk_im_context_reset (context_scim->slave);
+            }
+        }
+    }
+
+    return ret;
+}
+
+static void
+gtk_im_context_scim_reset (GtkIMContext *context)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_reset...\n";
+
+    GtkIMContextSCIM *context_scim = GTK_IM_CONTEXT_SCIM (context);
+
+    if (context_scim && context_scim->impl && context_scim == _focused_ic) {
+        _panel_client.prepare (context_scim->id);
+        context_scim->impl->si->reset ();
+        _panel_client.send ();
+    }
+}
+
+static void
+gtk_im_context_scim_focus_in (GtkIMContext *context)
+{
+    GtkIMContextSCIM *context_scim = GTK_IM_CONTEXT_SCIM (context);
+
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_focus_in(" << context_scim->id << ")...\n";
+
+    if (_focused_ic) {
+        if (_focused_ic == context_scim) {
+            SCIM_DEBUG_FRONTEND(1) << "It's already focused.\n";
+            return;
+        }
+        SCIM_DEBUG_FRONTEND(1) << "Focus out previous IC first: " << _focused_ic->id << "\n";
+        gtk_im_context_scim_focus_out (GTK_IM_CONTEXT (_focused_ic));
+    }
+
+    // Only use key snooper when use_key_snooper option is enabled and a gtk main loop is running.
+    if (_use_key_snooper && !_snooper_installed && gtk_main_level () > 0) {
+        SCIM_DEBUG_FRONTEND(2) << "Install key snooper.\n";
+        _snooper_id = gtk_key_snooper_install ((GtkKeySnoopFunc)gtk_scim_key_snooper, NULL);
+        _snooper_installed = true;
+    }
+
+    bool need_cap = false;
+    bool need_reset = false;
+    bool need_reg = false;
+
+    if (context_scim && context_scim->impl) {
+        _focused_ic = context_scim;
+        _panel_client.prepare (context_scim->id);
+
+        // Handle the "Shared Input Method" mode.
+        if (_shared_input_method) {
+            SCIM_DEBUG_FRONTEND(2) << "shared input method.\n";
+            IMEngineFactoryPointer factory = _backend->get_default_factory (_language, "UTF-8");
+            if (!factory.null ()) {
+                if (_default_instance.null () || _default_instance->get_factory_uuid () != factory->get_uuid ()) {
+                    _default_instance = factory->create_instance ("UTF-8", _default_instance.null () ? _instance_count++ : _default_instance->get_id ());
+                    attach_instance (_default_instance);
+                    SCIM_DEBUG_FRONTEND(2) << "create new default instance: " << _default_instance->get_id () << " " << _default_instance->get_factory_uuid () << "\n";
+                }
+
+                context_scim->impl->shared_si = true;
+                context_scim->impl->si = _default_instance;
+
+                context_scim->impl->is_on = _config->read (String (SCIM_CONFIG_FRONTEND_IM_OPENED_BY_DEFAULT), context_scim->impl->is_on);
+                context_scim->impl->preedit_string.clear ();
+                context_scim->impl->preedit_attrlist.clear ();
+                context_scim->impl->preedit_caret = 0;
+                context_scim->impl->preedit_started = false;
+                need_cap = true;
+                need_reset = true;
+                need_reg = true;
+            }
+        } else if (context_scim->impl->shared_si) {
+            SCIM_DEBUG_FRONTEND(2) << "exit shared input method.\n";
+            IMEngineFactoryPointer factory = _backend->get_default_factory (_language, "UTF-8");
+            if (!factory.null ()) {
+                context_scim->impl->si = factory->create_instance ("UTF-8", _instance_count++);
+                context_scim->impl->preedit_string.clear ();
+                context_scim->impl->preedit_attrlist.clear ();
+                context_scim->impl->preedit_caret = 0;
+                context_scim->impl->preedit_started = false;
+                attach_instance (context_scim->impl->si);
+                need_cap = true;
+                need_reg = true;
+                context_scim->impl->shared_si = false;
+                SCIM_DEBUG_FRONTEND(2) << "create new instance: " << context_scim->impl->si->get_id () << " " << context_scim->impl->si->get_factory_uuid () << "\n";
+            }
+        }
+
+        context_scim->impl->si->set_frontend_data (static_cast <void*> (context_scim));
+
+        if (need_reg) _panel_client.register_input_context (context_scim->id, context_scim->impl->si->get_factory_uuid ());
+        if (need_cap) set_ic_capabilities (context_scim);
+        if (need_reset) context_scim->impl->si->reset ();
+
+        panel_req_focus_in (context_scim);
+        panel_req_update_screen (context_scim);
+        panel_req_update_spot_location (context_scim);
+        panel_req_update_factory_info (context_scim);
+
+        if (context_scim->impl->is_on) {
+            _panel_client.turn_on (context_scim->id);
+            _panel_client.hide_preedit_string (context_scim->id);
+            _panel_client.hide_aux_string (context_scim->id);
+            _panel_client.hide_lookup_table (context_scim->id);
+            context_scim->impl->si->focus_in ();
+        } else {
+            _panel_client.turn_off (context_scim->id);
+        }
+
+        _panel_client.send ();
+    }
+}
+
+static void
+gtk_im_context_scim_focus_out (GtkIMContext *context)
+{
+    GtkIMContextSCIM *context_scim = GTK_IM_CONTEXT_SCIM (context);
+
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_focus_out(" << context_scim->id << ")...\n";
+
+    if (_snooper_installed) {
+        SCIM_DEBUG_FRONTEND(2) << "Remove key snooper.\n";
+        gtk_key_snooper_remove (_snooper_id);
+        _snooper_installed = false;
+    }
+
+    if (context_scim && context_scim->impl && context_scim == _focused_ic) {
+        _panel_client.prepare (context_scim->id);
+        context_scim->impl->si->focus_out ();
+        if (context_scim->impl->shared_si) context_scim->impl->si->reset ();
+        _panel_client.turn_off (context_scim->id);
+        _panel_client.focus_out (context_scim->id);
+        _panel_client.send ();
+        _focused_ic = 0;
+    }
+}
+
+static void
+gtk_im_context_scim_set_cursor_location (GtkIMContext *context,
+                                         GdkRectangle *area)
+{
+    SCIM_DEBUG_FRONTEND(4) << "gtk_im_context_scim_set_cursor_location...\n";
+
+    gint x, y;
+    GtkIMContextSCIM *context_scim = GTK_IM_CONTEXT_SCIM (context);
+ 
+    if (context_scim && context_scim->impl && context_scim->impl->client_window && context_scim == _focused_ic) {
+        // Don't update spot location while updating preedit string.
+        if (context_scim->impl->preedit_updating)
+            return;
+
+        gdk_window_get_origin(context_scim->impl->client_window, &x, &y);
+        if (context_scim->impl->cursor_x != x + area->x + area->width ||
+            context_scim->impl->cursor_y != y + area->y + area->height + 8) {
+            context_scim->impl->cursor_x = x + area->x + area->width;
+            context_scim->impl->cursor_y = y + area->y + area->height + 8;
+            _panel_client.prepare (context_scim->id);
+            panel_req_update_spot_location (context_scim);
+            _panel_client.send ();
+            SCIM_DEBUG_FRONTEND(2) << "new cursor location = " << context_scim->impl->cursor_x << "," << context_scim->impl->cursor_y << "\n";
+        } 
+    }
+}
+
+static void
+gtk_im_context_scim_set_use_preedit (GtkIMContext *context,
+                                     gboolean      use_preedit)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_set_use_preedit = " << (use_preedit ? "true" : "false") << "...\n";
+
+    GtkIMContextSCIM *context_scim = GTK_IM_CONTEXT_SCIM (context);
+
+    if (!_on_the_spot) return;
+
+    if (context_scim && context_scim->impl) {
+        bool old = context_scim->impl->use_preedit;
+        context_scim->impl->use_preedit = use_preedit;
+        if (context_scim == _focused_ic) {
+            _panel_client.prepare (context_scim->id);
+
+            if (old != use_preedit)
+                set_ic_capabilities (context_scim);
+
+            if (context_scim->impl->preedit_string.length ()) 
+                slot_show_preedit_string (context_scim->impl->si);
+
+            _panel_client.send ();
+        }
+    }
+}
+
+static void
+gtk_im_context_scim_get_preedit_string (GtkIMContext   *context,
+                                        gchar         **str,
+                                        PangoAttrList **attrs,
+                                        gint           *cursor_pos)
+{
+    SCIM_DEBUG_FRONTEND(1) << "gtk_im_context_scim_get_preedit_string...\n";
+
+    GtkIMContextSCIM *context_scim = GTK_IM_CONTEXT_SCIM (context);
+    
+    if (context_scim->slave_preedit == true) {
+        gtk_im_context_get_preedit_string (context_scim->slave, str, attrs, cursor_pos);
+        return;
+    }
+
+    if (context_scim && context_scim->impl && context_scim->impl->is_on) {
+        String mbs = utf8_wcstombs (context_scim->impl->preedit_string);
+
+        if (str) {
+            if (mbs.length ())
+                *str = g_strdup (mbs.c_str ());
+            else
+                *str = g_strdup ("");
+        }
+
+        if (cursor_pos) {
+            *cursor_pos = context_scim->impl->preedit_caret;
+        }
+
+        if (attrs) {
+            *attrs = pango_attr_list_new ();
+
+            if (mbs.length ()) {
+                guint start_index, end_index;
+                guint wlen = context_scim->impl->preedit_string.length ();
+
+                PangoAttribute *attr;
+                AttributeList::const_iterator i;
+                bool underline = false;
+                bool *attrs_flag = new bool [mbs.length ()];
+
+                memset (attrs_flag, 0, mbs.length () * sizeof (bool));
+
+                for (i = context_scim->impl->preedit_attrlist.begin ();
+                     i != context_scim->impl->preedit_attrlist.end (); ++i) {
+                    start_index = i->get_start ();
+                    end_index = i->get_end ();
+
+                    if (end_index <= wlen && start_index < end_index && i->get_type () != SCIM_ATTR_DECORATE_NONE) {
+                        start_index = g_utf8_offset_to_pointer (mbs.c_str (), i->get_start ()) - mbs.c_str ();
+                        end_index = g_utf8_offset_to_pointer (mbs.c_str (), i->get_end ()) - mbs.c_str ();
+
+                        if (i->get_type () == SCIM_ATTR_DECORATE) {
+                            if (i->get_value () == scim::SCIM_ATTR_DECORATE_UNDERLINE) {
+                                attr = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
+                                attr->start_index = start_index;
+                                attr->end_index = end_index;
+                                pango_attr_list_insert (*attrs, attr);
+                                underline = true;
+                            } else if (i->get_value () == SCIM_ATTR_DECORATE_REVERSE) {
+                                attr = pango_attr_foreground_new (_normal_bg.red, _normal_bg.green, _normal_bg.blue);
+                                attr->start_index = start_index;
+                                attr->end_index = end_index;
+                                pango_attr_list_insert (*attrs, attr);
+   
+                                attr = pango_attr_background_new (_normal_text.red, _normal_text.green, _normal_text.blue);
+                                attr->start_index = start_index;
+                                attr->end_index = end_index;
+                                pango_attr_list_insert (*attrs, attr);
+                            } else if (i->get_value () == SCIM_ATTR_DECORATE_HIGHLIGHT) {
+                                attr = pango_attr_foreground_new (_active_text.red, _active_text.green, _active_text.blue);
+                                attr->start_index = start_index;
+                                attr->end_index = end_index;
+                                pango_attr_list_insert (*attrs, attr);
+   
+                                attr = pango_attr_background_new (_active_bg.red, _active_bg.green, _active_bg.blue);
+                                attr->start_index = start_index;
+                                attr->end_index = end_index;
+                                pango_attr_list_insert (*attrs, attr);
+                            }
+                        } else if (i->get_type () == SCIM_ATTR_FOREGROUND) {
+                            unsigned int color = i->get_value ();
+   
+                            attr = pango_attr_foreground_new (SCIM_RGB_COLOR_RED(color) * 256, SCIM_RGB_COLOR_GREEN(color) * 256, SCIM_RGB_COLOR_BLUE(color) * 256);
+                            attr->start_index = start_index;
+                            attr->end_index = end_index;
+                            pango_attr_list_insert (*attrs, attr);
+                        } else if (i->get_type () == SCIM_ATTR_BACKGROUND) {
+                            unsigned int color = i->get_value ();
+   
+                            attr = pango_attr_background_new (SCIM_RGB_COLOR_RED(color) * 256, SCIM_RGB_COLOR_GREEN(color) * 256, SCIM_RGB_COLOR_BLUE(color) * 256);
+                            attr->start_index = start_index;
+                            attr->end_index = end_index;
+                            pango_attr_list_insert (*attrs, attr);
+                        }
+
+                        // Record which character has attribute.
+                        for (guint pos = start_index; pos < end_index; ++pos)
+                            attrs_flag [pos] = 1;
+                    }
+                }
+
+                // Add underline for all characters which don't have attribute.
+                for (guint pos = 0; pos < mbs.length (); ++pos) {
+                    if (!attrs_flag [pos]) {
+                        guint begin_pos = pos;
+
+                        for (; pos < mbs.length () && !attrs_flag [pos]; ++pos)
+                            NULL;
+
+                        attr = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
+                        attr->start_index = begin_pos;
+                        attr->end_index = pos;
+                        pango_attr_list_insert (*attrs, attr);
+                    }
+                }
+            }
+        }
+    } else {
+        if (str)
+            *str = g_strdup ("");
+
+        if (cursor_pos)
+            *cursor_pos = 0;
+
+        if (attrs)
+            *attrs = pango_attr_list_new ();
+    }
+}
+
+static gboolean
+gtk_scim_key_snooper (GtkWidget    *grab_widget,
+                      GdkEventKey  *event,
+                      gpointer      data)
+{
+    SCIM_DEBUG_FRONTEND(3) << "gtk_scim_key_snooper...\n";
+
+    gboolean ret = FALSE;
+
+    if (_focused_ic && _focused_ic->impl && (event->type == GDK_KEY_PRESS || event->type == GDK_KEY_RELEASE) && !(event->send_event & SEND_EVENT_MASK)) {
+        _focused_widget = grab_widget;
+
+        KeyEvent key = keyevent_gdk_to_scim (_focused_ic, *event);
+
+        key.mask &= _valid_key_mask;
+
+        key.layout = _keyboard_layout;
+
+        _panel_client.prepare (_focused_ic->id);
+
+        if (!filter_hotkeys (_focused_ic, key)) {
+            if (!_focused_ic->impl->is_on || !_focused_ic->impl->si->process_key_event (key)) {
+                SCIM_DEBUG_FRONTEND(3) << "Failed to process: "
+                                       << (!_focused_ic->impl->is_on ? "IC is off" : "IC doesn't process")
+                                       << ".\n";
+                ret = _fallback_instance->process_key_event (key);
+            } else {
+                ret = TRUE;
+            }
+        } else {
+            ret = TRUE;
+        }
+
+        _panel_client.send ();
+
+        _focused_widget = 0;
+    } else {
+        SCIM_DEBUG_FRONTEND(3) << "Failed snooper: "
+                               << ((!_focused_ic || !_focused_ic->impl) ? "Invalid focused ic" :
+                                   ((event->send_event & SEND_EVENT_MASK) ? "send event is set" : "unknown"))
+                               << "\n";
+    }
+
+    return ret;
+}
+
+static void
+gtk_im_slave_commit_cb (GtkIMContext     *context,
+                        const char       *str,
+                        GtkIMContextSCIM *context_scim)
+{
+    g_return_if_fail(str);
+    g_signal_emit_by_name(context_scim, "commit", str);
+}
+
+static void
+gtk_im_slave_preedit_changed_cb (GtkIMContext     *context,
+                        GtkIMContextSCIM *context_scim)
+{
+    context_scim->slave_preedit = true;
+    g_signal_emit_by_name(context_scim, "preedit-changed");
+}
+
+static void
+gtk_im_slave_preedit_start_cb (GtkIMContext     *context,
+                        GtkIMContextSCIM *context_scim)
+{
+    context_scim->slave_preedit = true;
+    g_signal_emit_by_name(context_scim, "preedit-start");
+}
+
+static void
+gtk_im_slave_preedit_end_cb (GtkIMContext     *context,
+                        GtkIMContextSCIM *context_scim)
+{
+    context_scim->slave_preedit = false;
+    g_signal_emit_by_name(context_scim, "preedit-end");
+}
+
+/* Panel Slot functions */
+static void
+panel_slot_reload_config (int context)
+{
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_reload_config...\n";
+    _config->reload ();
+}
+
+static void
+panel_slot_exit (int /* context */)
+{
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_exit...\n";
+
+    finalize ();
+}
+
+static void
+panel_slot_update_lookup_table_page_size (int context, int page_size)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_update_lookup_table_page_size context=" << context << " page_size=" << page_size << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+        ic->impl->si->update_lookup_table_page_size (page_size);
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_lookup_table_page_up (int context)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_lookup_table_page_up context=" << context << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+        ic->impl->si->lookup_table_page_up ();
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_lookup_table_page_down (int context)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_lookup_table_page_down context=" << context << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+        ic->impl->si->lookup_table_page_down ();
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_trigger_property (int context, const String &property)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_trigger_property context=" << context << " property=" << property << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+        ic->impl->si->trigger_property (property);
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_process_helper_event (int context, const String &target_uuid, const String &helper_uuid, const Transaction &trans)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_process_helper_event context=" << context << " target=" << target_uuid
+                           << " helper=" << helper_uuid << " ic=" << ic << " ic->impl=" << (ic ? ic->impl : 0) << " ic-uuid="
+                           << ((ic && ic->impl) ? ic->impl->si->get_factory_uuid () : "" ) << "\n";
+    if (ic && ic->impl && ic->impl->si->get_factory_uuid () == target_uuid) {
+        _panel_client.prepare (ic->id);
+        SCIM_DEBUG_FRONTEND(2) << "call process_helper_event\n";
+        ic->impl->si->process_helper_event (helper_uuid, trans);
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_move_preedit_caret (int context, int caret_pos)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_move_preedit_caret context=" << context << " caret=" << caret_pos << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+        ic->impl->si->move_preedit_caret (caret_pos);
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_select_candidate (int context, int cand_index)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_select_candidate context=" << context << " candidate=" << cand_index << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+        ic->impl->si->select_candidate (cand_index);
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_process_key_event (int context, const KeyEvent &key)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_process_key_event context=" << context << " key=" << key.get_key_string () << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+
+        if (!filter_hotkeys (ic, key)) {
+            if (!_focused_ic || !_focused_ic->impl->is_on ||
+                !_focused_ic->impl->si->process_key_event (key)) {
+                if (!_fallback_instance->process_key_event (key)) {
+                    // Just send it to key_snooper and bypass to client directly (because send_event is set to TRUE).
+                    GdkEventKey gdkevent = keyevent_scim_to_gdk (ic, key);
+                    gdk_event_put ((GdkEvent *)&gdkevent);
+                }
+            }
+        }
+
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_commit_string (int context, const WideString &wstr)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_commit_string context=" << context << " str=" << utf8_wcstombs (wstr) << " ic=" << ic << "\n";
+    if (ic && ic->impl)
+        g_signal_emit_by_name (ic, "commit", utf8_wcstombs (wstr).c_str ());
+}
+
+static void
+panel_slot_forward_key_event (int context, const KeyEvent &key)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_forward_key_event context=" << context << " key=" << key.get_key_string () << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        // Just send it to key_snooper and bypass to client directly (because send_event is set to TRUE).
+        GdkEventKey gdkevent = keyevent_scim_to_gdk (ic, key);
+        gdk_event_put ((GdkEvent *)&gdkevent);
+    }
+}
+
+static void
+panel_slot_request_help (int context)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_request_help context=" << context << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+        panel_req_show_help (ic);
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_request_factory_menu (int context)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_request_factory_menu context=" << context << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+        panel_req_show_factory_menu (ic);
+        _panel_client.send ();
+    }
+}
+
+static void
+panel_slot_change_factory (int context, const String &uuid)
+{
+    GtkIMContextSCIM *ic = find_ic (context);
+    SCIM_DEBUG_FRONTEND(1) << "panel_slot_change_factory context=" << context << " factory=" << uuid << " ic=" << ic << "\n";
+    if (ic && ic->impl) {
+        _panel_client.prepare (ic->id);
+        open_specific_factory (ic, uuid);
+        _panel_client.send ();
+    }
+}
+
+
+/* Panel Requestion functions. */
+static void
+panel_req_update_screen (GtkIMContextSCIM *ic)
+{
+#if GDK_MULTIHEAD_SAFE
+    if (ic->impl->client_window) {
+        GdkScreen *screen = gdk_window_get_screen (ic->impl->client_window);
+        if (screen) {
+            int number = gdk_screen_get_number (screen);
+            _panel_client.update_screen (ic->id, number);
+        }
+    }
+#endif
+}
+
+static void
+panel_req_show_help (GtkIMContextSCIM *ic)
+{
+    String help;
+
+    help =  String (_("Smart Common Input Method platform ")) +
+            String (SCIM_VERSION) +
+            String (_("\n(C) 2002-2005 James Su <suzhe@tsinghua.org.cn>\n\n"));
+
+    if (ic && ic->impl) {
+        IMEngineFactoryPointer sf = _backend->get_factory (ic->impl->si->get_factory_uuid ());
+        help += utf8_wcstombs (sf->get_name ());
+        help += String (_(":\n\n"));
+
+        help += utf8_wcstombs (sf->get_authors ());
+        help += String (_("\n\n"));
+
+        help += utf8_wcstombs (sf->get_help ());
+        help += String (_("\n\n"));
+
+        help += utf8_wcstombs (sf->get_credits ());
+    }
+
+    _panel_client.show_help (ic->id, help);
+}
+
+static void
+panel_req_show_factory_menu (GtkIMContextSCIM *ic)
+{
+    std::vector<IMEngineFactoryPointer> factories;
+    std::vector <PanelFactoryInfo> menu;
+
+    _backend->get_factories_for_encoding (factories, "UTF-8");
+
+    for (size_t i = 0; i < factories.size (); ++ i) {
+        menu.push_back (PanelFactoryInfo (
+                                    factories [i]->get_uuid (),
+                                    utf8_wcstombs (factories [i]->get_name ()),
+                                    factories [i]->get_language (),
+                                    factories [i]->get_icon_file ()));
+    }
+
+    if (menu.size ())
+        _panel_client.show_factory_menu (ic->id, menu);
+}
+
+static void
+panel_req_update_factory_info (GtkIMContextSCIM *ic)
+{
+    if (ic && ic->impl && ic == _focused_ic) {
+        PanelFactoryInfo info;
+        if (ic->impl->is_on) {
+            IMEngineFactoryPointer sf = _backend->get_factory (ic->impl->si->get_factory_uuid ());
+            info = PanelFactoryInfo (sf->get_uuid (), utf8_wcstombs (sf->get_name ()), sf->get_language (), sf->get_icon_file ());
+        } else {
+            info = PanelFactoryInfo (String (""), String (_("English/Keyboard")), String ("C"), String (SCIM_KEYBOARD_ICON_FILE));
+        }
+        _panel_client.update_factory_info (ic->id, info);
+    }
+}
+
+static void
+panel_req_focus_in (GtkIMContextSCIM *ic)
+{
+    _panel_client.focus_in (ic->id, ic->impl->si->get_factory_uuid ());
+}
+
+static void
+panel_req_update_spot_location (GtkIMContextSCIM *ic)
+{
+    _panel_client.update_spot_location (ic->id, ic->impl->cursor_x, ic->impl->cursor_y);
+}
+
+
+static bool
+filter_hotkeys (GtkIMContextSCIM *ic, const KeyEvent &key)
+{
+    bool ret = false;
+
+    _frontend_hotkey_matcher.push_key_event (key);
+    _imengine_hotkey_matcher.push_key_event (key);
+
+    FrontEndHotkeyAction hotkey_action = _frontend_hotkey_matcher.get_match_result ();
+
+    if (hotkey_action == SCIM_FRONTEND_HOTKEY_TRIGGER) {
+        if (!ic->impl->is_on)
+            turn_on_ic (ic);
+        else
+            turn_off_ic (ic);
+        ret = true;
+    } else if (hotkey_action == SCIM_FRONTEND_HOTKEY_ON) {
+        if (!ic->impl->is_on)
+            turn_on_ic (ic);
+        ret = true;
+    } else if (hotkey_action == SCIM_FRONTEND_HOTKEY_OFF) {
+        if (ic->impl->is_on)
+            turn_off_ic (ic);
+        ret = true;
+    } else if (hotkey_action == SCIM_FRONTEND_HOTKEY_NEXT_FACTORY) {
+        open_next_factory (ic);
+        ret = true;
+    } else if (hotkey_action == SCIM_FRONTEND_HOTKEY_PREVIOUS_FACTORY) {
+        open_previous_factory (ic);
+        ret = true;
+    } else if (hotkey_action == SCIM_FRONTEND_HOTKEY_SHOW_FACTORY_MENU) {
+        panel_req_show_factory_menu (ic);
+        ret = true;
+    } else if (_imengine_hotkey_matcher.is_matched ()) {
+        String sfid = _imengine_hotkey_matcher.get_match_result ();
+        open_specific_factory (ic, sfid);
+        ret = true;
+    } 
+    return ret;
+}
+
+static bool
+panel_initialize ()
+{
+    String display_name;
+
+    {
+#if GDK_MULTIHEAD_SAFE
+        const char *p = gdk_display_get_name (gdk_display_get_default ());
+#else
+        const char *p = getenv ("DISPLAY");
+#endif
+        if (p) display_name = String (p);
+    }
+
+    SCIM_DEBUG_FRONTEND(1) << "panel_initialize..\n";
+
+    if (_panel_client.open_connection (_config->get_name (), display_name) >= 0) {
+        int fd = _panel_client.get_connection_number ();
+        _panel_iochannel = g_io_channel_unix_new (fd);
+
+        _panel_iochannel_read_source = g_io_add_watch (_panel_iochannel, G_IO_IN,  panel_iochannel_handler, 0);
+        _panel_iochannel_err_source  = g_io_add_watch (_panel_iochannel, G_IO_ERR, panel_iochannel_handler, 0);
+        _panel_iochannel_hup_source  = g_io_add_watch (_panel_iochannel, G_IO_HUP, panel_iochannel_handler, 0);
+
+        SCIM_DEBUG_FRONTEND(2) << " Panel FD= " << fd << "\n";
+
+        return true;
+    }
+    return false;
+}
+
+static void
+panel_finalize ()
+{
+    _panel_client.close_connection ();
+
+    if (_panel_iochannel) {
+        g_io_channel_unref (_panel_iochannel);
+        g_source_remove (_panel_iochannel_read_source);
+        g_source_remove (_panel_iochannel_err_source);
+        g_source_remove (_panel_iochannel_hup_source);
+        _panel_iochannel = 0;
+        _panel_iochannel_read_source = 0;
+        _panel_iochannel_err_source = 0;
+        _panel_iochannel_hup_source = 0;
+    }
+}
+
+static gboolean
+panel_iochannel_handler (GIOChannel *source, GIOCondition condition, gpointer user_data)
+{
+    if (condition == G_IO_IN) {
+        if (!_panel_client.filter_event ()) {
+            panel_finalize ();
+            panel_initialize ();
+            return FALSE;
+        }
+    } else if (condition == G_IO_ERR || condition == G_IO_HUP) {
+        panel_finalize ();
+        panel_initialize ();
+        return FALSE;
+    }
+    return TRUE;
+}
+
+static void
+turn_on_ic (GtkIMContextSCIM *ic)
+{
+    if (ic && ic->impl && !ic->impl->is_on) {
+        ic->impl->is_on = true;
+
+        if (ic == _focused_ic) {
+            panel_req_focus_in (ic);
+            panel_req_update_screen (ic);
+            panel_req_update_spot_location (ic);
+            panel_req_update_factory_info (ic);
+            _panel_client.turn_on (ic->id);
+            _panel_client.hide_preedit_string (ic->id);
+            _panel_client.hide_aux_string (ic->id);
+            _panel_client.hide_lookup_table (ic->id);
+            ic->impl->si->focus_in ();
+        }
+
+        //Record the IC on/off status
+        if (_shared_input_method)
+            _config->write (String (SCIM_CONFIG_FRONTEND_IM_OPENED_BY_DEFAULT), true);
+
+        if (ic->impl->use_preedit && ic->impl->preedit_string.length ()) {
+            g_signal_emit_by_name(ic, "preedit-start");
+            g_signal_emit_by_name(ic, "preedit-changed");
+            ic->impl->preedit_started = true;
+        }
+    }
+}
+
+static void
+turn_off_ic (GtkIMContextSCIM *ic)
+{
+    if (ic && ic->impl && ic->impl->is_on) {
+        ic->impl->is_on = false;
+
+        if (ic == _focused_ic) {
+            ic->impl->si->focus_out ();
+
+            panel_req_update_factory_info (ic);
+            _panel_client.turn_off (ic->id);
+        }
+
+        //Record the IC on/off status
+        if (_shared_input_method)
+            _config->write (String (SCIM_CONFIG_FRONTEND_IM_OPENED_BY_DEFAULT), false);
+
+        if (ic->impl->use_preedit && ic->impl->preedit_string.length ()) {
+            g_signal_emit_by_name(ic, "preedit-changed");
+            g_signal_emit_by_name(ic, "preedit-end");
+            ic->impl->preedit_started = false;
+        }
+    }
+}
+
+static void
+set_ic_capabilities (GtkIMContextSCIM *ic)
+{
+    if (ic && ic->impl) {
+        unsigned int cap = SCIM_CLIENT_CAP_ALL_CAPABILITIES;
+
+        if (!_on_the_spot || !ic->impl->use_preedit)
+            cap -= SCIM_CLIENT_CAP_ONTHESPOT_PREEDIT;
+
+        ic->impl->si->update_client_capabilities (cap);
+    }
+}
+
+static KeyEvent
+keyevent_gdk_to_scim (const GtkIMContextSCIM *ic, const GdkEventKey &gdkevent)
+{
+    KeyEvent key;
+
+    // Use Key Symbole provided by gtk.
+    key.code = gdkevent.keyval;
+
+#ifdef GDK_WINDOWING_X11 
+    Display *display = 0;
+
+    if (ic && ic->impl && ic->impl->client_window)
+        display = GDK_WINDOW_XDISPLAY (ic->impl->client_window);
+    else
+        display = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
+
+    key.mask = scim_x11_keymask_x11_to_scim (display, gdkevent.state);
+
+    // Special treatment for two backslash keys on jp106 keyboard.
+    if (key.code == SCIM_KEY_backslash) {
+        int keysym_size = 0;
+        KeySym *keysyms = XGetKeyboardMapping (display, gdkevent.hardware_keycode, 1, &keysym_size);
+        if (keysyms != NULL) {
+            if (keysyms[0] == XK_backslash &&
+                (keysym_size > 1 && keysyms[1] == XK_underscore))
+                key.mask |= SCIM_KEY_QuirkKanaRoMask;
+            XFree (keysyms);
+        }
+    }
+#else
+    if (gdkevent.state & GDK_SHIFT_MASK) key.mask |=SCIM_KEY_ShiftMask;
+    if (gdkevent.state & GDK_LOCK_MASK) key.mask |=SCIM_KEY_CapsLockMask;
+    if (gdkevent.state & GDK_CONTROL_MASK) key.mask |=SCIM_KEY_ControlMask;
+    if (gdkevent.state & GDK_MOD1_MASK) key.mask |=SCIM_KEY_AltMask;
+    if (gdkevent.state & GDK_MOD2_MASK) key.mask |=SCIM_KEY_NumLockMask;
+#endif
+
+    if (gdkevent.type == GDK_KEY_RELEASE) key.mask |= SCIM_KEY_ReleaseMask;
+
+    return key;
+}
+
+static GdkKeymap *
+get_gdk_keymap (GdkWindow *window)
+{
+    GdkKeymap *keymap;
+
+#if GDK_MULTIHEAD_SAFE
+    if (window)
+        keymap = gdk_keymap_get_for_display (gdk_window_get_display (window));
+    else
+#endif
+        keymap = gdk_keymap_get_default ();
+
+    return keymap;
+}
+
+static guint32
+get_time (void)
+{
+    int tint;
+    struct timeval tv;
+    struct timezone tz;           /* is not used since ages */
+    gettimeofday (&tv, &tz); 
+    tint = (int) tv.tv_sec * 1000;
+    tint = tint / 1000 * 1000; 
+    tint = tint + tv.tv_usec / 1000;
+    return ((guint32) tint);
+}
+
+static GdkEventKey
+keyevent_scim_to_gdk (const GtkIMContextSCIM *ic,
+                      const KeyEvent   &scimkey)
+{
+    GdkEventKey gdkevent;
+
+#ifdef GDK_WINDOWING_X11
+    Display *display = 0;
+
+    if (ic && ic->impl && ic->impl->client_window)
+        display = GDK_WINDOW_XDISPLAY (ic->impl->client_window);
+    else
+        display = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
+
+    gdkevent.state = scim_x11_keymask_scim_to_x11 (display, scimkey.mask);
+#else
+    gdkevent.state = 0;
+    if (scimkey.is_shift_down ()) gdkevent.state |= GDK_SHIFT_MASK;
+    if (scimkey.is_caps_lock_down ()) gdkevent.state |= GDK_LOCK_MASK;
+    if (scimkey.is_control_down ()) gdkevent.state |= GDK_CONTROL_MASK;
+    if (scimkey.is_alt_down ()) gdkevent.state |= GDK_MOD1_MASK;
+    if (scimkey.is_num_lock_down ()) gdkevent.state |= GDK_MOD2_MASK;
+#endif
+
+    if (scimkey.is_key_release ()) gdkevent.state |= GDK_RELEASE_MASK;
+
+    gdkevent.type = (scimkey.is_key_release () ? GDK_KEY_RELEASE : GDK_KEY_PRESS);
+    gdkevent.window = ((ic && ic->impl) ? ic->impl->client_window : 0);
+    gdkevent.send_event |= SEND_EVENT_MASK;
+    gdkevent.time = get_time ();
+    gdkevent.keyval = scimkey.code;
+    gdkevent.length = 0;
+    gdkevent.string = 0;
+
+    GdkKeymap *keymap = get_gdk_keymap (gdkevent.window);
+
+    GdkKeymapKey *keys;
+    gint          n_keys;
+
+    if (gdk_keymap_get_entries_for_keyval (keymap, gdkevent.keyval, &keys, &n_keys)) {
+        gdkevent.hardware_keycode = keys [0].keycode;
+        gdkevent.group = keys [0].group;
+    } else {
+        gdkevent.hardware_keycode = 0;
+        gdkevent.group = 0;
+    }
+
+    if (keys) g_free (keys);
+
+    return gdkevent;
+}
+
+static bool
+check_socket_frontend ()
+{
+	SocketAddress address;
+	SocketClient client;
+
+    uint32 magic;
+
+    address.set_address (scim_get_default_socket_frontend_address ());
+
+    if (!client.connect (address))
+        return false;
+
+    if (!scim_socket_open_connection (magic,
+                                      String ("ConnectionTester"),
+                                      String ("SocketFrontEnd"),
+                                      client,
+                                      1000)) {
+        return false;
+    }
+
+    return true;
+}
+
+static void
+initialize (void)
+{
+    std::vector<String>     config_list;
+    std::vector<String>     engine_list;
+    std::vector<String>     load_engine_list;
+
+    std::vector<String>     debug_mask_list;
+    int                     debug_verbose = 0;
+
+    size_t                  i;
+
+    bool                    manual = false;
+
+    bool                    socket = true;
+
+    String                  config_module_name;
+
+    // Get debug info
+    {
+        char *str;
+
+        str = getenv ("GTK_IM_SCIM_DEBUG_VERBOSE");
+
+        if (str != NULL)
+            debug_verbose = atoi (str);
+
+        DebugOutput::set_verbose_level (debug_verbose);
+
+        str = getenv ("GTK_IM_SCIM_DEBUG_MASK");
+
+        if (str != NULL) {
+            scim_split_string_list (debug_mask_list, String (str), ',');
+    		if (debug_mask_list.size ()) {
+                DebugOutput::disable_debug (SCIM_DEBUG_AllMask);
+		    	for (i=0; i<debug_mask_list.size (); i++)
+			    	DebugOutput::enable_debug_by_name (debug_mask_list [i]);
+    		}
+        }
+    }
+
+    SCIM_DEBUG_FRONTEND(1) << "Initializing GTK3 SCIM IMModule...\n";
+
+    // Get system language.
+    _language = scim_get_locale_language (scim_get_current_locale ());
+
+    //get modules list
+    scim_get_imengine_module_list (engine_list);
+    scim_get_config_module_list (config_list);
+
+    if (std::find (engine_list.begin (), engine_list.end (), "socket") == engine_list.end () ||
+        std::find (config_list.begin (), config_list.end (), "socket") == config_list.end ())
+        socket = false;
+
+    //Use simple config module as default if available.
+    if (config_list.size ()) {
+        config_module_name = scim_global_config_read (SCIM_GLOBAL_CONFIG_DEFAULT_CONFIG_MODULE, String ("simple"));
+        if (std::find (config_list.begin (), config_list.end (), config_module_name) == config_list.end ())
+            config_module_name = config_list [0];
+    } else {
+        config_module_name = "dummy";
+    }
+
+    const char *engine_list_str = getenv ("GTK_IM_SCIM_IMENGINE_MODULES");
+    if (engine_list_str != NULL) {
+        std::vector <String> spec_engine_list;
+        scim_split_string_list (spec_engine_list, engine_list_str, ',');
+
+        load_engine_list.clear ();
+
+        for (size_t i = 0; i < spec_engine_list.size (); ++i)
+            if (std::find (engine_list.begin (), engine_list.end (), spec_engine_list [i]) != engine_list.end ())
+                load_engine_list.push_back (spec_engine_list [i]);
+
+        manual = true;
+    }
+
+    // If you try to use the socket feature manually,
+    // then let you do it by yourself.
+    if (config_module_name == "socket" ||
+        std::find (load_engine_list.begin (), load_engine_list.end (), "socket") != load_engine_list.end ())
+        socket = false;
+
+    // Try to start a SCIM SocketFrontEnd process if necessary.
+    if (scim_get_default_socket_frontend_address () != scim_get_default_socket_imengine_address () &&
+        scim_get_default_socket_frontend_address () != scim_get_default_socket_config_address ())
+        socket = false;
+
+    if (socket) {
+        // If no Socket FrontEnd is running, then launch one.
+        // And set manual to false.
+        if (!check_socket_frontend ()) {
+            std::cerr << "Launching a SCIM daemon with Socket FrontEnd...\n";
+            char *new_argv [] = { static_cast<char*> ("--no-stay"), 0 };
+            scim_launch (true,
+                         config_module_name,
+                         (load_engine_list.size () ? scim_combine_string_list (load_engine_list, ',') : "all"),
+                         "socket",
+                         new_argv);
+            manual = false;
+        }
+
+        // If there is one Socket FrontEnd running and it's not manual mode,
+        // then just use this Socket Frontend.
+        if (!manual) {
+            for (int i = 0; i < 100; ++i) {
+                if (check_socket_frontend ()) {
+                    config_module_name = "socket";
+                    load_engine_list.clear ();
+                    load_engine_list.push_back ("socket");
+                    break;
+                }
+                scim_usleep (100000);
+            }
+        }
+    }
+
+    if (config_module_name != "dummy") {
+        //load config module
+        SCIM_DEBUG_FRONTEND(1) << "Loading Config module: " << config_module_name << "...\n";
+        _config_module = new ConfigModule (config_module_name);
+
+        //create config instance
+        if (_config_module != NULL && _config_module->valid ())
+            _config = _config_module->create_config ();
+    }
+
+    if (_config.null ()) {
+        SCIM_DEBUG_FRONTEND(1) << "Config module cannot be loaded, using dummy Config.\n";
+
+        if (_config_module) delete _config_module;
+        _config_module = NULL;
+
+        _config = new DummyConfig ();
+        config_module_name = "dummy";
+    }
+
+    // Init colors.
+    gdk_color_parse ("gray92",     &_normal_bg);
+    gdk_color_parse ("black",      &_normal_text);
+    gdk_color_parse ("light blue", &_active_bg);
+    gdk_color_parse ("black",      &_active_text);
+
+    reload_config_callback (_config); 
+    _config->signal_connect_reload (slot (reload_config_callback));
+
+    // create backend
+    _backend = new CommonBackEnd (_config, load_engine_list.size () ? load_engine_list : engine_list);
+
+    if (_backend.null ()) {
+        fprintf (stderr, "GTK IM Module SCIM: Cannot create BackEnd Object!\n");
+    } else {
+        _fallback_factory = _backend->get_factory (SCIM_COMPOSE_KEY_FACTORY_UUID);
+    }
+
+    if (_fallback_factory.null ()) _fallback_factory = new DummyIMEngineFactory ();
+
+    _fallback_instance = _fallback_factory->create_instance (String ("UTF-8"), 0);
+    _fallback_instance->signal_connect_commit_string (slot (fallback_commit_string_cb));
+
+    // Attach Panel Client signal.
+    _panel_client.signal_connect_reload_config                 (slot (panel_slot_reload_config));
+    _panel_client.signal_connect_exit                          (slot (panel_slot_exit));
+    _panel_client.signal_connect_update_lookup_table_page_size (slot (panel_slot_update_lookup_table_page_size));
+    _panel_client.signal_connect_lookup_table_page_up          (slot (panel_slot_lookup_table_page_up));
+    _panel_client.signal_connect_lookup_table_page_down        (slot (panel_slot_lookup_table_page_down));
+    _panel_client.signal_connect_trigger_property              (slot (panel_slot_trigger_property));
+    _panel_client.signal_connect_process_helper_event          (slot (panel_slot_process_helper_event));
+    _panel_client.signal_connect_move_preedit_caret            (slot (panel_slot_move_preedit_caret));
+    _panel_client.signal_connect_select_candidate              (slot (panel_slot_select_candidate));
+    _panel_client.signal_connect_process_key_event             (slot (panel_slot_process_key_event));
+    _panel_client.signal_connect_commit_string                 (slot (panel_slot_commit_string));
+    _panel_client.signal_connect_forward_key_event             (slot (panel_slot_forward_key_event));
+    _panel_client.signal_connect_request_help                  (slot (panel_slot_request_help));
+    _panel_client.signal_connect_request_factory_menu          (slot (panel_slot_request_factory_menu));
+    _panel_client.signal_connect_change_factory                (slot (panel_slot_change_factory));
+
+    if (!panel_initialize ()) {
+        fprintf (stderr, "GTK IM Module SCIM: Cannot connect to Panel!\n");
+    }
+}
+
+static void
+finalize (void)
+{
+    SCIM_DEBUG_FRONTEND(1) << "Finalizing GTK3 SCIM IMModule...\n";
+
+    if (_snooper_installed) {
+        gtk_key_snooper_remove(_snooper_id);
+        _snooper_installed=false;
+        _snooper_id = 0;
+    }
+
+    // Reset this first so that the shared instance could be released correctly afterwards.
+    _default_instance.reset ();
+
+    SCIM_DEBUG_FRONTEND(2) << "Finalize all IC partially.\n";
+    while (_used_ic_impl_list) {
+        // In case in "shared input method" mode,
+        // all contexts share only one instance,
+        // so we need point the reference pointer correctly before finalizing.
+        _used_ic_impl_list->si->set_frontend_data (static_cast <void*> (_used_ic_impl_list->parent));
+        gtk_im_context_scim_finalize_partial (_used_ic_impl_list->parent);
+    }
+
+    delete_all_ic_impl ();
+
+    _fallback_instance.reset ();
+    _fallback_factory.reset ();
+
+    SCIM_DEBUG_FRONTEND(2) << " Releasing BackEnd...\n";
+    _backend.reset ();
+
+    SCIM_DEBUG_FRONTEND(2) << " Releasing Config...\n";
+    _config.reset ();
+
+    if (_config_module) {
+        SCIM_DEBUG_FRONTEND(2) << " Deleting _config_module...\n";
+        delete _config_module;
+        _config_module = 0;
+    }
+
+    _focused_ic = 0;
+    _focused_widget = 0;
+
+    _scim_initialized = false;
+
+    panel_finalize ();
+}
+
+static void
+open_next_factory (GtkIMContextSCIM *ic)
+{
+    SCIM_DEBUG_FRONTEND(2) << "open_next_factory context=" << ic->id << "\n";
+    IMEngineFactoryPointer sf = _backend->get_next_factory ("", "UTF-8", ic->impl->si->get_factory_uuid ());
+
+    if (!sf.null ()) {
+        turn_off_ic (ic);
+        ic->impl->si = sf->create_instance ("UTF-8", ic->impl->si->get_id ());
+        ic->impl->si->set_frontend_data (static_cast <void*> (ic));
+        ic->impl->preedit_string = WideString ();
+        ic->impl->preedit_caret = 0;
+        attach_instance (ic->impl->si);
+        _backend->set_default_factory (_language, sf->get_uuid ());
+        _panel_client.register_input_context (ic->id, sf->get_uuid ());
+        set_ic_capabilities (ic);
+        turn_on_ic (ic);
+
+        if (_shared_input_method) {
+            _default_instance = ic->impl->si;
+            ic->impl->shared_si = true;
+        }
+    }
+}
+
+static void
+open_previous_factory (GtkIMContextSCIM *ic)
+{
+    SCIM_DEBUG_FRONTEND(2) << "open_previous_factory context=" << ic->id << "\n";
+    IMEngineFactoryPointer sf = _backend->get_previous_factory ("", "UTF-8", ic->impl->si->get_factory_uuid ());
+
+    if (!sf.null ()) {
+        turn_off_ic (ic);
+        ic->impl->si = sf->create_instance ("UTF-8", ic->impl->si->get_id ());
+        ic->impl->si->set_frontend_data (static_cast <void*> (ic));
+        ic->impl->preedit_string = WideString ();
+        ic->impl->preedit_caret = 0;
+        attach_instance (ic->impl->si);
+        _backend->set_default_factory (_language, sf->get_uuid ());
+        _panel_client.register_input_context (ic->id, sf->get_uuid ());
+        set_ic_capabilities (ic);
+        turn_on_ic (ic);
+
+        if (_shared_input_method) {
+            _default_instance = ic->impl->si;
+            ic->impl->shared_si = true;
+        }
+    }
+}
+
+static void
+open_specific_factory (GtkIMContextSCIM *ic,
+                       const String     &uuid)
+{
+    SCIM_DEBUG_FRONTEND(2) << "open_specific_factory context=" << ic->id << "\n";
+
+    // The same input method is selected, just turn on the IC.
+    if (ic->impl->si->get_factory_uuid () == uuid) {
+        turn_on_ic (ic);
+        return;
+    }
+
+    IMEngineFactoryPointer sf = _backend->get_factory (uuid);
+
+    if (uuid.length () && !sf.null ()) {
+        turn_off_ic (ic);
+        ic->impl->si = sf->create_instance ("UTF-8", ic->impl->si->get_id ());
+        ic->impl->si->set_frontend_data (static_cast <void*> (ic));
+        ic->impl->preedit_string = WideString ();
+        ic->impl->preedit_caret = 0;
+        attach_instance (ic->impl->si);
+        _backend->set_default_factory (_language, sf->get_uuid ());
+        _panel_client.register_input_context (ic->id, sf->get_uuid ());
+        set_ic_capabilities (ic);
+        turn_on_ic (ic);
+
+        if (_shared_input_method) {
+            _default_instance = ic->impl->si;
+            ic->impl->shared_si = true;
+        }
+    } else {
+        turn_off_ic (ic);
+    }
+}
+
+static void
+attach_instance (const IMEngineInstancePointer &si)
+{
+    si->signal_connect_show_preedit_string (
+        slot (slot_show_preedit_string));
+    si->signal_connect_show_aux_string (
+        slot (slot_show_aux_string));
+    si->signal_connect_show_lookup_table (
+        slot (slot_show_lookup_table));
+
+    si->signal_connect_hide_preedit_string (
+        slot (slot_hide_preedit_string));
+    si->signal_connect_hide_aux_string (
+        slot (slot_hide_aux_string));
+    si->signal_connect_hide_lookup_table (
+        slot (slot_hide_lookup_table));
+
+    si->signal_connect_update_preedit_caret (
+        slot (slot_update_preedit_caret));
+    si->signal_connect_update_preedit_string (
+        slot (slot_update_preedit_string));
+    si->signal_connect_update_aux_string (
+        slot (slot_update_aux_string));
+    si->signal_connect_update_lookup_table (
+        slot (slot_update_lookup_table));
+
+    si->signal_connect_commit_string (
+        slot (slot_commit_string));
+
+    si->signal_connect_forward_key_event (
+        slot (slot_forward_key_event));
+
+    si->signal_connect_register_properties (
+        slot (slot_register_properties));
+
+    si->signal_connect_update_property (
+        slot (slot_update_property));
+
+    si->signal_connect_beep (
+        slot (slot_beep));
+
+    si->signal_connect_start_helper (
+        slot (slot_start_helper));
+
+    si->signal_connect_stop_helper (
+        slot (slot_stop_helper));
+
+    si->signal_connect_send_helper_event (
+        slot (slot_send_helper_event));
+
+    si->signal_connect_get_surrounding_text (
+        slot (slot_get_surrounding_text));
+
+    si->signal_connect_delete_surrounding_text (
+        slot (slot_delete_surrounding_text));
+}
+
+// Implementation of slot functions
+static void
+slot_show_preedit_string (IMEngineInstanceBase *si)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_show_preedit_string...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic) {
+        if (ic->impl->use_preedit) {
+            if (!ic->impl->preedit_started) {
+                g_signal_emit_by_name(_focused_ic, "preedit-start");
+                ic->impl->preedit_started = true;
+            }
+            if (ic->impl->preedit_string.length ())
+                g_signal_emit_by_name(_focused_ic, "preedit-changed");
+        } else {
+            _panel_client.show_preedit_string (ic->id);
+        }
+    }
+}
+
+static void 
+slot_show_aux_string (IMEngineInstanceBase *si)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_show_aux_string...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        _panel_client.show_aux_string (ic->id);
+}
+
+static void 
+slot_show_lookup_table (IMEngineInstanceBase *si)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_show_lookup_table...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        _panel_client.show_lookup_table (ic->id);
+}
+
+static void 
+slot_hide_preedit_string (IMEngineInstanceBase *si)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_hide_preedit_string...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic) {
+        bool emit=false;
+        if (ic->impl->preedit_string.length ()) {
+            ic->impl->preedit_string = WideString ();
+            ic->impl->preedit_caret = 0;
+            ic->impl->preedit_attrlist.clear ();
+            emit = true;
+        }
+        if (ic->impl->use_preedit) {
+            if (emit) g_signal_emit_by_name(ic, "preedit-changed");
+            if (ic->impl->preedit_started) {
+                g_signal_emit_by_name(ic, "preedit-end");
+                ic->impl->preedit_started = false;
+            }
+        } else {
+            _panel_client.hide_preedit_string (ic->id);
+        }
+    }
+}
+
+static void 
+slot_hide_aux_string (IMEngineInstanceBase *si)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_hide_aux_string...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        _panel_client.hide_aux_string (ic->id);
+}
+
+static void 
+slot_hide_lookup_table (IMEngineInstanceBase *si)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_hide_lookup_table...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        _panel_client.hide_lookup_table (ic->id);
+}
+
+static void 
+slot_update_preedit_caret (IMEngineInstanceBase *si, int caret)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_update_preedit_caret...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic && ic->impl->preedit_caret != caret) {
+        ic->impl->preedit_caret = caret;
+        if (ic->impl->use_preedit) {
+            if (!ic->impl->preedit_started) {
+                g_signal_emit_by_name(_focused_ic, "preedit-start");
+                ic->impl->preedit_started = true;
+            }
+            g_signal_emit_by_name(ic, "preedit-changed");
+        } else {
+            _panel_client.update_preedit_caret (ic->id, caret);
+        }
+    }
+}
+
+static void 
+slot_update_preedit_string (IMEngineInstanceBase *si,
+                            const WideString & str,
+                            const AttributeList & attrs)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_update_preedit_string...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic && (ic->impl->preedit_string != str || str.length ())) {
+        ic->impl->preedit_string   = str;
+        ic->impl->preedit_attrlist = attrs;
+        if (ic->impl->use_preedit) {
+            if (!ic->impl->preedit_started) {
+                g_signal_emit_by_name(_focused_ic, "preedit-start");
+                ic->impl->preedit_started = true;
+            }
+            ic->impl->preedit_caret    = str.length ();
+            ic->impl->preedit_updating = true;
+            g_signal_emit_by_name(ic, "preedit-changed");
+            ic->impl->preedit_updating = false;
+        } else {
+            _panel_client.update_preedit_string (ic->id, str, attrs);
+        }
+    }
+}
+
+static void 
+slot_update_aux_string (IMEngineInstanceBase *si,
+                        const WideString & str,
+                        const AttributeList & attrs)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_update_aux_string...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        _panel_client.update_aux_string (ic->id, str, attrs);
+}
+
+static void 
+slot_commit_string (IMEngineInstanceBase *si,
+                    const WideString & str)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_commit_string...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic)
+        g_signal_emit_by_name (ic, "commit", utf8_wcstombs (str).c_str ());
+}
+
+static void 
+slot_forward_key_event (IMEngineInstanceBase *si,
+                        const KeyEvent & key)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_forward_key_event...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && _focused_ic == ic) {
+        GdkEventKey gdkevent = keyevent_scim_to_gdk (ic, key);
+        if (!_fallback_instance->process_key_event (key) &&
+            !gtk_im_context_filter_keypress (GTK_IM_CONTEXT (ic->slave), &gdkevent)) {
+
+            // To avoid timing issue, we need emit the signal directly, rather than put the event into the queue.
+            if (_focused_widget) {
+                gboolean result;
+                g_signal_emit_by_name(_focused_widget, key.is_key_press () ? "key-press-event" : "key-release-event", &gdkevent, &result);
+            } else {
+                gdk_event_put ((GdkEvent *) &gdkevent);
+            }
+        }
+    }
+}
+
+static void 
+slot_update_lookup_table (IMEngineInstanceBase *si,
+                          const LookupTable & table)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_update_lookup_table...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        _panel_client.update_lookup_table (ic->id, table);
+}
+
+static void 
+slot_register_properties (IMEngineInstanceBase *si,
+                          const PropertyList & properties)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_register_properties...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        _panel_client.register_properties (ic->id, properties);
+}
+
+static void 
+slot_update_property (IMEngineInstanceBase *si,
+                      const Property & property)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_update_property ...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        _panel_client.update_property (ic->id, property);
+}
+
+static void
+slot_beep (IMEngineInstanceBase *si)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_beep ...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        gdk_beep ();
+}
+
+static void
+slot_start_helper (IMEngineInstanceBase *si,
+                   const String &helper_uuid)
+{
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    SCIM_DEBUG_FRONTEND(1) << "slot_start_helper helper= " << helper_uuid << " context="
+                           << (ic ? ic->id : -1) << " ic=" << ic
+                           << " ic-uuid=" << ((ic && ic->impl) ? ic->impl->si->get_factory_uuid () : "") << "...\n";
+
+    if (ic && ic->impl)
+        _panel_client.start_helper (ic->id, helper_uuid);
+}
+
+static void
+slot_stop_helper (IMEngineInstanceBase *si,
+                  const String &helper_uuid)
+{
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    SCIM_DEBUG_FRONTEND(1) << "slot_stop_helper helper= " << helper_uuid << " context=" << (ic ? ic->id : -1) << " ic=" << ic << "...\n";
+
+    if (ic && ic->impl)
+        _panel_client.stop_helper (ic->id, helper_uuid);
+}
+
+static void
+slot_send_helper_event (IMEngineInstanceBase *si,
+                        const String      &helper_uuid,
+                        const Transaction &trans)
+{
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    SCIM_DEBUG_FRONTEND(1) << "slot_send_helper_event helper= " << helper_uuid << " context="
+                           << (ic ? ic->id : -1) << " ic=" << ic
+                           << " ic-uuid=" << ((ic && ic->impl) ? ic->impl->si->get_factory_uuid () : "") << "...\n";
+
+    if (ic && ic->impl)
+        _panel_client.send_helper_event (ic->id, helper_uuid, trans);
+}
+
+static bool
+slot_get_surrounding_text (IMEngineInstanceBase *si,
+                           WideString            &text,
+                           int                   &cursor,
+                           int                    maxlen_before,
+                           int                    maxlen_after)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_get_surrounding_text ...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic) {
+        gchar *surrounding;
+        gint   cursor_index;
+        if (gtk_im_context_get_surrounding (GTK_IM_CONTEXT (_focused_ic), &surrounding, &cursor_index)) {
+            SCIM_DEBUG_FRONTEND(2) << "Surrounding text: " << surrounding <<"\n";
+            SCIM_DEBUG_FRONTEND(2) << "Cursor Index    : " << cursor_index <<"\n";
+            WideString before (utf8_mbstowcs (String (surrounding, surrounding + cursor_index)));
+            WideString after (utf8_mbstowcs (String (surrounding + cursor_index)));
+            if (maxlen_before > 0 && maxlen_before < before.length ())
+                before = WideString (before.begin () + (before.length () - maxlen_before), before.end ());
+            else if (maxlen_before == 0) before = WideString ();
+            if (maxlen_after > 0 && maxlen_after < after.length ())
+                after = WideString (after.begin (), after.begin () + maxlen_after);
+            else if (maxlen_after == 0) after = WideString ();
+            text = before + after;
+            cursor = before.length ();
+            return true;
+        }
+    }
+    return false;
+}
+
+static bool
+slot_delete_surrounding_text (IMEngineInstanceBase *si,
+                              int                    offset,
+                              int                    len)
+{
+    SCIM_DEBUG_FRONTEND(1) << "slot_delete_surrounding_text ...\n";
+
+    GtkIMContextSCIM *ic = static_cast<GtkIMContextSCIM *> (si->get_frontend_data ());
+
+    if (ic && ic->impl && _focused_ic == ic)
+        return gtk_im_context_delete_surrounding (GTK_IM_CONTEXT (_focused_ic), offset, len);
+    return false;
+}
+
+static void
+reload_config_callback (const ConfigPointer &config)
+{
+    SCIM_DEBUG_FRONTEND(1) << "reload_config_callback...\n";
+
+    _frontend_hotkey_matcher.load_hotkeys (config);
+    _imengine_hotkey_matcher.load_hotkeys (config);
+
+    KeyEvent key;
+
+    scim_string_to_key (key,
+        config->read (String (SCIM_CONFIG_HOTKEYS_FRONTEND_VALID_KEY_MASK),
+                      String ("Shift+Control+Alt+Lock")));
+
+    _valid_key_mask = (key.mask > 0)?(key.mask):0xFFFF;
+    _valid_key_mask |= SCIM_KEY_ReleaseMask;
+    // Special treatment for two backslash keys on jp106 keyboard.
+    _valid_key_mask |= SCIM_KEY_QuirkKanaRoMask;
+
+    _on_the_spot = config->read (String (SCIM_CONFIG_FRONTEND_ON_THE_SPOT), _on_the_spot);
+    _shared_input_method = config->read (String (SCIM_CONFIG_FRONTEND_SHARED_INPUT_METHOD), _shared_input_method);
+    _use_key_snooper = config->read (String (SCIM_CONFIG_FRONTEND_GTK_IMMODULE_USE_KEY_SNOOPER), _use_key_snooper);
+
+    // Get keyboard layout setting
+    // Flush the global config first, in order to load the new configs from disk.
+    scim_global_config_flush ();
+
+    _keyboard_layout = scim_get_default_keyboard_layout ();
+}
+
+static void
+fallback_commit_string_cb (IMEngineInstanceBase  *si,
+                           const WideString      &str)
+{
+    if (_focused_ic && _focused_ic->impl)
+        g_signal_emit_by_name (_focused_ic, "commit", utf8_wcstombs (str).c_str ());
+}
+
+/*
+vi:ts=4:expandtab:nowrap
+*/
diff -urN scim-1.4.11.orig/extras/gtk3_immodule/gtkimcontextscim.h scim-1.4.11/extras/gtk3_immodule/gtkimcontextscim.h
--- scim-1.4.11.orig/extras/gtk3_immodule/gtkimcontextscim.h	1970-01-01 08:00:00.000000000 +0800
+++ scim-1.4.11/extras/gtk3_immodule/gtkimcontextscim.h	2011-09-11 02:14:10.492344295 +0800
@@ -0,0 +1,59 @@
+/** @file gtkimcontextscim.h
+ *  @brief immodule for GTK3.
+ */
+
+/* 
+ * Smart Common Input Method
+ * 
+ * Copyright (c) 2002-2005 James Su <suzhe@tsinghua.org.cn>
+ *
+ *
+ * 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
+ *
+ * $Id: gtkimcontextscim.h,v 1.12 2005/06/27 15:31:49 suzhe Exp $
+ */
+
+#ifndef __GTK_IM_CONTEXT_SCIM_H__
+#define __GTK_IM_CONTEXT_SCIM_H__
+
+#include <gtk/gtk.h>
+
+typedef struct _GtkIMContextSCIM       GtkIMContextSCIM;
+typedef struct _GtkIMContextSCIMClass  GtkIMContextSCIMClass;
+typedef struct _GtkIMContextSCIMImpl   GtkIMContextSCIMImpl;
+
+struct _GtkIMContextSCIM
+{
+  GtkIMContext object;
+  GtkIMContext *slave;
+  bool slave_preedit;
+
+  GtkIMContextSCIMImpl *impl;
+
+  int id; /* Input Context id*/
+};
+
+struct _GtkIMContextSCIMClass
+{
+  GtkIMContextClass parent_class;
+};
+
+GtkIMContext *gtk_im_context_scim_new (void);
+
+void gtk_im_context_scim_register_type (GTypeModule *type_module);
+void gtk_im_context_scim_shutdown (void);
+
+#endif /* __GTK_IM_CONTEXT_SCIM_H__ */
diff -urN scim-1.4.11.orig/extras/gtk3_immodule/imscim.cpp scim-1.4.11/extras/gtk3_immodule/imscim.cpp
--- scim-1.4.11.orig/extras/gtk3_immodule/imscim.cpp	1970-01-01 08:00:00.000000000 +0800
+++ scim-1.4.11/extras/gtk3_immodule/imscim.cpp	2011-09-11 02:14:10.492344295 +0800
@@ -0,0 +1,76 @@
+/* Smart Common Input Method
+ *
+ * Copyright (c) 2002-2005 James Su <suzhe@tsinghua.org.cn>
+ * 
+ * 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.
+ */
+
+#include <gtk/gtkimmodule.h>
+#include <gtk/gtk.h>
+#include "gtkimcontextscim.h"
+#include <string.h>
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+static const GtkIMContextInfo scim_info = { 
+  "scim",			/* ID */
+  "SCIM Input Method",		/* Human readable name */
+  "scim",			/* Translation domain */
+  SCIM_LOCALEDIR,		/* Dir for bindtextdomain (not strictly needed for "gtk+") */
+  ""			/* Languages for which this module is the default */
+};
+
+static const GtkIMContextInfo *info_list[] = {
+  &scim_info
+};
+
+void
+im_module_init (GTypeModule *type_module)
+{
+  gtk_im_context_scim_register_type (type_module);
+}
+
+void 
+im_module_exit (void)
+{
+  gtk_im_context_scim_shutdown ();
+}
+
+void 
+im_module_list (const GtkIMContextInfo ***contexts,
+		int                      *n_contexts)
+{
+  *contexts = info_list;
+  *n_contexts = G_N_ELEMENTS (info_list);
+}
+
+GtkIMContext *
+im_module_create (const gchar *context_id)
+{
+  if (strcmp (context_id, "scim") == 0)
+    return gtk_im_context_scim_new ();
+  else
+    return NULL;
+}
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
diff -urN scim-1.4.11.orig/extras/gtk3_immodule/im-scim.version-script scim-1.4.11/extras/gtk3_immodule/im-scim.version-script
--- scim-1.4.11.orig/extras/gtk3_immodule/im-scim.version-script	1970-01-01 08:00:00.000000000 +0800
+++ scim-1.4.11/extras/gtk3_immodule/im-scim.version-script	2011-09-11 02:14:10.492344295 +0800
@@ -0,0 +1,16 @@
+IM_SCIM_1.0 {
+    global:
+        extern "C" {
+            im_module_init;
+            im_module_create;
+            im_module_list;
+            im_module_exit;
+        };
+
+    local:
+        extern "C++" {
+            __gnu_cxx::*;
+	    std::*;
+	    *std::*_S_construct*;
+	};
+};
diff -urN scim-1.4.11.orig/extras/gtk3_immodule/Makefile.am scim-1.4.11/extras/gtk3_immodule/Makefile.am
--- scim-1.4.11.orig/extras/gtk3_immodule/Makefile.am	1970-01-01 08:00:00.000000000 +0800
+++ scim-1.4.11/extras/gtk3_immodule/Makefile.am	2011-09-11 02:14:10.492344295 +0800
@@ -0,0 +1,51 @@
+MAINTAINERCLEANFILES 	= Makefile.in
+EXTRA_DIST		= im-scim.version-script
+
+INCLUDES		= -I$(top_builddir) \
+			  -I$(top_builddir)/src \
+	    		  -I$(top_srcdir) \
+			  -I$(top_srcdir)/src \
+			  -I$(top_srcdir)/intl \
+			  -I$(top_srcdir)/data \
+			  -I$(top_srcdir)/utils \
+			  -I$(top_srcdir)/extras/panel \
+			  -DSCIM_DATADIR=\"@SCIM_DATADIR@\" \
+			  -DSCIM_LOCALEDIR=\"@SCIM_LOCALEDIR@\" \
+			  -DSCIM_SYSCONFDIR=\"@SCIM_SYSCONFDIR@\" \
+			  -DSCIM_LIBEXECDIR=\"@SCIM_LIBEXECDIR@\" \
+			  -DSCIM_ICONDIR=\"@SCIM_ICONDIR@\" \
+			  -DSCIM_MODULE_PATH=\"@SCIM_MODULE_PATH@\" \
+			  -DSCIM_TEMPDIR=\"@SCIM_TEMPDIR@\" \
+			  -DSCIM_KEYBOARD_ICON_FILE=\"@SCIM_ICONDIR@/keyboard.png\"
+
+if SCIM_BUILD_GTK3_IMMODULE
+CONFIG_GTK3_IMMODULE = im-scim.la
+endif
+
+if SCIM_BUILD_X11_UTILS
+X11_UTILS=$(top_builddir)/utils/libscim-x11utils@SCIM_EPOCH@.la
+endif
+
+if SCIM_LD_VERSION_SCRIPT
+LD_VERSION_SCRIPT_OPTION="-Wl,--version-script=$(srcdir)/im-scim.version-script"
+endif
+
+noinst_HEADERS = gtkimcontextscim.h
+
+moduledir = @GTK3_IM_MODULEDIR@
+
+module_LTLIBRARIES = $(CONFIG_GTK3_IMMODULE)
+
+im_scim_la_SOURCES = gtkimcontextscim.cpp imscim.cpp
+
+im_scim_la_CXXFLAGS=@GTK3_CFLAGS@
+im_scim_la_CFLAGS  =@GTK3_CFLAGS@
+
+im_scim_la_LDFLAGS = -rpath $(moduledir) \
+		     -avoid-version \
+		     -module \
+		     -lstdc++ \
+		     $(LD_VERSION_SCRIPT_OPTION) \
+		     @GTK3_LIBS@
+
+im_scim_la_LIBADD  = $(top_builddir)/src/libscim@SCIM_EPOCH@.la $(X11_UTILS)
diff -urN scim-1.4.11.orig/extras/Makefile.am scim-1.4.11/extras/Makefile.am
--- scim-1.4.11.orig/extras/Makefile.am	2007-06-17 15:15:10.000000000 +0800
+++ scim-1.4.11/extras/Makefile.am	2011-09-11 02:14:10.492344295 +0800
@@ -18,4 +18,4 @@
 MAINTAINERCLEANFILES	= Makefile.in
 CLEANFILES		= *.bak
 
-SUBDIRS			= panel gtk2_immodule setup
+SUBDIRS			= panel gtk2_immodule gtk3_immodule setup

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File gtk3-1.4.11.diff of Package scim (Revision c3ff97ec65371811e820a9b95e3707ce)

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