Consolidate base utility libraries into libeutil.

Evolution consists of entirely too many small utility libraries, which
increases linking and loading time, places a burden on higher layers of
the application (e.g. modules) which has to remember to link to all the
small in-tree utility libraries, and makes it difficult to generate API
documentation for these utility libraries in one Gtk-Doc module.

Merge the following utility libraries under the umbrella of libeutil,
and enforce a single-include policy on libeutil so we can reorganize
the files as desired without disrupting its pseudo-public API.

   libemail-utils/libemail-utils.la
   libevolution-utils/libevolution-utils.la
   filter/libfilter.la
   widgets/e-timezone-dialog/libetimezonedialog.la
   widgets/menus/libmenus.la
   widgets/misc/libemiscwidgets.la
   widgets/table/libetable.la
   widgets/text/libetext.la

This also merges libedataserverui from the Evolution-Data-Server module,
since Evolution is its only consumer nowadays, and I'd like to make some
improvements to those APIs without concern for backward-compatibility.

And finally, start a Gtk-Doc module for libeutil.  It's going to be a
project just getting all the symbols _listed_ much less _documented_.
But the skeletal structure is in place and I'm off to a good start.

1 files changed, 1373 insertions, 0 deletions

diff --git a/e-util/ea-calendar-item.c b/e-util/ea-calendar-item.c
new file mode 100644
index 0000000000..2f5ac91d5b
--- /dev/null
+++ b/e-util/ea-calendar-item.c
@@ -0,0 +1,1373 @@
+/*
+ * This program 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) version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Authors:
+ *		Bolian Yin <bolian.yin@sun.com>
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <time.h>
+#include <string.h>
+#include <libgnomecanvas/gnome-canvas.h>
+#include <glib/gi18n.h>
+
+#include <libedataserver/libedataserver.h>
+
+#include "ea-calendar-item.h"
+#include "ea-calendar-cell.h"
+#include "ea-cell-table.h"
+
+#include "e-misc-utils.h"
+
+#define EA_CALENDAR_COLUMN_NUM E_CALENDAR_COLS_PER_MONTH
+
+/* EaCalendarItem */
+static void ea_calendar_item_class_init (EaCalendarItemClass *class);
+static void ea_calendar_item_finalize (GObject *object);
+
+static const gchar * ea_calendar_item_get_name (AtkObject *accessible);
+static const gchar * ea_calendar_item_get_description (AtkObject *accessible);
+static gint ea_calendar_item_get_n_children (AtkObject *accessible);
+static AtkObject *ea_calendar_item_ref_child (AtkObject *accessible, gint index);
+static AtkStateSet * ea_calendar_item_ref_state_set (AtkObject *accessible);
+
+/* atk table interface */
+static void atk_table_interface_init (AtkTableIface *iface);
+static gint table_interface_get_index_at (AtkTable *table,
+					  gint     row,
+					  gint     column);
+static gint table_interface_get_column_at_index (AtkTable *table,
+						 gint     index);
+static gint table_interface_get_row_at_index (AtkTable *table,
+					      gint     index);
+static AtkObject * table_interface_ref_at (AtkTable *table,
+					  gint     row,
+					  gint     column);
+static gint table_interface_get_n_rows (AtkTable *table);
+static gint table_interface_get_n_columns (AtkTable *table);
+static gint table_interface_get_column_extent_at (AtkTable      *table,
+						  gint          row,
+						  gint          column);
+static gint table_interface_get_row_extent_at (AtkTable      *table,
+					       gint          row,
+					       gint          column);
+
+static gboolean table_interface_is_row_selected (AtkTable *table,
+						 gint     row);
+static gboolean table_interface_is_column_selected (AtkTable *table,
+						    gint     row);
+static gboolean table_interface_is_selected (AtkTable *table,
+					     gint     row,
+					     gint     column);
+static gint table_interface_get_selected_rows (AtkTable *table,
+					       gint **rows_selected);
+static gint table_interface_get_selected_columns (AtkTable *table,
+						  gint     **columns_selected);
+static gboolean table_interface_add_row_selection (AtkTable *table, gint row);
+static gboolean table_interface_remove_row_selection (AtkTable *table,
+						      gint row);
+static gboolean table_interface_add_column_selection (AtkTable *table,
+						      gint column);
+static gboolean table_interface_remove_column_selection (AtkTable *table,
+							 gint column);
+static AtkObject * table_interface_get_row_header (AtkTable *table, gint row);
+static AtkObject * table_interface_get_column_header (AtkTable *table,
+						     gint in_col);
+static AtkObject * table_interface_get_caption (AtkTable *table);
+
+static const gchar *
+table_interface_get_column_description (AtkTable *table,
+                                        gint in_col);
+
+static const gchar *
+table_interface_get_row_description (AtkTable *table,
+                                     gint row);
+
+static AtkObject *table_interface_get_summary (AtkTable *table);
+
+/* atk selection interface */
+static void atk_selection_interface_init (AtkSelectionIface *iface);
+static gboolean selection_interface_add_selection (AtkSelection *selection,
+                                                   gint i);
+static gboolean selection_interface_clear_selection (AtkSelection *selection);
+static AtkObject *selection_interface_ref_selection (AtkSelection *selection,
+                                                     gint i);
+static gint selection_interface_get_selection_count (AtkSelection *selection);
+static gboolean selection_interface_is_child_selected (AtkSelection *selection,
+                                                       gint i);
+
+/* callbacks */
+static void selection_preview_change_cb (ECalendarItem *calitem);
+static void date_range_changed_cb (ECalendarItem *calitem);
+
+/* helpers */
+static EaCellTable *ea_calendar_item_get_cell_data (EaCalendarItem *ea_calitem);
+static void ea_calendar_item_destory_cell_data (EaCalendarItem *ea_calitem);
+static gboolean ea_calendar_item_get_column_label (EaCalendarItem *ea_calitem,
+                                                   gint column,
+                                                   gchar *buffer,
+                                                   gint buffer_size);
+static gboolean ea_calendar_item_get_row_label (EaCalendarItem *ea_calitem,
+                                                gint row,
+                                                gchar *buffer,
+                                                gint buffer_size);
+static gboolean e_calendar_item_get_offset_for_date (ECalendarItem *calitem,
+                                                     gint year,
+                                                     gint month,
+                                                     gint day,
+                                                     gint *offset);
+static void ea_calendar_set_focus_object (EaCalendarItem *ea_calitem,
+                                          AtkObject *item_cell);
+
+#ifdef ACC_DEBUG
+static gint n_ea_calendar_item_created = 0;
+static gint n_ea_calendar_item_destroyed = 0;
+#endif
+
+static gpointer parent_class = NULL;
+
+GType
+ea_calendar_item_get_type (void)
+{
+	static GType type = 0;
+	AtkObjectFactory *factory;
+	GTypeQuery query;
+	GType derived_atk_type;
+
+	if (!type) {
+		static GTypeInfo tinfo = {
+			sizeof (EaCalendarItemClass),
+			(GBaseInitFunc) NULL, /* base init */
+			(GBaseFinalizeFunc) NULL, /* base finalize */
+			(GClassInitFunc) ea_calendar_item_class_init, /* class init */
+			(GClassFinalizeFunc) NULL, /* class finalize */
+			NULL, /* class data */
+			sizeof (EaCalendarItem), /* instance size */
+			0, /* nb preallocs */
+			(GInstanceInitFunc) NULL, /* instance init */
+			NULL /* value table */
+		};
+
+		static const GInterfaceInfo atk_table_info = {
+			(GInterfaceInitFunc) atk_table_interface_init,
+			(GInterfaceFinalizeFunc) NULL,
+			NULL
+		};
+		static const GInterfaceInfo atk_selection_info = {
+			(GInterfaceInitFunc) atk_selection_interface_init,
+			(GInterfaceFinalizeFunc) NULL,
+			NULL
+		};
+
+		/*
+		 * Figure out the size of the class and instance
+		 * we are run-time deriving from (GailCanvasItem, in this case)
+		 */
+
+		factory = atk_registry_get_factory (
+			atk_get_default_registry (),
+			GNOME_TYPE_CANVAS_ITEM);
+		derived_atk_type = atk_object_factory_get_accessible_type (factory);
+		g_type_query (derived_atk_type, &query);
+
+		tinfo.class_size = query.class_size;
+		tinfo.instance_size = query.instance_size;
+
+		type = g_type_register_static (
+			derived_atk_type,
+			"EaCalendarItem", &tinfo, 0);
+		g_type_add_interface_static (
+			type, ATK_TYPE_TABLE,
+			&atk_table_info);
+		g_type_add_interface_static (
+			type, ATK_TYPE_SELECTION,
+			&atk_selection_info);
+	}
+
+	return type;
+}
+
+static void
+ea_calendar_item_class_init (EaCalendarItemClass *klass)
+{
+	GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+	AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
+
+	gobject_class->finalize = ea_calendar_item_finalize;
+	parent_class = g_type_class_peek_parent (klass);
+
+	class->get_name = ea_calendar_item_get_name;
+	class->get_description = ea_calendar_item_get_description;
+	class->ref_state_set = ea_calendar_item_ref_state_set;
+
+	class->get_n_children = ea_calendar_item_get_n_children;
+	class->ref_child = ea_calendar_item_ref_child;
+}
+
+AtkObject *
+ea_calendar_item_new (GObject *obj)
+{
+	gpointer object;
+	AtkObject *atk_object;
+	AtkObject *item_cell;
+
+	g_return_val_if_fail (E_IS_CALENDAR_ITEM (obj), NULL);
+	object = g_object_new (EA_TYPE_CALENDAR_ITEM, NULL);
+	atk_object = ATK_OBJECT (object);
+	atk_object_initialize (atk_object, obj);
+	atk_object->role = ATK_ROLE_CALENDAR;
+
+	item_cell = atk_selection_ref_selection (
+		ATK_SELECTION (atk_object), 0);
+	if (item_cell)
+		ea_calendar_set_focus_object (EA_CALENDAR_ITEM (atk_object), item_cell);
+
+#ifdef ACC_DEBUG
+	++n_ea_calendar_item_created;
+	g_print (
+		"ACC_DEBUG: n_ea_calendar_item_created = %d\n",
+		n_ea_calendar_item_created);
+#endif
+	/* connect signal handlers */
+	g_signal_connect (
+		obj, "selection_preview_changed",
+		G_CALLBACK (selection_preview_change_cb), atk_object);
+	g_signal_connect (
+		obj, "date_range_changed",
+		G_CALLBACK (date_range_changed_cb), atk_object);
+
+	return atk_object;
+}
+
+static void
+ea_calendar_item_finalize (GObject *object)
+{
+	EaCalendarItem *ea_calitem;
+
+	g_return_if_fail (EA_IS_CALENDAR_ITEM (object));
+
+	ea_calitem = EA_CALENDAR_ITEM (object);
+
+	/* Free the allocated cell data */
+	ea_calendar_item_destory_cell_data (ea_calitem);
+
+	G_OBJECT_CLASS (parent_class)->finalize (object);
+#ifdef ACC_DEBUG
+	++n_ea_calendar_item_destroyed;
+	printf (
+		"ACC_DEBUG: n_ea_calendar_item_destroyed = %d\n",
+		n_ea_calendar_item_destroyed);
+#endif
+}
+
+static const gchar *
+ea_calendar_item_get_name (AtkObject *accessible)
+{
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	gint start_year, start_month, start_day;
+	gint end_year, end_month, end_day;
+	gchar *name_str = NULL;
+	gchar buffer_start[128] = "";
+	gchar buffer_end[128] = "";
+	struct tm day_start = { 0 };
+	struct tm day_end = { 0 };
+
+	g_return_val_if_fail (EA_IS_CALENDAR_ITEM (accessible), NULL);
+
+	g_obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (accessible));
+	if (!g_obj)
+		return NULL;
+	g_return_val_if_fail (E_IS_CALENDAR_ITEM (g_obj), NULL);
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	if (e_calendar_item_get_date_range (
+		calitem,
+		&start_year, &start_month, &start_day,
+		&end_year, &end_month, &end_day)) {
+
+		day_start.tm_year = start_year - 1900;
+		day_start.tm_mon = start_month;
+		day_start.tm_mday = start_day;
+		day_start.tm_isdst = -1;
+
+		e_utf8_strftime (
+			buffer_start, sizeof (buffer_start),
+			_("%d %B %Y"), &day_start);
+
+		day_end.tm_year = end_year - 1900;
+		day_end.tm_mon = end_month;
+		day_end.tm_mday = end_day;
+		day_end.tm_isdst = -1;
+
+		e_utf8_strftime (
+			buffer_end, sizeof (buffer_end),
+			_("%d %B %Y"), &day_end);
+
+		name_str = g_strdup_printf (
+			_("Calendar: from %s to %s"),
+			buffer_start, buffer_end);
+	}
+
+#if 0
+	if (e_calendar_item_get_selection (calitem, &select_start, &select_end)) {
+		GDate select_start, select_end;
+		gint year1, year2, month1, month2, day1, day2;
+
+		year1 = g_date_get_year (&select_start);
+		month1  = g_date_get_month (&select_start);
+		day1 = g_date_get_day (&select_start);
+
+		year2 = g_date_get_year (&select_end);
+		month2  = g_date_get_month (&select_end);
+		day2 = g_date_get_day (&select_end);
+
+		sprintf (
+			new_name + strlen (new_name),
+			" : current selection: from %d-%d-%d to %d-%d-%d.",
+			year1, month1, day1,
+			year2, month2, day2);
+	}
+#endif
+
+	ATK_OBJECT_CLASS (parent_class)->set_name (accessible, name_str);
+	g_free (name_str);
+
+	return accessible->name;
+}
+
+static const gchar *
+ea_calendar_item_get_description (AtkObject *accessible)
+{
+	if (accessible->description)
+		return accessible->description;
+
+	return _("evolution calendar item");
+}
+
+static AtkStateSet *
+ea_calendar_item_ref_state_set (AtkObject *accessible)
+{
+	AtkStateSet *state_set;
+	GObject *g_obj;
+
+	state_set = ATK_OBJECT_CLASS (parent_class)->ref_state_set (accessible);
+	g_obj = atk_gobject_accessible_get_object (
+		ATK_GOBJECT_ACCESSIBLE (accessible));
+	if (!g_obj)
+		return state_set;
+
+	atk_state_set_add_state (state_set, ATK_STATE_ENABLED);
+	atk_state_set_add_state (state_set, ATK_STATE_SENSITIVE);
+
+	return state_set;
+}
+
+static gint
+ea_calendar_item_get_n_children (AtkObject *accessible)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	gint n_children = 0;
+	gint start_year, start_month, start_day;
+	gint end_year, end_month, end_day;
+	GDate *start_date, *end_date;
+
+	g_return_val_if_fail (EA_IS_CALENDAR_ITEM (accessible), -1);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (accessible);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return -1;
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	if (!e_calendar_item_get_date_range (calitem, &start_year,
+					     &start_month, &start_day,
+					     &end_year, &end_month,
+					     &end_day))
+		return 0;
+
+	start_date = g_date_new_dmy (start_day, start_month + 1, start_year);
+	end_date = g_date_new_dmy (end_day, end_month + 1, end_year);
+
+	n_children = g_date_days_between (start_date, end_date) + 1;
+	g_free (start_date);
+	g_free (end_date);
+	return n_children;
+}
+
+static AtkObject *
+ea_calendar_item_ref_child (AtkObject *accessible,
+                            gint index)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	gint n_children;
+	ECalendarCell *cell;
+	EaCellTable *cell_data;
+	EaCalendarItem *ea_calitem;
+
+	g_return_val_if_fail (EA_IS_CALENDAR_ITEM (accessible), NULL);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (accessible);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return NULL;
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+
+	n_children = ea_calendar_item_get_n_children (accessible);
+	if (index < 0 || index >= n_children)
+		return NULL;
+
+	ea_calitem = EA_CALENDAR_ITEM (accessible);
+	cell_data = ea_calendar_item_get_cell_data (ea_calitem);
+	if (!cell_data)
+		return NULL;
+
+	cell = ea_cell_table_get_cell_at_index (cell_data, index);
+	if (!cell) {
+		cell = e_calendar_cell_new (
+			calitem,
+			index / EA_CALENDAR_COLUMN_NUM,
+			index % EA_CALENDAR_COLUMN_NUM);
+		ea_cell_table_set_cell_at_index (cell_data, index, cell);
+		g_object_unref (cell);
+	}
+
+#ifdef ACC_DEBUG
+	g_print (
+		"AccDebug: ea_calendar_item children[%d]=%p\n", index,
+		(gpointer) cell);
+#endif
+	return g_object_ref (atk_gobject_accessible_for_object (G_OBJECT (cell)));
+}
+
+/* atk table interface */
+
+static void
+atk_table_interface_init (AtkTableIface *iface)
+{
+	g_return_if_fail (iface != NULL);
+
+	iface->ref_at = table_interface_ref_at;
+
+	iface->get_n_rows = table_interface_get_n_rows;
+	iface->get_n_columns = table_interface_get_n_columns;
+	iface->get_index_at = table_interface_get_index_at;
+	iface->get_column_at_index = table_interface_get_column_at_index;
+	iface->get_row_at_index = table_interface_get_row_at_index;
+	iface->get_column_extent_at = table_interface_get_column_extent_at;
+	iface->get_row_extent_at = table_interface_get_row_extent_at;
+
+	iface->is_selected = table_interface_is_selected;
+	iface->get_selected_rows = table_interface_get_selected_rows;
+	iface->get_selected_columns = table_interface_get_selected_columns;
+	iface->is_row_selected = table_interface_is_row_selected;
+	iface->is_column_selected = table_interface_is_column_selected;
+	iface->add_row_selection = table_interface_add_row_selection;
+	iface->remove_row_selection = table_interface_remove_row_selection;
+	iface->add_column_selection = table_interface_add_column_selection;
+	iface->remove_column_selection = table_interface_remove_column_selection;
+
+	iface->get_row_header = table_interface_get_row_header;
+	iface->get_column_header = table_interface_get_column_header;
+	iface->get_caption = table_interface_get_caption;
+	iface->get_summary = table_interface_get_summary;
+	iface->get_row_description = table_interface_get_row_description;
+	iface->get_column_description = table_interface_get_column_description;
+}
+
+static AtkObject *
+table_interface_ref_at (AtkTable *table,
+                        gint row,
+                        gint column)
+{
+	gint index;
+
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+	index = EA_CALENDAR_COLUMN_NUM * row + column;
+	return ea_calendar_item_ref_child (ATK_OBJECT (ea_calitem), index);
+}
+
+static gint
+table_interface_get_n_rows (AtkTable *table)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+	gint n_children;
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return -1;
+
+	n_children = ea_calendar_item_get_n_children (ATK_OBJECT (ea_calitem));
+	return (n_children - 1) / EA_CALENDAR_COLUMN_NUM + 1;
+}
+
+static gint
+table_interface_get_n_columns (AtkTable *table)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return -1;
+
+	return EA_CALENDAR_COLUMN_NUM;
+}
+
+static gint
+table_interface_get_index_at (AtkTable *table,
+                              gint row,
+                              gint column)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return -1;
+
+	return row * EA_CALENDAR_COLUMN_NUM + column;
+}
+
+static gint
+table_interface_get_column_at_index (AtkTable *table,
+                                     gint index)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+	gint n_children;
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return -1;
+
+	n_children = ea_calendar_item_get_n_children (ATK_OBJECT (ea_calitem));
+	if (index >= 0 && index < n_children)
+		return index % EA_CALENDAR_COLUMN_NUM;
+	return -1;
+}
+
+static gint
+table_interface_get_row_at_index (AtkTable *table,
+                                  gint index)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+	gint n_children;
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return -1;
+
+	n_children = ea_calendar_item_get_n_children (ATK_OBJECT (ea_calitem));
+	if (index >= 0 && index < n_children)
+		return index / EA_CALENDAR_COLUMN_NUM;
+	return -1;
+}
+
+static gint
+table_interface_get_column_extent_at (AtkTable *table,
+                                      gint row,
+                                      gint column)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return FALSE;
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	return calitem->cell_width;
+}
+
+static gint
+table_interface_get_row_extent_at (AtkTable *table,
+                                   gint row,
+                                   gint column)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return FALSE;
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	return calitem->cell_height;
+}
+
+/* any day in the row is selected, the row is selected */
+static gboolean
+table_interface_is_row_selected (AtkTable *table,
+                                 gint row)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	gint n_rows;
+	ECalendarItem *calitem;
+	gint row_index_start, row_index_end;
+	gint sel_index_start, sel_index_end;
+
+	GDate start_date, end_date;
+
+	g_return_val_if_fail (EA_IS_CALENDAR_ITEM (table), FALSE);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (table);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return FALSE;
+
+	n_rows = table_interface_get_n_rows (table);
+	if (row < 0 || row >= n_rows)
+		return FALSE;
+
+	row_index_start = row * EA_CALENDAR_COLUMN_NUM;
+	row_index_end = row_index_start + EA_CALENDAR_COLUMN_NUM - 1;
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	if (!e_calendar_item_get_selection (calitem, &start_date, &end_date))
+		return FALSE;
+
+	e_calendar_item_get_offset_for_date (calitem,
+					     g_date_get_year (&start_date),
+					     g_date_get_month (&start_date),
+					     g_date_get_day (&start_date),
+					     &sel_index_start);
+	e_calendar_item_get_offset_for_date (calitem,
+					     g_date_get_year (&end_date),
+					     g_date_get_month (&end_date),
+					     g_date_get_day (&end_date),
+					     &sel_index_end);
+
+	if ((sel_index_start < row_index_start &&
+	     sel_index_end >= row_index_start) ||
+	    (sel_index_start >= row_index_start &&
+	     sel_index_start <= row_index_end))
+	    return TRUE;
+	return FALSE;
+}
+
+static gboolean
+table_interface_is_selected (AtkTable *table,
+                             gint row,
+                             gint column)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	gint n_rows, n_columns;
+	ECalendarItem *calitem;
+	gint index;
+	gint sel_index_start, sel_index_end;
+
+	GDate start_date, end_date;
+
+	g_return_val_if_fail (EA_IS_CALENDAR_ITEM (table), FALSE);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (table);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return FALSE;
+
+	n_rows = table_interface_get_n_rows (table);
+	if (row < 0 || row >= n_rows)
+		return FALSE;
+	n_columns = table_interface_get_n_columns (table);
+	if (column < 0 || column >= n_columns)
+		return FALSE;
+
+	index = table_interface_get_index_at (table, row, column);
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	if (!e_calendar_item_get_selection (calitem, &start_date, &end_date))
+		return FALSE;
+
+	e_calendar_item_get_offset_for_date (calitem,
+					     g_date_get_year (&start_date),
+					     g_date_get_month (&start_date),
+					     g_date_get_day (&start_date),
+					     &sel_index_start);
+	e_calendar_item_get_offset_for_date (calitem,
+					     g_date_get_year (&end_date),
+					     g_date_get_month (&end_date),
+					     g_date_get_day (&end_date), &sel_index_end);
+
+	if (sel_index_start <= index && sel_index_end >= index)
+	    return TRUE;
+	return FALSE;
+}
+
+static gboolean
+table_interface_is_column_selected (AtkTable *table,
+                                    gint column)
+{
+	return FALSE;
+}
+
+static gint
+table_interface_get_selected_rows (AtkTable *table,
+                                   gint **rows_selected)
+{
+	*rows_selected = NULL;
+	return -1;
+}
+
+static gint
+table_interface_get_selected_columns (AtkTable *table,
+                                      gint **columns_selected)
+{
+	*columns_selected = NULL;
+	return -1;
+}
+
+static gboolean
+table_interface_add_row_selection (AtkTable *table,
+                                   gint row)
+{
+	return FALSE;
+}
+
+static gboolean
+table_interface_remove_row_selection (AtkTable *table,
+                                      gint row)
+{
+	return FALSE;
+}
+
+static gboolean
+table_interface_add_column_selection (AtkTable *table,
+                                      gint column)
+{
+	return FALSE;
+}
+
+static gboolean
+table_interface_remove_column_selection (AtkTable *table,
+                                         gint column)
+{
+	/* FIXME: NOT IMPLEMENTED */
+	return FALSE;
+}
+
+static AtkObject *
+table_interface_get_row_header (AtkTable *table,
+                                gint row)
+{
+	/* FIXME: NOT IMPLEMENTED */
+	return NULL;
+}
+
+static AtkObject *
+table_interface_get_column_header (AtkTable *table,
+                                   gint in_col)
+{
+	/* FIXME: NOT IMPLEMENTED */
+	return NULL;
+}
+
+static AtkObject *
+table_interface_get_caption (AtkTable *table)
+{
+	/* FIXME: NOT IMPLEMENTED */
+	return NULL;
+}
+
+static const gchar *
+table_interface_get_column_description (AtkTable *table,
+                                        gint in_col)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+	const gchar *description = NULL;
+	EaCellTable *cell_data;
+	gint n_columns;
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return NULL;
+
+	n_columns = table_interface_get_n_columns (table);
+	if (in_col < 0 || in_col >= n_columns)
+		return NULL;
+	cell_data = ea_calendar_item_get_cell_data (ea_calitem);
+	if (!cell_data)
+		return NULL;
+
+	description = ea_cell_table_get_column_label (cell_data, in_col);
+	if (!description) {
+		gchar buffer[128] = "column description";
+		ea_calendar_item_get_column_label (
+			ea_calitem, in_col,
+			buffer, sizeof (buffer));
+		ea_cell_table_set_column_label (cell_data, in_col, buffer);
+		description = ea_cell_table_get_column_label (
+			cell_data, in_col);
+	}
+	return description;
+}
+
+static const gchar *
+table_interface_get_row_description (AtkTable *table,
+                                     gint row)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
+	const gchar *description = NULL;
+	EaCellTable *cell_data;
+	gint n_rows;
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return NULL;
+
+	n_rows = table_interface_get_n_rows (table);
+	if (row < 0 || row >= n_rows)
+		return NULL;
+	cell_data = ea_calendar_item_get_cell_data (ea_calitem);
+	if (!cell_data)
+		return NULL;
+
+	description = ea_cell_table_get_row_label (cell_data, row);
+	if (!description) {
+		gchar buffer[128] = "row description";
+		ea_calendar_item_get_row_label (
+			ea_calitem, row,
+						buffer, sizeof (buffer));
+		ea_cell_table_set_row_label (cell_data, row, buffer);
+		description = ea_cell_table_get_row_label (
+			cell_data,
+			row);
+	}
+	return description;
+}
+
+static AtkObject *
+table_interface_get_summary (AtkTable *table)
+{
+	/* FIXME: NOT IMPLEMENTED */
+	return NULL;
+}
+
+/* atkselection interface */
+
+static void
+atk_selection_interface_init (AtkSelectionIface *iface)
+{
+	g_return_if_fail (iface != NULL);
+
+	iface->add_selection = selection_interface_add_selection;
+	iface->clear_selection = selection_interface_clear_selection;
+	iface->ref_selection = selection_interface_ref_selection;
+	iface->get_selection_count = selection_interface_get_selection_count;
+	iface->is_child_selected = selection_interface_is_child_selected;
+}
+
+static gboolean
+selection_interface_add_selection (AtkSelection *selection,
+                                   gint index)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
+	gint year, month, day;
+	GDate start_date, end_date;
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return FALSE;
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	if (!e_calendar_item_get_date_for_offset (calitem, index,
+						  &year, &month, &day))
+		return FALSE;
+
+	/* FIXME: not support mulit-selection */
+	g_date_set_dmy (&start_date, day, month + 1, year);
+	end_date = start_date;
+	e_calendar_item_set_selection (calitem, &start_date, &end_date);
+	return TRUE;
+}
+
+static gboolean
+selection_interface_clear_selection (AtkSelection *selection)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return FALSE;
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	e_calendar_item_set_selection (calitem, NULL, NULL);
+
+	return TRUE;
+}
+
+static AtkObject *
+selection_interface_ref_selection (AtkSelection *selection,
+                                   gint i)
+{
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
+	gint count, sel_offset;
+	GDate start_date, end_date;
+
+	count = selection_interface_get_selection_count (selection);
+	if (i < 0 || i >= count)
+		return NULL;
+
+	g_obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (ea_calitem));
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	if (!e_calendar_item_get_selection (calitem, &start_date, &end_date))
+		return NULL;
+	if (!e_calendar_item_get_offset_for_date (calitem,
+						  g_date_get_year (&start_date),
+						  g_date_get_month (&start_date) - 1,
+						  g_date_get_day (&start_date),
+						  &sel_offset))
+		return NULL;
+
+	return ea_calendar_item_ref_child (ATK_OBJECT (selection), sel_offset + i);
+}
+
+static gint
+selection_interface_get_selection_count (AtkSelection *selection)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
+	GDate start_date, end_date;
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return 0;
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+	if (e_calendar_item_get_selection (calitem, &start_date, &end_date))
+		return g_date_days_between (&start_date, &end_date) + 1;
+	else
+		return 0;
+}
+
+static gboolean
+selection_interface_is_child_selected (AtkSelection *selection,
+                                       gint index)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
+	gint row, column, n_children;
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return FALSE;
+
+	n_children = atk_object_get_n_accessible_children (ATK_OBJECT (selection));
+	if (index < 0 || index >= n_children)
+		return FALSE;
+
+	row = index / EA_CALENDAR_COLUMN_NUM;
+	column = index % EA_CALENDAR_COLUMN_NUM;
+
+	return table_interface_is_selected (ATK_TABLE (selection), row, column);
+}
+
+/* callbacks */
+
+static void
+selection_preview_change_cb (ECalendarItem *calitem)
+{
+	AtkObject *atk_obj;
+	AtkObject *item_cell;
+
+	g_return_if_fail (E_IS_CALENDAR_ITEM (calitem));
+	atk_obj = atk_gobject_accessible_for_object (G_OBJECT (calitem));
+	ea_calendar_item_destory_cell_data (EA_CALENDAR_ITEM (atk_obj));
+
+	/* only deal with the first selected child, for now */
+	item_cell = atk_selection_ref_selection (
+		ATK_SELECTION (atk_obj), 0);
+
+	if (item_cell)
+		ea_calendar_set_focus_object (EA_CALENDAR_ITEM (atk_obj), item_cell);
+
+	g_signal_emit_by_name (
+		atk_obj,
+		"active-descendant-changed",
+		item_cell);
+	g_signal_emit_by_name (atk_obj, "selection_changed");
+}
+
+static void
+date_range_changed_cb (ECalendarItem *calitem)
+{
+	AtkObject *atk_obj;
+	AtkObject *item_cell;
+
+	g_return_if_fail (E_IS_CALENDAR_ITEM (calitem));
+	atk_obj = atk_gobject_accessible_for_object (G_OBJECT (calitem));
+	ea_calendar_item_destory_cell_data (EA_CALENDAR_ITEM (atk_obj));
+
+	item_cell = atk_selection_ref_selection (
+		ATK_SELECTION (atk_obj), 0);
+	if (item_cell)
+		ea_calendar_set_focus_object (EA_CALENDAR_ITEM (atk_obj), item_cell);
+
+	g_signal_emit_by_name (atk_obj, "model_changed");
+}
+
+/* helpers */
+
+static EaCellTable *
+ea_calendar_item_get_cell_data (EaCalendarItem *ea_calitem)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	EaCellTable *cell_data;
+
+	g_return_val_if_fail (ea_calitem, NULL);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return NULL;
+
+	cell_data = g_object_get_data (
+		G_OBJECT (ea_calitem),
+		"ea-calendar-cell-table");
+
+	if (!cell_data) {
+		gint n_cells = ea_calendar_item_get_n_children (ATK_OBJECT (ea_calitem));
+		cell_data = ea_cell_table_create (
+			n_cells / EA_CALENDAR_COLUMN_NUM,
+			EA_CALENDAR_COLUMN_NUM,
+			FALSE);
+		g_object_set_data (
+			G_OBJECT (ea_calitem),
+			"ea-calendar-cell-table", cell_data);
+	}
+	return cell_data;
+}
+
+static void
+ea_calendar_item_destory_cell_data (EaCalendarItem *ea_calitem)
+{
+	EaCellTable *cell_data;
+
+	g_return_if_fail (ea_calitem);
+
+	cell_data = g_object_get_data (
+		G_OBJECT (ea_calitem),
+		"ea-calendar-cell-table");
+	if (cell_data) {
+		g_object_set_data (
+			G_OBJECT (ea_calitem),
+			"ea-calendar-cell-table", NULL);
+		ea_cell_table_destroy (cell_data);
+	}
+}
+
+static gboolean
+ea_calendar_item_get_row_label (EaCalendarItem *ea_calitem,
+                                gint row,
+                                gchar *buffer,
+                                gint buffer_size)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	ECalendarItem *calitem;
+	gint index, week_num;
+	gint year, month, day;
+
+	g_return_val_if_fail (ea_calitem, FALSE);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return FALSE;
+
+	calitem = E_CALENDAR_ITEM (g_obj);
+
+	index = atk_table_get_index_at (ATK_TABLE (ea_calitem), row, 0);
+	if (!e_calendar_item_get_date_for_offset (calitem, index,
+						  &year, &month, &day))
+		return FALSE;
+
+	week_num = e_calendar_item_get_week_number (
+		calitem, day, month, year);
+
+	g_snprintf (buffer, buffer_size, "week number : %d", week_num);
+	return TRUE;
+}
+
+static gboolean
+ea_calendar_item_get_column_label (EaCalendarItem *ea_calitem,
+                                   gint column,
+                                   gchar *buffer,
+                                   gint buffer_size)
+{
+	AtkGObjectAccessible *atk_gobj;
+	GObject *g_obj;
+	const gchar *abbr_name;
+
+	g_return_val_if_fail (ea_calitem, FALSE);
+
+	atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
+	g_obj = atk_gobject_accessible_get_object (atk_gobj);
+	if (!g_obj)
+		return FALSE;
+
+	/* Columns are 0 = Monday ... 6 = Sunday */
+	abbr_name = e_get_weekday_name (column + 1, TRUE);
+	g_strlcpy (buffer, abbr_name, buffer_size);
+
+	return TRUE;
+}
+
+/* the coordinate the e-calendar canvas coord */
+gboolean
+e_calendar_item_get_day_extents (ECalendarItem *calitem,
+                                 gint year,
+                                 gint month,
+                                 gint date,
+                                 gint *x,
+                                 gint *y,
+                                 gint *width,
+                                 gint *height)
+{
+	GnomeCanvasItem *item;
+	GtkWidget *widget;
+	GtkStyle *style;
+	PangoFontDescription *font_desc;
+	PangoContext *pango_context;
+	PangoFontMetrics *font_metrics;
+	gint char_height, xthickness, ythickness, text_y;
+	gint new_year, new_month, num_months, months_offset;
+	gint month_x, month_y, month_cell_x, month_cell_y;
+	gint month_row, month_col;
+	gint day_row, day_col;
+	gint days_from_week_start;
+
+	g_return_val_if_fail (E_IS_CALENDAR_ITEM (calitem), FALSE);
+
+	item = GNOME_CANVAS_ITEM (calitem);
+	widget = GTK_WIDGET (item->canvas);
+	style = gtk_widget_get_style (widget);
+
+	/* Set up Pango prerequisites */
+	font_desc = calitem->font_desc;
+	if (!font_desc)
+		font_desc = style->font_desc;
+	pango_context = gtk_widget_get_pango_context (widget);
+	font_metrics = pango_context_get_metrics (
+		pango_context, font_desc,
+		pango_context_get_language (pango_context));
+
+	char_height =
+		PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) +
+		PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics));
+
+	xthickness = style->xthickness;
+	ythickness = style->ythickness;
+
+	new_year = year;
+	new_month = month;
+	e_calendar_item_normalize_date (calitem, &new_year, &new_month);
+	num_months = calitem->rows * calitem->cols;
+	months_offset = (new_year - calitem->year) * 12
+		+ new_month - calitem->month;
+
+	if (months_offset > num_months || months_offset < 0)
+		return FALSE;
+
+	month_row = months_offset / calitem->cols;
+	month_col = months_offset % calitem->cols;
+
+	month_x = item->x1 + xthickness + calitem->x_offset
+		+ month_col * calitem->month_width;
+	month_y = item->y1 + ythickness + month_row * calitem->month_height;
+
+	month_cell_x = month_x + E_CALENDAR_ITEM_XPAD_BEFORE_WEEK_NUMBERS
+		+ calitem->month_lpad + E_CALENDAR_ITEM_XPAD_BEFORE_CELLS;
+	text_y = month_y + ythickness * 2
+		+ E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME
+		+ char_height + E_CALENDAR_ITEM_YPAD_BELOW_MONTH_NAME
+		+ E_CALENDAR_ITEM_YPAD_ABOVE_DAY_LETTERS + calitem->month_tpad;
+
+	month_cell_y = text_y + char_height
+		+ E_CALENDAR_ITEM_YPAD_BELOW_DAY_LETTERS + 1
+		+ E_CALENDAR_ITEM_YPAD_ABOVE_CELLS;
+
+	days_from_week_start = e_calendar_item_get_n_days_from_week_start (
+		calitem, new_year, new_month);
+	day_row = (date + days_from_week_start - 1) / EA_CALENDAR_COLUMN_NUM;
+	day_col = (date + days_from_week_start - 1) % EA_CALENDAR_COLUMN_NUM;
+
+	*x = month_cell_x + day_col * calitem->cell_width;
+	*y = month_cell_y + day_row * calitem->cell_height;
+	*width = calitem->cell_width;
+	*height = calitem->cell_height;
+
+	return TRUE;
+}
+
+/* month is from 0 to 11 */
+gboolean
+e_calendar_item_get_date_for_offset (ECalendarItem *calitem,
+                                     gint day_offset,
+                                     gint *year,
+                                     gint *month,
+                                     gint *day)
+{
+	gint start_year, start_month, start_day;
+	gint end_year, end_month, end_day;
+	GDate *start_date;
+
+	g_return_val_if_fail (E_IS_CALENDAR_ITEM (calitem), FALSE);
+
+	if (!e_calendar_item_get_date_range (calitem, &start_year,
+					     &start_month, &start_day,
+					     &end_year, &end_month,
+					     &end_day))
+		return FALSE;
+
+	start_date = g_date_new_dmy (start_day, start_month + 1, start_year);
+
+	g_date_add_days (start_date, day_offset);
+
+	*year = g_date_get_year (start_date);
+	*month = g_date_get_month (start_date) - 1;
+	*day = g_date_get_day (start_date);
+
+	return TRUE;
+}
+
+/* the arg month is from 0 to 11 */
+static gboolean
+e_calendar_item_get_offset_for_date (ECalendarItem *calitem,
+                                     gint year,
+                                     gint month,
+                                     gint day,
+                                     gint *offset)
+{
+	gint start_year, start_month, start_day;
+	gint end_year, end_month, end_day;
+	GDate *start_date, *end_date;
+
+	*offset = 0;
+	g_return_val_if_fail (E_IS_CALENDAR_ITEM (calitem), FALSE);
+
+	if (!e_calendar_item_get_date_range (calitem, &start_year,
+					     &start_month, &start_day,
+					     &end_year, &end_month,
+					     &end_day))
+		return FALSE;
+
+	start_date = g_date_new_dmy (start_day, start_month + 1, start_year);
+	end_date = g_date_new_dmy (day, month + 1, year);
+
+	*offset = g_date_days_between (start_date, end_date);
+	g_free (start_date);
+	g_free (end_date);
+
+	return TRUE;
+}
+
+gint
+e_calendar_item_get_n_days_from_week_start (ECalendarItem *calitem,
+                                            gint year,
+                                            gint month)
+{
+	struct tm tmp_tm;
+	gint start_weekday, days_from_week_start;
+
+	memset (&tmp_tm, 0, sizeof (tmp_tm));
+	tmp_tm.tm_year = year - 1900;
+	tmp_tm.tm_mon = month;
+	tmp_tm.tm_mday = 1;
+	tmp_tm.tm_isdst = -1;
+	mktime (&tmp_tm);
+	start_weekday = (tmp_tm.tm_wday + 6) % 7;   /* 0 to 6 */
+	days_from_week_start = (start_weekday + 7 - calitem->week_start_day)
+		% 7;
+	return days_from_week_start;
+}
+
+static void
+ea_calendar_set_focus_object (EaCalendarItem *ea_calitem,
+                              AtkObject *item_cell)
+{
+	AtkStateSet *state_set, *old_state_set;
+	AtkObject *old_cell;
+
+	old_cell = (AtkObject *) g_object_get_data (
+		G_OBJECT (ea_calitem), "gail-focus-object");
+	if (old_cell && EA_IS_CALENDAR_CELL (old_cell)) {
+		old_state_set = atk_object_ref_state_set (old_cell);
+		atk_state_set_remove_state (old_state_set, ATK_STATE_FOCUSED);
+		g_object_unref (old_state_set);
+	}
+	if (old_cell)
+		g_object_unref (old_cell);
+
+	state_set = atk_object_ref_state_set (item_cell);
+	atk_state_set_add_state (state_set, ATK_STATE_FOCUSED);
+	g_object_set_data (G_OBJECT (ea_calitem), "gail-focus-object", item_cell);
+	g_object_unref (state_set);
+}