e-util/ea-calendar-item.c

   1 /*
   2  * This program is free software; you can redistribute it and/or modify it
   3  * under the terms of the GNU Lesser General Public License as published by
   4  * the Free Software Foundation.
   5  *
   6  * This program is distributed in the hope that it will be useful, but
   7  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   8  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   9  * for more details.
  10  *
  11  * You should have received a copy of the GNU Lesser General Public License
  12  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  13  *
  14  *
  15  * Authors:
  16  *              Bolian Yin <bolian.yin@sun.com>
  17  *
  18  * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <time.h>
  28 #include <string.h>
  29 #include <libgnomecanvas/gnome-canvas.h>
  30 #include <glib/gi18n.h>
  31
  32 #include <libedataserver/libedataserver.h>
  33
  34 #include "ea-calendar-item.h"
  35 #include "ea-calendar-cell.h"
  36 #include "ea-cell-table.h"
  37
  38 #include "e-misc-utils.h"
  39
  40 #define EA_CALENDAR_COLUMN_NUM E_CALENDAR_COLS_PER_MONTH
  41
  42 /* EaCalendarItem */
  43 static void ea_calendar_item_class_init (EaCalendarItemClass *class);
  44 static void ea_calendar_item_finalize (GObject *object);
  45
  46 static const gchar * ea_calendar_item_get_name (AtkObject *accessible);
  47 static const gchar * ea_calendar_item_get_description (AtkObject *accessible);
  48 static gint ea_calendar_item_get_n_children (AtkObject *accessible);
  49 static AtkObject *ea_calendar_item_ref_child (AtkObject *accessible, gint index);
  50 static AtkStateSet * ea_calendar_item_ref_state_set (AtkObject *accessible);
  51
  52 /* atk table interface */
  53 static void atk_table_interface_init (AtkTableIface *iface);
  54 static gint table_interface_get_index_at (AtkTable *table,
  55                                           gint     row,
  56                                           gint     column);
  57 static gint table_interface_get_column_at_index (AtkTable *table,
  58                                                  gint     index);
  59 static gint table_interface_get_row_at_index (AtkTable *table,
  60                                               gint     index);
  61 static AtkObject * table_interface_ref_at (AtkTable *table,
  62                                           gint     row,
  63                                           gint     column);
  64 static gint table_interface_get_n_rows (AtkTable *table);
  65 static gint table_interface_get_n_columns (AtkTable *table);
  66 static gint table_interface_get_column_extent_at (AtkTable      *table,
  67                                                   gint          row,
  68                                                   gint          column);
  69 static gint table_interface_get_row_extent_at (AtkTable      *table,
  70                                                gint          row,
  71                                                gint          column);
  72
  73 static gboolean table_interface_is_row_selected (AtkTable *table,
  74                                                  gint     row);
  75 static gboolean table_interface_is_column_selected (AtkTable *table,
  76                                                     gint     row);
  77 static gboolean table_interface_is_selected (AtkTable *table,
  78                                              gint     row,
  79                                              gint     column);
  80 static gint table_interface_get_selected_rows (AtkTable *table,
  81                                                gint **rows_selected);
  82 static gint table_interface_get_selected_columns (AtkTable *table,
  83                                                   gint     **columns_selected);
  84 static gboolean table_interface_add_row_selection (AtkTable *table, gint row);
  85 static gboolean table_interface_remove_row_selection (AtkTable *table,
  86                                                       gint row);
  87 static gboolean table_interface_add_column_selection (AtkTable *table,
  88                                                       gint column);
  89 static gboolean table_interface_remove_column_selection (AtkTable *table,
  90                                                          gint column);
  91 static AtkObject * table_interface_get_row_header (AtkTable *table, gint row);
  92 static AtkObject * table_interface_get_column_header (AtkTable *table,
  93                                                      gint in_col);
  94 static AtkObject * table_interface_get_caption (AtkTable *table);
  95
  96 static const gchar *
  97 table_interface_get_column_description (AtkTable *table,
  98                                         gint in_col);
  99
 100 static const gchar *
 101 table_interface_get_row_description (AtkTable *table,
 102                                      gint row);
 103
 104 static AtkObject *table_interface_get_summary (AtkTable *table);
 105
 106 /* atk selection interface */
 107 static void atk_selection_interface_init (AtkSelectionIface *iface);
 108 static gboolean selection_interface_add_selection (AtkSelection *selection,
 109                                                    gint i);
 110 static gboolean selection_interface_clear_selection (AtkSelection *selection);
 111 static AtkObject *selection_interface_ref_selection (AtkSelection *selection,
 112                                                      gint i);
 113 static gint selection_interface_get_selection_count (AtkSelection *selection);
 114 static gboolean selection_interface_is_child_selected (AtkSelection *selection,
 115                                                        gint i);
 116
 117 /* callbacks */
 118 static void selection_preview_change_cb (ECalendarItem *calitem);
 119 static void date_range_changed_cb (ECalendarItem *calitem);
 120
 121 /* helpers */
 122 static EaCellTable *ea_calendar_item_get_cell_data (EaCalendarItem *ea_calitem);
 123 static void ea_calendar_item_destory_cell_data (EaCalendarItem *ea_calitem);
 124 static gboolean ea_calendar_item_get_column_label (EaCalendarItem *ea_calitem,
 125                                                    gint column,
 126                                                    gchar *buffer,
 127                                                    gint buffer_size);
 128 static gboolean ea_calendar_item_get_row_label (EaCalendarItem *ea_calitem,
 129                                                 gint row,
 130                                                 gchar *buffer,
 131                                                 gint buffer_size);
 132 static gboolean e_calendar_item_get_offset_for_date (ECalendarItem *calitem,
 133                                                      gint year,
 134                                                      gint month,
 135                                                      gint day,
 136                                                      gint *offset);
 137 static void ea_calendar_set_focus_object (EaCalendarItem *ea_calitem,
 138                                           AtkObject *item_cell);
 139
 140 #ifdef ACC_DEBUG
 141 static gint n_ea_calendar_item_created = 0;
 142 static gint n_ea_calendar_item_destroyed = 0;
 143 #endif
 144
 145 static gpointer parent_class = NULL;
 146
 147 GType
 148 ea_calendar_item_get_type (void)
 149 {
 150         static GType type = 0;
 151         AtkObjectFactory *factory;
 152         GTypeQuery query;
 153         GType derived_atk_type;
 154
 155         if (!type) {
 156                 static GTypeInfo tinfo = {
 157                         sizeof (EaCalendarItemClass),
 158                         (GBaseInitFunc) NULL, /* base init */
 159                         (GBaseFinalizeFunc) NULL, /* base finalize */
 160                         (GClassInitFunc) ea_calendar_item_class_init, /* class init */
 161                         (GClassFinalizeFunc) NULL, /* class finalize */
 162                         NULL, /* class data */
 163                         sizeof (EaCalendarItem), /* instance size */
 164                         0, /* nb preallocs */
 165                         (GInstanceInitFunc) NULL, /* instance init */
 166                         NULL /* value table */
 167                 };
 168
 169                 static const GInterfaceInfo atk_table_info = {
 170                         (GInterfaceInitFunc) atk_table_interface_init,
 171                         (GInterfaceFinalizeFunc) NULL,
 172                         NULL
 173                 };
 174                 static const GInterfaceInfo atk_selection_info = {
 175                         (GInterfaceInitFunc) atk_selection_interface_init,
 176                         (GInterfaceFinalizeFunc) NULL,
 177                         NULL
 178                 };
 179
 180                 /*
 181                  * Figure out the size of the class and instance
 182                  * we are run-time deriving from (GailCanvasItem, in this case)
 183                  */
 184
 185                 factory = atk_registry_get_factory (
 186                         atk_get_default_registry (),
 187                         GNOME_TYPE_CANVAS_ITEM);
 188                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
 189                 g_type_query (derived_atk_type, &query);
 190
 191                 tinfo.class_size = query.class_size;
 192                 tinfo.instance_size = query.instance_size;
 193
 194                 type = g_type_register_static (
 195                         derived_atk_type,
 196                         "EaCalendarItem", &tinfo, 0);
 197                 g_type_add_interface_static (
 198                         type, ATK_TYPE_TABLE,
 199                         &atk_table_info);
 200                 g_type_add_interface_static (
 201                         type, ATK_TYPE_SELECTION,
 202                         &atk_selection_info);
 203         }
 204
 205         return type;
 206 }
 207
 208 static void
 209 ea_calendar_item_class_init (EaCalendarItemClass *klass)
 210 {
 211         GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 212         AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
 213
 214         gobject_class->finalize = ea_calendar_item_finalize;
 215         parent_class = g_type_class_peek_parent (klass);
 216
 217         class->get_name = ea_calendar_item_get_name;
 218         class->get_description = ea_calendar_item_get_description;
 219         class->ref_state_set = ea_calendar_item_ref_state_set;
 220
 221         class->get_n_children = ea_calendar_item_get_n_children;
 222         class->ref_child = ea_calendar_item_ref_child;
 223 }
 224
 225 AtkObject *
 226 ea_calendar_item_new (GObject *obj)
 227 {
 228         gpointer object;
 229         AtkObject *atk_object;
 230         AtkObject *item_cell;
 231
 232         g_return_val_if_fail (E_IS_CALENDAR_ITEM (obj), NULL);
 233         object = g_object_new (EA_TYPE_CALENDAR_ITEM, NULL);
 234         atk_object = ATK_OBJECT (object);
 235         atk_object_initialize (atk_object, obj);
 236         atk_object->role = ATK_ROLE_CALENDAR;
 237
 238         item_cell = atk_selection_ref_selection (
 239                 ATK_SELECTION (atk_object), 0);
 240         if (item_cell)
 241                 ea_calendar_set_focus_object (EA_CALENDAR_ITEM (atk_object), item_cell);
 242
 243 #ifdef ACC_DEBUG
 244         ++n_ea_calendar_item_created;
 245         g_print (
 246                 "ACC_DEBUG: n_ea_calendar_item_created = %d\n",
 247                 n_ea_calendar_item_created);
 248 #endif
 249         /* connect signal handlers */
 250         g_signal_connect (
 251                 obj, "selection_preview_changed",
 252                 G_CALLBACK (selection_preview_change_cb), atk_object);
 253         g_signal_connect (
 254                 obj, "date_range_changed",
 255                 G_CALLBACK (date_range_changed_cb), atk_object);
 256
 257         return atk_object;
 258 }
 259
 260 static void
 261 ea_calendar_item_finalize (GObject *object)
 262 {
 263         EaCalendarItem *ea_calitem;
 264
 265         g_return_if_fail (EA_IS_CALENDAR_ITEM (object));
 266
 267         ea_calitem = EA_CALENDAR_ITEM (object);
 268
 269         /* Free the allocated cell data */
 270         ea_calendar_item_destory_cell_data (ea_calitem);
 271
 272         G_OBJECT_CLASS (parent_class)->finalize (object);
 273 #ifdef ACC_DEBUG
 274         ++n_ea_calendar_item_destroyed;
 275         printf (
 276                 "ACC_DEBUG: n_ea_calendar_item_destroyed = %d\n",
 277                 n_ea_calendar_item_destroyed);
 278 #endif
 279 }
 280
 281 static const gchar *
 282 ea_calendar_item_get_name (AtkObject *accessible)
 283 {
 284         GObject *g_obj;
 285         ECalendarItem *calitem;
 286         gint start_year, start_month, start_day;
 287         gint end_year, end_month, end_day;
 288         gchar *name_str = NULL;
 289         gchar buffer_start[128] = "";
 290         gchar buffer_end[128] = "";
 291         struct tm day_start = { 0 };
 292         struct tm day_end = { 0 };
 293
 294         g_return_val_if_fail (EA_IS_CALENDAR_ITEM (accessible), NULL);
 295
 296         g_obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (accessible));
 297         if (!g_obj)
 298                 return NULL;
 299         g_return_val_if_fail (E_IS_CALENDAR_ITEM (g_obj), NULL);
 300
 301         calitem = E_CALENDAR_ITEM (g_obj);
 302         if (e_calendar_item_get_date_range (
 303                 calitem,
 304                 &start_year, &start_month, &start_day,
 305                 &end_year, &end_month, &end_day)) {
 306
 307                 day_start.tm_year = start_year - 1900;
 308                 day_start.tm_mon = start_month;
 309                 day_start.tm_mday = start_day;
 310                 day_start.tm_isdst = -1;
 311
 312                 e_utf8_strftime (
 313                         buffer_start, sizeof (buffer_start),
 314                         _("%d %B %Y"), &day_start);
 315
 316                 day_end.tm_year = end_year - 1900;
 317                 day_end.tm_mon = end_month;
 318                 day_end.tm_mday = end_day;
 319                 day_end.tm_isdst = -1;
 320
 321                 e_utf8_strftime (
 322                         buffer_end, sizeof (buffer_end),
 323                         _("%d %B %Y"), &day_end);
 324
 325                 name_str = g_strdup_printf (
 326                         _("Calendar: from %s to %s"),
 327                         buffer_start, buffer_end);
 328         }
 329
 330 #if 0
 331         if (e_calendar_item_get_selection (calitem, &select_start, &select_end)) {
 332                 GDate select_start, select_end;
 333                 gint year1, year2, month1, month2, day1, day2;
 334
 335                 year1 = g_date_get_year (&select_start);
 336                 month1 = g_date_get_month (&select_start);
 337                 day1 = g_date_get_day (&select_start);
 338
 339                 year2 = g_date_get_year (&select_end);
 340                 month2 = g_date_get_month (&select_end);
 341                 day2 = g_date_get_day (&select_end);
 342
 343                 sprintf (
 344                         new_name + strlen (new_name),
 345                         " : current selection: from %d-%d-%d to %d-%d-%d.",
 346                         year1, month1, day1,
 347                         year2, month2, day2);
 348         }
 349 #endif
 350
 351         ATK_OBJECT_CLASS (parent_class)->set_name (accessible, name_str);
 352         g_free (name_str);
 353
 354         return accessible->name;
 355 }
 356
 357 static const gchar *
 358 ea_calendar_item_get_description (AtkObject *accessible)
 359 {
 360         if (accessible->description)
 361                 return accessible->description;
 362
 363         return _("evolution calendar item");
 364 }
 365
 366 static AtkStateSet *
 367 ea_calendar_item_ref_state_set (AtkObject *accessible)
 368 {
 369         AtkStateSet *state_set;
 370         GObject *g_obj;
 371
 372         state_set = ATK_OBJECT_CLASS (parent_class)->ref_state_set (accessible);
 373         g_obj = atk_gobject_accessible_get_object (
 374                 ATK_GOBJECT_ACCESSIBLE (accessible));
 375         if (!g_obj)
 376                 return state_set;
 377
 378         atk_state_set_add_state (state_set, ATK_STATE_ENABLED);
 379         atk_state_set_add_state (state_set, ATK_STATE_SENSITIVE);
 380
 381         return state_set;
 382 }
 383
 384 static gint
 385 ea_calendar_item_get_n_children (AtkObject *accessible)
 386 {
 387         AtkGObjectAccessible *atk_gobj;
 388         GObject *g_obj;
 389         ECalendarItem *calitem;
 390         gint n_children = 0;
 391         gint start_year, start_month, start_day;
 392         gint end_year, end_month, end_day;
 393         GDate *start_date, *end_date;
 394
 395         g_return_val_if_fail (EA_IS_CALENDAR_ITEM (accessible), -1);
 396
 397         atk_gobj = ATK_GOBJECT_ACCESSIBLE (accessible);
 398         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 399         if (!g_obj)
 400                 return -1;
 401
 402         calitem = E_CALENDAR_ITEM (g_obj);
 403         if (!e_calendar_item_get_date_range (calitem, &start_year,
 404                                              &start_month, &start_day,
 405                                              &end_year, &end_month,
 406                                              &end_day))
 407                 return 0;
 408
 409         start_date = g_date_new_dmy (start_day, start_month + 1, start_year);
 410         end_date = g_date_new_dmy (end_day, end_month + 1, end_year);
 411
 412         n_children = g_date_days_between (start_date, end_date) + 1;
 413         g_free (start_date);
 414         g_free (end_date);
 415         return n_children;
 416 }
 417
 418 static AtkObject *
 419 ea_calendar_item_ref_child (AtkObject *accessible,
 420                             gint index)
 421 {
 422         AtkGObjectAccessible *atk_gobj;
 423         GObject *g_obj;
 424         ECalendarItem *calitem;
 425         gint n_children;
 426         ECalendarCell *cell;
 427         EaCellTable *cell_data;
 428         EaCalendarItem *ea_calitem;
 429
 430         g_return_val_if_fail (EA_IS_CALENDAR_ITEM (accessible), NULL);
 431
 432         atk_gobj = ATK_GOBJECT_ACCESSIBLE (accessible);
 433         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 434         if (!g_obj)
 435                 return NULL;
 436
 437         calitem = E_CALENDAR_ITEM (g_obj);
 438
 439         n_children = ea_calendar_item_get_n_children (accessible);
 440         if (index < 0 || index >= n_children)
 441                 return NULL;
 442
 443         ea_calitem = EA_CALENDAR_ITEM (accessible);
 444         cell_data = ea_calendar_item_get_cell_data (ea_calitem);
 445         if (!cell_data)
 446                 return NULL;
 447
 448         cell = ea_cell_table_get_cell_at_index (cell_data, index);
 449         if (!cell) {
 450                 cell = e_calendar_cell_new (
 451                         calitem,
 452                         index / EA_CALENDAR_COLUMN_NUM,
 453                         index % EA_CALENDAR_COLUMN_NUM);
 454                 ea_cell_table_set_cell_at_index (cell_data, index, cell);
 455                 g_object_unref (cell);
 456         }
 457
 458 #ifdef ACC_DEBUG
 459         g_print (
 460                 "AccDebug: ea_calendar_item children[%d]=%p\n", index,
 461                 (gpointer) cell);
 462 #endif
 463         return g_object_ref (atk_gobject_accessible_for_object (G_OBJECT (cell)));
 464 }
 465
 466 /* atk table interface */
 467
 468 static void
 469 atk_table_interface_init (AtkTableIface *iface)
 470 {
 471         g_return_if_fail (iface != NULL);
 472
 473         iface->ref_at = table_interface_ref_at;
 474
 475         iface->get_n_rows = table_interface_get_n_rows;
 476         iface->get_n_columns = table_interface_get_n_columns;
 477         iface->get_index_at = table_interface_get_index_at;
 478         iface->get_column_at_index = table_interface_get_column_at_index;
 479         iface->get_row_at_index = table_interface_get_row_at_index;
 480         iface->get_column_extent_at = table_interface_get_column_extent_at;
 481         iface->get_row_extent_at = table_interface_get_row_extent_at;
 482
 483         iface->is_selected = table_interface_is_selected;
 484         iface->get_selected_rows = table_interface_get_selected_rows;
 485         iface->get_selected_columns = table_interface_get_selected_columns;
 486         iface->is_row_selected = table_interface_is_row_selected;
 487         iface->is_column_selected = table_interface_is_column_selected;
 488         iface->add_row_selection = table_interface_add_row_selection;
 489         iface->remove_row_selection = table_interface_remove_row_selection;
 490         iface->add_column_selection = table_interface_add_column_selection;
 491         iface->remove_column_selection = table_interface_remove_column_selection;
 492
 493         iface->get_row_header = table_interface_get_row_header;
 494         iface->get_column_header = table_interface_get_column_header;
 495         iface->get_caption = table_interface_get_caption;
 496         iface->get_summary = table_interface_get_summary;
 497         iface->get_row_description = table_interface_get_row_description;
 498         iface->get_column_description = table_interface_get_column_description;
 499 }
 500
 501 static AtkObject *
 502 table_interface_ref_at (AtkTable *table,
 503                         gint row,
 504                         gint column)
 505 {
 506         gint index;
 507
 508         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 509         index = EA_CALENDAR_COLUMN_NUM * row + column;
 510         return ea_calendar_item_ref_child (ATK_OBJECT (ea_calitem), index);
 511 }
 512
 513 static gint
 514 table_interface_get_n_rows (AtkTable *table)
 515 {
 516         AtkGObjectAccessible *atk_gobj;
 517         GObject *g_obj;
 518         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 519         gint n_children;
 520
 521         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 522         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 523         if (!g_obj)
 524                 return -1;
 525
 526         n_children = ea_calendar_item_get_n_children (ATK_OBJECT (ea_calitem));
 527         return (n_children - 1) / EA_CALENDAR_COLUMN_NUM + 1;
 528 }
 529
 530 static gint
 531 table_interface_get_n_columns (AtkTable *table)
 532 {
 533         AtkGObjectAccessible *atk_gobj;
 534         GObject *g_obj;
 535         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 536
 537         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 538         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 539         if (!g_obj)
 540                 return -1;
 541
 542         return EA_CALENDAR_COLUMN_NUM;
 543 }
 544
 545 static gint
 546 table_interface_get_index_at (AtkTable *table,
 547                               gint row,
 548                               gint column)
 549 {
 550         AtkGObjectAccessible *atk_gobj;
 551         GObject *g_obj;
 552         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 553
 554         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 555         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 556         if (!g_obj)
 557                 return -1;
 558
 559         return row * EA_CALENDAR_COLUMN_NUM + column;
 560 }
 561
 562 static gint
 563 table_interface_get_column_at_index (AtkTable *table,
 564                                      gint index)
 565 {
 566         AtkGObjectAccessible *atk_gobj;
 567         GObject *g_obj;
 568         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 569         gint n_children;
 570
 571         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 572         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 573         if (!g_obj)
 574                 return -1;
 575
 576         n_children = ea_calendar_item_get_n_children (ATK_OBJECT (ea_calitem));
 577         if (index >= 0 && index < n_children)
 578                 return index % EA_CALENDAR_COLUMN_NUM;
 579         return -1;
 580 }
 581
 582 static gint
 583 table_interface_get_row_at_index (AtkTable *table,
 584                                   gint index)
 585 {
 586         AtkGObjectAccessible *atk_gobj;
 587         GObject *g_obj;
 588         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 589         gint n_children;
 590
 591         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 592         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 593         if (!g_obj)
 594                 return -1;
 595
 596         n_children = ea_calendar_item_get_n_children (ATK_OBJECT (ea_calitem));
 597         if (index >= 0 && index < n_children)
 598                 return index / EA_CALENDAR_COLUMN_NUM;
 599         return -1;
 600 }
 601
 602 static gint
 603 table_interface_get_column_extent_at (AtkTable *table,
 604                                       gint row,
 605                                       gint column)
 606 {
 607         AtkGObjectAccessible *atk_gobj;
 608         GObject *g_obj;
 609         ECalendarItem *calitem;
 610         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 611
 612         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 613         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 614         if (!g_obj)
 615                 return FALSE;
 616
 617         calitem = E_CALENDAR_ITEM (g_obj);
 618         return calitem->cell_width;
 619 }
 620
 621 static gint
 622 table_interface_get_row_extent_at (AtkTable *table,
 623                                    gint row,
 624                                    gint column)
 625 {
 626         AtkGObjectAccessible *atk_gobj;
 627         GObject *g_obj;
 628         ECalendarItem *calitem;
 629         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 630
 631         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 632         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 633         if (!g_obj)
 634                 return FALSE;
 635
 636         calitem = E_CALENDAR_ITEM (g_obj);
 637         return calitem->cell_height;
 638 }
 639
 640 /* any day in the row is selected, the row is selected */
 641 static gboolean
 642 table_interface_is_row_selected (AtkTable *table,
 643                                  gint row)
 644 {
 645         AtkGObjectAccessible *atk_gobj;
 646         GObject *g_obj;
 647         gint n_rows;
 648         ECalendarItem *calitem;
 649         gint row_index_start, row_index_end;
 650         gint sel_index_start, sel_index_end;
 651
 652         GDate start_date, end_date;
 653
 654         g_return_val_if_fail (EA_IS_CALENDAR_ITEM (table), FALSE);
 655
 656         atk_gobj = ATK_GOBJECT_ACCESSIBLE (table);
 657         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 658         if (!g_obj)
 659                 return FALSE;
 660
 661         n_rows = table_interface_get_n_rows (table);
 662         if (row < 0 || row >= n_rows)
 663                 return FALSE;
 664
 665         row_index_start = row * EA_CALENDAR_COLUMN_NUM;
 666         row_index_end = row_index_start + EA_CALENDAR_COLUMN_NUM - 1;
 667
 668         calitem = E_CALENDAR_ITEM (g_obj);
 669         if (!e_calendar_item_get_selection (calitem, &start_date, &end_date))
 670                 return FALSE;
 671
 672         e_calendar_item_get_offset_for_date (calitem,
 673                                              g_date_get_year (&start_date),
 674                                              g_date_get_month (&start_date),
 675                                              g_date_get_day (&start_date),
 676                                              &sel_index_start);
 677         e_calendar_item_get_offset_for_date (calitem,
 678                                              g_date_get_year (&end_date),
 679                                              g_date_get_month (&end_date),
 680                                              g_date_get_day (&end_date),
 681                                              &sel_index_end);
 682
 683         if ((sel_index_start < row_index_start &&
 684              sel_index_end >= row_index_start) ||
 685             (sel_index_start >= row_index_start &&
 686              sel_index_start <= row_index_end))
 687             return TRUE;
 688         return FALSE;
 689 }
 690
 691 static gboolean
 692 table_interface_is_selected (AtkTable *table,
 693                              gint row,
 694                              gint column)
 695 {
 696         AtkGObjectAccessible *atk_gobj;
 697         GObject *g_obj;
 698         gint n_rows, n_columns;
 699         ECalendarItem *calitem;
 700         gint index;
 701         gint sel_index_start, sel_index_end;
 702
 703         GDate start_date, end_date;
 704
 705         g_return_val_if_fail (EA_IS_CALENDAR_ITEM (table), FALSE);
 706
 707         atk_gobj = ATK_GOBJECT_ACCESSIBLE (table);
 708         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 709         if (!g_obj)
 710                 return FALSE;
 711
 712         n_rows = table_interface_get_n_rows (table);
 713         if (row < 0 || row >= n_rows)
 714                 return FALSE;
 715         n_columns = table_interface_get_n_columns (table);
 716         if (column < 0 || column >= n_columns)
 717                 return FALSE;
 718
 719         index = table_interface_get_index_at (table, row, column);
 720
 721         calitem = E_CALENDAR_ITEM (g_obj);
 722         if (!e_calendar_item_get_selection (calitem, &start_date, &end_date))
 723                 return FALSE;
 724
 725         e_calendar_item_get_offset_for_date (calitem,
 726                                              g_date_get_year (&start_date),
 727                                              g_date_get_month (&start_date),
 728                                              g_date_get_day (&start_date),
 729                                              &sel_index_start);
 730         e_calendar_item_get_offset_for_date (calitem,
 731                                              g_date_get_year (&end_date),
 732                                              g_date_get_month (&end_date),
 733                                              g_date_get_day (&end_date), &sel_index_end);
 734
 735         if (sel_index_start <= index && sel_index_end >= index)
 736             return TRUE;
 737         return FALSE;
 738 }
 739
 740 static gboolean
 741 table_interface_is_column_selected (AtkTable *table,
 742                                     gint column)
 743 {
 744         return FALSE;
 745 }
 746
 747 static gint
 748 table_interface_get_selected_rows (AtkTable *table,
 749                                    gint **rows_selected)
 750 {
 751         *rows_selected = NULL;
 752         return -1;
 753 }
 754
 755 static gint
 756 table_interface_get_selected_columns (AtkTable *table,
 757                                       gint **columns_selected)
 758 {
 759         *columns_selected = NULL;
 760         return -1;
 761 }
 762
 763 static gboolean
 764 table_interface_add_row_selection (AtkTable *table,
 765                                    gint row)
 766 {
 767         return FALSE;
 768 }
 769
 770 static gboolean
 771 table_interface_remove_row_selection (AtkTable *table,
 772                                       gint row)
 773 {
 774         return FALSE;
 775 }
 776
 777 static gboolean
 778 table_interface_add_column_selection (AtkTable *table,
 779                                       gint column)
 780 {
 781         return FALSE;
 782 }
 783
 784 static gboolean
 785 table_interface_remove_column_selection (AtkTable *table,
 786                                          gint column)
 787 {
 788         /* FIXME: NOT IMPLEMENTED */
 789         return FALSE;
 790 }
 791
 792 static AtkObject *
 793 table_interface_get_row_header (AtkTable *table,
 794                                 gint row)
 795 {
 796         /* FIXME: NOT IMPLEMENTED */
 797         return NULL;
 798 }
 799
 800 static AtkObject *
 801 table_interface_get_column_header (AtkTable *table,
 802                                    gint in_col)
 803 {
 804         /* FIXME: NOT IMPLEMENTED */
 805         return NULL;
 806 }
 807
 808 static AtkObject *
 809 table_interface_get_caption (AtkTable *table)
 810 {
 811         /* FIXME: NOT IMPLEMENTED */
 812         return NULL;
 813 }
 814
 815 static const gchar *
 816 table_interface_get_column_description (AtkTable *table,
 817                                         gint in_col)
 818 {
 819         AtkGObjectAccessible *atk_gobj;
 820         GObject *g_obj;
 821         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 822         const gchar *description = NULL;
 823         EaCellTable *cell_data;
 824         gint n_columns;
 825
 826         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 827         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 828         if (!g_obj)
 829                 return NULL;
 830
 831         n_columns = table_interface_get_n_columns (table);
 832         if (in_col < 0 || in_col >= n_columns)
 833                 return NULL;
 834         cell_data = ea_calendar_item_get_cell_data (ea_calitem);
 835         if (!cell_data)
 836                 return NULL;
 837
 838         description = ea_cell_table_get_column_label (cell_data, in_col);
 839         if (!description) {
 840                 gchar buffer[128] = "column description";
 841                 ea_calendar_item_get_column_label (
 842                         ea_calitem, in_col,
 843                         buffer, sizeof (buffer));
 844                 ea_cell_table_set_column_label (cell_data, in_col, buffer);
 845                 description = ea_cell_table_get_column_label (
 846                         cell_data, in_col);
 847         }
 848         return description;
 849 }
 850
 851 static const gchar *
 852 table_interface_get_row_description (AtkTable *table,
 853                                      gint row)
 854 {
 855         AtkGObjectAccessible *atk_gobj;
 856         GObject *g_obj;
 857         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (table);
 858         const gchar *description = NULL;
 859         EaCellTable *cell_data;
 860         gint n_rows;
 861
 862         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 863         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 864         if (!g_obj)
 865                 return NULL;
 866
 867         n_rows = table_interface_get_n_rows (table);
 868         if (row < 0 || row >= n_rows)
 869                 return NULL;
 870         cell_data = ea_calendar_item_get_cell_data (ea_calitem);
 871         if (!cell_data)
 872                 return NULL;
 873
 874         description = ea_cell_table_get_row_label (cell_data, row);
 875         if (!description) {
 876                 gchar buffer[128] = "row description";
 877                 ea_calendar_item_get_row_label (
 878                         ea_calitem, row,
 879                                                 buffer, sizeof (buffer));
 880                 ea_cell_table_set_row_label (cell_data, row, buffer);
 881                 description = ea_cell_table_get_row_label (
 882                         cell_data,
 883                         row);
 884         }
 885         return description;
 886 }
 887
 888 static AtkObject *
 889 table_interface_get_summary (AtkTable *table)
 890 {
 891         /* FIXME: NOT IMPLEMENTED */
 892         return NULL;
 893 }
 894
 895 /* atkselection interface */
 896
 897 static void
 898 atk_selection_interface_init (AtkSelectionIface *iface)
 899 {
 900         g_return_if_fail (iface != NULL);
 901
 902         iface->add_selection = selection_interface_add_selection;
 903         iface->clear_selection = selection_interface_clear_selection;
 904         iface->ref_selection = selection_interface_ref_selection;
 905         iface->get_selection_count = selection_interface_get_selection_count;
 906         iface->is_child_selected = selection_interface_is_child_selected;
 907 }
 908
 909 static gboolean
 910 selection_interface_add_selection (AtkSelection *selection,
 911                                    gint index)
 912 {
 913         AtkGObjectAccessible *atk_gobj;
 914         GObject *g_obj;
 915         ECalendarItem *calitem;
 916         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
 917         gint year, month, day;
 918         GDate start_date, end_date;
 919
 920         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 921         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 922         if (!g_obj)
 923                 return FALSE;
 924
 925         calitem = E_CALENDAR_ITEM (g_obj);
 926         if (!e_calendar_item_get_date_for_offset (calitem, index,
 927                                                   &year, &month, &day))
 928                 return FALSE;
 929
 930         /* FIXME: not support mulit-selection */
 931         g_date_set_dmy (&start_date, day, month + 1, year);
 932         end_date = start_date;
 933         e_calendar_item_set_selection (calitem, &start_date, &end_date);
 934         return TRUE;
 935 }
 936
 937 static gboolean
 938 selection_interface_clear_selection (AtkSelection *selection)
 939 {
 940         AtkGObjectAccessible *atk_gobj;
 941         GObject *g_obj;
 942         ECalendarItem *calitem;
 943         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
 944
 945         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 946         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 947         if (!g_obj)
 948                 return FALSE;
 949
 950         calitem = E_CALENDAR_ITEM (g_obj);
 951         e_calendar_item_set_selection (calitem, NULL, NULL);
 952
 953         return TRUE;
 954 }
 955
 956 static AtkObject *
 957 selection_interface_ref_selection (AtkSelection *selection,
 958                                    gint i)
 959 {
 960         GObject *g_obj;
 961         ECalendarItem *calitem;
 962         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
 963         gint count, sel_offset;
 964         GDate start_date, end_date;
 965
 966         count = selection_interface_get_selection_count (selection);
 967         if (i < 0 || i >= count)
 968                 return NULL;
 969
 970         g_obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (ea_calitem));
 971
 972         calitem = E_CALENDAR_ITEM (g_obj);
 973         if (!e_calendar_item_get_selection (calitem, &start_date, &end_date))
 974                 return NULL;
 975         if (!e_calendar_item_get_offset_for_date (calitem,
 976                                                   g_date_get_year (&start_date),
 977                                                   g_date_get_month (&start_date) - 1,
 978                                                   g_date_get_day (&start_date),
 979                                                   &sel_offset))
 980                 return NULL;
 981
 982         return ea_calendar_item_ref_child (ATK_OBJECT (selection), sel_offset + i);
 983 }
 984
 985 static gint
 986 selection_interface_get_selection_count (AtkSelection *selection)
 987 {
 988         AtkGObjectAccessible *atk_gobj;
 989         GObject *g_obj;
 990         ECalendarItem *calitem;
 991         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
 992         GDate start_date, end_date;
 993
 994         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
 995         g_obj = atk_gobject_accessible_get_object (atk_gobj);
 996         if (!g_obj)
 997                 return 0;
 998
 999         calitem = E_CALENDAR_ITEM (g_obj);
1000         if (e_calendar_item_get_selection (calitem, &start_date, &end_date))
1001                 return g_date_days_between (&start_date, &end_date) + 1;
1002         else
1003                 return 0;
1004 }
1005
1006 static gboolean
1007 selection_interface_is_child_selected (AtkSelection *selection,
1008                                        gint index)
1009 {
1010         AtkGObjectAccessible *atk_gobj;
1011         GObject *g_obj;
1012         EaCalendarItem * ea_calitem = EA_CALENDAR_ITEM (selection);
1013         gint row, column, n_children;
1014
1015         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
1016         g_obj = atk_gobject_accessible_get_object (atk_gobj);
1017         if (!g_obj)
1018                 return FALSE;
1019
1020         n_children = atk_object_get_n_accessible_children (ATK_OBJECT (selection));
1021         if (index < 0 || index >= n_children)
1022                 return FALSE;
1023
1024         row = index / EA_CALENDAR_COLUMN_NUM;
1025         column = index % EA_CALENDAR_COLUMN_NUM;
1026
1027         return table_interface_is_selected (ATK_TABLE (selection), row, column);
1028 }
1029
1030 /* callbacks */
1031
1032 static void
1033 selection_preview_change_cb (ECalendarItem *calitem)
1034 {
1035         AtkObject *atk_obj;
1036         AtkObject *item_cell;
1037
1038         g_return_if_fail (E_IS_CALENDAR_ITEM (calitem));
1039         atk_obj = atk_gobject_accessible_for_object (G_OBJECT (calitem));
1040         ea_calendar_item_destory_cell_data (EA_CALENDAR_ITEM (atk_obj));
1041
1042         /* only deal with the first selected child, for now */
1043         item_cell = atk_selection_ref_selection (
1044                 ATK_SELECTION (atk_obj), 0);
1045
1046         if (item_cell)
1047                 ea_calendar_set_focus_object (EA_CALENDAR_ITEM (atk_obj), item_cell);
1048
1049         g_signal_emit_by_name (
1050                 atk_obj,
1051                 "active-descendant-changed",
1052                 item_cell);
1053         g_signal_emit_by_name (atk_obj, "selection_changed");
1054 }
1055
1056 static void
1057 date_range_changed_cb (ECalendarItem *calitem)
1058 {
1059         AtkObject *atk_obj;
1060         AtkObject *item_cell;
1061
1062         g_return_if_fail (E_IS_CALENDAR_ITEM (calitem));
1063         atk_obj = atk_gobject_accessible_for_object (G_OBJECT (calitem));
1064         ea_calendar_item_destory_cell_data (EA_CALENDAR_ITEM (atk_obj));
1065
1066         item_cell = atk_selection_ref_selection (
1067                 ATK_SELECTION (atk_obj), 0);
1068         if (item_cell)
1069                 ea_calendar_set_focus_object (EA_CALENDAR_ITEM (atk_obj), item_cell);
1070
1071         g_signal_emit_by_name (atk_obj, "model_changed");
1072 }
1073
1074 /* helpers */
1075
1076 static EaCellTable *
1077 ea_calendar_item_get_cell_data (EaCalendarItem *ea_calitem)
1078 {
1079         AtkGObjectAccessible *atk_gobj;
1080         GObject *g_obj;
1081         EaCellTable *cell_data;
1082
1083         g_return_val_if_fail (ea_calitem, NULL);
1084
1085         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
1086         g_obj = atk_gobject_accessible_get_object (atk_gobj);
1087         if (!g_obj)
1088                 return NULL;
1089
1090         cell_data = g_object_get_data (
1091                 G_OBJECT (ea_calitem),
1092                 "ea-calendar-cell-table");
1093
1094         if (!cell_data) {
1095                 gint n_cells = ea_calendar_item_get_n_children (ATK_OBJECT (ea_calitem));
1096                 cell_data = ea_cell_table_create (
1097                         n_cells / EA_CALENDAR_COLUMN_NUM,
1098                         EA_CALENDAR_COLUMN_NUM,
1099                         FALSE);
1100                 g_object_set_data_full (
1101                         G_OBJECT (ea_calitem),
1102                         "ea-calendar-cell-table", cell_data,
1103                         (GDestroyNotify) ea_cell_table_destroy);
1104         }
1105         return cell_data;
1106 }
1107
1108 static void
1109 ea_calendar_item_destory_cell_data (EaCalendarItem *ea_calitem)
1110 {
1111         g_return_if_fail (ea_calitem);
1112
1113         g_object_set_data (
1114                 G_OBJECT (ea_calitem),
1115                 "ea-calendar-cell-table", NULL);
1116 }
1117
1118 static gboolean
1119 ea_calendar_item_get_row_label (EaCalendarItem *ea_calitem,
1120                                 gint row,
1121                                 gchar *buffer,
1122                                 gint buffer_size)
1123 {
1124         AtkGObjectAccessible *atk_gobj;
1125         GObject *g_obj;
1126         ECalendarItem *calitem;
1127         gint index, week_num;
1128         gint year, month, day;
1129
1130         g_return_val_if_fail (ea_calitem, FALSE);
1131
1132         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
1133         g_obj = atk_gobject_accessible_get_object (atk_gobj);
1134         if (!g_obj)
1135                 return FALSE;
1136
1137         calitem = E_CALENDAR_ITEM (g_obj);
1138
1139         index = table_interface_get_index_at (ATK_TABLE (ea_calitem), row, 0);
1140         if (!e_calendar_item_get_date_for_offset (calitem, index,
1141                                                   &year, &month, &day))
1142                 return FALSE;
1143
1144         week_num = e_calendar_item_get_week_number (
1145                 calitem, day, month, year);
1146
1147         g_snprintf (buffer, buffer_size, "week number : %d", week_num);
1148         return TRUE;
1149 }
1150
1151 static gboolean
1152 ea_calendar_item_get_column_label (EaCalendarItem *ea_calitem,
1153                                    gint column,
1154                                    gchar *buffer,
1155                                    gint buffer_size)
1156 {
1157         AtkGObjectAccessible *atk_gobj;
1158         GObject *g_obj;
1159         const gchar *abbr_name;
1160
1161         g_return_val_if_fail (ea_calitem, FALSE);
1162
1163         atk_gobj = ATK_GOBJECT_ACCESSIBLE (ea_calitem);
1164         g_obj = atk_gobject_accessible_get_object (atk_gobj);
1165         if (!g_obj)
1166                 return FALSE;
1167
1168         /* Columns are 0 = Monday ... 6 = Sunday */
1169         abbr_name = e_get_weekday_name (column + 1, TRUE);
1170         g_strlcpy (buffer, abbr_name, buffer_size);
1171
1172         return TRUE;
1173 }
1174
1175 /* the coordinate the e-calendar canvas coord */
1176 gboolean
1177 e_calendar_item_get_day_extents (ECalendarItem *calitem,
1178                                  gint year,
1179                                  gint month,
1180                                  gint date,
1181                                  gint *x,
1182                                  gint *y,
1183                                  gint *width,
1184                                  gint *height)
1185 {
1186         GnomeCanvasItem *item;
1187         GtkWidget *widget;
1188         GtkBorder padding;
1189         PangoContext *pango_context;
1190         PangoFontMetrics *font_metrics;
1191         gint char_height, xthickness, ythickness, text_y;
1192         gint new_year, new_month, num_months, months_offset;
1193         gint month_x, month_y, month_cell_x, month_cell_y;
1194         gint month_row, month_col;
1195         gint day_row, day_col;
1196         gint days_from_week_start;
1197
1198         g_return_val_if_fail (E_IS_CALENDAR_ITEM (calitem), FALSE);
1199
1200         item = GNOME_CANVAS_ITEM (calitem);
1201         widget = GTK_WIDGET (item->canvas);
1202         gtk_style_context_get_padding (gtk_widget_get_style_context (widget), 0, &padding);
1203
1204         /* Set up Pango prerequisites */
1205         pango_context = gtk_widget_get_pango_context (widget);
1206         font_metrics = pango_context_get_metrics (
1207                 pango_context, calitem->font_desc,
1208                 pango_context_get_language (pango_context));
1209
1210         char_height =
1211                 PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) +
1212                 PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics));
1213
1214         xthickness = padding.left;
1215         ythickness = padding.top;
1216
1217         new_year = year;
1218         new_month = month;
1219         e_calendar_item_normalize_date (calitem, &new_year, &new_month);
1220         num_months = calitem->rows * calitem->cols;
1221         months_offset = (new_year - calitem->year) * 12
1222                 + new_month - calitem->month;
1223
1224         if (months_offset > num_months || months_offset < 0)
1225                 return FALSE;
1226
1227         month_row = months_offset / calitem->cols;
1228         month_col = months_offset % calitem->cols;
1229
1230         month_x = item->x1 + xthickness + calitem->x_offset
1231                 + month_col * calitem->month_width;
1232         month_y = item->y1 + ythickness + month_row * calitem->month_height;
1233
1234         month_cell_x = month_x + E_CALENDAR_ITEM_XPAD_BEFORE_WEEK_NUMBERS
1235                 + calitem->month_lpad + E_CALENDAR_ITEM_XPAD_BEFORE_CELLS;
1236         text_y = month_y + ythickness * 2
1237                 + E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME
1238                 + char_height + E_CALENDAR_ITEM_YPAD_BELOW_MONTH_NAME
1239                 + E_CALENDAR_ITEM_YPAD_ABOVE_DAY_LETTERS + calitem->month_tpad;
1240
1241         month_cell_y = text_y + char_height
1242                 + E_CALENDAR_ITEM_YPAD_BELOW_DAY_LETTERS + 1
1243                 + E_CALENDAR_ITEM_YPAD_ABOVE_CELLS;
1244
1245         days_from_week_start = e_calendar_item_get_n_days_from_week_start (
1246                 calitem, new_year, new_month);
1247         day_row = (date + days_from_week_start - 1) / EA_CALENDAR_COLUMN_NUM;
1248         day_col = (date + days_from_week_start - 1) % EA_CALENDAR_COLUMN_NUM;
1249
1250         *x = month_cell_x + day_col * calitem->cell_width;
1251         *y = month_cell_y + day_row * calitem->cell_height;
1252         *width = calitem->cell_width;
1253         *height = calitem->cell_height;
1254
1255         return TRUE;
1256 }
1257
1258 /* month is from 0 to 11 */
1259 gboolean
1260 e_calendar_item_get_date_for_offset (ECalendarItem *calitem,
1261                                      gint day_offset,
1262                                      gint *year,
1263                                      gint *month,
1264                                      gint *day)
1265 {
1266         gint start_year, start_month, start_day;
1267         gint end_year, end_month, end_day;
1268         GDate *start_date;
1269
1270         g_return_val_if_fail (E_IS_CALENDAR_ITEM (calitem), FALSE);
1271
1272         if (!e_calendar_item_get_date_range (calitem, &start_year,
1273                                              &start_month, &start_day,
1274                                              &end_year, &end_month,
1275                                              &end_day))
1276                 return FALSE;
1277
1278         start_date = g_date_new_dmy (start_day, start_month + 1, start_year);
1279
1280         g_date_add_days (start_date, day_offset);
1281
1282         *year = g_date_get_year (start_date);
1283         *month = g_date_get_month (start_date) - 1;
1284         *day = g_date_get_day (start_date);
1285
1286         return TRUE;
1287 }
1288
1289 gboolean
1290 e_calendar_item_get_date_for_cell (ECalendarItem *calitem,
1291                                      gint row,
1292                                      gint column,
1293                                      gint *year,
1294                                      gint *month,
1295                                      gint *day)
1296 {
1297         gint index = table_interface_get_index_at (ATK_TABLE (calitem), row, column);
1298
1299         return e_calendar_item_get_date_for_offset (calitem, index, year, month, day);
1300 }
1301
1302 /* the arg month is from 0 to 11 */
1303 static gboolean
1304 e_calendar_item_get_offset_for_date (ECalendarItem *calitem,
1305                                      gint year,
1306                                      gint month,
1307                                      gint day,
1308                                      gint *offset)
1309 {
1310         gint start_year, start_month, start_day;
1311         gint end_year, end_month, end_day;
1312         GDate *start_date, *end_date;
1313
1314         *offset = 0;
1315         g_return_val_if_fail (E_IS_CALENDAR_ITEM (calitem), FALSE);
1316
1317         if (!e_calendar_item_get_date_range (calitem, &start_year,
1318                                              &start_month, &start_day,
1319                                              &end_year, &end_month,
1320                                              &end_day))
1321                 return FALSE;
1322
1323         start_date = g_date_new_dmy (start_day, start_month + 1, start_year);
1324         end_date = g_date_new_dmy (day, month + 1, year);
1325
1326         *offset = g_date_days_between (start_date, end_date);
1327         g_free (start_date);
1328         g_free (end_date);
1329
1330         return TRUE;
1331 }
1332
1333 gint
1334 e_calendar_item_get_n_days_from_week_start (ECalendarItem *calitem,
1335                                             gint year,
1336                                             gint month)
1337 {
1338         GDateWeekday weekday;
1339         struct tm tmp_tm;
1340
1341         memset (&tmp_tm, 0, sizeof (tmp_tm));
1342         tmp_tm.tm_year = year - 1900;
1343         tmp_tm.tm_mon = month;
1344         tmp_tm.tm_mday = 1;
1345         tmp_tm.tm_isdst = -1;
1346         mktime (&tmp_tm);
1347
1348         weekday = e_weekday_from_tm_wday (tmp_tm.tm_wday);
1349
1350         return e_weekday_get_days_between (calitem->week_start_day, weekday);
1351 }
1352
1353 static void
1354 ea_calendar_set_focus_object (EaCalendarItem *ea_calitem,
1355                               AtkObject *item_cell)
1356 {
1357         AtkStateSet *state_set, *old_state_set;
1358         AtkObject *old_cell;
1359
1360         old_cell = (AtkObject *) g_object_get_data (
1361                 G_OBJECT (ea_calitem), "gail-focus-object");
1362         if (old_cell && EA_IS_CALENDAR_CELL (old_cell)) {
1363                 old_state_set = atk_object_ref_state_set (old_cell);
1364                 atk_state_set_remove_state (old_state_set, ATK_STATE_FOCUSED);
1365                 g_object_unref (old_state_set);
1366         }
1367         if (old_cell)
1368                 g_object_unref (old_cell);
1369
1370         state_set = atk_object_ref_state_set (item_cell);
1371         atk_state_set_add_state (state_set, ATK_STATE_FOCUSED);
1372         g_object_set_data (G_OBJECT (ea_calitem), "gail-focus-object", item_cell);
1373         g_object_unref (state_set);
1374 }