calendar/gui/ea-day-view.c

   1 /*
   2  * This program is free software; you can redistribute it and/or
   3  * modify it under the terms of the GNU Lesser General Public
   4  * License as published by the Free Software Foundation; either
   5  * version 2 of the License, or (at your option) version 3.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  10  * Lesser General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU Lesser General Public
  13  * License along with the program; if not, see <http://www.gnu.org/licenses/>
  14  *
  15  *
  16  * Authors:
  17  *              Bolian Yin <bolian.yin@sun.com>
  18  *
  19  * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
  20  *
  21  */
  22
  23 #include "ea-day-view.h"
  24 #include "ea-cal-view-event.h"
  25
  26 #include "ea-calendar-helpers.h"
  27 #include "ea-gnome-calendar.h"
  28 #include <glib.h>
  29 #include <glib/gi18n.h>
  30
  31 /* backward-compatibility cruft */
  32 #include <e-util/gtk-compat.h>
  33
  34 static void ea_day_view_class_init (EaDayViewClass *klass);
  35
  36 static G_CONST_RETURN gchar * ea_day_view_get_name (AtkObject *accessible);
  37 static G_CONST_RETURN gchar * ea_day_view_get_description (AtkObject *accessible);
  38 static gint         ea_day_view_get_n_children      (AtkObject *obj);
  39 static AtkObject*   ea_day_view_ref_child           (AtkObject *obj,
  40                                                      gint i);
  41 static gpointer parent_class = NULL;
  42
  43 GType
  44 ea_day_view_get_type (void)
  45 {
  46         static GType type = 0;
  47         AtkObjectFactory *factory;
  48         GTypeQuery query;
  49         GType derived_atk_type;
  50
  51         if (!type) {
  52                 static GTypeInfo tinfo = {
  53                         sizeof (EaDayViewClass),
  54                         (GBaseInitFunc) NULL, /* base init */
  55                         (GBaseFinalizeFunc) NULL, /* base finalize */
  56                         (GClassInitFunc) ea_day_view_class_init, /* class init */
  57                         (GClassFinalizeFunc) NULL, /* class finalize */
  58                         NULL, /* class data */
  59                         sizeof (EaDayView), /* instance size */
  60                         0, /* nb preallocs */
  61                         (GInstanceInitFunc) NULL, /* instance init */
  62                         NULL /* value table */
  63                 };
  64
  65                 /*
  66                  * Figure out the size of the class and instance
  67                  * we are run-time deriving from (EaCalView, in this case)
  68                  *
  69                  * Note: we must still use run-time deriving here, because
  70                  * our parent class EaCalView is run-time deriving.
  71                  */
  72
  73                 factory = atk_registry_get_factory (atk_get_default_registry (),
  74                                                     e_calendar_view_get_type ());
  75                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
  76                 g_type_query (derived_atk_type, &query);
  77
  78                 tinfo.class_size = query.class_size;
  79                 tinfo.instance_size = query.instance_size;
  80
  81                 type = g_type_register_static (derived_atk_type,
  82                                                "EaDayView", &tinfo, 0);
  83         }
  84
  85         return type;
  86 }
  87
  88 static void
  89 ea_day_view_class_init (EaDayViewClass *klass)
  90 {
  91         AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
  92
  93         parent_class = g_type_class_peek_parent (klass);
  94
  95         class->get_name = ea_day_view_get_name;
  96         class->get_description = ea_day_view_get_description;
  97
  98         class->get_n_children = ea_day_view_get_n_children;
  99         class->ref_child = ea_day_view_ref_child;
 100 }
 101
 102 AtkObject*
 103 ea_day_view_new (GtkWidget *widget)
 104 {
 105         GObject *object;
 106         AtkObject *accessible;
 107
 108         g_return_val_if_fail (E_IS_DAY_VIEW (widget), NULL);
 109
 110         object = g_object_new (EA_TYPE_DAY_VIEW, NULL);
 111
 112         accessible = ATK_OBJECT (object);
 113         atk_object_initialize (accessible, widget);
 114
 115 #ifdef ACC_DEBUG
 116         printf ("EvoAcc: ea_day_view created %p\n", (gpointer)accessible);
 117 #endif
 118
 119         return accessible;
 120 }
 121
 122 static G_CONST_RETURN gchar *
 123 ea_day_view_get_name (AtkObject *accessible)
 124 {
 125         EDayView *day_view;
 126         GnomeCalendar *gcal;
 127         const gchar *label_text;
 128         GnomeCalendarViewType view_type;
 129         GtkWidget *widget;
 130         gint n_events;
 131         gchar *event_str, *name_str;
 132
 133         g_return_val_if_fail (EA_IS_DAY_VIEW (accessible), NULL);
 134
 135         widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
 136         if (widget == NULL)
 137                 return NULL;
 138
 139         day_view = E_DAY_VIEW (widget);
 140         gcal = e_calendar_view_get_calendar (E_CALENDAR_VIEW (day_view));
 141
 142         label_text = ea_gnome_calendar_get_label_description (gcal);
 143
 144         n_events = atk_object_get_n_accessible_children (accessible);
 145         /* the child main item is always there */
 146         --n_events;
 147         if (n_events >= 1)
 148                 /* To translators: Here, "It" is either like "Work Week View: July
 149                 10th - July 14th, 2006." or "Day View: Thursday July 13th, 2006." */
 150                 event_str = g_strdup_printf (
 151                         ngettext ("It has %d event.",
 152                         "It has %d events.", n_events), n_events);
 153         else
 154                 /* To translators: Here, "It" is either like "Work Week View: July
 155                 10th - July 14th, 2006." or "Day View: Thursday July 13th, 2006." */
 156                 event_str = g_strdup (_("It has no events."));
 157
 158         view_type = gnome_calendar_get_view (gcal);
 159         if (view_type == GNOME_CAL_WORK_WEEK_VIEW)
 160                 /* To translators: First %s is the week, for example "July 10th -
 161                 July 14th, 2006". Second %s is the number of events in this work
 162                 week, for example "It has %d event/events." or  "It has no events." */
 163                 name_str = g_strdup_printf (_("Work Week View: %s. %s"),
 164                                                 label_text, event_str);
 165         else
 166                 /* To translators: First %s is the day, for example "Thursday July
 167                 13th, 2006". Second %s is the number of events on this day, for
 168                 example "It has %d event/events." or  "It has no events." */
 169                 name_str = g_strdup_printf (_("Day View: %s. %s"),
 170                                                 label_text, event_str);
 171
 172         ATK_OBJECT_CLASS (parent_class)->set_name (accessible, name_str);
 173         g_free (name_str);
 174         g_free (event_str);
 175
 176         return accessible->name;
 177 }
 178
 179 static G_CONST_RETURN gchar *
 180 ea_day_view_get_description (AtkObject *accessible)
 181 {
 182         EDayView *day_view;
 183         GtkWidget *widget;
 184
 185         g_return_val_if_fail (EA_IS_DAY_VIEW (accessible), NULL);
 186
 187         widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
 188         if (widget == NULL)
 189                 return NULL;
 190
 191         day_view = E_DAY_VIEW (widget);
 192
 193         if (accessible->description)
 194                 return accessible->description;
 195         else {
 196                 GnomeCalendar *gcal;
 197                 GnomeCalendarViewType view_type;
 198
 199                 gcal = e_calendar_view_get_calendar (E_CALENDAR_VIEW (day_view));
 200                 view_type = gnome_calendar_get_view (gcal);
 201
 202                 if (view_type == GNOME_CAL_WORK_WEEK_VIEW)
 203                         return _("calendar view for a work week");
 204                 else
 205                         return _("calendar view for one or more days");
 206         }
 207 }
 208
 209 static gint
 210 ea_day_view_get_n_children (AtkObject *accessible)
 211 {
 212         EDayView *day_view;
 213         GtkWidget *widget;
 214         gint day;
 215         gint child_num = 0;
 216
 217         g_return_val_if_fail (EA_IS_DAY_VIEW (accessible), -1);
 218
 219         widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
 220         if (widget == NULL)
 221                 return -1;
 222
 223         day_view = E_DAY_VIEW (widget);
 224
 225         child_num += day_view->long_events->len;
 226
 227         for (day = 0; day < day_view->days_shown; day++) {
 228                 child_num += day_view->events[day]->len;
 229         }
 230
 231         /* "+1" for the main item */
 232         return child_num + 1;
 233 }
 234
 235 static AtkObject *
 236 ea_day_view_ref_child (AtkObject *accessible, gint index)
 237 {
 238         EDayView *day_view;
 239         gint child_num;
 240         gint day;
 241         AtkObject *atk_object = NULL;
 242         EDayViewEvent *event = NULL;
 243         GtkWidget *widget;
 244
 245         g_return_val_if_fail (EA_IS_DAY_VIEW (accessible), NULL);
 246
 247         child_num = atk_object_get_n_accessible_children (accessible);
 248         if (child_num <= 0 || index < 0 || index >= child_num)
 249                 return NULL;
 250
 251         widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
 252         if (widget == NULL)
 253                 return NULL;
 254
 255         day_view = E_DAY_VIEW (widget);
 256
 257         if (index == 0) {
 258                 /* index == 0 is the main item */
 259                 atk_object = atk_gobject_accessible_for_object (
 260                         G_OBJECT (day_view->main_canvas_item));
 261                 g_object_ref (atk_object);
 262         }
 263         else {
 264                 --index;
 265                 /* a long event */
 266                 if (index < day_view->long_events->len) {
 267                         event = &g_array_index (day_view->long_events,
 268                                                 EDayViewEvent, index);
 269                 }
 270                 else {
 271                         index -= day_view->long_events->len;
 272                         day = 0;
 273                         while (index >= day_view->events[day]->len) {
 274                                 index -= day_view->events[day]->len;
 275                                 ++day;
 276                         }
 277
 278                         event = &g_array_index (day_view->events[day],
 279                                                 EDayViewEvent, index);
 280                 }
 281                 if (event && event->canvas_item) {
 282                         /* Not use atk_gobject_accessible_for_object here,
 283                          * we need to do special thing here
 284                          */
 285                         atk_object = ea_calendar_helpers_get_accessible_for (event->canvas_item);
 286                         g_object_ref (atk_object);
 287                 }
 288         }
 289         return atk_object;
 290 }