path: root/a11y/calendar/ea-cal-view.c

/*
 * 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)
 *
 */

#include "ea-cal-view.h"
#include "ea-calendar-helpers.h"
#include "e-day-view.h"
#include "e-week-view.h"
#include "calendar-commands.h"
#include "goto.h"
#include <glib.h>
#include <glib/gi18n.h>

static void ea_cal_view_class_init (EaCalViewClass *klass);

static AtkObject* ea_cal_view_get_parent (AtkObject *accessible);
static void ea_cal_view_real_initialize (AtkObject *accessible, gpointer data);

static void ea_cal_view_event_changed_cb (ECalendarView *cal_view,
                                          ECalendarViewEvent *event, gpointer data);
static void ea_cal_view_event_added_cb (ECalendarView *cal_view,
                                        ECalendarViewEvent *event, gpointer data);

static gboolean idle_dates_changed (gpointer data);
static void ea_cal_view_dates_change_cb (GnomeCalendar *gcal, gpointer data);

static void atk_action_interface_init (AtkActionIface *iface);
static gboolean action_interface_do_action (AtkAction *action, gint i);
static gint action_interface_get_n_actions (AtkAction *action);
static G_CONST_RETURN gchar*
action_interface_get_description(AtkAction *action, gint i);
static G_CONST_RETURN gchar*
action_interface_get_keybinding (AtkAction *action, gint i);
static G_CONST_RETURN gchar*
action_interface_action_get_name(AtkAction *action, gint i);

static gpointer parent_class = NULL;

GType
ea_cal_view_get_type (void)
{
    static GType type = 0;
    AtkObjectFactory *factory;
    GTypeQuery query;
    GType derived_atk_type;

    if (!type) {
        static GTypeInfo tinfo = {
            sizeof (EaCalViewClass),
            (GBaseInitFunc) NULL, /* base init */
            (GBaseFinalizeFunc) NULL, /* base finalize */
            (GClassInitFunc) ea_cal_view_class_init, /* class init */
            (GClassFinalizeFunc) NULL, /* class finalize */
            NULL, /* class data */
            sizeof (EaCalView), /* instance size */
            0, /* nb preallocs */
            (GInstanceInitFunc) NULL, /* instance init */
            NULL /* value table */
        };

        static const GInterfaceInfo atk_action_info = {
            (GInterfaceInitFunc) atk_action_interface_init,
            (GInterfaceFinalizeFunc) NULL,
            NULL
        };

        /*
         * Figure out the size of the class and instance
         * we are run-time deriving from (GailWidget, in this case)
         */

        factory = atk_registry_get_factory (atk_get_default_registry (),
                            GTK_TYPE_WIDGET);
        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,
                           "EaCalView", &tinfo, 0);
        g_type_add_interface_static (type, ATK_TYPE_ACTION,
                         &atk_action_info);
    }

    return type;
}

static void
ea_cal_view_class_init (EaCalViewClass *klass)
{
    AtkObjectClass *class = ATK_OBJECT_CLASS (klass);

    parent_class = g_type_class_peek_parent (klass);

    class->get_parent = ea_cal_view_get_parent;
    class->initialize = ea_cal_view_real_initialize;
}

AtkObject*
ea_cal_view_new (GtkWidget *widget)
{
    GObject *object;
    AtkObject *accessible;

    g_return_val_if_fail (E_IS_CALENDAR_VIEW (widget), NULL);

    object = g_object_new (EA_TYPE_CAL_VIEW, NULL);

    accessible = ATK_OBJECT (object);
    atk_object_initialize (accessible, widget);

    return accessible;
}

static void
ea_cal_view_real_initialize (AtkObject *accessible, gpointer data)
{
    ECalendarView *cal_view;
    GnomeCalendar *gcal;
    static AtkRole role = ATK_ROLE_INVALID;

    g_return_if_fail (EA_IS_CAL_VIEW (accessible));
    g_return_if_fail (E_IS_CALENDAR_VIEW (data));

        ATK_OBJECT_CLASS (parent_class)->initialize (accessible, data);
    if (role == ATK_ROLE_INVALID)
        role = atk_role_register ("Calendar View");
    accessible->role = role;
    cal_view = E_CALENDAR_VIEW (data);

    /* add listener for event_changed, event_added
     * we don't need to listen on event_removed. When the e_text
     * of the event is removed, the cal_view_event will go to the state
     * of "defunct" (changed by weak ref callback of atkgobjectaccessible
     */
    g_signal_connect (G_OBJECT(cal_view), "event_changed",
              G_CALLBACK (ea_cal_view_event_changed_cb), NULL);
    g_signal_connect (G_OBJECT(cal_view), "event_added",
              G_CALLBACK (ea_cal_view_event_added_cb), NULL);

    /* listen for date changes of calendar */
    gcal = e_calendar_view_get_calendar (cal_view);

    if (gcal)
        g_signal_connect (gcal, "dates_shown_changed",
                  G_CALLBACK (ea_cal_view_dates_change_cb),
                  accessible);
}

static AtkObject*
ea_cal_view_get_parent (AtkObject *accessible)
{
    ECalendarView *cal_view;
    GnomeCalendar *gnomeCalendar;

    g_return_val_if_fail (EA_IS_CAL_VIEW (accessible), NULL);

    if (!GTK_ACCESSIBLE (accessible)->widget)
        return NULL;
    cal_view = E_CALENDAR_VIEW (GTK_ACCESSIBLE (accessible)->widget);

    gnomeCalendar = e_calendar_view_get_calendar (cal_view);

    return gtk_widget_get_accessible (GTK_WIDGET(gnomeCalendar));
}

static void
ea_cal_view_event_changed_cb (ECalendarView *cal_view, ECalendarViewEvent *event,
                              gpointer data)
{
    AtkObject *atk_obj;
    AtkObject *event_atk_obj = NULL;

    g_return_if_fail (E_IS_CALENDAR_VIEW (cal_view));

    atk_obj = gtk_widget_get_accessible (GTK_WIDGET(cal_view));
    if (!EA_IS_CAL_VIEW (atk_obj))
        return;

    if ((E_IS_DAY_VIEW (cal_view)) && event && event->canvas_item) {
        event_atk_obj =
            ea_calendar_helpers_get_accessible_for (event->canvas_item);
    }
    else if ((E_IS_WEEK_VIEW (cal_view)) && event) {
        EWeekViewEventSpan *span;
        EWeekViewEvent *week_view_event = (EWeekViewEvent *)event;
        EWeekView *week_view = E_WEEK_VIEW (cal_view);
        /* get the first span of the event */
        span = &g_array_index (week_view->spans, EWeekViewEventSpan,
                       week_view_event->spans_index);
        if (span && span->text_item)
            event_atk_obj = ea_calendar_helpers_get_accessible_for (span->text_item);
    }
    if (event_atk_obj) {
#ifdef ACC_DEBUG
        printf ("AccDebug: event=%p changed\n", (void *)event);
#endif
        g_object_notify (G_OBJECT(event_atk_obj), "accessible-name");
        g_signal_emit_by_name (event_atk_obj, "visible_data_changed");
    }

}

static void
ea_cal_view_event_added_cb (ECalendarView *cal_view, ECalendarViewEvent *event,
                            gpointer data)
{
    AtkObject *atk_obj;
    AtkObject *event_atk_obj = NULL;
    gint index;

    g_return_if_fail (E_IS_CALENDAR_VIEW (cal_view));

    atk_obj = gtk_widget_get_accessible (GTK_WIDGET(cal_view));
    if (!EA_IS_CAL_VIEW (atk_obj))
        return;

    if ((E_IS_DAY_VIEW (cal_view)) && event && event->canvas_item) {
        event_atk_obj =
            ea_calendar_helpers_get_accessible_for (event->canvas_item);
    }
    else if ((E_IS_WEEK_VIEW (cal_view)) && event) {
        EWeekViewEventSpan *span;
        EWeekViewEvent *week_view_event = (EWeekViewEvent *)event;
        EWeekView *week_view = E_WEEK_VIEW (cal_view);
        /* get the first span of the event */
        span = &g_array_index (week_view->spans, EWeekViewEventSpan,
                       week_view_event->spans_index);
        if (span && span->text_item)
            event_atk_obj = ea_calendar_helpers_get_accessible_for (span->text_item);

    }
    if (event_atk_obj) {
        index = atk_object_get_index_in_parent (event_atk_obj);
        if (index < 0)
            return;
#ifdef ACC_DEBUG
        printf ("AccDebug: event=%p added\n", (void *)event);
#endif
        g_signal_emit_by_name (atk_obj, "children_changed::add",
                       index, event_atk_obj, NULL);
    }
}

static gboolean
idle_dates_changed (gpointer data)
{
    AtkObject *ea_cal_view;

    g_return_val_if_fail (data, FALSE);
    g_return_val_if_fail (EA_IS_CAL_VIEW (data), FALSE);

    ea_cal_view = ATK_OBJECT(data);

    if (ea_cal_view->name) {
        g_free (ea_cal_view->name);
        ea_cal_view->name = NULL;
    }
    g_object_notify (G_OBJECT (ea_cal_view), "accessible-name");
    g_signal_emit_by_name (ea_cal_view, "visible_data_changed");
    g_signal_emit_by_name (ea_cal_view, "children_changed", NULL, NULL, NULL);
#ifdef ACC_DEBUG
    printf ("AccDebug: cal view date changed\n");
#endif

    return FALSE;
}

static void
ea_cal_view_dates_change_cb (GnomeCalendar *gcal, gpointer data)
{
    g_idle_add (idle_dates_changed, data);
}

/* atk action interface */

#define CAL_VIEW_ACTION_NUM 5

static const char * action_name [CAL_VIEW_ACTION_NUM] = {
    N_("New Appointment"),
    N_("New All Day Event"),
    N_("New Meeting"),
    N_("Go to Today"),
    N_("Go to Date")
};

static void
atk_action_interface_init (AtkActionIface *iface)
{
    g_return_if_fail (iface != NULL);

    iface->do_action = action_interface_do_action;
    iface->get_n_actions = action_interface_get_n_actions;
    iface->get_description = action_interface_get_description;
    iface->get_keybinding = action_interface_get_keybinding;
    iface->get_name = action_interface_action_get_name;
}

static gboolean
action_interface_do_action (AtkAction *action, gint index)
{
    GtkWidget *widget;
    gboolean return_value = TRUE;
    time_t dtstart, dtend;
    ECalendarView *cal_view;

    widget = GTK_ACCESSIBLE (action)->widget;
    if (widget == NULL)
        /*
         * State is defunct
         */
        return FALSE;

    if (!GTK_WIDGET_IS_SENSITIVE (widget) || !GTK_WIDGET_VISIBLE (widget))
        return FALSE;

    cal_view = E_CALENDAR_VIEW (widget);
     switch (index) {
     case 0:
         /* New Appointment */
         e_calendar_view_new_appointment (cal_view);
         break;
     case 1:
         /* New All Day Event */
         e_calendar_view_get_selected_time_range (cal_view,
                             &dtstart, &dtend);
         e_calendar_view_new_appointment_for (cal_view,
                         dtstart, dtend, TRUE, FALSE);
         break;
     case 2:
         /* New Meeting */
         e_calendar_view_get_selected_time_range (cal_view,
                             &dtstart, &dtend);
         e_calendar_view_new_appointment_for (cal_view,
                         dtstart, dtend, FALSE, TRUE);
         break;
     case 3:
         /* Go to today */
         break;
         calendar_goto_today (e_calendar_view_get_calendar (cal_view));
     case 4:
         /* Go to date */
         goto_dialog (e_calendar_view_get_calendar (cal_view));
         break;
     default:
         return_value = FALSE;
         break;
     }
     return return_value;
}

static gint
action_interface_get_n_actions (AtkAction *action)
{
    return CAL_VIEW_ACTION_NUM;
}

static G_CONST_RETURN gchar*
action_interface_get_description(AtkAction *action, gint index)
{
    return action_interface_action_get_name (action, index);
}

static G_CONST_RETURN gchar*
action_interface_get_keybinding (AtkAction *action, gint index)
{
    GtkWidget *widget;

    widget = GTK_ACCESSIBLE (action)->widget;
    if (widget == NULL)
        /*
         * State is defunct
         */
        return NULL;

    if (!GTK_WIDGET_IS_SENSITIVE (widget) || !GTK_WIDGET_VISIBLE (widget))
        return NULL;

     switch (index) {
     case 0:
         /* New Appointment */
         return "<Alt>fna;<Control>n";
     case 1:
         /* New Event */
         return "<Alt>fnd;<Shift><Control>d";
     case 2:
         /* New Meeting */
         return "<Alt>fne;<Shift><Control>e";
     case 3:
         /* Go to today */
         return "<Alt>vt;<Alt><Control>t";
     case 4:
         /* Go to date */
         return "<Alt>vd;<Alt><Control>g";
     default:
         break;
     }
     return NULL;
}

static G_CONST_RETURN gchar*
action_interface_action_get_name(AtkAction *action, gint i)
{
    if (i >= 0 && i < CAL_VIEW_ACTION_NUM)
        return action_name [i];
    return NULL;
}