path: root/calendar/alarm-notify/config-data.c

/*
 * Evolution calendar - Configuration values for the alarm notification daemon
 *
 * 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.
 *
 * 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 General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 *
 * Authors:
 *      Federico Mena-Quintero <federico@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>
#include "config-data.h"

/* Whether we have initied ourselves by reading
 * the data from the configuration engine. */
static GSettings *calendar_settings = NULL;

/* Copied from ../calendar-config.c; returns whether the locale has 'am' and
 * 'pm' strings defined.
 */
static gboolean
locale_supports_12_hour_format (void)
{
    gchar s[16];
    time_t t = 0;

    strftime (s, sizeof s, "%p", gmtime (&t));
    return s[0] != '\0';
}

void
config_data_cleanup (void)
{
    if (calendar_settings)
        g_object_unref (calendar_settings);
    calendar_settings = NULL;
}

/* Ensures that the configuration values have been read */
static void
ensure_inited (void)
{
    if (calendar_settings)
        return;

    calendar_settings = g_settings_new ("org.gnome.evolution.calendar");
}

icaltimezone *
config_data_get_timezone (void)
{
    gchar *location;
    icaltimezone *local_timezone;

    ensure_inited ();

    if (g_settings_get_boolean (calendar_settings, "use-system-timezone"))
        location = e_cal_util_get_system_timezone_location ();
    else {
        location = g_settings_get_string (calendar_settings, "timezone");
    }

    if (location && location[0])
        local_timezone = icaltimezone_get_builtin_timezone (location);
    else
        local_timezone = icaltimezone_get_utc_timezone ();

    g_free (location);

    return local_timezone;
}

gboolean
config_data_get_24_hour_format (void)
{
    ensure_inited ();

    if (locale_supports_12_hour_format ()) {
        return g_settings_get_boolean (calendar_settings, "use-24hour-format");
    }

    return TRUE;
}

gboolean
config_data_get_notify_with_tray (void)
{
    ensure_inited ();

    return g_settings_get_boolean (calendar_settings, "notify-with-tray");
}

static void
source_written_cb (GObject *source_object,
                   GAsyncResult *result,
                   gpointer user_data)
{
    GError *error = NULL;

    e_source_write_finish (E_SOURCE (source_object), result, &error);

    if (error != NULL) {
        g_warning (
            "Failed to write source changes: %s",
            error->message);
        g_error_free (error);
    }
}

/**
 * config_data_set_last_notification_time:
 * @t: A time value.
 *
 * Saves the last notification time so that it can be fetched the next time the
 * alarm daemon is run.  This way the daemon can show alarms that should have
 * triggered while it was not running.
 **/
void
config_data_set_last_notification_time (ECalClient *cal,
                                        time_t t)
{
    time_t current_t, now = time (NULL);

    g_return_if_fail (t != -1);

    if (cal != NULL) {
        ESource *source;
        ESourceAlarms *extension;
        GTimeVal tv = {0};
        const gchar *extension_name;
        gchar *iso8601;

        source = e_client_get_source (E_CLIENT (cal));
        extension_name = E_SOURCE_EXTENSION_ALARMS;
        extension = e_source_get_extension (source, extension_name);

        iso8601 = (gchar *) e_source_alarms_get_last_notified (extension);
        if (iso8601 != NULL)
            g_time_val_from_iso8601 (iso8601, &tv);

        if (t > (time_t) tv.tv_sec || (time_t) tv.tv_sec > now) {
            tv.tv_sec = (glong) t;
            iso8601 = g_time_val_to_iso8601 (&tv);
            e_source_alarms_set_last_notified (extension, iso8601);
            g_free (iso8601);

            e_source_write (source, NULL, source_written_cb, NULL);
        }
    }

    /* we only store the new notification time if it is bigger
     * than the already stored one */
    current_t = g_settings_get_int (calendar_settings, "last-notification-time");
    if (t > current_t || current_t > now)
        g_settings_set_int (calendar_settings, "last-notification-time", t);
}

/**
 * config_data_get_last_notification_time:
 *
 * Queries the last saved value for alarm notification times.
 *
 * Return value: The last saved value, or -1 if no value had been saved before.
 **/
time_t
config_data_get_last_notification_time (ECalClient *cal)
{
    time_t value, now;

    if (cal != NULL) {
        ESource *source;
        ESourceAlarms *extension;
        GTimeVal tmval = {0};
        const gchar *extension_name;
        const gchar *last_notified;
        time_t now, val;

        source = e_client_get_source (E_CLIENT (cal));
        extension_name = E_SOURCE_EXTENSION_ALARMS;

        if (!e_source_has_extension (source, extension_name))
            goto skip;

        extension = e_source_get_extension (source, extension_name);
        last_notified = e_source_alarms_get_last_notified (extension);

        if (last_notified == NULL || *last_notified == '\0')
            goto skip;

        if (!g_time_val_from_iso8601 (last_notified, &tmval))
            goto skip;

        now = time (NULL);
        val = (time_t) tmval.tv_sec;

        if (val > now)
            val = now;

        return val;
    }

skip:
    value = g_settings_get_int (calendar_settings, "last-notification-time");
    now = time (NULL);
    if (value > now)
        value = now;

    return value;
}

/**
 * config_data_save_blessed_program:
 * @program: a program name
 *
 * Saves a program name as "blessed"
 **/
void
config_data_save_blessed_program (const gchar *program)
{
    gchar **list;
    gint i;
    GPtrArray *array = g_ptr_array_new ();

    list = g_settings_get_strv (calendar_settings, "notify-programs");
    for (i = 0; i < g_strv_length (list); i++)
        g_ptr_array_add (array, list[i]);

    g_ptr_array_add (array, (gpointer) program);
    g_ptr_array_add (array, NULL);

    g_settings_set_strv (
        calendar_settings, "notify-programs",
        (const gchar *const *) array->pdata);

    g_strfreev (list);
    g_ptr_array_free (array, TRUE);
}

/**
 * config_data_is_blessed_program:
 * @program: a program name
 *
 * Checks to see if a program is blessed
 *
 * Return value: TRUE if program is blessed, FALSE otherwise
 **/
gboolean
config_data_is_blessed_program (const gchar *program)
{
    gchar **list;
    gint i = 0;
    gboolean found = FALSE;

    list = g_settings_get_strv (calendar_settings, "notify-programs");
    if (!list)
        return FALSE;

    while (list[i] != NULL) {
        if (!found)
            found = strcmp ((gchar *) list[i], program) == 0;
        i++;
    }

    g_strfreev (list);

    return found;
}

static gboolean can_debug = FALSE;
static GRecMutex rec_mutex;

void
config_data_init_debugging (void)
{
    can_debug = g_getenv ("ALARMS_DEBUG") != NULL;
}

/* returns whether started debugging;
 * call config_data_stop_debugging() when started and you are done with it
 */
gboolean
config_data_start_debugging (void)
{
    g_rec_mutex_lock (&rec_mutex);

    if (can_debug)
        return TRUE;

    g_rec_mutex_unlock (&rec_mutex);

    return FALSE;
}

void
config_data_stop_debugging (void)
{
    g_rec_mutex_unlock (&rec_mutex);
}