path: root/calendar/gui/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; 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:
 *      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 <libedataserver/e-source-list.h>
#include "config-data.h"

#define KEY_LAST_NOTIFICATION_TIME \
    "/apps/evolution/calendar/notify/last_notification_time"
#define KEY_PROGRAMS "/apps/evolution/calendar/notify/programs"

/* Whether we have initied ourselves by reading
 * the data from the configuration engine. */
static gboolean inited = FALSE;
static GConfClient *conf_client = NULL;
static ESourceList *calendar_source_list = NULL, *tasks_source_list = 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';
}

static void
do_cleanup (void)
{
    if (calendar_source_list) {
        g_object_unref (calendar_source_list);
        calendar_source_list = NULL;
    }

    if (tasks_source_list) {
        g_object_unref (tasks_source_list);
        tasks_source_list = NULL;
    }

    g_object_unref (conf_client);
    conf_client = NULL;

    inited = FALSE;
}

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

    inited = TRUE;

    conf_client = gconf_client_get_default ();
    if (!GCONF_IS_CLIENT (conf_client)) {
        inited = FALSE;
        return;
    }

    g_atexit ((GVoidFunc) do_cleanup);

    /* load the sources for calendars and tasks */
    calendar_source_list = e_source_list_new_for_gconf (conf_client,
                                "/apps/evolution/calendar/sources");
    tasks_source_list = e_source_list_new_for_gconf (conf_client,
                             "/apps/evolution/tasks/sources");

}

ESourceList *
config_data_get_calendars (const gchar *key)
{
    ESourceList *cal_sources;
    gboolean state;
    GSList *gconf_list;

    if (!inited)
        conf_client = gconf_client_get_default ();

    gconf_list = gconf_client_get_list (conf_client,
                        key,
                        GCONF_VALUE_STRING,
                        NULL);
    cal_sources = e_source_list_new_for_gconf (conf_client, key);

    if (cal_sources && g_slist_length (gconf_list)) {
        g_slist_foreach (gconf_list, (GFunc) g_free, NULL);
        g_slist_free (gconf_list);
        return cal_sources;
    }

    state = gconf_client_get_bool (conf_client,
                      "/apps/evolution/calendar/notify/notify_with_tray",
                      NULL);
    if (!state) /* Should be old client */ {
        GSList *source;
        gconf_client_set_bool (conf_client,
                      "/apps/evolution/calendar/notify/notify_with_tray",
                      TRUE,
                      NULL);
        source = gconf_client_get_list (conf_client,
                        "/apps/evolution/calendar/sources",
                        GCONF_VALUE_STRING,
                        NULL);
        gconf_client_set_list (conf_client,
                       key,
                       GCONF_VALUE_STRING,
                       source,
                       NULL);
        cal_sources = e_source_list_new_for_gconf (conf_client, key);

        if (source) {
            g_slist_foreach (source, (GFunc) g_free, NULL);
            g_slist_free (source);
        }
    }

    if (gconf_list) {
        g_slist_foreach (gconf_list, (GFunc) g_free, NULL);
        g_slist_free (gconf_list);
    }

    return cal_sources;

}

void
config_data_replace_string_list (const gchar *key,
                                 const gchar *old,
                                 const gchar *new)
{
    GSList *source, *tmp;

    if (!inited)
        conf_client = gconf_client_get_default ();

    source = gconf_client_get_list (conf_client,
                    key,
                    GCONF_VALUE_STRING,
                    NULL);

    for (tmp = source; tmp; tmp = tmp->next) {

        if (strcmp (tmp->data, old) == 0) {
            g_free (tmp->data);
            tmp->data = g_strdup ((gchar *) new);
            gconf_client_set_list (conf_client,
                           key,
                           GCONF_VALUE_STRING,
                           source,
                           NULL);
            break;
        }
    }

    if (source) {
        g_slist_foreach (source, (GFunc) g_free, NULL);
        g_slist_free (source);
    }
}

GConfClient *
config_data_get_conf_client (void)
{
    ensure_inited ();
    return conf_client;
}

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

    ensure_inited ();

    key = "/apps/evolution/calendar/display/use_system_timezone";
    if (gconf_client_get_bool (conf_client, key, NULL))
        location = e_cal_util_get_system_timezone_location ();
    else {
        key = "/apps/evolution/calendar/display/timezone";
        location = gconf_client_get_string (conf_client, key, NULL);
    }

    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 ()) {
        const gchar *key;

        key = "/apps/evolution/calendar/display/use_24hour_format";
        return gconf_client_get_bool (conf_client, key, NULL);
    }

    return TRUE;
}

gboolean
config_data_get_notify_with_tray (void)
{
    ensure_inited ();

    return gconf_client_get_bool (conf_client,
                      "/apps/evolution/calendar/notify/notify_with_tray",
                      NULL);
}

/**
 * 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)
{
    GConfClient *client;
    time_t current_t, now = time (NULL);

    g_return_if_fail (t != -1);

    if (cal) {
        ESource *source = e_client_get_source (E_CLIENT (cal));
        if (source) {
            const gchar *prop_str;
            GTimeVal curr_tv = {0};

            prop_str = e_source_get_property (source, "last-notified");
            if (!prop_str || !g_time_val_from_iso8601 (prop_str, &curr_tv))
                curr_tv.tv_sec = 0;

            if (t > (time_t) curr_tv.tv_sec || (time_t) curr_tv.tv_sec > now) {
                GTimeVal tmval = {0};
                gchar *as_text;

                tmval.tv_sec = (glong) t;
                as_text = g_time_val_to_iso8601 (&tmval);

                if (as_text) {
                    e_source_set_property (source, "last-notified", as_text);
                    g_free (as_text);
                    /* pass through, thus the global last notification time is also changed */
                }
            }
        }
    }

    if (!(client = config_data_get_conf_client ()))
        return;

    /* we only store the new notification time if it is bigger
     * than the already stored one */
    current_t = gconf_client_get_int (client, KEY_LAST_NOTIFICATION_TIME, NULL);
    if (t > current_t || current_t > now)
        gconf_client_set_int (client, KEY_LAST_NOTIFICATION_TIME, t, NULL);
}

/**
 * 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)
{
    GConfValue *value;
    GConfClient *client;

    if (cal) {
        ESource *source = e_client_get_source (E_CLIENT (cal));
        if (source) {
            const gchar *last_notified;

            GTimeVal tmval = {0};

            last_notified = e_source_get_property (
                source, "last-notified");

            if (last_notified && *last_notified &&
                g_time_val_from_iso8601 (last_notified, &tmval)) {
                time_t now = time (NULL), val = (time_t) tmval.tv_sec;

                if (val > now)
                    val = now;
                return val;
            }
        }
    }

    if (!(client = config_data_get_conf_client ()))
        return -1;

    value = gconf_client_get_without_default (
        client, KEY_LAST_NOTIFICATION_TIME, NULL);
    if (value) {
        time_t val, now;

        val = (time_t) gconf_value_get_int (value);
        now = time (NULL);

        if (val > now)
            val = now;

        return val;
    }

    return -1;
}

/**
 * config_data_save_blessed_program:
 * @program: a program name
 *
 * Saves a program name as "blessed"
 **/
void
config_data_save_blessed_program (const gchar *program)
{
    GConfClient *client;
    GSList *l;

    if (!(client = config_data_get_conf_client ()))
        return;

    l = gconf_client_get_list (client, KEY_PROGRAMS, GCONF_VALUE_STRING, NULL);
    l = g_slist_append (l, g_strdup (program));
    gconf_client_set_list (client, KEY_PROGRAMS, GCONF_VALUE_STRING, l, NULL);
    g_slist_foreach (l, (GFunc) g_free, NULL);
    g_slist_free (l);
}

/**
 * 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)
{
    GConfClient *client;
    GSList *l, *n;
    gboolean found = FALSE;

    if (!(client = config_data_get_conf_client ()))
        return FALSE;

    l = gconf_client_get_list (client, KEY_PROGRAMS, GCONF_VALUE_STRING, NULL);
    while (l) {
        n = l->next;
        if (!found)
            found = strcmp ((gchar *) l->data, program) == 0;
        g_free (l->data);
        g_slist_free_1 (l);
        l = n;
    }

    return found;
}

static gboolean can_debug = FALSE;
static GStaticRecMutex rec_mutex = G_STATIC_REC_MUTEX_INIT;

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_static_rec_mutex_lock (&rec_mutex);

    if (can_debug)
        return TRUE;

    g_static_rec_mutex_unlock (&rec_mutex);

    return FALSE;
}

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