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/* location-gnome-clock.c -- GNOME Panel Clock location provider source
This file is part of Redshift.
Redshift is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Redshift 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 General Public License
along with Redshift. If not, see <http://www.gnu.org/licenses/>.
Copyright (c) 2010 Jon Lund Steffensen <jonlst@gmail.com>
*/
#include <stdio.h>
#include <string.h>
#include <gconf/gconf-client.h>
#include "location-gnome-clock.h"
#ifdef ENABLE_NLS
# include <libintl.h>
# define _(s) gettext(s)
#else
# define _(s) s
#endif
/* Find current selected city for the clock applet with the specified id.
Returns NULL if not found. */
static char *
find_current_city(GConfClient *client, const char *id)
{
GError *error = NULL;
char *current_city = NULL;
char *cities_key = g_strdup_printf("/apps/panel/applets/%s"
"/prefs/cities", id);
GSList *cities = gconf_client_get_list(client,
cities_key,
GCONF_VALUE_STRING, &error);
if (error) {
fprintf(stderr, _("Error reading city list: `%s'.\n"),
cities_key);
g_free(cities_key);
return NULL;
}
g_free(cities_key);
for (GSList *city = cities; city != NULL;
city = g_slist_next(city)) {
char *city_spec = city->data;
char *c = strstr(city_spec, "current=\"true\"");
if (c) current_city = g_strdup(city_spec);
g_free(city->data);
}
g_slist_free(cities);
return current_city;
}
int
location_gnome_clock_init(location_gnome_clock_state_t *state)
{
g_type_init();
GError *error = NULL;
GConfClient *client = gconf_client_get_default();
/* Get a list of active applets in the panel. */
GSList *applets = gconf_client_get_list(client,
"/apps/panel/general/applet_id_list",
GCONF_VALUE_STRING, &error);
if (error) {
fputs(_("Cannot list GNOME panel applets.\n"), stderr);
g_object_unref(client);
g_slist_free(applets);
return -1;
}
/* Go through each applet and check if it is a clock applet.
When a clock applet is found, check whether there is a
city selected as the current city. */
char *current_city = NULL;
/* Keep track of the number of clock applets found to be able to give
better error output if something fails. */
int clock_applet_count = 0;
for (GSList *applet = applets; applet != NULL;
applet = g_slist_next(applet)) {
char *id = applet->data;
if (current_city == NULL) {
char *key = g_strdup_printf("/apps/panel/applets/%s"
"/bonobo_iid", id);
char *bonobo_iid = gconf_client_get_string(client, key,
&error);
if (!error && bonobo_iid != NULL &&
!strcmp(bonobo_iid, "OAFIID:GNOME_ClockApplet")) {
clock_applet_count += 1;
current_city = find_current_city(client, id);
}
g_free(bonobo_iid);
g_free(key);
}
g_free(id);
}
g_slist_free(applets);
g_object_unref(client);
/* Check whether an applet and a current city was found. */
if (clock_applet_count == 0) {
fputs(_("No clock applet was found.\n"), stderr);
return -1;
}
if (current_city == NULL) {
fputs(_("No city selected as current city.\n"), stderr);
return -1;
}
/* Find coords for selected city and parse as number. */
char *lat_str = strstr(current_city, "latitude=\"");
char *lon_str = strstr(current_city, "longitude=\"");
if (lat_str == NULL || lon_str == NULL) {
fputs(_("Location not specified for city.\n"), stderr);
g_free(current_city);
return -1;
}
g_free(current_city);
char *lat_num_str = lat_str + strlen("latitude=\"");
char *lon_num_str = lon_str + strlen("longitude=\"");
state->lat = g_ascii_strtod(lat_num_str, NULL);
state->lon = g_ascii_strtod(lon_num_str, NULL);
return 0;
}
int
location_gnome_clock_start(location_gnome_clock_state_t *state)
{
return 0;
}
void
location_gnome_clock_free(location_gnome_clock_state_t *state)
{
}
void
location_gnome_clock_print_help(FILE *f)
{
fputs(_("Use the location as set in the GNOME Clock applet.\n"), f);
fputs("\n", f);
}
int
location_gnome_clock_set_option(location_gnome_clock_state_t *state,
const char *key, const char *value)
{
return -1;
}
int
location_gnome_clock_get_location(location_gnome_clock_state_t *state,
float *lat, float *lon)
{
*lat = state->lat;
*lon = state->lon;
return 0;
}
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