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/* Evolution calendar - weather backend source class
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
* This library 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 library 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 this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: David Trowbridge <trowbrds@cs.colorado.edu>
*/
#include "evolution-data-server-config.h"
#include <string.h>
#include "e-weather-source.h"
struct _EWeatherSourcePrivate {
GWeatherLocation *location;
GWeatherInfo *info;
EWeatherSourceFinished done;
gpointer finished_data;
};
G_DEFINE_TYPE_WITH_PRIVATE (EWeatherSource, e_weather_source, G_TYPE_OBJECT)
static void
weather_source_dispose (GObject *object)
{
EWeatherSourcePrivate *priv;
priv = E_WEATHER_SOURCE (object)->priv;
g_clear_pointer (&priv->location, gweather_location_unref);
g_clear_object (&priv->info);
/* Chain up to parent's dispose() method. */
G_OBJECT_CLASS (e_weather_source_parent_class)->dispose (object);
}
static void
e_weather_source_class_init (EWeatherSourceClass *class)
{
GObjectClass *object_class;
object_class = G_OBJECT_CLASS (class);
object_class->dispose = weather_source_dispose;
}
static void
e_weather_source_init (EWeatherSource *source)
{
source->priv = e_weather_source_get_instance_private (source);
}
static GWeatherLocation *
weather_source_find_location_by_coords (GWeatherLocation *start,
gdouble latitude,
gdouble longitude)
{
GWeatherLocation *location;
#if GWEATHER_CHECK_VERSION(3, 39, 0)
GWeatherLocation *child = NULL;
#else
GWeatherLocation **children;
gint ii;
#endif
if (!start)
return NULL;
location = start;
if (gweather_location_has_coords (location)) {
gdouble lat, lon;
gweather_location_get_coords (location, &lat, &lon);
if (lat == latitude && lon == longitude) {
gweather_location_ref (location);
return location;
}
}
#if GWEATHER_CHECK_VERSION(3, 39, 0)
while (child = gweather_location_next_child (location, child), child) {
GWeatherLocation *result;
result = weather_source_find_location_by_coords (child, latitude, longitude);
if (result) {
gweather_location_unref (child);
return result;
}
}
#else
children = gweather_location_get_children (location);
for (ii = 0; children[ii]; ii++) {
location = weather_source_find_location_by_coords (children[ii], latitude, longitude);
if (location) {
gweather_location_ref (location);
return location;
}
}
#endif
return NULL;
}
EWeatherSource *
e_weather_source_new (const gchar *location)
{
GWeatherLocation *world, *glocation;
EWeatherSource *source;
gchar **tokens;
/* Old location is formatted as ccf/AAA[/BBB] - AAA is the 3-letter
* station code for identifying the providing station (subdirectory
* within the crh data repository). BBB is an optional additional
* station ID for the station within the CCF file. If not present,
* BBB is assumed to be the same station as AAA.
*
* But the new location is code/name, where code is 4-letter code.
* So if we got the old format, then migrate to the new one if
* possible. */
if (location == NULL)
return NULL;
world = gweather_location_get_world ();
if (strncmp (location, "ccf/", 4) == 0)
location += 4;
tokens = g_strsplit (location, "/", 2);
glocation = gweather_location_find_by_station_code (world, tokens[0]);
#if !GWEATHER_CHECK_VERSION(3, 39, 0)
if (glocation)
gweather_location_ref (glocation);
#endif
if (!glocation) {
gdouble latitude, longitude;
gchar *endptr = NULL;
latitude = g_ascii_strtod (location, &endptr);
if (endptr && *endptr == '/') {
longitude = g_ascii_strtod (endptr + 1, NULL);
glocation = weather_source_find_location_by_coords (world, latitude, longitude);
}
}
#if GWEATHER_CHECK_VERSION(3, 39, 0)
gweather_location_unref (world);
#endif
g_strfreev (tokens);
if (glocation == NULL)
return NULL;
source = g_object_new (E_TYPE_WEATHER_SOURCE, NULL);
source->priv->location = glocation;
return source;
}
static void
weather_source_updated_cb (GWeatherInfo *info,
EWeatherSource *source)
{
g_return_if_fail (E_IS_WEATHER_SOURCE (source));
g_return_if_fail (source->priv->done != NULL);
/* An invalid GWeatherInfo is as good as NULL. */
if (info != NULL && !gweather_info_is_valid (info))
info = NULL;
source->priv->done (info, source->priv->finished_data);
}
void
e_weather_source_parse (EWeatherSource *source,
EWeatherSourceFinished done,
gpointer data)
{
g_return_if_fail (E_IS_WEATHER_SOURCE (source));
g_return_if_fail (done != NULL);
/* FIXME Take a GAsyncReadyCallback instead of a custom callback,
* and write an e_weather_source_parse_finish() function. */
source->priv->finished_data = data;
source->priv->done = done;
if (source->priv->info == NULL) {
source->priv->info = gweather_info_new (
source->priv->location
#ifndef HAVE_ONE_ARG_GWEATHER_INFO_NEW
, GWEATHER_FORECAST_LIST
#endif
);
#if GWEATHER_CHECK_VERSION(3, 39, 0)
gweather_info_set_application_id (source->priv->info, "org.gnome.Evolution-data-server");
gweather_info_set_contact_info (source->priv->info, "evolution-hackers@gnome.org");
#endif
gweather_info_set_enabled_providers (source->priv->info, GWEATHER_PROVIDER_METAR | GWEATHER_PROVIDER_IWIN);
g_signal_connect_object (
source->priv->info, "updated",
G_CALLBACK (weather_source_updated_cb), source, 0);
}
gweather_info_update (source->priv->info);
}
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