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Diffstat (limited to 'src/clock-live.c')
| -rw-r--r-- | src/clock-live.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/src/clock-live.c b/src/clock-live.c new file mode 100644 index 0000000..4153747 --- /dev/null +++ b/src/clock-live.c @@ -0,0 +1,281 @@ +/* + * Copyright 2013 Canonical Ltd. + * + * Authors: + * Charles Kerr <charles.kerr@canonical.com> + * + * This program is free software: you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 3, 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 warranties of + * MERCHANTABILITY, SATISFACTORY QUALITY, 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 this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <glib.h> +#include <gio/gio.h> + +#include "config.h" + +#include "clock-live.h" +#include "settings-shared.h" +#include "timezone-file.h" +#include "timezone-geoclue.h" + +/*** +**** private struct +***/ + +struct _IndicatorDatetimeClockLivePriv +{ + GSettings * settings; + + GSList * timezones; /* IndicatorDatetimeTimezone */ + gchar ** timezones_strv; + GTimeZone * localtime_zone; +}; + +typedef IndicatorDatetimeClockLivePriv priv_t; + +/*** +**** GObject boilerplate +***/ + +static void indicator_datetime_clock_interface_init ( + IndicatorDatetimeClockInterface * iface); + +G_DEFINE_TYPE_WITH_CODE ( + IndicatorDatetimeClockLive, + indicator_datetime_clock_live, + G_TYPE_OBJECT, + G_IMPLEMENT_INTERFACE (INDICATOR_TYPE_DATETIME_CLOCK, + indicator_datetime_clock_interface_init)); + +/*** +**** Timezones +***/ + +static void +on_current_timezone_changed (IndicatorDatetimeClockLive * self) +{ + priv_t * p = self->priv; + + /* Invalidate the timezone information. + These fields will be lazily regenerated by rebuild_timezones() */ + g_clear_pointer (&p->timezones_strv, g_strfreev); + g_clear_pointer (&p->localtime_zone, g_time_zone_unref); + + indicator_datetime_clock_emit_changed (INDICATOR_DATETIME_CLOCK (self)); +} + +static void +set_detect_location_enabled (IndicatorDatetimeClockLive * self, gboolean enabled) +{ + GSList * l; + priv_t * p = self->priv; + gboolean changed = FALSE; + + /* clear out the old timezone objects */ + if (p->timezones != NULL) + { + for (l=p->timezones; l!=NULL; l=l->next) + { + g_signal_handlers_disconnect_by_func (l->data, on_current_timezone_changed, self); + g_object_unref (l->data); + } + + g_slist_free (p->timezones); + p->timezones = NULL; + changed = TRUE; + } + + /* maybe add new timezone objects */ + if (enabled) + { + p->timezones = g_slist_append (p->timezones, indicator_datetime_timezone_geoclue_new ()); + p->timezones = g_slist_append (p->timezones, indicator_datetime_timezone_file_new (TIMEZONE_FILE)); + + for (l=p->timezones; l!=NULL; l=l->next) + { + g_signal_connect_swapped (l->data, "notify::timezone", + G_CALLBACK(on_current_timezone_changed), self); + } + + changed = TRUE; + } + + if (changed) + on_current_timezone_changed (self); +} + +/* When the 'auto-detect timezone' boolean setting changes, + start or stop watching geoclue and /etc/timezone */ +static void +on_detect_location_changed (IndicatorDatetimeClockLive * self) +{ + const gboolean enabled = g_settings_get_boolean (self->priv->settings, SETTINGS_SHOW_DETECTED_S); + set_detect_location_enabled (self, enabled); +} + +/*** +**** IndicatorDatetimeClock virtual functions +***/ + +static void +rebuild_timezones (IndicatorDatetimeClockLive * self) +{ + priv_t * p; + GHashTable * hash; + GSList * l; + int i; + GHashTableIter iter; + gpointer key; + + p = self->priv; + + /* Build a hashtable of timezone strings. + This will weed out duplicates. */ + hash = g_hash_table_new (g_str_hash, g_str_equal); + for (l=p->timezones; l!=NULL; l=l->next) + { + const gchar * tz = indicator_datetime_timezone_get_timezone (l->data); + if (tz && *tz) + g_hash_table_add (hash, (gpointer) tz); + } + + /* rebuild p->timezone_strv */ + g_strfreev (p->timezones_strv); + p->timezones_strv = g_new0 (gchar*, g_hash_table_size(hash) + 1); + i = 0; + g_hash_table_iter_init (&iter, hash); + while (g_hash_table_iter_next (&iter, &key, NULL)) + p->timezones_strv[i++] = g_strdup (key); + + /* rebuild localtime_zone */ + g_clear_pointer (&p->localtime_zone, g_time_zone_unref); + p->localtime_zone = g_time_zone_new (p->timezones_strv ? p->timezones_strv[0] : NULL); + + /* cleanup */ + g_hash_table_unref (hash); +} + +static const gchar ** +my_get_timezones (IndicatorDatetimeClock * clock) +{ + IndicatorDatetimeClockLive * self = INDICATOR_DATETIME_CLOCK_LIVE (clock); + priv_t * p = self->priv; + + if (G_UNLIKELY (p->timezones_strv == NULL)) + rebuild_timezones (self); + + return (const gchar **) p->timezones_strv; +} + +static GDateTime * +my_get_localtime (IndicatorDatetimeClock * clock) +{ + IndicatorDatetimeClockLive * self = INDICATOR_DATETIME_CLOCK_LIVE (clock); + priv_t * p = self->priv; + + if (G_UNLIKELY (p->localtime_zone == NULL)) + rebuild_timezones (self); + + return g_date_time_new_now (p->localtime_zone); +} + +/*** +**** GObject virtual functions +***/ + +static void +my_dispose (GObject * o) +{ + IndicatorDatetimeClockLive * self; + priv_t * p; + + self = INDICATOR_DATETIME_CLOCK_LIVE(o); + p = self->priv; + + if (p->settings != NULL) + { + g_signal_handlers_disconnect_by_data (p->settings, self); + g_clear_object (&p->settings); + } + + set_detect_location_enabled (self, FALSE); + + G_OBJECT_CLASS (indicator_datetime_clock_live_parent_class)->dispose (o); +} + +static void +my_finalize (GObject * o) +{ + IndicatorDatetimeClockLive * self; + priv_t * p; + + self = INDICATOR_DATETIME_CLOCK_LIVE(o); + p = self->priv; + + g_clear_pointer (&p->localtime_zone, g_time_zone_unref); + g_strfreev (p->timezones_strv); + + G_OBJECT_CLASS (indicator_datetime_clock_live_parent_class)->dispose (o); +} + +/*** +**** Instantiation +***/ + +static void +indicator_datetime_clock_live_class_init (IndicatorDatetimeClockLiveClass * klass) +{ + GObjectClass * object_class = G_OBJECT_CLASS (klass); + + object_class->dispose = my_dispose; + object_class->finalize = my_finalize; + + g_type_class_add_private (klass, + sizeof (IndicatorDatetimeClockLivePriv)); +} + +static void +indicator_datetime_clock_interface_init (IndicatorDatetimeClockInterface * iface) +{ + iface->get_localtime = my_get_localtime; + iface->get_timezones = my_get_timezones; +} + +static void +indicator_datetime_clock_live_init (IndicatorDatetimeClockLive * self) +{ + IndicatorDatetimeClockLivePriv * p; + + p = G_TYPE_INSTANCE_GET_PRIVATE (self, + INDICATOR_TYPE_DATETIME_CLOCK_LIVE, + IndicatorDatetimeClockLivePriv); + self->priv = p; + + p->settings = g_settings_new (SETTINGS_INTERFACE); + g_signal_connect (p->settings, "changed::" SETTINGS_SHOW_DETECTED_S, + G_CALLBACK(on_detect_location_changed), self); + + + on_detect_location_changed (self); +} + +/*** +**** Public API +***/ + +IndicatorDatetimeClock * +indicator_datetime_clock_live_new (void) +{ + gpointer o = g_object_new (INDICATOR_TYPE_DATETIME_CLOCK_LIVE, NULL); + + return INDICATOR_DATETIME_CLOCK (o); +} |