project: Reorganize much

2019-05-04 19:48:40 -03:00
parent c3e1a377b7
commit a2609d6853
15 changed files with 16 additions and 43 deletions
@@ -0,0 +1,185 @@
+/* gcal-time-zone-monitor.c
+ *
+ * Copyright 2019 Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
+ *
+ * This program 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.
+ *
+ * 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 General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#define G_LOG_DOMAIN "GcalTimeZoneMonitor"
+
+#include "gcal-debug.h"
+#include "gcal-time-zone-monitor.h"
+
+#include <gio/gio.h>
+
+struct _GcalTimeZoneMonitor
+{
+  GObject             parent;
+
+  GTimeZone          *timezone;
+
+  GDBusProxy         *timedate1_proxy;
+};
+
+G_DEFINE_TYPE (GcalTimeZoneMonitor, gcal_time_zone_monitor, G_TYPE_OBJECT)
+
+enum
+{
+  PROP_0,
+  PROP_TIMEZONE,
+  N_PROPS
+};
+
+static GParamSpec *properties [N_PROPS];
+
+
+/*
+ * Callbacks
+ */
+
+static void
+on_timedate1_proxy_properties_changed_cb (GcalTimeZoneMonitor *self,
+                                          GVariant            *props,
+                                          const gchar * const *invalidated,
+                                          GDBusProxy          *proxy)
+{
+  g_autoptr (GVariant) timezone_variant = NULL;
+  const gchar *timezone_identifier = NULL;
+
+  g_assert (GCAL_IS_TIME_ZONE_MONITOR (self));
+  g_assert (G_IS_DBUS_PROXY (proxy));
+
+  timezone_variant = g_dbus_proxy_get_cached_property (proxy, "Timezone");
+
+  /*
+   * NULL timezone_variant means NULL timezone_identifier, which falls back
+   * to regularly checking /etc/localtime
+   */
+  if (timezone_variant)
+    timezone_identifier = g_variant_get_string (timezone_variant, NULL);
+
+  self->timezone = g_time_zone_new (timezone_identifier);
+
+  g_debug ("System timezone is %s", g_time_zone_get_identifier (self->timezone));
+
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_TIMEZONE]);
+}
+
+
+/*
+ * GObject overrides
+ */
+
+static void
+gcal_time_zone_monitor_finalize (GObject *object)
+{
+  GcalTimeZoneMonitor *self = (GcalTimeZoneMonitor *)object;
+
+  g_clear_object (&self->timedate1_proxy);
+  g_clear_object (&self->timezone);
+
+  G_OBJECT_CLASS (gcal_time_zone_monitor_parent_class)->finalize (object);
+}
+
+static void
+gcal_time_zone_monitor_get_property (GObject    *object,
+                                     guint       prop_id,
+                                     GValue     *value,
+                                     GParamSpec *pspec)
+{
+  GcalTimeZoneMonitor *self = GCAL_TIME_ZONE_MONITOR (object);
+
+  switch (prop_id)
+    {
+    case PROP_TIMEZONE:
+      g_value_set_boxed (value, self->timezone);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+gcal_time_zone_monitor_class_init (GcalTimeZoneMonitorClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = gcal_time_zone_monitor_finalize;
+  object_class->get_property = gcal_time_zone_monitor_get_property;
+
+  properties[PROP_TIMEZONE] = g_param_spec_boxed ("timezone",
+                                                  "Timezone",
+                                                  "System timezone",
+                                                  G_TYPE_TIME_ZONE,
+                                                  G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (object_class, N_PROPS, properties);
+}
+
+static void
+gcal_time_zone_monitor_init (GcalTimeZoneMonitor *self)
+{
+  g_autoptr (GDBusConnection) connection = NULL;
+  g_autoptr (GDBusProxy) proxy = NULL;
+
+  GCAL_ENTRY;
+
+  connection = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, NULL);
+
+  if (!connection)
+    GCAL_RETURN ();
+
+  proxy = g_dbus_proxy_new_sync (connection,
+                                 G_DBUS_PROXY_FLAGS_GET_INVALIDATED_PROPERTIES,
+                                 NULL,
+                                 "org.freedesktop.timedate1",
+                                 "/org/freedesktop/timedate1",
+                                 "org.freedesktop.timedate1",
+                                 NULL,
+                                 NULL);
+
+  if (!proxy)
+    GCAL_RETURN ();
+
+  g_debug ("Created Time Zone monitor");
+
+  g_signal_connect_object (proxy,
+                           "g-properties-changed",
+                           G_CALLBACK (on_timedate1_proxy_properties_changed_cb),
+                           self,
+                           G_CONNECT_SWAPPED);
+
+  self->timedate1_proxy = g_steal_pointer (&proxy);
+
+  on_timedate1_proxy_properties_changed_cb (self, NULL, NULL, self->timedate1_proxy);
+
+  GCAL_EXIT;
+}
+
+GcalTimeZoneMonitor*
+gcal_time_zone_monitor_new (void)
+{
+  return g_object_new (GCAL_TYPE_TIME_ZONE_MONITOR, NULL);
+}
+
+GTimeZone*
+gcal_time_zone_monitor_get_timezone (GcalTimeZoneMonitor *self)
+{
+  g_return_val_if_fail (GCAL_IS_TIME_ZONE_MONITOR (self), NULL);
+
+  return self->timezone;
+}