Rename FileTimezone to TimedatedTimezone

1 files changed, 238 insertions, 0 deletions

diff --git a/src/timezone-timedated.cpp b/src/timezone-timedated.cpp
new file mode 100644
index 0000000..778697a
--- /dev/null
+++ b/src/timezone-timedated.cpp
@@ -0,0 +1,238 @@
+/*
+ * Copyright 2013 Canonical Ltd.
+ *
+ * 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/>.
+ *
+ * Authors:
+ *   Charles Kerr <charles.kerr@canonical.com>
+ */
+
+#include <datetime/timezone-timedated.h>
+
+#include <gio/gio.h>
+
+#include <cerrno>
+#include <cstdlib>
+
+namespace unity {
+namespace indicator {
+namespace datetime {
+
+/***
+****
+***/
+
+class TimedatedTimezone::Impl
+{
+public:
+
+    Impl(TimedatedTimezone& owner):
+        m_owner(owner),
+        m_loop(g_main_loop_new(nullptr, FALSE))
+    {
+        monitor_timezone_property();
+    }
+
+    ~Impl()
+    {
+        clear();
+    }
+
+private:
+
+    void clear()
+    {
+        if (m_bus_watch_id)
+        {
+            g_bus_unwatch_name (m_bus_watch_id);
+            m_bus_watch_id = 0;
+        }
+
+        if (m_properties_changed_id)
+        {
+            g_signal_handler_disconnect(m_proxy, m_properties_changed_id);
+            m_properties_changed_id = 0;
+        }
+
+        if (m_timeout_id)
+        {
+            g_source_remove(m_timeout_id);
+            m_timeout_id = 0;
+        }
+
+        g_clear_object(&m_proxy);
+        g_clear_pointer(&m_loop, g_main_loop_unref);
+    }
+
+    static void on_properties_changed(GDBusProxy *proxy G_GNUC_UNUSED,
+            GVariant *changed_properties /* a{sv} */,
+            GStrv invalidated_properties G_GNUC_UNUSED,
+            gpointer gself)
+    {
+        auto self = static_cast<Impl*>(gself);
+        char *tz;
+
+        if (g_variant_lookup(changed_properties, "Timezone", "s", &tz, NULL))
+        {
+            g_debug("on_properties_changed: got timezone '%s'", tz);
+            self->notify_timezone(tz);
+            g_free (tz);
+        }
+    }
+
+    static void on_proxy_ready(GObject *object G_GNUC_UNUSED,
+            GAsyncResult *res,
+            gpointer gself)
+    {
+        auto self = static_cast<Impl*>(gself);
+        GError *error = nullptr;
+        self->m_proxy = g_dbus_proxy_new_finish(res, &error);
+
+        if (error)
+        {
+            g_warning ("Couldn't create proxy to read timezone: %s", error->message);
+            goto out;
+        }
+
+        /* Read the property */
+        GVariant *prop;
+        prop = g_dbus_proxy_get_cached_property(self->m_proxy, "Timezone");
+
+        if (!prop || !g_variant_is_of_type(prop, G_VARIANT_TYPE_STRING))
+        {
+            g_warning("Couldn't read the Timezone property, defaulting to Etc/Utc");
+            self->notify_timezone("Etc/Utc");
+            goto out;
+        }
+
+        const gchar *tz;
+        tz = g_variant_get_string(prop, nullptr);
+
+        self->notify_timezone(tz);
+
+        self->m_properties_changed_id = g_signal_connect(self->m_proxy,
+                "g-properties-changed",
+                (GCallback) on_properties_changed,
+                gself);
+
+out:
+        g_clear_pointer(&error, g_error_free);
+        g_clear_pointer(&prop, g_variant_unref);
+        if (self->m_loop && g_main_loop_is_running(self->m_loop))
+            g_main_loop_quit(self->m_loop);
+
+        if (self->m_timeout_id)
+        {
+            g_source_remove(self->m_timeout_id);
+            self->m_timeout_id = 0;
+        }
+    }
+
+    static void on_name_appeared(GDBusConnection *connection,
+            const gchar *name,
+            const gchar *name_owner G_GNUC_UNUSED,
+            gpointer gself G_GNUC_UNUSED)
+    {
+        g_debug ("timedate1 appeared");
+        g_dbus_proxy_new(connection,
+                G_DBUS_PROXY_FLAGS_NONE,
+                NULL,
+                name,
+                "/org/freedesktop/timedate1",
+                "org.freedesktop.timedate1",
+                nullptr,
+                on_proxy_ready,
+                gself);
+    }
+
+    static gboolean quit_loop(gpointer gself)
+    {
+        auto self = static_cast<Impl*>(gself);
+
+        g_warning("Timed out when getting initial value of timezone, defaulting to UTC");
+        self->notify_timezone("Etc/Utc");
+
+        g_main_loop_quit(self->m_loop);
+
+        self->m_timeout_id = 0;
+
+        return G_SOURCE_REMOVE;
+    }
+
+    static void on_name_vanished(GDBusConnection *connection G_GNUC_UNUSED,
+            const gchar *name G_GNUC_UNUSED,
+            gpointer gself)
+    {
+        auto self = static_cast<Impl*>(gself);
+        g_debug ("timedate1 vanished");
+
+        g_signal_handler_disconnect(self->m_proxy,
+                self->m_properties_changed_id);
+        self->m_properties_changed_id = 0;
+        g_clear_object(&self->m_proxy);
+        g_clear_pointer(&self->m_proxy, g_main_loop_unref);
+    }
+
+    void monitor_timezone_property()
+    {
+        m_bus_watch_id = g_bus_watch_name (G_BUS_TYPE_SYSTEM,
+                "org.freedesktop.timedate1",
+                G_BUS_NAME_WATCHER_FLAGS_AUTO_START,
+                on_name_appeared,
+                on_name_vanished,
+                this,
+                nullptr);
+
+        /* Incase something breaks, we don't want to hang */
+        m_timeout_id = g_timeout_add(500, quit_loop, this);
+        g_main_loop_run(m_loop);
+    }
+
+    void notify_timezone(std::string new_timezone)
+    {
+        if (!new_timezone.empty())
+            m_owner.timezone.set(new_timezone);
+    }
+
+    /***
+    ****
+    ***/
+
+    TimedatedTimezone & m_owner;
+    unsigned long m_properties_changed_id = 0;
+    unsigned long m_bus_watch_id = 0;
+    unsigned long m_timeout_id = 0;
+    GDBusProxy *m_proxy = nullptr;
+    GMainLoop *m_loop = nullptr;
+};
+
+/***
+****
+***/
+
+TimedatedTimezone::TimedatedTimezone():
+    impl(new Impl{*this})
+{
+}
+
+TimedatedTimezone::~TimedatedTimezone()
+{
+}
+
+/***
+****
+***/
+
+} // namespace datetime
+} // namespace indicator
+} // namespace unity