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/*
 * 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/dbus-shared.h>
#include <datetime/exporter.h>

#include <glib/gi18n.h>
#include <gio/gio.h>

namespace unity {
namespace indicator {
namespace datetime {

/***
****
***/

Exporter::~Exporter()
{
    if (m_dbus_connection != nullptr)
    {
        for(auto& id : m_exported_menu_ids)
            g_dbus_connection_unexport_menu_model(m_dbus_connection, id);

        if (m_exported_actions_id)
            g_dbus_connection_unexport_action_group(m_dbus_connection, m_exported_actions_id);
    }

    if (m_own_id)
        g_bus_unown_name(m_own_id);

    g_clear_object(&m_dbus_connection);
}

/***
****
***/

void
Exporter::on_bus_acquired(GDBusConnection* connection, const gchar* name, gpointer gthis)
{
    g_debug("bus acquired: %s", name);
    static_cast<Exporter*>(gthis)->on_bus_acquired(connection, name);
}

void
Exporter::on_bus_acquired(GDBusConnection* connection, const gchar* /*name*/)
{
    m_dbus_connection = static_cast<GDBusConnection*>(g_object_ref(G_OBJECT(connection)));

    // export the actions
    GError * error = nullptr;
    const auto id = g_dbus_connection_export_action_group(m_dbus_connection,
                                                          BUS_PATH,
                                                          m_actions->action_group(),
                                                          &error);
    if (id)
    {
        m_exported_actions_id = id;
    }
    else
    {
        g_warning("cannot export action group: %s", error->message);
        g_clear_error(&error);
    }

    // export the menus
    for(auto& menu : m_menus)
    {
        const auto path = std::string(BUS_PATH) + "/" + menu->name();
        const auto id = g_dbus_connection_export_menu_model(m_dbus_connection, path.c_str(), menu->menu_model(), &error);
        if (id)
        {
            m_exported_menu_ids.insert(id);
        }
        else
        {
            if (error != nullptr)
                g_warning("cannot export %s menu: %s", menu->name().c_str(), error->message);
            g_clear_error(&error);
        }
    }
}

/***
****
***/

void
Exporter::on_name_lost(GDBusConnection* connection, const gchar* name, gpointer gthis)
{
    g_debug("name lost: %s", name);
    static_cast<Exporter*>(gthis)->on_name_lost(connection, name);
}

void
Exporter::on_name_lost(GDBusConnection* /*connection*/, const gchar* /*name*/)
{
    name_lost();
}

/***
****
***/

void
Exporter::publish(std::shared_ptr<Actions>& actions,
                  std::vector<std::shared_ptr<Menu>>& menus)
{
    m_actions = actions;
    m_menus = menus;
    m_own_id = g_bus_own_name(G_BUS_TYPE_SESSION,
                              BUS_NAME,
                              G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT,
                              on_bus_acquired,
                              nullptr,
                              on_name_lost,
                              this,
                              nullptr);
}

/***
****
***/

} // namespace datetime
} // namespace indicator
} // namespace unity