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/*
* Copyright 2016 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 <src/dbus-names.h>
#include <src/greeter.h>
#include <gio/gio.h>
class UnityGreeter::Impl
{
public:
explicit Impl(GDBusConnection* connection):
m_bus(G_DBUS_CONNECTION(g_object_ref(connection))),
m_cancellable{g_cancellable_new()}
{
m_watcher_id = g_bus_watch_name_on_connection(
m_bus,
DBusNames::UnityGreeter::NAME,
G_BUS_NAME_WATCHER_FLAGS_AUTO_START,
on_greeter_appeared,
on_greeter_vanished,
this,
nullptr);
m_subscription_id = g_dbus_connection_signal_subscribe(
m_bus,
DBusNames::UnityGreeter::NAME,
DBusNames::Properties::INTERFACE,
DBusNames::Properties::PropertiesChanged::NAME,
DBusNames::UnityGreeter::PATH,
DBusNames::UnityGreeter::INTERFACE,
G_DBUS_SIGNAL_FLAGS_NONE,
on_properties_changed_signal,
this,
nullptr);
}
~Impl()
{
g_cancellable_cancel(m_cancellable);
g_clear_object(&m_cancellable);
g_bus_unwatch_name(m_watcher_id);
g_dbus_connection_signal_unsubscribe(m_bus, m_subscription_id);
g_clear_object(&m_bus);
}
core::Property<bool>& is_active()
{
return m_is_active;
}
private:
static void on_greeter_appeared(
GDBusConnection* /*session_bus*/,
const char* /*name*/,
const char* name_owner,
gpointer gself)
{
auto self = static_cast<Impl*>(gself);
self->m_owner = name_owner;
g_dbus_connection_call(
self->m_bus,
DBusNames::UnityGreeter::NAME,
DBusNames::UnityGreeter::PATH,
DBusNames::Properties::INTERFACE,
"Get",
g_variant_new("(ss)", DBusNames::UnityGreeter::INTERFACE, "IsActive"),
G_VARIANT_TYPE("(v)"),
G_DBUS_CALL_FLAGS_NONE,
-1,
self->m_cancellable,
on_get_is_active_ready,
gself);
}
static void on_greeter_vanished(
GDBusConnection* /*session_bus*/,
const char* /*name*/,
gpointer gself)
{
auto self = static_cast<Impl*>(gself);
self->m_owner.clear();
self->m_is_active.set(false);
}
static void on_get_is_active_ready(
GObject* source,
GAsyncResult* res,
gpointer gself)
{
GError* error {};
auto v = g_dbus_connection_call_finish(G_DBUS_CONNECTION(source), res, &error);
if (error != nullptr) {
if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_warning("Greeter: Error getting IsActive property: %s", error->message);
g_clear_error(&error);
} else {
GVariant* is_active {};
g_variant_get_child(v, 0, "v", &is_active);
static_cast<Impl*>(gself)->m_is_active.set(g_variant_get_boolean(is_active));
g_clear_pointer(&is_active, g_variant_unref);
}
g_clear_pointer(&v, g_variant_unref);
}
static void on_properties_changed_signal(
GDBusConnection* /*connection*/,
const gchar* sender_name,
const gchar* object_path,
const gchar* interface_name,
const gchar* signal_name,
GVariant* parameters,
gpointer gself)
{
auto self = static_cast<Impl*>(gself);
g_return_if_fail(!g_strcmp0(sender_name, self->m_owner.c_str()));
g_return_if_fail(!g_strcmp0(object_path, DBusNames::UnityGreeter::PATH));
g_return_if_fail(!g_strcmp0(interface_name, DBusNames::Properties::INTERFACE));
g_return_if_fail(!g_strcmp0(signal_name, DBusNames::Properties::PropertiesChanged::NAME));
g_return_if_fail(g_variant_is_of_type(parameters, G_VARIANT_TYPE(DBusNames::Properties::PropertiesChanged::ARGS_VARIANT_TYPE)));
auto v = g_variant_get_child_value(parameters, 1);
gboolean is_active {};
if (g_variant_lookup(v, "IsActive", "b", &is_active))
{
g_debug("%s is_active changed to %d", G_STRLOC, int(is_active));
self->m_is_active.set(is_active);
}
g_clear_pointer(&v, g_variant_unref);
}
core::Property<bool> m_is_active {false};
GDBusConnection* m_bus {};
GCancellable* m_cancellable {};
guint m_watcher_id {};
unsigned int m_subscription_id {};
std::string m_owner;
};
/***
****
***/
Greeter::Greeter() =default;
Greeter::~Greeter() =default;
UnityGreeter::UnityGreeter(GDBusConnection* connection):
impl{new Impl{connection}}
{
}
UnityGreeter::~UnityGreeter() =default;
core::Property<bool>&
UnityGreeter::is_active()
{
return impl->is_active();
}
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