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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright 2019 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gmemorymonitor.h"
#include "gmemorymonitorportal.h"
#include "ginitable.h"
#include "giomodule-priv.h"
#include "xdp-dbus.h"
#include "gportalsupport.h"
#define G_MEMORY_MONITOR_PORTAL_GET_INITABLE_IFACE(o) (G_TYPE_INSTANCE_GET_INTERFACE ((o), G_TYPE_INITABLE, GInitable))
static void g_memory_monitor_portal_iface_init (GMemoryMonitorInterface *iface);
static void g_memory_monitor_portal_initable_iface_init (GInitableIface *iface);
struct _GMemoryMonitorPortal
{
GObject parent_instance;
GDBusProxy *proxy;
gulong signal_id;
};
G_DEFINE_TYPE_WITH_CODE (GMemoryMonitorPortal, g_memory_monitor_portal, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
g_memory_monitor_portal_initable_iface_init)
G_IMPLEMENT_INTERFACE (G_TYPE_MEMORY_MONITOR,
g_memory_monitor_portal_iface_init)
_g_io_modules_ensure_extension_points_registered ();
g_io_extension_point_implement (G_MEMORY_MONITOR_EXTENSION_POINT_NAME,
g_define_type_id,
"portal",
40))
static void
g_memory_monitor_portal_init (GMemoryMonitorPortal *portal)
{
}
static void
proxy_signal (GDBusProxy *proxy,
const char *sender,
const char *signal,
GVariant *parameters,
GMemoryMonitorPortal *portal)
{
guint8 level;
if (strcmp (signal, "LowMemoryWarning") != 0)
return;
if (!parameters)
return;
g_variant_get (parameters, "(y)", &level);
g_signal_emit_by_name (portal, "low-memory-warning", level);
}
static gboolean
g_memory_monitor_portal_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
GMemoryMonitorPortal *portal = G_MEMORY_MONITOR_PORTAL (initable);
GDBusProxy *proxy;
gchar *name_owner = NULL;
if (!glib_should_use_portal ())
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Not using portals");
return FALSE;
}
proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES,
NULL,
"org.freedesktop.portal.Desktop",
"/org/freedesktop/portal/desktop",
"org.freedesktop.portal.MemoryMonitor",
cancellable,
error);
if (!proxy)
return FALSE;
name_owner = g_dbus_proxy_get_name_owner (proxy);
if (name_owner == NULL)
{
g_object_unref (proxy);
g_set_error (error,
G_DBUS_ERROR,
G_DBUS_ERROR_NAME_HAS_NO_OWNER,
"Desktop portal not found");
return FALSE;
}
g_free (name_owner);
portal->signal_id = g_signal_connect (proxy, "g-signal",
G_CALLBACK (proxy_signal), portal);
portal->proxy = proxy;
return TRUE;
}
static void
g_memory_monitor_portal_finalize (GObject *object)
{
GMemoryMonitorPortal *portal = G_MEMORY_MONITOR_PORTAL (object);
if (portal->proxy != NULL)
g_clear_signal_handler (&portal->signal_id, portal->proxy);
g_clear_object (&portal->proxy);
G_OBJECT_CLASS (g_memory_monitor_portal_parent_class)->finalize (object);
}
static void
g_memory_monitor_portal_class_init (GMemoryMonitorPortalClass *nl_class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (nl_class);
gobject_class->finalize = g_memory_monitor_portal_finalize;
}
static void
g_memory_monitor_portal_iface_init (GMemoryMonitorInterface *monitor_iface)
{
}
static void
g_memory_monitor_portal_initable_iface_init (GInitableIface *iface)
{
iface->init = g_memory_monitor_portal_initable_init;
}
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