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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/*
* Copyright (C) 2009 Alexander Sack <asac@jwsdot.com>
*
* This file is part of:
* ntrack - Network Status Tracking for Desktop Applications
* http://launchpad.net/ntrack
*
* ntrack 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 3 of
* the License, or (at your option) any later version.
*
* ntrack 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 ntrack. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ntrackbase.h"
#include "ntrack-gsource.h"
#include "ntrack-gmonitor.h"
#include "ntrack-gmarshal.h"
#include "ntrack-enumtypes.h"
enum {
_EVENT = 0,
_STATE_CHANGED,
_LAST
};
typedef struct _NTrackGMonitorPrivate
{
ntrack_state_t state;
guint gsource_id;
} NTrackGMonitorPrivate;
#define N_TRACK_GMONITOR_PRIVATE(s) G_TYPE_INSTANCE_GET_PRIVATE(s,N_TYPE_TRACK_GMONITOR,NTrackGMonitorPrivate)
static int signals [_LAST];
G_DEFINE_TYPE (NTrackGMonitor, ntrack_g_monitor, G_TYPE_OBJECT)
static NTrackGMonitor *_singleton = NULL;
static GObject *
ntrack_g_monitor_constructor (GType gtype,
guint n_properties,
GObjectConstructParam *properties)
{
if (!_singleton) {
GObjectClass *parent_class;
parent_class = G_OBJECT_CLASS (ntrack_g_monitor_parent_class);
_singleton = N_TRACK_GMONITOR (parent_class->constructor (gtype, n_properties, properties));
g_object_add_weak_pointer (G_OBJECT (_singleton), (gpointer*)&_singleton);
} else {
g_object_ref (_singleton);
}
return G_OBJECT (_singleton);
}
static void
ntrack_g_monitor_finalize (GObject *self)
{
NTrackGMonitor *monitor = N_TRACK_GMONITOR (self);
NTrackGMonitorPrivate *priv = N_TRACK_GMONITOR_PRIVATE (self);
g_assert (monitor);
if (priv->gsource_id)
g_source_remove (priv->gsource_id);
}
static gboolean
_event_callback (NTrackGlibEvent event, gpointer user_data)
{
NTrackGlibState oldstate;
NTrackGMonitor *self = N_TRACK_GMONITOR (user_data);
NTrackGMonitorPrivate *priv = N_TRACK_GMONITOR_PRIVATE (self);
g_assert (self);
/* update state; keep oldstate to condition state signal emit */
oldstate = priv->state;
priv->state = ntrack_glib_get_state ();
/* dispatch all events */
g_signal_emit (self, signals[_EVENT], 0, event, NULL);
/* emit state changes only */
if (oldstate != priv->state)
g_signal_emit (self, signals[_STATE_CHANGED], 0, oldstate, priv->state, NULL);
return TRUE;
}
static void
ntrack_g_monitor_init (NTrackGMonitor *self)
{
NTrackGMonitorPrivate *priv = N_TRACK_GMONITOR_PRIVATE (self);
g_assert (self);
priv->gsource_id = ntrack_g_source_add (_event_callback, self);
g_assert (priv->gsource_id);
priv->state = ntrack_glib_get_state ();
}
static void
ntrack_g_monitor_class_init (NTrackGMonitorClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->constructor = ntrack_g_monitor_constructor;
gobject_class->finalize = ntrack_g_monitor_finalize;
g_type_class_add_private (klass, sizeof (NTrackGMonitorPrivate));
signals [_EVENT] =
g_signal_new ("ntrack-event",
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (NTrackGMonitorClass, event),
NULL, NULL,
_ntrack_cclosure_marshal_VOID__ENUM,
G_TYPE_NONE, 1, n_track_glib_event_get_type());
signals [_STATE_CHANGED] =
g_signal_new ("ntrack-state-changed",
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (NTrackGMonitorClass, state_changed),
NULL, NULL,
_ntrack_cclosure_marshal_VOID__ENUM_ENUM,
G_TYPE_NONE, 2, n_track_glib_state_get_type(), n_track_glib_event_get_type());
}
NTrackGMonitor* ntrack_g_monitor_get ()
{
_singleton = g_object_new (N_TYPE_TRACK_GMONITOR, NULL);
return _singleton;
}
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