root/trunk/libtinymail-maemo/tny-maemo-device.c

/* libtinymail-maemo - The Tiny Mail base library for maemo
 * Copyright (C) 2006-2007 Philip Van Hoof <pvanhoof@gnome.org>
 *
 * 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 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 self library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include <config.h>

#include <glib/gi18n-lib.h>

#include <tny-maemo-device.h>
#include <gdk/gdk.h>

static GObjectClass *parent_class = NULL;

#include "tny-maemo-device-priv.h"

static void tny_maemo_device_on_online (TnyDevice *self);
static void tny_maemo_device_on_offline (TnyDevice *self);
static gboolean tny_maemo_device_is_online (TnyDevice *self);


static gboolean
emit_status (TnyDevice *self)
{
        if (tny_maemo_device_is_online (self))
                tny_maemo_device_on_online (self);
        else
                tny_maemo_device_on_offline (self);

        return FALSE;
}

static void 
tny_maemo_device_reset (TnyDevice *self)
{
        TnyMaemoDevicePriv *priv = TNY_MAEMO_DEVICE_GET_PRIVATE (self);

        const gboolean status_before = tny_maemo_device_is_online (self);

        priv->fset = FALSE;
        priv->forced = FALSE;

        /* Signal if it changed: */
        if (status_before != tny_maemo_device_is_online (self))
                g_idle_add_full (G_PRIORITY_DEFAULT, 
                        (GSourceFunc) emit_status, 
                        g_object_ref (self), 
                        (GDestroyNotify) g_object_unref);
}

static void 
tny_maemo_device_force_online (TnyDevice *self)
{

        TnyMaemoDevicePriv *priv = TNY_MAEMO_DEVICE_GET_PRIVATE (self);

        const gboolean already_online = tny_maemo_device_is_online (self);

        priv->fset = TRUE;
        priv->forced = TRUE;

        /* Signal if it changed: */
        if (!already_online)
                g_idle_add_full (G_PRIORITY_DEFAULT, 
                        (GSourceFunc) emit_status, 
                        g_object_ref (self), 
                        (GDestroyNotify) g_object_unref);

        return;
}


static void
tny_maemo_device_force_offline (TnyDevice *self)
{
        TnyMaemoDevicePriv *priv = TNY_MAEMO_DEVICE_GET_PRIVATE (self);

        const gboolean already_offline = !tny_maemo_device_is_online (self);

        priv->fset = TRUE;
        priv->forced = FALSE;

        /* Signal if it changed: */
        if (!already_offline)
                g_idle_add_full (G_PRIORITY_DEFAULT, 
                        (GSourceFunc) emit_status, 
                        g_object_ref (self), 
                        (GDestroyNotify) g_object_unref);

        return;
}

static void
tny_maemo_device_on_online (TnyDevice *self)
{
        gdk_threads_enter ();
        g_signal_emit (self, tny_device_signals [TNY_DEVICE_CONNECTION_CHANGED], 0, TRUE);
        gdk_threads_leave ();

        return;
}

static void
tny_maemo_device_on_offline (TnyDevice *self)
{
        gdk_threads_enter ();
        g_signal_emit (self, tny_device_signals [TNY_DEVICE_CONNECTION_CHANGED], 0, FALSE);
        gdk_threads_leave ();

        return;
}

static gboolean
tny_maemo_device_is_online (TnyDevice *self)
{
        TnyMaemoDevicePriv *priv = TNY_MAEMO_DEVICE_GET_PRIVATE (self);
        gboolean retval = FALSE;

        if (priv->fset)
                retval = priv->forced;

        return retval;
}

static void
tny_maemo_device_instance_init (GTypeInstance *instance, gpointer g_class)
{
        TnyMaemoDevicePriv *priv = TNY_MAEMO_DEVICE_GET_PRIVATE (instance);

        priv->forced = FALSE;
        priv->fset = FALSE;
}


/**
 * tny_maemo_device_new:
 *
 * Return value: A new #TnyDevice implemented for MAEMO
 **/
TnyDevice*
tny_maemo_device_new (void)
{
        TnyMaemoDevice *self = g_object_new (TNY_TYPE_MAEMO_DEVICE, NULL);

        return TNY_DEVICE (self);
}


static void
tny_maemo_device_finalize (GObject *object)
{
        (*parent_class->finalize) (object);

        return;
}


static void
tny_device_init (gpointer g, gpointer iface_data)
{
        TnyDeviceIface *klass = (TnyDeviceIface *)g;

        klass->is_online= tny_maemo_device_is_online;
        klass->reset= tny_maemo_device_reset;
        klass->force_offline= tny_maemo_device_force_offline;
        klass->force_online= tny_maemo_device_force_online;

        return;
}



static void 
tny_maemo_device_class_init (TnyMaemoDeviceClass *class)
{
        GObjectClass *object_class;

        parent_class = g_type_class_peek_parent (class);
        object_class = (GObjectClass*) class;

        object_class->finalize = tny_maemo_device_finalize;

        g_type_class_add_private (object_class, sizeof (TnyMaemoDevicePriv));

        return;
}

static gpointer 
tny_maemo_device_register_type (gpointer notused)
{
        GType type = 0;

        static const GTypeInfo info = 
                {
                        sizeof (TnyMaemoDeviceClass),
                        NULL,   /* base_init */
                        NULL,   /* base_finalize */
                        (GClassInitFunc) tny_maemo_device_class_init,   /* class_init */
                        NULL,   /* class_finalize */
                        NULL,   /* class_data */
                        sizeof (TnyMaemoDevice),
                        0,      /* n_preallocs */
                        tny_maemo_device_instance_init    /* instance_init */
                };
        
        static const GInterfaceInfo tny_device_info = 
                {
                        (GInterfaceInitFunc) tny_device_init, /* interface_init */
                        NULL,         /* interface_finalize */
                        NULL          /* interface_data */
                };
        
        type = g_type_register_static (G_TYPE_OBJECT,
                                       "TnyMaemoDevice",
                                       &info, 0);
        
        g_type_add_interface_static (type, TNY_TYPE_DEVICE, 
                                     &tny_device_info);
        
        return GUINT_TO_POINTER (type);
}

GType 
tny_maemo_device_get_type (void)
{
        static GOnce once = G_ONCE_INIT;
        g_once (&once, tny_maemo_device_register_type, NULL);
        return GPOINTER_TO_UINT (once.retval);
}