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/* vi: set et sw=4 ts=4 cino=t0,(0: */
/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of libsignon-glib
*
* Copyright (C) 2009-2010 Nokia Corporation.
*
* Contact: Alberto Mardegan <alberto.mardegan@nokia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "signon-dbus-queue.h"
typedef struct {
SignonReadyCb callback;
gpointer user_data;
} SignonReadyCbData;
typedef struct {
gpointer self;
GSList *callbacks;
} SignonReadyData;
static GQuark
_signon_object_ready_quark()
{
static GQuark quark = 0;
if (!quark)
quark = g_quark_from_static_string ("signon_object_ready_quark");
return quark;
}
static GQuark
_signon_object_error_quark()
{
static GQuark quark = 0;
if (!quark)
quark = g_quark_from_static_string ("signon_object_error_quark");
return quark;
}
static void
signon_object_invoke_ready_callbacks (SignonReadyData *rd, const GError *error)
{
GSList *list;
for (list = rd->callbacks; list != NULL; list = list->next)
{
SignonReadyCbData *cb = list->data;
cb->callback (rd->self, error, cb->user_data);
g_slice_free (SignonReadyCbData, cb);
}
g_slist_free (rd->callbacks);
}
static void
signon_ready_data_free (SignonReadyData *rd)
{
if (rd->self)
{
//TODO: Signon error codes need be presented instead of 555 and 666
GError error = { 555, 666, "Object disposed" };
signon_object_invoke_ready_callbacks (rd, &error);
}
g_slice_free (SignonReadyData, rd);
}
void
_signon_object_call_when_ready (gpointer object, GQuark quark, SignonReadyCb callback,
gpointer user_data)
{
SignonReadyData *rd;
SignonReadyCbData *cb;
g_return_if_fail (G_IS_OBJECT (object));
g_return_if_fail (quark != 0);
g_return_if_fail (callback != NULL);
if (GPOINTER_TO_INT (g_object_get_qdata((GObject *)object,
_signon_object_ready_quark())) == TRUE)
{
//TODO: specify the last error in object initialization
GError * err = g_object_get_qdata((GObject *)object,
_signon_object_error_quark());
return (*callback)(object, err, user_data);
}
cb = g_slice_new (SignonReadyCbData);
cb->callback = callback;
cb->user_data = user_data;
rd = g_object_get_qdata ((GObject *)object, quark);
if (!rd)
{
rd = g_slice_new (SignonReadyData);
rd->self = object;
rd->callbacks = NULL;
g_object_set_qdata_full ((GObject *)object, quark, rd,
(GDestroyNotify)signon_ready_data_free);
}
rd->callbacks = g_slist_append (rd->callbacks, cb);
}
void
_signon_object_ready (gpointer object, GQuark quark, GError *error)
{
SignonReadyData *rd;
g_object_set_qdata((GObject *)object, _signon_object_ready_quark(), GINT_TO_POINTER(TRUE));
if(error)
g_object_set_qdata_full ((GObject *)object, _signon_object_error_quark(),
error,
(GDestroyNotify)g_error_free);
/* steal the qdata so the callbacks won't be invoked again, even if the
* object becomes ready or is finalized while still invoking them */
rd = g_object_steal_qdata ((GObject *)object, quark);
if (!rd) return;
g_object_ref (object);
signon_object_invoke_ready_callbacks (rd, error);
rd->self = NULL; /* so the callbacks won't be invoked again */
signon_ready_data_free (rd);
g_object_unref (object);
//TODO: set some sort of ready information
}
void
_signon_object_not_ready (gpointer object)
{
g_object_set_qdata ((GObject *)object,
_signon_object_ready_quark(),
GINT_TO_POINTER(FALSE));
g_object_set_qdata ((GObject *)object,
_signon_object_error_quark(),
NULL);
}
const GError *
_signon_object_last_error (gpointer object)
{
return g_object_get_qdata((GObject *)object,
_signon_object_error_quark());
}
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