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add connection singleton

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This commit is contained in:
Richard Hughes 2007-08-20 23:41:50 +01:00
parent 7d373b8838
commit a9e4a21557
2 changed files with 207 additions and 0 deletions
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149
client/pk-connection.c Normal file
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2007 Richard Hughes <richard@hughsie.com>
*
* Licensed under the GNU General Public License Version 2
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include <glib/gi18n.h>
#include <libgbus.h>
#include "pk-debug.h"
#include "pk-task-common.h"
#include "pk-connection.h"
#define PK_CONNECTION_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), PK_TYPE_CONNECTION, PkConnectionPrivate))
struct PkConnectionPrivate
{
LibGBus *libgbus;
};
enum {
CONNECTION_CHANGED,
LAST_SIGNAL
};
static guint signals [LAST_SIGNAL] = { 0, };
static gpointer pk_connection_object = NULL;
G_DEFINE_TYPE (PkConnection, pk_connection, G_TYPE_OBJECT)
/**
* pk_connection_valid:
**/
gboolean
pk_connection_valid (PkConnection *connection)
{
return libgbus_is_connected (connection->priv->libgbus);
}
/**
* pk_connection_finalize:
**/
static void
pk_connection_finalize (GObject *object)
{
PkConnection *connection;
g_return_if_fail (object != NULL);
g_return_if_fail (PK_IS_CONNECTION (object));
connection = PK_CONNECTION (object);
g_return_if_fail (connection->priv != NULL);
g_object_unref (connection->priv->libgbus);
G_OBJECT_CLASS (pk_connection_parent_class)->finalize (object);
}
/**
* pk_connection_class_init:
**/
static void
pk_connection_class_init (PkConnectionClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = pk_connection_finalize;
signals [CONNECTION_CHANGED] =
g_signal_new ("connection-changed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (PkConnectionClass, connection_changed),
NULL,
NULL,
g_cclosure_marshal_VOID__BOOLEAN,
G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
g_type_class_add_private (klass, sizeof (PkConnectionPrivate));
}
/**
* pk_connection_connection_changed_cb:
**/
static void
pk_connection_connection_changed_cb (LibGBus *libgbus, gboolean connected, PkConnection *connection)
{
pk_debug ("emit connection-changed: %i", connected);
g_signal_emit (connection , signals [CONNECTION_CHANGED], 0, connected);
}
/**
* pk_connection_init:
**/
static void
pk_connection_init (PkConnection *connection)
{
connection->priv = PK_CONNECTION_GET_PRIVATE (connection);
connection->priv->libgbus = libgbus_new ();
/* hardcode to PK */
libgbus_assign (connection->priv->libgbus, LIBGBUS_SYSTEM, PK_DBUS_SERVICE);
/* watch for future changes */
g_signal_connect (connection->priv->libgbus, "connection-changed",
G_CALLBACK (pk_connection_connection_changed_cb), connection);
}
/**
* pk_connection_new:
* Return value: A new connection class instance.
**/
PkConnection *
pk_connection_new (void)
{
if (pk_connection_object != NULL) {
g_object_ref (pk_connection_object);
} else {
pk_connection_object = g_object_new (PK_TYPE_CONNECTION, NULL);
g_object_add_weak_pointer (pk_connection_object, &pk_connection_object);
}
return PK_CONNECTION (pk_connection_object);
}

58
client/pk-connection.h Normal file
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2007 Richard Hughes <richard@hughsie.com>
*
* Licensed under the GNU General Public License Version 2
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __PK_CONNECTION_H
#define __PK_CONNECTION_H
#include <glib-object.h>
G_BEGIN_DECLS
#define PK_TYPE_CONNECTION (pk_connection_get_type ())
#define PK_CONNECTION(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), PK_TYPE_CONNECTION, PkConnection))
#define PK_CONNECTION_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), PK_TYPE_CONNECTION, PkConnectionClass))
#define PK_IS_CONNECTION(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), PK_TYPE_CONNECTION))
#define PK_IS_CONNECTION_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), PK_TYPE_CONNECTION))
#define PK_CONNECTION_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), PK_TYPE_CONNECTION, PkConnectionClass))
typedef struct PkConnectionPrivate PkConnectionPrivate;
typedef struct
{
GObject parent;
PkConnectionPrivate *priv;
} PkConnection;
typedef struct
{
GObjectClass parent_class;
void (* connection_changed) (PkConnection *connection,
gboolean connected);
} PkConnectionClass;
GType pk_connection_get_type (void);
PkConnection *pk_connection_new (void);
gboolean pk_connection_valid (PkConnection *connection);
G_END_DECLS
#endif /* __PK_CONNECTION_H */