/**

  * @file transaction.h MSN transaction functions

  *

  * purple

  *

  * Purple is the legal property of its developers, whose names are too numerous

  * to list here.  Please refer to the COPYRIGHT file distributed with this

  * source distribution.

  *

  * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA

  */

 #ifndef _MSN_TRANSACTION_H

 #define _MSN_TRANSACTION_H

 typedef struct _MsnTransaction MsnTransaction;

 #include "command.h"

 #include "cmdproc.h"

 typedef void (*MsnTransCb)(MsnCmdProc *cmdproc, MsnCommand *cmd);

 typedef void (*MsnTimeoutCb)(MsnCmdProc *cmdproc, MsnTransaction *trans);

 typedef void (*MsnErrorCb)(MsnCmdProc *cmdproc, MsnTransaction *trans,

 						   int error);

 /**

  * A transaction. A sending command that will initiate the transaction.

  */

 struct _MsnTransaction

 {

 	MsnCmdProc *cmdproc;

 	unsigned int trId;

 	char *command;

 	char *params;

 	guint timer;

 	void *data; /**< The data to be used on the different callbacks. */

 	GHashTable *callbacks;

 	gboolean has_custom_callbacks;

 	MsnErrorCb error_cb;

 	MsnTimeoutCb timeout_cb;

 	char *payload;

 	size_t payload_len;

 	GQueue *queue;

 	MsnCommand *pendent_cmd; /**< The command that is waiting for the result of

 							   this transaction. */

 };

 MsnTransaction *msn_transaction_new(MsnCmdProc *cmdproc, const char *command,

 	const char *format, ...) G_GNUC_PRINTF(3, 4);

 void msn_transaction_destroy(MsnTransaction *trans);

 char *msn_transaction_to_string(MsnTransaction *trans);

 void msn_transaction_queue_cmd(MsnTransaction *trans, MsnCommand *cmd);

 void msn_transaction_unqueue_cmd(MsnTransaction *trans, MsnCmdProc *cmdproc);

 void msn_transaction_set_payload(MsnTransaction *trans,

 								 const char *payload, int payload_len);

 void msn_transaction_set_data(MsnTransaction *trans, void *data);

 void msn_transaction_add_cb(MsnTransaction *trans, char *answer,

 							MsnTransCb cb);

 void msn_transaction_set_error_cb(MsnTransaction *trans, MsnErrorCb cb);

 void msn_transaction_set_timeout_cb(MsnTransaction *trans, MsnTimeoutCb cb);

 #endif /* _MSN_TRANSACTION_H */