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/*
* matrix-statetable.h
*
*
* Copyright (c) Openmarket UK Ltd 2015
*
* 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 MATRIX_STATETABLE_H_
#define MATRIX_STATETABLE_H_
#include <glib.h>
struct _MatrixRoomEvent;
struct _JsonObject;
/* The state event table is a hashtable which maps from event type to
* another hashtable, which maps from state key to content, which is itself a
* MatrixRoomEvent.
*
*/
typedef GHashTable MatrixRoomStateEventTable;
/**
* The type of a function which can be passed into matrix_statetable_update
* to be called to handle an update
*/
typedef void (*MatrixStateUpdateCallback)(const gchar *event_type,
const gchar *state_key, struct _MatrixRoomEvent *old_state,
struct _MatrixRoomEvent *new_state, gpointer user_data);
/**
* create a new, empty, state table
*/
MatrixRoomStateEventTable *matrix_statetable_new();
/**
* free a state table
*/
void matrix_statetable_destroy(MatrixRoomStateEventTable *table);
/**
* look up a particular bit of state
*
* @returns null if this key ies not known
*/
struct _MatrixRoomEvent *matrix_statetable_get_event(
MatrixRoomStateEventTable *state_table, const gchar *event_type,
const gchar *state_key);
/**
* Update a state table with a new state event
*/
void matrix_statetable_update(MatrixRoomStateEventTable *state_table,
struct _JsonObject *json_event_obj,
MatrixStateUpdateCallback callback, gpointer user_data);
/**
* If the room has an official name, or an alias, return it
*
* @returns a string which should be freed
*/
gchar *matrix_statetable_get_room_alias(MatrixRoomStateEventTable *state_table);
#endif /* MATRIX_STATETABLE_H_ */
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