/**
 * Navit, a modular navigation system.
 * Copyright (C) 2005-2008 Navit Team
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * 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 Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */

#ifndef NAVIT_ITEM_H
#define NAVIT_ITEM_H

#ifdef __cplusplus
extern "C" {
#endif

enum item_type {
#define ITEM2(x,y) type_##y=x,
#define ITEM(x) type_##x,
#include "item_def.h"
#undef ITEM2
#undef ITEM
};

#include "attr.h"


/* NOTE: we treat districts as towns for now, since
   a) navit does not implement district search yet
   b) OSM "place=suburb" maps to type_district in osm2navit. with the OSM USA maps,
      there are many "suburbs" that users will consider towns (not districts/counties);
      we want navit's town search to find them
*/
#define item_is_town(item) ((item).type >= type_town_label && (item).type <= type_district_label_1e7)
#define item_is_street(item) ((item).type >= type_street_nopass && (item).type <= type_ferry)

#define item_is_equal_id(a,b) ((a).id_hi == (b).id_hi && (a).id_lo == (b).id_lo)
#define item_is_equal(a,b) (item_is_equal_id(a,b) && (a).map == (b).map)

struct coord;

struct item_methods {
	void (*item_coord_rewind)(void *priv_data);
	int (*item_coord_get)(void *priv_data, struct coord *c, int count);
	void (*item_attr_rewind)(void *priv_data);
	int (*item_attr_get)(void *priv_data, enum attr_type attr_type, struct attr *attr);
	int (*item_coord_is_node)(void *priv_data);
};

struct item {
	enum item_type type;
	int id_hi;
	int id_lo;
	struct map *map;
	struct item_methods *meth;
	void *priv_data;
};

/* prototypes */
enum attr_type;
enum item_type;
struct attr;
struct coord;
struct item;
struct item_hash;
void item_coord_rewind(struct item *it);
int item_coord_get(struct item *it, struct coord *c, int count);
int item_coord_get_pro(struct item *it, struct coord *c, int count, enum projection pro);
/* does the next returned coordinate mark a node */
int item_coord_is_node(struct item *it);
void item_attr_rewind(struct item *it);
int item_attr_get(struct item *it, enum attr_type attr_type, struct attr *attr);
struct item *item_new(char *type, int zoom);
enum item_type item_from_name(const char *name);
char *item_to_name(enum item_type item);
struct item_hash *item_hash_new(void);
void item_hash_insert(struct item_hash *h, struct item *item, void *val);
int item_hash_remove(struct item_hash *h, struct item *item);
void *item_hash_lookup(struct item_hash *h, struct item *item);
void item_hash_destroy(struct item_hash *h);
/* end of prototypes */


#ifdef __cplusplus
}
/* __cplusplus */
#endif

/* NAVIT_ITEM_H */
#endif