#ifndef NAV_H
#define NAV_H

#include "doc.h"
#define HIST_MAX 32

struct nav_state {
	size_t histc, cur_doc;
	struct doc histv[HIST_MAX];
	size_t cur_ofs[HIST_MAX];
};

void nav_init(struct nav_state *ns);
void nav_fini(struct nav_state *ns);
void nav_pg_up(struct nav_state *ns);
void nav_pg_down(struct nav_state *ns);
void nav_redraw(struct nav_state *ns);

#endif