/* stats_tree_priv.h
 * implementor's API for stats_tree
 * 2005, Luis E. G. Ontanon
 *
 * $Id$
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 * 
 * 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 02110-1301 USA.
 */

#ifndef __STATS_TREE_PRIV_H
#define  __STATS_TREE_PRIV_H

#include "stats_tree.h"
#include "ws_symbol_export.h"

#define INDENT_MAX 32
#define NUM_BUF_SIZE 32

/** implementations should define this to contain its own node related data
 * as well as some operations on it */
typedef struct _st_node_pres st_node_pres;

/** implementations should define this to contain its own dynamic tree related data
* as well as some operations on it */
typedef struct _tree_pres tree_pres;

/** implementations should define this to contain its own static tree related data
* as well as some operations on it */
typedef struct _tree_cfg_pres tree_cfg_pres;


typedef struct _stat_node stat_node;
typedef struct _stats_tree_cfg stats_tree_cfg;

typedef struct _range_pair {
	gint floor;
	gint ceil;
} range_pair_t;

struct _stat_node {
	gchar*			name;
	int			id;
	
	/** the counter it keeps */
	gint			counter;

	/** children nodes by name */
	GHashTable		*hash;
	
	/** the owner of this node */
	stats_tree		*st;
	
	/** relatives */
	stat_node		*parent;
	stat_node		*children;
	stat_node		*next;

	/** used to check if value is within range */
	range_pair_t		*rng;
	
	/** node presentation data */
	st_node_pres		*pr;
};

struct _stats_tree {
	/** the "class" from which it's derived */
	stats_tree_cfg		*cfg;
	
	char			*filter;
	
	/* times */
	double			start;
	double			elapsed;

   /** used to lookup named parents:
	*    key: parent node name
	*  value: parent node
	*/
	GHashTable		*names;
	
   /** used for quicker lookups of parent nodes */
	GPtrArray		*parents;
		
	/**
	 *  tree representation
	 * 	to be defined (if needed) by the implementations
	 */
	tree_pres		*pr;
	
	/** every tree in nature has one */
	stat_node		root;
};

struct _stats_tree_cfg {
	gchar*			abbr;
	gchar*			name;
	gchar*			tapname;
	register_stat_group_t	stat_group;
	
	gboolean in_use;
	gboolean plugin;

	/** dissector defined callbacks */
	stat_tree_packet_cb packet;
	stat_tree_init_cb init;
	stat_tree_cleanup_cb cleanup;

	/** tap listener flags for the per-packet callback */
	guint flags;
	
	/*
	 * node presentation callbacks
	 */

	/** last to be called at node creation */
	void (*setup_node_pr)(stat_node*);
	
	/** last to be called at node destruction */
	void (*free_node_pr)(stat_node*);
	
	/** to be called for every node in the tree */
	void (*draw_node)(stat_node*);
	void (*reset_node)(stat_node*);
	
	/**
	 * tree presentation callbacks
	 */
	tree_cfg_pres *pr;
	
	
	tree_pres *(*new_tree_pr)(stats_tree*);
	void (*free_tree_pr)(stats_tree*);
	void (*draw_tree)(stats_tree*);
	void (*reset_tree)(stats_tree*);
};

/* guess what, this is it! */
WS_DLL_PUBLIC void stats_tree_presentation(void (*registry_iterator)(gpointer,gpointer,gpointer),
				    void (*setup_node_pr)(stat_node*),
				    void (*free_node_pr)(stat_node*),
				    void (*draw_node)(stat_node*),
				    void (*reset_node)(stat_node*),
				    tree_pres *(*new_tree_pr)(stats_tree*),
				    void (*free_tree_pr)(stats_tree*),
				    void (*draw_tree)(stats_tree*),
				    void (*reset_tree)(stats_tree*),
				    void *data);

WS_DLL_PUBLIC stats_tree *stats_tree_new(stats_tree_cfg *cfg, tree_pres *pr, const char *filter);

/** callback for taps */
WS_DLL_PUBLIC int  stats_tree_packet(void*, packet_info*, epan_dissect_t*, const void *);

/** callback for reset */
WS_DLL_PUBLIC void stats_tree_reset(void *p_st);

/** callback for clear */
WS_DLL_PUBLIC void stats_tree_reinit(void *p_st);

/* callback for destoy */
WS_DLL_PUBLIC void stats_tree_free(stats_tree *st);

/** given an optarg splits the abbr part
   and returns a newly allocated buffer containing it */
WS_DLL_PUBLIC gchar *stats_tree_get_abbr(const gchar *optarg);

/** obtains a stats tree from the registry given its abbr */
WS_DLL_PUBLIC stats_tree_cfg *stats_tree_get_cfg_by_abbr(gchar *abbr);

/** obtains a stats tree list from the registry 
    caller should free returned list with  g_list_free() */
WS_DLL_PUBLIC GList *stats_tree_get_cfg_list(void);

/** extracts node data as strings from a stat_node into
   the buffers given by value, rate and precent
   if NULL they are ignored */
WS_DLL_PUBLIC void stats_tree_get_strs_from_node(const stat_node *node,
					  gchar *value,
					  gchar *rate,
					  gchar *percent);

/** populates the given GString with a tree representation of a branch given by node,
   using indent spaces as indentation */
WS_DLL_PUBLIC void stats_tree_branch_to_str(const stat_node *node,
				     GString *s,
				     guint indent);

/** used to calcuate the size of the indentation and the longest string */
WS_DLL_PUBLIC guint stats_tree_branch_max_namelen(const stat_node *node, guint indent);

/** a text representation of a node,
   if buffer is NULL returns a newly allocated string */
WS_DLL_PUBLIC gchar *stats_tree_node_to_str(const stat_node *node,
				     gchar *buffer, guint len);

#endif /* __STATS_TREE_PRIV_H */
