tree.h

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#ifndef __TREE_H
#define __TREE_H

typedef struct tree_entry {
    char *name;			/* The full path of directory */
    int sublevel;		/* Number of parent directories (slashes) */
    long submask;		/* Bitmask of existing sublevels after this entry */
    char *subname;		/* The last part of name (the actual name) */
    int mark;			/* Flag: Is this entry marked (e. g. for delete)? */
    struct tree_entry *next;	/* Next item in the list */
    struct tree_entry *prev;	/* Previous item in the list */
} tree_entry;

#include "dlg.h"
typedef struct {
    Widget     widget;
    tree_entry *tree_first;     	/* First entry in the list */
    tree_entry *tree_last;              /* Last entry in the list */
    tree_entry *selected_ptr;	        /* The selected directory */
    char       search_buffer [256];     /* Current search string */
    int        done;		        /* Flag: exit tree */
    char       check_name [MC_MAXPATHLEN];/* Directory which is been checked */
    tree_entry *check_start;		/* Start of checked subdirectories */
    tree_entry **tree_shown;	        /* Entries currently on screen */
    int        is_panel;		/* panel or plain widget flag */
    int        active;		        /* if it's currently selected */
    int        searching;	        /* Are we on searching mode? */
    int topdiff;    			/* The difference between the topmost shown and the selected */
} WTree;

#define tlines(t) (t->is_panel ? t->widget.lines-2 - (show_mini_info ? 2 : 0) : t->widget.lines)

int tree_init (char *current_dir, int lines);
void load_tree (WTree *tree);
void save_tree (WTree *tree);
void show_tree (WTree *tree);
void tree_chdir (WTree *tree, char *dir);
void tree_rescan_cmd (WTree *tree);
int tree_forget_cmd (WTree *tree);
void tree_copy (WTree *tree, char *default_dest);
void tree_move (WTree *tree, char *default_dest);
void tree_event (WTree *tree, int y);
char *tree (char *current_dir);

int search_tree (WTree *tree, char *text);

tree_entry *tree_add_entry (WTree *tree, char *name);
void tree_remove_entry (WTree *tree, char *name);
void tree_destroy (WTree *tree);
void tree_check (const char *subname);
void start_tree_check (WTree *tree);
void do_tree_check (WTree *tree, const char *subname);
void end_tree_check (WTree *tree);

void tree_move_backward (WTree *tree, int i);
void tree_move_forward (WTree *tree, int i);
int tree_move_to_parent (WTree *tree);
void tree_move_to_child (WTree *tree);
void tree_move_to_top (WTree *tree);
void tree_move_to_bottom (WTree *tree);

extern int tree_navigation_flag;
extern int xtree_mode;

WTree *tree_new (int is_panel, int y, int x, int lines, int cols);
extern WTree *the_tree;

#ifdef OS2_NT
#   define MC_TREE "mc.tre"
#else
#   define MC_TREE ".mc/tree"
#endif

#endif