#ifndef WINDOW_TREE_H
# define WINDOW_TREE_H
# include <e.h>

/* XXX: First two have to be 0 and 1 because I use them with modulo. */
typedef enum
{
   TILING_SPLIT_HORIZONTAL = 0,
   TILING_SPLIT_VERTICAL = 1,
   TILING_SPLIT_FLOAT,
   TILING_SPLIT_LAST
} Tiling_Split_Type;

typedef struct _Window_Tree Window_Tree;

/* Root is level 0. Each node's split type is (level % 2). */
struct _Window_Tree
{
   EINA_INLIST;
   Window_Tree *parent;
   /* FIXME: client is falid iff children is null. Sholud enforce it. */
   Eina_Inlist *children;	/* Window_Tree * type */
   E_Client *client;
   double weight;
};

# define TILING_WINDOW_TREE_EDGE_LEFT (1 << 0)
# define TILING_WINDOW_TREE_EDGE_RIGHT (1 << 1)
# define TILING_WINDOW_TREE_EDGE_TOP (1 << 2)
# define TILING_WINDOW_TREE_EDGE_BOTTOM (1 << 3)

int tiling_window_tree_edges_get(Window_Tree * node);

void tiling_window_tree_free(Window_Tree * root);
void tiling_window_tree_walk(Window_Tree * root, void (*func) (void *));

Window_Tree *tiling_window_tree_add(Window_Tree * root, Window_Tree * parent,
    E_Client * client, Tiling_Split_Type split_type);

Window_Tree *tiling_window_tree_remove(Window_Tree * root, Window_Tree * item);

Window_Tree *tiling_window_tree_client_find(Window_Tree * root,
    E_Client * client);

void tiling_window_tree_apply(Window_Tree * root, Evas_Coord x, Evas_Coord y,
    Evas_Coord w, Evas_Coord h, Evas_Coord padding);

Eina_Bool tiling_window_tree_node_resize(Window_Tree * node, int w_dir,
    double w_diff, int h_dir, double h_diff);

void tiling_window_tree_node_move(Window_Tree * node, int cross_edge);

#endif