/** \file listbox.h
 *  \brief Header: WListbox widget
 */

#ifndef MC__WIDGET_LISTBOX_H
#define MC__WIDGET_LISTBOX_H

/*** typedefs(not structures) and defined constants **********************************************/

#define LISTBOX(x) ((WListbox *) (x))
#define LENTRY(x)  ((WLEntry *) (x))

/*** enums ***************************************************************************************/

/* callback should return one of the following values */
typedef enum
{
    LISTBOX_CONT, /* continue */
    LISTBOX_DONE  /* finish dialog */
} lcback_ret_t;

typedef enum
{
    LISTBOX_APPEND_AT_END = 0, /* append at the end */
    LISTBOX_APPEND_BEFORE,     /* insert before current */
    LISTBOX_APPEND_AFTER,      /* insert after current */
    LISTBOX_APPEND_SORTED      /* insert alphabetically */
} listbox_append_t;

/*** structures declarations (and typedefs of structures)*****************************************/

struct WListbox;
typedef lcback_ret_t (*lcback_fn) (struct WListbox *l);

typedef struct WLEntry
{
    char *text; /* Text to display */
    int hotkey;
    void *data;         /* Client information */
    gboolean free_data; /* Whether to free the data on entry's removal */
} WLEntry;

typedef struct WListbox
{
    Widget widget;
    GQueue *list;              /* Pointer to the list of WLEntry */
    int top;                   /* The first element displayed */
    int current;               /* The current element displayed */
    gboolean allow_duplicates; /* Do we allow duplicates on the list? */
    gboolean scrollbar;        /* Draw a scrollbar? */
    gboolean deletable;        /* Can list entries be deleted? */
    lcback_fn callback;        /* The callback function */
    int cursor_x, cursor_y;    /* Cache the values */
} WListbox;

/*** global variables defined in .c file *********************************************************/

extern const global_keymap_t *listbox_map;

/*** declarations of public functions ************************************************************/

WListbox *listbox_new (int y, int x, int height, int width, gboolean deletable, lcback_fn callback);
int listbox_search_text (WListbox *l, const char *text);
int listbox_search_data (WListbox *l, const void *data);
void listbox_select_first (WListbox *l);
void listbox_select_last (WListbox *l);
void listbox_set_current (WListbox *l, int dest);
int listbox_get_length (const WListbox *l);
void listbox_get_current (WListbox *l, char **string, void **extra);
WLEntry *listbox_get_nth_entry (const WListbox *l, int pos);
GList *listbox_get_first_link (const WListbox *l);
void listbox_remove_current (WListbox *l);
gboolean listbox_is_empty (const WListbox *l);
void listbox_set_list (WListbox *l, GQueue *list);
void listbox_remove_list (WListbox *l);
char *listbox_add_item (WListbox *l, listbox_append_t pos, int hotkey, const char *text, void *data,
                        gboolean free_data);
char *listbox_add_item_take (WListbox *l, listbox_append_t pos, int hotkey, char *text, void *data,
                             gboolean free_data);

/*** inline functions ****************************************************************************/

#endif /* MC__WIDGET_LISTBOX_H */