/**
 * @file lv_group_private.h
 *
 */

#ifndef LV_GROUP_PRIVATE_H
#define LV_GROUP_PRIVATE_H

#ifdef __cplusplus
extern "C" {
#endif

/*********************
 *      INCLUDES
 *********************/
#include "../misc/lv_ext_data.h"
#include "lv_group.h"

/*********************
 *      DEFINES
 *********************/

/**********************
 *      TYPEDEFS
 **********************/

/**
 * Groups can be used to logically hold objects so that they can be individually focused.
 * They are NOT for laying out objects on a screen (try layouts for that).
 */
struct _lv_group_t {
#if LV_USE_EXT_DATA
    lv_ext_data_t ext_data;
#endif
    lv_ll_t obj_ll;        /**< Linked list to store the objects in the group*/
    lv_obj_t ** obj_focus; /**< The object in focus*/

    lv_group_focus_cb_t focus_cb;              /**< A function to call when a new object is focused (optional)*/
    lv_group_edge_cb_t  edge_cb;               /**< A function to call when an edge is reached, no more focus
                                                    targets are available in this direction (to allow edge feedback
                                                    like a sound or a scroll bounce) */

    void * user_data;

    uint8_t frozen : 1;         /**< 1: can't focus to new object*/
    uint8_t editing : 1;        /**< 1: Edit mode, 0: Navigate mode*/
    uint8_t refocus_policy : 1; /**< 1: Focus prev if focused on deletion. 0: Focus next if focused on
                                   deletion.*/
    uint8_t wrap : 1;           /**< 1: Focus next/prev can wrap at end of list. 0: Focus next/prev stops at end
                                   of list.*/
};


/**********************
 * GLOBAL PROTOTYPES
 **********************/

/**
 * Init the group module
 * @remarks Internal function, do not call directly.
 */
void lv_group_init(void);

/**
 * Deinit the group module
 * @remarks Internal function, do not call directly.
 */
void lv_group_deinit(void);

/**********************
 *      MACROS
 **********************/

#ifdef __cplusplus
} /*extern "C"*/
#endif

#endif /*LV_GROUP_PRIVATE_H*/
