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/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* menu
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* - configurable user interactive menu feature
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*
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* Copyright (C) 2004-2026 Leaflet <leaflet@leafok.com>
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*/
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#ifndef _MENU_H_
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#define _MENU_H_
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#include "bbs_cmd.h"
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#include "common.h"
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#include "trie_dict.h"
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#include <stdint.h>
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enum menu_constant_t
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{
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MAX_MENU_NAME_LENGTH = 30,
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MAX_ITEMS_PER_MENU = 256,
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MAX_MENUITEM_NAME_LENGTH = 256,
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MAX_MENUITEM_TEXT_LENGTH = 200,
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MAX_MENUITEM_ACTION_LENGTH = 30,
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MAX_MENUTITLE_TEXT_LENGTH = 100,
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MAX_MENU_SCR_NAME_LENGTH = 20,
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MAX_MENU_SCR_BUF_LENGTH = 2000,
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MAX_MENUS = 256,
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MAX_MENUITEMS = 5120,
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MAX_MENU_DEPTH = 50,
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};
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typedef uint64_t MENU_ID;
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typedef uint64_t MENU_ITEM_ID;
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typedef uint64_t MENU_SCREEN_ID;
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struct menu_item_t
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{
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int16_t row, col;
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char action[MAX_MENUITEM_ACTION_LENGTH];
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MENU_ID action_menu_id;
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bbs_cmd_handler action_cmd_handler;
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int8_t submenu;
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int priv, level;
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char name[MAX_MENUITEM_NAME_LENGTH];
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char text[MAX_MENUITEM_TEXT_LENGTH];
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};
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typedef struct menu_item_t MENU_ITEM;
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struct menu_title_t
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{
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int16_t row, col;
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int8_t show;
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char text[MAX_MENUTITLE_TEXT_LENGTH];
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};
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typedef struct menu_title_t MENU_TITLE;
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struct menu_screen_t
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{
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char name[MAX_MENU_SCR_NAME_LENGTH];
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int64_t buf_offset;
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int64_t buf_length;
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};
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typedef struct menu_screen_t MENU_SCREEN;
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struct menu_t
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{
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char name[MAX_MENU_NAME_LENGTH];
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MENU_TITLE title;
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char screen_name[MAX_MENU_SCR_NAME_LENGTH];
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MENU_SCREEN_ID screen_id;
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int8_t screen_show;
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int16_t screen_row, screen_col;
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MENU_ITEM_ID items[MAX_ITEMS_PER_MENU];
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int16_t item_count;
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int16_t page_row, page_col;
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int16_t page_item_limit;
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int8_t use_filter;
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bbs_cmd_handler filter_handler;
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};
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typedef struct menu_t MENU;
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struct menu_set_t
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{
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char shm_name[FILE_NAME_LEN];
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size_t shm_size;
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void *p_reserved;
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void *p_menu_pool;
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void *p_menu_item_pool;
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void *p_menu_screen_pool;
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char *p_menu_screen_buf;
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char *p_menu_screen_buf_free;
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int16_t menu_count;
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int16_t menu_item_count;
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int16_t menu_screen_count;
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TRIE_NODE *p_menu_name_dict;
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TRIE_NODE *p_menu_screen_dict;
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MENU_ID menu_id_path[MAX_MENU_DEPTH];
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int16_t menu_item_pos[MAX_MENU_DEPTH];
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int16_t choose_step;
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int8_t menu_item_display[MAX_ITEMS_PER_MENU];
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int16_t menu_item_r_row[MAX_ITEMS_PER_MENU];
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int16_t menu_item_r_col[MAX_ITEMS_PER_MENU];
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int16_t menu_item_page_id[MAX_ITEMS_PER_MENU];
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int8_t allow_exit;
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};
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typedef struct menu_set_t MENU_SET;
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extern MENU_SET bbs_menu;
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extern MENU_SET top10_menu;
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extern int load_menu(MENU_SET *p_menu_set, const char *conf_file);
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extern int unload_menu(MENU_SET *p_menu_set);
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extern int get_menu_shm_readonly(MENU_SET *p_menu_set);
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extern int set_menu_shm_readonly(MENU_SET *p_menu_set);
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extern int detach_menu_shm(MENU_SET *p_menu_set);
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extern int display_menu_cursor(MENU_SET *p_menu_set, int show);
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extern int menu_control(MENU_SET *p_menu_set, int key);
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extern int display_menu(MENU_SET *p_menu_set);
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inline MENU *get_menu(MENU_SET *p_menu_set, const char *menu_name)
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{
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MENU *value = NULL;
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trie_dict_get(p_menu_set->p_menu_name_dict, menu_name, (int64_t *)&value);
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return ((MENU *)value);
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}
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inline MENU *get_menu_by_id(MENU_SET *p_menu_set, MENU_ID menu_id)
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{
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if (menu_id < 0 || menu_id >= p_menu_set->menu_count)
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{
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return NULL;
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}
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return (MENU *)((char *)(p_menu_set->p_menu_pool) + sizeof(MENU) * menu_id);
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}
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inline MENU_ITEM *get_menu_item_by_id(MENU_SET *p_menu_set, MENU_ITEM_ID menu_item_id)
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{
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if (menu_item_id < 0 || menu_item_id >= p_menu_set->menu_item_count)
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{
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return NULL;
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}
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return (MENU_ITEM *)((char *)(p_menu_set->p_menu_item_pool) + sizeof(MENU_ITEM) * menu_item_id);
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}
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inline MENU_SCREEN *get_menu_screen_by_id(MENU_SET *p_menu_set, MENU_SCREEN_ID menu_screen_id)
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{
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if (menu_screen_id < 0 || menu_screen_id >= p_menu_set->menu_screen_count)
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{
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return NULL;
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}
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return (MENU_SCREEN *)((char *)(p_menu_set->p_menu_screen_pool) + sizeof(MENU_ITEM) * menu_screen_id);
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}
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#endif //_MENU_H_
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