YSI_Menu

/*----------------------------------------------------------------------------*-
                    ============================
                    Y Sever Includes - Menu Core
                    ============================
Description:
    Allows you to define menus with as many rows as you like and handles the
    pages internally, allowing you to simply process the rows selected as if it
    was one huge long menu.
Legal:
    Copyright (C) 2007 Alex "Y_Less" Cole

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
    MA 02110-1301, USA.
Version:
    0.0.1
Changelog:
    23/11/07:
        First version.
Functions:
    Public:
        -
    Core:
        -
    Stock:
        -
    Static:
        -
    Inline:
        -
    API:
        -
Callbacks:
    -
Definitions:
    -
Enums:
    -
Macros:
    -
Tags:
    -
Variables:
    Global:
        -
    Static:
        -
Commands:
    -
Compile options:
    -
-*----------------------------------------------------------------------------*/

#if !defined MAX_MENU_LINE
    #define MAX_MENU_LINE (32)
#endif

#define NO_MENU     (-1)
#define NO_MENU_ROW (-1)

enum e_MENU_FLAGS (<<= 1)
{
    e_MENU_FLAGS_NONE,
    e_MENU_FLAGS_TWO = 1,
    e_MENU_FLAGS_ACTIVE,
    e_MENU_FLAGS_SHOWN
}

enum E_MENU_DATA
{
    E_MENU_DATA_TITLE[MAX_MENU_LINE],
    E_MENU_COL_HEAD0[MAX_MENU_LINE],
    E_MENU_COL_HEAD1[MAX_MENU_LINE],
    E_MENU_DATA_FIRST,
    E_MENU_DATA_ROWS,
    e_MENU_FLAGS:E_MENU_DATA_DATA,
    Float:E_MENU_DATA_X,
    Float:E_MENU_DATA_Y,
    Float:E_MENU_DATA_C1,
    Float:E_MENU_DATA_C2
}

enum E_MENU_ROW
{
    E_MENU_ROW_NEXT,
    e_MENU_FLAGS:E_MENU_ROW_DATA,
    E_MENU_ROW_COL1[MAX_MENU_LINE],
    E_MENU_ROW_COL2[MAX_MENU_LINE],
}

enum E_PLAYER_MENU
{
    Menu:E_PLAYER_MENU_REAL,
    E_PLAYER_MENU_MENU,
    E_PLAYER_MENU_PAGE
}

static
    YSI_g_sMenuData[MAX_DYN_MENUS][E_MENU_DATA],
    YSI_g_sMenuItems[MAX_MENU_ROWS][E_MENU_ROW],
    YSI_g_sPlayerMenus[MAX_PLAYERS][E_PLAYER_MENU],
    YSI_g_sUnusedRows;

#define Menu_IsValid(%1) \
    ((%1) >= 0 && (%1) < MAX_DYN_MENUS && YSI_g_sMenuData[(%1)][E_MENU_ROW_DATA] & e_MENU_FLAGS_ACTIVE)

Menu_Menu()
{
    YSI_g_sUnusedRows = 0
    for (new i = 0; i < MAX_MENU_ROWS - 1; i++)
    {
        YSI_g_sMenuItems[i][E_MENU_ROW_NEXT] = i + 1;
    }
    YSI_g_sMenuItems[MAX_MENU_ROWS - 1][E_MENU_ROW_NEXT] = NO_MENU_ROW;
}

stock Menu_Create(title[], cols, Float:x, Float:y, Float:col1wirdth, Float:col2width = 0.0)
{
    new
        i;
    for (i = 0; i < MAX_DYN_MENUS; i++)
    {
        if (!(YSI_g_sMenuData[i][E_MENU_DATA_DATA] & e_MENU_FLAGS_ACTIVE)) break;
    }
    if (i == MAX_DYN_MENUS) return NO_MENU;
    YSI_g_sMenuData[i][E_MENU_DATA_DATA] = e_MENU_FLAGS_ACTIVE | ((cols == 2) ? e_MENU_FLAGS_TWO : e_MENU_FLAGS_NONE);
    YSI_g_sMenuData[i][E_MENU_DATA_FIRST] = NO_MENU_ROW;
    YSI_g_sMenuData[i][E_MENU_DATA_ROWS] = 0;
    YSI_g_sMenuData[i][E_MENU_DATA_X] = x;
    YSI_g_sMenuData[i][E_MENU_DATA_Y] = y;
    YSI_g_sMenuData[i][E_MENU_COL_HEAD0][0] = '\0';
    YSI_g_sMenuData[i][E_MENU_COL_HEAD1][0] = '\0';
    YSI_g_sMenuData[i][E_MENU_DATA_C1] = col1width;
    YSI_g_sMenuData[i][E_MENU_DATA_C2] = col2width;
    strcpy(YSI_g_sMenuData[i][E_MENU_DATA_TITLE], title, MAX_MENU_LINE);
    return i;
}

stock Menu_AddRow(menuid, col1[], col2[] = "")
{
    if (!Menu_IsValid(menuid)) return NO_MENU_ROW;
    if (YSI_g_sUnusedRows == NO_MENU_ROW) return NO_MENU_ROW;
    new
        row = YSI_g_sUnusedRows;
    YSI_g_sUnusedRows = YSI_g_sMenuItems[row][E_MENU_ROW_NEXT];
    strcpy(YSI_g_sMenuItems[row][E_MENU_ROW_COL1], col1, MAX_MENU_LINE);
    strcpy(YSI_g_sMenuItems[row][E_MENU_ROW_COL2], col2, MAX_MENU_LINE);
    YSI_g_sMenuItems[row][E_MENU_ROW_DATA] = e_MENU_FLAGS_ACTIVE | ((col2[0]) ? e_MENU_FLAGS_TWO : e_MENU_FLAGS_NONE);
    new
        last = NO_MENU_ROW,
        cur = YSI_g_sMenuData[menu][E_MENU_DATA_FIRST];
    while (cur != NO_MENU_ROW)
    {
        last = cur;
        cur = YSI_g_sMenuItems[last][E_MENU_ROW_NEXT];
    }
    if (last == NO_MENU_ROW)
    {
        YSI_g_sMenuData[menu][E_MENU_DATA_FIRST] = row;
    }
    else
    {
        YSI_g_sMenuItems[last][E_MENU_ROW_NEXT] = row;
    }
    YSI_g_sMenuItems[cur][E_MENU_ROW_NEXT] = NO_MENU_ROW;
    return YSI_g_sMenuData[i][E_MENU_DATA_ROWS]++;
}

stock Menu_RemoveRow(menuid, rowid)
{

}

stock Menu_SetColumnHeader(menuid, colid, header[])
{
    if (!Menu_IsValid(menuid))
    {
        return 0;
    }
    if (colid == 0)
    {
        strcpy(YSI_g_sMenuData[menuid][E_MENU_COL_HEAD0], header, MAX_MENU_LINE);
    }
    else if (colid == 1)
    {
        strcpy(YSI_g_sMenuData[menuid][E_MENU_COL_HEAD1], header, MAX_MENU_LINE);
    }
    else
    {
        return 0;
    }
    return 1;
}

static stock Menu:Menu_CreateHeader(menu)
{
    new
        e_MENU_FLAGS:flags = YSI_g_sMenuData[menu][E_MENU_DATA_DATA],
        Menu:rMenu = CreateMenu(YSI_g_sMenuData[menu][E_MENU_DATA_TITLE], ((flags & e_MENU_FLAGS_TWO) ? (2) : (1)), YSI_g_sMenuData[menu][E_MENU_DATA_X], YSI_g_sMenuData[menu][E_MENU_DATA_Y], YSI_g_sMenuData[menu][E_MENU_DATA_C1], YSI_g_sMenuData[menu][E_MENU_DATA_C2]);
    if (rMenu == INVALID_MENU)
    {
        return INVALID_MENU;
    }
    SetMenuColumnHeader(rMenu, 0, YSI_g_sMenuData[menu][E_MENU_COL_HEAD0]);
    if (flags & e_MENU_FLAGS_TWO)
    {
        SetMenuColumnHeader(rMenu, 1, YSI_g_sMenuData[menu][E_MENU_COL_HEAD1]);
    }
    return rMenu;
}

static stock Menu_FindRow(start, row)
{
    new
        count = 0;
    while (count < row && start != NO_MENU_ROW)
    {
        start = YSI_g_sMenuItems[start][E_MENU_ROW_NEXT];
        count++;
    }
    return start;
}

static stock Menu_Generate(menu, start, type)
{
    new
        e_MENU_FLAGS:flags = YSI_g_sMenuData[menu][E_MENU_DATA_DATA] & e_MENU_FLAGS_TWO,
        Menu:rMenu = CreateMenu(YSI_g_sMenuData[menu][E_MENU_DATA_TITLE], ((flags) ? (2) : (1)), YSI_g_sMenuData[menu][E_MENU_DATA_X], YSI_g_sMenuData[menu][E_MENU_DATA_Y], YSI_g_sMenuData[menu][E_MENU_DATA_C1], YSI_g_sMenuData[menu][E_MENU_DATA_C2]);
    if (rMenu == INVALID_MENU)
    {
        return INVALID_MENU;
    }
    SetMenuColumnHeader(rMenu, 0, YSI_g_sMenuData[menu][E_MENU_COL_HEAD0]);
    if (flags)
    {
        SetMenuColumnHeader(rMenu, 1, YSI_g_sMenuData[menu][E_MENU_COL_HEAD1]);
    }
    new
        row = Menu_FindRow(YSI_g_sMenuData[i][E_MENU_DATA_FIRST], start);
    if (row == NO_MENU_ROW)
    {
        DestroyMenu(rMenu);
        return INVALID_MENU;
    }
    new
        end = start + 10 + type;
    do
    {
        AddMenuItem(rMenu, 0, YSI_g_sMenuItems[row][E_MENU_ROW_COL1]);
        if (flags)
        {
            AddMenuItem(rMenu, 1, YSI_g_sMenuItems[row][E_MENU_ROW_COL2]);
        }
        ;
    }
    while (++start < end && (row = YSI_g_sMenuItems[row][E_MENU_ROW_NEXT]) != NO_MENU_ROW);
    switch (type)
    {
        case 0:
        {
            AddMenuItem(rMenu, 0, "<- Back");
            if (flags)
            {
                AddMenuItem(rMenu, 1, "");
            }
            AddMenuItem(rMenu, 0, "Next ->");
            if (flags)
            {
                AddMenuItem(rMenu, 1, "");
            }
        }
        case 1:
        {
            AddMenuItem(rMenu, 0, "More");
            if (flags)
            {
                AddMenuItem(rMenu, 1, "");
            }
        }
    }
}

stock Menu_ShowForPlayer(playerid, menuid)
{
    if (!Menu_IsValid(menuid) || !IsPlayerConnected(playerid)) return 0;
    new
        page = 0,
        Menu:rMenu,
        count = YSI_g_sMenuData[menuid][E_MENU_DATA_ROWS];
    if (count > 22)
    {
        rMenu = Menu_Generate(menuid, 0, 0);
    }
    else if (count > 12)
    {
        rMenu = Menu_Generate(menuid, 0, 1);
    }
    else
    {
        rMenu = Menu_Generate(menuid, 0, 2);
    }
    if (rMenu != INVALID_MENU)
    {
        ShowMenuForPlayer(rMenu, playerid);
    }
    return 1;
}

Menu_OnPlayerSelectMenuRow(playerid, row)
{
    // TO-DO
    // Determine if they selected a real row or back/next from the system
    // If back/next alter page
    // If real row call OnPlayerSelectMenuRowEx with the row
}