techpack/smartline/icta/submenu.lua

198 lines
5.9 KiB
Lua

--[[
ICTA Controller
===============
Part of the SmartLine mod
Copyright (C) 2018 Joachim Stolberg
LGPLv2.1+
See LICENSE.txt for more information
submenu.lua
A sub-menu control to generate a formspec sting for conditions and actions
]]--
local sl = smartline
local function index(list, x)
for idx, v in ipairs(list) do
if v == x then return idx end
end
return nil
end
-- generate the choice dependent part of the form
local function add_controls_to_table(tbl, kvDefinition, kvSelect)
local val = ""
local offs = 1.4
if kvDefinition[kvSelect.choice] then
local lControls = kvDefinition[kvSelect.choice].formspec
for idx,elem in ipairs(lControls) do
if elem.label and elem.label ~= "" then
tbl[#tbl+1] = "label[0,"..offs..";"..elem.label.."]"
offs = offs + 0.4
end
if elem.type == "numbers" or elem.type == "digits" or elem.type == "letters"
or elem.type == "ascii" then
val = kvSelect[elem.name] or elem.default
tbl[#tbl+1] = "field[0.3,"..(offs+0.2)..";8,1;"..elem.name..";;"..val.."]"
offs = offs + 1
elseif elem.type == "textlist" then
local l = elem.choices:split(",")
val = index(l, kvSelect[elem.name]) or elem.default
tbl[#tbl+1] = "dropdown[0.0,"..(offs)..";8.5,1.4;"..elem.name..";"..elem.choices..";"..val.."]"
offs = offs + 1
end
end
end
return tbl
end
local function default_data(kvDefinition, kvSelect)
local lControls = kvDefinition[kvSelect.choice].formspec
for idx,elem in ipairs(lControls) do
kvSelect[elem.name] = elem.default
end
kvSelect.button = kvDefinition[kvSelect.choice].button(kvSelect)
return kvSelect
end
-- Copy field/formspec data to the table kvSelect
-- kvDefinition: submenu formspec definition
-- kvSelect: form data
-- fields: formspec input
local function field_to_kvSelect(kvDefinition, kvSelect, fields)
local error = false
local lControls = kvDefinition[kvSelect.choice].formspec
for idx,elem in ipairs(lControls) do
if elem.type == "numbers" then
if fields[elem.name] then
if fields[elem.name]:find("^[%d ]+$") then
kvSelect[elem.name] = fields[elem.name]
else
kvSelect[elem.name] = elem.default
error = true
end
end
elseif elem.type == "digits" then -- including positions
if fields[elem.name] then
if fields[elem.name]:find("^[+%%-,%d]+$") then
kvSelect[elem.name] = fields[elem.name]
else
kvSelect[elem.name] = elem.default
error = true
end
end
elseif elem.type == "letters" then
if fields[elem.name] then
if fields[elem.name]:find("^[+-]?%a+$") then
kvSelect[elem.name] = fields[elem.name]
else
kvSelect[elem.name] = elem.default
error = true
end
end
elseif elem.type == "ascii" then
if fields[elem.name] then
kvSelect[elem.name] = fields[elem.name]
end
elseif elem.type == "textlist" then
if fields[elem.name] ~= nil then
kvSelect[elem.name] = fields[elem.name]
end
end
end
-- store user input of button text
if fields._button_ then
kvSelect._button_ = fields._button_
end
-- select button text
if error then
kvSelect.button = "invalid"
elseif kvSelect._button_ and kvSelect._button_ ~= "" then
kvSelect.button = kvSelect._button_
else
kvSelect.button = kvDefinition[kvSelect.choice].button(kvSelect)
end
return kvSelect
end
function smartline.submenu_verify(kvDefinition, kvSelect)
local error = false
local lControls = kvDefinition[kvSelect.choice].formspec
for idx,elem in ipairs(lControls) do
if elem.type == "numbers" then
if not kvSelect[elem.name]:find("^[%d ]+$") then
error = true
end
elseif elem.type == "digits" then -- including positions
if not kvSelect[elem.name]:find("^[+%%-,%d]+$") then
error = true
end
elseif elem.type == "letters" then
if not kvSelect[elem.name]:find("^[+-]?%a+$") then
error = true
end
elseif elem.type == "ascii" then
if kvSelect[elem.name] == "" or kvSelect[elem.name] == nil then
error = true
end
elseif elem.type == "textlist" then
if kvSelect[elem.name] == "" or kvSelect[elem.name] == nil then
error = true
end
end
end
return (error == false)
end
-- generate a formspec string from the given control definition
-- row, col: numbers to identify the control
-- title: Title text for the control
-- lKeys: list of keywords of selected choices according to fields
-- lChoice: list of possible choices for the control
-- kvDefinition: definitions of the choice dependent controls
-- kvSelect: data of the last selected item {choice, number, value, ...}
function smartline.submenu_generate_formspec(row, col, title, lKeys, lChoice, kvDefinition, kvSelect)
if kvSelect == nil or next(kvSelect) == nil then
kvSelect = {choice = "default"}
end
local tbl = {"size[8.2,9]"..
--default.gui_bg.. TODO
--default.gui_bg_img..
--default.gui_slots..
"field[0,0;0,0;_row_;;"..row.."]"..
"field[0,0;0,0;_col_;;"..col.."]"}
local sChoice = table.concat(lChoice, ",")
local idx = index(lKeys, kvSelect.choice) or 1
tbl[#tbl+1] = "label[0,0;"..title..":]"
tbl[#tbl+1] = "dropdown[0,0.5;8.5,1;choice;"..sChoice..";"..idx.."]"
tbl = add_controls_to_table(tbl, kvDefinition, kvSelect)
tbl[#tbl+1] = "field[0.2,8.7;4,1;_button_;Button text;"..(kvSelect._button_ or "").."]"
tbl[#tbl+1] = "button[4,8.4;2,1;_cancel_;cancel]"
tbl[#tbl+1] = "button[6,8.4;2,1;_exit_;ok]"
return table.concat(tbl)
end
-- return the selected and configured menu item based on user inputs (fields)
function smartline.submenu_eval_input(kvDefinition, lKeys, lChoice, kvSelect, fields)
-- determine selected choice
if fields.choice then
-- load with default values
local idx = index(lChoice, fields.choice) or 1
kvSelect = {choice = lKeys[idx]}
kvSelect = default_data(kvDefinition, kvSelect)
kvSelect = field_to_kvSelect(kvDefinition, kvSelect, fields)
else
-- add real data
kvSelect = field_to_kvSelect(kvDefinition, kvSelect, fields)
end
return kvSelect
end