builtin/mainmenu/dlg_settings_advanced.lua

   1 --Minetest
   2 --Copyright (C) 2015 PilzAdam
   3 --
   4 --This program is free software; you can redistribute it and/or modify
   5 --it under the terms of the GNU Lesser General Public License as published by
   6 --the Free Software Foundation; either version 2.1 of the License, or
   7 --(at your option) any later version.
   8 --
   9 --This program is distributed in the hope that it will be useful,
  10 --but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 --MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 --GNU Lesser General Public License for more details.
  13 --
  14 --You should have received a copy of the GNU Lesser General Public License along
  15 --with this program; if not, write to the Free Software Foundation, Inc.,
  16 --51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 local FILENAME = "settingtypes.txt"
  19
  20 local CHAR_CLASSES = {
  21         SPACE = "[%s]",
  22         VARIABLE = "[%w_%-%.]",
  23         INTEGER = "[+-]?[%d]",
  24         FLOAT = "[+-]?[%d%.]",
  25         FLAGS = "[%w_%-%.,]",
  26 }
  27
  28 -- returns error message, or nil
  29 local function parse_setting_line(settings, line, read_all, base_level, allow_secure)
  30         -- comment
  31         local comment = line:match("^#" .. CHAR_CLASSES.SPACE .. "*(.*)$")
  32         if comment then
  33                 if settings.current_comment == "" then
  34                         settings.current_comment = comment
  35                 else
  36                         settings.current_comment = settings.current_comment .. "\n" .. comment
  37                 end
  38                 return
  39         end
  40
  41         -- clear current_comment so only comments directly above a setting are bound to it
  42         -- but keep a local reference to it for variables in the current line
  43         local current_comment = settings.current_comment
  44         settings.current_comment = ""
  45
  46         -- empty lines
  47         if line:match("^" .. CHAR_CLASSES.SPACE .. "*$") then
  48                 return
  49         end
  50
  51         -- category
  52         local stars, category = line:match("^%[([%*]*)([^%]]+)%]$")
  53         if category then
  54                 table.insert(settings, {
  55                         name = category,
  56                         level = stars:len() + base_level,
  57                         type = "category",
  58                 })
  59                 return
  60         end
  61
  62         -- settings
  63         local first_part, name, readable_name, setting_type = line:match("^"
  64                         -- this first capture group matches the whole first part,
  65                         --  so we can later strip it from the rest of the line
  66                         .. "("
  67                                 .. "([" .. CHAR_CLASSES.VARIABLE .. "+)" -- variable name
  68                                 .. CHAR_CLASSES.SPACE .. "*"
  69                                 .. "%(([^%)]*)%)"  -- readable name
  70                                 .. CHAR_CLASSES.SPACE .. "*"
  71                                 .. "(" .. CHAR_CLASSES.VARIABLE .. "+)" -- type
  72                                 .. CHAR_CLASSES.SPACE .. "*"
  73                         .. ")")
  74
  75         if not first_part then
  76                 return "Invalid line"
  77         end
  78
  79         if name:match("secure%.[.]*") and not allow_secure then
  80                 return "Tried to add \"secure.\" setting"
  81         end
  82
  83         if readable_name == "" then
  84                 readable_name = nil
  85         end
  86         local remaining_line = line:sub(first_part:len() + 1)
  87
  88         if setting_type == "int" then
  89                 local default, min, max = remaining_line:match("^"
  90                                 -- first int is required, the last 2 are optional
  91                                 .. "(" .. CHAR_CLASSES.INTEGER .. "+)" .. CHAR_CLASSES.SPACE .. "*"
  92                                 .. "(" .. CHAR_CLASSES.INTEGER .. "*)" .. CHAR_CLASSES.SPACE .. "*"
  93                                 .. "(" .. CHAR_CLASSES.INTEGER .. "*)"
  94                                 .. "$")
  95
  96                 if not default or not tonumber(default) then
  97                         return "Invalid integer setting"
  98                 end
  99
 100                 min = tonumber(min)
 101                 max = tonumber(max)
 102                 table.insert(settings, {
 103                         name = name,
 104                         readable_name = readable_name,
 105                         type = "int",
 106                         default = default,
 107                         min = min,
 108                         max = max,
 109                         comment = current_comment,
 110                 })
 111                 return
 112         end
 113
 114         if setting_type == "string" or setting_type == "noise_params"
 115                         or setting_type == "key" or setting_type == "v3f" then
 116                 local default = remaining_line:match("^(.*)$")
 117
 118                 if not default then
 119                         return "Invalid string setting"
 120                 end
 121                 if setting_type == "key" and not read_all then
 122                         -- ignore key type if read_all is false
 123                         return
 124                 end
 125
 126                 table.insert(settings, {
 127                         name = name,
 128                         readable_name = readable_name,
 129                         type = setting_type,
 130                         default = default,
 131                         comment = current_comment,
 132                 })
 133                 return
 134         end
 135
 136         if setting_type == "bool" then
 137                 if remaining_line ~= "false" and remaining_line ~= "true" then
 138                         return "Invalid boolean setting"
 139                 end
 140
 141                 table.insert(settings, {
 142                         name = name,
 143                         readable_name = readable_name,
 144                         type = "bool",
 145                         default = remaining_line,
 146                         comment = current_comment,
 147                 })
 148                 return
 149         end
 150
 151         if setting_type == "float" then
 152                 local default, min, max = remaining_line:match("^"
 153                                 -- first float is required, the last 2 are optional
 154                                 .. "(" .. CHAR_CLASSES.FLOAT .. "+)" .. CHAR_CLASSES.SPACE .. "*"
 155                                 .. "(" .. CHAR_CLASSES.FLOAT .. "*)" .. CHAR_CLASSES.SPACE .. "*"
 156                                 .. "(" .. CHAR_CLASSES.FLOAT .. "*)"
 157                                 .."$")
 158
 159                 if not default or not tonumber(default) then
 160                         return "Invalid float setting"
 161                 end
 162
 163                 min = tonumber(min)
 164                 max = tonumber(max)
 165                 table.insert(settings, {
 166                         name = name,
 167                         readable_name = readable_name,
 168                         type = "float",
 169                         default = default,
 170                         min = min,
 171                         max = max,
 172                         comment = current_comment,
 173                 })
 174                 return
 175         end
 176
 177         if setting_type == "enum" then
 178                 local default, values = remaining_line:match("^"
 179                                 -- first value (default) may be empty (i.e. is optional)
 180                                 .. "(" .. CHAR_CLASSES.VARIABLE .. "*)" .. CHAR_CLASSES.SPACE .. "*"
 181                                 .. "(" .. CHAR_CLASSES.FLAGS .. "+)"
 182                                 .. "$")
 183
 184                 if not default or values == "" then
 185                         return "Invalid enum setting"
 186                 end
 187
 188                 table.insert(settings, {
 189                         name = name,
 190                         readable_name = readable_name,
 191                         type = "enum",
 192                         default = default,
 193                         values = values:split(",", true),
 194                         comment = current_comment,
 195                 })
 196                 return
 197         end
 198
 199         if setting_type == "path" or setting_type == "filepath" then
 200                 local default = remaining_line:match("^(.*)$")
 201
 202                 if not default then
 203                         return "Invalid path setting"
 204                 end
 205
 206                 table.insert(settings, {
 207                         name = name,
 208                         readable_name = readable_name,
 209                         type = setting_type,
 210                         default = default,
 211                         comment = current_comment,
 212                 })
 213                 return
 214         end
 215
 216         if setting_type == "flags" then
 217                 local default, possible = remaining_line:match("^"
 218                                 -- first value (default) may be empty (i.e. is optional)
 219                                 -- this is implemented by making the last value optional, and
 220                                 -- swapping them around if it turns out empty.
 221                                 .. "(" .. CHAR_CLASSES.FLAGS .. "+)" .. CHAR_CLASSES.SPACE .. "*"
 222                                 .. "(" .. CHAR_CLASSES.FLAGS .. "*)"
 223                                 .. "$")
 224
 225                 if not default or not possible then
 226                         return "Invalid flags setting"
 227                 end
 228
 229                 if possible == "" then
 230                         possible = default
 231                         default = ""
 232                 end
 233
 234                 table.insert(settings, {
 235                         name = name,
 236                         readable_name = readable_name,
 237                         type = "flags",
 238                         default = default,
 239                         possible = possible,
 240                         comment = current_comment,
 241                 })
 242                 return
 243         end
 244
 245         return "Invalid setting type \"" .. setting_type .. "\""
 246 end
 247
 248 local function parse_single_file(file, filepath, read_all, result, base_level, allow_secure)
 249         -- store this helper variable in the table so it's easier to pass to parse_setting_line()
 250         result.current_comment = ""
 251
 252         local line = file:read("*line")
 253         while line do
 254                 local error_msg = parse_setting_line(result, line, read_all, base_level, allow_secure)
 255                 if error_msg then
 256                         core.log("error", error_msg .. " in " .. filepath .. " \"" .. line .. "\"")
 257                 end
 258                 line = file:read("*line")
 259         end
 260
 261         result.current_comment = nil
 262 end
 263
 264 -- read_all: whether to ignore certain setting types for GUI or not
 265 -- parse_mods: whether to parse settingtypes.txt in mods and games
 266 local function parse_config_file(read_all, parse_mods)
 267         local builtin_path = core.get_builtin_path() .. FILENAME
 268         local file = io.open(builtin_path, "r")
 269         local settings = {}
 270         if not file then
 271                 core.log("error", "Can't load " .. FILENAME)
 272                 return settings
 273         end
 274
 275         parse_single_file(file, builtin_path, read_all, settings, 0, true)
 276
 277         file:close()
 278
 279         if parse_mods then
 280                 -- Parse games
 281                 local games_category_initialized = false
 282                 local index = 1
 283                 local game = gamemgr.get_game(index)
 284                 while game do
 285                         local path = game.path .. DIR_DELIM .. FILENAME
 286                         local file = io.open(path, "r")
 287                         if file then
 288                                 if not games_category_initialized then
 289                                         local translation = fgettext_ne("Games"), -- not used, but needed for xgettext
 290                                         table.insert(settings, {
 291                                                 name = "Games",
 292                                                 level = 0,
 293                                                 type = "category",
 294                                         })
 295                                         games_category_initialized = true
 296                                 end
 297
 298                                 table.insert(settings, {
 299                                         name = game.name,
 300                                         level = 1,
 301                                         type = "category",
 302                                 })
 303
 304                                 parse_single_file(file, path, read_all, settings, 2, false)
 305
 306                                 file:close()
 307                         end
 308
 309                         index = index + 1
 310                         game = gamemgr.get_game(index)
 311                 end
 312
 313                 -- Parse mods
 314                 local mods_category_initialized = false
 315                 local mods = {}
 316                 get_mods(core.get_modpath(), mods)
 317                 for _, mod in ipairs(mods) do
 318                         local path = mod.path .. DIR_DELIM .. FILENAME
 319                         local file = io.open(path, "r")
 320                         if file then
 321                                 if not mods_category_initialized then
 322                                         local translation = fgettext_ne("Mods"), -- not used, but needed for xgettext
 323                                         table.insert(settings, {
 324                                                 name = "Mods",
 325                                                 level = 0,
 326                                                 type = "category",
 327                                         })
 328                                         mods_category_initialized = true
 329                                 end
 330
 331                                 table.insert(settings, {
 332                                         name = mod.name,
 333                                         level = 1,
 334                                         type = "category",
 335                                 })
 336
 337                                 parse_single_file(file, path, read_all, settings, 2, false)
 338
 339                                 file:close()
 340                         end
 341                 end
 342         end
 343
 344         return settings
 345 end
 346
 347 local function filter_settings(settings, searchstring)
 348         if not searchstring or searchstring == "" then
 349                 return settings, -1
 350         end
 351
 352         -- Setup the keyword list
 353         local keywords = {}
 354         for word in searchstring:lower():gmatch("%S+") do
 355                 table.insert(keywords, word)
 356         end
 357
 358         local result = {}
 359         local category_stack = {}
 360         local current_level = 0
 361         local best_setting = nil
 362         for _, entry in pairs(settings) do
 363                 if entry.type == "category" then
 364                         -- Remove all settingless categories
 365                         while #category_stack > 0 and entry.level <= current_level do
 366                                 table.remove(category_stack, #category_stack)
 367                                 if #category_stack > 0 then
 368                                         current_level = category_stack[#category_stack].level
 369                                 else
 370                                         current_level = 0
 371                                 end
 372                         end
 373
 374                         -- Push category onto stack
 375                         category_stack[#category_stack + 1] = entry
 376                         current_level = entry.level
 377                 else
 378                         -- See if setting matches keywords
 379                         local setting_score = 0
 380                         for k = 1, #keywords do
 381                                 local keyword = keywords[k]
 382
 383                                 if string.find(entry.name:lower(), keyword, 1, true) then
 384                                         setting_score = setting_score + 1
 385                                 end
 386
 387                                 if entry.readable_name and
 388                                                 string.find(fgettext(entry.readable_name):lower(), keyword, 1, true) then
 389                                         setting_score = setting_score + 1
 390                                 end
 391
 392                                 if entry.comment and
 393                                                 string.find(fgettext_ne(entry.comment):lower(), keyword, 1, true) then
 394                                         setting_score = setting_score + 1
 395                                 end
 396                         end
 397
 398                         -- Add setting to results if match
 399                         if setting_score > 0 then
 400                                 -- Add parent categories
 401                                 for _, category in pairs(category_stack) do
 402                                         result[#result + 1] = category
 403                                 end
 404                                 category_stack = {}
 405
 406                                 -- Add setting
 407                                 result[#result + 1] = entry
 408                                 entry.score = setting_score
 409
 410                                 if not best_setting or
 411                                                 setting_score > result[best_setting].score then
 412                                         best_setting = #result
 413                                 end
 414                         end
 415                 end
 416         end
 417         return result, best_setting or -1
 418 end
 419
 420 local full_settings = parse_config_file(false, true)
 421 local search_string = ""
 422 local settings = full_settings
 423 local selected_setting = 1
 424
 425 local function get_current_value(setting)
 426         local value = core.settings:get(setting.name)
 427         if value == nil then
 428                 value = setting.default
 429         end
 430         return value
 431 end
 432
 433 local function create_change_setting_formspec(dialogdata)
 434         local setting = settings[selected_setting]
 435         local formspec = "size[10,5.2,true]" ..
 436                         "button[5,4.5;2,1;btn_done;" .. fgettext("Save") .. "]" ..
 437                         "button[3,4.5;2,1;btn_cancel;" .. fgettext("Cancel") .. "]" ..
 438                         "tablecolumns[color;text]" ..
 439                         "tableoptions[background=#00000000;highlight=#00000000;border=false]" ..
 440                         "table[0,0;10,3;info;"
 441
 442         if setting.readable_name then
 443                 formspec = formspec .. "#FFFF00," .. fgettext(setting.readable_name)
 444                                 .. " (" .. core.formspec_escape(setting.name) .. "),"
 445         else
 446                 formspec = formspec .. "#FFFF00," .. core.formspec_escape(setting.name) .. ","
 447         end
 448
 449         formspec = formspec .. ",,"
 450
 451         local comment_text = ""
 452
 453         if setting.comment == "" then
 454                 comment_text = fgettext_ne("(No description of setting given)")
 455         else
 456                 comment_text = fgettext_ne(setting.comment)
 457         end
 458         for _, comment_line in ipairs(comment_text:split("\n", true)) do
 459                 formspec = formspec .. "," .. core.formspec_escape(comment_line) .. ","
 460         end
 461
 462         if setting.type == "flags" then
 463                 formspec = formspec .. ",,"
 464                                 .. "," .. fgettext("Please enter a comma seperated list of flags.") .. ","
 465                                 .. "," .. fgettext("Possible values are: ")
 466                                 .. core.formspec_escape(setting.possible:gsub(",", ", ")) .. ","
 467         elseif setting.type == "noise_params" then
 468                 formspec = formspec .. ",,"
 469                                 .. "," .. fgettext("Format:") .. ","
 470                                 .. "," .. fgettext("<offset>, <scale>, (<spreadX>, <spreadY>, <spreadZ>),") .. ","
 471                                 .. "," .. fgettext("<seed>, <octaves>, <persistence>, <lacunarity>") .. ","
 472         elseif setting.type == "v3f" then
 473                 formspec = formspec .. ",,"
 474                                 .. "," .. fgettext_ne("Format is 3 numbers separated by commas and inside brackets.") .. ","
 475         end
 476
 477         formspec = formspec:sub(1, -2) -- remove trailing comma
 478
 479         formspec = formspec .. ";1]"
 480
 481         if setting.type == "bool" then
 482                 local selected_index
 483                 if core.is_yes(get_current_value(setting)) then
 484                         selected_index = 2
 485                 else
 486                         selected_index = 1
 487                 end
 488                 formspec = formspec .. "dropdown[0.5,3.5;3,1;dd_setting_value;"
 489                                 .. fgettext("Disabled") .. "," .. fgettext("Enabled") .. ";"
 490                                 .. selected_index .. "]"
 491
 492         elseif setting.type == "enum" then
 493                 local selected_index = 0
 494                 formspec = formspec .. "dropdown[0.5,3.5;3,1;dd_setting_value;"
 495                 for index, value in ipairs(setting.values) do
 496                         -- translating value is not possible, since it's the value
 497                         --  that we set the setting to
 498                         formspec = formspec ..  core.formspec_escape(value) .. ","
 499                         if get_current_value(setting) == value then
 500                                 selected_index = index
 501                         end
 502                 end
 503                 if #setting.values > 0 then
 504                         formspec = formspec:sub(1, -2) -- remove trailing comma
 505                 end
 506                 formspec = formspec .. ";" .. selected_index .. "]"
 507
 508         elseif setting.type == "path" or setting.type == "filepath" then
 509                 local current_value = dialogdata.selected_path
 510                 if not current_value then
 511                         current_value = get_current_value(setting)
 512                 end
 513                 formspec = formspec .. "field[0.5,4;7.5,1;te_setting_value;;"
 514                                 .. core.formspec_escape(current_value) .. "]"
 515                                 .. "button[8,3.75;2,1;btn_browser_" .. setting.type .. ";" .. fgettext("Browse") .. "]"
 516
 517         else
 518                 -- TODO: fancy input for float, int, flags, noise_params, v3f
 519                 local width = 10
 520                 local text = get_current_value(setting)
 521                 if dialogdata.error_message then
 522                         formspec = formspec .. "tablecolumns[color;text]" ..
 523                         "tableoptions[background=#00000000;highlight=#00000000;border=false]" ..
 524                         "table[5,3.9;5,0.6;error_message;#FF0000,"
 525                                         .. core.formspec_escape(dialogdata.error_message) .. ";0]"
 526                         width = 5
 527                         if dialogdata.entered_text then
 528                                 text = dialogdata.entered_text
 529                         end
 530                 end
 531                 formspec = formspec .. "field[0.5,4;" .. width .. ",1;te_setting_value;;"
 532                                 .. core.formspec_escape(text) .. "]"
 533         end
 534         return formspec
 535 end
 536
 537 local function handle_change_setting_buttons(this, fields)
 538         if fields["btn_done"] or fields["key_enter"] then
 539                 local setting = settings[selected_setting]
 540                 if setting.type == "bool" then
 541                         local new_value = fields["dd_setting_value"]
 542                         -- Note: new_value is the actual (translated) value shown in the dropdown
 543                         core.settings:set_bool(setting.name, new_value == fgettext("Enabled"))
 544
 545                 elseif setting.type == "enum" then
 546                         local new_value = fields["dd_setting_value"]
 547                         core.settings:set(setting.name, new_value)
 548
 549                 elseif setting.type == "int" then
 550                         local new_value = tonumber(fields["te_setting_value"])
 551                         if not new_value or math.floor(new_value) ~= new_value then
 552                                 this.data.error_message = fgettext_ne("Please enter a valid integer.")
 553                                 this.data.entered_text = fields["te_setting_value"]
 554                                 core.update_formspec(this:get_formspec())
 555                                 return true
 556                         end
 557                         if setting.min and new_value < setting.min then
 558                                 this.data.error_message = fgettext_ne("The value must be at least $1.", setting.min)
 559                                 this.data.entered_text = fields["te_setting_value"]
 560                                 core.update_formspec(this:get_formspec())
 561                                 return true
 562                         end
 563                         if setting.max and new_value > setting.max then
 564                                 this.data.error_message = fgettext_ne("The value must not be larger than $1.", setting.max)
 565                                 this.data.entered_text = fields["te_setting_value"]
 566                                 core.update_formspec(this:get_formspec())
 567                                 return true
 568                         end
 569                         core.settings:set(setting.name, new_value)
 570
 571                 elseif setting.type == "float" then
 572                         local new_value = tonumber(fields["te_setting_value"])
 573                         if not new_value then
 574                                 this.data.error_message = fgettext_ne("Please enter a valid number.")
 575                                 this.data.entered_text = fields["te_setting_value"]
 576                                 core.update_formspec(this:get_formspec())
 577                                 return true
 578                         end
 579                         core.settings:set(setting.name, new_value)
 580
 581                 elseif setting.type == "flags" then
 582                         local new_value = fields["te_setting_value"]
 583                         for _,value in ipairs(new_value:split(",", true)) do
 584                                 value = value:trim()
 585                                 local possible = "," .. setting.possible .. ","
 586                                 if not possible:find("," .. value .. ",", 0, true) then
 587                                         this.data.error_message = fgettext_ne("\"$1\" is not a valid flag.", value)
 588                                         this.data.entered_text = fields["te_setting_value"]
 589                                         core.update_formspec(this:get_formspec())
 590                                         return true
 591                                 end
 592                         end
 593                         core.settings:set(setting.name, new_value)
 594
 595                 else
 596                         local new_value = fields["te_setting_value"]
 597                         core.settings:set(setting.name, new_value)
 598                 end
 599                 core.settings:write()
 600                 this:delete()
 601                 return true
 602         end
 603
 604         if fields["btn_cancel"] then
 605                 this:delete()
 606                 return true
 607         end
 608
 609         if fields["btn_browser_path"] then
 610                 core.show_path_select_dialog("dlg_browse_path",
 611                         fgettext_ne("Select directory"), false)
 612         end
 613
 614         if fields["btn_browser_filepath"] then
 615                 core.show_path_select_dialog("dlg_browse_path",
 616                         fgettext_ne("Select file"), true)
 617         end
 618
 619         if fields["dlg_browse_path_accepted"] then
 620                 this.data.selected_path = fields["dlg_browse_path_accepted"]
 621                 core.update_formspec(this:get_formspec())
 622         end
 623
 624         return false
 625 end
 626
 627 local function create_settings_formspec(tabview, name, tabdata)
 628         local formspec = "size[12,6.5;true]" ..
 629                         "tablecolumns[color;tree;text,width=32;text]" ..
 630                         "tableoptions[background=#00000000;border=false]" ..
 631                         "field[0.3,0.1;10.2,1;search_string;;" .. core.formspec_escape(search_string) .. "]" ..
 632                         "field_close_on_enter[search_string;false]" ..
 633                         "button[10.2,-0.2;2,1;search;" .. fgettext("Search") .. "]" ..
 634                         "table[0,0.8;12,4.5;list_settings;"
 635
 636         local current_level = 0
 637         for _, entry in ipairs(settings) do
 638                 local name
 639                 if not core.settings:get_bool("main_menu_technical_settings") and entry.readable_name then
 640                         name = fgettext_ne(entry.readable_name)
 641                 else
 642                         name = entry.name
 643                 end
 644
 645                 if entry.type == "category" then
 646                         current_level = entry.level
 647                         formspec = formspec .. "#FFFF00," .. current_level .. "," .. fgettext(name) .. ",,"
 648
 649                 elseif entry.type == "bool" then
 650                         local value = get_current_value(entry)
 651                         if core.is_yes(value) then
 652                                 value = fgettext("Enabled")
 653                         else
 654                                 value = fgettext("Disabled")
 655                         end
 656                         formspec = formspec .. "," .. (current_level + 1) .. "," .. core.formspec_escape(name) .. ","
 657                                         .. value .. ","
 658
 659                 elseif entry.type == "key" then
 660                         -- ignore key settings, since we have a special dialog for them
 661
 662                 else
 663                         formspec = formspec .. "," .. (current_level + 1) .. "," .. core.formspec_escape(name) .. ","
 664                                         .. core.formspec_escape(get_current_value(entry)) .. ","
 665                 end
 666         end
 667
 668         if #settings > 0 then
 669                 formspec = formspec:sub(1, -2) -- remove trailing comma
 670         end
 671         formspec = formspec .. ";" .. selected_setting .. "]" ..
 672                         "button[0,6;4,1;btn_back;".. fgettext("< Back to Settings page") .. "]" ..
 673                         "button[10,6;2,1;btn_edit;" .. fgettext("Edit") .. "]" ..
 674                         "button[7,6;3,1;btn_restore;" .. fgettext("Restore Default") .. "]" ..
 675                         "checkbox[0,5.3;cb_tech_settings;" .. fgettext("Show technical names") .. ";"
 676                                         .. dump(core.settings:get_bool("main_menu_technical_settings")) .. "]"
 677
 678         return formspec
 679 end
 680
 681 local function handle_settings_buttons(this, fields, tabname, tabdata)
 682         local list_enter = false
 683         if fields["list_settings"] then
 684                 selected_setting = core.get_table_index("list_settings")
 685                 if core.explode_table_event(fields["list_settings"]).type == "DCL" then
 686                         -- Directly toggle booleans
 687                         local setting = settings[selected_setting]
 688                         if setting and setting.type == "bool" then
 689                                 local current_value = get_current_value(setting)
 690                                 core.settings:set_bool(setting.name, not core.is_yes(current_value))
 691                                 core.settings:write()
 692                                 return true
 693                         else
 694                                 list_enter = true
 695                         end
 696                 else
 697                         return true
 698                 end
 699         end
 700
 701         if fields.search or fields.key_enter_field == "search_string" then
 702                 if search_string == fields.search_string then
 703                         if selected_setting > 0 then
 704                                 -- Go to next result on enter press
 705                                 local i = selected_setting + 1
 706                                 local looped = false
 707                                 while i > #settings or settings[i].type == "category" do
 708                                         i = i + 1
 709                                         if i > #settings then
 710                                                 -- Stop infinte looping
 711                                                 if looped then
 712                                                         return false
 713                                                 end
 714                                                 i = 1
 715                                                 looped = true
 716                                         end
 717                                 end
 718                                 selected_setting = i
 719                                 core.update_formspec(this:get_formspec())
 720                                 return true
 721                         end
 722                 else
 723                         -- Search for setting
 724                         search_string = fields.search_string
 725                         settings, selected_setting = filter_settings(full_settings, search_string)
 726                         core.update_formspec(this:get_formspec())
 727                 end
 728                 return true
 729         end
 730
 731         if fields["btn_edit"] or list_enter then
 732                 local setting = settings[selected_setting]
 733                 if setting and setting.type ~= "category" then
 734                         local edit_dialog = dialog_create("change_setting", create_change_setting_formspec,
 735                                         handle_change_setting_buttons)
 736                         edit_dialog:set_parent(this)
 737                         this:hide()
 738                         edit_dialog:show()
 739                 end
 740                 return true
 741         end
 742
 743         if fields["btn_restore"] then
 744                 local setting = settings[selected_setting]
 745                 if setting and setting.type ~= "category" then
 746                         core.settings:set(setting.name, setting.default)
 747                         core.settings:write()
 748                         core.update_formspec(this:get_formspec())
 749                 end
 750                 return true
 751         end
 752
 753         if fields["btn_back"] then
 754                 this:delete()
 755                 return true
 756         end
 757
 758         if fields["cb_tech_settings"] then
 759                 core.settings:set("main_menu_technical_settings", fields["cb_tech_settings"])
 760                 core.settings:write()
 761                 core.update_formspec(this:get_formspec())
 762                 return true
 763         end
 764
 765         return false
 766 end
 767
 768 function create_adv_settings_dlg()
 769         local dlg = dialog_create("settings_advanced",
 770                                 create_settings_formspec,
 771                                 handle_settings_buttons,
 772                                 nil)
 773
 774                                 return dlg
 775 end
 776
 777 -- Generate minetest.conf.example and settings_translation_file.cpp
 778
 779 --assert(loadfile(core.get_builtin_path().."mainmenu"..DIR_DELIM.."generate_from_settingtypes.lua"))(parse_config_file(true, false))