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--Minetest
--Copyright (C) 2014 sapier
--
--This program is free software; you can redistribute it and/or modify
--it under the terms of the GNU Lesser General Public License as published by
--the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
--
--You should have received a copy of the GNU Lesser 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.
ui = {}
ui.childlist = {}
ui.default = nil
-- Whether fstk is currently showing its own formspec instead of active ui elements.
ui.overridden = false
--------------------------------------------------------------------------------
function ui.add(child)
--TODO check child
ui.childlist[child.name] = child
return child.name
end
--------------------------------------------------------------------------------
function ui.delete(child)
if ui.childlist[child.name] == nil then
return false
end
ui.childlist[child.name] = nil
return true
end
--------------------------------------------------------------------------------
function ui.set_default(name)
ui.default = name
end
--------------------------------------------------------------------------------
function ui.find_by_name(name)
return ui.childlist[name]
end
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- Internal functions not to be called from user
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
function ui.update()
ui.overridden = false
local formspec = {}
-- handle errors
if gamedata ~= nil and gamedata.reconnect_requested then
local error_message = core.formspec_escape(
gamedata.errormessage or "<none available>")
formspec = {
"size[14,8]",
"real_coordinates[true]",
"set_focus[btn_reconnect_yes;true]",
"box[0.5,1.2;13,5;#000]",
("textarea[0.5,1.2;13,5;;%s;%s]"):format(
fgettext("The server has requested a reconnect:"), error_message),
"button[2,6.6;4,1;btn_reconnect_yes;" .. fgettext("Reconnect") .. "]",
"button[8,6.6;4,1;btn_reconnect_no;" .. fgettext("Main menu") .. "]"
}
ui.overridden = true
elseif gamedata ~= nil and gamedata.errormessage ~= nil then
local error_message = core.formspec_escape(gamedata.errormessage)
local error_title
if string.find(gamedata.errormessage, "ModError") then
error_title = fgettext("An error occurred in a Lua script:")
else
error_title = fgettext("An error occurred:")
end
formspec = {
"size[14,8]",
"real_coordinates[true]",
"set_focus[btn_error_confirm;true]",
"box[0.5,1.2;13,5;#000]",
("textarea[0.5,1.2;13,5;;%s;%s]"):format(
error_title, error_message),
"button[5,6.6;4,1;btn_error_confirm;" .. fgettext("OK") .. "]"
}
ui.overridden = true
else
local active_toplevel_ui_elements = 0
for key,value in pairs(ui.childlist) do
if (value.type == "toplevel") then
local retval = value:get_formspec()
if retval ~= nil and retval ~= "" then
active_toplevel_ui_elements = active_toplevel_ui_elements + 1
table.insert(formspec, retval)
end
end
end
-- no need to show addons if there ain't a toplevel element
if (active_toplevel_ui_elements > 0) then
for key,value in pairs(ui.childlist) do
if (value.type == "addon") then
local retval = value:get_formspec()
if retval ~= nil and retval ~= "" then
table.insert(formspec, retval)
end
end
end
end
if (active_toplevel_ui_elements > 1) then
core.log("warning", "more than one active ui "..
"element, self most likely isn't intended")
end
if (active_toplevel_ui_elements == 0) then
core.log("warning", "no toplevel ui element "..
"active; switching to default")
ui.childlist[ui.default]:show()
formspec = {ui.childlist[ui.default]:get_formspec()}
end
end
core.update_formspec(table.concat(formspec))
end
--------------------------------------------------------------------------------
function ui.handle_buttons(fields)
for key,value in pairs(ui.childlist) do
local retval = value:handle_buttons(fields)
if retval then
ui.update()
return
end
end
end
--------------------------------------------------------------------------------
function ui.handle_events(event)
for key,value in pairs(ui.childlist) do
if value.handle_events ~= nil then
local retval = value:handle_events(event)
if retval then
return retval
end
end
end
end
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- initialize callbacks
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
core.button_handler = function(fields)
if fields["btn_reconnect_yes"] then
gamedata.reconnect_requested = false
gamedata.errormessage = nil
gamedata.do_reconnect = true
core.start()
return
elseif fields["btn_reconnect_no"] or fields["btn_error_confirm"] then
gamedata.errormessage = nil
gamedata.reconnect_requested = false
ui.update()
return
end
if ui.handle_buttons(fields) then
ui.update()
end
end
--------------------------------------------------------------------------------
core.event_handler = function(event)
-- Handle error messages
if ui.overridden then
if event == "MenuQuit" then
gamedata.errormessage = nil
gamedata.reconnect_requested = false
ui.update()
end
return
end
if ui.handle_events(event) then
ui.update()
return
end
if event == "Refresh" then
ui.update()
return
end
end
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