mirror of
https://github.com/minetest/minetest.git
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196 lines
5.6 KiB
Lua
196 lines
5.6 KiB
Lua
--Minetest
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--Copyright (C) 2014 sapier
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--
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--This program is free software; you can redistribute it and/or modify
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--it under the terms of the GNU Lesser General Public License as published by
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--the Free Software Foundation; either version 2.1 of the License, or
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--(at your option) any later version.
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--
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--This program is distributed in the hope that it will be useful,
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--but WITHOUT ANY WARRANTY; without even the implied warranty of
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--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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--GNU Lesser General Public License for more details.
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--
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--You should have received a copy of the GNU Lesser General Public License along
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--with this program; if not, write to the Free Software Foundation, Inc.,
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--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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ui = {}
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ui.childlist = {}
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ui.default = nil
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--------------------------------------------------------------------------------
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function ui.add(child)
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--TODO check child
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ui.childlist[child.name] = child
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return child.name
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end
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--------------------------------------------------------------------------------
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function ui.delete(child)
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if ui.childlist[child.name] == nil then
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return false
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end
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ui.childlist[child.name] = nil
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return true
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end
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--------------------------------------------------------------------------------
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function ui.set_default(name)
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ui.default = name
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end
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--------------------------------------------------------------------------------
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function ui.find_by_name(name)
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return ui.childlist[name]
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end
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--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
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-- Internal functions not to be called from user
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--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
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function ui.update()
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local formspec = {}
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-- handle errors
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if gamedata ~= nil and gamedata.reconnect_requested then
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local error_message = core.formspec_escape(
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gamedata.errormessage or "<none available>")
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formspec = {
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"size[14,8]",
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"real_coordinates[true]",
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("textarea[0.5,1.2;13,5;;%s;%s]"):format(
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fgettext("The server has requested a reconnect:"), error_message),
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"box[0.5,1.2;13,5;#000]",
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"button[2,6.6;4,1;btn_reconnect_yes;" .. fgettext("Reconnect") .. "]",
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"button[8,6.6;4,1;btn_reconnect_no;" .. fgettext("Main menu") .. "]"
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}
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elseif gamedata ~= nil and gamedata.errormessage ~= nil then
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local error_message = core.formspec_escape(gamedata.errormessage)
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local error_title
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if string.find(gamedata.errormessage, "ModError") then
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error_title = fgettext("An error occurred in a Lua script:")
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else
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error_title = fgettext("An error occurred:")
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end
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formspec = {
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"size[14,8]",
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"real_coordinates[true]",
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("textarea[0.5,1.2;13,5;;%s;%s]"):format(
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error_title, error_message),
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"box[0.5,1.2;13,5;#000]",
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"button[5,6.6;4,1;btn_error_confirm;" .. fgettext("Ok") .. "]"
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}
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else
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local active_toplevel_ui_elements = 0
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for key,value in pairs(ui.childlist) do
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if (value.type == "toplevel") then
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local retval = value:get_formspec()
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if retval ~= nil and retval ~= "" then
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active_toplevel_ui_elements = active_toplevel_ui_elements + 1
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table.insert(formspec, retval)
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end
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end
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end
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-- no need to show addons if there ain't a toplevel element
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if (active_toplevel_ui_elements > 0) then
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for key,value in pairs(ui.childlist) do
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if (value.type == "addon") then
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local retval = value:get_formspec()
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if retval ~= nil and retval ~= "" then
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table.insert(formspec, retval)
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end
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end
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end
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end
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if (active_toplevel_ui_elements > 1) then
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core.log("warning", "more than one active ui "..
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"element, self most likely isn't intended")
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end
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if (active_toplevel_ui_elements == 0) then
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core.log("warning", "no toplevel ui element "..
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"active; switching to default")
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ui.childlist[ui.default]:show()
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formspec = {ui.childlist[ui.default]:get_formspec()}
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end
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end
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core.update_formspec(table.concat(formspec))
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end
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--------------------------------------------------------------------------------
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function ui.handle_buttons(fields)
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for key,value in pairs(ui.childlist) do
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local retval = value:handle_buttons(fields)
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if retval then
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ui.update()
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return
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end
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end
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end
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--------------------------------------------------------------------------------
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function ui.handle_events(event)
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for key,value in pairs(ui.childlist) do
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if value.handle_events ~= nil then
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local retval = value:handle_events(event)
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if retval then
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return retval
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end
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end
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end
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end
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--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
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-- initialize callbacks
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--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
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core.button_handler = function(fields)
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if fields["btn_reconnect_yes"] then
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gamedata.reconnect_requested = false
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gamedata.errormessage = nil
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gamedata.do_reconnect = true
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core.start()
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return
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elseif fields["btn_reconnect_no"] or fields["btn_error_confirm"] then
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gamedata.errormessage = nil
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gamedata.reconnect_requested = false
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ui.update()
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return
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end
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if ui.handle_buttons(fields) then
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ui.update()
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end
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end
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--------------------------------------------------------------------------------
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core.event_handler = function(event)
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if ui.handle_events(event) then
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ui.update()
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return
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end
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if event == "Refresh" then
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ui.update()
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return
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end
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end
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