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https://github.com/minetest/minetest.git
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Fix crash on using cursor keys in client menu without selected server Add support for non fixed size tabviews
173 lines
4.7 KiB
Lua
173 lines
4.7 KiB
Lua
--Minetest
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--Copyright (C) 2014 sapier
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--
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--self 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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--self 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 self 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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--------------------------------------------------------------------------------
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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.errormessage ~= nil then
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formspec = "size[12,3.2]" ..
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"textarea[1,1;10,2;;ERROR: " ..
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core.formspec_escape(gamedata.errormessage) ..
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";]"..
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"button[4.5,2.5;3,0.5;btn_error_confirm;" .. fgettext("Ok") .. "]"
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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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formspec = 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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formspec = 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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print("WARNING: ui manager detected more then one active ui 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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print("WARNING: not a single toplevel ui element 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(formspec)
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end
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--------------------------------------------------------------------------------
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function ui.handle_buttons(fields)
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if fields["btn_error_confirm"] then
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gamedata.errormessage = nil
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update_menu()
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return
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end
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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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print("event handled by: " .. key)
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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_error_confirm"] then
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gamedata.errormessage = nil
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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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