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author | sapier <Sapier at GMX dot net> | 2014-04-18 15:39:15 +0200 |
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committer | sapier <Sapier at GMX dot net> | 2014-05-16 22:57:14 +0200 |
commit | c3984569c06dc3c2890516e95adc38dcab9ec89a (patch) | |
tree | c3b134eb11cadad6b70ff866e4c9e1167b509235 /builtin/fstk/ui.lua | |
parent | 34d872628d5099ae520dd92433e211f561aaf611 (diff) | |
download | minetest-c3984569c06dc3c2890516e95adc38dcab9ec89a.tar.gz minetest-c3984569c06dc3c2890516e95adc38dcab9ec89a.tar.bz2 minetest-c3984569c06dc3c2890516e95adc38dcab9ec89a.zip |
Add formspec toolkit and refactor mainmenu to use it
Fix crash on using cursor keys in client menu without selected server
Add support for non fixed size tabviews
Diffstat (limited to 'builtin/fstk/ui.lua')
-rw-r--r-- | builtin/fstk/ui.lua | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/builtin/fstk/ui.lua b/builtin/fstk/ui.lua new file mode 100644 index 000000000..e0438247c --- /dev/null +++ b/builtin/fstk/ui.lua @@ -0,0 +1,172 @@ +--Minetest +--Copyright (C) 2014 sapier +-- +--self 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. +-- +--self 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 self 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 + +-------------------------------------------------------------------------------- +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() + local formspec = "" + + -- handle errors + if gamedata ~= nil and gamedata.errormessage ~= nil then + formspec = "size[12,3.2]" .. + "textarea[1,1;10,2;;ERROR: " .. + core.formspec_escape(gamedata.errormessage) .. + ";]".. + "button[4.5,2.5;3,0.5;btn_error_confirm;" .. fgettext("Ok") .. "]" + 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 + formspec = 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 + formspec = formspec .. retval + end + end + end + end + + if (active_toplevel_ui_elements > 1) then + print("WARNING: ui manager detected more then one active ui element, self most likely isn't intended") + end + + if (active_toplevel_ui_elements == 0) then + print("WARNING: not a single toplevel ui element active switching to default") + ui.childlist[ui.default]:show() + formspec = ui.childlist[ui.default]:get_formspec() + end + end + core.update_formspec(formspec) +end + +-------------------------------------------------------------------------------- +function ui.handle_buttons(fields) + + if fields["btn_error_confirm"] then + gamedata.errormessage = nil + update_menu() + return + end + + 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 + print("event handled by: " .. key) + return retval + end + end + end +end + +-------------------------------------------------------------------------------- +-------------------------------------------------------------------------------- +-- initialize callbacks +-------------------------------------------------------------------------------- +-------------------------------------------------------------------------------- +core.button_handler = function(fields) + if fields["btn_error_confirm"] then + gamedata.errormessage = nil + ui.update() + return + end + + if ui.handle_buttons(fields) then + ui.update() + end +end + +-------------------------------------------------------------------------------- +core.event_handler = function(event) + if ui.handle_events(event) then + ui.update() + return + end + + if event == "Refresh" then + ui.update() + return + end +end |