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mirror of https://github.com/moparisthebest/minetest synced 2024-12-23 08:08:47 -05:00
minetest/builtin/fstk/tabview.lua
sapier c3984569c0 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
2014-05-16 22:57:14 +02:00

274 lines
7.9 KiB
Lua

--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.
--------------------------------------------------------------------------------
-- A tabview implementation --
-- Usage: --
-- tabview.create: returns initialized tabview raw element --
-- element.add(tab): add a tab declaration --
-- element.handle_buttons() --
-- element.handle_events() --
-- element.getFormspec() returns formspec of tabview --
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
local function add_tab(self,tab)
assert(tab.size == nil or (type(tab.size) == table and
tab.size.x ~= nil and tab.size.y ~= nil))
assert(tab.cbf_formspec ~= nil and type(tab.cbf_formspec) == "function")
assert(tab.cbf_button_handler == nil or
type(tab.cbf_button_handler) == "function")
assert(tab.cbf_events == nil or type(tab.cbf_events) == "function")
local newtab = {
name = tab.name,
caption = tab.caption,
button_handler = tab.cbf_button_handler,
event_handler = tab.cbf_events,
get_formspec = tab.cbf_formspec,
tabsize = tab.tabsize,
on_change = tab.on_change,
tabdata = {},
}
table.insert(self.tablist,newtab)
if self.last_tab_index == #self.tablist then
self.current_tab = tab.name
if tab.on_activate ~= nil then
tab.on_activate(nil,tab.name)
end
end
end
--------------------------------------------------------------------------------
local function get_formspec(self)
local formspec = ""
if not self.hidden and (self.parent == nil or not self.parent.hidden) then
if self.parent == nil then
local tsize = self.tablist[self.last_tab_index].tabsize or
{width=self.width, height=self.height}
formspec = formspec ..
string.format("size[%f,%f,%s]",tsize.width,tsize.height,
dump(self.fixed_size))
end
formspec = formspec .. self:tab_header()
formspec = formspec ..
self.tablist[self.last_tab_index].get_formspec(
self,
self.tablist[self.last_tab_index].name,
self.tablist[self.last_tab_index].tabdata,
self.tablist[self.last_tab_index].tabsize
)
end
return formspec
end
--------------------------------------------------------------------------------
local function handle_buttons(self,fields)
if self.hidden then
return false
end
if self:handle_tab_buttons(fields) then
return true
end
if self.glb_btn_handler ~= nil and
self.glb_btn_handler(self,fields) then
return true
end
if self.tablist[self.last_tab_index].button_handler ~= nil then
return
self.tablist[self.last_tab_index].button_handler(
self,
fields,
self.tablist[self.last_tab_index].name,
self.tablist[self.last_tab_index].tabdata
)
end
return false
end
--------------------------------------------------------------------------------
local function handle_events(self,event)
if self.hidden then
return false
end
if self.glb_evt_handler ~= nil and
self.glb_evt_handler(self,event) then
return true
end
if self.tablist[self.last_tab_index].evt_handler ~= nil then
return
self.tablist[self.last_tab_index].evt_handler(
self,
event,
self.tablist[self.last_tab_index].name,
self.tablist[self.last_tab_index].tabdata
)
end
return false
end
--------------------------------------------------------------------------------
local function tab_header(self)
local toadd = ""
for i=1,#self.tablist,1 do
if toadd ~= "" then
toadd = toadd .. ","
end
toadd = toadd .. self.tablist[i].caption
end
return string.format("tabheader[%f,%f;%s;%s;%i;true;false]",
self.header_x, self.header_y, self.name, toadd, self.last_tab_index);
end
--------------------------------------------------------------------------------
local function switch_to_tab(self, index)
--first call on_change for tab to leave
if self.tablist[self.last_tab_index].on_change ~= nil then
self.tablist[self.last_tab_index].on_change("LEAVE",
self.current_tab, self.tablist[index].name)
end
--update tabview data
self.last_tab_index = index
local old_tab = self.current_tab
self.current_tab = self.tablist[index].name
if (self.autosave_tab) then
core.setting_set(self.name .. "_LAST",self.current_tab)
end
-- call for tab to enter
if self.tablist[index].on_change ~= nil then
self.tablist[index].on_change("ENTER",
old_tab,self.current_tab)
end
end
--------------------------------------------------------------------------------
local function handle_tab_buttons(self,fields)
--save tab selection to config file
if fields[self.name] then
local index = tonumber(fields[self.name])
switch_to_tab(self, index)
return true
end
return false
end
--------------------------------------------------------------------------------
local function set_tab_by_name(self, name)
for i=1,#self.tablist,1 do
if self.tablist[i].name == name then
switch_to_tab(self, i)
return true
end
end
return false
end
--------------------------------------------------------------------------------
local function hide_tabview(self)
self.hidden=true
--call on_change as we're not gonna show self tab any longer
if self.tablist[self.last_tab_index].on_change ~= nil then
self.tablist[self.last_tab_index].on_change("LEAVE",
self.current_tab, nil)
end
end
--------------------------------------------------------------------------------
local function show_tabview(self)
self.hidden=false
-- call for tab to enter
if self.tablist[self.last_tab_index].on_change ~= nil then
self.tablist[self.last_tab_index].on_change("ENTER",
nil,self.current_tab)
end
end
local tabview_metatable = {
add = add_tab,
handle_buttons = handle_buttons,
handle_events = handle_events,
get_formspec = get_formspec,
show = show_tabview,
hide = hide_tabview,
delete = function(self) ui.delete(self) end,
set_parent = function(self,parent) self.parent = parent end,
set_autosave_tab =
function(self,value) self.autosave_tab = value end,
set_tab = set_tab_by_name,
set_global_button_handler =
function(self,handler) self.glb_btn_handler = handler end,
set_global_event_handler =
function(self,handler) self.glb_evt_handler = handler end,
set_fixed_size =
function(self,state) self.fixed_size = state end,
tab_header = tab_header,
handle_tab_buttons = handle_tab_buttons
}
tabview_metatable.__index = tabview_metatable
--------------------------------------------------------------------------------
function tabview_create(name, size, tabheaderpos)
local self = {}
self.name = name
self.type = "toplevel"
self.width = size.x
self.height = size.y
self.header_x = tabheaderpos.x
self.header_y = tabheaderpos.y
setmetatable(self, tabview_metatable)
self.fixed_size = true
self.hidden = true
self.current_tab = nil
self.last_tab_index = 1
self.tablist = {}
self.autosave_tab = false
ui.add(self)
return self
end