forked from Mirrorlandia_minetest/minetest
c3984569c0
Fix crash on using cursor keys in client menu without selected server Add support for non fixed size tabviews
274 lines
7.9 KiB
Lua
274 lines
7.9 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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--------------------------------------------------------------------------------
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-- A tabview implementation --
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-- Usage: --
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-- tabview.create: returns initialized tabview raw element --
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-- element.add(tab): add a tab declaration --
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-- element.handle_buttons() --
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-- element.handle_events() --
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-- element.getFormspec() returns formspec of tabview --
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--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
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local function add_tab(self,tab)
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assert(tab.size == nil or (type(tab.size) == table and
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tab.size.x ~= nil and tab.size.y ~= nil))
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assert(tab.cbf_formspec ~= nil and type(tab.cbf_formspec) == "function")
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assert(tab.cbf_button_handler == nil or
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type(tab.cbf_button_handler) == "function")
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assert(tab.cbf_events == nil or type(tab.cbf_events) == "function")
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local newtab = {
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name = tab.name,
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caption = tab.caption,
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button_handler = tab.cbf_button_handler,
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event_handler = tab.cbf_events,
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get_formspec = tab.cbf_formspec,
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tabsize = tab.tabsize,
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on_change = tab.on_change,
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tabdata = {},
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}
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table.insert(self.tablist,newtab)
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if self.last_tab_index == #self.tablist then
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self.current_tab = tab.name
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if tab.on_activate ~= nil then
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tab.on_activate(nil,tab.name)
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end
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end
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end
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--------------------------------------------------------------------------------
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local function get_formspec(self)
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local formspec = ""
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if not self.hidden and (self.parent == nil or not self.parent.hidden) then
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if self.parent == nil then
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local tsize = self.tablist[self.last_tab_index].tabsize or
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{width=self.width, height=self.height}
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formspec = formspec ..
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string.format("size[%f,%f,%s]",tsize.width,tsize.height,
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dump(self.fixed_size))
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end
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formspec = formspec .. self:tab_header()
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formspec = formspec ..
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self.tablist[self.last_tab_index].get_formspec(
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self,
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self.tablist[self.last_tab_index].name,
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self.tablist[self.last_tab_index].tabdata,
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self.tablist[self.last_tab_index].tabsize
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)
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end
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return formspec
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end
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--------------------------------------------------------------------------------
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local function handle_buttons(self,fields)
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if self.hidden then
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return false
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end
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if self:handle_tab_buttons(fields) then
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return true
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end
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if self.glb_btn_handler ~= nil and
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self.glb_btn_handler(self,fields) then
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return true
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end
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if self.tablist[self.last_tab_index].button_handler ~= nil then
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return
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self.tablist[self.last_tab_index].button_handler(
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self,
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fields,
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self.tablist[self.last_tab_index].name,
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self.tablist[self.last_tab_index].tabdata
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)
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end
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return false
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end
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--------------------------------------------------------------------------------
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local function handle_events(self,event)
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if self.hidden then
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return false
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end
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if self.glb_evt_handler ~= nil and
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self.glb_evt_handler(self,event) then
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return true
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end
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if self.tablist[self.last_tab_index].evt_handler ~= nil then
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return
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self.tablist[self.last_tab_index].evt_handler(
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self,
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event,
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self.tablist[self.last_tab_index].name,
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self.tablist[self.last_tab_index].tabdata
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)
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end
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return false
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end
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--------------------------------------------------------------------------------
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local function tab_header(self)
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local toadd = ""
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for i=1,#self.tablist,1 do
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if toadd ~= "" then
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toadd = toadd .. ","
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end
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toadd = toadd .. self.tablist[i].caption
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end
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return string.format("tabheader[%f,%f;%s;%s;%i;true;false]",
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self.header_x, self.header_y, self.name, toadd, self.last_tab_index);
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end
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--------------------------------------------------------------------------------
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local function switch_to_tab(self, index)
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--first call on_change for tab to leave
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if self.tablist[self.last_tab_index].on_change ~= nil then
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self.tablist[self.last_tab_index].on_change("LEAVE",
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self.current_tab, self.tablist[index].name)
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end
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--update tabview data
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self.last_tab_index = index
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local old_tab = self.current_tab
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self.current_tab = self.tablist[index].name
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if (self.autosave_tab) then
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core.setting_set(self.name .. "_LAST",self.current_tab)
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end
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-- call for tab to enter
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if self.tablist[index].on_change ~= nil then
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self.tablist[index].on_change("ENTER",
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old_tab,self.current_tab)
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end
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end
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--------------------------------------------------------------------------------
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local function handle_tab_buttons(self,fields)
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--save tab selection to config file
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if fields[self.name] then
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local index = tonumber(fields[self.name])
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switch_to_tab(self, index)
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return true
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end
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return false
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end
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--------------------------------------------------------------------------------
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local function set_tab_by_name(self, name)
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for i=1,#self.tablist,1 do
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if self.tablist[i].name == name then
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switch_to_tab(self, i)
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return true
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end
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end
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return false
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end
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--------------------------------------------------------------------------------
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local function hide_tabview(self)
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self.hidden=true
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--call on_change as we're not gonna show self tab any longer
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if self.tablist[self.last_tab_index].on_change ~= nil then
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self.tablist[self.last_tab_index].on_change("LEAVE",
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self.current_tab, nil)
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end
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end
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--------------------------------------------------------------------------------
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local function show_tabview(self)
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self.hidden=false
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-- call for tab to enter
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if self.tablist[self.last_tab_index].on_change ~= nil then
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self.tablist[self.last_tab_index].on_change("ENTER",
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nil,self.current_tab)
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end
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end
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local tabview_metatable = {
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add = add_tab,
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handle_buttons = handle_buttons,
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handle_events = handle_events,
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get_formspec = get_formspec,
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show = show_tabview,
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hide = hide_tabview,
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delete = function(self) ui.delete(self) end,
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set_parent = function(self,parent) self.parent = parent end,
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set_autosave_tab =
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function(self,value) self.autosave_tab = value end,
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set_tab = set_tab_by_name,
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set_global_button_handler =
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function(self,handler) self.glb_btn_handler = handler end,
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set_global_event_handler =
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function(self,handler) self.glb_evt_handler = handler end,
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set_fixed_size =
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function(self,state) self.fixed_size = state end,
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tab_header = tab_header,
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handle_tab_buttons = handle_tab_buttons
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}
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tabview_metatable.__index = tabview_metatable
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--------------------------------------------------------------------------------
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function tabview_create(name, size, tabheaderpos)
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local self = {}
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self.name = name
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self.type = "toplevel"
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self.width = size.x
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self.height = size.y
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self.header_x = tabheaderpos.x
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self.header_y = tabheaderpos.y
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setmetatable(self, tabview_metatable)
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self.fixed_size = true
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self.hidden = true
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self.current_tab = nil
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self.last_tab_index = 1
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self.tablist = {}
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self.autosave_tab = false
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ui.add(self)
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return self
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end
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