builtin/fstk/tabview.lua


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/*
Part of Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
Copyright (C) 2013 Ciaran Gultnieks <ciaran@ciarang.com>

Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#ifndef GUIPASSWORDCHANGE_HEADER
#define GUIPASSWORDCHANGE_HEADER

#include "irrlichttypes_extrabloated.h"
#include "modalMenu.h"
#include "client.h"
#include <string>

class GUIPasswordChange : public GUIModalMenu
{
public:
	GUIPasswordChange(gui::IGUIEnvironment* env,
			gui::IGUIElement* parent, s32 id,
			IMenuManager *menumgr,
			Client* client);
	~GUIPasswordChange();
	
	void removeChildren();
	/*
		Remove and re-add (or reposition) stuff
	*/
	void regenerateGui(v2u32 screensize);

	void drawMenu();

	bool acceptInput();

	bool OnEvent(const SEvent& event);
	
private:
	Client* m_client;

};

#endif
--Minetest
--Copyright (C) 2014 sapier
--
--This 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.
--
--This 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 this 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 = {},
	}

	self.tablist[#self.tablist + 1] = 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