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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

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.
*/

#ifndef MODALMENU_HEADER
#define MODALMENU_HEADER

#include "irrlichttypes_extrabloated.h"

class GUIModalMenu;

class IMenuManager
{
public:
	// A GUIModalMenu calls these when this class is passed as a parameter
	virtual void createdMenu(GUIModalMenu *menu) = 0;
	virtual void deletingMenu(GUIModalMenu *menu) = 0;
};

/*
	Remember to drop() the menu after creating, so that it can
	remove itself when it wants to.
*/

class GUIModalMenu : public gui::IGUIElement
{
public:
	GUIModalMenu(gui::IGUIEnvironment* env,
			gui::IGUIElement* parent, s32 id,
			IMenuManager *menumgr):
		IGUIElement(gui::EGUIET_ELEMENT, env, parent, id,
				core::rect<s32>(0,0,100,100))
	{
		//m_force_regenerate_gui = false;
		
		m_menumgr = menumgr;
		m_allow_focus_removal = false;
		m_screensize_old = v2u32(0,0);

		setVisible(true);
		Environment->setFocus(this);
		m_menumgr->createdMenu(this);
	}
	virtual ~GUIModalMenu()
	{
		m_menumgr->deletingMenu(this);
	}

	void allowFocusRemoval(bool allow)
	{
		m_allow_focus_removal = allow;
	}

	bool canTakeFocus(gui::IGUIElement *e)
	{
		return (e && (e == this || isMyChild(e))) || m_allow_focus_removal;
	}

	void draw()
	{
		if(!IsVisible)
			return;
			
		video::IVideoDriver* driver = Environment->getVideoDriver();
		v2u32 screensize = driver->getScreenSize();