mainmenumanager.h

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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.
*/
 
#pragma once
 
/*
    All kinds of stuff that needs to be exposed from main.cpp
*/
#include "modalMenu.h"
#include <cassert>
#include <list>
 
class IGameCallback
{
public:
    virtual void exitToOS() = 0;
    virtual void keyConfig() = 0;
    virtual void disconnect() = 0;
    virtual void changePassword() = 0;
    virtual void changeVolume() = 0;
 
    virtual void signalKeyConfigChange() = 0;
};
 
extern gui::IGUIEnvironment *guienv;
extern gui::IGUIStaticText *guiroot;
 
// Handler for the modal menus
 
class MainMenuManager : public IMenuManager
{
public:
    virtual void createdMenu(gui::IGUIElement *menu)
    {
#ifndef NDEBUG
        for (gui::IGUIElement *i : m_stack) {
            assert(i != menu);
        }
#endif
 
        if(!m_stack.empty())
            m_stack.back()->setVisible(false);
        m_stack.push_back(menu);
    }
 
    virtual void deletingMenu(gui::IGUIElement *menu)
    {
        // Remove all entries if there are duplicates
        m_stack.remove(menu);
 
        /*core::list<GUIModalMenu*>::Iterator i = m_stack.getLast();
        assert(*i == menu);
        m_stack.erase(i);*/
 
        if(!m_stack.empty())
            m_stack.back()->setVisible(true);
    }
 
    // Returns true to prevent further processing
    virtual bool preprocessEvent(const SEvent& event)
    {
        if (m_stack.empty())
            return false;
        GUIModalMenu *mm = dynamic_cast<GUIModalMenu*>(m_stack.back());
        return mm && mm->preprocessEvent(event);
    }
 
    u32 menuCount()
    {
        return m_stack.size();
    }
 
    bool pausesGame()
    {
        for (gui::IGUIElement *i : m_stack) {
            GUIModalMenu *mm = dynamic_cast<GUIModalMenu*>(i);
            if (mm && mm->pausesGame())
                return true;
        }
        return false;
    }
 
    std::list<gui::IGUIElement*> m_stack;
};
 
extern MainMenuManager g_menumgr;
 
extern bool isMenuActive();
 
class MainGameCallback : public IGameCallback
{
public:
    MainGameCallback() = default;
    virtual ~MainGameCallback() = default;
 
    virtual void exitToOS()
    {
        shutdown_requested = true;
    }
 
    virtual void disconnect()
    {
        disconnect_requested = true;
    }
 
    virtual void changePassword()
    {
        changepassword_requested = true;
    }
 
    virtual void changeVolume()
    {
        changevolume_requested = true;
    }
 
    virtual void keyConfig()
    {
        keyconfig_requested = true;
    }
 
    virtual void signalKeyConfigChange()
    {
        keyconfig_changed = true;
    }
 
 
    bool disconnect_requested = false;
    bool changepassword_requested = false;
    bool changevolume_requested = false;
    bool keyconfig_requested = false;
    bool shutdown_requested = false;
 
    bool keyconfig_changed = false;
};
 
extern MainGameCallback *g_gamecallback;