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/*
* The ManaPlus Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011-2014 The ManaPlus Developers
*
* This file is part of The ManaPlus Client.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GUI_FOCUSHANDLER_H
#define GUI_FOCUSHANDLER_H
#include "gui/base/focushandler.hpp"
#include <list>
#include "localconsts.h"
/**
* The focus handler. This focus handler does exactly the same as the Guichan
* focus handler, but keeps a stack of modal widgets to be able to handle
* multiple modal focus requests.
*/
class FocusHandler final : public gcn::FocusHandler
{
public:
FocusHandler() :
mModalStack()
{ }
A_DELETE_COPY(FocusHandler)
/**
* Sets modal focus to a widget. When there is already a modal widget
* then that widget loses modal focus and will regain it after this
* widget releases his modal focus.
*/
void requestModalFocus(gcn::Widget *widget) override final;
/**
* Releases modal focus of a widget. When this widget had modal focus
* and there are other widgets that had also requested modal focus,
* then modal focus will be transfered to the last of those.
*/
void releaseModalFocus(gcn::Widget *widget) override final;
/**
* Removes a widget from the focus handler. Also makes sure no dangling
* pointers remain in modal focus stack.
*/
void remove(gcn::Widget *widget) override final;
/**
* Overloaded to allow windows to move to the top when one of their
* widgets is tabbed to when tabbing through focusable elements.
*/
void tabNext() override final;
void tabPrevious() override final;
void distributeFocusGainedEvent(const Event &focusEvent)
override final;
private:
/**
* Checks to see if the widget tabbed to is in a window, and if it is,
* it requests the window be moved to the top.
*/
void checkForWindow() const;
/**
* Stack of widgets that have requested modal forcus.
*/
std::list<gcn::Widget*> mModalStack;
};
#endif // GUI_FOCUSHANDLER_H
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