ZList.h

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// -*- C++ -*-
/* GG is a GUI for SDL and OpenGL.
   Copyright (C) 2003 T. Zachary Laine

   This library 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 library 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 library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA

   If you do not wish to comply with the terms of the LGPL please
   contact the author as other terms are available for a fee.
    
   Zach Laine
   whatwasthataddress@hotmail.com */

#ifndef _GG_ZList_h_
#define _GG_ZList_h_

#include <GG/Base.h>

#include <list>
#include <set>


namespace GG {
    class Wnd;

class GG_API ZList : public std::list<Wnd*>
{
public: 

    Wnd* Pick(const Pt& pt, Wnd* modal, Wnd* ignore = 0) const;
 

    void Add(Wnd* wnd);
    bool Remove(Wnd* wnd);   
    bool MoveUp(Wnd* wnd);   
    bool MoveDown(Wnd* wnd); 


private:
    Wnd*     PickWithinWindow(const Pt& pt, Wnd* wnd, Wnd* ignore) const; 
    bool     NeedsRealignment() const;     
    void     Realign();                    
    iterator FirstNonOnTop();              

    std::set<Wnd*> m_contents; 
};

} // namespace GG

#endif // _GG_ZList_h_

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