/*Copyright (C) 1998 Pyrosoft Inc. (www.pyrosoftgames.com), Matthew Bogue
 
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
(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 General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#ifndef __UI_VERTICAL_SCROLL_BOX_HPP__
#define __UI_VERTICAL_SCROLL_BOX_HPP__


#include "Container.hpp"

#include "Button.hpp"

#include <vector>

namespace UI{

    class BoxElement;

    class VerticalScrollBox : public Component, public ButtonCallback{
    public:
        VerticalScrollBox(iRect area);
        ~VerticalScrollBox(void);
        void draw(Painter & painter);
    
        void buttonPressed(MouseEventParameter & event, Button * source);
        
        void mouseEntered(MouseEventParameter param);
        void mouseExited(MouseEventParameter param);
        void mousePressed(MouseEventParameter param);
        void mouseReleased(MouseEventParameter param);

    private:
        class VerticalViewPort : public Container{
        public:
            VerticalViewPort(iRect area):Container(area){}
            int getLastElementIndex(void){return components.size() - 1;}
            int getVerticalSize(void);
            void draw(Painter & painter);


            void addVerticalOffset(int y){
                offset.y += y;
            }

            int getVerticalOffset(void) const{
                return offset.y;
            }
        private:
            iXY offset;
        };
   
        Button * scrollDown;
        Button * scrollUp;
        VerticalViewPort * viewPort;

   

        int addBoxElement(BoxElement * box);
        int getBoxWidth(void){
            return area.max.x - area.min.x - 10;
        }
        friend class BoxElement;
    };

    class BoxElement : public Container{
    public:
        BoxElement(VerticalScrollBox * parent, int height):Container(iRect(0,0,parent->getBoxWidth(), height)){
            this->parent = parent;
            position = parent->addBoxElement(this);

        }

        void draw(Painter& painter);
        void drawFrame(Painter& ){};

    private:
        VerticalScrollBox * parent;
        int position;
    };

}

#endif