#ifndef INPUTSCROLLINGMENU_H
#define INPUTSCROLLINGMENU_H

#include <allegro.h>

#include "ValuedGuiElement.h"

class InputScrollingMenu : public ValuedGuiElement<int> {
      int x, y;
      int displayLength;
      int scrollDiff, scrollStep;
      
      int length;
      const char * const *command;
      int commandMaxCharCount;
      
      void (*onScroll)();
      
      int value;
      
      int scrollPosition;
      
      int oldMouseB;
      
      public:
      InputScrollingMenu(BITMAP *desiredCanvas, int desiredX, int desiredY,
        int desiredDisplayLength, int desiredScrollDiff, int desiredScrollStep,
        int desiredLength, const char * const *desiredCommand,
        int desiredCommandMaxCharCount, bool desiredBlocking,
        void (*desiredOnScroll)() = NULL, int desiredSelection = 0,
        int desiredScrollPosition = 0, bool desiredActive = false) :
        ValuedGuiElement<int>(desiredCanvas, desiredBlocking, desiredActive),
        x(desiredX), y(desiredY), displayLength(desiredDisplayLength),
        scrollDiff(desiredScrollDiff), scrollStep(desiredScrollStep),
        length(desiredLength), command(desiredCommand),
        commandMaxCharCount(desiredCommandMaxCharCount),
        onScroll(desiredOnScroll), value(desiredSelection),
        scrollPosition(desiredScrollPosition), oldMouseB(0x0) {}
      
      int getScrollPosition();
      
      void setCommand(int desiredLength, const char * const *desiredCommand);
      void setScrollPosition(int desiredScrollPosition);
      
      void previous();
      void next();
      
      void scrollUp();
      void scrollDown();
      
      int getValue();
      void setValue(int desiredValue);
      
      bool acknowledgeKeyStroke(int keyStroke);
      bool acknowledgeMouse();
      
      void shift(int xOffset, int yOffset);
      bool within(int xTarget, int yTarget);
      void draw();
      void erase();
};

#endif