menu.h

#ifndef _MENU_H
#define _MENU_H

#include <Arduino.h>

typedef struct {
  char name[21];
  byte value;
} menuItem;


class menu
{
public:
	/* Constructor: pagesize (rows), maximum menu item count */
	menu(byte, byte);

	/* Frees menuItems memory */
	~menu(void);

	/* Adds or updates a menu item (based on unique value) */
	void setItem(char[], byte);
	void setItem_P(const char *, byte);

	/* Appends text to an existing menu item */
	void appendItem(char[], byte);
	void appendItem_P(const char *, byte);

	/* Set selected by specifying index */
	void setSelected(byte);

	/* Select by menu item value */
	void setSelectedByValue(byte);

	/* Get selected menu item index */
	byte getSelected(void);

	/* Update _topItem based on selection and pageSize */
	boolean refreshDisp(void);

	/* Get specified row's menu item text based on _topItem and _pageSize */
	void getVisibleRow(byte, char[]);

	/* Get menu item text for currently selected item */
	char* getSelectedRow(char[]);

	/* Get the value for the currently selected menu item */
	byte getValue(void);

	/* Get the cursor position based on current selection, _topItem and _pageSize */
	byte getCursor(void);

	/* Get total number of defined menu items */
	byte getItemCount(void);

	/* Get menu item index based on specified menu item value */
	byte getIndexByValue(byte);
private:
	byte 	_pageSize,
		_maxOpts,
		_itemCount,
		_selected,
		_topItem;
			
	menuItem *_menuItems;
};

#endif