// Menu List
//
// Douglas Thrift
//
// $Id$

#ifndef _MenuList_hpp_
#define _MenuList_hpp_

#include <vector>

#include <Audacious.hpp>

#include "Display.hpp"

struct MenuList
{
protected:
	static MenuList *previous;

private:
	MenuList *parent;
	Display &display;

	struct State
	{
		size_t item, cursor, top, bottom;

		State() : item(0), cursor(0), top(0), bottom(4) {}

		bool operator !=(const State &state) const
		{
			return top != state.top;
		}
	} state, old;

public:
	struct MenuItem
	{
	protected:
		MenuList *list;

	public:
		MenuItem(MenuList *list);

		virtual MenuList *Select() = 0;
		virtual operator std::string() const = 0;
	};

	struct BoolItem
	{
		virtual operator bool() const = 0;
	};

	struct SubItem {};

protected:
	std::vector<MenuItem *> list;

public:
	MenuList(MenuList *parent, Display &display, size_t size = 0);
	virtual ~MenuList();

	MenuList *Enter();
	MenuList *Left();
	MenuList *Right();
	void Render();
	MenuList &operator ++();
	MenuList &operator --();
};

struct TopList : public MenuList
{
	class AppendItem : public MenuItem, public BoolItem
	{
		bool &append;

	public:
		AppendItem(MenuList *list, bool &append);

		virtual MenuList *Select();
		virtual operator std::string() const;
		virtual operator bool() const;
	};

	class ShuffleItem : public MenuItem, public BoolItem
	{
		Audacious::Audacious &audacious;

	public:
		ShuffleItem(MenuList *list, Audacious::Audacious &audacious);

		virtual MenuList *Select();
		virtual operator std::string() const;
		virtual operator bool() const;
	};

	TopList(Audacious::Audacious &audacious, Display &display, bool &append);
};

struct ArtistList : public MenuList
{
	/*class AllItem : public MenuItem
	{
	};

	class ArtistItem : public MenuItem
	{
	};*/

	ArtistList(Audacious::Audacious &audacious, Display &display);
};

struct AlbumList : public MenuList
{
	/*class AllItem : public MenuItem
	{
	};

	class AlbumItem : public MenuItem
	{
	};*/

	AlbumList(Audacious::Audacious &audacious, Display &display);
};

struct SongList : public MenuList
{
	/*class AllItem : public MenuItem
	{
	};

	class SongItem : public MenuItem
	{
	};*/

	SongList(Audacious::Audacious &audacious, Display &display);
};

#endif//_MenuList_hpp_