MinecraftConsoles/Minecraft.Client/Common/UI/IUIScene_TradingMenu.h

#pragma once
#include "..\Minecraft.World\MerchantMenu.h"

class MerchantRecipe;

class IUIScene_TradingMenu
{
protected:
	MerchantMenu *m_menu;
	shared_ptr<Merchant> m_merchant;
	vector< pair<MerchantRecipe *,int> > m_activeOffers;

	int m_validOffersCount;
	int m_selectedSlot;
	int m_offersStartIndex;
	bool m_bHasUpdatedOnce;

	eTutorial_State m_previousTutorialState;

	static const int DISPLAY_TRADES_COUNT = 7;

	static const int BUY_A = MerchantMenu::USE_ROW_SLOT_END;
	static const int BUY_B = BUY_A + 1;
	static const int TRADES_START = BUY_B + 1;

protected:
	IUIScene_TradingMenu();

	bool handleKeyDown(int iPad, int iAction, bool bRepeat);
	void handleTick();

	virtual void showScrollRightArrow(bool show) = 0;
	virtual void showScrollLeftArrow(bool show) = 0;
	virtual void moveSelector(bool right) = 0;
	virtual void setRequest1Name(const wstring &name) = 0;
	virtual void setRequest2Name(const wstring &name) = 0;
	virtual void setTitle(const wstring &name) = 0;

	virtual void setRequest1RedBox(bool show) = 0;
	virtual void setRequest2RedBox(bool show) = 0;
	virtual void setTradeRedBox(int index, bool show) = 0;
	
	virtual void setOfferDescription(vector<HtmlString> *description) = 0;

	virtual void setRequest1Item(shared_ptr<ItemInstance> item);
	virtual void setRequest2Item(shared_ptr<ItemInstance> item);
	virtual void setTradeItem(int index, shared_ptr<ItemInstance> item);

	void updateDisplay();
	void HandleInventoryUpdated();

private:
	bool canMake(MerchantRecipe *recipe);

	vector<HtmlString> *GetItemDescription(shared_ptr<ItemInstance> item);

public:
	shared_ptr<Merchant> getMerchant();

	virtual int getPad() = 0;
};