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/* $Id$ */

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#ifndef NEWS_H

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#define NEWS_H

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struct NewsItem {

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	StringID string_id;

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	uint16 duration;

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	uint16 date;

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	byte flags;

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	byte display_mode;

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	byte type;

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	byte callback;

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	TileIndex data_a;

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	TileIndex data_b;

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	uint32 params[10];

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	/* The validation functions for news items get called immediately

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	 * before the news are supposed to be shown. If this funcion returns

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	 * false, the news item won't be displayed. */

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	bool (*isValid) ( uint data_a, uint data_b );

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};

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typedef bool ValidationProc ( uint data_a, uint data_b );

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typedef void DrawNewsCallbackProc(Window *w);

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typedef StringID GetNewsStringCallbackProc(const NewsItem *ni);

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#define NEWS_FLAGS(mode,flag,type,cb) ((cb)<<24 | (type)<<16 | (flag)<<8 | (mode))

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void AddNewsItem(StringID string, uint32 flags, uint data_a, uint data_b);

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void AddValidatedNewsItem(StringID string, uint32 flags, uint data_a, uint data_b, ValidationProc *validation);

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void NewsLoop(void);

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void DrawNewsBorder(const Window *w);

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void InitNewsItemStructs(void);

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VARDEF NewsItem _statusbar_news_item;

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enum {

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	NT_ARRIVAL_PLAYER = 0,

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	NT_ARRIVAL_OTHER = 1,

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	NT_ACCIDENT = 2,

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	NT_COMPANY_INFO = 3,

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	NT_ECONOMY = 4,

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	NT_ADVICE = 5,

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	NT_NEW_VEHICLES = 6,

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	NT_ACCEPTANCE = 7,

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	NT_SUBSIDIES = 8,

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	NT_GENERAL = 9,

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};

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enum NewsMode {

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	NM_SMALL = 0,

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	NM_NORMAL = 1,

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	NM_THIN = 2,

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	NM_CALLBACK = 3,

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};

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enum NewsFlags {

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	NF_VIEWPORT = 1,

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	NF_TILE = 4,

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	NF_VEHICLE = 8,

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	NF_FORCE_BIG = 0x10,

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	NF_NOEXPIRE = 0x20,

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	NF_INCOLOR = 0x40,

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};

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enum {

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	DNC_TRAINAVAIL = 0,

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	DNC_ROADAVAIL = 1,

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	DNC_SHIPAVAIL = 2,

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	DNC_AIRCRAFTAVAIL = 3,

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	DNC_BANKRUPCY = 4,

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};

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#endif /* NEWS_H */