/**

 * vim: set ts=4 :

 * ===============================================================

 * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.

 * ===============================================================

 *

 *  This file is part of the SourceMod/SourcePawn SDK.  This file may only be used 

 * or modified under the Terms and Conditions of its License Agreement, which is found 

 * in LICENSE.txt.  The Terms and Conditions for making SourceMod extensions/plugins 

 * may change at any time.  To view the latest information, see:

 *   http://www.sourcemod.net/license.php

 *

 * Version: $Id$

 */

#if defined _menus_included

 #endinput

#endif

#define _menus_included

/**

 * Low-level drawing style of the menu.

 */

enum MenuStyle

{

	MenuStyle_Default = 0,		/**< The "default" menu style for the mod */

	MenuStyle_Valve = 1,		/**< The Valve provided menu style (Used on HL2DM) */

	MenuStyle_Radio = 2,		/**< The simpler menu style commonly used on CS:S */

};

/**

 * Different actions for the menu "pump" callback

 */

enum MenuAction

{

	MenuAction_Start = (1<<0),		/**< A menu has been started (nothing passed) */

	MenuAction_Display = (1<<1),	/**< A menu is about to be displayed (param1=client, param2=MenuPanel Handle) */

	MenuAction_Select = (1<<2),		/**< An item was selected (param1=client, param2=item) */

	MenuAction_Cancel = (1<<3),		/**< The menu was cancelled (param1=client, param2=reason) */

	MenuAction_End = (1<<4),		/**< A menu's display/selection cycle is complete (nothing passed). */

	MenuAction_VoteEnd = (1<<5),	/**< (VOTE ONLY): A vote sequence has ended (param1=chosen item) */

};

/** Default menu actions */

#define MENU_ACTIONS_DEFAULT	MenuAction_Select|MenuAction_Cancel|MenuAction_End

/** All menu actions */

#define MENU_ACTIONS_ALL		-1

#define MENU_NO_PAGINATION		0		/**< Menu should not be paginated (10 items max) */

#define MENU_TIME_FOREVER		0		/**< Menu should be displayed as long as possible */

#define ITEMDRAW_DEFAULT		(0)		/**< Item should be drawn normally */

#define ITEMDRAW_DISABLED		(1<<0)	/**< Item is drawn but not selectable */

#define ITEMDRAW_RAWLINE		(1<<1)	/**< Item should be a raw line, without a slot */

#define ITEMDRAW_NOTEXT			(1<<2)	/**< No text should be drawn */

#define ITEMDRAW_SPACER			(1<<3)	/**< Item should be drawn as a spacer, if possible */

#define ITEMDRAW_IGNORE	((1<<1)|(1<<2))	/**< Item should be completely ignored (rawline + notext) */

#define ITEMDRAW_CONTROL		(1<<4)	/**< Item is control text (back/next/exit) */

/**

 * Reasons a menu can be cancelled.

 */

enum

{

	MenuCancel_Disconnect = -1,			/**< Client dropped from the server */

	MenuCancel_Interrupt = -2,			/**< Client was interrupted with another menu */

	MenuCancel_Exit = -3,				/**< Client selected "exit" on a paginated menu */

	MenuCancel_NoDisplay = -4,			/**< Menu could not be displayed to the client */

};

/**

 * Describes a menu's source

 */

enum MenuSource

{

	MenuSource_None = 0,			/**< No menu is being displayed */	

	MenuSource_External = 1,		/**< External menu */

	MenuSource_Normal = 2,			/**< A basic menu is being displayed */

	MenuSource_RawPanel = 3,		/**< A display is active, but it is not tied to a menu */

};

/**

 * Called when a menu action is completed.

 *

 * @param menu				The menu being acted upon.

 * @param action			The action of the menu.

 * @param param1			First action parameter (usually the client).

 * @param param2			Second action parameter (usually the item).

 * @noreturn

 */

functag MenuHandler public(Handle:menu, MenuAction:action, param1, param2);

/**

 * Creates a new, empty menu using the default style.

 * 

 * @param handler			Function which will receive menu actions.

 * @param actions			Optionally set which actions to receive.  Select, 

 *							Cancel, and End will always be received regardless

 *							of whether they are set or not.  They are also

 *							the only default actions.

 * @return					A new menu Handle.

 */

native Handle:CreateMenu(MenuHandler:handler, MenuAction:actions=MENU_ACTIONS_DEFAULT);

/**

 * Displays a menu to a client.

 *

 * @param menu				Menu Handle.

 * @param client			Client index.

 * @param time				Maximum time to leave menu on the screen.

 * @return					True on success, false on failure.

 * @error					Invalid Handle or client not in game.

 */

native bool:DisplayMenu(Handle:menu, client, time);

/**

 * Appends a new item to the end of a menu.

 *

 * @param menu				Menu Handle.

 * @param info				Item information string.

 * @param display			Default item display string.

 * @param style				Drawing style flags.

 * @return					True on success, false on failure.

 * @error					Invalid Handle or item limit reached.

 */

native AddMenuItem(Handle:menu, 

					const String:info[], 

					const String:display[], 

					style=ITEMDRAW_DEFAULT);

/**

 * Inserts an item into the menu before a certain position; the new item will

 * be at the given position and all next items pushed forward.

 *

 * @param menu				Menu Handle.

 * @param position			Position, starting from 0.

 * @param info				Item information string.

 * @param display			Default item display string.

 * @param style				Drawing style flags.

 * @return					True on success, false on failure.

 * @error					Invalid Handle or menu position.

 */

native bool:InsertMenuItem(Handle:menu,

						position, 

						const String:info[], 

						const String:display[], 

						style=ITEMDRAW_DEFAULT);

/**

 * Removes an item from the menu.

 *

 * @param menu				Menu Handle.

 * @param position			Position, starting from 0.

 * @return					True on success, false on failure.

 * @error					Invalid Handle or menu position.

 */

native bool:RemoveMenuItem(Handle:menu, position);

/**

 * Removes all items from a menu.

 *

 * @param menu				Menu Handle.

 * @noreturn

 * @error					Invalid Handle or menu position.

 */

native RemoveAllMenuItems(Handle:menu);

/**

 * Retrieves information about a menu item.

 *

 * @param menu				Menu Handle.

 * @param position			Position, starting from 0.

 * @param infoBuf			Info buffer.

 * @param infoBufLen		Maximum length of the info buffer.

 * @param style				By-reference variable to store drawing flags.

 * @param dispBuf			Display buffer.

 * @param dispBufLen		Maximum length of the display buffer.

 * @return					True on success, false if position is invalid.

 * @error					Invalid Handle.

 */

native bool:GetMenuItem(Handle:menu, position, String:infoBuf[], infoBufLen, &style=0, String:dispBuf[]="", dispBufLen=0);

/**

 * Returns the number of items in a menu.

 *

 * @param menu				Menu Handle.

 * @return					Number of items in the menu.

 * @error					Invalid Handle.

 */

native GetMenuItemCount(Handle:menu);

/**

 * Sets whether the menu should be paginated or not.

 *

 * @param menu				Handle to the menu.

 * @param itemsPerPage		Number of items per page, or MENU_NO_PAGINATION.

 * @return					True on success, false if pagination is too high or low.

 * @error					Invalid Handle.

 */

native bool:SetMenuPagination(Handle:menu, itemsPerPage);

/**

 * Returns a menu's pagination setting.

 *

 * @param menu				Handle to the menu.

 * @return					Pagination setting.

 * @error					Invalid Handle.

 */

native GetMenuPagination(Handle:menu);

/**

 * Returns a menu's MenuStyle Handle.  The Handle

 * is global and cannot be freed.

 *

 * @param menu				Handle to the menu.

 * @return 					Handle to the menu's draw style.

 * @error					Invalid Handle.

 */

native Handle:GetMenuStyle(Handle:menu);

/**

 * Sets the menu's default title/instruction message.

 *

 * @param menu				Menu Handle.

 * @param fmt				Message string format

 * @param ...				Message string arguments.

 * @noreturn

 * @error					Invalid Handle.

 */

native SetMenuTitle(Handle:menu, const String:fmt[], any:...);

/**

 * Creates a raw MenuPanel based off the menu's style.

 * The Handle must be freed with CloseHandle().

 *

 * @return					A new MenuPanel Handle.

 * @error					Invalid Handle.

 */

native Handle:CreatePanelFromMenu(Handle:menu);

/**

 * Returns whether or not the menu has an exit button.

 * By default, menus have an exit button.

 *

 * @param menu				Menu Handle.

 * @return 					True if the menu has an exit button; false otherwise.

 * @error					Invalid Handle.

 */

native bool:GetMenuExitButton(Handle:menu);

/**

 * Sets whether or not the menu has an exit button.

 * By default, menus have an exit button.

 *

 * @param menu				Menu Handle.

 * @param button			True to enable the button, false to remove it.

 * @return 					True if allowed; false on failure.

 * @error					Invalid Handle.

 */

native bool:SetMenuExitButton(Handle:menu, bool:button);

/**

 * Cancels a menu from displaying on all clients.  While the

 * cancellation is in progress, this menu cannot be re-displayed

 * to any clients.

 *

 * The menu may still exist on the client's screen after this command.

 * This simply verifies that the menu is not being used anywhere.

 *

 * @param menu				Menu Handle.

 * @noreturn

 * @error					Invalid Handle.

 */

native CancelMenu(Handle:menu);

#if 0

/**

 * Broadcasts a menu to a list of clients.

 *

 * @param menu				Menu Handle.

 * @param handler			MenuHandler callback to receive actions.

 * @param players			Array of players to broadcast to.

 * @param numPlayers		Number of players in the array.

 * @param time				Maximum time to leave menu on the screen.

  * @return					Number of clients that broadcast will wait upon.

 * @error					Invalid Handle.

 */

native BroadcastMenu(Handle:menu, MenuHandler:handler, players[], numPlayers, time);

/**

 * Broadcasts a menu to a list of clients.  The most selected

 * item will be returned through MenuAction_End.  On a tie, a random

 * item will be returned.

 *

 * @param menu				Menu Handle.

 * @param handler			MenuHandler callback to receive actions.

 * @param players			Array of players to broadcast to.

 * @param numPlayers		Number of players in the array.

 * @param time				Maximum time to leave menu on the screen.

 * @return					Number of clients that vote will wait upon.

 * @error					Invalid Handle.

 */

native VoteMenu(Handle:menu, MenuHandler:handler, players[], numPlayers, time);

/**

 * Broadcasts a menu to all clients.

 *

 * @param menu				Menu Handle.

 * @param handler			MenuHandler callback to receive actions.

 * @param time				Maximum time to leave menu on the screen.

 * @return					Number of clients that broadcast will wait upon.

 * @error					Invalid Handle.

 */

stock BroadcastMenuToAll(Handle:menu, MenuHandler:handler, time)

{

	new num = GetMaxClients();

	new total;

	decl players[num];

	for (new i=1; i<=num; i++)

	{

		if (!IsClientConnected(i))

		{

			continue;

		}

		players[total++] = i;

	}

	return BroadcastMenu(menu, handler, players, total, time);

}

/**

 * Broadcasts a menu to all clients.  The most selected item will 

 * be returned through MenuAction_End.  On a tie, a random item 

 * will be returned.

 *

 * @param menu				Menu Handle.

 * @param handler			MenuHandler callback to receive actions.

 * @param time				Maximum time to leave menu on the screen.

 * @return					Number of clients that the vote will wait upon.

 * @error					Invalid Handle.

 */

stock VoteMenuToAll(Handle:menu, MenuHandler:handler, time)

{

	new num = GetMaxClients();

	new total;

	decl players[num];

	for (new i=1; i<=num; i++)

	{

		if (!IsClientConnected(i))

		{

			continue;

		}

		players[total++] = i;

	}

	return VoteMenu(menu, handler, players, total, time);

}

#endif

/**

 * Returns a style's global Handle.

 *

 * @param style			Menu Style.

 * @return				A Handle, or INVALID_HANDLE if not found or unusable.

 */

native Handle:GetMenuStyleHandle(MenuStyle:style);

/**

 * Creates a MenuPanel from a MenuStyle.  Panels are used for drawing raw 

 * menus without any extra helper functions.  The Handle must be closed

 * with CloseHandle().

 *

 * @param hStyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.

 * @return				A new MenuPanel Handle.

 * @error				Invalid Handle other than INVALID_HANDLE.

 */

native Handle:CreatePanel(Handle:hStyle=INVALID_HANDLE);

/** 

 * Creates a Menu from a MenuStyle.  The Handle must be closed with 

 * CloseHandle().

 *

 * @parma hStyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.

 * @param handler		Function which will receive menu actions.

 * @param actions		Optionally set which actions to receive.  Select, 

 *						Cancel, and End will always be received regardless

 *						of whether they are set or not.  They are also

 *						the only default actions.

 * @return				A new menu Handle.

 * @error				Invalid Handle other than INVALID_HANDLE.

 */

native Handle:CreateMenuEx(Handle:hStyle=INVALID_HANDLE, MenuHandler:handler, MenuAction:actions=MENU_ACTIONS_DEFAULT);

/**

 * Returns whether a client is viewing a menu.  If the menu source 

 * is MenuSource_Normal, a menu Handle will also be returned.

 *

 * @param client		Client index.

 * @param hStyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.

 * @return				A MenuSource value.

 * @error				Invalid Handle other than INVALID_HANDLE.

 */

native MenuSource:GetClientMenu(client, Handle:hStyle=INVALID_HANDLE);

/** 

 * Cancels a menu on a client.  This will only affect non-external menus.

 *

 * @param hstyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.

 * @param client		Client index.

 * @param autoIgnore	If true, no menus can be re-drawn on the client during

 *						the cancellation process.

 * @return				True if a menu was cancelled, false otherwise.

 */

native bool:CancelClientMenu(client, bool:autoIgnore=false, Handle:hStyle=INVALID_HANDLE);

/**

 * Returns a style's maximum items per page.

 *

 * @param hStyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.

 * @return				Maximum items per page.

 * @error				Invalid Handle other than INVALID_HANDLE.

 */

native GetMaxPageItems(Handle:hStyle=INVALID_HANDLE);

/**

 * Returns a MenuPanel's parent style.

 *

 * @param panel			A MenuPanel Handle.

 * @return				The MenuStyle Handle that created the panel.

 * @error				Invalid Handle.

 */

native Handle:GetPanelStyle(Handle:panel);

/**

 * Sets the panel's title.

 *

 * @param panel			A MenuPanel Handle.

 * @param title			Text to set as the title.

 * @param onlyIfEmpty	If true, the title will only be set if no title is set.

 * @noreturn

 * @error				Invalid Handle.

 */

native Handle:SetPanelTitle(Handle:panel, const String:text[], bool:onlyIfEmpty=false);

/**

 * Draws an item on a panel.  If the item takes up a slot, the position

 * is returned.

 *

 * @param panel			A MenuPanel Handle.

 * @param text			Display text to use.  If not a raw line, 

 *						the style may automatically add color markup.

 *						No numbering or newlines are needed.

 * @param style			ITEMDRAW style flags.

 * @return				A slot position, or 0 if item was a rawline or could not be drawn.

 * @error				Invalid Handle.

 */

native DrawPanelItem(Handle:panel, const String:text[], style=ITEMDRAW_DEFAULT);

/**

 * Draws a raw line of text on a panel, without any markup other than a newline.

 *

 * @param panel			A MenuPanel Handle.

 * @param text			Display text to use.

 * @return				True on success, false if raw lines are not supported.

 * @error				Invalid Handle.

 */

native DrawPanelText(Handle:panel, const String:text[]);

/**

 * Returns whether or not the given drawing flags are supported by

 * the menu style.

 *

 * @param panel			A MenuPanel Handle.

 * @param style			ITEMDRAW style flags.

 * @return				True if item is drawable, false otherwise.

 * @error				Invalid Handle.

 */

native CanPanelDrawFlags(Handle:panel, style);

/**

 * Sends a panel to a client.  Unlike full menus, the handler

 * function will only receive the following actions, both of 

 * which will have INVALID_HANDLE for a menu, and the client

 * as param1.

 *

 * MenuAction_Select (param2 will be the key pressed)

 * MenuAction_Cancel (param2 will be the reason)

 *

 * Also, if the menu fails to display, no callbacks will be called.

 *

 * @param panel			A MenuPanel Handle.

 * @param client		A client to draw to.

 * @param handler		The MenuHandler function to catch actions with.

 * @param time			Time to hold the menu for.

 * @return				True on success, false on failure.

 * @error				Invalid Handle.

 */

native bool:SendPanelToClient(Handle:panel, client, MenuHandler:handler, time);