/**

  * vim: set ts=4 :

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

  * SourceMod (C)2004-2008 AlliedModders LLC.  All rights reserved.

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

  *

  * This file is part of the SourceMod/SourcePawn SDK.

  *

  * This program is free software; you can redistribute it and/or modify it under

  * the terms of the GNU General Public License, version 3.0, as published by the

  * Free Software Foundation.

  * 

  * This program is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more

  * details.

  *

  * You should have received a copy of the GNU General Public License along with

  * this program.  If not, see <http://www.gnu.org/licenses/>.

  *

  * As a special exception, AlliedModders LLC gives you permission to link the

  * code of this program (as well as its derivative works) to "Half-Life 2," the

  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software

  * by the Valve Corporation.  You must obey the GNU General Public License in

  * all respects for all other code used.  Additionally, AlliedModders LLC grants

  * this exception to all derivative works.  AlliedModders LLC defines further

  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),

  * or <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 display has fully ended.

 										 param1 is the MenuEnd reason, and if it's MenuEnd_Cancelled, then 

 										 param2 is the MenuCancel reason from MenuAction_Cancel.

 										 */

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

 										 This is not called if SetVoteResultCallback has been used on the menu. */

 	MenuAction_VoteStart = (1<<6), 	/**< (VOTE ONLY): A vote sequence has started (nothing passed) */

 	MenuAction_VoteCancel = (1<<7),	/**< (VOTE ONLY): A vote sequence has been cancelled (param1=reason) */

 	MenuAction_DrawItem = (1<<8),	/**< An item is being drawn; return the new style (param1=client, param2=item) */

 	MenuAction_DisplayItem = (1<<9),/**< Item text is being drawn to the display (param1=client, param2=item)

 										  To change the text, use RedrawMenuItem().

 										  If you do so, return its return value.  Otherwise, return 0.

 										  */

 };

 /** Default menu actions */

 #define MENU_ACTIONS_DEFAULT	MenuAction_Select|MenuAction_Cancel|MenuAction_End

 /** All menu actions */

 #define MENU_ACTIONS_ALL		MenuAction:0xFFFFFFFF

 #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) */

 #define MENUFLAG_BUTTON_EXIT		(1<<0)	/**< Menu has an "exit" button (default if paginated) */

 #define MENUFLAG_BUTTON_EXITBACK	(1<<1)	/**< Menu has an "exit back" button */

 #define MENUFLAG_NO_SOUND			(1<<2)	/**< Menu will not have any select sounds */

 #define VOTEINFO_CLIENT_INDEX		0		/**< Client index */

 #define VOTEINFO_CLIENT_ITEM		1		/**< Item the client selected, or -1 for none */

 #define VOTEINFO_ITEM_INDEX			0		/**< Item index */

 #define VOTEINFO_ITEM_VOTES			1		/**< Number of votes for the item */

 #define VOTEFLAG_NO_REVOTES			(1<<0)	/**< Players cannot change their votes */

 /**

  * Reasons a menu can be cancelled (MenuAction_Cancel).

  */

 enum

 {

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

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

 	MenuCancel_Exit = -3,			/**< Client exited via "exit" */

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

 	MenuCancel_Timeout = -5,		/**< Menu timed out */

 	MenuCancel_ExitBack = -6,		/**< Client selected "exit back" on a paginated menu */

 };

 /**

  * Reasons a vote can be cancelled (MenuAction_VoteCancel).

  */

 enum

 {

 	VoteCancel_Generic = -1,		/**< Vote was generically cancelled. */

 	VoteCancel_NoVotes = -2,		/**< Vote did not receive any votes. */

 };

 /**

  * Reasons a menu ended (MenuAction_End).

  */

 enum

 {

 	MenuEnd_Selected = 0,			/**< Menu item was selected */

 	MenuEnd_VotingDone = -1,		/**< Voting finished */

 	MenuEnd_VotingCancelled = -2,	/**< Voting was cancelled */

 	MenuEnd_Cancelled = -3,			/**< Menu was cancelled (reason in param2) */

 	MenuEnd_Exit = -4,				/**< Menu was cleanly exited via "exit" */

 	MenuEnd_ExitBack = -5,			/**< Menu was cleanly exited via "back" */

 };

 /**

  * 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 public MenuHandler(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);

 /**

  * Displays a menu to a client, starting from the given item.

  *

  * @param menu				Menu Handle.

  * @param client			Client index.

  * @param first_item		First item to begin drawing from.

  * @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:DisplayMenuAtItem(Handle:menu, client, first_item, 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.  Anything other than DEFAULT or 

  *							DISABLED will be completely ignored when paginating.

  * @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.  Anything other than DEFAULT or 

  *							DISABLED will be completely ignored when paginating.

  * @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 first item on the page of a currently selected menu.

  *

  * This is only valid inside a MenuAction_Select callback.

  *

  * @return					First item number on the page the client was viewing 

  *							before selecting the item in the callback.  This can 

  *							be used to re-display the menu from the original 

  *							position.

  * @error					Not called from inside a MenuAction_Select callback.

  */

 native GetMenuSelectionPosition();

 /**

  * 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.

  *

  * If itemsPerPage is MENU_NO_PAGINATION, and the exit button flag is set, 

  * then the exit button flag is removed.  It can be re-applied if desired.

  *

  * @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:...);

 /**

  * Returns the text of a menu's title.

  *

  * @param menu				Menu Handle.

  * @param buffer			Buffer to store title.

  * @param maxlength			Maximum length of the buffer.

  * @return					Number of bytes written.

  * @error					Invalid Handle/

  */

 native GetMenuTitle(Handle:menu, String:buffer[], maxlength);

 /**

  * 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, paginated menus 

  * have an exit button.

  *

  * If a menu's pagination is changed to MENU_NO_PAGINATION, and the pagination 

  * was previously a different value, then the Exit button status is changed to 

  * false.  It must be explicitly re-enabled afterwards.

  *

  * If a non-paginated menu has an exit button, then at most 9 items will be 

  * displayed.

  *

  * @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);

 /**

  * Returns whether or not the menu has an "exit back" button.  By default, 

  * menus do not have an exit back button.  

  *

  * Exit Back buttons appear as "Back" on page 1 of paginated menus and have 

  * functionality defined by the user in MenuEnd_ExitBack.

  *

  * @param menu				Menu Handle.

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

  * @error					Invalid Handle.

  */

 native bool:GetMenuExitBackButton(Handle:menu);

 /**

  * Sets whether or not the menu has an "exit back" button. By default, menus 

  * do not have an exit back button.

  *

  * Exit Back buttons appear as "Back" on page 1 of paginated menus and have 

  * functionality defined by the user in MenuEnd_ExitBack.

  *

  * @param menu				Menu Handle.

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

  * @error					Invalid Handle.

  */

 native SetMenuExitBackButton(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.

  *

  * If any vote is in progress on a menu, it will be cancelled.

  *

  * @param menu				Menu Handle.

  * @noreturn

  * @error					Invalid Handle.

  */

 native CancelMenu(Handle:menu);

 /**

  * Retrieves a menu's option flags.

  *

  * @param menu				Menu Handle.

  * @return					A bitstring of MENUFLAG bits.

  * @error					Invalid Handle.

  */

 native GetMenuOptionFlags(Handle:menu);

 /**

  * Sets a menu's option flags.

  *

  * If a certain bit is not supported, it will be stripped before being set.

  * See SetMenuExitButton() for information on Exit buttons.

  * See SetMenuExitBackButton() for information on Exit Back buttons.

  *

  * @param menu				Menu Handle.

  * @param flags				A new bitstring of MENUFLAG bits.

  * @noreturn

  * @error					Invalid Handle.

  */

 native SetMenuOptionFlags(Handle:menu, flags);

 /**

  * Returns whether a vote is in progress.

  *

  * @param menu				Deprecated; no longer used.

  * @return					True if a vote is in progress, false otherwise.

  */

 native bool:IsVoteInProgress(Handle:menu=INVALID_HANDLE);

 /**

  * Cancels the vote in progress.

  *

  * @noreturn

  * @error					If no vote is in progress.

  */

 native CancelVote();

 /**

  * 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 

  * from a list of the tied items.

  *

  * Note that MenuAction_VoteEnd and MenuAction_VoteStart are both

  * default callbacks and do not need to be enabled.

  *

  * @param menu				Menu Handle.

  * @param clients			Array of clients to broadcast to.

  * @param numClients		Number of clients in the array.

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

  * @param flags				Optional voting flags.

  * @return					True on success, false if this menu already has a vote session

  *							in progress.

  * @error					Invalid Handle, or a vote is already in progress.

  */

 native bool:VoteMenu(Handle:menu, clients[], numClients, time, flags=0);

 /**

  * Sends a vote menu to all clients.  See VoteMenu() for more information.

  *

  * @param menu				Menu Handle.

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

  * @param flags				Optional voting flags.

  * @return					True on success, false if this menu already has a vote session

  *							in progress.

  * @error					Invalid Handle.

  */

 stock VoteMenuToAll(Handle:menu, time, flags=0)

 {

 	new num = GetMaxClients();

 	new total;

 	decl players[num];

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

 	{

 		if (!IsClientInGame(i))

 		{

 			continue;

 		}

 		players[total++] = i;

 	}

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

 }

 /**

  * Callback for when a vote has ended and results are available.

  *

  * @param menu				The menu being voted on.

  * @param num_votes			Number of votes tallied in total.

  * @param num_clients		Number of clients who could vote.

  * @param client_info		Array of clients.  Use VOTEINFO_CLIENT_ defines.

  * @param num_items			Number of unique items that were selected.

  * @param item_info			Array of items, sorted by count.  Use VOTEINFO_ITEM

  *							defines.

  * @noreturn

  */

 functag public VoteHandler(Handle:menu,

 						   num_votes, 

 						   num_clients,

 						   const client_info[][2], 

 						   num_items,

 						   const item_info[][2]);	   

 /**

  * Sets an advanced vote handling callback.  If this callback is set,

  * MenuAction_VoteEnd will not be called.

  *

  * @param menu				Menu Handle.

  * @param callback			Callback function.

  * @noreturn

  * @error					Invalid Handle or callback.

  */

 native SetVoteResultCallback(Handle:menu, VoteHandler:callback);

 /**

  * Returns the number of seconds you should "wait" before displaying

  * a publicly invocable menu.  This number is the time remaining until

  * (last_vote + sm_vote_delay).

  *

  * @return					Number of seconds to wait, or 0 for none.

  */

 native CheckVoteDelay();

 /**

  * Returns whether a client is in the pool of clients allowed 

  * to participate in the current vote.  This is determined by 

  * the client list passed to VoteMenu().

  *

  * @param client			Client index.

  * @return					True if client is allowed to vote, false otherwise.

  * @error					If no vote is in progress or client index is invalid.

  */

 native bool:IsClientInVotePool(client);

 /**

  * Redraws the current vote menu to a client in the voting pool.

  *

  * @param client			Client index.

  * @param revotes			True to allow revotes, false otherwise.

  * @return					True on success, false if the client is in the vote pool 

  *							but cannot vote again.

  * @error					No vote in progress, client is not in the voting pool, 

  *							or client index is invalid.

  */

 native bool:RedrawClientVoteMenu(client, bool:revotes=true);

 /**

  * 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.

  *

  * @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, or INVALID_HANDLE if inside a 

  *						MenuAction_DisplayItem callback.

  * @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);

 /**

  * Sets the selectable key map of a panel.  This is not supported by

  * all styles (only by Radio, as of this writing).  

  *

  * @param keys			An integer where each bit N allows key

  *						N+1 to be selected.  If no keys are selectable,

  *						then key 0 (bit 9) is automatically set.

  * @return 				True if supported, false otherwise.

  */

 native bool:SetPanelKeys(Handle:panel, keys);

 /**

  * 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);

 /**

  * @brief Returns the amount of text the menu can still hold.  If this is 

  * limit is reached or overflowed, the text is silently truncated.  

  *

  * Radio menus: Currently 511 characters (512 bytes).

  * Valve menus: Currently -1 (no meaning).

  *

  * @param panel			A MenuPanel Handle.

  * @return				Number of characters that the menu can still hold, 

  *						or -1 if there is no known limit.

  * @error				Invalid Handle.

  */

 native GetPanelTextRemaining(Handle:panel);

 /**

  * @brief Returns the current key position.

  *

  * @param panel			A MenuPanel Handle.

  * @return				Current key position starting at 1.

  * @error				Invalid Handle.

  */

 native GetPanelCurrentKey(Handle:panel);

 /**

  * @brief Sets the next key position.  This cannot be used

  * to traverse backwards.

  *

  * @param panel			A MenuPanel Handle.

  * @param key			Key that is greater or equal to

  *						GetPanelCurrentKey().

  * @return				True on success, false otherwise.

  * @error				Invalid Handle.

  */

 native bool:SetPanelCurrentKey(Handle:panel, key);

 /**

  * @brief Redraws menu text from inside a MenuAction_DisplayItem callback.

  * 

  * @param text			Menu text to draw.

  * @return				Item position; must be returned via the callback.

  */

 native RedrawMenuItem(const String:text[]);

 /**

  * This function is provided for legacy code only.  Some older plugins may use 

  * network messages instead of the panel API.  This function wraps the panel 

  * API for eased portability into the SourceMod menu system.  

  *

  * This function is only usable with the Radio Menu style.  You do not need to 

  * split up your menu into multiple packets; SourceMod will break the string 

  * up internally.

  *

  * @param client		Client index.

  * @param str			Full menu string as would be passed over the network. 

  * @param time			Time to hold the menu for.

  * @param keys			Selectable key bitstring.

  * @param handler		Optional handler function, with the same rules as

  *						SendPanelToClient().

  * @return				True on success, false on failure.

  * @error				Invalid client index, or radio menus not supported.

  */

 native bool:InternalShowMenu(client, const String:str[], time, keys=-1, MenuHandler:handler=MenuHandler:-1);

 /**

  * Retrieves voting information from MenuAction_VoteEnd.

  *

  * @param param2		Second parameter of MenuAction_VoteEnd.

  * @param winningVotes	Number of votes received by the winning option.

  * @param totalVotes	Number of total votes received.

  * @noreturn

  */

 stock GetMenuVoteInfo(param2, &winningVotes, &totalVotes)

 {

 	winningVotes = param2 & 0xFFFF;

 	totalVotes = param2 >> 16;

 }

 /**

  * Quick stock to determine whether voting is allowed.  This doesn't let you 

  * fine-tune a reason for not voting, so it's not recommended for lazily 

  * telling clients that voting isn't allowed.

  * 

  * @return				True if voting is allowed, false if voting is in progress

  *						or the cooldown is active.

  */

 stock bool:IsNewVoteAllowed()

 {

 	if (IsVoteInProgress() || CheckVoteDelay() != 0)

 	{

 		return false;

 	}

 	return true;

 }