Package org.bukkit.event.player

Class PlayerCommandPreprocessEvent

java.lang.Object

org.bukkit.event.Event

org.bukkit.event.player.PlayerEvent

org.bukkit.event.player.PlayerCommandPreprocessEvent

All Implemented Interfaces:

Cancellable

public class PlayerCommandPreprocessEvent
extends PlayerEvent
implements Cancellable

This event is called whenever a player runs a command (by placing a slash at the start of their message). It is called early in the command handling process, and modifications in this event (via setMessage(String)) will be shown in the behavior.

Many plugins will have no use for this event, and you should attempt to avoid using it if it is not necessary.

Some examples of valid uses for this event are:

• Logging executed commands to a separate file
• Variable substitution. For example, replacing ${nearbyPlayer} with the name of the nearest other player, or simulating the @a and @p decorators used by Command Blocks in plugins that do not handle it.
• Conditionally blocking commands belonging to other plugins. For example, blocking the use of the /home command in a combat arena.
• Per-sender command aliases. For example, after a player runs the command /calias cr gamemode creative, the next time they run /cr, it gets replaced into /gamemode creative. (Global command aliases should be done by registering the alias.)

Examples of incorrect uses are:

• Using this event to run command logic

If the event is cancelled, processing of the command will halt.

The state of whether or not there is a slash (/) at the beginning of the message should be preserved. If a slash is added or removed, unexpected behavior may result.

Nested Class Summary

Nested classes/interfaces inherited from class org.bukkit.event.Event

Event.Result

Field Summary

Fields inherited from class org.bukkit.event.player.PlayerEvent

player

Constructor Summary

Constructors

Constructor	Description
PlayerCommandPreprocessEvent(@NotNull Player player, @NotNull String message)
PlayerCommandPreprocessEvent(@NotNull Player player, @NotNull String message, @NotNull Set<Player> recipients)

Method Summary

Modifier and Type	Method	Description
static @NotNull HandlerList	getHandlerList()
@NotNull HandlerList	getHandlers()
@NotNull String	getMessage()	Gets the command that the player is attempting to send.
@NotNull Set<Player>	getRecipients()	Deprecated. This method is provided for backward compatibility with no guarantee to the effect of viewing or modifying the set.
boolean	isCancelled()	Gets the cancellation state of this event.
void	setCancelled(boolean cancel)	Sets the cancellation state of this event.
void	setMessage(@NotNull String command)	Sets the command that the player will send.
void	setPlayer(@NotNull Player player)	Sets the player that this command will be executed as.

Methods inherited from class org.bukkit.event.Event

getEventName, isAsynchronous

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from class org.bukkit.event.player.PlayerEvent

getPlayer

Constructor Detail

PlayerCommandPreprocessEvent

public PlayerCommandPreprocessEvent(@NotNull
                                    @NotNull Player player,
                                    @NotNull
                                    @NotNull String message)

PlayerCommandPreprocessEvent

public PlayerCommandPreprocessEvent(@NotNull
                                    @NotNull Player player,
                                    @NotNull
                                    @NotNull String message,
                                    @NotNull
                                    @NotNull Set<Player> recipients)

Method Detail

isCancelled

public boolean isCancelled()

Description copied from interface: Cancellable

Gets the cancellation state of this event. A cancelled event will not be executed in the server, but will still pass to other plugins

Specified by:

isCancelled in interface Cancellable

Returns:

true if this event is cancelled

setCancelled

public void setCancelled(boolean cancel)

Description copied from interface: Cancellable

Sets the cancellation state of this event. A cancelled event will not be executed in the server, but will still pass to other plugins.

Specified by:

setCancelled in interface Cancellable

Parameters:

cancel - true if you wish to cancel this event

getMessage

@NotNull
public @NotNull String getMessage()

Gets the command that the player is attempting to send.

All commands begin with a special character; implementations do not consider the first character when executing the content.

Returns:

Message the player is attempting to send

setMessage

public void setMessage(@NotNull
                       @NotNull String command)
                throws IllegalArgumentException

Sets the command that the player will send.

All commands begin with a special character; implementations do not consider the first character when executing the content.

Parameters:

command - New message that the player will send

Throws:

IllegalArgumentException - if command is null or empty

setPlayer

public void setPlayer(@NotNull
                      @NotNull Player player)
               throws IllegalArgumentException

Sets the player that this command will be executed as.

Parameters:

player - New player which this event will execute as

Throws:

IllegalArgumentException - if the player provided is null

getRecipients

@NotNull
@Deprecated
public @NotNull Set<Player> getRecipients()

Deprecated. This method is provided for backward compatibility with no guarantee to the effect of viewing or modifying the set.

Gets a set of recipients that this chat message will be displayed to.

The set returned is not guaranteed to be mutable and may auto-populate on access. Any listener accessing the returned set should be aware that it may reduce performance for a lazy set implementation. Listeners should be aware that modifying the list may throw UnsupportedOperationException if the event caller provides an unmodifiable set.

Returns:

All Players who will see this chat message

getHandlers

@NotNull
public @NotNull HandlerList getHandlers()

Specified by:

getHandlers in class Event

getHandlerList

@NotNull
public static @NotNull HandlerList getHandlerList()