com.sk89q.worldedit.history.change

Class BlockChange

java.lang.Object

com.sk89q.worldedit.history.change.BlockChange

All Implemented Interfaces:

Change

public class BlockChange
extends Object
implements Change

Represents a block change that may be undone or replayed.

This block change does not have an Extent assigned to it because one will be taken from the passed UndoContext. If the context does not have an extent (it is null), cryptic errors may occur.

Constructor Summary

Constructors

Constructor and Description
BlockChange(BlockVector position, BaseBlock previous, BaseBlock current) Create a new block change.

Method Summary

Modifier and Type	Method and Description
BaseBlock	getCurrent() Get the current block.
BlockVector	getPosition() Get the position.
BaseBlock	getPrevious() Get the previous block.
void	redo(UndoContext context) Perform an redo.
void	undo(UndoContext context) Perform an undo.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockChange

public BlockChange(BlockVector position,
                   BaseBlock previous,
                   BaseBlock current)

Create a new block change.

Parameters:

position - the position

previous - the previous block

current - the current block

Method Detail

getPosition

public BlockVector getPosition()

Get the position.

Returns:

the position

getPrevious

public BaseBlock getPrevious()

Get the previous block.

Returns:

the previous block

getCurrent

public BaseBlock getCurrent()

Get the current block.

Returns:

the current block

undo

public void undo(UndoContext context)
          throws WorldEditException

Description copied from interface: Change

Perform an undo. This method may not be available if the object was returned from ChangeSet.forwardIterator().

Specified by:

undo in interface Change

Parameters:

context - a context for undo

Throws:

WorldEditException - on an error

redo

public void redo(UndoContext context)
          throws WorldEditException

Description copied from interface: Change

Perform an redo. This method may not be available if the object was returned from ChangeSet.backwardIterator() ()}.

Specified by:

redo in interface Change

Parameters:

context - a context for redo

Throws:

WorldEditException - on an error