org.xbup.io.command.undo

Class XBLinearUndo

java.lang.Object

org.xbup.io.command.undo.XBLinearUndo

public class XBLinearUndo
extends java.lang.Object

Class for keeping undo command sequence. TODO: Incomplete

Version:

0.1 wr20.0 2010/11/08

Author:

XBUP Project (http://xbup.org)

Constructor Summary

Constructors

Constructor and Description
XBLinearUndo(XBTree tree) Creates a new instance.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canRedo()
boolean	canUndo()
void	clear()
void	doSync() Perform revert to sync point
java.lang.String	getDesc(XBCommand undoStep)
long	getMaxSize()
long	getMaxUndo()
long	getSyncPoint()
long	getUsedSize()
void	performRedo()
void	performRedo(int count)
void	performUndo()
void	performUndo(int count)
void	setMaxSize(long maxSize)
void	setMaxUndo(long maxUndo)
void	setSyncPoint(long syncPoint)

Methods inherited from class java.lang.Object

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

Constructor Detail

XBLinearUndo

public XBLinearUndo(XBTree tree)

Creates a new instance.

Method Detail

performUndo

public void performUndo()
                 throws java.lang.Exception

Throws:

java.lang.Exception

performRedo

public void performRedo()
                 throws java.lang.Exception

Throws:

java.lang.Exception

performUndo

public void performUndo(int count)
                 throws java.lang.Exception

Throws:

java.lang.Exception

performRedo

public void performRedo(int count)
                 throws java.lang.Exception

Throws:

java.lang.Exception

clear

public void clear()

canUndo

public boolean canUndo()

canRedo

public boolean canRedo()

getMaxUndo

public long getMaxUndo()

doSync

public void doSync()

Perform revert to sync point

setMaxUndo

public void setMaxUndo(long maxUndo)

getMaxSize

public long getMaxSize()

getDesc

public java.lang.String getDesc(XBCommand undoStep)

setMaxSize

public void setMaxSize(long maxSize)

getUsedSize

public long getUsedSize()

getSyncPoint

public long getSyncPoint()

setSyncPoint

public void setSyncPoint(long syncPoint)