Package org.fxmisc.undo.impl

Class UnlimitedChangeQueue<C>

java.lang.Object

org.fxmisc.undo.impl.UnlimitedChangeQueue<C>

All Implemented Interfaces:

ChangeQueue<C>

public class UnlimitedChangeQueue<C>
extends java.lang.Object
implements ChangeQueue<C>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	UnlimitedChangeQueue.QueuePositionImpl

Nested classes/interfaces inherited from interface org.fxmisc.undo.impl.ChangeQueue

ChangeQueue.QueuePosition

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.ArrayList<RevisionedChange<C>>	changes
private int	currentPosition
private int	forgottenCount
private long	revision
private long	zeroPositionRevision

Constructor Summary

Constructors

Constructor	Description
UnlimitedChangeQueue()

Method Summary

Modifier and Type	Method	Description
void	forgetHistory()
ChangeQueue.QueuePosition	getCurrentPosition()
boolean	hasNext()
boolean	hasPrev()
C	next()	Returns the next item and increases the current position by 1.
C	peekNext()	Returns the next item.
C	peekPrev()	Returns the previous item.
C	prev()	Returns the previous item and decreases the current position by 1.
void	push(C... changes)
private long	revisionForPosition(int position)

Methods inherited from class java.lang.Object

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

Field Detail

changes

private final java.util.ArrayList<RevisionedChange<C>> changes

currentPosition

private int currentPosition

revision

private long revision

zeroPositionRevision

private long zeroPositionRevision

forgottenCount

private int forgottenCount

Constructor Detail

UnlimitedChangeQueue

public UnlimitedChangeQueue()

Method Detail

hasNext

public final boolean hasNext()

Specified by:

hasNext in interface ChangeQueue<C>

hasPrev

public final boolean hasPrev()

Specified by:

hasPrev in interface ChangeQueue<C>

peekNext

public final C peekNext()

Description copied from interface: ChangeQueue

Returns the next item. Current position stays unchanged.

Specified by:

peekNext in interface ChangeQueue<C>

next

public final C next()

Description copied from interface: ChangeQueue

Returns the next item and increases the current position by 1.

Specified by:

next in interface ChangeQueue<C>

peekPrev

public final C peekPrev()

Description copied from interface: ChangeQueue

Returns the previous item. Current position stays unchanged.

Specified by:

peekPrev in interface ChangeQueue<C>

prev

public final C prev()

Description copied from interface: ChangeQueue

Returns the previous item and decreases the current position by 1.

Specified by:

prev in interface ChangeQueue<C>

forgetHistory

public void forgetHistory()

Specified by:

forgetHistory in interface ChangeQueue<C>

push

@SafeVarargs
public final void push(C... changes)

Specified by:

push in interface ChangeQueue<C>

getCurrentPosition

public ChangeQueue.QueuePosition getCurrentPosition()

Specified by:

getCurrentPosition in interface ChangeQueue<C>

revisionForPosition

private long revisionForPosition(int position)