ur_rna.StructureEditor.services

Class History<T>

java.lang.Object

ur_rna.StructureEditor.services.History<T>

public class History<T>
extends java.lang.Object

Stores the history of an arbitrary model for undo/redo

Field Summary

Fields

Modifier and Type	Field and Description
private int	pos
private java.util.ArrayList<T>	stack

Constructor Summary

Constructors

Constructor and Description
History()

Method Summary

Modifier and Type	Method and Description
boolean	canRedo()
boolean	canUndo()
void	clear()
private void	clearRedo() Clear all entries in front of the current position.
T	current()
java.util.List<T>	entries()
T	get(int position)
int	position()
T	redo()
int	size()
void	store(T state) Store the current state of the model.
T	undo()

Methods inherited from class java.lang.Object

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

Field Detail

pos

private int pos

stack

private java.util.ArrayList<T> stack

Constructor Detail

History

public History()

Method Detail

canRedo

public boolean canRedo()

canUndo

public boolean canUndo()

clear

public void clear()

clearRedo

private void clearRedo()

Clear all entries in front of the current position.

current

public T current()

entries

public java.util.List<T> entries()

get

public T get(int position)

position

public int position()

redo

public T redo()

size

public int size()

store

public void store(T state)

Store the current state of the model. Typically this clears all history in front of the current entry.

Parameters:

state - The current state of the model.

undo

public T undo()