com.mxgraph.util
Class mxUndoableEdit

java.lang.Object
  com.mxgraph.util.mxUndoableEdit

public class mxUndoableEdit
extends Object

Implements a 2-dimensional rectangle with double precision coordinates.

Nested Class Summary

static interface

mxUndoableEdit.mxUndoableChange Defines the requirements for an undoable change.

Field Summary

protected List<mxUndoableEdit.mxUndoableChange>	changes Holds the list of changes that make up this undoable edit.
protected boolean	redone Specifies the state of the undoable edit.
protected boolean	significant Specifies this undoable edit is significant.
protected Object	source Holds the source of the undoable edit.
protected boolean	undone Specifies the state of the undoable edit.

Constructor Summary

mxUndoableEdit(Object source)
Constructs a new undoable edit for the given source.

mxUndoableEdit(Object source, boolean significant)
Constructs a new undoable edit for the given source.

Method Summary

void	add(mxUndoableEdit.mxUndoableChange change) Adds the specified change to this edit.
void	die() Hook to free resources after the edit has been removed from the command history.
void	dispatch() Hook to notify any listeners of the changes after an undo or redo has been carried out.
List<mxUndoableEdit.mxUndoableChange>	getChanges()
Object	getSource()
boolean	isEmpty() Returns true if the this edit contains no changes.
boolean	isRedone()
boolean	isSignificant()
boolean	isUndone()
void	redo()
void	undo()

Methods inherited from class java.lang.Object

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

Field Detail

source

protected Object source

Holds the source of the undoable edit.

changes

protected List<mxUndoableEdit.mxUndoableChange> changes

Holds the list of changes that make up this undoable edit.

significant

protected boolean significant

Specifies this undoable edit is significant. Default is true.

undone

protected boolean undone

Specifies the state of the undoable edit.

redone

protected boolean redone

Specifies the state of the undoable edit.

Constructor Detail

mxUndoableEdit

public mxUndoableEdit(Object source)

Constructs a new undoable edit for the given source.

mxUndoableEdit

public mxUndoableEdit(Object source,
                      boolean significant)

Constructs a new undoable edit for the given source.

Method Detail

dispatch

public void dispatch()

Hook to notify any listeners of the changes after an undo or redo has been carried out. This implementation is empty.

die

public void die()

Hook to free resources after the edit has been removed from the command history. This implementation is empty.

getSource

public Object getSource()

Returns:

the source

getChanges

public List<mxUndoableEdit.mxUndoableChange> getChanges()

Returns:

the changes

isSignificant

public boolean isSignificant()

Returns:

the significant

isUndone

public boolean isUndone()

Returns:

the undone

isRedone

public boolean isRedone()

Returns:

the redone

isEmpty

public boolean isEmpty()

Returns true if the this edit contains no changes.

add

public void add(mxUndoableEdit.mxUndoableChange change)

Adds the specified change to this edit. The change is an object that is expected to either have an undo and redo, or an execute function.

undo

public void undo()

redo

public void redo()