org.jhotdraw.draw.event
Class TransformEdit

java.lang.Object
  javax.swing.undo.AbstractUndoableEdit
      org.jhotdraw.draw.event.TransformEdit

All Implemented Interfaces:

java.io.Serializable, javax.swing.undo.UndoableEdit

public class TransformEdit
extends javax.swing.undo.AbstractUndoableEdit

An UndoableEdit event which can undo a lossless transform of Figures by applying the inverse of the transform to the figures.

This object is useful for undoing lossless transformations, such as the translation of figures.

If a lossy transforms is performed, such as rotation, scaling or shearing, then undos should be performed with TransformRestoreEdit instead.

Version:

$Id: TransformEdit.java 647 2010-01-24 22:52:59Z rawcoder $

Author:

Werner Randelshofer

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.swing.undo.AbstractUndoableEdit

RedoName, UndoName

Constructor Summary

TransformEdit(java.util.Collection<Figure> figures, java.awt.geom.AffineTransform tx)

TransformEdit(Figure figure, java.awt.geom.AffineTransform tx)
Creates a new instance.

Method Summary

boolean	addEdit(javax.swing.undo.UndoableEdit anEdit)
java.lang.String	getPresentationName()
void	redo()
boolean	replaceEdit(javax.swing.undo.UndoableEdit anEdit)
java.lang.String	toString()
void	undo()

Methods inherited from class javax.swing.undo.AbstractUndoableEdit

canRedo, canUndo, die, getRedoPresentationName, getUndoPresentationName, isSignificant

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformEdit

public TransformEdit(Figure figure,
                     java.awt.geom.AffineTransform tx)

Creates a new instance.

TransformEdit

public TransformEdit(java.util.Collection<Figure> figures,
                     java.awt.geom.AffineTransform tx)

Method Detail

getPresentationName

public java.lang.String getPresentationName()

Specified by:

getPresentationName in interface javax.swing.undo.UndoableEdit

Overrides:

getPresentationName in class javax.swing.undo.AbstractUndoableEdit

addEdit

public boolean addEdit(javax.swing.undo.UndoableEdit anEdit)

Specified by:

addEdit in interface javax.swing.undo.UndoableEdit

Overrides:

addEdit in class javax.swing.undo.AbstractUndoableEdit

replaceEdit

public boolean replaceEdit(javax.swing.undo.UndoableEdit anEdit)

Specified by:

replaceEdit in interface javax.swing.undo.UndoableEdit

Overrides:

replaceEdit in class javax.swing.undo.AbstractUndoableEdit

redo

public void redo()
          throws javax.swing.undo.CannotRedoException

Specified by:

redo in interface javax.swing.undo.UndoableEdit

Overrides:

redo in class javax.swing.undo.AbstractUndoableEdit

Throws:

javax.swing.undo.CannotRedoException

undo

public void undo()
          throws javax.swing.undo.CannotUndoException

Specified by:

undo in interface javax.swing.undo.UndoableEdit

Overrides:

undo in class javax.swing.undo.AbstractUndoableEdit

Throws:

javax.swing.undo.CannotUndoException

toString

public java.lang.String toString()

Overrides:

toString in class javax.swing.undo.AbstractUndoableEdit