com.jidesoft.swing

Class DelayUndoManager

java.lang.Object

javax.swing.undo.AbstractUndoableEdit

javax.swing.undo.CompoundEdit

javax.swing.undo.UndoManager

com.jidesoft.swing.DelayUndoManager

All Implemented Interfaces:

Serializable, EventListener, UndoableEditListener, UndoableEdit

public class DelayUndoManager
extends UndoManager

An undo manager that aggregates UndoableEdits into one CompoundEdit if they are executed very close to each other. By default, the gap is 500 ms. You can control it by passing in a different number in the constructor.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Timer	_timer

Fields inherited from class javax.swing.undo.CompoundEdit

edits

Fields inherited from class javax.swing.undo.AbstractUndoableEdit

RedoName, UndoName

Constructor Summary

Constructors

Constructor and Description
DelayUndoManager()
DelayUndoManager(int delay)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	addEdit(UndoableEdit anEdit)
void	addEditWithoutCaching() Calls super.addEdit without caching.
boolean	canRedo() Override to commit the cache before checking redo status.
boolean	canUndo() Override to commit the cache before checking undo status.
void	commitCache() Commits the cached edit.
void	discardAllEdits()
void	discardCache()
boolean	isCacheEmpty() Checks if there are pending edits in the DelayUndoManager.
void	redo() Override to commit the cache before redo.
void	undo() Override to commit the cache before undo.

Methods inherited from class javax.swing.undo.UndoManager

canUndoOrRedo, editToBeRedone, editToBeUndone, end, getLimit, getRedoPresentationName, getUndoOrRedoPresentationName, getUndoPresentationName, redoTo, setLimit, toString, trimEdits, trimForLimit, undoableEditHappened, undoOrRedo, undoTo

Methods inherited from class javax.swing.undo.CompoundEdit

die, getPresentationName, isInProgress, isSignificant, lastEdit

Methods inherited from class javax.swing.undo.AbstractUndoableEdit

replaceEdit

Methods inherited from class java.lang.Object

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

Field Detail

_timer

protected Timer _timer

Constructor Detail

DelayUndoManager

public DelayUndoManager()

DelayUndoManager

public DelayUndoManager(int delay)

Method Detail

isCacheEmpty

public boolean isCacheEmpty()

Checks if there are pending edits in the DelayUndoManager.

Returns:

true if there are pending edits. Otherwise false.

commitCache

public void commitCache()

Commits the cached edit.

addEditWithoutCaching

public void addEditWithoutCaching()

Calls super.addEdit without caching.

discardCache

public void discardCache()

addEdit

public boolean addEdit(UndoableEdit anEdit)

Specified by:

addEdit in interface UndoableEdit

Overrides:

addEdit in class UndoManager

canUndo

public boolean canUndo()

Override to commit the cache before checking undo status.

Specified by:

canUndo in interface UndoableEdit

Overrides:

canUndo in class UndoManager

Returns:

true if an undo operation would be successful now, false otherwise

canRedo

public boolean canRedo()

Override to commit the cache before checking redo status.

Specified by:

canRedo in interface UndoableEdit

Overrides:

canRedo in class UndoManager

Returns:

true if an redo operation would be successful now, false otherwise

undo

public void undo()
          throws CannotUndoException

Override to commit the cache before undo.

Specified by:

undo in interface UndoableEdit

Overrides:

undo in class UndoManager

Throws:

CannotUndoException

redo

public void redo()
          throws CannotRedoException

Override to commit the cache before redo.

Specified by:

redo in interface UndoableEdit

Overrides:

redo in class UndoManager

Throws:

CannotRedoException

discardAllEdits

public void discardAllEdits()

Overrides:

discardAllEdits in class UndoManager