javax.swing.undo
Class CompoundEdit

java.lang.Object
  |
  +--javax.swing.undo.AbstractUndoableEdit
        |
        +--javax.swing.undo.CompoundEdit

Direct Known Subclasses:

AbstractDocument.DefaultDocumentEvent, UndoManager

public class CompoundEdit

extends AbstractUndoableEdit

A concrete subclass of AbstractUndoableEdit, used to assemble little UndoableEdits into great big ones.

See Also:

Serialized Form

Field Summary

protected Vector

edits The collection of UndoableEdits undone/redone en masse by this CompoundEdit

Fields inherited from class javax.swing.undo.AbstractUndoableEdit

RedoName, UndoName

Constructor Summary

CompoundEdit()

Method Summary

boolean	addEdit(UndoableEdit anEdit) If this edit is inProgress, accepts anEdit and returns true.
boolean	canRedo() Returns false if isInProgress or if super does.
boolean	canUndo() Returns false if isInProgress or if super does.
void	die() Send die to each subedit, in the reverse of the order that they were added
void	end() Sets inProgress to false.
String	getPresentationName() Returns getPresentationName from the last UndoableEdit added to edits.
String	getRedoPresentationName() Returns getRedoPresentationName from the last UndoableEdit added to edits.
String	getUndoPresentationName() Returns getUndoPresentationName from the last UndoableEdit added to edits.
boolean	isInProgress() Returns true if this edit is in progress--that is, it has not received end.
boolean	isSignificant() Returns true if any of the UndoableEdits in edits do.
protected UndoableEdit	lastEdit() Returns the last UndoableEdit in edits, or null if edits is empty
void	redo() Sends redo() to all contained UndoableEdits in the order in which they were added.
String	toString() Returns a string that displays and identifies this object's properties.
void	undo() Sends undo() to all contained UndoableEdits in the reverse of the order in which they were added.

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

edits

protected Vector edits

The collection of UndoableEdits undone/redone en masse by this CompoundEdit

Constructor Detail

CompoundEdit

public CompoundEdit()

Method Detail

undo

public void undo()
          throws CannotUndoException

Sends undo() to all contained UndoableEdits in the reverse of the order in which they were added.

Overrides:

undo in class AbstractUndoableEdit

redo

public void redo()
          throws CannotRedoException

Sends redo() to all contained UndoableEdits in the order in which they were added.

Overrides:

redo in class AbstractUndoableEdit

lastEdit

protected UndoableEdit lastEdit()

Returns the last UndoableEdit in edits, or null if edits is empty

die

public void die()

Send die to each subedit, in the reverse of the order that they were added

Overrides:

die in class AbstractUndoableEdit

addEdit

public boolean addEdit(UndoableEdit anEdit)

If this edit is inProgress, accepts anEdit and returns true.

The last edit added to this CompoundEdit is given a chance to addEdit(anEdit). If it refuses (returns false), anEdit is given a chance to replaceEdit the last edit. If anEdit returns false here, it is added to edits.

Overrides:

addEdit in class AbstractUndoableEdit

end

public void end()

Sets inProgress to false.

See Also:

canUndo(), canRedo()

canUndo

public boolean canUndo()

Returns false if isInProgress or if super does.

Overrides:

canUndo in class AbstractUndoableEdit

See Also:

isInProgress()

canRedo

public boolean canRedo()

Returns false if isInProgress or if super does.

Overrides:

canRedo in class AbstractUndoableEdit

See Also:

isInProgress()

isInProgress

public boolean isInProgress()

Returns true if this edit is in progress--that is, it has not received end. This generally means that edits are still being added to it.

See Also:

end()

isSignificant

public boolean isSignificant()

Returns true if any of the UndoableEdits in edits do. Returns false if they all return false.

Overrides:

isSignificant in class AbstractUndoableEdit

getPresentationName

public String getPresentationName()

Returns getPresentationName from the last UndoableEdit added to edits. If edits is empty, calls super.

Overrides:

getPresentationName in class AbstractUndoableEdit

getUndoPresentationName

public String getUndoPresentationName()

Returns getUndoPresentationName from the last UndoableEdit added to edits. If edits is empty, calls super.

Overrides:

getUndoPresentationName in class AbstractUndoableEdit

getRedoPresentationName

public String getRedoPresentationName()

Returns getRedoPresentationName from the last UndoableEdit added to edits. If edits is empty, calls super.

Overrides:

getRedoPresentationName in class AbstractUndoableEdit

toString

public String toString()

Returns a string that displays and identifies this object's properties.

Returns:

a String representation of this object

Overrides:

toString in class AbstractUndoableEdit