public class AbstractUndoableEdit extends Object implements UndoableEdit, Serializable
UndoableEdit,
 implementing simple responses to all boolean methods in
 that interface.| Modifier and Type | Field and Description | 
|---|---|
| protected static String | RedoNameString returned by  getRedoPresentationName;
 as of Java 2 platform v1.3.1 this field is no longer used. | 
| protected static String | UndoNameString returned by  getUndoPresentationName;
 as of Java 2 platform v1.3.1 this field is no longer used. | 
| Constructor and Description | 
|---|
| AbstractUndoableEdit()Creates an  AbstractUndoableEditwhich defaultshasBeenDoneandalivetotrue. | 
| Modifier and Type | Method and Description | 
|---|---|
| boolean | addEdit(UndoableEdit anEdit)This default implementation returns false. | 
| boolean | canRedo()Returns  trueif this edit isaliveandhasBeenDoneisfalse. | 
| boolean | canUndo()Returns true if this edit is  aliveandhasBeenDoneistrue. | 
| void | die()Sets  aliveto false. | 
| String | getPresentationName()This default implementation returns "". | 
| String | getRedoPresentationName()Retreives the value from the defaults table with key
  AbstractUndoableEdit.redoTextand returns
 that value followed by a space, followed bygetPresentationName. | 
| String | getUndoPresentationName()Retreives the value from the defaults table with key
  AbstractUndoableEdit.undoTextand returns
 that value followed by a space, followed bygetPresentationName. | 
| boolean | isSignificant()This default implementation returns true. | 
| void | redo()Throws  CannotRedoExceptionifcanRedoreturns false. | 
| boolean | replaceEdit(UndoableEdit anEdit)This default implementation returns false. | 
| String | toString()Returns a string that displays and identifies this
 object's properties. | 
| void | undo()Throws  CannotUndoExceptionifcanUndoreturnsfalse. | 
protected static final String UndoName
getUndoPresentationName;
 as of Java 2 platform v1.3.1 this field is no longer used. This value
 is now localized and comes from the defaults table with key
 AbstractUndoableEdit.undoText.UIDefaults, 
Constant Field Valuesprotected static final String RedoName
getRedoPresentationName;
 as of Java 2 platform v1.3.1 this field is no longer used. This value
 is now localized and comes from the defaults table with key
 AbstractUndoableEdit.redoText.UIDefaults, 
Constant Field Valuespublic AbstractUndoableEdit()
AbstractUndoableEdit which defaults
 hasBeenDone and alive to true.public void die()
alive to false. Note that this
 is a one way operation; dead edits cannot be resurrected.
 Sending undo or redo to
 a dead edit results in an exception being thrown.
 Typically an edit is killed when it is consolidated by
 another edit's addEdit or replaceEdit
 method, or when it is dequeued from an UndoManager.
die in interface UndoableEditCompoundEdit.die()public void undo()
          throws CannotUndoException
CannotUndoException if canUndo
 returns false. Sets hasBeenDone
 to false. Subclasses should override to undo the
 operation represented by this edit. Override should begin with
 a call to super.undo in interface UndoableEditCannotUndoException - if canUndo
    returns falsecanUndo()public boolean canUndo()
alive
 and hasBeenDone is true.canUndo in interface UndoableEditalive
    and hasBeenDone is truedie(), 
undo(), 
redo()public void redo()
          throws CannotRedoException
CannotRedoException if canRedo
 returns false. Sets hasBeenDone to true.
 Subclasses should override to redo the operation represented by
 this edit. Override should begin with a call to super.redo in interface UndoableEditCannotRedoException - if canRedo
     returns falsecanRedo()public boolean canRedo()
true if this edit is alive
 and hasBeenDone is false.canRedo in interface UndoableEdittrue if this edit is alive
   and hasBeenDone is falsedie(), 
undo(), 
redo()public boolean addEdit(UndoableEdit anEdit)
addEdit in interface UndoableEditanEdit - the edit to be addedUndoableEdit.addEdit(javax.swing.undo.UndoableEdit)public boolean replaceEdit(UndoableEdit anEdit)
replaceEdit in interface UndoableEditanEdit - the edit to replaceUndoableEdit.replaceEdit(javax.swing.undo.UndoableEdit)public boolean isSignificant()
isSignificant in interface UndoableEditUndoableEdit.isSignificant()public String getPresentationName()
getUndoPresentationName and
 getRedoPresentationName to
 construct the strings they return. Subclasses should override to
 return an appropriate description of the operation this edit
 represents.getPresentationName in interface UndoableEditgetUndoPresentationName(), 
getRedoPresentationName()public String getUndoPresentationName()
AbstractUndoableEdit.undoText and returns
 that value followed by a space, followed by
 getPresentationName.
 If getPresentationName returns "",
 then the defaults value is returned alone.getUndoPresentationName in interface UndoableEditAbstractUndoableEdit.undoText, followed
    by a space, followed by getPresentationName
    unless getPresentationName is "" in which
    case, the defaults value is returned alone.getPresentationName()public String getRedoPresentationName()
AbstractUndoableEdit.redoText and returns
 that value followed by a space, followed by
 getPresentationName.
 If getPresentationName returns "",
 then the defaults value is returned alone.getRedoPresentationName in interface UndoableEditAbstractUndoableEdit.redoText, followed
    by a space, followed by getPresentationName
    unless getPresentationName is "" in which
    case, the defaults value is returned alone.getPresentationName() Submit a bug or feature 
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