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Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class CompoundEdit - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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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
Tags copied from class: AbstractUndoableEdit
See Also:
AbstractUndoableEdit.canUndo()

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
Tags copied from class: AbstractUndoableEdit
See Also:
AbstractUndoableEdit.canRedo()

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
Tags copied from interface: UndoableEdit
See Also:
die()

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
Tags copied from class: AbstractUndoableEdit
See Also:
UndoableEdit.addEdit(javax.swing.undo.UndoableEdit)

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
Tags copied from class: AbstractUndoableEdit
See Also:
UndoableEdit.isSignificant()

getPresentationName

public String getPresentationName()
Returns getPresentationName from the last UndoableEdit added to edits. If edits is empty, calls super.
Overrides:
getPresentationName in class AbstractUndoableEdit
Tags copied from class: AbstractUndoableEdit
See Also:
AbstractUndoableEdit.getUndoPresentationName(), AbstractUndoableEdit.getRedoPresentationName()

getUndoPresentationName

public String getUndoPresentationName()
Returns getUndoPresentationName from the last UndoableEdit added to edits. If edits is empty, calls super.
Overrides:
getUndoPresentationName in class AbstractUndoableEdit
Tags copied from class: AbstractUndoableEdit
See Also:
AbstractUndoableEdit.getPresentationName()

getRedoPresentationName

public String getRedoPresentationName()
Returns getRedoPresentationName from the last UndoableEdit added to edits. If edits is empty, calls super.
Overrides:
getRedoPresentationName in class AbstractUndoableEdit
Tags copied from class: AbstractUndoableEdit
See Also:
AbstractUndoableEdit.getPresentationName()

toString

public String toString()
Returns a string that displays and identifies this object's properties.
Overrides:
toString in class AbstractUndoableEdit
Returns:
a String representation of this object
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