public class UndoableEditSupport extends Object
UndoableEdit
listeners.Modifier and Type | Field | Description |
---|---|---|
protected CompoundEdit |
compoundEdit |
The compound edit. |
protected Vector |
listeners |
The list of listeners. |
protected Object |
realSource |
The real source. |
protected int |
updateLevel |
The update level. |
Constructor | Description |
---|---|
UndoableEditSupport() |
Constructs an UndoableEditSupport object. |
UndoableEditSupport |
Constructs an UndoableEditSupport object. |
Modifier and Type | Method | Description |
---|---|---|
protected void |
_postEdit |
Called only from postEdit and endUpdate . |
void |
addUndoableEditListener |
Registers an UndoableEditListener . |
void |
beginUpdate() |
Starts a compound edit update. |
protected CompoundEdit |
createCompoundEdit() |
Called only from beginUpdate . |
void |
endUpdate() |
DEADLOCK WARNING: Calling this method may call undoableEditHappened in all listeners. |
UndoableEditListener[] |
getUndoableEditListeners() |
Returns an array of all the UndoableEditListener s added to this UndoableEditSupport with addUndoableEditListener(). |
int |
getUpdateLevel() |
Returns the update level value. |
void |
postEdit |
DEADLOCK WARNING: Calling this method may call undoableEditHappened in all listeners. |
void |
removeUndoableEditListener |
Removes an UndoableEditListener . |
String |
toString() |
Returns a string that displays and identifies this object's properties. |
protected int updateLevel
protected CompoundEdit compoundEdit
protected Vector<UndoableEditListener> listeners
protected Object realSource
public UndoableEditSupport()
UndoableEditSupport
object.public UndoableEditSupport(Object r)
UndoableEditSupport
object.r
- an Object
public void addUndoableEditListener(UndoableEditListener l)
UndoableEditListener
. The listener is notified whenever an edit occurs which can be undone.l
- an UndoableEditListener
objectpublic void removeUndoableEditListener(UndoableEditListener l)
UndoableEditListener
.l
- the UndoableEditListener
object to be removedpublic UndoableEditListener[] getUndoableEditListeners()
UndoableEditListener
s added to this UndoableEditSupport with addUndoableEditListener().UndoableEditListener
s added or an empty array if no listeners have been addedprotected void _postEdit(UndoableEdit e)
postEdit
and endUpdate
. Calls undoableEditHappened
in all listeners. No synchronization is performed here, since the two calling methods are synchronized.e
- edit to be verifiedpublic void postEdit(UndoableEdit e)
undoableEditHappened
in all listeners. It is unwise to call this method from one of its listeners.e
- edit to be postedpublic int getUpdateLevel()
public void beginUpdate()
protected CompoundEdit createCompoundEdit()
beginUpdate
. Exposed here for subclasses' use.CompoundEdit
objectpublic void endUpdate()
undoableEditHappened
in all listeners. It is unwise to call this method from one of its listeners.public String toString()
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/undo/UndoableEditSupport.html