| Package | Description | 
|---|---|
| javax.swing.event | Provides for events fired by Swing components. | 
| javax.swing.text | Provides classes and interfaces that deal with editable
and noneditable text components. | 
| javax.swing.text.html | Provides the class  HTMLEditorKitand supporting classes
for creating HTML text editors. | 
| javax.swing.undo | Allows developers to provide support for undo/redo
in applications such as text editors. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | UndoableEditListener. undoableEditHappened(UndoableEditEvent e)An undoable edit happened | 
| Modifier and Type | Method and Description | 
|---|---|
| protected void | AbstractDocument. fireUndoableEditUpdate(UndoableEditEvent e)Notifies all listeners that have registered interest for
 notification on this event type. | 
| Modifier and Type | Method and Description | 
|---|---|
| protected void | HTMLDocument. fireUndoableEditUpdate(UndoableEditEvent e)Notifies all listeners that have registered interest for
 notification on this event type. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | UndoManager. undoableEditHappened(UndoableEditEvent e)An  UndoableEditListenermethod. | 
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