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JavaTM 2 Platform Std. Ed. v1.4.2 |
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java.lang.Objectjavax.swing.undo.UndoableEditSupport
A support class used for managing UndoableEdit listeners.
| Field Summary | |
protected CompoundEdit |
compoundEdit
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protected Vector |
listeners
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protected Object |
realSource
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protected int |
updateLevel
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| Constructor Summary | |
UndoableEditSupport()
Constructs an UndoableEditSupport object. |
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UndoableEditSupport(Object r)
Constructs an UndoableEditSupport object. |
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| Method Summary | |
protected void |
_postEdit(UndoableEdit e)
Called only from postEdit and endUpdate. |
void |
addUndoableEditListener(UndoableEditListener l)
Registers an UndoableEditListener. |
void |
beginUpdate()
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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 UndoableEditListeners added
to this UndoableEditSupport with addUndoableEditListener(). |
int |
getUpdateLevel()
Returns the update level value. |
void |
postEdit(UndoableEdit e)
DEADLOCK WARNING: Calling this method may call undoableEditHappened in all listeners. |
void |
removeUndoableEditListener(UndoableEditListener l)
Removes an UndoableEditListener. |
String |
toString()
Returns a string that displays and identifies this object's properties. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
protected int updateLevel
protected CompoundEdit compoundEdit
protected Vector listeners
protected Object realSource
| Constructor Detail |
public UndoableEditSupport()
UndoableEditSupport object.
public UndoableEditSupport(Object r)
UndoableEditSupport object.
r - an Object| Method Detail |
public void addUndoableEditListener(UndoableEditListener l)
UndoableEditListener.
The listener is notified whenever an edit occurs which can be undone.
l - an UndoableEditListener objectremoveUndoableEditListener(javax.swing.event.UndoableEditListener)public void removeUndoableEditListener(UndoableEditListener l)
UndoableEditListener.
l - the UndoableEditListener object to be removedaddUndoableEditListener(javax.swing.event.UndoableEditListener)public UndoableEditListener[] getUndoableEditListeners()
UndoableEditListeners added
to this UndoableEditSupport with addUndoableEditListener().
UndoableEditListeners 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.
public void postEdit(UndoableEdit e)
undoableEditHappened in all listeners.
It is unwise to call this method from one of its listeners.
public int getUpdateLevel()
public void beginUpdate()
protected CompoundEdit createCompoundEdit()
beginUpdate.
Exposed here for subclasses' use.
public void endUpdate()
undoableEditHappened in all listeners.
It is unwise to call this method from one of its listeners.
public String toString()
toString in class ObjectString representation of this object
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JavaTM 2 Platform Std. Ed. v1.4.2 |
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Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.