84 * Returns an array of all the <code>UndoableEditListener</code>s added
85 * to this UndoableEditSupport with addUndoableEditListener().
86 *
87 * @return all of the <code>UndoableEditListener</code>s added or an empty
88 * array if no listeners have been added
89 * @since 1.4
90 */
91 public synchronized UndoableEditListener[] getUndoableEditListeners() {
92 return listeners.toArray(new UndoableEditListener[0]);
93 }
94
95 /**
96 * Called only from <code>postEdit</code> and <code>endUpdate</code>. Calls
97 * <code>undoableEditHappened</code> in all listeners. No synchronization
98 * is performed here, since the two calling methods are synchronized.
99 *
100 * @param e edit to be verified
101 */
102 protected void _postEdit(UndoableEdit e) {
103 UndoableEditEvent ev = new UndoableEditEvent(realSource, e);
104 Enumeration cursor = ((Vector)listeners.clone()).elements();
105 while (cursor.hasMoreElements()) {
106 ((UndoableEditListener)cursor.nextElement()).
107 undoableEditHappened(ev);
108 }
109 }
110
111 /**
112 * DEADLOCK WARNING: Calling this method may call
113 * <code>undoableEditHappened</code> in all listeners.
114 * It is unwise to call this method from one of its listeners.
115 *
116 * @param e edit to be posted
117 */
118 public synchronized void postEdit(UndoableEdit e) {
119 if (updateLevel == 0) {
120 _postEdit(e);
121 } else {
122 // PENDING(rjrjr) Throw an exception if this fails?
123 compoundEdit.addEdit(e);
124 }
125 }
126
127 /**
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84 * Returns an array of all the <code>UndoableEditListener</code>s added
85 * to this UndoableEditSupport with addUndoableEditListener().
86 *
87 * @return all of the <code>UndoableEditListener</code>s added or an empty
88 * array if no listeners have been added
89 * @since 1.4
90 */
91 public synchronized UndoableEditListener[] getUndoableEditListeners() {
92 return listeners.toArray(new UndoableEditListener[0]);
93 }
94
95 /**
96 * Called only from <code>postEdit</code> and <code>endUpdate</code>. Calls
97 * <code>undoableEditHappened</code> in all listeners. No synchronization
98 * is performed here, since the two calling methods are synchronized.
99 *
100 * @param e edit to be verified
101 */
102 protected void _postEdit(UndoableEdit e) {
103 UndoableEditEvent ev = new UndoableEditEvent(realSource, e);
104 @SuppressWarnings("unchecked")
105 Enumeration<UndoableEditListener> cursor =
106 ((Vector<UndoableEditListener>)listeners.clone()).elements();
107 while (cursor.hasMoreElements()) {
108 cursor.nextElement().undoableEditHappened(ev);
109 }
110 }
111
112 /**
113 * DEADLOCK WARNING: Calling this method may call
114 * <code>undoableEditHappened</code> in all listeners.
115 * It is unwise to call this method from one of its listeners.
116 *
117 * @param e edit to be posted
118 */
119 public synchronized void postEdit(UndoableEdit e) {
120 if (updateLevel == 0) {
121 _postEdit(e);
122 } else {
123 // PENDING(rjrjr) Throw an exception if this fails?
124 compoundEdit.addEdit(e);
125 }
126 }
127
128 /**
|