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Java Source | 1998-09-23 | 3.5 KB | 118 lines |
- package com.symantec.itools.vcafe.beans;
-
- import java.io.Serializable;
- import java.io.ObjectOutputStream;
- import java.io.ObjectInputStream;
- import java.io.IOException;
-
-
- /**
- * This is a utility class that can be used by customizers that implement
- * it's own OK/Cancel buttons. You can use an instance of this class as a
- * member field of your bean and delegate various work to it.
- */
-
- public class CustomOverrideSupport implements java.io.Serializable {
-
- /**
- * @param customizer The customizer.
- */
-
- public CustomOverrideSupport(Object customizer) {
- this.customizer = customizer;
- }
-
- /**
- * Add a CustomOverrideListener to the listener list.
- *
- * @param listener The CustomOverrideListener to be added
- */
-
- public synchronized void addCustomOverrideListener(CustomOverrideListener listener) {
- if (listeners == null) {
- listeners = new java.util.Vector();
- }
- listeners.addElement(listener);
- }
-
- /**
- * Remove a CustomOverrideListener from the listener list.
- *
- * @param listener The CustomOverrideListener to be removed
- */
-
- public synchronized void removeCustomOverrideListener(CustomOverrideListener listener) {
- if (listeners == null) {
- return;
- }
- listeners.removeElement(listener);
- }
-
- /**
- * Report a bound property update to any registered listeners.
- * No event is fired if old and new are equal and non-null.
- *
- * @param state CustomOverrideEvent.CUSTOMIZER_OK or
- * CustomOverrideEvent.CUSTOMIZER_CANCEL
- */
- public void fireCustomOverride(int state) {
- java.util.Vector targets;
- synchronized (this) {
- if (listeners == null) {
- return;
- }
- targets = (java.util.Vector) listeners.clone();
- }
- CustomOverrideEvent evt = new CustomOverrideEvent(customizer, state);
-
- if (state == CustomOverrideEvent.CUSTOMIZER_OK) {
- for (int i = 0; i < targets.size(); i++) {
- CustomOverrideListener target = (CustomOverrideListener)targets.elementAt(i);
- target.okPressed(evt);
- }
- } else if (state == CustomOverrideEvent.CUSTOMIZER_CANCEL) {
- for (int i = 0; i < targets.size(); i++) {
- CustomOverrideListener target = (CustomOverrideListener)targets.elementAt(i);
- target.cancelPressed(evt);
- }
- }
- }
-
-
- private void writeObject(ObjectOutputStream s) throws IOException {
- s.defaultWriteObject();
-
- java.util.Vector v = null;
- synchronized (this) {
- if (listeners != null) {
- v = (java.util.Vector) listeners.clone();
- }
- }
-
- if (v != null) {
- for(int i = 0; i < v.size(); i++) {
- CustomOverrideListener l = (CustomOverrideListener)v.elementAt(i);
- if (l instanceof Serializable) {
- s.writeObject(l);
- }
- }
- }
- s.writeObject(null);
- }
-
-
- private void readObject(ObjectInputStream s) throws ClassNotFoundException, IOException {
- s.defaultReadObject();
-
- Object listenerOrNull;
- while(null != (listenerOrNull = s.readObject())) {
- addCustomOverrideListener((CustomOverrideListener)listenerOrNull);
- }
- }
-
- transient private java.util.Vector listeners;
- private Object customizer;
- private int customzierChangeSupportSerializedDataVersion = 1;
- }
-
-