javax.swing
Class JComponent.ReadObjectCallback

java.lang.Object
  javax.swing.JComponent.ReadObjectCallback

All Implemented Interfaces:

ObjectInputValidation

Enclosing class:

JComponent

private class JComponent.ReadObjectCallback

extends Object

implements ObjectInputValidation

This object is the ObjectInputStream callback that's called after a complete graph of objects (including at least one JComponent) has been read. It sets the UI property of each Swing component that was read to the current default with updateUI.

As each component is read in we keep track of the current set of root components here, in the roots vector. Note that there's only one ReadObjectCallback per ObjectInputStream, they're stored in the static readObjectCallbacks hashtable.

See Also:

ObjectInputStream.registerValidation(java.io.ObjectInputValidation, int), SwingUtilities.updateComponentTreeUI(java.awt.Component)

Field Summary

private ObjectInputStream	inputStream
private Vector	roots

Constructor Summary

(package private)

JComponent.ReadObjectCallback(ObjectInputStream s)

Method Summary

private void	registerComponent(JComponent c) If c isn't a descendant of a component we've already seen, then add it to the roots Vector.
void	validateObject() This is the method that's called after the entire graph of objects has been read in.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

roots

private final Vector roots

inputStream

private final ObjectInputStream inputStream

Constructor Detail

JComponent.ReadObjectCallback

JComponent.ReadObjectCallback(ObjectInputStream s)
                        throws Exception

Method Detail

validateObject

public void validateObject()
                    throws InvalidObjectException

This is the method that's called after the entire graph of objects has been read in. It initializes the UI property of all of the copmonents with SwingUtilities.updateComponentTreeUI.

Specified by:

validateObject in interface ObjectInputValidation

Throws:

InvalidObjectException - If the object cannot validate itself.

registerComponent

private void registerComponent(JComponent c)

If c isn't a descendant of a component we've already seen, then add it to the roots Vector.

Parameters:

c - the JComponent to add