org.xmlBlaster.client
Class JavascriptCallback

java.lang.Object
  org.xmlBlaster.client.JavascriptCallback

All Implemented Interfaces:

I_Callback

public class JavascriptCallback
extends java.lang.Object
implements I_Callback

Forwards callback messages to Javascript code.

We use this dispatcher for example in the SVG example xmlBlaster/demo/javaclients/svg/rhino/chessRhino.svg.

Author:

Michele Laghi.

See Also:

http://xml.apache.org/batik

Constructor Summary

JavascriptCallback(org.apache.batik.script.rhino.WindowWrapper javascriptWindow)
This constructor is called from Javascript within a SVG document:

Method Summary

void	setElementValue(org.w3c.dom.Element ele, java.lang.String value)
java.lang.String	update(java.lang.String cbSessionId, UpdateKey updateKey, byte[] content, UpdateQos updateQos) This is the callback method invoked from xmlBlaster delivering us a new asynchronous message.

Methods inherited from class java.lang.Object

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

Constructor Detail

JavascriptCallback

public JavascriptCallback(org.apache.batik.script.rhino.WindowWrapper javascriptWindow)

This constructor is called from Javascript within a SVG document:

 ... // other Javascript code with Rhino live connect
 xmlBlaster.connect(connectQos, new JavascriptCallback(this));
 

where this == window (the global object in SVG and HTML browsers) and window is of type WindowWrapper. The problem is that WindowWrapper has no method to retrieve the Javascript context like SVGCanvas or UpdateManager, so we get this via the static method getCurrentContext().

See Also:

http://xml.apache.org/batik

Method Detail

setElementValue

public void setElementValue(org.w3c.dom.Element ele,
                            java.lang.String value)

update

public java.lang.String update(java.lang.String cbSessionId,
                               UpdateKey updateKey,
                               byte[] content,
                               UpdateQos updateQos)
                        throws XmlBlasterException

This is the callback method invoked from xmlBlaster delivering us a new asynchronous message.

Specified by:

update in interface I_Callback

Parameters:

cbSessionId - The session ID specified by the client which registered the callback

updateKey - The arrived key

content - The arrived message content

qos - Quality of Service of the MsgUnit

Throws:

XmlBlasterException

See Also:

I_Callback.update(String, UpdateKey, byte[], org.xmlBlaster.client.qos.UpdateQos)