Changing Seam component properties via Remoting

[dkane]

Hello

I have a Java class that is responsible for some graphics in my web-application. I have turned this class into Seam component. Actually this is session-scoped graphic provider for a4j:mediaOutput element (image) . This works well.

There is some plain JavaScript code on web-page that changes properties of this component. These changes are implemented via Seam Remoting.

The problem is following : properties changed in backing stateful bean via Remoting does not change accordingly in the context instance of the component. I guess I need some explicit outjection back to context after Remoting call, but don't know how to program that. Otherwise, any consequent non-remoting invocation of the component turns backing bean into previous state .

Thanks in advance for explanations.

[shane.bryzak]

Seam's bijection features should work just the same within a remoting call as they do with a faces request. Can you please post some code showing what you're trying to do?

[dkane]

There is a lot of code, so only key points :

Seam Component interface :

@Local
public interface MapImageA4J
{
 public void setXc(int xc);
 public int getXc();
 public void setYc(int yc);
 public int getYc();
 public void setWidth(int width);
 public int getWidth();
 public void setHeight(int height);
 public int getHeight();
 public void setScale(int scale);
 public int getScale();
 public void drawImage(OutputStream out, Object data) throws Exception;

 @WebRemote
 public void zoom(double xPercent, double yPercent, double widthPercent, double heightPercent);

 // this method is being called via Remoting and changes values of properties xc, yc, scale, etc.


 public void left();
 public void right();
 public void up();
 public void down();
 public void zoomIn();
 public void zoomOut();
 public void destroy();
}

Web - page fragment :

 <s:link action="#{map.left}" value="left"/><br/>
 <s:link action="#{map.right}" value="right"/><br/>
 <s:link action="#{map.up}" value="top"/><br/>
 <s:link action="#{map.down}" value="bottom"/><br/>
 <s:link action="#{map.zoomIn}" value="zoom in"/><br/>
 <s:link action="#{map.zoomOut}" value="zoom out"/><br/>

 <!-- links above works fine and image is being rerendered -->

 <a4j:mediaOutput id="a4map"
 element="img"
 cacheable="false"
 session="true"
 createContent="#{map.drawImage}"
 mimeType="image/gif"
 onmousedown="mapStartZoom(event)"
 onmousemove="mapMouseMove(event)"
 onmouseup="mapMouseUp(event)"
 />

And, the problem point : end of "onmouseup" handler (Javascript):

function mapStopZoom(evt)
{
 //... some calculation ...

Seam.Component.getInstance("map").zoom(xLeftPercent,yTopPercent,widthPercent,heightPercent);
}

zoom method is being called via Remoting, but when I click e.g. "up" or "down" after zoom results falls back.

I've raised the similar issue in ajax4jsf forum, because I beleive the problem is impossibility to rerender mediaOutput right after remoting call.
So far have not found a way to rerender a4j object from plain JavaScript.

http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4066643#4066643