Theme setting properties for child of control - xpages

Question

I know Button.command is the theme ID for normal buttons and I can set properties for it. And I know eventHandlers don't have a theme ID by default. So to set properties of an eventHandler centrally, I've historically added what I've had this in my theme:
<control>
<name>Button.EventHandler</name>
<property mode="override">
<name>onStart</name>
<value>loading();</value>
</property>
<property mode="override">
<name>onError</name>
<value>stoploading();</value>
</property>
<property mode="override">
<name>onComplete</name>
<value>stoploading();</value>
</property>
</control>
But I then need to add the themeId Button.EventHandler to each eventHandler.
Is there a way to set properties in a theme for children, so set properties on all eventHandlers that are children of Button.Command controls?

Answer 1

I cannot help You with solving Your theme problem, but perhaps I can give You solution to general problem.
I assume that what You try to achieve is to attach some nice loader to all partial refresh events. This can be done on a lower level by using dojo.subscribe API: http://dojotoolkit.org/reference-guide/1.6/dojo/subscribe.html
Example code:
// we need to activate io events
dojo.config.ioPublish = true
dojo.subscribe("/dojo/io/send", function(/*dojo.Deferred*/dfd){
loading();
});
dojo.subscribe("/dojo/io/stop", function(){
stoploading();
});
This code has to be run on application start (onClientLoad event will do just fine)