[RCD] Button from plugin with javascript only action

[[ I'm happy to work with a consultant to answer this and other
questions, as per my previous email. However, Thomas suggested I send
some questions to the dev list, so I'm doing that. ]]

I see when you define a button from a plugin, you can give it a command:

   $this->add_button(array(
     'command' => 'plugin.markasjunk',
     'imagepas' => $skin_path.'/junk_pas.png',
     'imageact' => $skin_path.'/junk_act.png',
     'title' => 'markasjunk.buttontitle'), 'toolbar');
 }

And register a PHP callback to handle that command:

 $this->register_action('plugin.markasjunk', array($this,  

'request_action'));

I want to define some buttons that execute javascript in the browser,
instead of creating HTTP request to the server to run a PHP callback.

Is there a way that I can register a command name (for example
'plugin.move_to_next_message') along with javascript code to be run
for that command? I could always modify program/js/app.js to add a
new command, but if there is a hook to do this, I'd prefer to do that.

Thanks!

David Harris DRH Internet Inc. 972-572-0900

List info: http://lists.roundcube.net/dev/