custom config values in workflow UI?

After perusing through the various Splunk.* javascript libraries, I think the answer is "no" so as a workaround one can do the following and achieve the desired effect.

Add a ServerSideInclude module in your view

<module name="ServerSideInclude" layoutPanel="appHeader">
  <param name="src">include.html</param>
</module>

Then, in the include.html (which should reside in your apps appserver/static/ directory) you can include the following code which leverages internal splunk stuff that I found in various source files.

<%
import splunk.bundle as bundle

retDict = {}
try:
  thing = bundle.getConf('myapp', namespace="MyApp")
  for s in thing:
    retDict[s] = {}
    retDict[s].update(thing[s].items())
except splunk.ResourceNotFound:
  pass

%>

<div id='AppConfig'>
  <input type='hidden' name='AppUsername' value='${retDict['appliance']['username']}'>
  <input type='hidden' name='AppPassword' value='${retDict['appliance']['password']}'>
  <input type='hidden' name='AppHostname' value='${retDict['appliance']['hostname']}'>
  <input type='hidden' name='AppPort' value='${retDict['appliance']['port']}'>
</div>

Your app specific config file, in this case myapp.conf is located at local/myapp.conf and the contents of it are populated into the retDict variable.

Sample contents of local/myapp.conf

[appliance]
username = myuser
password = mypassword
hostname = my.host.org
port = 443

The end result of this is that you can get creative in your application.js file; being able to use the values that you save via setup.xml to your custom app config file.

Still interested to know if there is a better way to go about getting those custom configs.