text: """
  Provides factory methods to assemble the Galaxy web application
  """
  
  import logging, atexit
  import os, os.path, sys
  
  from inspect import isclass
  
  from paste.request import parse_formvars
  from paste.util import import_string
  from paste import httpexceptions
  from galaxy.util import asbool
  import pkg_resources
  
  log = logging.getLogger( __name__ )
  
  import config
  import galaxy.webapps.demo_sequencer.framework
  
  def add_ui_controllers( webapp, app ):
      """
      Search for controllers in the 'galaxy.webapps.demo_sequencer.controllers'
      directory and add them to the webapp.
      """
      from galaxy.web.base.controller import BaseUIController
      from galaxy.web.base.controller import ControllerUnavailable
      import galaxy.webapps.demo_sequencer.controllers
      controller_dir = galaxy.webapps.demo_sequencer.controllers.__path__[0]
      for fname in os.listdir( controller_dir ):
          if not fname.startswith( "_" ) and fname.endswith( ".py" ):
              name = fname[:-3]
              module_name = "galaxy.webapps.demo_sequencer.controllers." + name
              module = __import__( module_name )
              for comp in module_name.split( "." )[1:]:
                  module = getattr( module, comp )
              # Look for a controller inside the modules
              for key in dir( module ):
                  T = getattr( module, key )
                  if isclass( T ) and T is not BaseUIController and issubclass( T, BaseUIController ):
                      webapp.add_ui_controller( name, T( app ) )
  
  def app_factory( global_conf, **kwargs ):
      """Return a wsgi application serving the root object"""
      # Create the Galaxy application unless passed in
      if 'app' in kwargs:
          app = kwargs.pop( 'app' )
      else:
          try:
              from galaxy.webapps.demo_sequencer.app import UniverseApplication
              app = UniverseApplication( global_conf = global_conf, **kwargs )
          except:
              import traceback, sys
              traceback.print_exc()
              sys.exit( 1 )
      atexit.register( app.shutdown )
      # Create the universe WSGI application
      webapp = galaxy.webapps.demo_sequencer.framework.WebApplication( app, session_cookie='galaxydemo_sequencersession', name="demo_sequencer" )
      add_ui_controllers( webapp, app )
      # These two routes handle our simple needs at the moment
      webapp.add_route( '/:controller/:action', action='index' )
      webapp.add_route( '/:action', controller='common', action='index' )
      webapp.finalize_config()
      # Wrap the webapp in some useful middleware
      if kwargs.get( 'middleware', True ):
          webapp = wrap_in_middleware( webapp, global_conf, **kwargs )
      if kwargs.get( 'static_enabled', True ):
          webapp = wrap_in_static( webapp, global_conf, **kwargs )
      # Return
      return webapp
      
  def wrap_in_middleware( app, global_conf, **local_conf ):
      """Based on the configuration wrap `app` in a set of common and useful middleware."""
      # Merge the global and local configurations
      conf = global_conf.copy()
      conf.update(local_conf)
      debug = asbool( conf.get( 'debug', False ) )
      # First put into place httpexceptions, which must be most closely
      # wrapped around the application (it can interact poorly with
      # other middleware):
      app = httpexceptions.make_middleware( app, conf )
      log.debug( "Enabling 'httpexceptions' middleware" )
      # The recursive middleware allows for including requests in other 
      # requests or forwarding of requests, all on the server side.
      if asbool(conf.get('use_recursive', True)):
          from paste import recursive
          app = recursive.RecursiveMiddleware( app, conf )
          log.debug( "Enabling 'recursive' middleware" )
      # Various debug middleware that can only be turned on if the debug
      # flag is set, either because they are insecure or greatly hurt
      # performance
      if debug:
          # Middleware to check for WSGI compliance
          if asbool( conf.get( 'use_lint', True ) ):
              from paste import lint
              app = lint.make_middleware( app, conf )
              log.debug( "Enabling 'lint' middleware" )
          # Middleware to run the python profiler on each request
          if asbool( conf.get( 'use_profile', False ) ):
              import profile
              app = profile.ProfileMiddleware( app, conf )
              log.debug( "Enabling 'profile' middleware" )
          # Middleware that intercepts print statements and shows them on the
          # returned page
          if asbool( conf.get( 'use_printdebug', True ) ):
              from paste.debug import prints
              app = prints.PrintDebugMiddleware( app, conf )
              log.debug( "Enabling 'print debug' middleware" )
      if debug and asbool( conf.get( 'use_interactive', False ) ):
          # Interactive exception debugging, scary dangerous if publicly
          # accessible, if not enabled we'll use the regular error printing
          # middleware.
          pkg_resources.require( "WebError" )
          from weberror import evalexception
          app = evalexception.EvalException( app, conf,
                                             templating_formatters=build_template_error_formatters() )
          log.debug( "Enabling 'eval exceptions' middleware" )
      else:
          # Not in interactive debug mode, just use the regular error middleware
          from paste.exceptions import errormiddleware
          app = errormiddleware.ErrorMiddleware( app, conf )
          log.debug( "Enabling 'error' middleware" )
      # Transaction logging (apache access.log style)
      if asbool( conf.get( 'use_translogger', True ) ):
          from paste.translogger import TransLogger
          app = TransLogger( app )
          log.debug( "Enabling 'trans logger' middleware" )
      # X-Forwarded-Host handling
      from galaxy.web.framework.middleware.xforwardedhost import XForwardedHostMiddleware
      app = XForwardedHostMiddleware( app )
      log.debug( "Enabling 'x-forwarded-host' middleware" )
      return app
      
  def wrap_in_static( app, global_conf, **local_conf ):
      from paste.urlmap import URLMap
      from galaxy.web.framework.middleware.static import CacheableStaticURLParser as Static
      urlmap = URLMap()
      # Merge the global and local configurations
      conf = global_conf.copy()
      conf.update(local_conf)
      # Get cache time in seconds
      cache_time = conf.get( "static_cache_time", None )
      if cache_time is not None:
          cache_time = int( cache_time )
      # Send to dynamic app by default
      urlmap["/"] = app
      # Define static mappings from config
      urlmap["/static"] = Static( conf.get( "static_dir" ), cache_time )
      urlmap["/images"] = Static( conf.get( "static_images_dir" ), cache_time )
      urlmap["/static/scripts"] = Static( conf.get( "static_scripts_dir" ), cache_time )
      urlmap["/static/style"] = Static( conf.get( "static_style_dir" ), cache_time )
      urlmap["/favicon.ico"] = Static( conf.get( "static_favicon_dir" ), cache_time )
      # URL mapper becomes the root webapp
      return urlmap
      
  def build_template_error_formatters():
      """
      Build a list of template error formatters for WebError. When an error
      occurs, WebError pass the exception to each function in this list until
      one returns a value, which will be displayed on the error page.
      """
      formatters = []
      # Formatter for mako
      import mako.exceptions
      def mako_html_data( exc_value ):
          if isinstance( exc_value, ( mako.exceptions.CompileException, mako.exceptions.SyntaxException ) ):
              return mako.exceptions.html_error_template().render( full=False, css=False )
          if isinstance( exc_value, AttributeError ) and exc_value.args[0].startswith( "'Undefined' object has no attribute" ):
              return mako.exceptions.html_error_template().render( full=False, css=False )
      formatters.append( mako_html_data )
      return formatters
  