Add refresh support to the console page.

handler.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import os.path
 import urllib
 
 from google.appengine.ext import deferred
 # F0401:  9,0: Unable to import 'webapp2'
 # pylint: disable=F0401
 import webapp2
-from google.appengine.ext.webapp import template
 
 import app
-
-def _clean_int(value, default):
-  """Convert a value to an int, or the default value if conversion fails."""
-  try:
-    return int(value)
-  except (TypeError, ValueError):
-    return default
+import base_page
+import utils
 
 
-# W0232: 23,0:MyRequestHandler: Class has no __init__ method
-# pylint: disable=W0232
-class MyRequestHandler(webapp2.RequestHandler):
-  """Base request handler with this application specific helpers."""
-
-  # E1101: 31,4:MyRequestHandler._render_template: Instance of
-  # 'MyRequestHandler' has no 'response' member
-  # pylint: disable=E1101
-  def _render_template(self, name, values):
-    """
-    Wrapper for template.render that updates response
-    and knows where to look for templates.
-    """
-    self.response.out.write(template.render(
-        os.path.join(os.path.dirname(__file__), 'templates', name),
-        values))
-
-
-# W0232: 42,0:PageAction: Class has no __init__ method
-# pylint: disable=W0232
-class PageAction(MyRequestHandler):
+class PageAction(base_page.BasePage):
 
   # W0221: 44,2:PageAction.get: Arguments number differs from overridden method
   # pylint: disable=W0221
   def get(self, localpath):
-    # E1101: 70,11:PageAction.get: Instance of 'PageAction' has no 'request'
-    # member
-    # pylint: disable=E1101
     if len(self.request.query_string) > 0:
-      # E1101: 47,11:PageAction.get: Instance of 'PageAction' has no 'request'
-      # member
-      # pylint: disable=E1101
-      localpath += '?' + self.request.query_string
+      # The reload arg, if present, must be stripped from the URL.
+      args = self.request.query_string.split('&')
+      args = [arg for arg in args if not arg.startswith('reload=')]
+      if args:
+        localpath += '?' + '&'.join(args)
     unquoted_localpath = urllib.unquote(localpath)
-    content = app.get_and_cache_page(unquoted_localpath)
-    if content is None:
-      # E1101: 78,6:PageAction.get: Instance of 'PageAction' has no 'error'
-      # member
-      # pylint: disable=E1101
+    page_data = app.get_and_cache_pagedata(unquoted_localpath)
+    if page_data.get('content') is None:
       self.error(404)  # file not found
       return
 
+    self.response.headers['Content-Type'] = app.path_to_mime_type(
+        unquoted_localpath)
+    template_values = self.InitializeTemplate()
+    if self.request.path.endswith('/console'):
+      template_values = self.InitializeTemplate()
+      template_values['body_class'] = page_data.get('body_class')
+      template_values['content'] = page_data.get('content')
+      template_values['offsite_base'] = page_data.get('offsite_base')
+      template_values['title'] = page_data.get('title')
+      if self.user:
+        reloadarg = utils.clean_int(self.request.get('reload'), -1)
+        if reloadarg != -1:
+          reloadarg = max(reloadarg, 30)
+          template_values['reloadarg'] = reloadarg
+      else:
+        # Make the Google Frontend capable of caching this request for 60
+        # seconds.
+        # TODO: Caching is not working yet.
+        self.response.headers['Cache-Control'] = 'public, max-age=60'
+        self.response.headers['Pragma'] = 'Public'
+      self.DisplayTemplate('base.html', template_values)
+      return
+
     # Make the Google Frontend capable of caching this request for 60 seconds.
     # TODO: Caching is not working yet.
-    # E1101: 83,4:PageAction.get: Instance of 'PageAction' has no 'response'
-    # member
-    # pylint: disable=E1101
     self.response.headers['Cache-Control'] = 'public, max-age=60'
-    # E1101: 83,4:PageAction.get: Instance of 'PageAction' has no 'response'
-    # member
-    # pylint: disable=E1101
     self.response.headers['Pragma'] = 'Public'
-    # E1101: 83,4:PageAction.get: Instance of 'PageAction' has no 'response'
-    # member
-    # pylint: disable=E1101
-    self.response.headers['Content-Type'] = app.path_to_mime_type(
-        unquoted_localpath)
-    self.response.out.write(content)
+    self.response.out.write(page_data.get('content'))
 
 
 
-class FetchPagesAction(MyRequestHandler):
+class FetchPagesAction(base_page.BasePage):
 
   # R0201: 93,2:FetchPagesAction.get: Method could be a function
   # pylint: disable=R0201
   def get(self):
     deferred.defer(app.fetch_pages)
 
 
-class MainAction(MyRequestHandler):
+class MainAction(base_page.BasePage):
 
   def get(self):
-    # E1101: 96,4:MainAction.get: Instance of 'MainAction' has no 'redirect'
-    # member
-    # pylint: disable=E1101
     self.redirect('/p/chromium/console')
 
 
 # Call initial bootstrap for the app module.
 app.bootstrap()
+base_page.bootstrap()
 
 # GAE will cache |application| across requests if we set it here.  See
 # http://code.google.com/appengine/docs/python/runtime.html#App_Caching for more
 # info.
 application = webapp2.WSGIApplication(
   [('/', MainAction),
    ('/p/(.*)', PageAction),
    ('/tasks/fetch_pages', FetchPagesAction)])