Dynamically generate a heading for Extension Docs API pages

chrome/common/extensions/docs/server2/template_data_source.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 logging
 
 from branch_utility import BranchUtility
 from docs_server_utils import FormatKey
 import compiled_file_system as compiled_fs
 from file_system import FileNotFoundError
 from third_party.handlebar import Handlebar
 import url_constants
 
 # Increment this if there are changes to the data stored about templates.
 _VERSION = 2
 
 EXTENSIONS_URL = '/chrome/extensions'
 
-def _MakeChannelDict(channel_name):
-  channel_dict = {
-    'channels': [{'name': name} for name in BranchUtility.GetAllBranchNames()],
+def _MakeChannelDict(channel_name, all_channels):
+  return {
+    'channels' : [
+      {
+        'name': channel['name'],
+        'version': channel['version'],
+        'path': channel['name'],
+        'isCurrent': channel['name'] == channel_name
+      } for channel in all_channels
+    ],
     'current': channel_name
   }
   for channel in channel_dict['channels']:
     if channel['name'] == channel_name:
       channel['isCurrent'] = True
   return channel_dict
 
 class TemplateDataSource(object):
   """Renders Handlebar templates, providing them with the context in which to
   render.
@@ skipping 14 matching lines @@
                  channel_name,
                  api_data_source_factory,
                  api_list_data_source_factory,
                  intro_data_source_factory,
                  samples_data_source_factory,
                  known_issues_data_source,
                  sidenav_data_source_factory,
                  cache_factory,
                  ref_resolver_factory,
                  public_template_path,
-                 private_template_path):
-      self._branch_info = _MakeChannelDict(channel_name)
+                 private_template_path,
+                 all_channels):
+      self._branch_info = _MakeChannelDict(channel_name, all_channels)
       self._api_data_source_factory = api_data_source_factory
       self._api_list_data_source_factory = api_list_data_source_factory
       self._intro_data_source_factory = intro_data_source_factory
       self._samples_data_source_factory = samples_data_source_factory
       self._known_issues_data_source = known_issues_data_source
       self._sidenav_data_source_factory = sidenav_data_source_factory
       self._cache = cache_factory.Create(self._CreateTemplate,
                                          compiled_fs.HANDLEBAR,
                                          version=_VERSION)
       self._ref_resolver = ref_resolver_factory.Create()
@@ skipping 83 matching lines @@
   def get(self, key):
     return self.GetTemplate(self._private_template_path, key)
 
   def GetTemplate(self, base_path, template_name):
     real_path = FormatKey(template_name)
     try:
       return self._cache.GetFromFile(base_path + '/' + real_path)
     except FileNotFoundError as e:
       logging.info(e)
       return None