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# 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.
from third_party.handlebar import Handlebar
EXTENSIONS_URL = '/chrome/extensions'
class TemplateDataSource(object):
"""This class fetches and compiles templates using the fetcher passed in with
|cache_builder|.
"""
def __init__(self, branch, cache_builder, base_paths):
self._cache = cache_builder.build(self._LoadTemplate)
self._base_paths = base_paths
self._branch_info = self._MakeBranchDict(branch)
def _MakeBranchDict(self, branch):
return {
'showWarning': branch != 'stable',
'branches': [
{ 'name': 'Stable', 'path': EXTENSIONS_URL + '/stable' },
{ 'name': 'Dev', 'path': EXTENSIONS_URL + '/dev' },
{ 'name': 'Beta', 'path': EXTENSIONS_URL + '/beta' },
{ 'name': 'Trunk', 'path': EXTENSIONS_URL + '/trunk' }
],
'current': branch
}
def _LoadTemplate(self, template):
return Handlebar(template)
def Render(self, template_name, context):
"""This method will render a template named |template_name|, fetching all
the partial templates needed from |self._cache|. Partials are retrieved
from the TemplateDataSource with the |get| method.
"""
template = self.get(template_name)
if not template:
return ''
# TODO error handling
return template.render({
'api': context,
'branchInfo': self._branch_info,
'partials': self
}).text
def __getitem__(self, key):
return self.get(key)
def get(self, key):
index = key.rfind('.html')
if index > 0:
key = key[:index]
real_path = key + '.html'
for base_path in self._base_paths:
try:
return self._cache.get(base_path + '/' + real_path)
except:
pass
return None
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