| # Copyright 2013 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 data_source_registry import CreateDataSources |
| from third_party.handlebar import Handlebar |
| from url_constants import GITHUB_BASE, EXTENSIONS_SAMPLES |
| |
| |
| class TemplateRenderer(object): |
| '''Renders templates with the server's available data sources. |
| ''' |
| |
| def __init__(self, server_instance): |
| self._server_instance = server_instance |
| |
| def Render(self, |
| template, |
| request, |
| data_sources=None, |
| additional_context=None): |
| '''Renders |template| using |request|. |
| |
| Specify |data_sources| to only include the DataSources with the given names |
| when rendering the template. |
| |
| Specify |additional_context| to inject additional template context when |
| rendering the template. |
| ''' |
| assert isinstance(template, Handlebar), type(template) |
| render_context = self._CreateDataSources(request) |
| if data_sources is not None: |
| render_context = dict((name, d) for name, d in render_context.iteritems() |
| if name in data_sources) |
| render_context.update({ |
| 'apps_samples_url': GITHUB_BASE, |
| 'base_path': self._server_instance.base_path, |
| 'extensions_samples_url': EXTENSIONS_SAMPLES, |
| 'static': self._server_instance.base_path + 'static', |
| }) |
| if additional_context: |
| render_context.update(additional_context) |
| render_data = template.Render(render_context) |
| return render_data.text, render_data.errors |
| |
| def _CreateDataSources(self, request): |
| server_instance = self._server_instance |
| data_sources = CreateDataSources(server_instance, request=request) |
| data_sources.update({ |
| 'api_list': server_instance.api_list_data_source_factory.Create(), |
| 'apis': server_instance.api_data_source_factory.Create(request), |
| 'samples': server_instance.samples_data_source_factory.Create(request), |
| }) |
| return data_sources |
