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# -*- encoding: utf-8 -*-
#
# Copyright 2012 New Dream Network, LLC (DreamHost)
#
# Author: Doug Hellmann <doug.hellmann@dreamhost.com>
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from sphinx import addnodes
def html_page_context(app, pagename, templatename, context, doctree):
"""Event handler for the html-page-context signal.
Modifies the context directly.
- Replaces the 'toc' value created by the HTML builder with one
that shows all document titles and the local table of contents.
- Sets display_toc to True so the table of contents is always
displayed, even on empty pages.
- Replaces the 'toctree' function with one that uses the entire
document structure, ignores the maxdepth argument, and uses
only prune and collapse.
"""
rendered_toc = get_rendered_toctree(app.builder, pagename)
context['toc'] = rendered_toc
context['display_toc'] = True # force toctree to display
# Commented out the following on Sept 5, 2015 (sonofeft)
# On ReadTheDocs it was causing:
# "TypeError: <function make_toctree at 0x7f200cb11b90> is not JSON serializable"
#def make_toctree(collapse=True):
# return get_rendered_toctree(app.builder,
# pagename,
# prune=False,
# collapse=collapse,
# )
#context['toctree'] = make_toctree
def get_rendered_toctree(builder, docname, prune=False, collapse=True):
"""Build the toctree relative to the named document,
with the given parameters, and then return the rendered
HTML fragment.
"""
fulltoc = build_full_toctree(builder,
docname,
prune=prune,
collapse=collapse,
)
rendered_toc = builder.render_partial(fulltoc)['fragment']
return rendered_toc
def build_full_toctree(builder, docname, prune, collapse):
"""Return a single toctree starting from docname containing all
sub-document doctrees.
"""
env = builder.env
doctree = env.get_doctree(env.config.master_doc)
toctrees = []
for toctreenode in doctree.traverse(addnodes.toctree):
toctree = env.resolve_toctree(docname, builder, toctreenode,
collapse=collapse,
prune=prune,
)
toctrees.append(toctree)
if not toctrees:
return None
result = toctrees[0]
for toctree in toctrees[1:]:
if toctree:
result.extend(toctree.children)
env.resolve_references(result, docname, builder)
return result
def setup(app):
app.connect('html-page-context', html_page_context)
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