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"""Tornado handlers for the tree view.
Authors:
* Brian Granger
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import os
from tornado import web
from ..base.handlers import IPythonHandler, notebook_path_regex, path_regex
from ..utils import url_path_join, path2url, url2path, url_escape, is_hidden
#-----------------------------------------------------------------------------
# Handlers
#-----------------------------------------------------------------------------
class TreeHandler(IPythonHandler):
"""Render the tree view, listing notebooks, clusters, etc."""
def generate_breadcrumbs(self, path):
breadcrumbs = [(url_escape(url_path_join(self.base_url, 'tree')), '')]
comps = path.split('/')
ncomps = len(comps)
for i in range(ncomps):
if comps[i]:
link = url_escape(url_path_join(self.base_url, 'tree', *comps[0:i+1]))
breadcrumbs.append((link, comps[i]))
return breadcrumbs
def generate_page_title(self, path):
comps = path.split('/')
if len(comps) > 3:
for i in range(len(comps)-2):
comps.pop(0)
page_title = url_path_join(*comps)
if page_title:
return page_title+'/'
else:
return 'Home'
@web.authenticated
def get(self, path='', name=None):
path = path.strip('/')
nbm = self.notebook_manager
if name is not None:
# is a notebook, redirect to notebook handler
url = url_escape(url_path_join(
self.base_url, 'notebooks', path, name
))
self.log.debug("Redirecting %s to %s", self.request.path, url)
self.redirect(url)
else:
if not nbm.path_exists(path=path):
# Directory is hidden or does not exist.
raise web.HTTPError(404)
elif nbm.is_hidden(path):
self.log.info("Refusing to serve hidden directory, via 404 Error")
raise web.HTTPError(404)
breadcrumbs = self.generate_breadcrumbs(path)
page_title = self.generate_page_title(path)
self.write(self.render_template('tree.html',
project=self.project_dir,
page_title=page_title,
notebook_path=path,
breadcrumbs=breadcrumbs
))
class TreeRedirectHandler(IPythonHandler):
"""Redirect a request to the corresponding tree URL"""
@web.authenticated
def get(self, path=''):
url = url_escape(url_path_join(
self.base_url, 'tree', path.strip('/')
))
self.log.debug("Redirecting %s to %s", self.request.path, url)
self.redirect(url)
#-----------------------------------------------------------------------------
# URL to handler mappings
#-----------------------------------------------------------------------------
default_handlers = [
(r"/tree%s" % notebook_path_regex, TreeHandler),
(r"/tree%s" % path_regex, TreeHandler),
(r"/tree", TreeHandler),
(r"/?", TreeRedirectHandler),
]
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