# copyright 2003-2014 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""breadcrumbs components definition for CubicWeb web client"""
__docformat__ = "restructuredtext en"
from cubicweb import _
from warnings import warn
from six import text_type
from logilab.mtconverter import xml_escape
from cubicweb import tags, uilib
from cubicweb.entity import Entity
from cubicweb.predicates import (is_instance, one_line_rset, adaptable,
one_etype_rset, multi_lines_rset, any_rset,
match_form_params)
from cubicweb.view import EntityView, EntityAdapter
from cubicweb.web.views import basecomponents
# don't use AnyEntity since this may cause bug with isinstance() due to reloading
class IBreadCrumbsAdapter(EntityAdapter):
"""adapters for entities which can be"located" on some path to display in
the web ui
"""
__regid__ = 'IBreadCrumbs'
__select__ = is_instance('Any', accept_none=False)
[docs] def parent_entity(self):
itree = self.entity.cw_adapt_to('ITree')
if itree is not None:
return itree.parent()
return None
[docs] def breadcrumbs(self, view=None, recurs=None):
"""return a list containing some:
* tuple (url, label)
* entity
* simple label string
defining path from a root to the current view
the main view is given as argument so breadcrumbs may vary according to
displayed view (may be None). When recursing on a parent entity, the
`recurs` argument should be a set of already traversed nodes (infinite
loop safety belt).
"""
parent = self.parent_entity()
if parent is not None:
if recurs:
_recurs = recurs
else:
_recurs = set()
if _recurs and parent.eid in _recurs:
self.error('cycle in breadcrumbs for entity %s' % self.entity)
return []
_recurs.add(parent.eid)
adapter = parent.cw_adapt_to('IBreadCrumbs')
path = adapter.breadcrumbs(view, _recurs) + [self.entity]
else:
path = [self.entity]
if not recurs:
if view is None:
if 'vtitle' in self._cw.form:
# embeding for instance
path.append( self._cw.form['vtitle'] )
elif view.__regid__ != 'primary' and hasattr(view, 'title'):
path.append( self._cw._(view.title) )
return path
class BreadCrumbEntityVComponent(basecomponents.HeaderComponent):
__regid__ = 'breadcrumbs'
__select__ = (basecomponents.HeaderComponent.__select__
& one_line_rset() & adaptable('IBreadCrumbs'))
order = basecomponents.ApplicationName.order + 1
context = basecomponents.ApplicationName.context
separator = u' > '
link_template = u'<a href="%s">%s</a>'
first_separator = True
# XXX support kwargs for compat with other components which gets the view as
# argument
def render(self, w, **kwargs):
try:
entity = self.cw_extra_kwargs['entity']
except KeyError:
entity = self.cw_rset.get_entity(0, 0)
adapter = entity.cw_adapt_to('IBreadCrumbs')
view = self.cw_extra_kwargs.get('view')
path = adapter.breadcrumbs(view)
if path:
self.open_breadcrumbs(w)
self.render_breadcrumbs(w, entity, path)
self.close_breadcrumbs(w)
def open_breadcrumbs(self, w):
w(u'<span id="breadcrumbs" class="pathbar">')
if self.first_separator:
w(self.separator)
def close_breadcrumbs(self, w):
w(u'</span>')
def render_root(self, w, contextentity, path):
root = path.pop(0)
if isinstance(root, Entity):
w(self.link_template % (self._cw.build_url(root.__regid__),
root.dc_type('plural')))
w(self.separator)
self.wpath_part(w, root, contextentity, not path)
def render_breadcrumbs(self, w, contextentity, path):
self.render_root(w, contextentity, path)
for i, parent in enumerate(path):
w(self.separator)
w(u"\n")
self.wpath_part(w, parent, contextentity, i == len(path) - 1)
def wpath_part(self, w, part, contextentity, last=False): # XXX deprecates last argument?
if isinstance(part, Entity):
w(part.view('breadcrumbs'))
elif isinstance(part, tuple):
url, title = part
textsize = self._cw.property_value('navigation.short-line-size')
w(self.link_template % (
xml_escape(url), xml_escape(uilib.cut(title, textsize))))
else:
textsize = self._cw.property_value('navigation.short-line-size')
w(xml_escape(uilib.cut(text_type(part), textsize)))
class BreadCrumbETypeVComponent(BreadCrumbEntityVComponent):
__select__ = (basecomponents.HeaderComponent.__select__
& multi_lines_rset() & one_etype_rset()
& adaptable('IBreadCrumbs'))
def render_breadcrumbs(self, w, contextentity, path):
# XXX hack: only display etype name or first non entity path part
root = path.pop(0)
if isinstance(root, Entity):
w(u'<a href="%s">%s</a>' % (self._cw.build_url(root.__regid__),
root.dc_type('plural')))
else:
self.wpath_part(w, root, contextentity, not path)
class BreadCrumbAnyRSetVComponent(BreadCrumbEntityVComponent):
__select__ = basecomponents.HeaderComponent.__select__ & any_rset()
# XXX support kwargs for compat with other components which gets the view as
# argument
def render(self, w, **kwargs):
self.open_breadcrumbs(w)
w(self._cw._('search'))
self.close_breadcrumbs(w)
class BreadCrumbLinkToVComponent(BreadCrumbEntityVComponent):
__select__ = basecomponents.HeaderComponent.__select__ & match_form_params('__linkto')
def render(self, w, **kwargs):
eid = self._cw.list_form_param('__linkto')[0].split(':')[1]
entity = self._cw.entity_from_eid(eid)
ecmp = self._cw.vreg[self.__registry__].select(
self.__regid__, self._cw, entity=entity, **kwargs)
ecmp.render(w, **kwargs)
class BreadCrumbView(EntityView):
__regid__ = 'breadcrumbs'
def cell_call(self, row, col, **kwargs):
entity = self.cw_rset.get_entity(row, col)
desc = uilib.cut(entity.dc_description(), 50)
# NOTE remember camember: tags.a autoescapes
self.w(tags.a(entity.view('breadcrumbtext'),
href=entity.absolute_url(), title=desc))
class BreadCrumbTextView(EntityView):
__regid__ = 'breadcrumbtext'
def cell_call(self, row, col, **kwargs):
entity = self.cw_rset.get_entity(row, col)
textsize = self._cw.property_value('navigation.short-line-size')
self.w(uilib.cut(entity.dc_title(), textsize))
