"""the facets box and some basic facets
:organization: Logilab
:copyright: 2008-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
from simplejson import dumps
from logilab.mtconverter import xml_escape
from cubicweb.vregistry import objectify_selector
from cubicweb.selectors import (non_final_entity, two_lines_rset,
match_context_prop, yes, relation_possible)
from cubicweb.web.box import BoxTemplate
from cubicweb.web.facet import (AbstractFacet, FacetStringWidget, RelationFacet,
prepare_facets_rqlst, filter_hiddens, _cleanup_rqlst,
_prepare_vocabulary_rqlst)
@objectify_selector
def contextview_selector(cls, req, rset=None, row=None, col=None, view=None,
**kwargs):
if view and getattr(view, 'filter_box_context_info', lambda: None)():
return 1
return 0
class FilterBox(BoxTemplate):
"""filter results of a query"""
id = 'filter_box'
__select__ = (((non_final_entity() & two_lines_rset())
| contextview_selector()
) & match_context_prop())
context = 'left'
title = _('boxes_filter_box')
visible = True # functionality provided by the search box by default
order = 1
roundcorners = True
needs_css = 'cubicweb.facets.css'
needs_js = ('cubicweb.ajax.js', 'cubicweb.formfilter.js')
bk_linkbox_template = u'<div class="facetTitle">%s</div>'
def facetargs(self):
"""this method returns the list of extra arguments that should
be used by the facet
"""
return {}
def _get_context(self, view):
context = getattr(view, 'filter_box_context_info', lambda: None)()
if context:
rset, vid, divid, paginate = context
else:
rset = self.rset
vid, divid = None, 'pageContent'
paginate = view and view.need_navigation
return rset, vid, divid, paginate
def call(self, view=None):
req = self.req
req.add_js( self.needs_js )
req.add_css( self.needs_css)
if self.roundcorners:
req.html_headers.add_onload('jQuery(".facet").corner("tl br 10px");')
rset, vid, divid, paginate = self._get_context(view)
if rset.rowcount < 2: # XXX done by selectors, though maybe necessary when rset has been hijacked
return
if vid is None:
vid = req.form.get('vid')
rqlst = rset.syntax_tree()
rqlst.save_state()
try:
mainvar, baserql = prepare_facets_rqlst(rqlst, rset.args)
widgets = []
for facet in self.get_facets(rset, mainvar):
if facet.propval('visible'):
wdg = facet.get_widget()
if wdg is not None:
widgets.append(wdg)
if not widgets:
return
if self.bk_linkbox_template:
self.display_bookmark_link(rset)
w = self.w
w(u'<form method="post" id="%sForm" cubicweb:facetargs="%s" action="">' % (
divid, xml_escape(dumps([divid, vid, paginate, self.facetargs()]))))
w(u'<fieldset>')
hiddens = {'facets': ','.join(wdg.facet.id for wdg in widgets),
'baserql': baserql}
for param in ('subvid', 'vtitle'):
if param in req.form:
hiddens[param] = req.form[param]
filter_hiddens(w, **hiddens)
for wdg in widgets:
wdg.render(w=self.w)
w(u'</fieldset>\n</form>\n')
finally:
rqlst.recover()
import cubicweb
cubicweb.info('after facets with rql: %s' % repr(rqlst))
def display_bookmark_link(self, rset):
eschema = self.schema.eschema('Bookmark')
if eschema.has_perm(self.req, 'add'):
bk_path = 'view?rql=%s' % rset.printable_rql()
bk_title = self.req._('my custom search')
linkto = 'bookmarked_by:%s:subject' % self.req.user.eid
bk_add_url = self.build_url('add/Bookmark', path=bk_path, title=bk_title, __linkto=linkto)
bk_base_url = self.build_url('add/Bookmark', title=bk_title, __linkto=linkto)
bk_link = u'<a cubicweb:target="%s" id="facetBkLink" href="%s">%s</a>' % (
xml_escape(bk_base_url),
xml_escape(bk_add_url),
self.req._('bookmark this search'))
self.w(self.bk_linkbox_template % bk_link)
def get_facets(self, rset, mainvar):
return self.vreg.possible_vobjects('facets', self.req, rset=rset,
context='facetbox',
filtered_variable=mainvar)
# facets ######################################################################
class CreatedByFacet(RelationFacet):
id = 'created_by-facet'
rtype = 'created_by'
target_attr = 'login'
class InGroupFacet(RelationFacet):
id = 'in_group-facet'
rtype = 'in_group'
target_attr = 'name'
class InStateFacet(RelationFacet):
id = 'in_state-facet'
rtype = 'in_state'
target_attr = 'name'
# inherit from RelationFacet to benefit from its possible_values implementation
class ETypeFacet(RelationFacet):
id = 'etype-facet'
__select__ = yes()
order = 1
rtype = 'is'
target_attr = 'name'
@property
def title(self):
return self.req._('entity type')
def vocabulary(self):
"""return vocabulary for this facet, eg a list of 2-uple (label, value)
"""
etypes = self.rset.column_types(0)
return sorted((self.req._(etype), etype) for etype in etypes)
def add_rql_restrictions(self):
"""add restriction for this facet into the rql syntax tree"""
value = self.req.form.get(self.id)
if not value:
return
self.rqlst.add_type_restriction(self.filtered_variable, value)
def possible_values(self):
"""return a list of possible values (as string since it's used to
compare to a form value in javascript) for this facet
"""
rqlst = self.rqlst
rqlst.save_state()
try:
_cleanup_rqlst(rqlst, self.filtered_variable)
etype_var = _prepare_vocabulary_rqlst(rqlst, self.filtered_variable, self.rtype, self.role)
attrvar = rqlst.make_variable()
rqlst.add_selected(attrvar)
rqlst.add_relation(etype_var, 'name', attrvar)
return [etype for _, etype in self.rqlexec(rqlst.as_string())]
finally:
rqlst.recover()
class HasTextFacet(AbstractFacet):
__select__ = relation_possible('has_text', 'subject') & match_context_prop()
id = 'has_text-facet'
rtype = 'has_text'
role = 'subject'
order = 0
@property
def title(self):
return self.req._('has_text')
def get_widget(self):
"""return the widget instance to use to display this facet
default implentation expects a .vocabulary method on the facet and
return a combobox displaying this vocabulary
"""
return FacetStringWidget(self)
def add_rql_restrictions(self):
"""add restriction for this facet into the rql syntax tree"""
value = self.req.form.get(self.id)
if not value:
return
self.rqlst.add_constant_restriction(self.filtered_variable, 'has_text', value, 'String')