"""form renderers, responsible to layout a form to html
:organization: Logilab
:copyright: 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 logilab.common import dictattr
from logilab.mtconverter import xml_escape
from simplejson import dumps
from cubicweb.common import tags
from cubicweb.appobject import AppObject
from cubicweb.selectors import entity_implements, yes
from cubicweb.web import eid_param, formwidgets as fwdgs
from cubicweb.web.formfields import HiddenInitialValueField
def checkbox(name, value, attrs='', checked=None):
if checked is None:
checked = value
checked = checked and 'checked="checked"' or ''
return u'<input type="checkbox" name="%s" value="%s" %s %s />' % (
name, value, checked, attrs)
class FormRenderer(AppObject):
"""basic renderer displaying fields in a two columns table label | value
+--------------+--------------+
| field1 label | field1 input |
+--------------+--------------+
| field1 label | field2 input |
+--------------+--------------+
+---------+
| buttons |
+---------+
"""
__registry__ = 'formrenderers'
id = 'default'
_options = ('display_fields', 'display_label', 'display_help',
'display_progress_div', 'table_class', 'button_bar_class',
# add entity since it may be given to select the renderer
'entity')
display_fields = None # None -> all fields
display_label = True
display_help = True
display_progress_div = True
table_class = u'attributeForm'
button_bar_class = u'formButtonBar'
def __init__(self, req=None, rset=None, row=None, col=None, **kwargs):
super(FormRenderer, self).__init__(req, rset, row, col)
if self._set_options(kwargs):
raise ValueError('unconsumed arguments %s' % kwargs)
def _set_options(self, kwargs):
for key in self._options:
try:
setattr(self, key, kwargs.pop(key))
except KeyError:
continue
return kwargs
# renderer interface ######################################################
def render(self, form, values):
self._set_options(values)
form.add_media()
data = []
w = data.append
w(self.open_form(form, values))
if self.display_progress_div:
w(u'<div id="progress">%s</div>' % self.req._('validating...'))
w(u'<fieldset>')
w(tags.input(type=u'hidden', name=u'__form_id',
value=values.get('formvid', form.id)))
if form.redirect_path:
w(tags.input(type='hidden', name='__redirectpath', value=form.redirect_path))
self.render_fields(w, form, values)
self.render_buttons(w, form)
w(u'</fieldset>')
w(u'</form>')
errormsg = self.error_message(form)
if errormsg:
data.insert(0, errormsg)
return '\n'.join(data)
def render_label(self, form, field):
if field.label is None:
return u''
label = self.req._(field.label)
attrs = {'for': form.context[field]['id']}
if field.required:
attrs['class'] = 'required'
return tags.label(label, **attrs)
def render_help(self, form, field):
help = []
descr = field.help
if callable(descr):
descr = descr(form)
if descr:
help.append('<div class="helper">%s</div>' % self.req._(descr))
example = field.example_format(self.req)
if example:
help.append('<div class="helper">(%s: %s)</div>'
% (self.req._('sample format'), example))
return u' '.join(help)
# specific methods (mostly to ease overriding) #############################
def error_message(self, form):
"""return formatted error message
This method should be called once inlined field errors has been consumed
"""
req = self.req
errex = form.form_valerror
# get extra errors
if errex is not None:
errormsg = req._('please correct the following errors:')
displayed = form.form_displayed_errors
errors = sorted((field, err) for field, err in errex.errors.items()
if not field in displayed)
if errors:
if len(errors) > 1:
templstr = '<li>%s</li>\n'
else:
templstr = ' %s\n'
for field, err in errors:
if field is None:
errormsg += templstr % err
else:
errormsg += templstr % '%s: %s' % (req._(field), err)
if len(errors) > 1:
errormsg = '<ul>%s</ul>' % errormsg
return u'<div class="errorMessage">%s</div>' % errormsg
return u''
def open_form(self, form, values):
if form.form_needs_multipart:
enctype = 'multipart/form-data'
else:
enctype = 'application/x-www-form-urlencoded'
if form.action is None:
action = self.req.build_url('edit')
else:
action = form.action
tag = ('<form action="%s" method="post" enctype="%s"' % (
xml_escape(action or '#'), enctype))
if form.domid:
tag += ' id="%s"' % form.domid
if form.onsubmit:
tag += ' onsubmit="%s"' % xml_escape(form.onsubmit % dictattr(form))
if form.cssstyle:
tag += ' style="%s"' % xml_escape(form.cssstyle)
if form.cssclass:
tag += ' class="%s"' % xml_escape(form.cssclass)
if form.cwtarget:
tag += ' cubicweb:target="%s"' % xml_escape(form.cwtarget)
return tag + '>'
def display_field(self, form, field):
if isinstance(field, HiddenInitialValueField):
field = field.visible_field
return (self.display_fields is None
or field.name in form.internal_fields
or (field.name, field.role) in self.display_fields
or (field.name, field.role) in form.internal_fields)
def render_fields(self, w, form, values):
form.form_build_context(values)
fields = self._render_hidden_fields(w, form)
if fields:
self._render_fields(fields, w, form)
self.render_child_forms(w, form, values)
def render_child_forms(self, w, form, values):
# render
for childform in getattr(form, 'forms', []):
self.render_fields(w, childform, values)
def _render_hidden_fields(self, w, form):
fields = form.fields[:]
for field in form.fields:
if not self.display_field(form, field):
fields.remove(field)
elif not field.is_visible():
w(field.render(form, self))
fields.remove(field)
return fields
def _render_fields(self, fields, w, form):
byfieldset = {}
for field in fields:
byfieldset.setdefault(field.fieldset, []).append(field)
if form.fieldsets_in_order:
fieldsets = form.fieldsets_in_order
else:
fieldsets = byfieldset.keys()
for fieldset in fieldsets:
try:
fields = byfieldset.pop(fieldset)
except KeyError:
self.warning('no such fieldset: %s (%s)', fieldset, form)
continue
w(u'<fieldset class="%s">' % (fieldset or u'default'))
if fieldset:
w(u'<legend>%s</legend>' % self.req._(fieldset))
w(u'<table class="%s">' % self.table_class)
for field in fields:
w(u'<tr class="%s_%s_row">' % (field.name, field.role))
if self.display_label:
w(u'<th class="labelCol">%s</th>' % self.render_label(form, field))
error = form.form_field_error(field)
if error:
w(u'<td class="error">')
w(error)
else:
w(u'<td>')
w(field.render(form, self))
if self.display_help:
w(self.render_help(form, field))
w(u'</td></tr>')
w(u'</table></fieldset>')
if byfieldset:
self.warning('unused fieldsets: %s', ', '.join(byfieldset))
def render_buttons(self, w, form):
if not form.form_buttons:
return
w(u'<table class="%s">\n<tr>\n' % self.button_bar_class)
for button in form.form_buttons:
w(u'<td>%s</td>\n' % button.render(form))
w(u'</tr></table>')
class BaseFormRenderer(FormRenderer):
"""use form_renderer_id = 'base' if you want base FormRenderer layout even
when selected for an entity
"""
id = 'base'
class EntityBaseFormRenderer(BaseFormRenderer):
"""use form_renderer_id = 'base' if you want base FormRenderer layout even
when selected for an entity
"""
__select__ = entity_implements('Any')
def display_field(self, form, field):
if not super(EntityBaseFormRenderer, self).display_field(form, field):
if isinstance(field, HiddenInitialValueField):
field = field.visible_field
ismeta = form.edited_entity.e_schema.is_metadata(field.name)
return ismeta is not None and (
ismeta[0] in self.display_fields or
(ismeta[0], 'subject') in self.display_fields)
return True
class HTableFormRenderer(FormRenderer):
"""display fields horizontally in a table
+--------------+--------------+---------+
| field1 label | field2 label | |
+--------------+--------------+---------+
| field1 input | field2 input | buttons
+--------------+--------------+---------+
"""
id = 'htable'
display_help = False
def _render_fields(self, fields, w, form):
w(u'<table border="0">')
w(u'<tr>')
for field in fields:
if self.display_label:
w(u'<th class="labelCol">%s</th>' % self.render_label(form, field))
if self.display_help:
w(self.render_help(form, field))
# empty slot for buttons
w(u'<th class="labelCol"> </th>')
w(u'</tr>')
w(u'<tr>')
for field in fields:
error = form.form_field_error(field)
if error:
w(u'<td class="error">')
w(error)
else:
w(u'<td>')
w(field.render(form, self))
w(u'</td>')
w(u'<td>')
for button in form.form_buttons:
w(button.render(form))
w(u'</td>')
w(u'</tr>')
w(u'</table>')
def render_buttons(self, w, form):
pass
class EntityCompositeFormRenderer(FormRenderer):
"""specific renderer for multiple entities edition form (muledit)"""
id = 'composite'
_main_display_fields = None
def render_fields(self, w, form, values):
if not form.is_subform:
w(u'<table class="listing">')
subfields = [field for field in form.forms[0].fields
if self.display_field(form, field)
and field.is_visible()]
if subfields:
# main form, display table headers
w(u'<tr class="header">')
w(u'<th align="left">%s</th>' %
tags.input(type='checkbox',
title=self.req._('toggle check boxes'),
onclick="setCheckboxesState('eid', this.checked)"))
for field in subfields:
w(u'<th>%s</th>' % self.req._(field.label))
w(u'</tr>')
super(EntityCompositeFormRenderer, self).render_fields(w, form, values)
if not form.is_subform:
w(u'</table>')
if self._main_display_fields:
super(EntityCompositeFormRenderer, self)._render_fields(
self._main_display_fields, w, form)
def _render_fields(self, fields, w, form):
if form.is_subform:
entity = form.edited_entity
values = form.form_previous_values
qeid = eid_param('eid', entity.eid)
cbsetstate = "setCheckboxesState2('eid', %s, 'checked')" % \
xml_escape(dumps(entity.eid))
w(u'<tr class="%s">' % (entity.row % 2 and u'even' or u'odd'))
# XXX turn this into a widget used on the eid field
w(u'<td>%s</td>' % checkbox('eid', entity.eid,
checked=qeid in values))
for field in fields:
error = form.form_field_error(field)
if error:
w(u'<td class="error">')
w(error)
else:
w(u'<td>')
if isinstance(field.widget, (fwdgs.Select, fwdgs.CheckBox,
fwdgs.Radio)):
field.widget.attrs['onchange'] = cbsetstate
elif isinstance(field.widget, fwdgs.Input):
field.widget.attrs['onkeypress'] = cbsetstate
# XXX else
w(u'<div>%s</div>' % field.render(form, self))
w(u'</td>\n')
w(u'</tr>')
else:
self._main_display_fields = fields
class EntityFormRenderer(EntityBaseFormRenderer):
"""specific renderer for entity edition form (edition)"""
id = 'default'
# needs some additional points in some case (XXX explain cases)
__select__ = EntityBaseFormRenderer.__select__ & yes()
_options = FormRenderer._options + ('display_relations_form',)
display_relations_form = True
def render(self, form, values):
rendered = super(EntityFormRenderer, self).render(form, values)
return rendered + u'</div>' # close extra div introducted by open_form
def open_form(self, form, values):
attrs_fs_label = ('<div class="iformTitle"><span>%s</span></div>'
% self.req._('main informations'))
attrs_fs_label += '<div class="formBody">'
return attrs_fs_label + super(EntityFormRenderer, self).open_form(form, values)
def render_fields(self, w, form, values):
super(EntityFormRenderer, self).render_fields(w, form, values)
self.inline_entities_form(w, form)
if form.edited_entity.has_eid() and self.display_relations_form:
self.relations_form(w, form)
def _render_fields(self, fields, w, form):
if not form.edited_entity.has_eid() or form.edited_entity.has_perm('update'):
super(EntityFormRenderer, self)._render_fields(fields, w, form)
def render_buttons(self, w, form):
if len(form.form_buttons) == 3:
w("""<table width="100%%">
<tbody>
<tr><td align="center">
%s
</td><td style="align: right; width: 50%%;">
%s
%s
</td></tr>
</tbody>
</table>""" % tuple(button.render(form) for button in form.form_buttons))
else:
super(EntityFormRenderer, self).render_buttons(w, form)
def relations_form(self, w, form):
srels_by_cat = form.srelations_by_category('generic', 'add')
if not srels_by_cat:
return u''
req = self.req
_ = req._
label = u'%s :' % _('This %s' % form.edited_entity.e_schema).capitalize()
eid = form.edited_entity.eid
w(u'<fieldset class="subentity">')
w(u'<legend class="iformTitle">%s</legend>' % label)
w(u'<table id="relatedEntities">')
for rschema, target, related in form.relations_table():
# already linked entities
if related:
w(u'<tr><th class="labelCol">%s</th>' % rschema.display_name(req, target))
w(u'<td>')
w(u'<ul>')
for viewparams in related:
w(u'<li class="invisible">%s<div id="span%s" class="%s">%s</div></li>'
% (viewparams[1], viewparams[0], viewparams[2], viewparams[3]))
if not form.force_display and form.maxrelitems < len(related):
link = (u'<span class="invisible">'
'[<a href="javascript: window.location.href+=\'&__force_display=1\'">%s</a>]'
'</span>' % self.req._('view all'))
w(u'<li class="invisible">%s</li>' % link)
w(u'</ul>')
w(u'</td>')
w(u'</tr>')
pendings = list(form.restore_pending_inserts())
if not pendings:
w(u'<tr><th> </th><td> </td></tr>')
else:
for row in pendings:
# soon to be linked to entities
w(u'<tr id="tr%s">' % row[1])
w(u'<th>%s</th>' % row[3])
w(u'<td>')
w(u'<a class="handle" title="%s" href="%s">[x]</a>' %
(_('cancel this insert'), row[2]))
w(u'<a id="a%s" class="editionPending" href="%s">%s</a>'
% (row[1], row[4], xml_escape(row[5])))
w(u'</td>')
w(u'</tr>')
w(u'<tr id="relationSelectorRow_%s" class="separator">' % eid)
w(u'<th class="labelCol">')
w(u'<span>%s</span>' % _('add relation'))
w(u'<select id="relationSelector_%s" tabindex="%s" '
'onchange="javascript:showMatchingSelect(this.options[this.selectedIndex].value,%s);">'
% (eid, req.next_tabindex(), xml_escape(dumps(eid))))
w(u'<option value="">%s</option>' % _('select a relation'))
for i18nrtype, rschema, target in srels_by_cat:
# more entities to link to
w(u'<option value="%s_%s">%s</option>' % (rschema, target, i18nrtype))
w(u'</select>')
w(u'</th>')
w(u'<td id="unrelatedDivs_%s"></td>' % eid)
w(u'</tr>')
w(u'</table>')
w(u'</fieldset>')
def inline_entities_form(self, w, form):
"""create a form to edit entity's inlined relations"""
if not hasattr(form, 'inlined_relations'):
return
for rschema, targettypes, role in form.inlined_relations():
# show inline forms only if there's one possible target type
# for rschema
if len(targettypes) != 1:
self.warning('entity related by the %s relation should have '
'inlined form but there is multiple target types, '
'dunno what to do', rschema)
continue
targettype = targettypes[0].type
if form.should_inline_relation_form(rschema, targettype, role):
self.inline_relation_form(w, form, rschema, targettype, role)
def inline_relation_form(self, w, form, rschema, targettype, role):
entity = form.edited_entity
__ = self.req.__
w(u'<div id="inline%sslot">' % rschema)
existant = entity.has_eid() and entity.related(rschema)
if existant:
# display inline-edition view for all existing related entities
w(form.view('inline-edition', existant, rtype=rschema, role=role,
ptype=entity.e_schema, peid=entity.eid))
if role == 'subject':
card = rschema.rproperty(entity.e_schema, targettype, 'cardinality')[0]
else:
card = rschema.rproperty(targettype, entity.e_schema, 'cardinality')[1]
# there is no related entity and we need at least one: we need to
# display one explicit inline-creation view
if form.should_display_inline_creation_form(rschema, existant, card):
w(form.view('inline-creation', None, etype=targettype,
peid=entity.eid, ptype=entity.e_schema,
rtype=rschema, role=role))
# we can create more than one related entity, we thus display a link
# to add new related entities
if form.should_display_add_new_relation_link(rschema, existant, card):
divid = "addNew%s%s%s:%s" % (targettype, rschema, role, entity.eid)
w(u'<div class="inlinedform" id="%s" cubicweb:limit="true">'
% divid)
js = "addInlineCreationForm('%s', '%s', '%s', '%s')" % (
entity.eid, targettype, rschema, role)
if card in '1?':
js = "toggleVisibility('%s'); %s" % (divid, js)
w(u'<a class="addEntity" id="add%s:%slink" href="javascript: %s" >+ %s.</a>'
% (rschema, entity.eid, js, __('add a %s' % targettype)))
w(u'</div>')
w(u'<div class="trame_grise"> </div>')
w(u'</div>')
class EntityInlinedFormRenderer(EntityFormRenderer):
"""specific renderer for entity inlined edition form
(inline-[creation|edition])
"""
id = 'inline'
def render(self, form, values):
form.add_media()
data = []
w = data.append
try:
w(u'<div id="div-%(divid)s" onclick="%(divonclick)s">' % values)
except KeyError:
w(u'<div id="div-%(divid)s">' % values)
else:
w(u'<div id="notice-%s" class="notice">%s</div>' % (
values['divid'], self.req._('click on the box to cancel the deletion')))
w(u'<div class="iformBody">')
values['removemsg'] = self.req.__('remove this %s' % form.edited_entity.e_schema)
w(u'<div class="iformTitle"><span>%(title)s</span> '
'#<span class="icounter">%(counter)s</span> '
'[<a href="javascript: %(removejs)s;noop();">%(removemsg)s</a>]</div>'
% values)
# cleanup values
for key in ('title', 'removejs', 'removemsg'):
values.pop(key)
self.render_fields(w, form, values)
w(u'</div></div>')
return '\n'.join(data)
def render_fields(self, w, form, values):
form.form_build_context(values)
w(u'<fieldset id="fs-%(divid)s">' % values)
fields = self._render_hidden_fields(w, form)
w(u'</fieldset>')
w(u'<fieldset class="subentity">')
if fields:
self._render_fields(fields, w, form)
self.render_child_forms(w, form, values)
self.inline_entities_form(w, form)
w(u'</fieldset>')