web/views/primary.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Wed, 14 Apr 2010 10:29:38 +0200
changeset 5244 5467674ad101
parent 5239 471554b842d2
child 5423 e15abfdcce38
permissions -rw-r--r--
[web] put a fake object that raise Unauthorized on any attribute access as req.cnx and req._user, so we are properly asked to authenticated on any view that tries to do something with one of those attributes (instead of doing defensive programming everywhere we're doing that)

"""The default primary view

:organization: Logilab
:copyright: 2001-2010 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"
_ = unicode

from warnings import warn

from logilab.mtconverter import xml_escape

from cubicweb import Unauthorized
from cubicweb.selectors import match_kwargs
from cubicweb.view import EntityView
from cubicweb.schema import VIRTUAL_RTYPES, display_name
from cubicweb.web import uicfg


class PrimaryView(EntityView):
    """the full view of an non final entity"""
    __regid__ = 'primary'
    title = _('primary')
    show_attr_label = True
    show_rel_label = True
    skip_none = True
    rsection = uicfg.primaryview_section
    display_ctrl = uicfg.primaryview_display_ctrl
    main_related_section = True

    def html_headers(self):
        """return a list of html headers (eg something to be inserted between
        <head> and </head> of the returned page

        by default primary views are indexed
        """
        return []

    def cell_call(self, row, col):
        self.cw_row = row
        self.cw_col = col
        self.maxrelated = self._cw.property_value('navigation.related-limit')
        entity = self.cw_rset.complete_entity(row, col)
        self.render_entity(entity)

    def render_entity(self, entity):
        self.render_entity_toolbox(entity)
        self.render_entity_title(entity)
        # entity's attributes and relations, excluding meta data
        # if the entity isn't meta itself
        if self.is_primary():
            boxes = self._prepare_side_boxes(entity)
        else:
            boxes = None
        if boxes or hasattr(self, 'render_side_related'):
            self.w(u'<table width="100%"><tr><td style="width: 75%">')
        self.render_entity_summary(entity)
        self.w(u'<div class="mainInfo">')
        self.content_navigation_components('navcontenttop')
        self.render_entity_attributes(entity)
        if self.main_related_section:
            self.render_entity_relations(entity)
        self.content_navigation_components('navcontentbottom')
        self.w(u'</div>')
        # side boxes
        if boxes or hasattr(self, 'render_side_related'):
            self.w(u'</td><td>')
            self.w(u'<div class="primaryRight">')
            if hasattr(self, 'render_side_related'):
                warn('render_side_related is deprecated')
                self.render_side_related(entity, [])
            self.render_side_boxes(boxes)
            self.w(u'</div>')
            self.w(u'</td></tr></table>')

    def content_navigation_components(self, context):
        self.w(u'<div class="%s">' % context)
        for comp in self._cw.vreg['contentnavigation'].poss_visible_objects(
            self._cw, rset=self.cw_rset, row=self.cw_row, view=self, context=context):
            try:
                comp.render(w=self.w, row=self.cw_row, view=self)
            except NotImplementedError:
                warn('component %s doesnt implement cell_call, please update'
                     % comp.__class__, DeprecationWarning)
                comp.render(w=self.w, view=self)
        self.w(u'</div>')

    def render_entity_title(self, entity):
        """default implementation return dc_title"""
        title = xml_escape(entity.dc_title())
        if title:
            if self.is_primary():
                self.w(u'<h1>%s</h1>' % title)
            else:
                atitle = self._cw._('follow this link for more information on this %s') % entity.dc_type()
                self.w(u'<h4><a href="%s" title="%s">%s</a></h4>'
                       % (entity.absolute_url(), atitle, title))

    def render_entity_toolbox(self, entity):
        self.content_navigation_components('ctxtoolbar')

    def render_entity_metadata(self, entity):
        entity.view('metadata', w=self.w)

    def render_entity_summary(self, entity):
        summary = self.summary(entity) # deprecate summary?
        if summary:
            self.w(u'<div class="summary">%s</div>' % summary)

    def summary(self, entity):
        """default implementation return an empty string"""
        return u''

    def render_entity_attributes(self, entity):
        display_attributes = []
        for rschema, _, role, dispctrl in self._section_def(entity, 'attributes'):
            vid = dispctrl.get('vid', 'reledit')
            if rschema.final or vid == 'reledit':
                value = entity.view(vid, rtype=rschema.type, role=role)
            else:
                rset = self._relation_rset(entity, rschema, role, dispctrl)
                if rset:
                    value = self._cw.view(vid, rset)
                else:
                    value = None
            if not self.skip_none or (value is not None and value != ''):
                display_attributes.append( (rschema, role, dispctrl, value) )
        if display_attributes:
            self.w(u'<table>')
            for rschema, role, dispctrl, value in display_attributes:
                try:
                    self._render_attribute(dispctrl, rschema, value,
                                           role=role, table=True)
                except TypeError:
                    warn('[3.6] _render_attribute prototype has changed, please'
                         ' update %s' % self.__class___, DeprecationWarning)
                    self._render_attribute(rschema, value, role=role, table=True)
            self.w(u'</table>')

    def render_entity_relations(self, entity):
        for rschema, tschemas, role, dispctrl in self._section_def(entity, 'relations'):
            rset = self._relation_rset(entity, rschema, role, dispctrl)
            if rset:
                try:
                    self._render_relation(dispctrl, rset, 'autolimited')
                except TypeError:
                    warn('[3.6] _render_relation prototype has changed, '
                         'please update %s' % self.__class__, DeprecationWarning)
                    self._render_relation(rset, dispctrl, 'autolimited',
                                          self.show_rel_label)

    def render_side_boxes(self, boxes):
        """display side related relations:
        non-meta in a first step, meta in a second step
        """
        for box in boxes:
            if isinstance(box, tuple):
                try:
                    label, rset, vid, dispctrl  = box
                except ValueError:
                    warn('[3.5] box views should now be defined as a 4-uple (label, rset, vid, dispctrl), '
                         'please update %s' % self.__class__.__name__,
                         DeprecationWarning)
                    label, rset, vid  = box
                self.w(u'<div class="sideBox">')
                self.wview(vid, rset, title=label)
                self.w(u'</div>')
            else:
                try:
                    box.render(w=self.w, row=self.cw_row)
                except NotImplementedError:
                    # much probably a context insensitive box, which only implements
                    # .call() and not cell_call()
                    box.render(w=self.w)

    def _prepare_side_boxes(self, entity):
        sideboxes = []
        for rschema, tschemas, role, dispctrl in self._section_def(entity, 'sideboxes'):
            rset = self._relation_rset(entity, rschema, role, dispctrl)
            if not rset:
                continue
            label = display_name(self._cw, rschema.type, role)
            vid = dispctrl.get('vid', 'sidebox')
            sideboxes.append( (label, rset, vid, dispctrl) )
        sideboxes += self._cw.vreg['boxes'].poss_visible_objects(
            self._cw, rset=self.cw_rset, row=self.cw_row, view=self,
            context='incontext')
        # XXX since we've two sorted list, it may be worth using bisect
        def get_order(x):
            if isinstance(x, tuple):
                # x is a view box (label, rset, vid, dispctrl)
                # default to 1000 so view boxes occurs after component boxes
                return x[-1].get('order', 1000)
            # x is a component box
            return x.cw_propval('order')
        return sorted(sideboxes, key=get_order)

    def _section_def(self, entity, where):
        rdefs = []
        eschema = entity.e_schema
        for rschema, tschemas, role in eschema.relation_definitions(True):
            if rschema in VIRTUAL_RTYPES:
                continue
            matchtschemas = []
            for tschema in tschemas:
                section = self.rsection.etype_get(eschema, rschema, role,
                                                  tschema)
                if section == where:
                    matchtschemas.append(tschema)
            if matchtschemas:
                # XXX pick the latest dispctrl
                dispctrl = self.display_ctrl.etype_get(eschema, rschema, role,
                                                       matchtschemas[-1])

                rdefs.append( (rschema, matchtschemas, role, dispctrl) )
        return sorted(rdefs, key=lambda x: x[-1]['order'])

    def _relation_rset(self, entity, rschema, role, dispctrl):
        try:
            dispctrl.setdefault('limit', self.maxrelated)
            rset = entity.related(rschema.type, role, limit=dispctrl['limit']+1)
        except Unauthorized:
            return
        if 'filter' in dispctrl:
            rset = dispctrl['filter'](rset)
        return rset

    def _render_relation(self, dispctrl, rset, defaultvid):
        self.w(u'<div class="section">')
        if dispctrl.get('showlabel', self.show_rel_label):
            self.w(u'<h4>%s</h4>' % self._cw._(dispctrl['label']))
        self.wview(dispctrl.get('vid', defaultvid), rset,
                   initargs={'dispctrl': dispctrl})
        self.w(u'</div>')

    def _render_attribute(self, dispctrl, rschema, value,
                          role='subject', table=False):
        if rschema.final:
            showlabel = dispctrl.get('showlabel', self.show_attr_label)
        else:
            showlabel = dispctrl.get('showlabel', self.show_rel_label)
        if dispctrl.get('label'):
            label = self._cw._(dispctrl.get('label'))
        else:
            label = display_name(self._cw, rschema.type, role)
        self.field(label, value, show_label=showlabel, tr=False, table=table)


class RelatedView(EntityView):
    __regid__ = 'autolimited'

    def call(self, **kwargs):
        # nb: rset retreived using entity.related with limit + 1 if any
        # because of that, we known that rset.printable_rql() will return
        # rql with no limit set anyway (since it's handled manually)
        if 'dispctrl' in self.cw_extra_kwargs:
            limit = self.cw_extra_kwargs['dispctrl'].get('limit')
        else:
            limit = None
        if limit is None or self.cw_rset.rowcount <= limit:
            if self.cw_rset.rowcount == 1:
                self.wview('incontext', self.cw_rset, row=0)
            elif 1 < self.cw_rset.rowcount <= 5:
                self.wview('csv', self.cw_rset)
            else:
                self.w(u'<div>')
                self.wview('simplelist', self.cw_rset)
                self.w(u'</div>')
        # else show links to display related entities
        else:
            rql = self.cw_rset.printable_rql()
            self.cw_rset.limit(limit) # remove extra entity
            self.w(u'<div>')
            self.wview('simplelist', self.cw_rset)
            self.w(u'[<a href="%s">%s</a>]' % (self._cw.build_url(rql=rql),
                                               self._cw._('see them all')))
            self.w(u'</div>')


class URLAttributeView(EntityView):
    """use this view for attributes whose value is an url and that you want
    to display as clickable link
    """
    __regid__ = 'urlattr'
    __select__ = EntityView.__select__ & match_kwargs('rtype')

    def cell_call(self, row, col, rtype, **kwargs):
        entity = self.cw_rset.get_entity(row, col)
        url = entity.printable_value(rtype)
        if url:
            self.w(u'<a href="%s">%s</a>' % (url, url))


## default primary ui configuration ###########################################

_pvs = uicfg.primaryview_section
for rtype in ('eid', 'creation_date', 'modification_date', 'cwuri',
              'is', 'is_instance_of', 'identity', 'owned_by', 'created_by',
              'require_permission', 'see_also'):
    _pvs.tag_subject_of(('*', rtype, '*'), 'hidden')
    _pvs.tag_object_of(('*', rtype, '*'), 'hidden')