web/views/boxes.py
author sylvain.thenault@logilab.fr
Wed, 15 Apr 2009 17:30:03 +0200
branchtls-sprint
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merge
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"""
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generic boxes for CubicWeb web client:
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* actions box
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* possible views box
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additional (disabled by default) boxes
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* schema box
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* startup views box
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:organization: Logilab
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:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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"""
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__docformat__ = "restructuredtext en"
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from logilab.mtconverter import html_escape
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from cubicweb.rtags import RelationTags
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from cubicweb.selectors import match_user_groups, non_final_entity
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from cubicweb.web.htmlwidgets import BoxWidget, BoxMenu, BoxHtml, RawBoxItem
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from cubicweb.view import EntityView
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from cubicweb.web import uicfg
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from cubicweb.web.box import BoxTemplate
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_ = unicode
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class EditBox(BoxTemplate):
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    """
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    box with all actions impacting the entity displayed: edit, copy, delete
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    change state, add related entities
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    """
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    id = 'edit_box'
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    __select__ = BoxTemplate.__select__ & non_final_entity()
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    title = _('actions')
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    order = 2
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    # class attributes below are actually stored in the uicfg module since we
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    # don't want them to be reloaded
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    rmode = uicfg.rmode
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    @classmethod
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    def vreg_initialization_completed(cls):
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        """set default category tags for relations where it's not yet defined in
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        the category relation tags
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        """
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        for eschema in cls.schema.entities():
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            for rschema, tschemas, role in eschema.relation_definitions(True):
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                for tschema in tschemas:
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                    if role == 'subject':
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                        X, Y = eschema, tschema
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                        card = rschema.rproperty(X, Y, 'cardinality')[0]
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                    else:
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                        X, Y = tschema, eschema
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                        card = rschema.rproperty(X, Y, 'cardinality')[1]
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                    if not cls.rmode.rtag(rschema, role, X, Y):
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                        if card in '?1':
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                            # by default, suppose link mode if cardinality doesn't allow
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                            # more than one relation
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                            mode = 'link'
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                        elif rschema.rproperty(X, Y, 'composite') == role:
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                            # if self is composed of the target type, create mode
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                            mode = 'create'
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                        else:
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                            # link mode by default
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                            mode = 'link'
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                        cls.rmode.set_rtag(mode, rschema, role, X, Y)
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    @classmethod
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    def relation_mode(cls, rtype, etype, targettype, role='subject'):
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        """return a string telling if the given relation is usually created
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        to a new entity ('create' mode) or to an existant entity ('link' mode)
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        """
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        return cls.rmode.rtag(rtype, role, etype, targettype)
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    def call(self, view=None, **kwargs):
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        _ = self.req._
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        title = _(self.title)
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        if self.rset:
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            etypes = self.rset.column_types(0)
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            if len(etypes) == 1:
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                plural = self.rset.rowcount > 1 and 'plural' or ''
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                etypelabel = display_name(self.req, iter(etypes).next(), plural)
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                title = u'%s - %s' % (title, etypelabel.lower())
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        box = BoxWidget(title, self.id, _class="greyBoxFrame")
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        # build list of actions
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        actions = self.vreg.possible_actions(self.req, self.rset, view=view)
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        add_menu = BoxMenu(_('add')) # 'addrelated' category
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        other_menu = BoxMenu(_('more actions')) # 'moreactions' category
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        searchstate = self.req.search_state[0]
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        for category, menu in (('mainactions', box),
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                               ('addrelated', add_menu),
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                               ('moreactions', other_menu)):
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            for action in actions.get(category, ()):
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                menu.append(self.box_action(action))
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        if self.rset and self.rset.rowcount == 1 and \
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               not self.schema[self.rset.description[0][0]].is_final() and \
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               searchstate == 'normal':
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            entity = self.rset.get_entity(0, 0)
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            #entity.complete()
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            if add_menu.items:
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                self.info('explicit actions defined, ignoring potential rtags for %s',
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                          entity.e_schema)
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            else:
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                # some addrelated actions may be specified but no one is selectable
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                # in which case we should not fallback to schema_actions. The proper
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                # way to avoid this is to override add_related_schemas() on the
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                # entity class to return an empty list
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                for action in self.schema_actions(entity):
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                    add_menu.append(action)
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            self.workflow_actions(entity, box)
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        if box.is_empty() and not other_menu.is_empty():
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            box.items = other_menu.items
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            other_menu.items = []
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        self.add_submenu(box, add_menu, _('add'))
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        self.add_submenu(box, other_menu)
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        if not box.is_empty():
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            box.render(self.w)
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    def add_submenu(self, box, submenu, label_prefix=None):
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        if len(submenu.items) == 1:
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            boxlink = submenu.items[0]
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            if label_prefix:
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                boxlink.label = u'%s %s' % (label_prefix, boxlink.label)
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            box.append(boxlink)
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        elif submenu.items:
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            box.append(submenu)
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    def schema_actions(self, entity):
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        user = self.req.user
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        actions = []
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        _ = self.req._
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        eschema = entity.e_schema
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        for rschema, teschema, x in self.add_related_schemas(entity):
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            if x == 'subject':
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                label = 'add %s %s %s %s' % (eschema, rschema, teschema, x)
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                url = self.linkto_url(entity, rschema, teschema, 'object')
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            else:
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                label = 'add %s %s %s %s' % (teschema, rschema, eschema, x)
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                url = self.linkto_url(entity, rschema, teschema, 'subject')
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            actions.append(self.mk_action(_(label), url))
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        return actions
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    def add_related_schemas(self, entity):
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        """this is actually used ui method to generate 'addrelated' actions from
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        the schema.
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        If you're using explicit 'addrelated' actions for an entity types, you
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        should probably overrides this method to return an empty list else you
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        may get some unexpected actions.
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        """
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        req = self.req
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        eschema = entity.e_schema
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        for role, rschemas in (('subject', eschema.subject_relations()),
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                               ('object', eschema.object_relations())):
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            for rschema in rschemas:
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                if rschema.is_final():
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                    continue
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                # check the relation can be added as well
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                if role == 'subject'and not rschema.has_perm(req, 'add', fromeid=entity.eid):
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                    continue
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                if role == 'object'and not rschema.has_perm(req, 'add', toeid=entity.eid):
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                    continue
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                # check the target types can be added as well
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                for teschema in rschema.targets(eschema, role):
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                    if not self.relation_mode(rschema, eschema, teschema, role) == 'create':
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                        continue
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                    if teschema.has_local_role('add') or teschema.has_perm(req, 'add'):
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                        yield rschema, teschema, role
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0
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185
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    def workflow_actions(self, entity, box):
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        if 'in_state' in entity.e_schema.subject_relations() and entity.in_state:
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            _ = self.req._
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            state = entity.in_state[0]
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            transitions = list(state.transitions(entity))
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            if transitions:
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                menu_title = u'%s: %s' % (_('state'), state.view('text'))
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                menu_items = []
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                for tr in transitions:
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                    url = entity.absolute_url(vid='statuschange', treid=tr.eid)
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                    menu_items.append(self.mk_action(_(tr.name), url))
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                box.append(BoxMenu(menu_title, menu_items))
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            # when there are no possible transition, put state if the menu if
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            # there are some other actions
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            elif not box.is_empty():
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                menu_title = u'<a title="%s">%s: <i>%s</i></a>' % (
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                    _('no possible transition'), _('state'), state.view('text'))
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                box.append(RawBoxItem(menu_title, 'boxMainactions'))
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        return None
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0
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    def linkto_url(self, entity, rtype, etype, target):
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        return self.build_url(vid='creation', etype=etype,
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                              __linkto='%s:%s:%s' % (rtype, entity.eid, target),
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                              __redirectpath=entity.rest_path(), # should not be url quoted!
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                              __redirectvid=self.req.form.get('vid', ''))
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class SearchBox(BoxTemplate):
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    """display a box with a simple search form"""
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    id = 'search_box'
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0
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    visible = True # enabled by default
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    title = _('search')
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    order = 0
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    formdef = u"""<form action="%s">
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<table id="tsearch"><tr><td>
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<input id="norql" type="text" accesskey="q" tabindex="%s" title="search text" value="%s" name="rql" />
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<input type="hidden" name="__fromsearchbox" value="1" />
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<input type="hidden" name="subvid" value="tsearch" />
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</td><td>
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<input tabindex="%s" type="submit" id="rqlboxsubmit" class="rqlsubmit" value="" />
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</td></tr></table>
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</form>"""
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    def call(self, view=None, **kwargs):
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        req = self.req
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        if req.form.pop('__fromsearchbox', None):
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            rql = req.form.get('rql', '')
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        else:
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            rql = ''
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        form = self.formdef % (req.build_url('view'), req.next_tabindex(),
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                               html_escape(rql), req.next_tabindex())
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        title = u"""<span onclick="javascript: toggleVisibility('rqlinput')">%s</span>""" % req._(self.title)
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        box = BoxWidget(title, self.id, _class="searchBoxFrame", islist=False, escape=False)
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        box.append(BoxHtml(form))
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        box.render(self.w)            
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# boxes disabled by default ###################################################
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class PossibleViewsBox(BoxTemplate):
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    """display a box containing links to all possible views"""
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    id = 'possible_views_box'
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    __select__ = BoxTemplate.__select__ & match_user_groups('users', 'managers')
0
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    visible = False
0
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    title = _('possible views')
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    order = 10
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    def call(self, **kwargs):
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        box = BoxWidget(self.req._(self.title), self.id)
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        views = [v for v in self.vreg.possible_views(self.req, self.rset)
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                 if v.category != 'startupview']
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        for category, views in self.sort_actions(views):
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            menu = BoxMenu(category)
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            for view in views:
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                menu.append(self.box_action(view))
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            box.append(menu)
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        if not box.is_empty():
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            box.render(self.w)
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class StartupViewsBox(BoxTemplate):
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    """display a box containing links to all startup views"""
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    id = 'startup_views_box'
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    visible = False # disabled by default
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    title = _('startup views')
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    order = 70
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    def call(self, **kwargs):
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        box = BoxWidget(self.req._(self.title), self.id)
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        for view in self.vreg.possible_views(self.req, None):
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            if view.category == 'startupview':
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                box.append(self.box_action(view))
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        if not box.is_empty():
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            box.render(self.w)
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# helper classes ##############################################################
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class SideBoxView(EntityView):
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    """helper view class to display some entities in a sidebox"""
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    id = 'sidebox'
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    def call(self, boxclass='sideBox', title=u''):
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        """display a list of entities by calling their <item_vid> view"""
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        if title:
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            self.w(u'<div class="sideBoxTitle"><span>%s</span></div>' % title)
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        self.w(u'<div class="%s"><div class="sideBoxBody">' % boxclass)
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        # if not too much entities, show them all in a list
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        maxrelated = self.req.property_value('navigation.related-limit')
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        if self.rset.rowcount <= maxrelated:
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            if len(self.rset) == 1:
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                self.wview('incontext', self.rset, row=0)
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            elif 1 < len(self.rset) < 5:
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                self.wview('csv', self.rset)
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            else:
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                self.wview('simplelist', self.rset)
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        # else show links to display related entities
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        else:
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            self.rset.limit(maxrelated)
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            rql = self.rset.printable_rql(encoded=False)
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            self.wview('simplelist', self.rset)
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            self.w(u'[<a href="%s">%s</a>]' % (self.build_url(rql=rql),
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                                               self.req._('see them all')))
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        self.w(u'</div>\n</div>\n')