web/views/workflow.py
author Rémi Cardona <remi.cardona@logilab.fr>
Mon, 07 Sep 2015 18:42:47 +0200
changeset 10889 310344d6cc6c
parent 10688 fa29f3628a1b
permissions -rw-r--r--
[web/views] Fix sqlite unicode warning
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# copyright 2003-2014 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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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""workflow views:
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* IWorkflowable views and forms
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* workflow entities views (State, Transition, TrInfo)
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"""
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__docformat__ = "restructuredtext en"
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from cubicweb import _
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import os
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from warnings import warn
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from six import add_metaclass
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from logilab.mtconverter import xml_escape
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from logilab.common.graph import escape
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from logilab.common.deprecation import class_deprecated
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from cubicweb import Unauthorized
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from cubicweb.predicates import (has_related_entities, one_line_rset,
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                                relation_possible, match_form_params,
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                                score_entity, is_instance, adaptable)
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from cubicweb.view import EntityView
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from cubicweb.schema import display_name
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from cubicweb.web import stdmsgs, action, component, form, action
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from cubicweb.web import formfields as ff, formwidgets as fwdgs
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from cubicweb.web.views import TmpFileViewMixin
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from cubicweb.web.views import uicfg, forms, primary, ibreadcrumbs
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from cubicweb.web.views.tabs import TabbedPrimaryView, PrimaryTab
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from cubicweb.web.views.dotgraphview import DotGraphView, DotPropsHandler
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_pvs = uicfg.primaryview_section
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_pvs.tag_subject_of(('Workflow', 'initial_state', '*'), 'hidden')
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_pvs.tag_object_of(('*', 'state_of', 'Workflow'), 'hidden')
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_pvs.tag_object_of(('*', 'transition_of', 'Workflow'), 'hidden')
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_pvs.tag_object_of(('*', 'wf_info_for', '*'), 'hidden')
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for rtype in ('in_state', 'by_transition', 'from_state', 'to_state'):
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    _pvs.tag_subject_of(('*', rtype, '*'), 'hidden')
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    _pvs.tag_object_of(('*', rtype, '*'), 'hidden')
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_pvs.tag_object_of(('*', 'wf_info_for', '*'), 'hidden')
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_abaa = uicfg.actionbox_appearsin_addmenu
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_abaa.tag_subject_of(('BaseTransition', 'condition', 'RQLExpression'), False)
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_abaa.tag_subject_of(('State', 'allowed_transition', 'BaseTransition'), False)
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_abaa.tag_object_of(('SubWorkflowExitPoint', 'destination_state', 'State'),
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                    False)
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_abaa.tag_subject_of(('*', 'wf_info_for', '*'), False)
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_abaa.tag_object_of(('*', 'wf_info_for', '*'), False)
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_abaa.tag_object_of(('*', 'state_of', 'CWEType'), True)
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_abaa.tag_object_of(('*', 'transition_of', 'CWEType'), True)
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_abaa.tag_subject_of(('Transition', 'destination_state', '*'), True)
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_abaa.tag_object_of(('*', 'allowed_transition', 'Transition'), True)
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_abaa.tag_object_of(('*', 'destination_state', 'State'), True)
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_abaa.tag_subject_of(('State', 'allowed_transition', '*'), True)
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_abaa.tag_object_of(('State', 'state_of', 'Workflow'), True)
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_abaa.tag_object_of(('Transition', 'transition_of', 'Workflow'), True)
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_abaa.tag_object_of(('WorkflowTransition', 'transition_of', 'Workflow'), True)
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_afs = uicfg.autoform_section
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_affk = uicfg.autoform_field_kwargs
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# IWorkflowable views #########################################################
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class ChangeStateForm(forms.CompositeEntityForm):
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    # set dom id to ensure there is no conflict with edition form (see
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    # session_key() implementation)
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    __regid__ = domid = 'changestate'
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    form_renderer_id = 'base' # don't want EntityFormRenderer
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    form_buttons = [fwdgs.SubmitButton(),
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                    fwdgs.Button(stdmsgs.BUTTON_CANCEL, cwaction='cancel')]
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class ChangeStateFormView(form.FormViewMixIn, EntityView):
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    __regid__ = 'statuschange'
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    title = _('status change')
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    __select__ = (one_line_rset()
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                  & match_form_params('treid')
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                  & adaptable('IWorkflowable'))
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    def cell_call(self, row, col):
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        entity = self.cw_rset.get_entity(row, col)
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        transition = self._cw.entity_from_eid(self._cw.form['treid'])
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        form = self.get_form(entity, transition)
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        self.w(u'<h4>%s %s</h4>\n' % (self._cw._(transition.name),
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                                      entity.view('oneline')))
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        msg = self._cw._('status will change from %(st1)s to %(st2)s') % {
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            'st1': entity.cw_adapt_to('IWorkflowable').printable_state,
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            'st2': self._cw._(transition.destination(entity).name)}
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        self.w(u'<p>%s</p>\n' % msg)
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        form.render(w=self.w)
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    def redirectpath(self, entity):
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        return entity.rest_path()
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    def get_form(self, entity, transition, **kwargs):
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        # XXX used to specify both rset/row/col and entity in case implements
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        # selector (and not is_instance) is used on custom form
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        form = self._cw.vreg['forms'].select(
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            'changestate', self._cw, entity=entity, transition=transition,
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            redirect_path=self.redirectpath(entity), **kwargs)
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        trinfo = self._cw.vreg['etypes'].etype_class('TrInfo')(self._cw)
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        trinfo.eid = next(self._cw.varmaker)
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        subform = self._cw.vreg['forms'].select('edition', self._cw, entity=trinfo,
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                                                mainform=False)
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        subform.field_by_name('wf_info_for', 'subject').value = entity.eid
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        trfield = subform.field_by_name('by_transition', 'subject')
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        trfield.widget = fwdgs.HiddenInput()
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        trfield.value = transition.eid
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        form.add_subform(subform)
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        return form
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class WFHistoryView(EntityView):
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    __regid__ = 'wfhistory'
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    __select__ = relation_possible('wf_info_for', role='object') & \
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                 score_entity(lambda x: x.cw_adapt_to('IWorkflowable').workflow_history)
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    title = _('Workflow history')
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    def cell_call(self, row, col, view=None, title=title):
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        _ = self._cw._
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        eid = self.cw_rset[row][col]
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        sel = 'Any FS,TS,C,D'
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        rql = ' ORDERBY D DESC WHERE WF wf_info_for X,'\
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              'WF from_state FS, WF to_state TS, WF comment C,'\
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              'WF creation_date D'
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        if self._cw.vreg.schema.eschema('CWUser').has_perm(self._cw, 'read'):
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            sel += ',U,WF'
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            rql += ', WF owned_by U?'
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            headers = (_('from_state'), _('to_state'), _('comment'), _('date'),
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                       _('CWUser'))
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        else:
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            sel += ',WF'
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            headers = (_('from_state'), _('to_state'), _('comment'), _('date'))
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        rql = '%s %s, X eid %%(x)s' % (sel, rql)
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        try:
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            rset = self._cw.execute(rql, {'x': eid})
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        except Unauthorized:
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            return
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        if rset:
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            if title:
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                self.w(u'<h2>%s</h2>\n' % _(title))
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            self.wview('table', rset, headers=headers,
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                       cellvids={2: 'editable-final'})
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class WFHistoryVComponent(component.EntityCtxComponent):
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    """display the workflow history for entities supporting it"""
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    __regid__ = 'wfhistory'
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    __select__ = component.EntityCtxComponent.__select__ & WFHistoryView.__select__
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    context = 'navcontentbottom'
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    title = _('Workflow history')
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   172
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    def render_body(self, w):
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        self.entity.view('wfhistory', w=w, title=None)
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class InContextWithStateView(EntityView):
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    """display incontext view for an entity as well as its current state"""
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    __regid__ = 'incontext-state'
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    __select__ = adaptable('IWorkflowable')
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    def entity_call(self, entity):
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        iwf = entity.cw_adapt_to('IWorkflowable')
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        self.w(u'%s [%s]' % (entity.view('incontext'), iwf.printable_state))
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   185
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# workflow actions #############################################################
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class WorkflowActions(action.Action):
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    """fill 'workflow' sub-menu of the actions box"""
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    __regid__ = 'workflow'
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    __select__ = (action.Action.__select__ & one_line_rset() &
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                  relation_possible('in_state'))
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    submenu = _('workflow')
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    order = 10
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    def fill_menu(self, box, menu):
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        entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0)
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        menu.label = u'%s: %s' % (self._cw._('state'),
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                                  entity.cw_adapt_to('IWorkflowable').printable_state)
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        menu.append_anyway = True
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        super(WorkflowActions, self).fill_menu(box, menu)
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    def actual_actions(self):
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        entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0)
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        iworkflowable = entity.cw_adapt_to('IWorkflowable')
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        hastr = False
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        for tr in iworkflowable.possible_transitions():
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            url = entity.absolute_url(vid='statuschange', treid=tr.eid)
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            yield self.build_action(self._cw._(tr.name), url)
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            hastr = True
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        # don't propose to see wf if user can't pass any transition
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        if hastr:
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            wfurl = iworkflowable.current_workflow.absolute_url()
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            yield self.build_action(self._cw._('view workflow'), wfurl)
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        if iworkflowable.workflow_history:
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            wfurl = entity.absolute_url(vid='wfhistory')
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            yield self.build_action(self._cw._('view history'), wfurl)
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# workflow entity types views ##################################################
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_pvs = uicfg.primaryview_section
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_pvs.tag_subject_of(('Workflow', 'initial_state', '*'), 'hidden')
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_pvs.tag_object_of(('*', 'state_of', 'Workflow'), 'hidden')
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_pvs.tag_object_of(('*', 'transition_of', 'Workflow'), 'hidden')
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_pvs.tag_object_of(('*', 'default_workflow', 'Workflow'), 'hidden')
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_abaa = uicfg.actionbox_appearsin_addmenu
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_abaa.tag_subject_of(('BaseTransition', 'condition', 'RQLExpression'), False)
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_abaa.tag_subject_of(('State', 'allowed_transition', 'BaseTransition'), False)
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_abaa.tag_object_of(('SubWorkflowExitPoint', 'destination_state', 'State'),
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                    False)
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_abaa.tag_object_of(('State', 'state_of', 'Workflow'), True)
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_abaa.tag_object_of(('BaseTransition', 'transition_of', 'Workflow'), False)
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_abaa.tag_object_of(('Transition', 'transition_of', 'Workflow'), True)
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_abaa.tag_object_of(('WorkflowTransition', 'transition_of', 'Workflow'), True)
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class WorkflowPrimaryView(TabbedPrimaryView):
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    __select__ = is_instance('Workflow')
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    tabs = [  _('wf_tab_info'), _('wfgraph'),]
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    default_tab = 'wf_tab_info'
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class StateInContextView(EntityView):
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    """convenience trick, State's incontext view should not be clickable"""
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    __regid__ = 'incontext'
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    __select__ = is_instance('State')
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    def cell_call(self, row, col):
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        self.w(xml_escape(self._cw.view('textincontext', self.cw_rset,
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                                        row=row, col=col)))
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class WorkflowTabTextView(PrimaryTab):
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    __regid__ = 'wf_tab_info'
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    __select__ = PrimaryTab.__select__ & one_line_rset() & is_instance('Workflow')
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    def render_entity_attributes(self, entity):
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        _ = self._cw._
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        self.w(u'<div>%s</div>' % (entity.printable_value('description')))
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        self.w(u'<span>%s%s</span>' % (_("workflow_of").capitalize(), _(" :")))
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        html = []
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        for e in  entity.workflow_of:
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            view = e.view('outofcontext')
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            if entity.eid == e.default_workflow[0].eid:
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                view += u' <span>[%s]</span>' % _('default_workflow')
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            html.append(view)
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        self.w(', '.join(v for v in html))
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        self.w(u'<h2>%s</h2>' % _("Transition_plural"))
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        rset = self._cw.execute(
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            'Any T,T,DS,T,TT ORDERBY TN WHERE T transition_of WF, WF eid %(x)s,'
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            'T type TT, T name TN, T destination_state DS?', {'x': entity.eid})
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        self.wview('table', rset, 'null',
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                   cellvids={ 1: 'trfromstates', 2: 'outofcontext', 3:'trsecurity',},
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                   headers = (_('Transition'),  _('from_state'),
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                              _('to_state'), _('permissions'), _('type') ),
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                   )
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class TransitionSecurityTextView(EntityView):
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    __regid__ = 'trsecurity'
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    __select__ = is_instance('Transition')
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    def cell_call(self, row, col):
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        _ = self._cw._
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        entity = self.cw_rset.get_entity(self.cw_row, self.cw_col)
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        if entity.require_group:
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            self.w(u'<div>%s%s %s</div>' %
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                   (_('groups'), _(" :"),
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                    u', '.join((g.view('incontext') for g
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                               in entity.require_group))))
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        if entity.condition:
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            self.w(u'<div>%s%s %s</div>' %
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                   ( _('conditions'), _(" :"),
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                     u'<br/>'.join((e.dc_title() for e
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                                in entity.condition))))
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class TransitionAllowedTextView(EntityView):
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    __regid__ = 'trfromstates'
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    __select__ = is_instance('Transition')
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    def cell_call(self, row, col):
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        entity = self.cw_rset.get_entity(self.cw_row, self.cw_col)
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        self.w(u', '.join((e.view('outofcontext') for e
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                           in entity.reverse_allowed_transition)))
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# workflow entity types edition ################################################
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def _wf_items_for_relation(req, wfeid, wfrelation, field):
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    wf = req.entity_from_eid(wfeid)
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    rschema = req.vreg.schema[field.name]
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    param = 'toeid' if field.role == 'subject' else 'fromeid'
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    return sorted((e.view('combobox'), unicode(e.eid))
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                  for e in getattr(wf, 'reverse_%s' % wfrelation)
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                  if rschema.has_perm(req, 'add', **{param: e.eid}))
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# TrInfo
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_afs.tag_subject_of(('TrInfo', 'to_state', '*'), 'main', 'hidden')
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_afs.tag_subject_of(('TrInfo', 'from_state', '*'), 'main', 'hidden')
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_afs.tag_attribute(('TrInfo', 'tr_count'), 'main', 'hidden')
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# BaseTransition
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# XXX * allowed_transition BaseTransition
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# XXX BaseTransition destination_state *
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def transition_states_vocabulary(form, field):
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    entity = form.edited_entity
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    if entity.has_eid():
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        wfeid = entity.transition_of[0].eid
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    else:
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        eids = form.linked_to.get(('transition_of', 'subject'))
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        if not eids:
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            return []
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        wfeid = eids[0]
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    return _wf_items_for_relation(form._cw, wfeid, 'state_of', field)
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_afs.tag_subject_of(('*', 'destination_state', '*'), 'main', 'attributes')
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_affk.tag_subject_of(('*', 'destination_state', '*'),
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                     {'choices': transition_states_vocabulary})
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_afs.tag_object_of(('*', 'allowed_transition', '*'), 'main', 'attributes')
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_affk.tag_object_of(('*', 'allowed_transition', '*'),
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                     {'choices': transition_states_vocabulary})
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# State
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def state_transitions_vocabulary(form, field):
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    entity = form.edited_entity
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    if entity.has_eid():
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        wfeid = entity.state_of[0].eid
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    else :
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        eids = form.linked_to.get(('state_of', 'subject'))
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        if not eids:
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            return []
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        wfeid = eids[0]
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    return _wf_items_for_relation(form._cw, wfeid, 'transition_of', field)
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_afs.tag_subject_of(('State', 'allowed_transition', '*'), 'main', 'attributes')
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_affk.tag_subject_of(('State', 'allowed_transition', '*'),
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                     {'choices': state_transitions_vocabulary})
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   362
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# adaptaters ###################################################################
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class WorkflowIBreadCrumbsAdapter(ibreadcrumbs.IBreadCrumbsAdapter):
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    __select__ = is_instance('Workflow')
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    # XXX what if workflow of multiple types?
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    def parent_entity(self):
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        return self.entity.workflow_of and self.entity.workflow_of[0] or None
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class WorkflowItemIBreadCrumbsAdapter(ibreadcrumbs.IBreadCrumbsAdapter):
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    __select__ = is_instance('BaseTransition', 'State')
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    def parent_entity(self):
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        return self.entity.workflow
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class TransitionItemIBreadCrumbsAdapter(ibreadcrumbs.IBreadCrumbsAdapter):
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   377
    __select__ = is_instance('SubWorkflowExitPoint')
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   378
    def parent_entity(self):
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   379
        return self.entity.reverse_subworkflow_exit[0]
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   380
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class TrInfoIBreadCrumbsAdapter(ibreadcrumbs.IBreadCrumbsAdapter):
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   382
    __select__ = is_instance('TrInfo')
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   383
    def parent_entity(self):
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   384
        return self.entity.for_entity
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   385
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   386
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diff changeset
   387
# workflow images ##############################################################
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   388
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diff changeset
   389
class WorkflowDotPropsHandler(DotPropsHandler):
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   390
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   391
    def node_properties(self, stateortransition):
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   392
        """return default DOT drawing options for a state or transition"""
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diff changeset
   393
        props = super(WorkflowDotPropsHandler, self).node_properties(stateortransition)
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   394
        if hasattr(stateortransition, 'state_of'):
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   395
            props['shape'] = 'box'
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   396
            props['style'] = 'filled'
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   397
            if stateortransition.reverse_initial_state:
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diff changeset
   398
                props['fillcolor'] = '#88CC88'
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diff changeset
   399
        else:
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   400
            props['shape'] = 'ellipse'
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   401
        return props
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   402
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diff changeset
   403
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072f23f6bf83 fix typo
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diff changeset
   404
class WorkflowVisitor(object):
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   405
    def __init__(self, entity):
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   406
        self.entity = entity
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   407
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   408
    def nodes(self):
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   409
        for state in self.entity.reverse_state_of:
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diff changeset
   410
            state.complete()
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   411
            yield state.eid, state
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diff changeset
   412
        for transition in self.entity.reverse_transition_of:
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diff changeset
   413
            transition.complete()
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diff changeset
   414
            yield transition.eid, transition
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   415
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   416
    def edges(self):
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diff changeset
   417
        for transition in self.entity.reverse_transition_of:
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   418
            for incomingstate in transition.reverse_allowed_transition:
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diff changeset
   419
                yield incomingstate.eid, transition.eid, transition
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diff changeset
   420
            for outgoingstate in transition.potential_destinations():
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diff changeset
   421
                yield transition.eid, outgoingstate.eid, transition
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diff changeset
   422
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diff changeset
   423
class WorkflowGraphView(DotGraphView):
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diff changeset
   424
    __regid__ = 'wfgraph'
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diff changeset
   425
    __select__ = EntityView.__select__ & one_line_rset() & is_instance('Workflow')
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diff changeset
   426
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diff changeset
   427
    def build_visitor(self, entity):
9001a74fcc82 more generic dot graph generator
Stephanie Marcu <stephanie.marcu@logilab.fr>
parents: 5877
diff changeset
   428
        return WorkflowVisitor(entity)
9001a74fcc82 more generic dot graph generator
Stephanie Marcu <stephanie.marcu@logilab.fr>
parents: 5877
diff changeset
   429
9001a74fcc82 more generic dot graph generator
Stephanie Marcu <stephanie.marcu@logilab.fr>
parents: 5877
diff changeset
   430
    def build_dotpropshandler(self):
6103
072f23f6bf83 fix typo
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 6093
diff changeset
   431
        return WorkflowDotPropsHandler(self._cw)
5224
34e669b6fd95 [mq]: worklfow view
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   432
5682
5628247f51ce [security] view was giving web access to every fs file accessible by the web server process. Fix this security hole by storing file in session data, not direct form parameters
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   433
10688
fa29f3628a1b [py3k] use six.add_metaclass
Rémi Cardona <remi.cardona@logilab.fr>
parents: 10669
diff changeset
   434
@add_metaclass(class_deprecated)
7403
344aa07dd0f2 [workflow] new 'incontext-state' view for IWorkflowable entities
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6763
diff changeset
   435
class TmpPngView(TmpFileViewMixin, EntityView):
9383
7b3fa5a7a5a3 [views/dot] use an inlined svg for schema and workflow graphs
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   436
    __deprecation_warning__ = '[3.18] %(cls)s is deprecated'
5682
5628247f51ce [security] view was giving web access to every fs file accessible by the web server process. Fix this security hole by storing file in session data, not direct form parameters
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   437
    __regid__ = 'tmppng'
5628247f51ce [security] view was giving web access to every fs file accessible by the web server process. Fix this security hole by storing file in session data, not direct form parameters
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   438
    __select__ = match_form_params('tmpfile')
1091
b5e253c0dd13 a bit of reorganisation inside web/views:
sylvain.thenault@logilab.fr
parents: 984
diff changeset
   439
    content_type = 'image/png'
5682
5628247f51ce [security] view was giving web access to every fs file accessible by the web server process. Fix this security hole by storing file in session data, not direct form parameters
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   440
    binary = True
1504
c6051f141807 register to catalog, delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   441
5224
34e669b6fd95 [mq]: worklfow view
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   442
    def cell_call(self, row=0, col=0):
9426
8e87f1e18a37 [views/workflow/tmppng] fix console crash on nth call to this one-shot view
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   443
        key = self._cw.form['tmpfile']
8e87f1e18a37 [views/workflow/tmppng] fix console crash on nth call to this one-shot view
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   444
        if key not in self._cw.session.data:
8e87f1e18a37 [views/workflow/tmppng] fix console crash on nth call to this one-shot view
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   445
            # the temp file is gone and there's nothing
8e87f1e18a37 [views/workflow/tmppng] fix console crash on nth call to this one-shot view
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   446
            # we can do about it
8e87f1e18a37 [views/workflow/tmppng] fix console crash on nth call to this one-shot view
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   447
            # we should probably write it to some well
8e87f1e18a37 [views/workflow/tmppng] fix console crash on nth call to this one-shot view
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   448
            # behaved place and serve it
8e87f1e18a37 [views/workflow/tmppng] fix console crash on nth call to this one-shot view
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   449
            return
8e87f1e18a37 [views/workflow/tmppng] fix console crash on nth call to this one-shot view
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   450
        tmpfile = self._cw.session.data.pop(key)
5224
34e669b6fd95 [mq]: worklfow view
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   451
        self.w(open(tmpfile, 'rb').read())
5684
015755f67e46 [workflow image] remove debug code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5682
diff changeset
   452
        os.unlink(tmpfile)