web/views/workflow.py
author Aurelien Campeas <aurelien.campeas@logilab.fr>
Wed, 11 Jun 2014 14:47:50 +0200
changeset 10361 46d72f33c428
parent 10006 8391bf718485
child 10666 7f6b5f023884
permissions -rw-r--r--
[session/transaction] removed unused transaction class Related to #3933480.
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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_ = unicode
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import os
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from warnings import warn
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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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   108
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    def redirectpath(self, entity):
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        return entity.rest_path()
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   111
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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 = self._cw.varmaker.next()
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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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   136
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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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   163
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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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   170
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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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   183
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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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   329
    else:
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   330
        eids = form.linked_to.get(('transition_of', 'subject'))
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        if not eids:
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            return []
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   333
        wfeid = eids[0]
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   334
    return _wf_items_for_relation(form._cw, wfeid, 'state_of', field)
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parents: 3805
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   335
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   336
_afs.tag_subject_of(('*', 'destination_state', '*'), 'main', 'attributes')
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   337
_affk.tag_subject_of(('*', 'destination_state', '*'),
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   338
                     {'choices': transition_states_vocabulary})
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   339
_afs.tag_object_of(('*', 'allowed_transition', '*'), 'main', 'attributes')
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   340
_affk.tag_object_of(('*', 'allowed_transition', '*'),
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   341
                     {'choices': transition_states_vocabulary})
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   342
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   343
# State
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def state_transitions_vocabulary(form, field):
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    entity = form.edited_entity
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   347
    if entity.has_eid():
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   348
        wfeid = entity.state_of[0].eid
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   349
    else :
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Florent Cayré <florent.cayre@gmail.com>
parents: 7598
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   350
        eids = form.linked_to.get(('state_of', 'subject'))
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   351
        if not eids:
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   352
            return []
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   353
        wfeid = eids[0]
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   354
    return _wf_items_for_relation(form._cw, wfeid, 'transition_of', field)
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   355
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   356
_afs.tag_subject_of(('State', 'allowed_transition', '*'), 'main', 'attributes')
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   357
_affk.tag_subject_of(('State', 'allowed_transition', '*'),
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   358
                     {'choices': state_transitions_vocabulary})
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   359
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   360
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   361
# adaptaters ###################################################################
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   362
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   363
class WorkflowIBreadCrumbsAdapter(ibreadcrumbs.IBreadCrumbsAdapter):
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   364
    __select__ = is_instance('Workflow')
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   365
    # XXX what if workflow of multiple types?
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parents: 5426
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   366
    def parent_entity(self):
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   367
        return self.entity.workflow_of and self.entity.workflow_of[0] or None
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diff changeset
   368
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   369
class WorkflowItemIBreadCrumbsAdapter(ibreadcrumbs.IBreadCrumbsAdapter):
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   370
    __select__ = is_instance('BaseTransition', 'State')
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   371
    def parent_entity(self):
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   372
        return self.entity.workflow
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diff changeset
   373
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   374
class TransitionItemIBreadCrumbsAdapter(ibreadcrumbs.IBreadCrumbsAdapter):
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   375
    __select__ = is_instance('SubWorkflowExitPoint')
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   376
    def parent_entity(self):
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parents: 5426
diff changeset
   377
        return self.entity.reverse_subworkflow_exit[0]
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   378
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   379
class TrInfoIBreadCrumbsAdapter(ibreadcrumbs.IBreadCrumbsAdapter):
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diff changeset
   380
    __select__ = is_instance('TrInfo')
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diff changeset
   381
    def parent_entity(self):
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parents: 5426
diff changeset
   382
        return self.entity.for_entity
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parents: 5426
diff changeset
   383
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c6051f141807 register to catalog, delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   384
3215
bf30ab5ba6ee fix workflow graph views and tabs for the new wf system, remove useless view and action (actually useless since introduction of tabbed entity type view
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2920
diff changeset
   385
# workflow images ##############################################################
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parents: 984
diff changeset
   386
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Stephanie Marcu <stephanie.marcu@logilab.fr>
parents: 5877
diff changeset
   387
class WorkflowDotPropsHandler(DotPropsHandler):
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diff changeset
   388
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diff changeset
   389
    def node_properties(self, stateortransition):
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diff changeset
   390
        """return default DOT drawing options for a state or transition"""
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diff changeset
   391
        props = super(WorkflowDotPropsHandler, self).node_properties(stateortransition)
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diff changeset
   392
        if hasattr(stateortransition, 'state_of'):
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parents: 984
diff changeset
   393
            props['shape'] = 'box'
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diff changeset
   394
            props['style'] = 'filled'
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parents: 984
diff changeset
   395
            if stateortransition.reverse_initial_state:
5224
34e669b6fd95 [mq]: worklfow view
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parents: 5174
diff changeset
   396
                props['fillcolor'] = '#88CC88'
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diff changeset
   397
        else:
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diff changeset
   398
            props['shape'] = 'ellipse'
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diff changeset
   399
        return props
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diff changeset
   400
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parents: 984
diff changeset
   401
6103
072f23f6bf83 fix typo
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 6093
diff changeset
   402
class WorkflowVisitor(object):
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diff changeset
   403
    def __init__(self, entity):
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diff changeset
   404
        self.entity = entity
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diff changeset
   405
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parents: 984
diff changeset
   406
    def nodes(self):
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parents: 984
diff changeset
   407
        for state in self.entity.reverse_state_of:
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parents: 984
diff changeset
   408
            state.complete()
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parents: 984
diff changeset
   409
            yield state.eid, state
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parents: 984
diff changeset
   410
        for transition in self.entity.reverse_transition_of:
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parents: 984
diff changeset
   411
            transition.complete()
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parents: 984
diff changeset
   412
            yield transition.eid, transition
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parents: 1398
diff changeset
   413
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diff changeset
   414
    def edges(self):
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parents: 984
diff changeset
   415
        for transition in self.entity.reverse_transition_of:
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parents: 984
diff changeset
   416
            for incomingstate in transition.reverse_allowed_transition:
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parents: 984
diff changeset
   417
                yield incomingstate.eid, transition.eid, transition
4646
322c3dd96dd5 [workflow] finish refactoring introduced by 021035b9a7ab for 'go back' transition:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4436
diff changeset
   418
            for outgoingstate in transition.potential_destinations():
322c3dd96dd5 [workflow] finish refactoring introduced by 021035b9a7ab for 'go back' transition:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4436
diff changeset
   419
                yield transition.eid, outgoingstate.eid, transition
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diff changeset
   420
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diff changeset
   421
class WorkflowGraphView(DotGraphView):
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parents: 5174
diff changeset
   422
    __regid__ = 'wfgraph'
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5752
diff changeset
   423
    __select__ = EntityView.__select__ & one_line_rset() & is_instance('Workflow')
5224
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   424
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Stephanie Marcu <stephanie.marcu@logilab.fr>
parents: 5877
diff changeset
   425
    def build_visitor(self, entity):
9001a74fcc82 more generic dot graph generator
Stephanie Marcu <stephanie.marcu@logilab.fr>
parents: 5877
diff changeset
   426
        return WorkflowVisitor(entity)
9001a74fcc82 more generic dot graph generator
Stephanie Marcu <stephanie.marcu@logilab.fr>
parents: 5877
diff changeset
   427
9001a74fcc82 more generic dot graph generator
Stephanie Marcu <stephanie.marcu@logilab.fr>
parents: 5877
diff changeset
   428
    def build_dotpropshandler(self):
6103
072f23f6bf83 fix typo
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 6093
diff changeset
   429
        return WorkflowDotPropsHandler(self._cw)
5224
34e669b6fd95 [mq]: worklfow view
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   430
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
   431
7403
344aa07dd0f2 [workflow] new 'incontext-state' view for IWorkflowable entities
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6763
diff changeset
   432
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
   433
    __metaclass__ = class_deprecated
7b3fa5a7a5a3 [views/dot] use an inlined svg for schema and workflow graphs
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8665
diff changeset
   434
    __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
   435
    __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
   436
    __select__ = match_form_params('tmpfile')
1091
b5e253c0dd13 a bit of reorganisation inside web/views:
sylvain.thenault@logilab.fr
parents: 984
diff changeset
   437
    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
   438
    binary = True
1504
c6051f141807 register to catalog, delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   439
5224
34e669b6fd95 [mq]: worklfow view
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   440
    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
   441
        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
   442
        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
   443
            # 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
   444
            # 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
   445
            # 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
   446
            # 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
   447
            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
   448
        tmpfile = self._cw.session.data.pop(key)
5224
34e669b6fd95 [mq]: worklfow view
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   449
        self.w(open(tmpfile, 'rb').read())
5684
015755f67e46 [workflow image] remove debug code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5682
diff changeset
   450
        os.unlink(tmpfile)