author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Fri, 19 Feb 2010 09:34:14 +0100 | |
branch | stable |
changeset 4643 | 921737d2e3a8 |
parent 4436 | 294e084f1263 |
child 4646 | 322c3dd96dd5 |
permissions | -rw-r--r-- |
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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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:organization: Logilab |
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update copyright: welcome 2010
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2. |
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses |
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""" |
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__docformat__ = "restructuredtext en" |
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_ = unicode |
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use xml_escape
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from logilab.mtconverter import xml_escape |
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from logilab.common.graph import escape, GraphGenerator, DotBackend |
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from cubicweb import Unauthorized, view |
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from cubicweb.selectors import (implements, has_related_entities, one_line_rset, |
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relation_possible, match_form_params, |
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implements, score_entity) |
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from cubicweb.interfaces import IWorkflowable |
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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 uicfg, 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, forms, primary, autoform |
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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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_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(('Transition', 'transition_of', 'Workflow'), True) |
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_abaa.tag_object_of(('WorkflowTransition', 'transition_of', 'Workflow'), True) |
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|
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_afs = uicfg.autoform_section |
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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_object_of(('State', 'allowed_transition', '*'), 'main', 'attributes') |
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# IWorkflowable views ######################################################### |
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class ChangeStateForm(forms.CompositeEntityForm): |
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__regid__ = 'changestate' |
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|
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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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|
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class ChangeStateFormView(form.FormViewMixIn, view.EntityView): |
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__regid__ = 'statuschange' |
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title = _('status change') |
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__select__ = (one_line_rset() & implements(IWorkflowable) |
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& match_form_params('treid')) |
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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.req._('status will change from %(st1)s to %(st2)s') % { |
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'st1': entity.printable_state, |
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'st2': self._cw._(transition.destination().name)} |
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self.w(u'<p>%s</p>\n' % msg) |
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self.w(form.render()) |
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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 implements) 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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|
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#343227: display the workflow history of any entity
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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.workflow_history) |
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title = _('Workflow history') |
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|
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def cell_call(self, row, col, view=None): |
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_ = self._cw._ |
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106 |
eid = self.cw_rset[row][col] |
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107 |
sel = 'Any FS,TS,WF,D' |
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108 |
rql = ' ORDERBY D DESC WHERE WF wf_info_for X,'\ |
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109 |
'WF from_state FS, WF to_state TS, WF comment C,'\ |
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110 |
'WF creation_date D' |
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111 |
if self._cw.vreg.schema.eschema('CWUser').has_perm(self._cw, 'read'): |
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112 |
sel += ',U,C' |
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113 |
rql += ', WF owned_by U?' |
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114 |
displaycols = range(5) |
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115 |
headers = (_('from_state'), _('to_state'), _('comment'), _('date'), |
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116 |
_('CWUser')) |
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117 |
else: |
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118 |
sel += ',C' |
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119 |
displaycols = range(4) |
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120 |
headers = (_('from_state'), _('to_state'), _('comment'), _('date')) |
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121 |
rql = '%s %s, X eid %%(x)s' % (sel, rql) |
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122 |
try: |
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123 |
rset = self._cw.execute(rql, {'x': eid}, 'x') |
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124 |
except Unauthorized: |
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125 |
return |
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126 |
if rset: |
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127 |
self.wview('table', rset, title=_(self.title), displayactions=False, |
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128 |
displaycols=displaycols, headers=headers) |
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129 |
|
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130 |
|
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131 |
class WFHistoryVComponent(component.EntityVComponent): |
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132 |
"""display the workflow history for entities supporting it""" |
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133 |
__regid__ = 'wfhistory' |
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134 |
__select__ = WFHistoryView.__select__ & component.EntityVComponent.__select__ |
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135 |
context = 'navcontentbottom' |
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136 |
title = _('Workflow history') |
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137 |
|
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138 |
def cell_call(self, row, col, view=None): |
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139 |
self.wview('wfhistory', self.cw_rset, row=row, col=col, view=view) |
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140 |
|
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141 |
|
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142 |
# workflow actions ############################################################# |
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143 |
|
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144 |
class WorkflowActions(action.Action): |
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145 |
"""fill 'workflow' sub-menu of the actions box""" |
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146 |
__regid__ = 'workflow' |
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147 |
__select__ = (action.Action.__select__ & one_line_rset() & |
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148 |
relation_possible('in_state')) |
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149 |
|
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150 |
submenu = _('workflow') |
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151 |
order = 10 |
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152 |
|
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153 |
def fill_menu(self, box, menu): |
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154 |
entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0) |
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155 |
menu.label = u'%s: %s' % (self._cw._('state'), entity.printable_state) |
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156 |
menu.append_anyway = True |
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157 |
super(WorkflowActions, self).fill_menu(box, menu) |
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158 |
|
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159 |
def actual_actions(self): |
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160 |
entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0) |
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161 |
hastr = False |
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162 |
for tr in entity.possible_transitions(): |
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163 |
url = entity.absolute_url(vid='statuschange', treid=tr.eid) |
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164 |
yield self.build_action(self._cw._(tr.name), url) |
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165 |
hastr = True |
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166 |
# don't propose to see wf if user can't pass any transition |
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167 |
if hastr: |
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168 |
wfurl = entity.current_workflow.absolute_url() |
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169 |
yield self.build_action(self._cw._('view workflow'), wfurl) |
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170 |
if entity.workflow_history: |
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171 |
wfurl = entity.absolute_url(vid='wfhistory') |
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172 |
yield self.build_action(self._cw._('view history'), wfurl) |
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173 |
|
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174 |
|
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175 |
# workflow entity types views ################################################## |
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176 |
|
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177 |
_pvs = uicfg.primaryview_section |
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178 |
_pvs.tag_subject_of(('Workflow', 'initial_state', '*'), 'hidden') |
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179 |
_pvs.tag_object_of(('*', 'state_of', 'Workflow'), 'hidden') |
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180 |
_pvs.tag_object_of(('*', 'transition_of', 'Workflow'), 'hidden') |
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181 |
|
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182 |
_abaa = uicfg.actionbox_appearsin_addmenu |
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183 |
_abaa.tag_subject_of(('BaseTransition', 'condition', 'RQLExpression'), False) |
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184 |
_abaa.tag_subject_of(('State', 'allowed_transition', 'BaseTransition'), False) |
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185 |
_abaa.tag_object_of(('SubWorkflowExitPoint', 'destination_state', 'State'), |
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186 |
False) |
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187 |
_abaa.tag_object_of(('State', 'state_of', 'Workflow'), True) |
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188 |
_abaa.tag_object_of(('BaseTransition', 'transition_of', 'Workflow'), False) |
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189 |
_abaa.tag_object_of(('Transition', 'transition_of', 'Workflow'), True) |
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190 |
_abaa.tag_object_of(('WorkflowTransition', 'transition_of', 'Workflow'), True) |
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191 |
|
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192 |
class WorkflowPrimaryView(primary.PrimaryView): |
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193 |
__select__ = implements('Workflow') |
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194 |
|
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195 |
def render_entity_attributes(self, entity): |
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196 |
self.w(entity.view('reledit', rtype='description')) |
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197 |
self.w(u'<img src="%s" alt="%s"/>' % ( |
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198 |
xml_escape(entity.absolute_url(vid='wfgraph')), |
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xml_escape(self._cw._('graphical workflow for %s') % entity.name))) |
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200 |
|
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201 |
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class CellView(view.EntityView): |
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__regid__ = 'cell' |
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__select__ = implements('TrInfo') |
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def cell_call(self, row, col, cellvid=None): |
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self.w(self.cw_rset.get_entity(row, col).view('reledit', rtype='comment')) |
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class StateInContextView(view.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__ = implements('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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# workflow entity types edition ################################################ |
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_afs = uicfg.autoform_section |
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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_object_of(('State', 'allowed_transition', '*'), 'main', 'attributes') |
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_afs.tag_subject_of(('State', 'allowed_transition', '*'), 'main', 'attributes') |
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def workflow_items_for_relation(req, wfeid, wfrelation, targetrelation): |
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wf = req.entity_from_eid(wfeid) |
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rschema = req.vreg.schema[targetrelation] |
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return sorted((e.view('combobox'), e.eid) |
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for e in getattr(wf, 'reverse_%s' % wfrelation) |
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if rschema.has_perm(req, 'add', toeid=e.eid)) |
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class TransitionEditionForm(autoform.AutomaticEntityForm): |
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__select__ = implements('Transition') |
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def workflow_states_for_relation(self, targetrelation): |
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eids = self.edited_entity.linked_to('transition_of', 'subject') |
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if eids: |
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return workflow_items_for_relation(self._cw, eids[0], 'state_of', |
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243 |
targetrelation) |
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return [] |
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def subject_destination_state_vocabulary(self, rtype, limit=None): |
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if not self.edited_entity.has_eid(): |
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return self.workflow_states_for_relation('destination_state') |
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return self.subject_relation_vocabulary(rtype, limit) |
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def object_allowed_transition_vocabulary(self, rtype, limit=None): |
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if not self.edited_entity.has_eid(): |
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return self.workflow_states_for_relation('allowed_transition') |
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return self.object_relation_vocabulary(rtype, limit) |
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|
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256 |
|
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class StateEditionForm(autoform.AutomaticEntityForm): |
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__select__ = implements('State') |
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259 |
|
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def subject_allowed_transition_vocabulary(self, rtype, limit=None): |
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if not self.edited_entity.has_eid(): |
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eids = self.edited_entity.linked_to('state_of', 'subject') |
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263 |
if eids: |
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return workflow_items_for_relation(self._cw, eids[0], 'transition_of', |
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265 |
'allowed_transition') |
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266 |
return [] |
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267 |
|
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268 |
|
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# workflow images ############################################################## |
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|
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271 |
class WorkflowDotPropsHandler(object): |
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def __init__(self, req): |
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self._ = req._ |
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|
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def node_properties(self, stateortransition): |
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"""return default DOT drawing options for a state or transition""" |
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props = {'label': stateortransition.printable_value('name'), |
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'fontname': 'Courier'} |
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if hasattr(stateortransition, 'state_of'): |
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props['shape'] = 'box' |
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props['style'] = 'filled' |
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if stateortransition.reverse_initial_state: |
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props['color'] = '#88CC88' |
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284 |
else: |
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props['shape'] = 'ellipse' |
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descr = [] |
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tr = stateortransition |
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if tr.require_group: |
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descr.append('%s %s'% ( |
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self._('groups:'), |
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','.join(g.printable_value('name') for g in tr.require_group))) |
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if tr.condition: |
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descr.append('%s %s'% ( |
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self._('condition:'), |
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' | '.join(e.expression for e in tr.condition))) |
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if descr: |
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props['label'] += escape('\n'.join(descr)) |
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return props |
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|
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def edge_properties(self, transition, fromstate, tostate): |
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301 |
return {'label': '', 'dir': 'forward', |
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'color': 'black', 'style': 'filled'} |
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|
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class WorkflowVisitor: |
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def __init__(self, entity): |
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self.entity = entity |
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|
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def nodes(self): |
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for state in self.entity.reverse_state_of: |
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state.complete() |
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yield state.eid, state |
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for transition in self.entity.reverse_transition_of: |
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transition.complete() |
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yield transition.eid, transition |
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def edges(self): |
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for transition in self.entity.reverse_transition_of: |
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for incomingstate in transition.reverse_allowed_transition: |
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yield incomingstate.eid, transition.eid, transition |
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yield transition.eid, transition.destination().eid, transition |
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|
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|
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class WorkflowImageView(TmpFileViewMixin, view.EntityView): |
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__regid__ = 'wfgraph' |
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__select__ = implements('Workflow') |
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content_type = 'image/png' |
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def _generate(self, tmpfile): |
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"""display schema information for an entity""" |
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entity = self.cw_rset.get_entity(self.cw_row, self.cw_col) |
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visitor = WorkflowVisitor(entity) |
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prophdlr = WorkflowDotPropsHandler(self._cw) |
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generator = GraphGenerator(DotBackend('workflow', 'LR', |
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ratio='compress', size='30,12')) |
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return generator.generate(visitor, prophdlr, tmpfile) |
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