addons/process/process.py

   1 # -*- encoding: utf-8 -*-
   2 ##############################################################################
   3 #
   4 #    OpenERP, Open Source Management Solution
   5 #    Copyright (C) 2004-2008 Tiny SPRL (<http://tiny.be>). All Rights Reserved
   6 #    $Id$
   7 #
   8 #    This program is free software: you can redistribute it and/or modify
   9 #    it under the terms of the GNU General Public License as published by
  10 #    the Free Software Foundation, either version 3 of the License, or
  11 #    (at your option) any later version.
  12 #
  13 #    This program is distributed in the hope that it will be useful,
  14 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #    GNU General Public License for more details.
  17 #
  18 #    You should have received a copy of the GNU General Public License
  19 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21 ##############################################################################
  22
  23 import netsvc
  24 import pooler, tools
  25
  26 from osv import fields, osv
  27
  28 class Env(dict):
  29
  30     def __init__(self, obj, user):
  31         self.__obj = obj
  32         self.__usr = user
  33
  34     def __getitem__(self, name):
  35
  36         if name in ('__obj', '__user'):
  37             return super(ExprContext, self).__getitem__(name)
  38
  39         if name == 'user':
  40             return self.__user
  41
  42         if name == 'object':
  43             return self.__obj
  44
  45         return self.__obj[name]
  46
  47 class process_process(osv.osv):
  48     _name = "process.process"
  49     _description = "Process"
  50     _columns = {
  51         'name': fields.char('Name', size=30,required=True, translate=True),
  52         'active': fields.boolean('Active'),
  53         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
  54         'note': fields.text('Notes', translate=True),
  55         'node_ids': fields.one2many('process.node', 'process_id', 'Nodes')
  56     }
  57     _defaults = {
  58         'active' : lambda *a: True,
  59     }
  60
  61     def search_by_model(self, cr, uid, res_model, context):
  62         pool = pooler.get_pool(cr.dbname)
  63         model_ids = (res_model or None) and pool.get('ir.model').search(cr, uid, [('model', '=', res_model)])
  64
  65         domain = (model_ids or []) and [('model_id', 'in', model_ids)]
  66         result = []
  67
  68         # search all processes
  69         res = pool.get('process.process').search(cr, uid, domain)
  70         if res:
  71             res = pool.get('process.process').browse(cr, uid, res, context)
  72             for process in res:
  73                 result.append((process.id, process.name))
  74             return result
  75
  76         # else search process nodes
  77         res = pool.get('process.node').search(cr, uid, domain)
  78         if res:
  79             res = pool.get('process.node').browse(cr, uid, res, context)
  80             for node in res:
  81                 if (node.process_id.id, node.process_id.name) not in result:
  82                     result.append((node.process_id.id, node.process_id.name))
  83
  84         return result
  85
  86     def graph_get(self, cr, uid, id, res_model, res_id, scale, context):
  87
  88         pool = pooler.get_pool(cr.dbname)
  89
  90         process = pool.get('process.process').browse(cr, uid, [id])[0]
  91         title = process.name
  92
  93         expr_context = {}
  94         states = {}
  95         perm = None
  96
  97         if res_model:
  98             states = dict(pool.get(res_model).fields_get(cr, uid, context=context).get('state', {}).get('selection', {}))
  99
 100         if res_id:
 101             current_object = pool.get(res_model).browse(cr, uid, [res_id], context)[0]
 102             current_user = pool.get('res.users').browse(cr, uid, [uid], context)[0]
 103             expr_context = Env(current_object, current_user)
 104             title = _("%s - Resource: %s, State: %s") % (process.name, current_object.name, states.get(getattr(current_object, 'state'), 'N/A'))
 105             perm = pool.get(res_model).perm_read(cr, uid, [res_id], context)[0]
 106
 107         notes = process.note or "N/A"
 108         nodes = {}
 109         start = []
 110         transitions = {}
 111
 112         for node in process.node_ids:
 113             data = {}
 114             data['name'] = node.name
 115             data['model'] = (node.model_id or None) and node.model_id.model
 116             data['kind'] = node.kind
 117             data['subflow'] = (node.subflow_id or False) and [node.subflow_id.id, node.subflow_id.name]
 118             data['notes'] = node.note
 119             data['active'] = False
 120             data['gray'] = False
 121             data['url'] = node.help_url
 122
 123             # get assosiated workflow
 124             if data['model']:
 125                 wkf_ids = self.pool.get('workflow').search(cr, uid, [('osv', '=', data['model'])])
 126                 data['workflow'] = (wkf_ids or False) and wkf_ids[0]
 127
 128             if 'directory_id' in node and node.directory_id:
 129                 data['directory_id'] = node.directory_id.id
 130
 131             if node.menu_id:
 132                 data['menu'] = {'name': node.menu_id.complete_name, 'id': node.menu_id.id}
 133
 134             if node.model_id and node.model_id.model == res_model:
 135                 try:
 136                     data['active'] = eval(node.model_states, expr_context)
 137                 except Exception, e:
 138                     pass
 139
 140             if not data['active']:
 141                 try:
 142                     gray = True
 143                     for cond in node.condition_ids:
 144                         if cond.model_id and cond.model_id.model == res_model:
 145                             gray = gray and eval(cond.model_states, expr_context)
 146                     data['gray'] = not gray
 147                 except:
 148                     pass
 149
 150             nodes[node.id] = data
 151             if node.flow_start:
 152                 start.append(node.id)
 153
 154             for tr in node.transition_out:
 155                 data = {}
 156                 data['name'] = tr.name
 157                 data['source'] = tr.source_node_id.id
 158                 data['target'] = tr.target_node_id.id
 159                 data['notes'] = tr.note
 160                 data['buttons'] = buttons = []
 161                 for b in tr.action_ids:
 162                     button = {}
 163                     button['name'] = b.name
 164                     button['state'] = b.state
 165                     button['action'] = b.action
 166                     buttons.append(button)
 167                 data['roles'] = roles = []
 168                 for r in tr.transition_ids:
 169                     if r.role_id:
 170                         role = {}
 171                         role['name'] = r.role_id.name
 172                         roles.append(role)
 173                 for r in tr.role_ids:
 174                     role = {}
 175                     role['name'] = r.name
 176                     roles.append(role)
 177                 transitions[tr.id] = data
 178
 179         # now populate resource information
 180         def update_relatives(nid, ref_id, ref_model):
 181             relatives = []
 182
 183             for tid, tr in transitions.items():
 184                 if tr['source'] == nid:
 185                     relatives.append(tr['target'])
 186                 if tr['target'] == nid:
 187                     relatives.append(tr['source'])
 188
 189             if not ref_id:
 190                 nodes[nid]['res'] = False
 191                 return
 192
 193             nodes[nid]['res'] = resource = {'id': ref_id, 'model': ref_model}
 194
 195             refobj = pool.get(ref_model).browse(cr, uid, [ref_id], context)[0]
 196             fields = pool.get(ref_model).fields_get(cr, uid, context=context)
 197
 198             # chech for directory_id from inherited from document module
 199             if nodes[nid].get('directory_id', False):
 200                 resource['directory'] = self.pool.get('document.directory').get_resource_path(cr, uid, nodes[nid]['directory_id'], ref_model, ref_id)
 201
 202             resource['name'] = refobj.name_get(context)[0][1]
 203             resource['perm'] = pool.get(ref_model).perm_read(cr, uid, [ref_id], context)[0]
 204
 205             for r in relatives:
 206                 node = nodes[r]
 207                 if 'res' not in node:
 208                     for n, f in fields.items():
 209                         if node['model'] == ref_model:
 210                             update_relatives(r, ref_id, ref_model)
 211
 212                         elif f.get('relation') == node['model']:
 213                             rel = refobj[n]
 214                             if rel and isinstance(rel, list) :
 215                                 rel = rel[0]
 216                             try: # XXX: rel has been reported as string (check it)
 217                                 _id = (rel or False) and rel.id
 218                                 _model = node['model']
 219                                 update_relatives(r, _id, _model)
 220                             except:
 221                                 pass
 222
 223         if res_id:
 224             for nid, node in nodes.items():
 225                 if not node['gray'] and (node['active'] or node['model'] == res_model):
 226                     update_relatives(nid, res_id, res_model)
 227                     break
 228
 229         # calculate graph layout
 230         g = tools.graph(nodes.keys(), map(lambda x: (x['source'], x['target']), transitions.values()))
 231         g.process(start)
 232         g.scale(*scale) #g.scale(100, 100, 180, 120)
 233         graph = g.result_get()
 234
 235         # fix the height problem
 236         miny = -1
 237         for k,v in nodes.items():
 238             x = graph[k]['x']
 239             y = graph[k]['y']
 240             if miny == -1:
 241                 miny = y
 242             miny = min(y, miny)
 243             v['x'] = x
 244             v['y'] = y
 245
 246         for k, v in nodes.items():
 247             y = v['y']
 248             v['y'] = min(y - miny + 10, y)
 249
 250         return dict(title=title, perm=perm, notes=notes, nodes=nodes, transitions=transitions)
 251
 252     def copy(self, cr, uid, id, default=None, context={}):
 253         """ Deep copy the entire process.
 254         """
 255
 256         if not default:
 257             default = {}
 258
 259         pool = pooler.get_pool(cr.dbname)
 260         process = pool.get('process.process').browse(cr, uid, [id], context)[0]
 261
 262         nodes = {}
 263         transitions = {}
 264
 265         # first copy all nodes and and map the new nodes with original for later use in transitions
 266         for node in process.node_ids:
 267             for t in node.transition_in:
 268                 tr = transitions.setdefault(t.id, {})
 269                 tr['target'] = node.id
 270             for t in node.transition_out:
 271                 tr = transitions.setdefault(t.id, {})
 272                 tr['source'] = node.id
 273             nodes[node.id] = pool.get('process.node').copy(cr, uid, node.id, context=context)
 274
 275         # then copy transitions with new nodes
 276         for tid, tr in transitions.items():
 277             vals = {
 278                 'source_node_id': nodes[tr['source']],
 279                 'target_node_id': nodes[tr['target']]
 280             }
 281             tr = pool.get('process.transition').copy(cr, uid, tid, default=vals, context=context)
 282
 283         # and finally copy the process itself with new nodes
 284         default.update({
 285             'active': True,
 286             'node_ids': [(6, 0, nodes.values())]
 287         })
 288         return super(process_process, self).copy(cr, uid, id, default, context)
 289
 290 process_process()
 291
 292 class process_node(osv.osv):
 293     _name = 'process.node'
 294     _description ='Process Nodes'
 295     _columns = {
 296         'name': fields.char('Name', size=30,required=True, translate=True),
 297         'process_id': fields.many2one('process.process', 'Process', required=True, ondelete='cascade'),
 298         'kind': fields.selection([('state','State'), ('subflow','Subflow')], 'Kind of Node', required=True),
 299         'menu_id': fields.many2one('ir.ui.menu', 'Related Menu'),
 300         'note': fields.text('Notes', translate=True),
 301         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 302         'model_states': fields.char('States Expression', size=128),
 303         'subflow_id': fields.many2one('process.process', 'Subflow', ondelete='set null'),
 304         'flow_start': fields.boolean('Starting Flow'),
 305         'transition_in': fields.one2many('process.transition', 'target_node_id', 'Starting Transitions'),
 306         'transition_out': fields.one2many('process.transition', 'source_node_id', 'Ending Transitions'),
 307         'condition_ids': fields.one2many('process.condition', 'node_id', 'Conditions'),
 308         'help_url': fields.char('Help URL', size=255)
 309     }
 310     _defaults = {
 311         'kind': lambda *args: 'state',
 312         'model_states': lambda *args: False,
 313         'flow_start': lambda *args: False,
 314     }
 315
 316     def copy(self, cr, uid, id, default=None, context={}):
 317         if not default:
 318             default = {}
 319         default.update({
 320             'transition_in': [],
 321             'transition_out': []
 322         })
 323         return super(process_node, self).copy(cr, uid, id, default, context)
 324
 325 process_node()
 326
 327 class process_node_condition(osv.osv):
 328     _name = 'process.condition'
 329     _description = 'Condition'
 330     _columns = {
 331         'name': fields.char('Name', size=30, required=True),
 332         'node_id': fields.many2one('process.node', 'Node', required=True, ondelete='cascade'),
 333         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 334         'model_states': fields.char('Expression', required=True, size=128)
 335     }
 336 process_node_condition()
 337
 338 class process_transition(osv.osv):
 339     _name = 'process.transition'
 340     _description ='Process Transitions'
 341     _columns = {
 342         'name': fields.char('Name', size=32, required=True, translate=True),
 343         'source_node_id': fields.many2one('process.node', 'Source Node', required=True, ondelete='cascade'),
 344         'target_node_id': fields.many2one('process.node', 'Target Node', required=True, ondelete='cascade'),
 345         'action_ids': fields.one2many('process.transition.action', 'transition_id', 'Buttons'),
 346         'transition_ids': fields.many2many('workflow.transition', 'process_transition_ids', 'ptr_id', 'wtr_id', 'Workflow Transitions'),
 347         'role_ids': fields.many2many('res.roles', 'process_transition_roles_rel', 'tid', 'rid', 'Roles'),
 348         'note': fields.text('Description', translate=True),
 349     }
 350 process_transition()
 351
 352 class process_transition_action(osv.osv):
 353     _name = 'process.transition.action'
 354     _description ='Process Transitions Actions'
 355     _columns = {
 356         'name': fields.char('Name', size=32, required=True, translate=True),
 357         'state': fields.selection([('dummy','Dummy'),
 358                                    ('object','Object Method'),
 359                                    ('workflow','Workflow Trigger'),
 360                                    ('action','Action')], 'Type', required=True),
 361         'action': fields.char('Action ID', size=64, states={
 362             'dummy':[('readonly',1)],
 363             'object':[('required',1)],
 364             'workflow':[('required',1)],
 365             'action':[('required',1)],
 366         },),
 367         'transition_id': fields.many2one('process.transition', 'Transition', required=True, ondelete='cascade')
 368     }
 369     _defaults = {
 370         'state': lambda *args: 'dummy',
 371     }
 372
 373     def copy(self, cr, uid, id, default=None, context={}):
 374         if not default:
 375             default = {}
 376
 377         state = self.pool.get('process.transition.action').browse(cr, uid, [id], context)[0].state
 378         if state:
 379             default['state'] = state
 380
 381         return super(process_transition_action, self).copy(cr, uid, id, default, context)
 382
 383 process_transition_action()
 384