addons/process/process.py

   1 # -*- encoding: utf-8 -*-
   2 ##############################################################################
   3 #
   4 # Copyright (c) 2005-TODAY TINY SPRL. (http://tiny.be) All Rights Reserved.
   5 #
   6 # WARNING: This program as such is intended to be used by professional
   7 # programmers who take the whole responsability of assessing all potential
   8 # consequences resulting from its eventual inadequacies and bugs
   9 # End users who are looking for a ready-to-use solution with commercial
  10 # garantees and support are strongly adviced to contract a Free Software
  11 # Service Company
  12 #
  13 # This program is Free Software; you can redistribute it and/or
  14 # modify it under the terms of the GNU General Public License
  15 # as published by the Free Software Foundation; either version 2
  16 # of the License, or (at your option) any later version.
  17 #
  18 # This program is distributed in the hope that it will be useful,
  19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 # GNU General Public License for more details.
  22 #
  23 # You should have received a copy of the GNU General Public License
  24 # along with this program; if not, write to the Free Software
  25 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  26 #
  27 ##############################################################################
  28
  29 import netsvc
  30 import pooler, tools
  31
  32 from osv import fields, osv
  33
  34 class Env(dict):
  35
  36     def __init__(self, obj, user):
  37         self.__obj = obj
  38         self.__usr = user
  39
  40     def __getitem__(self, name):
  41
  42         if name in ('__obj', '__user'):
  43             return super(ExprContext, self).__getitem__(name)
  44
  45         if name == 'user':
  46             return self.__user
  47
  48         if name == 'object':
  49             return self.__obj
  50
  51         return self.__obj[name]
  52
  53 class process_process(osv.osv):
  54     _name = "process.process"
  55     _description = "Process"
  56     _columns = {
  57         'name': fields.char('Name', size=30,required=True, translate=True),
  58         'active': fields.boolean('Active'),
  59         'note': fields.text('Notes', translate=True),
  60         'node_ids': fields.one2many('process.node', 'process_id', 'Nodes')
  61     }
  62     _defaults = {
  63         'active' : lambda *a: True,
  64     }
  65
  66     def graph_get(self, cr, uid, id, res_model, res_id, scale, context):
  67
  68         pool = pooler.get_pool(cr.dbname)
  69
  70         process = pool.get('process.process').browse(cr, uid, [id])[0]
  71         current_object = pool.get(res_model).browse(cr, uid, [res_id], context)[0]
  72         current_user = pool.get('res.users').browse(cr, uid, [uid], context)[0]
  73
  74         expr_context = Env(current_object, current_user)
  75
  76         def get_resource_info(node):
  77             ret = False
  78
  79             src_model = res_model
  80             src_id = res_id
  81
  82             if node.transition_in:
  83                 tr = node.transition_in[0]
  84                 src = nodes.get(tr.source_node_id.id)
  85                 if src['res']:
  86                     src_model = src['res']['model']
  87                     src_id = src['res']['id']
  88                 else:
  89                     return False
  90
  91             fields = pool.get(src_model).fields_get(cr, uid, context=context)
  92
  93             for name, field in fields.items():
  94                 if node.model_id and field.get('relation', False) == node.model_id.model:
  95                     src_obj = pool.get(src_model).browse(cr, uid, [src_id], context)[0]
  96                     rel = src_obj[name]
  97                     if rel:
  98                         if isinstance(rel, (list, tuple)):
  99                             rel = rel[0]
 100                         ret = {}
 101                         ret['name'] = rel.name_get(context)[0][1]
 102                         ret['model'] = field['relation']
 103                         ret['id'] = rel.id
 104
 105             return ret
 106
 107         nodes = {}
 108         start = []
 109         transitions = {}
 110
 111         for node in process.node_ids:
 112             data = {}
 113             data['name'] = node.name
 114             data['model'] = (node.model_id or None) and node.model_id.model
 115             data['kind'] = node.kind
 116             data['subflow'] = (node.subflow_id or None) and node.subflow_id.id
 117             data['notes'] = node.note
 118             data['active'] = False
 119             data['gray'] = False
 120             data['res'] = get_resource_info(node)
 121
 122             if node.menu_id:
 123                 data['menu'] = {'name': node.menu_id.complete_name, 'id': node.menu_id.id}
 124
 125             if node.model_id and node.model_id.model == res_model:
 126
 127                 data['res'] = resource = {}
 128                 resource['name'] = current_object.name_get(context)[0][1]
 129                 resource['model'] = res_model
 130                 resource['id'] = res_id
 131
 132                 try:
 133                     data['active'] = eval(node.model_states, expr_context)
 134                 except Exception, e:
 135                     # waring: invalid state expression
 136                     pass
 137
 138             if not data['active']:
 139                 try:
 140                     gray = True
 141                     for cond in node.condition_ids:
 142                         if cond.model_id and cond.model_id.model == res_model:
 143                             gray = gray and eval(cond.model_states, expr_context)
 144                     data['gray'] = not gray
 145                 except:
 146                     pass
 147
 148             nodes[node.id] = data
 149             if node.flow_start:
 150                 start.append(node.id)
 151
 152             for tr in node.transition_out:
 153                 data = {}
 154                 data['name'] = tr.name
 155                 data['source'] = tr.source_node_id.id
 156                 data['target'] = tr.target_node_id.id
 157                 data['notes'] = tr.note
 158                 data['buttons'] = buttons = []
 159                 for b in tr.action_ids:
 160                     button = {}
 161                     button['name'] = b.name
 162                     button['state'] = b.state
 163                     button['action'] = b.action
 164                     buttons.append(button)
 165                 data['roles'] = roles = []
 166                 for r in tr.transition_ids:
 167                     if r.role_id:
 168                         role = {}
 169                         role['name'] = r.role_id.name
 170                         roles.append(role)
 171                 transitions[tr.id] = data
 172
 173         g = tools.graph(nodes.keys(), map(lambda x: (x['source'], x['target']), transitions.values()))
 174         g.process(start)
 175         #g.scale(100, 100, 180, 120)
 176         g.scale(*scale)
 177         graph = g.result_get()
 178         miny = -1
 179
 180         for k,v in nodes.items():
 181             x = graph[k]['y']
 182             y = graph[k]['x']
 183             if miny == -1:
 184                 miny = y
 185             miny = min(y, miny)
 186             v['x'] = x
 187             v['y'] = y
 188
 189         for k, v in nodes.items():
 190             y = v['y']
 191             v['y'] = min(y - miny + 10, y)
 192         return dict(nodes=nodes, transitions=transitions)
 193
 194 process_process()
 195
 196 class process_node(osv.osv):
 197     _name = 'process.node'
 198     _description ='Process Nodes'
 199     _columns = {
 200         'name': fields.char('Name', size=30,required=True, translate=True),
 201         'process_id': fields.many2one('process.process', 'Process', required=True, ondelete='cascade'),
 202         'kind': fields.selection([('state','State'), ('subflow','Subflow')], 'Kind of Node', required=True),
 203         'menu_id': fields.many2one('ir.ui.menu', 'Related Menu'),
 204         'note': fields.text('Notes', translate=True),
 205         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 206         'model_states': fields.char('States Expression', size=128),
 207         'subflow_id': fields.many2one('process.process', 'Subflow', ondelete='set null'),
 208         'flow_start': fields.boolean('Starting Flow'),
 209         'transition_in': fields.one2many('process.transition', 'target_node_id', 'Starting Transitions'),
 210         'transition_out': fields.one2many('process.transition', 'source_node_id', 'Ending Transitions'),
 211         'condition_ids': fields.one2many('process.condition', 'node_id', 'Conditions')
 212     }
 213     _defaults = {
 214         'kind': lambda *args: 'state',
 215         'model_states': lambda *args: False,
 216         'flow_start': lambda *args: False,
 217     }
 218 process_node()
 219
 220 class process_node_condition(osv.osv):
 221     _name = 'process.condition'
 222     _description = 'Condition'
 223     _columns = {
 224         'name': fields.char('Name', size=30, required=True),
 225         'node_id': fields.many2one('process.node', 'Node', required=True, ondelete='cascade'),
 226         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 227         'model_states': fields.char('Expression', required=True, size=128)
 228     }
 229 process_node_condition()
 230
 231 class process_transition(osv.osv):
 232     _name = 'process.transition'
 233     _description ='Process Transitions'
 234     _columns = {
 235         'name': fields.char('Name', size=32, required=True, translate=True),
 236         'source_node_id': fields.many2one('process.node', 'Source Node', required=True, ondelete='cascade'),
 237         'target_node_id': fields.many2one('process.node', 'Target Node', required=True, ondelete='cascade'),
 238         'action_ids': fields.one2many('process.transition.action', 'transition_id', 'Buttons'),
 239         'transition_ids': fields.many2many('workflow.transition', 'process_transition_ids', 'ptr_id', 'wtr_id', 'Workflow Transitions'),
 240         'note': fields.text('Description', translate=True),
 241     }
 242 process_transition()
 243
 244 class process_transition_action(osv.osv):
 245     _name = 'process.transition.action'
 246     _description ='Process Transitions Actions'
 247     _columns = {
 248         'name': fields.char('Name', size=32, required=True, translate=True),
 249         'state': fields.selection([('dummy','Dummy'),
 250                                    ('object','Object Method'),
 251                                    ('workflow','Workflow Trigger'),
 252                                    ('action','Action')], 'Type', required=True),
 253         'action': fields.char('Action ID', size=64, states={
 254             'dummy':[('readonly',1)],
 255             'object':[('required',1)],
 256             'workflow':[('required',1)],
 257             'action':[('required',1)],
 258         },),
 259         'transition_id': fields.many2one('process.transition', 'Transition', required=True, ondelete='cascade')
 260     }
 261     _defaults = {
 262         'state': lambda *args: 'dummy',
 263     }
 264 process_transition_action()
 265