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         fields = pool.get(res_model).fields_get(cr, uid, context=context)
  77
  78         def get_resource_info(node):
  79             ret = False
  80
  81             for name, field in fields.items():
  82                 if node.model_id and field.get('relation', False) == node.model_id.model and current_object[name]:
  83                     rel = current_object[name][0]
  84                     ret = {}
  85                     ret['name'] = rel.name_get(context)[0][1]
  86                     ret['model'] = field['relation']
  87                     ret['id'] = rel.id
  88
  89             return ret
  90
  91         nodes = {}
  92         start = []
  93         transitions = {}
  94
  95         for node in process.node_ids:
  96             data = {}
  97             data['name'] = node.name
  98             data['model'] = (node.model_id or None) and node.model_id.model
  99             data['kind'] = node.kind
 100             data['subflow'] = (node.subflow_id or None) and node.subflow_id.id
 101             data['notes'] = node.note
 102             data['active'] = False
 103             data['gray'] = False
 104             data['res'] = get_resource_info(node)
 105
 106             if node.menu_id:
 107                 data['menu'] = {'name': node.menu_id.complete_name, 'id': node.menu_id.id}
 108
 109             if node.model_id and node.model_id.model == res_model:
 110
 111                 data['res'] = resource = {}
 112                 resource['name'] = current_object.name_get(context)[0][1]
 113                 resource['model'] = res_model
 114                 resource['id'] = res_id
 115
 116                 try:
 117                     data['active'] = eval(node.model_states, expr_context)
 118                 except Exception, e:
 119                     # waring: invalid state expression
 120                     pass
 121
 122             if not data['active']:
 123                 try:
 124                     gray = True
 125                     for cond in node.condition_ids:
 126                         if cond.model_id and cond.model_id.model == res_model:
 127                             gray = gray and eval(cond.model_states, expr_context)
 128                     data['gray'] = not gray
 129                 except:
 130                     pass
 131
 132             nodes[node.id] = data
 133             if node.flow_start:
 134                 start.append(node.id)
 135
 136             for tr in node.transition_out:
 137                 data = {}
 138                 data['name'] = tr.name
 139                 data['source'] = tr.source_node_id.id
 140                 data['target'] = tr.target_node_id.id
 141                 data['notes'] = tr.note
 142                 data['buttons'] = buttons = []
 143                 for b in tr.action_ids:
 144                     button = {}
 145                     button['name'] = b.name
 146                     button['state'] = b.state
 147                     button['action'] = b.action
 148                     buttons.append(button)
 149                 data['roles'] = roles = []
 150                 for r in tr.transition_ids:
 151                     if r.role_id:
 152                         role = {}
 153                         role['name'] = r.role_id.name
 154                         roles.append(role)
 155                 transitions[tr.id] = data
 156
 157         g = tools.graph(nodes.keys(), map(lambda x: (x['source'], x['target']), transitions.values()))
 158         g.process(start)
 159         #g.scale(100, 100, 180, 120)
 160         g.scale(*scale)
 161         graph = g.result_get()
 162         miny = -1
 163
 164         for k,v in nodes.items():
 165             x = graph[k]['y']
 166             y = graph[k]['x']
 167             if miny == -1:
 168                 miny = y
 169             miny = min(y, miny)
 170             v['x'] = x
 171             v['y'] = y
 172
 173         for k, v in nodes.items():
 174             y = v['y']
 175             v['y'] = min(y - miny + 10, y)
 176         return dict(nodes=nodes, transitions=transitions)
 177
 178 process_process()
 179
 180 class process_node(osv.osv):
 181     _name = 'process.node'
 182     _description ='Process Nodes'
 183     _columns = {
 184         'name': fields.char('Name', size=30,required=True, translate=True),
 185         'process_id': fields.many2one('process.process', 'Process', required=True, ondelete='cascade'),
 186         'kind': fields.selection([('state','State'), ('subflow','Subflow')], 'Kind of Node', required=True),
 187         'menu_id': fields.many2one('ir.ui.menu', 'Related Menu'),
 188         'note': fields.text('Notes', translate=True),
 189         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 190         'model_states': fields.char('States Expression', size=128),
 191         'subflow_id': fields.many2one('process.process', 'Subflow', ondelete='set null'),
 192         'flow_start': fields.boolean('Starting Flow'),
 193         'transition_in': fields.one2many('process.transition', 'target_node_id', 'Starting Transitions'),
 194         'transition_out': fields.one2many('process.transition', 'source_node_id', 'Ending Transitions'),
 195         'condition_ids': fields.one2many('process.condition', 'node_id', 'Conditions')
 196     }
 197     _defaults = {
 198         'kind': lambda *args: 'state',
 199         'model_states': lambda *args: False,
 200         'flow_start': lambda *args: False,
 201     }
 202 process_node()
 203
 204 class process_node_condition(osv.osv):
 205     _name = 'process.condition'
 206     _description = 'Condition'
 207     _columns = {
 208         'name': fields.char('Name', size=30, required=True),
 209         'node_id': fields.many2one('process.node', 'Node', required=True, ondelete='cascade'),
 210         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 211         'model_states': fields.char('Expression', required=True, size=128)
 212     }
 213 process_node_condition()
 214
 215 class process_transition(osv.osv):
 216     _name = 'process.transition'
 217     _description ='Process Transitions'
 218     _columns = {
 219         'name': fields.char('Name', size=32, required=True, translate=True),
 220         'source_node_id': fields.many2one('process.node', 'Source Node', required=True, ondelete='cascade'),
 221         'target_node_id': fields.many2one('process.node', 'Target Node', required=True, ondelete='cascade'),
 222         'action_ids': fields.one2many('process.transition.action', 'transition_id', 'Buttons'),
 223         'transition_ids': fields.many2many('workflow.transition', 'process_transition_ids', 'ptr_id', 'wtr_id', 'Workflow Transitions'),
 224         'note': fields.text('Description', translate=True),
 225     }
 226 process_transition()
 227
 228 class process_transition_action(osv.osv):
 229     _name = 'process.transition.action'
 230     _description ='Process Transitions Actions'
 231     _columns = {
 232         'name': fields.char('Name', size=32, required=True, translate=True),
 233         'state': fields.selection([('dummy','Dummy'),
 234                                    ('object','Object Method'),
 235                                    ('workflow','Workflow Trigger'),
 236                                    ('action','Action')], 'Type', required=True),
 237         'action': fields.char('Action ID', size=64, states={
 238             'dummy':[('readonly',1)],
 239             'object':[('required',1)],
 240             'workflow':[('required',1)],
 241             'action':[('required',1)],
 242         },),
 243         'transition_id': fields.many2one('process.transition', 'Transition', required=True, ondelete='cascade')
 244     }
 245     _defaults = {
 246         'state': lambda *args: 'dummy',
 247     }
 248 process_transition_action()
 249