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         pool = pooler.get_pool(cr.dbname)
  68
  69         process = pool.get('process.process').browse(cr, uid, [id])[0]
  70         current_object = pool.get(res_model).browse(cr, uid, [res_id], context)[0]
  71         current_user = pool.get('res.users').browse(cr, uid, [uid], context)[0]
  72
  73         expr_context = Env(current_object, current_user)
  74
  75         nodes = {}
  76         start = []
  77         transitions = {}
  78
  79         for node in process.node_ids:
  80             data = {}
  81             data['name'] = node.name
  82             data['model'] = (node.model_id or None) and node.model_id.model
  83             data['kind'] = node.kind
  84             data['subflow'] = (node.subflow_id or None) and node.subflow_id.id
  85             data['notes'] = node.note
  86             data['active'] = 0
  87             data['gray'] = 0
  88
  89             if node.menu_id:
  90                 data['menu'] = {'name': node.menu_id.complete_name, 'id': node.menu_id.id}
  91
  92             if node.kind == "state" and node.model_id and node.model_id.model == res_model:
  93                 try:
  94                     if eval(node.model_states, expr_context):
  95                         data['active'] = current_object.name_get(context)[0][1]
  96                 except Exception, e:
  97                     # waring: invalid state expression
  98                     pass
  99
 100             if not data['active']:
 101                 try:
 102                     gray = True
 103                     for cond in node.condition_ids:
 104                         if cond.model_id and cond.model_id.model == res_model:
 105                             gray = gray and eval(cond.model_states, expr_context)
 106                     data['gray'] = not gray
 107                 except:
 108                     pass
 109
 110             nodes[node.id] = data
 111             if node.flow_start:
 112                 start.append(node.id)
 113
 114             for tr in node.transition_out:
 115                 data = {}
 116                 data['name'] = tr.name
 117                 data['source'] = tr.source_node_id.id
 118                 data['target'] = tr.target_node_id.id
 119                 data['notes'] = tr.note
 120                 data['buttons'] = buttons = []
 121                 for b in tr.action_ids:
 122                     button = {}
 123                     button['name'] = b.name
 124                     button['state'] = b.state
 125                     button['action'] = b.action
 126                     buttons.append(button)
 127                 data['roles'] = roles = []
 128                 for r in tr.transition_ids:
 129                     if r.role_id:
 130                         role = {}
 131                         role['name'] = r.role_id.name
 132                         roles.append(role)
 133                 transitions[tr.id] = data
 134
 135         g = tools.graph(nodes.keys(), map(lambda x: (x['source'], x['target']), transitions.values()))
 136         g.process(start)
 137         #g.scale(100, 100, 180, 120)
 138         g.scale(*scale)
 139         graph = g.result_get()
 140         miny = -1
 141
 142         for k,v in nodes.items():
 143             x = graph[k]['y']
 144             y = graph[k]['x']
 145             if miny == -1:
 146                 miny = y
 147             miny = min(y, miny)
 148             v['x'] = x
 149             v['y'] = y
 150
 151         for k, v in nodes.items():
 152             y = v['y']
 153             v['y'] = min(y - miny + 10, y)
 154         return dict(nodes=nodes, transitions=transitions)
 155
 156 process_process()
 157
 158 class process_node(osv.osv):
 159     _name = 'process.node'
 160     _description ='Process Nodes'
 161     _columns = {
 162         'name': fields.char('Name', size=30,required=True, translate=True),
 163         'process_id': fields.many2one('process.process', 'Process', required=True, ondelete='cascade'),
 164         'kind': fields.selection([('state','State'), ('subflow','Subflow')], 'Kind of Node', required=True),
 165         'menu_id': fields.many2one('ir.ui.menu', 'Related Menu'),
 166         'note': fields.text('Notes', translate=True),
 167         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 168         'model_states': fields.char('States Expression', size=128),
 169         'subflow_id': fields.many2one('process.process', 'Subflow', ondelete='set null'),
 170         'flow_start': fields.boolean('Starting Flow'),
 171         'transition_in': fields.one2many('process.transition', 'target_node_id', 'Starting Transitions'),
 172         'transition_out': fields.one2many('process.transition', 'source_node_id', 'Ending Transitions'),
 173         'condition_ids': fields.one2many('process.condition', 'node_id', 'Conditions')
 174     }
 175     _defaults = {
 176         'kind': lambda *args: 'state',
 177         'model_states': lambda *args: False,
 178         'flow_start': lambda *args: False,
 179     }
 180 process_node()
 181
 182 class process_node_condition(osv.osv):
 183     _name = 'process.condition'
 184     _description = 'Condition'
 185     _columns = {
 186         'name': fields.char('Name', size=30, required=True),
 187         'node_id': fields.many2one('process.node', 'Node', required=True, ondelete='cascade'),
 188         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 189         'model_states': fields.char('Expression', required=True, size=128)
 190     }
 191 process_node_condition()
 192
 193 class process_transition(osv.osv):
 194     _name = 'process.transition'
 195     _description ='Process Transitions'
 196     _columns = {
 197         'name': fields.char('Name', size=32, required=True, translate=True),
 198         'source_node_id': fields.many2one('process.node', 'Source Node', required=True, ondelete='cascade'),
 199         'target_node_id': fields.many2one('process.node', 'Target Node', required=True, ondelete='cascade'),
 200         'action_ids': fields.one2many('process.transition.action', 'transition_id', 'Buttons'),
 201         'transition_ids': fields.many2many('workflow.transition', 'process_transition_ids', 'ptr_id', 'wtr_id', 'Workflow Transitions'),
 202         'note': fields.text('Description', translate=True),
 203     }
 204 process_transition()
 205
 206 class process_transition_action(osv.osv):
 207     _name = 'process.transition.action'
 208     _description ='Process Transitions Actions'
 209     _columns = {
 210         'name': fields.char('Name', size=32, required=True, translate=True),
 211         'state': fields.selection([('dummy','Dummy'),
 212                                    ('object','Object Method'),
 213                                    ('workflow','Workflow Trigger'),
 214                                    ('action','Action')], 'Type', required=True),
 215         'action': fields.char('Action ID', size=64, states={
 216             'dummy':[('readonly',1)],
 217             'object':[('required',1)],
 218             'workflow':[('required',1)],
 219             'action':[('required',1)],
 220         },),
 221         'transition_id': fields.many2one('process.transition', 'Transition', required=True, ondelete='cascade')
 222     }
 223     _defaults = {
 224         'state': lambda *args: 'dummy',
 225     }
 226 process_transition_action()
 227