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),
  58         'active': fields.boolean('Active'),
  59         'note': fields.text('Notes'),
  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['notes'] = node.note
  85             data['active'] = 0
  86             data['gray'] = 0
  87
  88             if node.menu_id:
  89                 data['menu'] = {'name': node.menu_id.complete_name, 'id': node.menu_id.id}
  90
  91             if node.kind == "state" and node.model_id and node.model_id.model == res_model:
  92                 try:
  93                     if eval(node.model_states, expr_context):
  94                         data['active'] = current_object.name_get(context)[0][1]
  95                 except Exception, e:
  96                     # waring: invalid state expression
  97                     pass
  98
  99             if not data['active']:
 100                 try:
 101                     gray = True
 102                     for cond in node.condition_ids:
 103                         if cond.model_id and cond.model_id.model == res_model:
 104                             gray = gray and eval(cond.model_states, expr_context)
 105                     data['gray'] = not gray
 106                 except:
 107                     pass
 108
 109             nodes[node.id] = data
 110             if node.flow_start:
 111                 start.append(node.id)
 112
 113             for tr in node.transition_out:
 114                 data = {}
 115                 data['name'] = tr.name
 116                 data['source'] = tr.source_node_id.id
 117                 data['target'] = tr.target_node_id.id
 118                 data['notes'] = tr.note
 119                 data['buttons'] = buttons = []
 120                 for b in tr.action_ids:
 121                     button = {}
 122                     button['name'] = b.name
 123                     button['state'] = b.state
 124                     button['action'] = b.action
 125                     buttons.append(button)
 126                 data['roles'] = roles = []
 127                 for r in tr.transition_ids:
 128                     if r.role_id:
 129                         role = {}
 130                         role['name'] = r.role_id.name
 131                         roles.append(role)
 132                 transitions[tr.id] = data
 133
 134         g = tools.graph(nodes.keys(), map(lambda x: (x['source'], x['target']), transitions.values()))
 135         g.process(start)
 136         #g.scale(100, 100, 180, 120)
 137         g.scale(*scale)
 138         graph = g.result_get()
 139         miny = -1
 140
 141         for k,v in nodes.items():
 142             x = graph[k]['y']
 143             y = graph[k]['x']
 144             if miny == -1:
 145                 miny = y
 146             miny = min(y, miny)
 147             v['x'] = x
 148             v['y'] = y
 149
 150         for k, v in nodes.items():
 151             y = v['y']
 152             v['y'] = min(y - miny + 10, y)
 153         return dict(nodes=nodes, transitions=transitions)
 154
 155 process_process()
 156
 157 class process_node(osv.osv):
 158     _name = 'process.node'
 159     _description ='Process Nodes'
 160     _columns = {
 161         'name': fields.char('Name', size=30,required=True),
 162         'process_id': fields.many2one('process.process', 'Process', required=True, ondelete='cascade'),
 163         'kind': fields.selection([('state','State'), ('subflow','Subflow')], 'Kind of Node', required=True),
 164         'menu_id': fields.many2one('ir.ui.menu', 'Related Menu'),
 165         'note': fields.text('Notes'),
 166         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 167         'model_states': fields.char('States Expression', size=128),
 168         'flow_start': fields.boolean('Starting Flow'),
 169         'transition_in': fields.one2many('process.transition', 'target_node_id', 'Starting Transitions'),
 170         'transition_out': fields.one2many('process.transition', 'source_node_id', 'Ending Transitions'),
 171         'condition_ids': fields.one2many('process.condition', 'node_id', 'Conditions')
 172     }
 173     _defaults = {
 174         'kind': lambda *args: 'state',
 175         'model_states': lambda *args: False,
 176         'flow_start': lambda *args: False,
 177     }
 178 process_node()
 179
 180 class process_node_condition(osv.osv):
 181     _name = 'process.condition'
 182     _description = 'Condition'
 183     _columns = {
 184         'name': fields.char('Name', size=30, required=True),
 185         'node_id': fields.many2one('process.node', 'Node', required=True, ondelete='cascade'),
 186         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
 187         'model_states': fields.char('Expression', required=True, size=128)
 188     }
 189 process_node_condition()
 190
 191 class process_transition(osv.osv):
 192     _name = 'process.transition'
 193     _description ='Process Transitions'
 194     _columns = {
 195         'name': fields.char('Name', size=32, required=True),
 196         'source_node_id': fields.many2one('process.node', 'Source Node', required=True, ondelete='cascade'),
 197         'target_node_id': fields.many2one('process.node', 'Target Node', required=True, ondelete='cascade'),
 198         'action_ids': fields.one2many('process.transition.action', 'transition_id', 'Buttons'),
 199         'transition_ids': fields.many2many('workflow.transition', 'process_transition_ids', 'ptr_id', 'wtr_id', 'Workflow Transitions'),
 200         'note': fields.text('Description'),
 201     }
 202 process_transition()
 203
 204 class process_transition_action(osv.osv):
 205     _name = 'process.transition.action'
 206     _description ='Process Transitions Actions'
 207     _columns = {
 208         'name': fields.char('Name', size=32, required=True),
 209         'state': fields.selection([('dummy','Dummy'),
 210                                    ('object','Object Method'),
 211                                    ('workflow','Workflow Trigger'),
 212                                    ('action','Action')], 'Type', required=True),
 213         'action': fields.char('Action ID', size=64, states={
 214             'dummy':[('readonly',1)],
 215             'object':[('required',1)],
 216             'workflow':[('required',1)],
 217             'action':[('required',1)],
 218         },),
 219         'transition_id': fields.many2one('process.transition', 'Transition', required=True, ondelete='cascade')
 220     }
 221     _defaults = {
 222         'state': lambda *args: 'dummy',
 223     }
 224 process_transition_action()
 225