Process node conditions.

bzr revid: ame@tinyerp.com-20080918083245-wya7jfes1s92cs9k

addons/process/process.py

@@ -31,6 +31,17 @@ import pooler, tools
 
 from osv import fields, osv
 
+class Env(dict):
+
+    def __init__(self, parent):
+        self.__parent = parent
+
+    def __getitem__(self, name):
+        if name == '__parent':
+            return super(Env, self).__getitem__(name)
+
+        return self.__parent[name]
+
 class process_process(osv.osv):
     _name = "process.process"
     _description = "Process"
@@ -46,34 +57,40 @@ class process_process(osv.osv):
 
     def graph_get(self, cr, uid, id, res_model, res_id, scale, context):
         pool = pooler.get_pool(cr.dbname)
+        
         process = pool.get('process.process').browse(cr, uid, [id])[0]
         current_object = pool.get(res_model).browse(cr, uid, [res_id])[0]
+        
         nodes = {}
         start = []
         transitions = {}
+
         for node in process.node_ids:
-
             data = {}
-
             data['name'] = node.name
             data['menu'] = (node.menu_id or None) and node.menu_id.name
             data['model'] = (node.model_id or None) and node.model_id.model
             data['kind'] = node.kind
             data['notes'] = node.note
             data['active'] = 0
-
+            data['gray'] = 0
+            
             if node.kind == "state" and node.model_id and node.model_id.model == res_model:
-                states = node.model_states
-                states = (states or []) and states.split(',')
-                data['active'] = not states or current_object.state in states
-
-            elif node.kind == "router":
-                #TODO:
-                pass
-
-            elif node.kind == "subflow":
-                #TODO: subflow
-                pass
+                try:
+                    data['active'] = eval(node.model_states, Env(current_object));
+                except Exception, e:
+                    # waring: invalid state expression
+                    pass
+                
+            if not data['active']:
+                try:
+                    gray = False
+                    for cond in node.condition_ids:
+                        if cond.model_id and cond.model_id.model == res_model:
+                            gray = gray or eval(cond.model_states, Env(current_object))
+                    data['gray'] = gray
+                except:
+                    pass
 
             nodes[node.id] = data
             if node.flow_start:
@@ -129,7 +146,7 @@ class process_node(osv.osv):
     _columns = {
         'name': fields.char('Name', size=30,required=True),
         'process_id': fields.many2one('process.process', 'Process', required=True),
-        'kind': fields.selection([('state','State'),('router','Router'),('subflow','Subflow')],'Kind of Node', required=True),
+        'kind': fields.selection([('state','State'), ('subflow','Subflow')], 'Kind of Node', required=True),
         'menu_id': fields.many2one('ir.ui.menu', 'Related Menu'),
         'note': fields.text('Notes'),
         'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
@@ -137,6 +154,7 @@ class process_node(osv.osv):
         'flow_start': fields.boolean('Starting Flow'),
         'transition_in': fields.one2many('process.transition', 'target_node_id', 'Starting Transitions'),
         'transition_out': fields.one2many('process.transition', 'source_node_id', 'Ending Transitions'),
+        'condition_ids': fields.one2many('process.condition', 'node_id', 'Conditions')
     }
     _defaults = {
         'kind': lambda *args: 'state',
@@ -145,6 +163,17 @@ class process_node(osv.osv):
     }
 process_node()
 
+class process_node_condition(osv.osv):
+    _name = 'process.condition'
+    _description = 'Condition'
+    _columns = {
+        'name': fields.char('Name', size=30, required=True),
+        'node_id': fields.many2one('process.node', 'Node', required=True),
+        'model_id': fields.many2one('ir.model', 'Object', ondelete='set null'),
+        'model_states': fields.char('Expression', required=True, size=128)
+    }
+process_node_condition()
+
 class process_transition(osv.osv):
     _name = 'process.transition'
     _description ='Process Transitions'

addons/process/process_view.xml

@@ -71,6 +71,21 @@
                                             </form>
                                         </field>
                                     </page>
+                                    <page string="Conditions">
+                                        <field name="condition_ids" nolabel="1" colspan="4">
+                                            <tree string="Conditions">
+                                                <field name="name"/>
+                                                <field name="model_id"/>
+                                                <field name="model_states"/>
+                                            </tree>
+                                            <form string="Condition">
+                                                <field name="name"/>
+                                                <field name="model_id"/>
+                                                <newline/>
+                                                <field name="model_states" colspan="4"/>
+                                            </form>
+                                        </field>
+                                    </page>
                                     <page string="Extra Information">
                                         <field name="note" nolabel="1" colspan="4"/>
                                     </page>