[FIX] stock: prevent transfer of picking

In a large warehouse, it can happen that two users try to transfer the
same picking at the same time.

opw-668725

addons/stock/i18n/stock.pot

@@ -4941,6 +4941,12 @@ msgstr ""
 msgid "Types of Operation"
 msgstr ""
 
+#. module: stock
+#: code:addons/stock/stock.py:663
+#, python-format
+msgid "Under no circumstances should you delete or change quants yourselves!"
+msgstr ""
+
 #. module: stock
 #: help:stock.production.lot,name:0
 msgid "Unique Serial Number"
@@ -5315,7 +5321,13 @@ msgid "You cannot cancel a stock move that has been set to 'Done'."
 msgstr ""
 
 #. module: stock
-#: code:addons/stock/stock.py:638
+#: code:addons/stock/stock.py:2958
+#, python-format
+msgid "You cannot have two inventory adjustements in state 'in Progess' with the same product(%s), same location(%s), same package, same owner and same lot. Please first validate the first inventory adjustement with this product before creating another one."
+msgstr ""
+
+#. module: stock
+#: code:addons/stock/stock.py:657
 #, python-format
 msgid "You cannot move to a location of type view %s."
 msgstr ""
@@ -5340,7 +5352,13 @@ msgid "You cannot split a move done"
 msgstr ""
 
 #. module: stock
-#: code:addons/stock/wizard/stock_return_picking.py:132
+#: code:addons/stock/wizard/stock_transfer_details.py:79
+#, python-format
+msgid "You cannot transfer a picking in state '%s'."
+msgstr ""
+
+#. module: stock
+#: code:addons/stock/wizard/stock_return_picking.py:135
 #, python-format
 msgid "You have manually created product lines, please delete them to proceed"
 msgstr ""

addons/stock/wizard/stock_transfer_details.py

@@ -20,6 +20,7 @@
 ##############################################################################
 
 from openerp import models, fields, api
+from openerp.exceptions import Warning
 from openerp.tools.translate import _
 import openerp.addons.decimal_precision as dp
 from datetime import datetime
@@ -74,6 +75,9 @@ class stock_transfer_details(models.TransientModel):
 
     @api.one
     def do_detailed_transfer(self):
+        if self.picking_id.state not in ['assigned', 'partially_available']:
+            raise Warning(_('You cannot transfer a picking in state \'%s\'.') % self.picking_id.state)
+
         processed_ids = []
         # Create new and update existing pack operations
         for lstits in [self.item_ids, self.packop_ids]: