From 6b7e6f6b9089e0fb72e17a18be3d3d738bd46adc Mon Sep 17 00:00:00 2001
From: Nicolas Martinelli <nim@odoo.com>
Date: Fri, 15 May 2015 15:47:35 +0200
Subject: [PATCH] [ADD] stock: onchange on wizard stock_change_product_qty

The proposed value for the new quantity on hand is calculated for the chosen
warehouse.

opw-639641
---
 addons/stock/wizard/stock_change_product_qty.py       | 8 ++++++++
 addons/stock/wizard/stock_change_product_qty_view.xml | 4 ++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/addons/stock/wizard/stock_change_product_qty.py b/addons/stock/wizard/stock_change_product_qty.py
index 9c495106a2f..a1e7e39e49a 100644
--- a/addons/stock/wizard/stock_change_product_qty.py
+++ b/addons/stock/wizard/stock_change_product_qty.py
@@ -120,4 +120,12 @@ class stock_change_product_qty(osv.osv_memory):
             inventory_obj.action_done(cr, uid, [inventory_id], context=context)
         return {}
 
+    def onchange_location_id(self, cr, uid, ids, location_id, product_id, context=None):
+        if location_id:
+            qty_wh = 0.0
+            qty = self.pool.get('product.product')._product_available(cr, uid, [product_id], context=dict(context or {}, location=location_id))
+            if product_id in qty:
+                qty_wh = qty[product_id]['qty_available']
+            return { 'value': { 'new_quantity': qty_wh } }
+
 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
diff --git a/addons/stock/wizard/stock_change_product_qty_view.xml b/addons/stock/wizard/stock_change_product_qty_view.xml
index 7c11189d1c3..4bf556fcaef 100644
--- a/addons/stock/wizard/stock_change_product_qty_view.xml
+++ b/addons/stock/wizard/stock_change_product_qty_view.xml
@@ -7,9 +7,9 @@
             <field name="arch" type="xml">
                 <form string="Update Product Quantity">
                     <group>
-                        <field name="new_quantity" />
                         <field name="product_id" invisible="1"/>
-                        <field name="location_id" groups="stock.group_locations"/>
+                        <field name="location_id" groups="stock.group_locations" on_change="onchange_location_id(location_id, product_id, context)"/>
+                        <field name="new_quantity"/>
                         <field name="lot_id"  context="{'search_default_product_id':product_id,'default_product_id':product_id}" groups="stock.group_production_lot"/>
                         <p groups="stock.group_production_lot" class="oe_grey">
                             When you select a serial number (lot), the quantity is corrected with respect to