text: # -*- coding: utf-8 -*-
  ##############################################################################
  #
  #    OpenERP, Open Source Management Solution
  #    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
  #
  #    This program is free software: you can redistribute it and/or modify
  #    it under the terms of the GNU Affero General Public License as
  #    published by the Free Software Foundation, either version 3 of the
  #    License, or (at your option) any later version.
  #
  #    This program is distributed in the hope that it will be useful,
  #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  #    GNU Affero General Public License for more details.
  #
  #    You should have received a copy of the GNU Affero General Public License
  #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  #
  ##############################################################################
  
  from openerp.osv import fields, osv, orm
  import openerp.addons.decimal_precision as dp
  from openerp.tools.translate import _
  from openerp import tools
  
  class stock_change_product_qty(osv.osv_memory):
      _name = "stock.change.product.qty"
      _description = "Change Product Quantity"
      _columns = {
          'product_id' : fields.many2one('product.product', 'Product'),
          'new_quantity': fields.float('New Quantity on Hand', digits_compute=dp.get_precision('Product Unit of Measure'), required=True, help='This quantity is expressed in the Default Unit of Measure of the product.'),
          'lot_id': fields.many2one('stock.production.lot', 'Serial Number', domain="[('product_id','=',product_id)]"),
          'location_id': fields.many2one('stock.location', 'Location', required=True, domain="[('usage', '=', 'internal')]"),
      }
      _defaults = {
          'new_quantity': 1,
          'product_id': lambda self, cr, uid, ctx: ctx and ctx.get('active_id', False) or False
      }
  
      def default_get(self, cr, uid, fields, context):
          """ To get default values for the object.
           @param self: The object pointer.
           @param cr: A database cursor
           @param uid: ID of the user currently logged in
           @param fields: List of fields for which we want default values
           @param context: A standard dictionary
           @return: A dictionary which of fields with values.
          """
  
          res = super(stock_change_product_qty, self).default_get(cr, uid, fields, context=context)
  
          if context.get('active_model') == 'product.template':
              product_ids = self.pool.get('product.product').search(cr, uid, [('product_tmpl_id', '=', context.get('active_id'))], context=context)
              if len(product_ids) == 1:
                  res['product_id'] = product_ids[0]
              else:
                  raise orm.except_orm(_('Warning'), _('Please use the Product Variant view to update the product quantity.'))
  
          if 'location_id' in fields:
              location_id = res.get('location_id', False)
              if not location_id:
                  try:
                      model, location_id = self.pool.get('ir.model.data').get_object_reference(cr, uid, 'stock', 'stock_location_stock')
                  except (orm.except_orm, ValueError):
                      pass
              if location_id:
                  try:
                      self.pool.get('stock.location').check_access_rule(cr, uid, [location_id], 'read', context=context)
                  except (orm.except_orm, ValueError):
                     pass
              res['location_id'] = location_id
          return res
  
      def change_product_qty(self, cr, uid, ids, context=None):
          """ Changes the Product Quantity by making a Physical Inventory.
          @param self: The object pointer.
          @param cr: A database cursor
          @param uid: ID of the user currently logged in
          @param ids: List of IDs selected
          @param context: A standard dictionary
          @return:
          """
          if context is None:
              context = {}
  
          inventory_obj = self.pool.get('stock.inventory')
          inventory_line_obj = self.pool.get('stock.inventory.line')
  
          for data in self.browse(cr, uid, ids, context=context):
              if data.new_quantity < 0:
                  raise osv.except_osv(_('Warning!'), _('Quantity cannot be negative.'))
              ctx = context.copy()
              ctx['location'] = data.location_id.id
              ctx['lot_id'] = data.lot_id.id
              inventory_id = inventory_obj.create(cr, uid, {
                  'name': _('INV: %s') % tools.ustr(data.product_id.name),
                  'product_id': data.product_id.id,
                  'location_id': data.location_id.id,
                  'lot_id': data.lot_id.id}, context=context)
              product = data.product_id.with_context(location=data.location_id.id)
              th_qty = product.qty_available
              line_data = {
                  'inventory_id': inventory_id,
                  'product_qty': data.new_quantity,
                  'location_id': data.location_id.id,
                  'product_id': data.product_id.id,
                  'product_uom_id': data.product_id.uom_id.id,
                  'theoretical_qty': th_qty,
                  'prod_lot_id': data.lot_id.id
              }
              inventory_line_obj.create(cr , uid, line_data, context=context)
              inventory_obj.action_done(cr, uid, [inventory_id], context=context)
          return {}
  
  # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
  