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
  from openerp.tools.translate import _
  import openerp.addons.decimal_precision as dp
  
  class change_production_qty(osv.osv_memory):
      _name = 'change.production.qty'
      _description = 'Change Quantity of Products'
  
      _columns = {
          'product_qty': fields.float('Product Qty', digits_compute=dp.get_precision('Product Unit of Measure'), required=True),
      }
  
      def default_get(self, cr, uid, fields, context=None):
          """ 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.
          """
          if context is None:
              context = {}
          res = super(change_production_qty, self).default_get(cr, uid, fields, context=context)
          prod_obj = self.pool.get('mrp.production')
          prod = prod_obj.browse(cr, uid, context.get('active_id'), context=context)
          if 'product_qty' in fields:
              res.update({'product_qty': prod.product_qty})
          return res
  
      def _update_product_to_produce(self, cr, uid, prod, qty, context=None):
          move_lines_obj = self.pool.get('stock.move')
          for m in prod.move_created_ids:
              move_lines_obj.write(cr, uid, [m.id], {'product_uom_qty': qty})
  
      def change_prod_qty(self, cr, uid, ids, context=None):
          """
          Changes the Quantity of Product.
          @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:
          """
          record_id = context and context.get('active_id',False)
          assert record_id, _('Active Id not found')
          prod_obj = self.pool.get('mrp.production')
          bom_obj = self.pool.get('mrp.bom')
          move_obj = self.pool.get('stock.move')
          for wiz_qty in self.browse(cr, uid, ids, context=context):
              prod = prod_obj.browse(cr, uid, record_id, context=context)
              prod_obj.write(cr, uid, [prod.id], {'product_qty': wiz_qty.product_qty})
              prod_obj.action_compute(cr, uid, [prod.id])
  
              for move in prod.move_lines:
                  bom_point = prod.bom_id
                  bom_id = prod.bom_id.id
                  if not bom_point:
                      bom_id = bom_obj._bom_find(cr, uid, product_id=prod.product_id.id, context=context)
                      if not bom_id:
                          raise osv.except_osv(_('Error!'), _("Cannot find bill of material for this product."))
                      prod_obj.write(cr, uid, [prod.id], {'bom_id': bom_id})
                      bom_point = bom_obj.browse(cr, uid, [bom_id])[0]
  
                  if not bom_id:
                      raise osv.except_osv(_('Error!'), _("Cannot find bill of material for this product."))
  
                  factor = prod.product_qty * prod.product_uom.factor / bom_point.product_uom.factor
                  product_details, workcenter_details = \
                      bom_obj._bom_explode(cr, uid, bom_point, prod.product_id, factor / bom_point.product_qty, [], context=context)
                  for r in product_details:
                      if r['product_id'] == move.product_id.id:
                          move_obj.write(cr, uid, [move.id], {'product_uom_qty': r['product_qty']})
              if prod.move_prod_id:
                  move_obj.write(cr, uid, [prod.move_prod_id.id], {'product_uom_qty' :  wiz_qty.product_qty})
              self._update_product_to_produce(cr, uid, prod, wiz_qty.product_qty, context=context)
          return {}
  
  
  # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
  