##############################################################################
#
# Copyright (c) 2002-2003 Nexedi SARL and Contributors. All Rights Reserved.
#                    Jean-Paul Smets-Solanes <jp@nexedi.com>
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# This program is Free Software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
##############################################################################

from Base import func_code, type_definition, list_types, ATTRIBUTE_PREFIX, Getter as BaseGetter
from Products.ERP5Type.PsycoWrapper import psyco

class DefaultGetter(BaseGetter):
    """
      Gets the default reference of a relation
    """
    _need__name__=1

    # Generic Definition of Method Object
    # This is required to call the method form the Web
    func_code = func_code()
    func_code.co_varnames = ('self',)
    func_code.co_argcount = 1
    func_defaults = ()

    def __init__(self,  id, key, property_type, default,
                        acquisition_base_category,
                        acquisition_portal_type,
                        acquisition_accessor_id,
                        acquisition_copy_value,
                        acquisition_mask_value,
                        storage_id=None,
                        alt_accessor_id = None,
                        acquisition_object_id=None,
                        is_list_type = 0,
                        is_tales_type = 0
                  ):
      self._id = id
      self.__name__ = id
      self._key = key
      self._property_type = property_type
      self._null = type_definition[property_type]['null']
      self._default = default

      # These values are hashed by _get*AcquiredProperty: to be
      # hashable, they need to be converted to tuples
      if isinstance(acquisition_base_category, list):
        acquisition_base_category = tuple(acquisition_base_category)
      if isinstance(acquisition_object_id, list):
        acquisition_object_id = tuple(acquisition_object_id)
      if isinstance(acquisition_portal_type, list):
        acquisition_portal_type = tuple(acquisition_portal_type)
      if isinstance(alt_accessor_id, list):
        alt_accessor_id = tuple(alt_accessor_id)

      self._acquisition_base_category = acquisition_base_category
      self._acquisition_portal_type = acquisition_portal_type
      self._acquisition_accessor_id = acquisition_accessor_id
      self._acquisition_copy_value = acquisition_copy_value
      self._acquisition_mask_value = acquisition_mask_value
      if storage_id is None:
        storage_id = "%s%s" % (ATTRIBUTE_PREFIX, key)
      self._storage_id = storage_id
      self._alt_accessor_id = alt_accessor_id
      self._acquisition_object_id = acquisition_object_id
      self._is_list_type = is_list_type
      self._is_tales_type = is_tales_type

    def __call__(self, instance, *args, **kw):
      if len(args) > 0:
        default = args[0]
      else:
        default = self._default
      # If this is a TALES expression and the option 'evaluate' is false,
      # deal with the value as a simple object.
      if self._is_tales_type and not kw.get('evaluate', 1):
        is_list_type = 0
        is_tales_type = 0
      else:
        is_list_type = self._is_list_type
        is_tales_type = self._is_tales_type
      return instance._getDefaultAcquiredProperty(self._key, default, self._null,
            base_category=self._acquisition_base_category,
            portal_type=self._acquisition_portal_type,
            accessor_id=self._acquisition_accessor_id,
            copy_value=self._acquisition_copy_value,
            mask_value=self._acquisition_mask_value,
            storage_id=self._storage_id,
            alt_accessor_id=self._alt_accessor_id,
            acquisition_object_id=self._acquisition_object_id,
            is_list_type=is_list_type,
            is_tales_type=is_tales_type,
            checked_permission=kw.get('checked_permission', None),
            )

    psyco.bind(__call__)

Getter = DefaultGetter

class ListGetter(BaseGetter):
    """
      Gets an attribute value
    """
    _need__name__=1

    # Generic Definition of Method Object
    # This is required to call the method form the Web
    func_code = func_code()
    func_code.co_varnames = ('self',)
    func_code.co_argcount = 1
    func_defaults = ()

    def __init__(self,  id, key, property_type, default,
                        acquisition_base_category,
                        acquisition_portal_type,
                        acquisition_accessor_id,
                        acquisition_copy_value,
                        acquisition_mask_value,
                        storage_id=None,
                        alt_accessor_id = None,
                        acquisition_object_id=None,
                        is_list_type = 0,
                        is_tales_type = 0
                  ):
      self._id = id
      self.__name__ = id
      self._key = key
      self._property_type = property_type
      self._null = type_definition[property_type]['null']
      self._default = default

      # These values are hashed by _get*AcquiredProperty: to be
      # hashable, they need to be converted to tuples
      if isinstance(acquisition_base_category, list):
        acquisition_base_category = tuple(acquisition_base_category)
      if isinstance(acquisition_object_id, list):
        acquisition_object_id = tuple(acquisition_object_id)
      if isinstance(acquisition_portal_type, list):
        acquisition_portal_type = tuple(acquisition_portal_type)
      if isinstance(alt_accessor_id, list):
        alt_accessor_id = tuple(alt_accessor_id)

      self._acquisition_base_category = acquisition_base_category
      self._acquisition_portal_type = acquisition_portal_type
      self._acquisition_accessor_id = acquisition_accessor_id
      self._acquisition_copy_value = acquisition_copy_value
      self._acquisition_mask_value = acquisition_mask_value
      if storage_id is None:
        storage_id = "%s%s" % (ATTRIBUTE_PREFIX, key)
      self._storage_id = storage_id
      self._alt_accessor_id = alt_accessor_id
      self._acquisition_object_id = acquisition_object_id
      self._is_list_type = is_list_type
      self._is_tales_type = is_tales_type

    def __call__(self, instance, *args, **kw):
      if len(args) > 0:
        default = args[0]
      else:
        default = self._default
      # If this is a TALES expression and the option 'evaluate' is false,
      # deal with the value as a simple object.
      if self._is_tales_type and not kw.get('evaluate', 1):
        is_list_type = 0
        is_tales_type = 0
      else:
        is_list_type = self._is_list_type
        is_tales_type = self._is_tales_type

      return instance._getAcquiredPropertyList(self._key, default, self._null,
            base_category=self._acquisition_base_category,
            portal_type=self._acquisition_portal_type,
            accessor_id=self._acquisition_accessor_id,
            copy_value=self._acquisition_copy_value,
            mask_value=self._acquisition_mask_value,
            storage_id=self._storage_id,
            alt_accessor_id=self._alt_accessor_id,
            acquisition_object_id=self._acquisition_object_id,
            is_list_type=is_list_type,
            is_tales_type=is_tales_type,
            checked_permission=kw.get('checked_permission', None),
            )

    psyco.bind(__call__)

class SetGetter(ListGetter):
    """
    Gets a category value set
    """
    def __call__(self, instance, *args, **kw):
      return list(set(ListGetter.__call__(self, instance, *args, **kw)))
