Form.py 48.3 KB
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# -*- coding: utf-8 -*-
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#############################################################################
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#
# Copyright (c) 2002 Nexedi SARL and Contributors. All Rights Reserved.
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#                    Jean-Paul Smets-Solanes <jp@nexedi.com>
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#
# 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.
#
##############################################################################

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from copy import deepcopy

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from Products.Formulator.Form import Form, BasicForm, ZMIForm
from Products.Formulator.Form import manage_addForm, manage_add, initializeForm
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from Products.Formulator.Errors import FormValidationError, ValidationError
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from Products.Formulator.DummyField import fields
from Products.Formulator.XMLToForm import XMLToForm
from Products.PageTemplates.ZopePageTemplate import ZopePageTemplate
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from Products.CMFCore.utils import _checkPermission, getToolByName
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from Products.CMFCore.exceptions import AccessControl_Unauthorized
from Products.ERP5Type import PropertySheet, Permissions
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from urllib import quote
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from Products.ERP5Type.Globals import InitializeClass, PersistentMapping, DTMLFile, get_request
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from AccessControl import Unauthorized, getSecurityManager, ClassSecurityInfo
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from ZODB.POSException import ConflictError
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from Acquisition import aq_base
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from Products.PageTemplates.Expressions import SecureModuleImporter
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from Products.ERP5Type.Utils import UpperCase

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from Products.ERP5Type.PsycoWrapper import psyco
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import sys
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import re
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_field_value_cache = {}
def purgeFieldValueCache():
  _field_value_cache.clear()

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# Patch the fiels methods to provide improved namespace handling

from Products.Formulator.Field import Field
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from Products.Formulator.MethodField import Method, BoundMethod
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from Products.Formulator.TALESField import TALESMethod
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from zLOG import LOG, PROBLEM
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def isCacheable(value):
  value = aq_base(value)
  if type(value) is BoundMethod:
    return False

  jar = getattr(value, '_p_jar', None)
  if jar is not None:
    return False

  dic = getattr(value, '__dict__', None)
  if dic is not None:
    for i in dic.values():
      jar = getattr(i, '_p_jar', None)
      if jar is not None:
        return False
  return True


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def copyMethod(value):
    if type(aq_base(value)) is Method:
      value = Method(value.method_name)
    elif type(aq_base(value)) is TALESMethod:
      value = TALESMethod(value._text)
    return value

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def getFieldDict(field, value_type):
    result = {}
    if field.meta_type=='ProxyField':
        if value_type=='values':
            get_method = getattr(field, 'get_recursive_orig_value')
        elif value_type=='tales':
            get_method = getattr(field, 'get_recursive_tales')
        else:
            raise ValueError, 'value_type must be values or tales'
        template_field = field.getRecursiveTemplateField()
        for ui_field_id in template_field.form.fields.keys():
            result[ui_field_id] = get_method(ui_field_id)
    else:
        if value_type=='values':
            get_method = getattr(field, 'get_orig_value')
        elif value_type=='tales':
            get_method = getattr(field, 'get_tales')
        else:
            raise ValueError, 'value_type must be values or tales'
        for ui_field_id in field.form.fields.keys():
            result[ui_field_id] = get_method(ui_field_id)
    return result

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class StaticValue:
  """
    Encapsulated a static value in a class
    (quite heavy, would be faster to store the
    value as is)
  """
  def __init__(self, value):
    self.value = value
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  def __call__(self, field, id, **kw):
    return self.returnValue(field, id, self.value)
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  def returnValue(self, field, id, value):
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    # if normal value is a callable itself, wrap it
    if callable(value):
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      value = value.__of__(field)
      #value=value() # Mising call ??? XXX Make sure compatible with listbox methods
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    if id == 'default':
      # We make sure we convert values to empty strings
      # for most fields (so that we do not get a 'value'
      # message on screen)
      # This can be overriden by using TALES in the field
      if value is None: value = ''

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    return value

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class TALESValue(StaticValue):
  def __init__(self, tales_expr):
    self.tales_expr = tales_expr

  def __call__(self, field, id, **kw):
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    REQUEST = kw.get('REQUEST', get_request())
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    if REQUEST is not None:
      # Proxyfield stores the "real" field in the request. Look if the
      # corresponding field exists in request, and use it as field in the
      # TALES context 
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      field = REQUEST.get(
        'field__proxyfield_%s_%s_%s' % (field.id, field._p_oid, id),
        field)
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    kw['field'] = field

    form = field.aq_parent # XXX (JPS) form for default is wrong apparently in listbox - double check
    obj = getattr(form, 'aq_parent', None)
    if obj is not None:
        container = obj.aq_inner.aq_parent
    else:
        container = None

    kw['form'] = form
    kw['request'] = REQUEST
    kw['here'] = obj
    kw['context'] = obj
    kw['modules'] = SecureModuleImporter
    kw['container'] = container
    try :
      kw['preferences'] = obj.getPortalObject().portal_preferences
    except AttributeError :
      LOG('ERP5Form', PROBLEM,
          'portal_preferences not put in TALES context (not installed?)')
    # This allows to pass some pointer to the local object
    # through the REQUEST parameter. Not very clean.
    # Used by ListBox to render different items in a list
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    if kw.get('cell') is None:
      request = kw.get('REQUEST')
      if request is not None:
        if getattr(request, 'cell', None) is not None:
          kw['cell'] = request.cell
        else:
          kw['cell'] = request
      elif getattr(REQUEST, 'cell', None) is not None:
          kw['cell'] = REQUEST.cell
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    # on Zope 2.12, only path expressions can access the CONTEXTS name
    # but ERP5 has many python expressions that try to access CONTEXTS, so
    # we try to keep backward compatibility
    if self.tales_expr._text.startswith("python:"):
      kw['CONTEXTS'] = kw
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    try:
      value = self.tales_expr.__of__(field)(**kw)
    except (ConflictError, RuntimeError):
      raise
    except:
      # We add this safety exception to make sure we always get
      # something reasonable rather than generate plenty of errors
      LOG('ERP5Form', PROBLEM,
          'Field.get_value ( %s/%s [%s]), exception on tales_expr: ' %
          ( form.getId(), field.getId(), id), error=sys.exc_info())
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      # field may be ProxyField
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      # here we avoid calling field.get_recursive_orig_value
      # on all fields because it can be acquired from another
      # field in context. ie, from a listbox field.
      # So, test condition on meta_type attribute to avoid
      # non desirable side effects.
      if field.meta_type == 'ProxyField':
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        value = field.get_recursive_orig_value(id)
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      else:
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        value = field.get_orig_value(id)
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    return self.returnValue(field, id, value)

class OverrideValue(StaticValue):
  def __init__(self, override):
    self.override = override

  def __call__(self, field, id, **kw):
    return self.returnValue(field, id, self.override.__of__(field)())

class DefaultValue(StaticValue):
  def __init__(self, field_id, value):
    self.key = field_id[3:]
    self.value = value

  def __call__(self, field, id, **kw):
    try:
      form = field.aq_parent
      ob = getattr(form, 'aq_parent', None)
      value = self.value
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      try:
        if value not in (None, ''):
          # If a default value is defined on the field, it has precedence
          value = ob.getProperty(self.key, d=value)
        else:
          # else we should give a chance to the accessor to provide
          # a default value (including None)
          value = ob.getProperty(self.key)
      except Unauthorized:
        value = ob.getProperty(self.key, d=value, checked_permission='View')
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        REQUEST = kw.get('REQUEST', get_request())
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        if REQUEST is not None:
          REQUEST.set('read_only_%s' % self.key, 1)
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    except (KeyError, AttributeError):
      value = None
    return self.returnValue(field, id, value)

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class DefaultCheckBoxValue(DefaultValue):
  def __call__(self, field, id, **kw):
    try:
      form = field.aq_parent
      ob = getattr(form, 'aq_parent', None)
      value = self.value
      try:
        value = ob.getProperty(self.key)
      except Unauthorized:
        value = ob.getProperty(self.key, d=value, checked_permission='View')
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        REQUEST = kw.get('REQUEST', get_request())
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        if REQUEST is not None:
          REQUEST.set('read_only_%s' % self.key, 1)
    except (KeyError, AttributeError):
      value = None
    return self.returnValue(field, id, value)

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class EditableValue(StaticValue):

  def __call__(self, field, id, **kw):
    # By default, pages are editable and
    # fields are editable if they are set to editable mode
    # However, if the REQUEST defines editable_mode to 0
    # then all fields become read only.
    # This is useful to render ERP5 content as in a web site (ECommerce)
    # editable_mode should be set for example by the page template
    # which defines the current layout
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    REQUEST = kw.get('REQUEST', get_request())
    if REQUEST is not None:
      if not REQUEST.get('editable_mode', 1):
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        return 0
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    return self.value

def getFieldValue(self, field, id, **kw):
  """
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    Return a callable expression and cacheable boolean flag
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  """
  tales_expr = self.tales.get(id, "")
  if tales_expr:
    # TALESMethod is persistent object, so that we cannot cache original one.
    # Becase if connection which original talesmethod uses is closed,
    # RuntimeError must occurs in __setstate__.
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    tales_expr = copyMethod(tales_expr)
    return TALESValue(tales_expr), isCacheable(tales_expr)
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  override = self.overrides.get(id, "")
  if override:
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    override = copyMethod(override)
    return OverrideValue(override), isCacheable(override)
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  # Get a normal value.
  value = self.get_orig_value(id)
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  value = copyMethod(value)
  cacheable = isCacheable(value)
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  field_id = field.id

  if id == 'default' and field_id.startswith('my_'):
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    if field.meta_type == 'ProxyField' and \
        field.getRecursiveTemplateField().meta_type == 'CheckBoxField' or \
        self.meta_type == 'CheckBoxField':
      return DefaultCheckBoxValue(field_id, value), cacheable
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    return DefaultValue(field_id, value), cacheable
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  # For the 'editable' value, we try to get a default value
  if id == 'editable':
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    return EditableValue(value), cacheable
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  # Return default value in callable mode
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  if callable(value):
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    return StaticValue(value), cacheable
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  # Return default value in non callable mode
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  return_value = StaticValue(value)(field, id, **kw)
  return return_value, isCacheable(return_value)
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def get_value(self, id, REQUEST=None, **kw):
  if REQUEST is None:
    REQUEST = get_request()
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  if REQUEST is not None:
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    field = REQUEST.get(
      'field__proxyfield_%s_%s_%s' % (self.id, self._p_oid, id),
      self)
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  else:
    field = self

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  cache_id = ('Form.get_value',
              self._p_oid,
              field._p_oid,
              id)
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  try:
    value = _field_value_cache[cache_id]
  except KeyError:
    # either returns non callable value (ex. "Title")
    # or a FieldValue instance of appropriate class
    value, cacheable = getFieldValue(self, field, id, **kw)
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    # Do not cache if the field is not stored in zodb,
    # because such field must be used for editing field in ZMI
    # and caching sometimes break these field settings at initialization.
    # As the result, we would see broken field editing screen in ZMI.
    if cacheable and self._p_oid:
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      _field_value_cache[cache_id] = value
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  if callable(value):
    return value(field, id, **kw)
  return value

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psyco.bind(get_value)

def om_icons(self):
    """Return a list of icon URLs to be displayed by an ObjectManager"""
    icons = ({'path': self.icon,
              'alt': self.meta_type, 'title': self.meta_type},)
    return icons


def _get_default(self, key, value, REQUEST):
    if value is not None:
        return value
    try:
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        value = self._get_user_input_value(key, REQUEST)
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    except (KeyError, AttributeError):
        # fall back on default
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        return self.get_value('default', REQUEST=REQUEST) # It was missing on Formulator
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    # if we enter a string value while the field expects unicode,
    # convert to unicode first
    # this solves a problem when re-rendering a sticky form with
    # values from request
    if (self.has_value('unicode') and self.get_value('unicode') and
        type(value) == type('')):
        return unicode(value, self.get_form_encoding())
    else:
        return value
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# Dynamic Patch
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Field.get_value = get_value
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Field._get_default = _get_default
Field.om_icons = om_icons
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# Constructors

manage_addForm = DTMLFile("dtml/form_add", globals())

def addERP5Form(self, id, title="", REQUEST=None):
    """Add form to folder.
    id     -- the id of the new form to add
    title  -- the title of the form to add
    Result -- empty string
    """
    # add actual object
    id = self._setObject(id, ERP5Form(id, title))
    # respond to the add_and_edit button if necessary
    add_and_edit(self, id, REQUEST)
    return ''

def add_and_edit(self, id, REQUEST):
    """Helper method to point to the object's management screen if
    'Add and Edit' button is pressed.
    id -- id of the object we just added
    """
    if REQUEST is None:
        return
    try:
        u = self.DestinationURL()
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    except AttributeError:
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        u = REQUEST['URL1']
    if REQUEST['submit'] == " Add and Edit ":
        u = "%s/%s" % (u, quote(id))
    REQUEST.RESPONSE.redirect(u+'/manage_main')

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def initializeForm(field_registry, form_class=None):
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    """Sets up ZMIForm with fields from field_registry.
    """
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    if form_class is None: form_class = ERP5Form
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    meta_types = []
    for meta_type, field in field_registry.get_field_classes().items():
        # don't set up in form if this is a field for internal use only
        if field.internal_field:
            continue

        # set up individual add dictionaries for meta_types
        dict = { 'name': field.meta_type,
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                 'permission': 'Add Formulator Fields',
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                 'action':
                 'manage_addProduct/Formulator/manage_add%sForm' % meta_type }
        meta_types.append(dict)
        # set up add method
        setattr(form_class,
                'manage_add%sForm' % meta_type,
                DTMLFile('dtml/fieldAdd', globals(), fieldname=meta_type))

    # set up meta_types that can be added to form
    form_class._meta_types = tuple(meta_types)

    # set up settings form
    form_class.settings_form._realize_fields()

# Special Settings

def create_settings_form():
    """Create settings form for ZMIForm.
    """
    form = BasicForm('manage_settings')

    title = fields.StringField('title',
                               title="Title",
                               required=0,
                               default="")
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    description = fields.TextAreaField('description',
                               title="Description",
                               required=0,
                               default="")
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    row_length = fields.IntegerField('row_length',
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                                     title='Number of groups in row (in order tab)',
                                     required=1,
                                     default=4)
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    name = fields.StringField('name',
                              title="Form name",
                              required=0,
                              default="")
    pt = fields.StringField('pt',
                              title="Page Template",
                              required=0,
                              default="")
    action = fields.StringField('action',
                                title='Form action',
                                required=0,
                                default="")
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    update_action = fields.StringField('update_action',
                                title='Form update action',
                                required=0,
                                default="")
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    update_action_title = fields.StringField('update_action_title',
                               title="Update Action Title",
                               required=0,
                               default="")
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    method = fields.ListField('method',
                              title='Form method',
                              items=[('POST', 'POST'),
                                     ('GET', 'GET')],
                              required=1,
                              size=1,
                              default='POST')
    enctype = fields.ListField('enctype',
                               title='Form enctype',
                               items=[('No enctype', ""),
                                      ('application/x-www-form-urlencoded',
                                       'application/x-www-form-urlencoded'),
                                      ('multipart/form-data',
                                       'multipart/form-data')],
                               required=0,
                               size=1,
                               default=None)
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    encoding = fields.StringField('encoding',
                                  title='Encoding of pages the form is in',
                                  default="UTF-8",
                                  required=1)
    stored_encoding = fields.StringField('stored_encoding',
                                      title='Encoding of form properties',
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                                      default='UTF-8',
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                                      required=1)
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    unicode_mode = fields.CheckBoxField('unicode_mode',
                                        title='Form properties are unicode',
                                        default=0,
                                        required=1)
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    edit_order = fields.LinesField('edit_order',
                                   title='Setters for these properties should be'
                                   '<br /> called by edit() in the defined order')
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    form.add_fields([title, description, row_length, name, pt, action, update_action, update_action_title,
                     method, enctype, encoding, stored_encoding, unicode_mode, edit_order])
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    return form

class ERP5Form(ZMIForm, ZopePageTemplate):
    """
        A Formulator form with a built-in rendering parameter based
        on page templates or DTML.
    """
    meta_type = "ERP5 Form"
    icon = "www/Form.png"

    # Declarative Security
    security = ClassSecurityInfo()

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    # Tabs in ZMI
    manage_options = (ZMIForm.manage_options[:5] +
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                      ({'label':'Proxify', 'action':'formProxify'},
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                       {'label':'UnProxify', 'action':'formUnProxify'},
                       {'label':'RelatedProxy', 
                         'action':'formShowRelatedProxyFields'}
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                      )+
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                      ZMIForm.manage_options[5:])

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    # Declarative properties
    property_sheets = ( PropertySheet.Base
                      , PropertySheet.SimpleItem)

    # Constructors
    constructors =   (manage_addForm, addERP5Form)

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    # This is a patched dtml formOrder
    security.declareProtected('View management screens', 'formOrder')
    formOrder = DTMLFile('dtml/formOrder', globals())

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    # Proxify form
    security.declareProtected('View management screens', 'formProxify')
    formProxify = DTMLFile('dtml/formProxify', globals())

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    # Proxify form
    security.declareProtected('View management screens', 'formUnProxify')
    formUnProxify = DTMLFile('dtml/formUnProxify', globals())

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    # Related Proxy Fields
    security.declareProtected('View management screens',
        'formShowRelatedProxyFields')
    formShowRelatedProxyFields = DTMLFile('dtml/formShowRelatedProxyFields', 
        globals())

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    # Default Attributes
    pt = 'form_view'
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    update_action = ''
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    update_action_title = ''
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    edit_order = []
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    # Special Settings
    settings_form = create_settings_form()

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    def __init__(self, id, title, unicode_mode=0, encoding='UTF-8',
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                 stored_encoding='UTF-8'):
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        """Initialize form.
        id    -- id of form
        title -- the title of the form
        """
        ZMIForm.inheritedAttribute('__init__')(self, "", "POST", "", id,
                                               encoding, stored_encoding,
                                               unicode_mode)
        self.id = id
        self.title = title
        self.row_length = 4
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        self.group_list = ["left", "right", "center", "bottom", "hidden"]
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        groups = {}
        for group in self.group_list:
          groups[group] = []
        self.groups = groups
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    # Proxy method to PageTemplate
    def __call__(self, *args, **kwargs):
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        # Security
        #
        # The minimal action consists in checking that
        # we have View permission on the current object
        # before rendering a form. Otherwise, object with
        # AccessContentInformation can be viewed by invoking
        # a form directly.
        #
        # What would be better is to prevent calling certain
        # forms to render objects. This can not be done
        # through actions since we are using sometimes forms
        # to render the results of a report dialog form.
        # An a appropriate solutions could consist in adding
        # a permission field to the form. Another solutions
        # is the use of REFERER in the rendering process.
        #
        # Both solutions are not perfect if the goal is, for
        # example, to prevent displaying private information of
        # staff. The only real solution is to use a special
        # permission (ex. AccessPrivateInformation) for those
        # properties which are sensitive.
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        kwargs.setdefault('args', args)
        key_prefix = kwargs.pop('key_prefix', None)
        obj = getattr(self, 'aq_parent', None)
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        if obj is not None:
          container = obj.aq_inner.aq_parent
          if not _checkPermission(Permissions.View, obj):
            raise AccessControl_Unauthorized('This document is not authorized for view.')
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        else:
          container = None
        pt = getattr(self,self.pt)
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        extra_context = dict( container=container,
                              template=self,
                              form=self,
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                              key_prefix=key_prefix,
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                              options=kwargs,
                              here=obj )
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        return pt.pt_render(extra_context=extra_context)

    def _exec(self, bound_names, args, kw):
        pt = getattr(self,self.pt)
        return pt._exec(self, bound_names, args, kw)

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    def manage_renameObject(self, id, new_id, REQUEST=None):
      # overriden to keep the order of a field after rename
      groups = deepcopy(self.groups)
      ret = ZMIForm.manage_renameObject(self, id, new_id, REQUEST=REQUEST)
      for group_id, field_id_list in groups.items():
        if id in field_id_list:
          index = field_id_list.index(id)
          field_id_list.pop(index)
          field_id_list.insert(index, new_id)
          groups[group_id] = field_id_list
      self.groups = groups
      return ret

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    # Utilities
    def ErrorFields(self, validation_errors):
        """
            Create a dictionnary of validation_errors
            with field id as key
        """
        ef = {}
        for e in validation_errors.errors:
            ef[e.field_id] = e
        return ef

    def om_icons(self):
        """Return a list of icon URLs to be displayed by an ObjectManager"""
        icons = ({'path': 'misc_/ERP5Form/Form.png',
                  'alt': self.meta_type, 'title': self.meta_type},)
        return icons

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    # Pached validate_all to support ListBox validation
    security.declareProtected('View', 'validate_all')
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    def validate_all(self, REQUEST, key_prefix=None):
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        """Validate all enabled fields in this form, catch any ValidationErrors
        if they occur and raise a FormValidationError in the end if any
        Validation Errors occured.
        """
        result = {}
        errors = []
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        for group in self.get_groups():
            if group.lower() == 'hidden':
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                continue
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            for field in self.get_fields_in_group(group):
                # skip any field we don't need to validate
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                if not field.need_validate(REQUEST, key_prefix=key_prefix):
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                    continue
                if not (field.get_value('editable',REQUEST=REQUEST)):
                    continue
                try:
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                    value = field.validate(REQUEST, key_prefix=key_prefix)
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                    # store under id
                    result[field.id] = value
                    # store as alternate name as well if necessary
                    alternate_name = field.get_value('alternate_name')
                    if alternate_name:
                        result[alternate_name] = value
                except FormValidationError, e: # XXX JPS Patch for listbox
                    #LOG('validate_all', 0, 'FormValidationError: field = %s, errors=%s' % (repr(field), repr(errors)))
                    errors.extend(e.errors)
                    result.update(e.result)
                except ValidationError, err:
                    #LOG('validate_all', 0, 'ValidationError: field.id = %s, err=%s' % (repr(field.id), repr(err)))
                    errors.append(err)
                except KeyError, err:
                    LOG('ERP5Form/Form.py:validate_all', 0, 'KeyError : %s' % (err, ))
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        if len(errors) > 0:
            raise FormValidationError(errors, result)
        return result

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    # FTP/DAV Access
    manage_FTPget = ZMIForm.get_xml

    def PUT(self, REQUEST, RESPONSE):
        """Handle HTTP PUT requests."""
        self.dav__init(REQUEST, RESPONSE)
        self.dav__simpleifhandler(REQUEST, RESPONSE, refresh=1)
        body=REQUEST.get('BODY', '')
        # Empty the form (XMLToForm is unable to empty things before reopening)
        for k in self.get_field_ids():
          try:
            self._delObject(k)
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          except AttributeError:
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            pass
        self.groups = {}
        self.group_list = []
        # And reimport
        XMLToForm(body, self)
        self.ZCacheable_invalidate()
        RESPONSE.setStatus(204)
        return RESPONSE

    manage_FTPput = PUT

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    def getSimilarSkinFolderIdList(self):
      """
      Find other skins id installed in the same time
      """
      folder_id = self.aq_parent.id
      # Find a business template which manages the context skin folder.
      folder_id_list = []
      for template in self.portal_templates.getInstalledBusinessTemplateList():
        template_skin_id_list = template.getTemplateSkinIdList()
        if folder_id in template_skin_id_list:
          folder_id_list.extend(template_skin_id_list)
          break
      return folder_id_list

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    #Methods for Proxify tab.
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    security.declareProtected('View management screens', 'getFormFieldList')
    def getFormFieldList(self):
        """
        find fields and forms which name ends with 'FieldLibrary' in
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        the same business template or in erp5_core.
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        """
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        form_list = []
        def iterate(obj):
            for i in obj.objectValues():
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                if (i.meta_type=='ERP5 Form' and
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                    i.id.startswith('Base_view') and
                    i.id.endswith('FieldLibrary') and 
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                    '_view' in i.getId()):
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                    form_id = i.getId()
                    form_path = '%s.%s' % (obj.getId(), form_id)
                    field_list = []
                    form_list.append({'form_path':form_path,
                                      'form_id':form_id,
                                      'field_list':field_list})
                    for field in i.objectValues():
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                        field_type, proxy_flag = get_field_meta_type_and_proxy_flag(field)
                        if proxy_flag:
                            field_type = '%s(Proxy)' % field_type
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                        field_list.append({'field_object':field,
                                           'field_type':field_type,
                                           'proxy_flag':proxy_flag})
                if i.meta_type=='Folder':
                    iterate(i)
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        skins_tool = self.portal_skins
        folder_id = self.aq_parent.id
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        for skin_folder_id in self.getSimilarSkinFolderIdList():
          iterate(getattr(skins_tool, skin_folder_id))
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        iterate(skins_tool.erp5_core)
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        return form_list

    security.declareProtected('View management screens', 'getProxyableFieldList')
    def getProxyableFieldList(self, field, form_field_list=None):
        """"""
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        def extract_keyword(name):
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            keyword_list = [i for i in name.split('_') if not i in \
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                    ('my', 'default', 'listbox', 'your')]
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            if len(keyword_list) == 0:
              # This means that the name is one of the exception keywords,
              # so we have to keep it
              keyword_list = [name]
            return keyword_list
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        def check_keyword_list(name, keyword_list):
            count = 0
            for i in keyword_list:
                if i in name:
                    count += 1
            return count/float(len(keyword_list))

        def match(field_data):
            if not field_data['field_type'].startswith(field.meta_type):
                return 0
            field_object = field_data['field_object']
            if field_object.aq_base is field.aq_base:
                return 0
            field_id = field_object.getId()
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            # All proxy fields in field libraries should define their
            # technical context
            # XXX Theses 3 following lines will need to be uncommented
            # as soon as proxy guideline is fully validated on erp5_trade
            #if field.meta_type == 'ProxyField' and \
            #    re.match('my_.*_mode', field_id) is None:
            #  return 0
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            # XXX keyword match is not useful anymore.Need different approach.
            keyword_match_rate = check_keyword_list(field_id, extract_keyword(id_))
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            if keyword_match_rate>0.3:
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                return keyword_match_rate
            else:
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                def split(string):
                    result = []
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                    temporary = []
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                    for char in string:
                        if char.isupper():
                            if temporary:
                                result.append(''.join(temporary))
                            temporary = []
                        temporary.append(char)
                    result.append(''.join(temporary))
                    return result

                if ''.join(field_id.split('_')[1:]).startswith(
                    split(field.meta_type)[0].lower()):
                    # At least it seems a generic template field of the meta_type.
                    return 0.1
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        def make_dict_list_append_function(dic, order_list):
            def append(key, item):
                if not key in order_list:
                    order_list.append(key)
                    dic[key] = []
                dic[key].append(item)
            return append

        def add_default_field_library():
            portal_url = getToolByName(self, 'portal_url')
            portal = portal_url.getPortalObject()
            portal_skins = getToolByName(self, 'portal_skins')

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            default_field_library_path = portal.getProperty(
                                  'erp5_default_field_library_path',
                                  'erp5_core.Base_viewFieldLibrary')
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            if (not default_field_library_path or
                len(default_field_library_path.split('.'))!=2):
                return

            skinfolder_id, form_id = default_field_library_path.split('.')

            skinfolder = getattr(portal_skins, skinfolder_id, None)
            default_field_library = getattr(skinfolder, form_id, None)
            if default_field_library is None:
                return
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            for i in default_field_library.objectValues():
                field_meta_type, proxy_flag = get_field_meta_type_and_proxy_flag(i)
                if meta_type==field_meta_type:
                    if proxy_flag:
                        field_meta_type = '%s(Proxy)' % field_meta_type
                    matched_item = {'form_id':form_id,
                                    'field_type':field_meta_type,
                                    'field_object':i,
                                    'proxy_flag':proxy_flag,
                                    'matched_rate':0
                                    }
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                    if not i in [item['field_object']
                                 for item in matched.get(default_field_library_path, ())]:
                      matched_append(default_field_library_path, matched_item)
                    if not i in [item['field_object']
                                 for item in perfect_matched.get(default_field_library_path, ())]:
                      perfect_matched_append(default_field_library_path, matched_item)
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        id_ = field.getId()
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        meta_type = field.meta_type
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        matched = {}
        form_order = []
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        matched_append = make_dict_list_append_function(matched, form_order)

        perfect_matched = {}
        perfect_matched_form_order = []
        perfect_matched_append = make_dict_list_append_function(perfect_matched, perfect_matched_form_order)
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        if form_field_list is None:
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            form_field_list = self.getFormFieldList()
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        for i in form_field_list:
            for data in i['field_list']:
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                tmp = []
                matched_rate = match(data)
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                if matched_rate>0:
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                    form_path = i['form_path']
                    form_id = i['form_id']
                    field_type = data['field_type']
                    field_object = data['field_object']
                    proxy_flag = data['proxy_flag']
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                    matched_item = {'form_id':form_id,
                                    'field_type':field_type,
                                    'field_object':field_object,
                                    'proxy_flag':proxy_flag,
                                    'matched_rate':matched_rate
                                    }
                    if matched_rate==1:
                        perfect_matched_append(form_path, matched_item)
                    elif not perfect_matched:
                        matched_append(form_path, matched_item)

        if perfect_matched:
            perfect_matched_form_order.sort()
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            add_default_field_library()
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            return perfect_matched_form_order, perfect_matched

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        form_order.sort()
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        add_default_field_library()
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        return form_order, matched

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    security.declareProtected('View management screens', 'getUnProxyableFieldList')
    def getUnProxyableFieldList(self):
      """
      Return ProxyFields
      """
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      return sorted([f for f in self.objectValues() \
          if f.meta_type == 'ProxyField'], key = lambda x: x.id)
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    security.declareProtected('View management screens',
        'getRelatedProxyFieldDictList')
    def getRelatedProxyFieldDictList(self, **kw):
      """
      Retrieve all proxy using proxy in this form
      """
      form_id = self.id
      proxy_dict = {}
      for document in self.objectValues():
        if document.meta_type == 'ProxyField':
          short_path = "%s.%s" % (form_id, document.id)
          proxy_dict[short_path] = {'proxy': document,
                                    'short_path': short_path,
                                    'related_proxy_list': []}
      def iterate(document):
        for i in document.objectValues():
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          if i.meta_type == 'ERP5 Form':
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            for field in i.objectValues():
              if field.meta_type == 'ProxyField':
                key = "%s.%s" % (field.get_value('form_id'),
                                 field.get_value('field_id'))
                if proxy_dict.has_key(key):
                  proxy_dict[key]['related_proxy_list'].append(
                      {'short_path': "%s.%s" % \
                      (field.aq_parent.id, field.id),
                       'proxy': field})
          if i.meta_type == 'Folder':
            iterate(i)

      skins_tool = self.portal_skins
      proxy_dict_list = []
      if len(proxy_dict):
        for skin_folder_id in self.getSimilarSkinFolderIdList():
          iterate(getattr(skins_tool, skin_folder_id))
        proxy_dict_list = proxy_dict.values()
        proxy_dict_list.sort(key=lambda x: x['short_path'])
        for item in proxy_dict_list:
          item['related_proxy_list'].sort(key=lambda x: x['short_path'])

      return proxy_dict_list

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    security.declareProtected('Change Formulator Forms', 'proxifyField')
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    def proxifyField(self, field_dict=None, force_delegate=False,
                     keep_empty_value=False, REQUEST=None):
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        """Convert fields to proxy fields
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        If the field value is not empty and different from the proxyfield
        value, the value is kept on the proxyfield, otherwise it is delegated.
        If you specify force_delegate, values will be delegated even if they
        are different. And if you specify keep_empty_value, then empty values
        will not be delegated(force_delegate option is high priority).
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        """
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        from Products.ERP5Form.ProxyField import ProxyWidget

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        def copy(field, value_type):
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            new_dict = {}
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            for key, value in getFieldDict(field, value_type).iteritems():
                if (keep_empty_value is False and
                    (value=='' or
                     value==0 or
                     (isinstance(value, (tuple, list)) and len(value)==0)
                     )
                    ):
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                    continue
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                if isinstance(aq_base(value), (Method, TALESMethod)):
                    value = copyMethod(value)
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                elif value is not None and not isinstance(value,
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                        (str, unicode, int, long, float, bool, list, tuple, dict)):
                    raise ValueError, '%s:%s' % (type(value), repr(value))
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                new_dict[key] = value
            return new_dict

        def is_equal(a, b):
            type_a = type(a)
            type_b = type(b)
            if type_a is not type_b:
                return False
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            elif type_a is Method:
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                return a.method_name==b.method_name
            elif type_a is TALESMethod:
                return a._text==b._text
            else:
                return a==b

        def remove_same_value(new_dict, target_dict):
            for key, value in new_dict.items():
                target_value = target_dict.get(key)
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                if force_delegate or is_equal(value, target_value):
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                    del new_dict[key]
            return new_dict

        def get_group_and_position(field_id):
            for i in self.groups.keys():
                if field_id in self.groups[i]:
                    return i, self.groups[i].index(field_id)

        def set_group_and_position(group, position, field_id):
            self.field_removed(field_id)
            self.groups[group].insert(position, field_id)
            # Notify changes explicitly.
            self.groups = self.groups

        if field_dict is None:
            return

        for field_id in field_dict.keys():
            target = field_dict[field_id]
            target_form_id, target_field_id = target.split('.')

            # keep current group and position.
            group, position = get_group_and_position(field_id)

            # create proxy field
            old_field = getattr(self, field_id)
            self.manage_delObjects(field_id)
            self.manage_addField(id=field_id, title='', fieldname='ProxyField')
            proxy_field = getattr(self, field_id)
            proxy_field.values['form_id'] = target_form_id
            proxy_field.values['field_id'] = target_field_id

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            target_field = proxy_field.getTemplateField()
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            if target_field is None:
              raise ValueError("Unable to find template : %s.%s" % (
                               target_form_id, target_field_id))
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            # copy data
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            new_values = remove_same_value(copy(old_field, 'values'),
                                           getFieldDict(target_field, 'values'))
            new_tales = remove_same_value(copy(old_field, 'tales'),
                                          getFieldDict(target_field, 'tales'))
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            if target_field.meta_type=='ProxyField':
                for i in new_values.keys():
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                    if not i in target_field.delegated_list:
                        # obsolete variable check
                        try:
                            target_field.get_recursive_orig_value(i)
                        except KeyError:
                            # then `i` is obsolete!
                            del new_values[i]
                        else:
                            if is_equal(target_field.get_recursive_orig_value(i),
                                        new_values[i]):
                                del new_values[i]
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                for i in new_tales.keys():
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                    if not i in target_field.delegated_list:
                        # obsolete variable check
                        try:
                            target_field.get_recursive_tales(i)
                        except KeyError:
                            # then `i` is obsolete!
                            del new_tales[i]
                        else:
                            if is_equal(target_field.get_recursive_tales(i),
                                        new_tales[i]):
                                del new_tales[i]
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            delegated_list = []
            for i in (new_values.keys()+new_tales.keys()):
                if not i in delegated_list:
                    delegated_list.append(i)
            proxy_field.values.update(new_values)
            proxy_field.tales.update(new_tales)
            proxy_field.delegated_list = delegated_list

            # move back to the original group and position.
            set_group_and_position(group, position, field_id)

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        if REQUEST is not None:
            return self.formProxify(manage_tabs_message='Changed')
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    psyco.bind(__call__)
    psyco.bind(_exec)

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    security.declareProtected('Change Formulator Forms', 'unProxifyField')
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    def unProxifyField(self, field_dict=None, copy_delegated_values=False,
                       REQUEST=None):
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        """
        Convert proxy fields to fields
        """
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        def copy(field, value_type):
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            new_dict = {}
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            for key, value in getFieldDict(field, value_type).iteritems():
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                if isinstance(aq_base(value), (Method, TALESMethod)):
                    value = copyMethod(value)
                elif value is not None and not isinstance(value,
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                        (str, unicode, int, long, float, bool, list, tuple, dict)):
                    raise ValueError, '%s:%s' % (type(value), repr(value))
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                new_dict[key] = value
            return new_dict

        def is_equal(a, b):
            type_a = type(a)
            type_b = type(b)
            if type_a is not type_b:
                return False
            elif type_a is Method:
                return a.method_name==b.method_name
            elif type_a is TALESMethod:
                return a._text==b._text
            else:
                return a==b

        def remove_same_value(new_dict, target_dict):
            for key, value in new_dict.items():
                target_value = target_dict.get(key)
                if is_equal(value, target_value):
                    del new_dict[key]
            return new_dict

        def get_group_and_position(field_id):
            for i in self.groups.keys():
                if field_id in self.groups[i]:
                    return i, self.groups[i].index(field_id)

        def set_group_and_position(group, position, field_id):
            self.field_removed(field_id)
            self.groups[group].insert(position, field_id)
            # Notify changes explicitly.
            self.groups = self.groups

        if field_dict is None:
            return

        for field_id in field_dict.keys():
            # keep current group and position.
            group, position = get_group_and_position(field_id)

            # create field
            old_proxy_field = getattr(self, field_id)
            delegated_field = old_proxy_field.getRecursiveTemplateField()
            if delegated_field is None:
              break
            self.manage_delObjects(field_id)
            self.manage_addField(id=field_id,
                                 title='',
                                 fieldname=delegated_field.meta_type)
            field = getattr(self, field_id)
            # copy data
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            new_values = remove_same_value(copy(old_proxy_field, 'values'),
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                                           field.values)
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Nicolas Delaby committed
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            new_tales = remove_same_value(copy(old_proxy_field, 'tales'),
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                                          field.tales)

            field.values.update(new_values)
            field.tales.update(new_tales)

            # move back to the original group and position.
            set_group_and_position(group, position, field_id)

        if REQUEST is not None:
            return self.formUnProxify(manage_tabs_message='Changed')

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    # Overload of the Form method
    #   Use the include_disabled parameter since
    #   we should consider all fields to render the group tab
    #   moreoever, listbox rendering fails whenever enabled
    #   is based on the cell parameter.
    security.declareProtected('View', 'get_largest_group_length')
    def get_largest_group_length(self):
        """Get the largest group length available; necessary for
        'order' screen user interface.
        XXX - Copyright issue
        """
        max = 0
        for group in self.get_groups(include_empty=1):
            fields = self.get_fields_in_group(group, include_disabled=1)
            if len(fields) > max:
                max = len(fields)
        return max

    security.declareProtected('View', 'get_groups')
    def get_groups(self, include_empty=0):
        """Get a list of all groups, in display order.

        If include_empty is false, suppress groups that do not have
        enabled fields.
        XXX - Copyright issue
        """
        if include_empty:
            return self.group_list
        return [group for group in self.group_list
                if self.get_fields_in_group(group, include_disabled=1)]

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    # Find support in ZMI. This is useful for development.
    def PrincipiaSearchSource(self):
      return str((self.pt, self.name, self.action, self.update_action,
                  self.encoding, self.stored_encoding, self.enctype))
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# utility function
def get_field_meta_type_and_proxy_flag(field):
    if field.meta_type=='ProxyField':
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        try:
            return field.getRecursiveTemplateField().meta_type, True
        except AttributeError:
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            raise AttributeError, 'The proxy target of %s.%s field does not '\
                  'exists. Please check the field setting.' % \
                  (field.aq_parent.id, field.getId())
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    else:
        return field.meta_type, False


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Jean-Paul Smets committed
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# More optimizations
#psyco.bind(ERP5Field)
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# XXX Not useful, as we patch those methods in FormulatorPatch
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Jean-Paul Smets committed
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psyco.bind(Field.render)
psyco.bind(Field._render_helper)
psyco.bind(Field.get_value)

#from Products.PageTemplates.PageTemplate import PageTemplate
#from TAL import TALInterpreter
#psyco.bind(TALInterpreter.TALInterpreter)
#psyco.bind(TALInterpreter.TALInterpreter.interpret)
#psyco.bind(PageTemplate.pt_render)
#psyco.bind(PageTemplate.pt_macros)

#from Products.CMFCore.ActionsTool import ActionsTool
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#psyco.bind(ActionsTool.listFilteredActionsFor)
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