##############################################################################
#
# Copyright (c) 2007-2008 Nexedi SA 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 Acquisition import Implicit
from AccessControl import ClassSecurityInfo
from Globals import InitializeClass
from DocumentationHelper import DocumentationHelper
from Products.ERP5Type import Permissions
from Products.CMFCore.utils import getToolByName
try:
  from libxml2 import parseDoc, parserError
  import_succeed = 1
except ImportError:
  from xml.dom.minidom import parseString
  from xml.xpath import Evaluate
  import_succeed = 0

class PortalTypePropertySheetDocumentationHelper(DocumentationHelper):
  """
    Provides documentation about a property sheet of a portal type
  """
  security = ClassSecurityInfo()
  security.declareObjectProtected(Permissions.AccessContentsInformation)

  def __init__(self, uri):
    self.uri = uri

  security.declareProtected(Permissions.AccessContentsInformation, 'getType' )
  def getType(self):
    """
    Returns the type of the documentation helper
    """
    return "Property Sheet"

  security.declareProtected(Permissions.AccessContentsInformation, 'getId' )
  def getId(self):
    """
    Returns the id of the documentation helper
    """
    name = getattr(self.getDocumentedObject(), "name", '')
    return name.split("/")[-1]

  security.declareProtected(Permissions.AccessContentsInformation, 'getTitle' )
  def getTitle(self):
    """
    Returns the title of the documentation helper
    """
    return getattr(self.getDocumentedObject(), "name", '')

  security.declareProtected( Permissions.AccessContentsInformation, 'getSourceCode' )
  def getSourceCode(self):
    """
    Returns the source code the property sheet
    """
    from zLOG import LOG, INFO
    source_code = ""
    property_sheet_file = self.getDocumentedObject()
    if property_sheet_file is not None:
      property_sheet_file.seek(0)
      source_code = property_sheet_file.read()
      portal_transforms = getToolByName(self, 'portal_transforms')
      REQUEST = getattr(self, 'REQUEST', None)
      if REQUEST is not None:
        view_mode = REQUEST.get('portal_skin', 'View' )
      if portal_transforms is None:
        LOG('DCWorkflowScriptDocumentationHelper', INFO,
            'Transformation Tool is not installed. No convertion of python script to html')
        return source_code
      else:
        if view_mode == 'View':
          src_mimetype = 'text/x-python'
          mime_type = 'text/html'
          source_html = portal_transforms.convertTo(mime_type, source_code, mimetype=src_mimetype)
          return source_html
        else:
          src_mimetype = 'text/x-python'
          mime_type = 'text/xml'
          source_xml = portal_transforms.convertToData(mime_type, source_code,
                                                       mimetype=src_mimetype,
                                                       context=self, object=self,
                                                       filename=self.title_or_id()
                                                       )
          xpath = '//*[name() = "office:text"]//*[name() = "text:p"]'
          if import_succeed:
            #libxml2
            # parse content.xml
            xml_doc = parseDoc(source_xml)
            # the name space text
            text_ns = xml_doc.getRootElement().searchNs(xml_doc, 'text')
            # all element text:p
            text_list = xml_doc.xpathEval(xpath)
            # all element wich have an text:style-name attribut
            parent_tag_list = xml_doc.xpathEval('//*[@*[name() = "text:style-name"]]')
            # Change the attribut text:style-name with a default value
            [parent_tag.setNsProp(text_ns, 'style-name', 'Preformatted_20_Text') \
                   for parent_tag in parent_tag_list]
            xml = ''.join([text.serialize('utf-8', 0) for text in text_list])
            xml_doc.freeDoc()
            return xml
          else:
            # minidom
            xml_doc = parseString(source_xml)
            tag_list = Evaluate (xpath , xml_doc)
            xml = ''.join(tag.toxml('utf-8') for tag in tag_list)
            return xml
    else:
      return source_code



InitializeClass(PortalTypePropertySheetDocumentationHelper)
