## $Id: interfaces.py 12200 2014-12-12 15:34:50Z henrik $
##
## Copyright (C) 2014 Uli Fouquet & Henrik Bettermann
## 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 zope.interface import Attribute, Interface
from zope import schema
from waeup.ikoba.interfaces import (
    IIkobaObject,
    ContextualDictSourceFactoryBase)
from waeup.ikoba.interfaces import MessageFactory as _


class IDocumentsContainer(IIkobaObject):
    """A container for all kind of document objects.

    """

    def addDocument(document):
        """Add a document.
        """


class IDocument(IIkobaObject):
    """A base representation of documents.

    """
    document_id = Attribute('Document Identifier')
    history = Attribute('Object history, a list of messages')
    state = Attribute('Returns the verification state of a document')
    translated_state = Attribute(
        'Returns a translated, more verbose verification state of a document')
    class_name = Attribute('Name of the document class')
    formatted_transition_date = Attribute('Last transition formatted date string')
    user_id = Attribute('Id of a user')
    connected_files = Attribute('Names of files connected to a document')
    is_verifiable = Attribute('Contract verifiable by officer')

    title = schema.TextLine(
        title = _(u'Document Title'),
        required = True,
        )

    last_transition_date = schema.Datetime(
        title = _(u'Last Transition Date'),
        required = False,
        readonly = False,
        )

    def setMD5():
        """Determine md5 checksum of selected files and store checksums as
        document attributes.
        """

class IPDFDocument(IDocument):
    """A base representation of PDF documents.

    """


class IHTMLDocument(IDocument):
    """A base representation of HTML documents.

    """


class IDocumentsUtils(Interface):
    """A collection of methods which are subject to customization.

    """