root/cpsskins/branches/paris-sprint-2006/elements/presentation.py

##############################################################################
#
# Copyright (c) 2005-2006 Nuxeo and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""

$Id$
"""
__docformat__ = "reStructuredText"

from zope.traversing.interfaces import IPathAdapter
from zope.interface import implements
from zope.component import queryUtility

from cpsskins.elements.interfaces import IFormattable
from cpsskins.elements.interfaces import  IPresentable
from cpsskins.setup.interfaces import IType

class Presentable(object):
    """This adapter makes elements presentable, i.e. formattable
    according to the factory presets.

    """
    implements(IPresentable, IPathAdapter)

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

    def this(self):
        """Return the adapted object.
        """
        return self

    def addPresentation(self, perspective=None):
        context = self.context
        formattable = IFormattable(context)

        factory_info = queryUtility(IType(context).getContentType(),
                                    name=u'presentation')

        if factory_info is None:
            factory_info = queryUtility(IType(context).getElementType(),
                                        name=u'presentation')

        for name, types in factory_info.formats.items():
            formattable.addFormat(name=name, types=types)

    def removePresentation(self, perspective=None):
        """Remove a presentation associated to an element.
        """
        context = self.context
        formattable = IFormattable(context)
        formattable.removeFormats()

    def customizeFormat(self, name=u'', perspective=None):
        raise NotImplementedError

    def decustomizeFormat(self, name=u'', perspective=None):
        raise NotImplementedError