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#
# Copyright (c) 2001, 2002 Zope Corporation 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.
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"""Basic File interfaces.

$Id: interfaces.py 73772 2007-03-27 15:09:19Z dobe $
"""
__docformat__ = 'restructuredtext'

from zope.schema import BytesLine, Bytes
from zope.interface import Interface
from zope.app.file.i18n import ZopeMessageFactory as _


class IFile(Interface):

    contentType = BytesLine(
        title = _(u'Content Type'),
        description=_(u'The content type identifies the type of data.'),
        default='',
        required=False,
        missing_value=''
        )

    data = Bytes(
        title=_(u'Data'),
        description=_(u'The actual content of the object.'),
        default='',
        missing_value='',
        required=False,
        )

    def getSize():
        """Return the byte-size of the data of the object."""

class IImage(IFile):
    """This interface defines an Image that can be displayed.
    """

    def getImageSize():
        """Return a tuple (x, y) that describes the dimensions of
        the object.
        """