Source code for apptools.naming.state_factory

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# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
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# Thanks for using Enthought open source!
""" The base class for all state factories. """


# Enthought library imports.
from traits.api import HasPrivateTraits


class StateFactory(HasPrivateTraits):
    """The base class for all state factories.

    A state factory accepts an object and returns some data representing the
    object that is suitable for storing in a particular context.

    """

    ###########################################################################
    # 'StateFactory' interface.
    ###########################################################################

    def get_state_to_bind(self, obj, name, context):
        """Returns the state of an object for binding.

        Returns None if the factory cannot create the state (ie. it does not
        recognise the object passed to it).

        """

        raise NotImplementedError