Source code for pyface.viewer.content_provider

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""" Abstract base class for content providers. """


from traits.api import HasTraits


class ContentProvider(HasTraits):
    """ Abstract base class for content providers. """

    # ------------------------------------------------------------------------
    # 'ContentProvider' interface.
    # ------------------------------------------------------------------------

    def get_elements(self, element):
        """ Returns a list of the elements to display in a viewer.

        Returns a list of elements to display in a viewer when its (ie. the
        viewer's) input is set to the given element.

        The returned list should not be modified by the viewer.

        """

        raise NotImplementedError()