:mod:`dip.plugins.default_plugin_manager`
=========================================
.. module:: dip.plugins.default_plugin_manager

The :mod:`dip.plugins.plugin_manager` module contains dip's default
:term:`plugin manager` implementation.


:class:`PluginManager`
----------------------
.. class:: PluginManager

    Base class: :class:`~dip.model.Model`

    The PluginManager class is the default implementation of the
    :class:`~dip.plugins.IPluginManager` interface.

    .. method:: PluginManager.bind_extension_point(id, obj, name)

        Bind an extension point to an attribute of an object.  The
        attribute must have an ``append()`` method.
        
        :param id:
            is the identifier of the extension point.
        :param obj:
            is the object containing the attribute that the extension point is
            bound to.
        :param name:
            is the name of the attribute that the extension point is bound to.

    .. method:: PluginManager.bind_service(interface, obj, name)

        Bind the service for an interface to an attribute of an object.
        
        :param interface:
            is the interface.
        :param obj:
            is the object containing the attribute that the service is bound
            to.
        :param name:
            is the name of the attribute that the service is bound to.

    .. method:: PluginManager.choose_service(services)

        Choose a particular service from a list of possible services.
        
        :param services:
            a list of contributed services to choose from.
        :return:
            the chosen service or ``None`` if one wasn't chosen.

    .. method:: PluginManager.contribute(id, contribution)

        Contribute an object to an extension point.
        
        :param id:
            is the identifier of the extension point.
        :param contribution:
            is the contribution to make to the extension point.

    .. method:: PluginManager.service(interface)

        Get a service for a particular interface.
        
        :param interface:
            is the interface.
        :return:
            the service which will implement or be able to be adapted to the
            interface.  An exception is raised if there is no service
            available.