24     """Interface based context selector

    24     """Interface based context selector

    25 

    25 

    26     This selector can be used as a subscriber predicate to define

    26     This selector can be used as a subscriber predicate to define

    27     an interface that the context must support for the event to be applied::

    27     an interface that the context must support for the event to be applied::

    28 

    28 

    29         from pyams_utils.interfaces.site import ISiteRoot

    31         from pyams_utils.interfaces.site import ISiteRoot

    30 

    32 

    31         @subscriber(IObjectModifiedEvent, context_selector=ISiteRoot)

    33         @subscriber(IObjectModifiedEvent, context_selector=ISiteRoot)

    32         def siteroot_modified_event_handler(event):

    34         def siteroot_modified_event_handler(event):

    33             '''This is an event handler for an ISiteRoot object modification event'''

    35             '''This is an event handler for an ISiteRoot object modification event'''