##############################################################################
#
# Copyright (c) 2001, 2002 Zope Foundation 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.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE
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"""Proxy-related interfaces.
"""
from zope.interface import Interface
[docs]
class IProxyIntrospection(Interface):
"""Provides methods for indentifying proxies and extracting proxied objects
"""
def isProxy(obj, proxytype=None):
"""Check whether the given object is a proxy
If proxytype is not None, checkes whether the object is
proxied by the given proxytype.
"""
def sameProxiedObjects(ob1, ob2):
"""Check whether ob1 and ob2 are the same or proxies of the same object
"""
def getProxiedObject(obj):
"""Get the proxied Object
If the object isn't proxied, then just return the object.
"""
def setProxiedObject(ob1, ob2):
"""Set the underlying object for ob1 to ob2, returning the old object.
Raises TypeError if ob1 is not a proxy.
"""
def removeAllProxies(obj):
"""Get the proxied object with no proxies
If obj is not a proxied object, return obj.
The returned object has no proxies.
"""
def queryProxy(obj, proxytype, default=None):
"""Look for a proxy of the given type around the object
If no such proxy can be found, return the default.
"""
def queryInnerProxy(obj, proxytype, default=None):
"""Look for the inner-most proxy of the given type around the object
If no such proxy can be found, return the default.
If there is such a proxy, return the inner-most one.
"""