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#############################################################################
##
## Copyright (C) 2012 Riverbank Computing Limited.
## Copyright (C) 2006 Thorsten Marek.
## All right reserved.
##
## This file is part of PyQt.
##
## You may use this file under the terms of the GPL v2 or the revised BSD
## license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of the Riverbank Computing Limited nor the names
## of its contributors may be used to endorse or promote products
## derived from this software without specific prior written
## permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
##
#############################################################################
from PyQt4.uic.Compiler.misc import Literal, moduleMember
class ProxyMetaclass(type):
""" ProxyMetaclass is the meta-class for proxies. """
def __init__(*args):
""" Initialise the meta-class. """
# Initialise as normal.
type.__init__(*args)
# The proxy type object we have created.
proxy = args[0]
# Go through the proxy's attributes looking for other proxies.
for sub_proxy in proxy.__dict__.values():
if type(sub_proxy) is ProxyMetaclass:
# Set the module name of the contained proxy to the name of the
# container proxy.
sub_proxy.module = proxy.__name__
# Attribute hierachies are created depth first so any proxies
# contained in the sub-proxy whose module we have just set will
# already exist and have an incomplete module name. We need to
# revisit them and prepend the new name to their module names.
# Note that this should be recursive but with current usage we
# know there will be only one level to revisit.
for sub_sub_proxy in sub_proxy.__dict__.values():
if type(sub_sub_proxy) is ProxyMetaclass:
sub_sub_proxy.module = '%s.%s' % (proxy.__name__, sub_sub_proxy.module)
# Makes sure there is a 'module' attribute.
if not hasattr(proxy, 'module'):
proxy.module = ''
def __getattribute__(cls, name):
try:
return type.__getattribute__(cls, name)
except AttributeError:
# Make sure __init__()'s use of hasattr() works.
if name == 'module':
raise
# Avoid a circular import.
from PyQt4.uic.Compiler.qtproxies import LiteralProxyClass
return type(name, (LiteralProxyClass, ),
{"module": moduleMember(type.__getattribute__(cls, "module"),
type.__getattribute__(cls, "__name__"))})
def __str__(cls):
return moduleMember(type.__getattribute__(cls, "module"),
type.__getattribute__(cls, "__name__"))
def __or__(self, r_op):
return Literal("%s|%s" % (self, r_op))
def __eq__(self, other):
return str(self) == str(other)
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