/usr/lib/python2.7/dist-packages/PyQt4/uic/Compiler/qobjectcreator.py is in python-qt4 4.11.2+dfsg-1.
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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."
##
#############################################################################
import logging
try:
set()
except NameError:
from sets import Set as set
from PyQt4.uic.Compiler.indenter import write_code
from PyQt4.uic.Compiler.qtproxies import QtGui, Literal, strict_getattr
logger = logging.getLogger(__name__)
DEBUG = logger.debug
class _QtGuiWrapper(object):
def search(clsname):
try:
return strict_getattr(QtGui, clsname)
except AttributeError:
return None
search = staticmethod(search)
class _ModuleWrapper(object):
def __init__(self, name, classes):
if "." in name:
idx = name.rfind(".")
self._package = name[:idx]
self._module = name[idx + 1:]
else:
self._package = None
self._module = name
self._classes = classes
self._used = False
def search(self, cls):
if cls in self._classes:
self._used = True
return type(cls, (QtGui.QWidget,), {"module": self._module})
else:
return None
def _writeImportCode(self):
if self._used:
if self._package is None:
write_code("import %s" % self._module)
else:
write_code("from %s import %s" % (self._package, self._module))
class _CustomWidgetLoader(object):
def __init__(self):
self._widgets = {}
self._usedWidgets = set()
def addCustomWidget(self, widgetClass, baseClass, module):
assert widgetClass not in self._widgets
self._widgets[widgetClass] = (baseClass, module)
def _resolveBaseclass(self, baseClass):
try:
for x in range(0, 10):
try: return strict_getattr(QtGui, baseClass)
except AttributeError: pass
baseClass = self._widgets[baseClass][0]
else:
raise ValueError("baseclass resolve took too long, check custom widgets")
except KeyError:
raise ValueError("unknown baseclass %s" % baseClass)
def search(self, cls):
try:
baseClass = self._resolveBaseclass(self._widgets[cls][0])
DEBUG("resolved baseclass of %s: %s" % (cls, baseClass))
except KeyError:
return None
self._usedWidgets.add(cls)
return type(cls, (baseClass, ), {"module" : ""})
def _writeImportCode(self):
imports = {}
for widget in self._usedWidgets:
_, module = self._widgets[widget]
imports.setdefault(module, []).append(widget)
for module, classes in imports.items():
write_code("from %s import %s" % (module, ", ".join(classes)))
class CompilerCreatorPolicy(object):
def __init__(self):
self._modules = []
def createQtGuiWrapper(self):
return _QtGuiWrapper
def createModuleWrapper(self, name, classes):
mw = _ModuleWrapper(name, classes)
self._modules.append(mw)
return mw
def createCustomWidgetLoader(self):
cw = _CustomWidgetLoader()
self._modules.append(cw)
return cw
def instantiate(self, clsObject, objectname, ctor_args, is_attribute=True, no_instantiation=False):
return clsObject(objectname, is_attribute, ctor_args, no_instantiation)
def invoke(self, rname, method, args):
return method(rname, *args)
def getSlot(self, object, slotname):
return Literal("%s.%s" % (object, slotname))
def _writeOutImports(self):
for module in self._modules:
module._writeImportCode()
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