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- # Copyright (c) 2010 Riverbank Computing Limited.
- # Copyright (c) 2006 Torsten Marek.
- import sys
- import os.path
- from PyQt4.uic.exceptions import NoSuchWidgetError, WidgetPluginError
- if sys.hexversion >= 0x03000000:
- from PyQt4.uic.port_v3.load_plugin import load_plugin
- else:
- from PyQt4.uic.port_v2.load_plugin import load_plugin
- # The list of directories that are searched for widget plugins. This is
- # exposed as part of the API.
- widgetPluginPath = [os.path.join(os.path.dirname(__file__), 'widget-plugins')]
- MATCH = True
- NO_MATCH = False
- MODULE = 0
- CW_FILTER = 1
- class QObjectCreator(object):
- def __init__(self, creatorPolicy):
- self._cpolicy = creatorPolicy
- self._cwFilters = []
- self._modules = [self._cpolicy.createQtGuiWrapper()]
- # Get the optional plugins.
- for plugindir in widgetPluginPath:
- try:
- plugins = os.listdir(plugindir)
- except:
- plugins = []
- for filename in plugins:
- if not filename.endswith('.py'):
- continue
- filename = os.path.join(plugindir, filename)
- plugin_globals = {
- "MODULE": MODULE,
- "CW_FILTER": CW_FILTER,
- "MATCH": MATCH,
- "NO_MATCH": NO_MATCH}
- plugin_locals = {}
- if load_plugin(open(filename), plugin_globals, plugin_locals):
- return # Esto está puesto para que no falle
- pluginType = plugin_locals["pluginType"]
- if pluginType == MODULE:
- modinfo = plugin_locals["moduleInformation"]()
- self._modules.append(self._cpolicy.createModuleWrapper(*modinfo))
- elif pluginType == CW_FILTER:
- self._cwFilters.append(plugin_locals["getFilter"]())
- else:
- raise WidgetPluginError("Unknown plugin type of %s" % filename)
- self._customWidgets = self._cpolicy.createCustomWidgetLoader()
- self._modules.append(self._customWidgets)
- def createQObject(self, classname, *args, **kwargs):
- classType = self.findQObjectType(classname)
- if classType:
- return self._cpolicy.instantiate(classType, *args, **kwargs)
- raise NoSuchWidgetError(classname)
- def invoke(self, rname, method, args=()):
- return self._cpolicy.invoke(rname, method, args)
- def findQObjectType(self, classname):
- for module in self._modules:
- w = module.search(classname)
- if w is not None:
- return w
- return None
- def getSlot(self, obj, slotname):
- return self._cpolicy.getSlot(obj, slotname)
- def addCustomWidget(self, widgetClass, baseClass, module):
- for cwFilter in self._cwFilters:
- match, result = cwFilter(widgetClass, baseClass, module)
- if match:
- widgetClass, baseClass, module = result
- break
- self._customWidgets.addCustomWidget(widgetClass, baseClass, module)
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