Ejemplo n.º 1
0
    def providedBy(self, ob):
        """Is the interface implemented by an object

          >>> from reqs.zope.interface import *
          >>> class I1(Interface):
          ...     pass
          >>> class C(object):
          ...     implements(I1)
          >>> c = C()
          >>> class X(object):
          ...     pass
          >>> x = X()
          >>> I1.providedBy(x)
          False
          >>> I1.providedBy(C)
          False
          >>> I1.providedBy(c)
          True
          >>> directlyProvides(x, I1)
          >>> I1.providedBy(x)
          True
          >>> directlyProvides(C, I1)
          >>> I1.providedBy(C)
          True

        """
        spec = providedBy(ob)
        return self in spec._implied
Ejemplo n.º 2
0
    def addComponent(self, component, ignoreClass=0):
        """
        Add a component to me, for all appropriate interfaces.

        In order to determine which interfaces are appropriate, the component's
        provided interfaces will be scanned.

        If the argument 'ignoreClass' is True, then all interfaces are
        considered appropriate.

        Otherwise, an 'appropriate' interface is one for which its class has
        been registered as an adapter for my class according to the rules of
        getComponent.

        @return: the list of appropriate interfaces
        """
        for iface in declarations.providedBy(component):
            if (ignoreClass or
                (self.locateAdapterClass(self.__class__, iface, None)
                 == component.__class__)):
                self._adapterCache[reflect.qual(iface)] = component
Ejemplo n.º 3
0
def _hook(iface, ob, lookup=globalRegistry.lookup1):
    factory = lookup(declarations.providedBy(ob), iface)
    if factory is None:
        return None
    else:
        return factory(ob)