def getNodeController(self, request, node, submodel, model):
"""
Get a controller object to handle this node. If the node has no
controller= attribute, first check to see if there is an IController
adapter for our model.
"""
controllerName = node.attributes.get('controller')
controller = None
if model is None:
model = peek(self.modelStack)
if controllerName:
controllerStack = self.controllerStack
while controllerStack is not None:
namespace, controllerStack = controllerStack
if namespace is None:
continue
controller = namespace.getSubcontroller(request, node, model, controllerName)
if controller is not None:
break
else:
raise NotImplementedError("You specified controller name %s on "
"a node, but no wcfactory_%s method "
"was found in %s." % (controllerName,
controllerName,
filterStack(self.controllerStack)
))
elif node.attributes.get("model"):
controller = components.getAdapter(
model,
interfaces.IController,
None,
components.getAdapterClassWithInheritance)
return controller
def adaptToIModel(m, parent=None, submodel=None):
adapted = components.getAdapter(m, interfaces.IModel, None, components.getAdapterClassWithInheritance)
if adapted is None:
adapted = Wrapper(m)
adapted.parent = parent
adapted.name = submodel
return adapted
def __init__(self, model, *args, **kwargs):
view.View.__init__(self, model, *args, **kwargs)
self.model.addView(self)
# pretend self.foo is what the user now sees on their screen
self.foo = self.model.foo
self.random = self.model.random
self.controller = components.getAdapter(self.model, interfaces.IController, None)
def adaptToIModel(m, parent=None, submodel=None):
adapted = components.getAdapter(m, interfaces.IModel, None,
components.getAdapterClassWithInheritance)
if adapted is None:
adapted = Wrapper(m)
adapted.parent = parent
adapted.name = submodel
return adapted
def renderView(self, request):
if self.view is None:
if self.viewFactory is not None:
self.setView(self.makeView(self.model, None))
else:
self.setView(components.getAdapter(self.model, interfaces.IView, None))
self.view.setController(self)
return self.view.render(request, doneCallback=self.gatheredControllers)
def __init__(self, model, *args, **kwargs):
view.View.__init__(self, model, *args, **kwargs)
self.model.addView(self)
# pretend self.foo is what the user now sees on their screen
self.foo = self.model.foo
self.random = self.model.random
self.controller = components.getAdapter(self.model,
interfaces.IController, None)
def requestAvatar(self, avatarId, mind, *interfaces):
if self.avatars.has_key(avatarId):
avatar = self.avatars[avatarId]
else:
avatar = TestAvatar(avatarId)
self.avatars[avatarId] = avatar
avatar.login()
return (interfaces[0], components.getAdapter(avatar, interfaces[0]),
avatar.logout)
def testGetAdapter(self):
o = IntAdder()
self.assertEquals(o.add(3, 4), 7)
# get an object implementing IMultiply
multiplier = components.getAdapter(o, IMultiply, None)
# check that it complies with the IMultiply interface
self.assertEquals(multiplier.multiply(3, 4), 12)
def testGetAdapter(self):
o = IntAdder()
self.assertEquals(o.add(3, 4), 7)
# get an object implementing IMultiply
multiplier = components.getAdapter(o, IMultiply, None)
# check that it complies with the IMultiply interface
self.assertEquals(multiplier.multiply(3, 4), 12)
def requestAvatar(self, avatarId, mind, *interfaces):
if self.avatars.has_key(avatarId):
avatar = self.avatars[avatarId]
else:
avatar = TestAvatar(avatarId)
self.avatars[avatarId] = avatar
avatar.login()
return (interfaces[0], components.getAdapter(avatar, interfaces[0]),
avatar.logout)
def renderView(self, request):
if self.view is None:
if self.viewFactory is not None:
self.setView(self.makeView(self.model, None))
else:
self.setView(
components.getAdapter(self.model, interfaces.IView, None))
self.view.setController(self)
return self.view.render(request, doneCallback=self.gatheredControllers)
def getChild(self, path, request):
if path == '': path = 'index'
path = path.replace(".","_")
cm = getattr(self, "wchild_"+path, None)
if cm:
p = cm(request)
if isinstance(p, Deferred):
return util.DeferredResource(p)
adapter = components.getAdapter(p, IResource, None)
if adapter is not None:
return adapter
return Resource.getChild(self, path, request)
def getChild(self, path, request):
if path == '': path = 'index'
path = path.replace(".","_")
cm = getattr(self, "wchild_"+path, None)
if cm:
p = cm(request)
if isinstance(p, Deferred):
return util.DeferredResource(p)
adapter = components.getAdapter(p, IResource, None)
if adapter is not None:
return adapter
# maybe we want direct support for ModelLoader?
# cl = getattr(self, "wload_"+path, None) #???
return Resource.getChild(self, path, request)
def getChild(self, path, request):
if path == '': path = 'index'
path = path.replace(".", "_")
cm = getattr(self, "wchild_" + path, None)
if cm:
p = cm(request)
if isinstance(p, Deferred):
return util.DeferredResource(p)
adapter = components.getAdapter(p, IResource, None)
if adapter is not None:
return adapter
# maybe we want direct support for ModelLoader?
# cl = getattr(self, "wload_"+path, None) #???
return Resource.getChild(self, path, request)
def getNodeView(self, request, node, submodel, model):
view = None
viewName = node.attributes.get('view')
if model is None:
model = peek(self.modelStack)
# Look up a view factory.
if viewName:
viewStack = self.viewStack
while viewStack is not None:
namespace, viewStack = viewStack
if namespace is None:
continue
try:
view = namespace.getSubview(request, node, model, viewName)
except AttributeError:
# Was that from something in the viewStack that didn't
# have a getSubview?
if not hasattr(namespace, "getSubview"):
log.msg("Warning: There is no getSubview on %r" %
(namespace,))
continue
else:
# No, something else is really broken.
raise
if view is not None:
break
else:
raise NotImplementedError(
"You specified view name %s on a node %s, but no "
"wvfactory_%s method was found in %s. (Or maybe they were "
"found but they returned None.)" % (
viewName, node, viewName,
filterStack(self.viewStack)))
elif node.attributes.get("model"):
# If no "view" attribute was specified on the node, see if there
# is a IView adapter registerred for the model.
# First, see if the model is Componentized.
if isinstance(model, components.Componentized):
view = model.getAdapter(interfaces.IView)
if not view and hasattr(model, '__class__'):
view = components.getAdapter(model,
interfaces.IView,
None,
components.getAdapterClassWithInheritance)
return view
def getNodeView(self, request, node, submodel, model):
view = None
viewName = node.attributes.get('view')
if model is None:
model = peek(self.modelStack)
# Look up a view factory.
if viewName:
viewStack = self.viewStack
while viewStack is not None:
namespace, viewStack = viewStack
if namespace is None:
continue
try:
view = namespace.getSubview(request, node, model, viewName)
except AttributeError:
# Was that from something in the viewStack that didn't
# have a getSubview?
if not hasattr(namespace, "getSubview"):
log.msg("Warning: There is no getSubview on %r" %
(namespace, ))
continue
else:
# No, something else is really broken.
raise
if view is not None:
break
else:
raise NotImplementedError(
"You specified view name %s on a node %s, but no "
"wvfactory_%s method was found in %s. (Or maybe they were "
"found but they returned None.)" %
(viewName, node, viewName, filterStack(self.viewStack)))
elif node.attributes.get("model"):
# If no "view" attribute was specified on the node, see if there
# is a IView adapter registerred for the model.
# First, see if the model is Componentized.
if isinstance(model, components.Componentized):
view = model.getAdapter(interfaces.IView)
if not view and hasattr(model, '__class__'):
view = components.getAdapter(
model, interfaces.IView, None,
components.getAdapterClassWithInheritance)
return view
def setDataCallback(self, result, request, node):
model = result
view = None
if isinstance(model, components.Componentized):
view = model.getAdapter(interfaces.IView)
if not view and hasattr(model, '__class__'):
view = components.getAdapter(model,
interfaces.IView,
None,
components.getAdapterClassWithInheritance)
if view:
view["id"] = self.attributes.get('id', '')
view.templateNode = node
view.controller = self.controller
return view.setDataCallback(result, request, node)
else:
return Widget.setDataCallback(self, result, request, node)
def setDataCallback(self, result, request, node):
model = result
view = None
if isinstance(model, components.Componentized):
view = model.getAdapter(interfaces.IView)
if not view and hasattr(model, '__class__'):
view = components.getAdapter(
model, interfaces.IView, None,
components.getAdapterClassWithInheritance)
if view:
view["id"] = self.attributes.get('id', '')
view.templateNode = node
view.controller = self.controller
return view.setDataCallback(result, request, node)
else:
return Widget.setDataCallback(self, result, request, node)
def getNodeController(self, request, node, submodel, model):
"""
Get a controller object to handle this node. If the node has no
controller= attribute, first check to see if there is an IController
adapter for our model.
"""
controllerName = node.attributes.get('controller')
controller = None
if model is None:
model = peek(self.modelStack)
# Look up a controller factory.
if controllerName:
#if not node.hasAttribute('name'):
# warnings.warn("POTENTIAL ERROR: %s had a controller, but not a "
# "'name' attribute." % node)
controllerStack = self.controllerStack
while controllerStack is not None:
namespace, controllerStack = controllerStack
if namespace is None:
continue
controller = namespace.getSubcontroller(request, node, model, controllerName)
if controller is not None:
break
else:
raise NotImplementedError("You specified controller name %s on "
"a node, but no wcfactory_%s method "
"was found in %s." % (controllerName,
controllerName,
filterStack(self.controllerStack)
))
elif node.attributes.get("model"):
# If no "controller" attribute was specified on the node, see if
# there is a IController adapter registerred for the model.
controller = components.getAdapter(
model,
interfaces.IController,
None,
components.getAdapterClassWithInheritance)
return controller
def dispatchResult(self, request, node, result):
"""
Check a given result from handling a node and hand it to a process*
method which will convert the result into a node and insert it
into the DOM tree. Return the new node.
"""
if not isinstance(result, defer.Deferred):
adapter = components.getAdapter(result, INodeMutator, None, components.getAdapterClassWithInheritance)
if adapter is None:
raise NotImplementedError(
"Your factory method returned %s, but there is no "
"INodeMutator adapter registerred for %s." %
(result, getattr(result, "__class__",
None) or type(result)))
result = adapter.generate(request, node)
if isinstance(result, defer.Deferred):
self.outstandingCallbacks += 1
result.addCallback(self.dispatchResultCallback, request, node)
result.addErrback(self.renderFailure, request)
return result
def getNodeController(self, request, node, submodel, model):
"""
Get a controller object to handle this node. If the node has no
controller= attribute, first check to see if there is an IController
adapter for our model.
"""
controllerName = node.attributes.get('controller')
controller = None
if model is None:
model = peek(self.modelStack)
# Look up a controller factory.
if controllerName:
#if not node.hasAttribute('name'):
# warnings.warn("POTENTIAL ERROR: %s had a controller, but not a "
# "'name' attribute." % node)
controllerStack = self.controllerStack
while controllerStack is not None:
namespace, controllerStack = controllerStack
if namespace is None:
continue
controller = namespace.getSubcontroller(
request, node, model, controllerName)
if controller is not None:
break
else:
raise NotImplementedError(
"You specified controller name %s on "
"a node, but no wcfactory_%s method "
"was found in %s." % (controllerName, controllerName,
filterStack(self.controllerStack)))
elif node.attributes.get("model"):
# If no "controller" attribute was specified on the node, see if
# there is a IController adapter registerred for the model.
controller = components.getAdapter(
model, interfaces.IController, None,
components.getAdapterClassWithInheritance)
return controller
def getNodeView(self, request, node, submodel, model):
view = None
viewName = node.attributes.get('view')
if model is None:
model = peek(self.modelStack)
if viewName:
viewStack = self.viewStack
while viewStack is not None:
namespace, viewStack = viewStack
if namespace is None:
continue
try:
view = namespace.getSubview(request, node, model, viewName)
except AttributeError:
if not hasattr(namespace, "getSubview"):
log.msg("Warning: There is no getSubview on %r" %
(namespace,))
continue
else:
raise
if view is not None:
break
else:
raise NotImplementedError(
"You specified view name %s on a node %s, but no "
"wvfactory_%s method was found in %s. (Or maybe they were "
"found but they returned None.)" % (
viewName, node, viewName,
filterStack(self.viewStack)))
elif node.attributes.get("model"):
if isinstance(model, components.Componentized):
view = model.getAdapter(interfaces.IView)
if not view and hasattr(model, '__class__'):
view = components.getAdapter(model,
interfaces.IView,
None,
components.getAdapterClassWithInheritance)
return view
def dispatchResult(self, request, node, result):
"""
Check a given result from handling a node and hand it to a process*
method which will convert the result into a node and insert it
into the DOM tree. Return the new node.
"""
if not isinstance(result, defer.Deferred):
adapter = components.getAdapter(
result, INodeMutator, None,
components.getAdapterClassWithInheritance)
if adapter is None:
raise NotImplementedError(
"Your factory method returned %s, but there is no "
"INodeMutator adapter registerred for %s." %
(result, getattr(result, "__class__", None)
or type(result)))
result = adapter.generate(request, node)
if isinstance(result, defer.Deferred):
self.outstandingCallbacks += 1
result.addCallback(self.dispatchResultCallback, request, node)
result.addErrback(self.renderFailure, request)
# Got to wait until the callback comes in
return result
def getView(self):
return components.getAdapter(self.model, interfaces.IView, None)
def __init__(self, model, *args, **kwargs):
view.View.__init__(self, model, *args, **kwargs)
self.model.addView(self)
self.foo = self.model.foo
self.random = self.model.random
self.controller = components.getAdapter(self.model, interfaces.IController, None)
def testParentInterface(self):
o = Sub()
adder = components.getAdapter(o, IAdder, None)
self.assertIdentical(o, adder)
def testGetSubAdapter(self):
o = MultiplyAndAdd()
self.assert_( not components.implements(o, IFoo) )
foo = components.getAdapter(o, IFoo, None)
self.assert_( isinstance(foo, FooAdapterForMAA) )
def testNoAdapter(self):
o = Sub()
multiplier = components.getAdapter(o, IMultiply, None)
self.assertEquals(multiplier, None)
def getCollection(obj):
"""Get an object implementing ICollection for obj."""
if components.implements(obj, IConfigurator):
obj = obj.getInstance()
return components.getAdapter(obj, ICollection, None)
def testGetAdapter(self):
o = IntAdder()
self.assertEquals(o.add(3, 4), 7)
multiplier = components.getAdapter(o, IMultiply, None)
self.assertEquals(multiplier.multiply(3, 4), 12)
def testSelfIsAdapter(self):
o = IntAdder()
adder = components.getAdapter(o, IAdder, None)
self.assert_( o is adder )
def testGetSubAdapter(self):
o = MultiplyAndAdd()
self.assert_( not components.implements(o, IFoo) )
foo = components.getAdapter(o, IFoo, None)
self.assert_( isinstance(foo, FooAdapterForMAA) )
def testParentInterface(self):
o = Sub()
adder = components.getAdapter(o, IAdder, None)
self.assertIdentical(o, adder)
def getView(self):
return components.getAdapter(self.model, interfaces.IView, None)
from twisted.python.components import getAdapter, registerAdapter, Interface
class IA(Interface): # Define an interface that implements
def a(self): # a sample method method, "a".
"A sample method."
class A: # define an adapter class
__implements__ = IA # that implements our IA interface
def __init__(self, original): # keep track of the object being wrapped
self.original = original
def a(self): # define the method required by our
print 'a', # interface, and have it print 'a'
self.original.b() # then call back to the object we're adapting
class B: # the hapless B class doesn't know anything
def b(self): # about its adapter, and it defines one
print 'b' # method which displays 'b'
registerAdapter(A, B, IA) # register A to adapt B for interface IA
adapter = getAdapter(B(), IA,
None) # adapt a new B instance with an A instance
adapter.a() # call the method defined by interface IA
def render(self, request):
self.setUp(request)
self.view = components.getAdapter(self.model, interfaces.IView, None)
self.view.setController(self)
return self.view.render(request)
def testNoAdapter(self):
o = Sub()
multiplier = components.getAdapter(o, IMultiply, None)
self.assertEquals(multiplier, None)
def modelFactory(self, outObj):
adapt = getAdapter(outObj, interfaces.IModel, outObj)
return adapt
def testSelfIsAdapter(self):
o = IntAdder()
adder = components.getAdapter(o, IAdder, None)
self.assert_( o is adder )
def getConfigurator(obj):
"""Get an object implement IConfigurator for obj."""
return components.getAdapter(obj, IConfigurator, None)
def modelFactory(self, outObj):
adapt = getAdapter(outObj, interfaces.IModel, outObj)
# print 'factorizing', adapt
return adapt
def render(self, request):
self.setUp(request)
self.view = components.getAdapter(self.model, interfaces.IView, None)
self.view.setController(self)
return self.view.render(request)
def modelFactory(self, outObj):
adapt = getAdapter(outObj, interfaces.IModel, outObj)
# print 'factorizing', adapt
return adapt
