def __call__(self, econtext):
name = StringExpr.__call__(self, econtext)
context = econtext.vars['context']
request = econtext.vars['request']
view = econtext.vars['view']
# Try to look up the provider.
provider = zope.component.queryMultiAdapter(
(context, request, view), interfaces.IContentProvider, name)
# Provide a useful error message, if the provider was not found.
if provider is None:
raise interfaces.ContentProviderLookupError(name)
if getattr(provider, '__of__', None) is not None:
provider = provider.__of__(context)
# Insert the data gotten from the context
addTALNamespaceData(provider, econtext)
# Stage 1: Do the state update.
provider.update()
# Stage 2: Render the HTML content.
return provider.render()
def __call__(self, econtext):
name = super(ProviderExpression, self).__call__(econtext)
view = econtext.vars['view']
context = view.context
request = view.request
# Try to look up the provider.
provider = zope.component.queryMultiAdapter(
(context, request, view), interfaces.IContentProvider, name)
# Provide a useful error message, if the provider was not found.
if provider is None:
raise interfaces.ContentProviderLookupError(name)
# add the __name__ attribute if it implements ILocation
if ILocation.providedBy(provider):
provider.__name__ = name
# Insert the data gotten from the context
addTALNamespaceData(provider, econtext)
# Stage 1: Do the state update.
zope.event.notify(interfaces.BeforeUpdateEvent(provider, request))
provider.update()
# Stage 2: Render the HTML content.
return provider.render()
def render_content_provider(econtext, name):
name = name.strip()
context = econtext.get('context')
request = econtext.get('request')
view = econtext.get('view')
cp = queryMultiAdapter((context, request, view),
IContentProvider,
name=name)
# provide a useful error message, if the provider was not found.
if cp is None:
raise ContentProviderLookupError(name)
# add the __name__ attribute if it implements ILocation
if ILocation.providedBy(cp):
cp.__name__ = name
# Insert the data gotten from the context
addTALNamespaceData(cp, econtext)
# BBB: This is where we're different:
if getattr(cp, '__of__', None) is not None:
cp = cp.__of__(context)
# Stage 1: Do the state update.
if BeforeUpdateEvent is not None:
notify(BeforeUpdateEvent(cp, request))
cp.update()
# Stage 2: Render the HTML content.
return cp.render()
def render_content_provider(econtext, name):
name = name.strip()
context = econtext.get('context')
request = econtext.get('request')
view = econtext.get('view')
cp = zope.component.queryMultiAdapter(
(context, request, view), IContentProvider, name=name)
# provide a useful error message, if the provider was not found.
if cp is None:
raise ContentProviderLookupError(name)
# add the __name__ attribute if it implements ILocation
if ILocation.providedBy(cp):
cp.__name__ = name
# Insert the data gotten from the context
addTALNamespaceData(cp, econtext)
# Stage 1: Do the state update.
if BeforeUpdateEvent is not None:
zope.event.notify(BeforeUpdateEvent(cp, request))
cp.update()
# Stage 2: Render the HTML content.
return cp.render()
def __call__(self, econtext):
name = super(Z2ProviderExpression, self).__call__(econtext)
context = econtext.vars['context']
request = econtext.vars['request']
view = econtext.vars['view']
# Try to look up the provider.
provider = zope.component.queryMultiAdapter(
(context, request, view), cp_interfaces.IContentProvider, name)
# Provide a useful error message, if the provider was not found.
if provider is None:
raise cp_interfaces.ContentProviderLookupError(name)
# XXX We can either wrap this in the context and have three test
# failures in directives.txt or wrap it in the view (aka our
# __parent__) and have one test failure in provider.txt which also
# happens when we don't wrap this at all anymore :(
# Removing all the AQ-wrapping is probably the way to go here.
if getattr(provider, '__of__', None) is not None:
provider = provider.__of__(context)
# Insert the data gotten from the context
addTALNamespaceData(provider, econtext)
# Stage 1: Do the state update.
provider.update()
# Stage 2: Render the HTML content.
return provider.render()
def __call__(self, econtext):
name = StringExpr.__call__(self, econtext)
context = econtext.vars['context']
request = econtext.vars['request']
view = econtext.vars['view']
# Try to look up the provider.
provider = zope.component.queryMultiAdapter(
(context, request, view), interfaces.IContentProvider, name)
# Provide a useful error message, if the provider was not found.
if provider is None:
raise interfaces.ContentProviderLookupError(name)
if getattr(provider, '__of__', None) is not None:
provider = provider.__of__(context)
# Insert the data gotten from the context
addTALNamespaceData(provider, econtext)
# Stage 1: Do the state update.
provider.update()
# Stage 2: Render the HTML content.
return provider.render()
def render_content_provider(econtext, name):
name = name.strip()
context = econtext.get("context")
request = econtext.get("request")
view = econtext.get("view")
cp = zope.component.queryMultiAdapter((context, request, view),
IContentProvider,
name=name)
# provide a useful error message, if the provider was not found.
# Be sure to provide the objects in addition to the name so
# debugging ZCML registrations is possible
if cp is None:
raise ContentProviderLookupError(name, (context, request, view))
# add the __name__ attribute if it implements ILocation
if ILocation.providedBy(cp):
cp.__name__ = name
# Insert the data gotten from the context
addTALNamespaceData(cp, econtext)
# Stage 1: Do the state update.
zope.event.notify(BeforeUpdateEvent(cp, request))
cp.update()
# Stage 2: Render the HTML content.
return cp.render()
def __call__(self, econtext):
name = super(Z2ProviderExpression, self).__call__(econtext)
context = econtext.vars['context']
request = econtext.vars['request']
view = econtext.vars['view']
# Try to look up the provider.
provider = zope.component.queryMultiAdapter(
(context, request, view), cp_interfaces.IContentProvider, name)
# Provide a useful error message, if the provider was not found.
if provider is None:
raise cp_interfaces.ContentProviderLookupError(name)
# XXX We can either wrap this in the context and have three test
# failures in directives.txt or wrap it in the view (aka our
# __parent__) and have one test failure in provider.txt which also
# happens when we don't wrap this at all anymore :(
# Removing all the AQ-wrapping is probably the way to go here.
if getattr(provider, '__of__', None) is not None:
provider = provider.__of__(context)
# Insert the data gotten from the context
addTALNamespaceData(provider, econtext)
# Stage 1: Do the state update.
provider.update()
# Stage 2: Render the HTML content.
return provider.render()
def render_content_provider(econtext, name):
name = name.strip()
context = econtext.get("context")
request = econtext.get("request")
view = econtext.get("view")
cp = zope.component.queryMultiAdapter(
(context, request, view), IContentProvider, name=name
)
# provide a useful error message, if the provider was not found.
# Be sure to provide the objects in addition to the name so
# debugging ZCML registrations is possible
if cp is None:
raise ContentProviderLookupError(name, (context, request, view))
# add the __name__ attribute if it implements ILocation
if ILocation.providedBy(cp):
cp.__name__ = name
# Insert the data gotten from the context
addTALNamespaceData(cp, econtext)
# Stage 1: Do the state update.
zope.event.notify(BeforeUpdateEvent(cp, request))
cp.update()
# Stage 2: Render the HTML content.
return cp.render()
def renderBlockProvider(self, context):
name = u'zug.simplelayout.block'
context = context
request = self.request
view = self
provider = zope.component.queryMultiAdapter(
(context, request, view), cp_interfaces.IContentProvider, name)
addTALNamespaceData(provider, context)
provider.update()
return provider.render()
def blockRenderer(self,name="simplelayout.portlet.listing"):
manager = queryMultiAdapter((self.context, self.request, self),
IViewletManager, name)
viewlet_adapters = getAdapters(
(manager.context, manager.request, manager.__parent__, manager),
IViewlet)
if manager is None:
return ''
addTALNamespaceData(manager, self.context)
manager.update()
return manager.render()
def renderBlockProvider(self, context):
#logger.info('sl viewlet renderer not cached')
view = self
block = context
request = self.request
blockconf = IBlockConfig(context)
name = blockconf.viewlet_manager
#Paragraph is our example, this content type has no ViewletManager
#so it should use simplelayout.base.block
default = 'block'
prefix = 'simplelayout.base'
#first time we have to generate the viewletManager name.
#so we have the possibility to change the manager later.
if name is None:
#now build the viewletManager name from given prefix and
#block.__class__.__name__ (ClassName)
name = '%s.%s' % (prefix, block.__class__.__name__)
blockconf.viewlet_manager = name
provider = None
counter = 0
while provider is None and counter < 10:
provider = zope.component.queryMultiAdapter(
(block, request, view), cp_interfaces.IContentProvider, name)
counter += 1
if provider is None:
name = '%s.%s' % (prefix, default)
#if provider is still None
if provider is None:
return 'Something is wrong - pls debug'
addTALNamespaceData(provider, block)
provider.update()
return provider.render()
def render_extension(econtext, name):
"""TALES extension renderer
See :ref:`tales` for complete description.
The requested extension can be called with our without arguments, like in
${structure:tales:my_expression} or ${structure:tales:my_expression(arg1, arg2)}.
In the second form, arguments will be passed to the "render" method; arguments can be
static (like strings or integers), or can be variables defined into current template
context; other Python expressions including computations or functions calls are actually
not supported, but dotted syntax is supported to access inner attributes of variables.
"""
def get_value(econtext, arg):
"""Extract argument value from context
Extension expression language is quite simple. Values can be given as
positioned strings, integers or named arguments of the same types.
"""
arg = arg.strip()
if arg.startswith('"') or arg.startswith("'"):
# may be a quoted string...
return arg[1:-1]
if '=' in arg:
key, value = arg.split('=', 1)
value = get_value(econtext, value)
return {key.strip(): value}
try:
arg = int(arg) # check integer value
except ValueError:
args = arg.split('.')
result = econtext.get(args.pop(0))
for arg in args: # pylint: disable=redefined-argument-from-local
result = getattr(result, arg)
return result
else:
return arg
name = name.strip()
context = econtext.get('context')
request = econtext.get('request')
view = econtext.get('view')
args, kwargs = [], {}
func_match = FUNCTION_EXPRESSION.match(name)
if func_match:
name, arguments = func_match.groups()
for arg in map(lambda x: get_value(econtext, x), ARGUMENTS_EXPRESSION.findall(arguments)):
if isinstance(arg, dict):
kwargs.update(arg)
else:
args.append(arg)
extension = queryMultiAdapter((context, request, view), ITALESExtension, name=name)
if extension is None:
extension = queryMultiAdapter((context, request), ITALESExtension, name=name)
if extension is None:
extension = queryAdapter(context, ITALESExtension, name=name)
# return an empty string if the extension was not found.
if extension is None:
return ''
# Insert the data gotten from the context
addTALNamespaceData(extension, econtext)
return extension.render(*args, **kwargs)
def render_content_provider(econtext, name): # pylint: disable=too-many-locals,too-many-statements
"""TALES provider: content provider
This TALES expression is used to render a registered "content provider", which
is an adapter providing IContentProvider interface; adapter lookup is based on
current context, request and view.
The requested provider can be called with our without arguments, like in
${structure:provider:my_provider} or ${structure:provider:my_provider(arg1, arg2)}.
In the second form, arguments will be passed to the "update" method; arguments can be
static (like strings or integers), or can be variables defined into current template
context; other Python expressions including computations or functions calls are actually
not supported, but dotted syntax is supported to access inner attributes of variables.
Provider arguments can be passed by position but can also be passed by name, using classic
syntax as in ${structure:provider:my_provider(arg1, arg3=var3)}
"""
def get_provider(name):
# we first look into request annotations to check if a provider implementation has
# already been provided during traversal; if not, a simple adapter lookup is done
provider = get_request_data(request, 'provider:{}:factory'.format(name))
# if using request annotations, provider can be given as a "direct" factory or as a
# dict; if a dict is provided, it's keys are interfaces or classes that the current
# context class have to provide or inherit from, and it's matching values are the
# provider factories.
# if provider is given as a dict, it should be ordered using an OrderedDict so thet
# more specific interfaces are provided first!
if isinstance(provider, dict):
for intf, factory in provider.items():
if (is_interface(intf) and intf.providedBy(context)) or \
(inspect.isclass(intf) and isinstance(context, intf)):
provider = factory
break
else:
provider = None
# if provider is a callable, we call it!
if callable(provider):
provider = provider(context, request, view)
if provider is None:
provider = registry.queryMultiAdapter((context, request, view), IContentProvider,
name=name)
if provider is not None:
econtext['provider'] = provider
return provider
def get_value(arg):
"""Extract argument value from context
Extension expression language is quite simple. Values can be given as
positioned strings, integers or named arguments of the same types.
"""
arg = arg.strip()
if arg.startswith('"') or arg.startswith("'"):
# may be a quoted string...
return arg[1:-1]
if '=' in arg:
key, value = arg.split('=', 1)
value = get_value(value)
return {key.strip(): value}
try:
arg = int(arg) # check integer value
except ValueError:
args = arg.split('.')
result = econtext.get(args.pop(0))
for arg in args: # pylint: disable=redefined-argument-from-local
result = getattr(result, arg)
return result
else:
return arg
def get_context_arg(arg):
"""Extract a value if present in kwargs, otherwise look into context"""
if arg in kwargs:
return kwargs.pop(arg)
return econtext.get(arg)
name = name.strip()
args, kwargs = [], {}
func_match = FUNCTION_EXPRESSION.match(name)
if func_match:
name, arguments = func_match.groups()
for arg in map(get_value, ARGUMENTS_EXPRESSION.findall(arguments)):
if isinstance(arg, dict):
kwargs.update(arg)
else:
args.append(arg)
else:
match = CONTENT_PROVIDER_NAME.match(name)
if match:
name = match.groups()[0]
else:
raise ContentProviderLookupError(name)
context = get_context_arg('context')
request = get_context_arg('request')
view = get_context_arg('view')
registry = request.registry
provider = get_provider(name)
# raise an exception if the provider was not found.
if provider is None:
raise ContentProviderLookupError(name)
# add the __name__ attribute if it implements ILocation
if ILocation.providedBy(provider):
provider.__name__ = name
# Insert the data gotten from the context
addTALNamespaceData(provider, econtext)
# Stage 1: Do the state update
registry.notify(BeforeUpdateEvent(provider, request))
provider.update(*args, **kwargs)
# Stage 2: Render the HTML content
return provider.render()
def traverse(self, name, furtherPath):
provider = ContentProviders.traverse(self, name, furtherPath)
if self.engine is not None:
unproxied = removeSecurityProxy(provider)
addTALNamespaceData(unproxied, self.engine)
return provider
def traverse(self, name, furtherPath):
provider = ContentProviders.traverse(self, name, furtherPath)
if self.engine is not None:
unproxied = removeSecurityProxy(provider)
addTALNamespaceData(unproxied, self.engine)
return provider
