o i@sddlZddlmZmZmZmZmZmZmZm Z ddl m Z ddl m Z mZmZddlmZmZmZer Will result in this final output::
Hello, world.
Nr!r!r!r!r"rendererusr4c@sneZdZUdZdZeeed<ddeefddZde de ee dgd ffd d Z d ee dd fd dZ dS)Elementa Base for classes which can render part of a page. An Element is a renderer that can be embedded in a stan document and can hook its template (from the loader) up to render methods. An Element might be used to encapsulate the rendering of a complex piece of data which is to be displayed in multiple different contexts. The Element allows the rendering logic to be easily re-used in different ways. Element returns render methods which are registered using L{twisted.web._element.renderer}. For example:: class Menu(Element): @renderer def items(self, request, tag): .... Render methods are invoked with two arguments: first, the L{twisted.web.http.Request} being served and second, the tag object which "invoked" the render method. @ivar loader: The factory which will be used to load documents to return from C{render}. NloadercCs|dur ||_dSdSr')r6)r r6r!r!r"__init__s zElement.__init__namerrrcCs$t||d}|durt|||S)z= Look up and return the named render method. N)r4r(r )r r8r+r!r!r"lookupRenderMethods zElement.lookupRenderMethodrequestcCs|j}|dur t||S)a Implement L{IRenderable} to allow one L{Element} to be embedded in another's template or rendering output. (This will simply load the template from the C{loader}; when used in a template, the flattening engine will keep track of this object separately as the object to lookup renderers on and call L{Element.renderer} to look them up. The resulting object from this method is not directly associated with this L{Element}.) N)r6r load)r r:r6r!r!r"renders zElement.renderr')r,r-r.r/r6rr__annotations__r7r1rrr9r<r!r!r!r"r5s   r5)rN)rtypingrrrrrrrr Zzope.interfacer Ztwisted.web.errorr r r Ztwisted.web.iwebrrrZtwisted.web.templaterrrr0rrr3r4r5r!r!r!r"s( M