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a k�h7 � @ s� d dl mZmZmZmZmZmZmZ d dlm Z d dl m Z m Z m Z d dlmZmZmZ erld dlmZmZ ed�ZG dd� d�Zeed �d d �Zed d �dd��Ze e�G dd� d��Zd S )� )� TYPE_CHECKING�Callable�List�Optional�TypeVar�Union�overload)� implementer)�MissingRenderMethod�MissingTemplateLoader�UnexposedMethodError)� IRenderable�IRequest�ITemplateLoader)� Flattenable�Tag�Tc @ st e Zd ZdZeed�dd�Ze� Zeee ed�dd��Z eee e e ee f d�d d��Z efee eed�d d�Z d S ) �Exposea/ Helper for exposing methods for various uses using a simple decorator-style callable. Instances of this class can be called with one or more functions as positional arguments. The names of these functions will be added to a list on the class object of which they are methods. )�funcObjs�returnc G s@ |s t d��|D ]&}t|dg �}|�| � t|d|� q|d S )a; Add one or more functions to the set of exposed functions. This is a way to declare something about a class definition, similar to L{zope.interface.implementer}. Use it like this:: magic = Expose('perform extra magic') class Foo(Bar): def twiddle(self, x, y): ... def frob(self, a, b): ... magic(twiddle, frob) Later you can query the object:: aFoo = Foo() magic.get(aFoo, 'twiddle')(x=1, y=2) The call to C{get} will fail if the name it is given has not been exposed using C{magic}. @param funcObjs: One or more function objects which will be exposed to the client. @return: The first of C{funcObjs}. z,expose() takes at least 1 argument (0 given)�exposedThroughr )� TypeError�getattr�append�setattr)�selfr ZfObjr � r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/twisted/web/_element.py�__call__" s zExpose.__call__)�instance� methodNamer c C s d S �Nr )r r r r r r �getH s z Expose.get)r r �defaultr c C s d S r! r )r r r r# r r r r" L s c C s< t ||d�}t |dg �}| |vr8|| ju r4t| |��|S |S )aB Retrieve an exposed method with the given name from the given instance. @raise UnexposedMethodError: Raised if C{default} is not specified and there is no exposed method with the given name. @return: A callable object for the named method assigned to the given instance. Nr )r � _nodefaultr )r r r r# �methodr r r r r" P s N) �__name__� __module__� __qualname__�__doc__r r �objectr$ r �strr" r r r r r r r s $ ��r )�thunkr c C s t � }| j|_|S r! )r r) )r, Zexposer r r �exposere s r- N)r c C s dS )a� Decorate with L{renderer} to use methods as template render directives. For example:: class Foo(Element): @renderer def twiddle(self, request, tag): return tag('Hello, world.') <div xmlns:t="http://twistedmatrix.com/ns/twisted.web.template/0.1"> <span t:render="twiddle" /> </div> Will result in this final output:: <div> <span>Hello, world.</span> </div> Nr r r r r �rendererk s r. c @ sj e Zd ZU dZdZee ed< dee d�dd�Ze e ee dgdf d �d d �Z ee dd �d d�Z 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}. N�loader�r0 c C s |d ur|| _ d S r! r1 )r r0 r r r �__init__� s zElement.__init__r r )�namer c C s$ t �| |d�}|du r t| |��|S )z= Look up and return the named render method. N)r. r" r )r r3 r% r r r �lookupRenderMethod� s zElement.lookupRenderMethod)�requestr c C s | j }|du rt| ��|�� 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)r0 r �load)r r5 r0 r r r �render� s zElement.render)N)r& r' r( r) r0 r r �__annotations__r2 r+ r r r4 r7 r r r r r/ � s � r/ )�typingr r r r r r r Zzope.interfacer Ztwisted.web.errorr r r Ztwisted.web.iwebr r r Ztwisted.web.templater r r r r- r. r/ r r r r �<module> s $ M
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