~launchpad-pqm/launchpad/devel

# Copyright 2011 Canonical Ltd.  This software is licensed under the

# GNU Affero General Public License version 3 (see the file LICENSE).

"""Adapters for registry objects for the webservice."""

__metaclass__ = type

__all__ = []

from lazr.restful.interfaces import (

    IFieldHTMLRenderer,

    IReference,

    IWebServiceClientRequest,

    )

from zope import component

from zope.interface import (

    implementer,

    Interface,

    )

from zope.schema.interfaces import IText

from lp.app.browser.stringformatter import FormattersAPI

from lp.app.browser.tales import format_link

@component.adapter(Interface, IReference, IWebServiceClientRequest)

@implementer(IFieldHTMLRenderer)

def reference_xhtml_representation(context, field, request):

    """Render an object as a link to the object."""

    def render(value):

        # The value is a webservice link to the object, we want field value.

        obj = getattr(context, field.__name__, None)

        try:

            return format_link(obj, empty_value='')

        except NotImplementedError:

            return value

    return render

@component.adapter(Interface, IText, IWebServiceClientRequest)

@implementer(IFieldHTMLRenderer)

def text_xhtml_representation(context, field, request):

    """Render text as XHTML using the webservice."""

    return lambda text: (

        '' if text is None

        else FormattersAPI(text).text_to_html(linkify_text=True))