"""xbel views

:organization: Logilab

:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.

:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses

"""

__docformat__ = "restructuredtext en"

_ = unicode

from logilab.mtconverter import xml_escape

from cubicweb.selectors import implements

from cubicweb.view import EntityView

from cubicweb.web.views.xmlrss import XMLView

class XbelView(XMLView):

    __regid__ = 'xbel'

    title = _('xbel')

    templatable = False

    content_type = 'text/xml' #application/xbel+xml

    def cell_call(self, row, col):

        self.wview('xbelitem', self.cw_rset, row=row, col=col)

    def call(self):

        """display a list of entities by calling their <item_vid> view"""

        title = self.page_title()

        url = self._cw.build_url(rql=self._cw.form.get('rql', ''))

        self.w(u'<?xml version="1.0" encoding="%s"?>\n' % self._cw.encoding)

        self.w(u'<!DOCTYPE xbel PUBLIC "+//IDN python.org//DTD XML Bookmark Exchange Language 1.0//EN//XML" "http://www.python.org/topics/xml/dtds/xbel-1.0.dtd">')

        self.w(u'<xbel version="1.0">')

        self.w(u'<title>%s</title>' % self._cw._('bookmarks'))

        for i in xrange(self.cw_rset.rowcount):

            self.cell_call(i, 0)

        self.w(u"</xbel>")

class XbelItemView(EntityView):

    __regid__ = 'xbelitem'

    def cell_call(self, row, col):

        entity = self.cw_rset.complete_entity(row, col)

        self.w(u'<bookmark href="%s">' % xml_escape(self.url(entity)))

        self.w(u'  <title>%s</title>' % xml_escape(entity.dc_title()))

        self.w(u'</bookmark>')

    def url(self, entity):

        return entity.absolute_url()

class XbelItemBookmarkView(XbelItemView):

    __select__ = implements('Bookmark')

    def url(self, entity):

        return entity.actual_url()