#
#  Copyright (c) 2008 Helmut Merz helmutm@cy55.de
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#

"""
Layout node views.

$Id$
"""

from zope.app.security.interfaces import IUnauthenticatedPrincipal
from zope.cachedescriptors.property import Lazy
from zope import component

from cybertools.composer.layout.browser.view import Page
from loops.common import adapted


class LayoutNodeView(Page):

    @Lazy
    def loopsRoot(self):
        return self.context.getLoopsRoot()

    @Lazy
    def defaultPredicate(self):
        return self.loopsRoot.getConceptManager().getDefaultPredicate()

    @Lazy
    def conceptManager(self):
        return self.loopsRoot.getConceptManager()

    @Lazy
    def resourceManager(self):
        return self.loopsRoot.getResourceManager()

    @Lazy
    def defaultPredicate(self):
        return self.conceptManager.getDefaultPredicate()

    @Lazy
    def layoutName(self):
        return self.context.viewName or 'page'

    @Lazy
    def layoutNames(self):
        result = []
        n = self.context
        while n is not None:
            if n.viewName:
                result.append(n.viewName)
            n = n.getParentNode()
        result.append('page')
        return result

    @Lazy
    def viewAnnotations(self):
        return self.request.annotations.get('loops.view', {})

    @Lazy
    def target(self):
        target = self.viewAnnotations.get('target')
        if target is None:
            target = adapted(self.context.target)
        return target

    @Lazy
    def headTitle(self):
        if self.target is not None:
            targetView = component.getMultiAdapter((self.target, self.request),
                                                   name='layout')
            return ' - '.join((self.context.title, targetView.title))
        else:
            return self.context.title

    @Lazy
    def authenticated(self):
        return not IUnauthenticatedPrincipal.providedBy(self.request.principal)

    def getMessage(self, id):
        return self.request.form.get('loops.messages', {}).get(id, {})