# # Copyright (c) 2009 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 + instance implementations. $Id$ """ from logging import getLogger from zope import component from zope.component import adapts from zope.cachedescriptors.property import Lazy from zope.interface import implements from zope.traversing.api import getName from cybertools.composer.layout.base import Layout, LayoutInstance from cybertools.composer.layout.interfaces import ILayoutInstance from loops.common import adapted, baseObject from loops.layout.interfaces import ILayoutNode, ILayoutNodeContained from loops.view import Node logger = getLogger('loops.layout') class LayoutNode(Node): pageName = u'' implements(ILayoutNode, ILayoutNodeContained) # layout instances class NodeLayoutInstance(LayoutInstance): adapts(ILayoutNode) targetViewName = 'layout' @Lazy def viewAnnotations(self): return self.view.request.annotations.get('loops.view', {}) @Lazy def target(self): return adapted(self.context.target) @Lazy def targetView(self): request = self.view.request view = component.getMultiAdapter((self.target, request), name=self.targetViewName) #view.node = self.context view.layoutInstance = self return view class SubnodesLayoutInstance(NodeLayoutInstance): adapts(ILayoutNode) def getLayouts(self, region): """ Return sublayout instances specified via subnodes of the current menu node. """ if region is None: return [] result = [] menu = self.context.getMenu() subnodes = menu.getMenuItems() names = region.layouts.keys() for n in subnodes: if n.viewName in names: layout = region.layouts[n.viewName] li = component.getAdapter(n, ILayoutInstance, name=layout.instanceName) li.template = layout result.append(li) return result class TargetLayoutInstance(NodeLayoutInstance): """ Associates a layout with all objects of a certain type. """ adapts(ILayoutNode) def getLayouts(self, region): """ Return sublayout instances specified by the target object. """ if region is None or self.target is None: return [] result = super(TargetLayoutInstance, self).getLayouts(region) names = region.layouts.keys() pageName = self.viewAnnotations.get('pageName', u'') obj = baseObject(self.target) tp = obj.getType() #found = False currentRoot = self.context.getMenu() specifics = [] defaults = [] for n in obj.getClients() + tp.getClients(): if not ILayoutNode.providedBy(n): continue if n.nodeType == 'info' and n.viewName in names: if pageName != (n.pageName or '').strip(): continue layoutRoot = n.getMenu() rootName = getName(layoutRoot) if rootName != 'default' and layoutRoot != currentRoot: continue layout = region.layouts[n.viewName] li = component.getAdapter(n, ILayoutInstance, name=layout.instanceName) li.template = layout #result.append(li) #found = True if rootName == 'default': defaults.append(li) else: specifics.append(li) if specifics: result.extend(specifics) elif defaults: result.extend(defaults) #if not found: else: if self.template.defaultSublayout is None: logger.warn('No target layout found: pageName = %r, target = %r' % (pageName, getName(obj))) else: layout = region.layouts.get(self.template.defaultSublayout) if layout is not None: li = component.getAdapter(self.context, ILayoutInstance, name=layout.instanceName) li.template = layout result.append(li) return result @Lazy def target(self): target = self.viewAnnotations.get('target') if target is None: target = adapted(self.context.target) #self.viewAnnotations['target'] = target # TODO: has to be tested! return target