834ccde51c
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@3448 fd906abe-77d9-0310-91a1-e0d9ade77398
141 lines
4.5 KiB
Python
141 lines
4.5 KiB
Python
#
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# Copyright (c) 2009 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Layout node + instance implementations.
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$Id$
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"""
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from logging import getLogger
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from zope import component
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from zope.component import adapts
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from zope.cachedescriptors.property import Lazy
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from zope.interface import implements
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from zope.traversing.api import getName
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from cybertools.composer.layout.base import Layout, LayoutInstance
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from cybertools.composer.layout.interfaces import ILayoutInstance
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from loops.common import adapted
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from loops.layout.interfaces import ILayoutNode, ILayoutNodeContained
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from loops.view import Node
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logger = getLogger('loops.layout')
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class LayoutNode(Node):
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pageName = u''
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implements(ILayoutNode, ILayoutNodeContained)
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# layout instances
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class NodeLayoutInstance(LayoutInstance):
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adapts(ILayoutNode)
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@Lazy
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def viewAnnotations(self):
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return self.view.request.annotations.get('loops.view', {})
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@Lazy
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def target(self):
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return adapted(self.context.target)
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@Lazy
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def targetView(self):
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request = self.view.request
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view = component.getMultiAdapter((self.target, request), name='layout')
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view.node = self.context
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return view
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class SubnodesLayoutInstance(NodeLayoutInstance):
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adapts(ILayoutNode)
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def getLayouts(self, region):
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""" Return sublayout instances specified via subnodes of the current menu node.
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"""
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if region is None:
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return []
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result = []
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menu = self.context.getMenu()
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subnodes = menu.getMenuItems()
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names = region.layouts.keys()
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for n in subnodes:
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if n.viewName in names:
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layout = region.layouts[n.viewName]
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li = component.getAdapter(n, ILayoutInstance,
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name=layout.instanceName)
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li.template = layout
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result.append(li)
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return result
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class TargetLayoutInstance(NodeLayoutInstance):
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""" Associates a layout with all objects of a certain type.
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"""
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adapts(ILayoutNode)
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def getLayouts(self, region):
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""" Return sublayout instances specified by the target object.
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"""
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if region is None or self.target is None:
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return []
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result = super(TargetLayoutInstance, self).getLayouts(region)
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names = region.layouts.keys()
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pageName = self.viewAnnotations.get('pageName', u'')
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obj = self.target.context
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tp = obj.getType()
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found = False
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for n in obj.getClients() + tp.getClients():
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if not ILayoutNode.providedBy(n):
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continue
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if n.nodeType == 'info' and n.viewName in names:
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if pageName != (n.pageName or '').strip():
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continue
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layout = region.layouts[n.viewName]
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li = component.getAdapter(n, ILayoutInstance,
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name=layout.instanceName)
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li.template = layout
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result.append(li)
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found = True
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if not found:
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if self.template.defaultSublayout is None:
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logger.warn('No target layout found: pageName = %r, target = %r'
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% (pageName, getName(obj)))
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else:
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layout = region.layouts.get(self.template.defaultSublayout)
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if layout is not None:
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li = component.getAdapter(self.context, ILayoutInstance,
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name=layout.instanceName)
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li.template = layout
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result.append(li)
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return result
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@Lazy
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def target(self):
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target = self.viewAnnotations.get('target')
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if target is None:
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target = adapted(self.context.target)
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return target
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