ba8a12110b
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@2785 fd906abe-77d9-0310-91a1-e0d9ade77398
118 lines
3.1 KiB
Python
118 lines
3.1 KiB
Python
#
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# Copyright (c) 2008 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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Basic view classes for layout-based presentation.
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$Id$
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"""
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from zope import component
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from zope.interface import Interface, implements
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from zope.cachedescriptors.property import Lazy
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from zope.app.pagetemplate import ViewPageTemplateFile
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from cybertools.composer.layout.base import Layout, LayoutInstance
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from cybertools.composer.layout.interfaces import ILayoutManager
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class BaseView(object):
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template = ViewPageTemplateFile('base.pt')
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def __init__(self, context, request, name=None):
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self.context = self.__parent__ = context
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self.request = request
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if name is not None:
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self.name = name
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def update(self):
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return True
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def __call__(self):
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return self.template(self)
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class Page(BaseView):
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def __call__(self):
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layout = Layout()
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layout.renderer = ViewPageTemplateFile('main.pt').macros['page']
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instance = LayoutInstance(self.context)
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instance.template = layout
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view = LayoutView(instance, self.request, name='page')
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view.body = view.layouts['body'][0]
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return view.template(view)
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class LayoutView(BaseView):
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name = 'base'
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@Lazy
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def client(self):
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return self.context.context
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@Lazy
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def renderer(self):
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renderer = self.context.renderer
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if renderer is None:
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raise ValueError('No renderer found for %r.' % self.context)
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return renderer
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@Lazy
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def layouts(self):
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return ViewLayouts(self)
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@Lazy
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def resources(self):
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return ViewResources(self)
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def getRegion(self, key):
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manager = component.getUtility(ILayoutManager)
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return manager.regions.get('.'.join((self.name, key)))
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# subview providers
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class ViewLayouts(object):
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def __init__(self, view):
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self.view = view
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def __getitem__(self, key):
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view = self.view
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region = view.getRegion(key)
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if region is None:
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return []
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subviews = []
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for layout in region.layouts:
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instance = LayoutInstance(view.client)
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instance.template = layout
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instance.view = view
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subviews.append(LayoutView(instance, view.request, name=key))
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return subviews
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class ViewResources(object):
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def __init__(self, view):
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self.view = view
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def __getitem__(self, key):
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return []
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